10-Q

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 10-Q

(Mark One)

x Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the quarterly period ended March 31, 2012

Or

o Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the transition period from                     to                    

Commission file number:  1-32266

POLYPORE INTERNATIONAL, INC.

(Exact Name of Registrant as Specified in Its Charter)

Delaware	43-2049334
(State or Other Jurisdiction of	(IRS Employer
Incorporation or Organization)	Identification No.)

11430 North Community House Road, Suite 350  Charlotte, North Carolina	28277
(Address of Principal Executive Offices)	(Zip Code)

(704) 587-8409

(Registrant’s Telephone Number, Including Area Code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.  x Yes  o No

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).  x Yes  o No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See the definitions of “large accelerated filer”, “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer x	Accelerated filer o
Non-accelerated filer o	Smaller reporting company o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).  o Yes  x No

There were 46,533,576 shares of the registrant’s common stock outstanding as of April 25, 2012.

Polypore International, Inc.

Index to Quarterly Report on Form 10-Q

For the Three Months Ended March 31, 2012

		Page
PART I	FINANCIAL INFORMATION
Item 1.	Financial Statements	4
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	18
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	24
Item 4.	Controls and Procedures	24
PART II	OTHER INFORMATION
Item 1.	Legal Proceedings	24
Item 6.	Exhibits	26
SIGNATURES		27

In this Quarterly Report on Form 10-Q, the words “Polypore International,” “Company,” “we,” “us” and “our” refer to Polypore International, Inc. together with its subsidiaries, unless the context indicates otherwise.

2

Forward-looking Statements

This Quarterly Report on Form 10-Q includes “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and the Private Securities Litigation Reform Act of 1995. All statements other than statements of historical facts included in this Quarterly Report on Form 10-Q that address activities, events or developments that we expect, believe or anticipate will or may occur in the future are forward-looking statements, including, in particular, the statements about Polypore International’s plans, objectives, strategies and prospects regarding, among other things, the financial condition, results of operations and business of Polypore International and its subsidiaries. We have identified some of these forward-looking statements with words like “believe,” “may,” “will,” “should,” “expect,” “intend,” “plan,” “predict,” “anticipate,” “estimate” or “continue” and other words and terms of similar meaning. These forward-looking statements may be contained under the captions “Management’s Discussion and Analysis of Financial Condition and Results of Operations” or “Controls and Procedures,” the Company’s financial statements or the notes thereto or elsewhere in this Quarterly Report on Form 10-Q.

These forward-looking statements are based on current expectations about future events affecting us and are subject to uncertainties and factors relating to our operations and business environment, all of which are difficult to predict and many of which are beyond our control. Many factors mentioned in our discussion in this Quarterly Report on Form 10-Q, including the risks outlined under the caption entitled “Item 1A. Risk Factors” in our Annual Report on Form 10-K for the fiscal year ended December 31, 2011, will be important in determining future results. Although we believe that the expectations reflected in our forward-looking statements are reasonable, we do not know whether our expectations will prove correct. They can be affected by inaccurate assumptions we might make or by known or unknown risks and uncertainties, including with respect to Polypore International, the following, among other things:

·      the highly competitive nature of the markets in which we sell our products;

·      the failure to continue to develop innovative products;

·      the loss of our customers;

·      the vertical integration by our customers of the production of our products into their own manufacturing process;

·      increases in prices for raw materials or the loss of key supplier contracts;

·      our substantial indebtedness;

·      interest rate risk related to our variable rate indebtedness;

·      our inability to generate cash;

·      restrictions related to the senior secured credit agreement;

·      employee slowdowns, strikes or similar actions;

·product liability claims exposure;

·risks in connection with our operations outside the United States, including compliance with applicable anti-corruption laws;

·the incurrence of substantial costs to comply with, or as a result of violations of, or liabilities under environmental laws;

·      the failure to protect our intellectual property;

·      the loss of senior management;

·      the incurrence of additional debt, contingent liabilities and expenses in connection with future acquisitions;

·      the failure to effectively integrate newly acquired operations;

·      the absence of expected returns from the intangible assets we have recorded;

·      the adverse impact from legal proceedings on our financial condition; and

·      natural disasters, epidemics, terrorist acts and other events beyond our control.

Because our actual results, performance or achievements could differ materially from those expressed in, or implied by, the forward-looking statements, we cannot give any assurance that any of the events anticipated by the forward-looking statements will occur or, if any of them do, what impact they will have on Polypore International’s results of operations and financial condition. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date of this Quarterly Report on Form 10-Q. We do not undertake any obligation to update these forward-looking statements to reflect new information, future events or otherwise, except as may be required under federal securities laws.

3

PART I — FINANCIAL INFORMATION

Item 1.  Financial Statements

Polypore International, Inc.

Condensed consolidated balance sheets

	March 31, 2012
(in thousands, except share data)	(unaudited)			December 31, 2011*
Assets
Current assets:
Cash and cash equivalents	$	78,956		$	92,574
Accounts receivable, net	120,013			134,016
Inventories	107,297			90,444
Deferred income taxes	3,145			3,171
Prepaid and other	23,457			21,560
Total current assets	332,868			341,765
Property, plant and equipment, net	571,452			527,778
Goodwill	469,319			469,319
Intangibles and loan acquisition costs, net	129,198			133,586
Other	7,843			9,431
Total assets	$	1,510,680		$	1,481,879
Liabilities and shareholders’ equity
Current liabilities:
Accounts payable	$	34,941		$	34,332
Accrued liabilities	52,609			61,907
Income taxes payable	3,341			5,881
Current portion of debt	3,696			3,682
Total current liabilities	94,587			105,802
Debt, less current portion	706,199			705,836
Pension obligations, less current portion	81,493			78,086
Deferred income taxes	80,909			76,601
Other	16,204			16,161
Commitments and contingencies
Shareholders’ equity:
Preferred stock — 15,000,000 shares authorized, no shares issued and outstanding	—			—
Common stock, $.01 par value — 200,000,000 shares authorized, 46,533,576 and 46,499,180 issued and outstanding at March 31, 2012 and December 31, 2011	465			465
Paid-in capital	531,797			527,243
Retained earnings (accumulated deficit)	3,590			(15,183		)
Accumulated other comprehensive loss	(8,558		)	(17,127		)
Total Polypore shareholders’ equity	527,294			495,398
Noncontrolling interest	3,994			3,995
Total shareholders’ equity	531,288			499,393
Total liabilities and shareholders’ equity	$	1,510,680		$	1,481,879

* Derived from audited consolidated financial statements

See notes to condensed consolidated financial statements

4

Polypore International, Inc.

Condensed consolidated statements of income

(unaudited)

	Three Months Ended
(in thousands, except per share data)	March 31, 2012		April 2, 2011
Net sales	$	173,705	$	185,674
Cost of goods sold	102,681		106,208
Gross profit	71,024		79,466
Selling, general and administrative expenses	33,886		30,550
Operating income	37,138		48,916
Other (income) expense:
Interest expense, net	8,791		8,899
Foreign currency and other	451		1,598
	9,242		10,497
Income before income taxes	27,896		38,419
Income taxes	9,123		12,738
Net income	$	18,773	$	25,681
Net income per share:
Basic	$	0.40	$	0.56
Diluted	$	0.40	$	0.55
Weighted average shares outstanding:
Basic	46,497,701		45,685,520
Diluted	47,215,006		46,797,646

See notes to condensed consolidated financial statements

5

Polypore International, Inc.

Condensed consolidated statements of comprehensive income

(unaudited)

	Three Months Ended
(in thousands)	March 31, 2012			April 2, 2011
Net income	$	18,773		$	25,681
Other comprehensive income (loss):
Foreign currency translation adjustment, net of income tax expense of $534 in 2012 and $1,558 in 2011	8,889			9,707
Change in net actuarial loss and prior service credit	(320		)	(368		)
Comprehensive income	$	27,342		$	35,020

See notes to condensed consolidated financial statements

6

Polypore International, Inc.

Condensed consolidated statements of cash flows

(unaudited)

	Three Months Ended
(in thousands)	March 31, 2012			April 2, 2011
Operating activities:
Net income	$	18,773		$	25,681
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation expense	9,441			7,962
Amortization expense	4,091			4,121
Amortization of loan acquisition costs	617			608
Stock-based compensation	4,270			1,035
Loss on disposal of property, plant and equipment	289			163
Foreign currency loss	1,128			1,726
Deferred income taxes	4,115			6,778
Changes in operating assets and liabilities:
Accounts receivable	15,510			(11,998		)
Inventories	(15,384		)	(784		)
Prepaid and other current assets	575			(2,126		)
Accounts payable and accrued liabilities	(10,470		)	5,532
Income taxes payable	(2,345		)	956
Other, net	(394		)	(1,574		)
Net cash provided by operating activities	30,216			38,080
Investing activities:
Purchases of property, plant and equipment, net	(45,350		)	(29,677		)
Net cash used in investing activities	(45,350		)	(29,677		)
Financing activities:
Principal payments on debt	(924		)	(1,738		)
Proceeds from stock option exercises	284			2,295
Noncontrolling interest	(31		)	(14		)
Payments for loan acquisition costs	—			(275		)
Net cash provided by (used in) financing activities	(671		)	268
Effect of exchange rate changes on cash and cash equivalents	2,187			4,241
Net increase (decrease) in cash and cash equivalents	(13,618		)	12,912
Cash and cash equivalents at beginning of period	92,574			89,955
Cash and cash equivalents at end of period	$	78,956		$	102,867

See notes to condensed consolidated financial statements

7

Polypore International, Inc.

Notes to condensed consolidated financial statements

(unaudited)

1.             Description of Business and Basis of Presentation

Description of Business

Polypore International, Inc. (the “Company”) is a leading global high technology filtration company that develops, manufactures and markets specialized microporous membranes used in separation and filtration processes. The Company has a global presence in the major geographic markets of North America, South America, Europe and Asia.

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements include the accounts of the Company and all majority-owned subsidiaries after elimination of intercompany accounts and transactions.  The unaudited condensed consolidated financial statements are prepared in accordance with U.S. generally accepted accounting principles for interim financial information. Accordingly, the unaudited condensed consolidated financial statements and notes do not contain certain information included in the Company’s annual financial statements. In the opinion of management, all normal and recurring adjustments that are necessary for a fair presentation have been made. Certain amounts previously presented in the condensed consolidated financial statements for prior periods have been reclassified to conform to current classifications. Operating results for the three months ended March 31, 2012 are not necessarily indicative of the results that may be expected for the fiscal year ending December 29, 2012. The unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2011.

2.             Recent Accounting Pronouncements

In June 2011, the FASB issued guidance on the disclosure and presentation requirements for comprehensive income. This new guidance requires comprehensive income to be presented in either a single continuous financial statement or in two separate but consecutive financial statements. The adoption of this guidance in the Company’s March 31, 2012 condensed consolidated financial statements only affected presentation and did not have an impact on the Company’s financial condition or results of operations.

In September 2011, the FASB amended the guidance on the annual testing of goodwill for impairment. The amended guidance will allow companies to assess qualitative factors to determine if it is more likely than not that goodwill might be impaired and whether it is necessary to perform the two-step goodwill impairment test required under current accounting standards. The guidance is effective for annual and interim goodwill impairment tests performed for fiscal years beginning after December 15, 2011. The Company will adopt this guidance in performing its annual goodwill impairment test as of the first day of the fourth quarter of 2012.  The adoption of this guidance is not expected to have an impact on the Company’s financial condition or results of operations.

3.             Inventories

Inventories are carried at the lower of cost or market using the first-in, first-out method of accounting and consist of:

(in thousands)	March 31, 2012		December 31, 2011
Raw materials	$	38,218	$	35,423
Work-in-process	22,370		18,351
Finished goods	46,709		36,670
	$	107,297	$	90,444

8

Polypore International, Inc.

Notes to condensed consolidated financial statements

(unaudited)

4.             Debt

Debt, in order of priority, consists of:

(in thousands)	March 31, 2012		December 31, 2011
Senior credit agreement:
Revolving credit facility	$	—	$	—
Term loan facilities	344,895		344,518
	344,895		344,518
7.5% senior notes	365,000		365,000
	709,895		709,518
Less current maturities	3,696		3,682
Long-term debt	$	706,199	$	705,836

5.             Fair Value of Financial Instruments

The Company’s financial instruments include cash and cash equivalents, accounts receivable, accounts payable, accrued liabilities and long-term debt. The carrying value of cash and cash equivalents, accounts receivable, accounts payable and accrued liabilities approximates their fair value due to the short-term maturities of these assets and liabilities. The carrying amount of borrowings under the senior credit agreement approximates fair value because the interest rates adjust to market interest rates. The fair value of the 7.5% senior notes, based on a quoted market price and classified as level one in the fair value hierarchy, was $385,075,000 at March 31, 2012.

6.             Income Taxes

The income tax provision for the interim periods presented is computed at the effective rate expected to be applicable in each respective full year using the statutory rates on a country-by-country basis. Income tax expense recorded in the financial statements differs from the federal statutory income tax rate due to a variety of factors, including state income taxes, the mix of income between U.S. and foreign jurisdictions taxed at varying rates and changes in estimates of permanent differences and valuation allowances.

7.             Pension Plans

The Company and its subsidiaries sponsor multiple defined benefit pension plans based in subsidiaries located outside of the United States. The following table provides the components of net periodic benefit cost:

	Three Months Ended
(in thousands)	March 31, 2012			April 2, 2011
Service cost	$	422		$	380
Interest cost	1,207			1,230
Expected return on plan assets	(215		)	(223		)
Amortization of prior service cost	(13		)	(13		)
Recognized net actuarial loss	119			19
Net periodic benefit cost	$	1,520		$	1,393

8.             Environmental Matters

Environmental obligations are accrued when such expenditures are probable and reasonably estimable. The amount of liability recorded is based on currently available information, including the progress of remedial investigations, current status of discussions with regulatory authorities regarding the method and extent of remediation, presently enacted laws and existing technology. Accruals for estimated losses from environmental obligations are adjusted as further information develops or

9

Polypore International, Inc.

Notes to condensed consolidated financial statements

(unaudited)

circumstances change. Costs of future expenditures for environmental obligations are not discounted to their present value. The Company does not currently anticipate any material loss in excess of the amounts accrued. However, the Company’s future remediation expenses may be affected by a number of uncertainties including, but not limited to, the difficulty in estimating the extent and method of remediation, the evolving nature of environmental regulations and the availability and application of technology. The Company does not expect the resolution of such uncertainties to have a material adverse effect on its consolidated financial position or liquidity. Recoveries of environmental costs from other parties are recognized as assets when their receipt is deemed probable.

In connection with the acquisition of Membrana GmbH (“Membrana”) in 2002, the Company recorded a reserve for environmental obligations. The reserve provides for costs to remediate known environmental issues and operational upgrades which are required in order for the Company to remain in compliance with local regulations. The initial estimate and subsequent finalization of the reserve was included in the allocation of purchase price at the date of acquisition. The environmental reserve for the Membrana facility, which is denominated in euros, was $11,599,000 and $11,957,000 at March 31, 2012 and December 31, 2011, respectively. The Company anticipates the expenditures associated with the reserve will be made in the next twelve months. At March 31, 2012, the reserve was included in “Accrued liabilities” in the accompanying condensed consolidated balance sheets.

The Company has indemnification agreements for certain environmental matters from Acordis A.G. (“Acordis”) and Akzo Nobel N.V. (“Akzo”), the prior owners of Membrana. Akzo originally provided broad environmental protections to Acordis with the right to assign such indemnities to Acordis’s successors. Akzo’s indemnifications relate to conditions existing prior to December 1999, which is the date that Membrana was sold to Acordis. In addition to the Akzo indemnification, Acordis provides separate indemnification of claims incurred from December 1999 through February 2002, the acquisition date. The Company receives indemnification payments under the indemnification agreements after expenditures are made against approved claims. At March 31, 2012 and December 31, 2011, the amounts receivable under the indemnification agreements were $12,462,000 and $12,099,000, respectively. At March 31, 2012, the receivable under the indemnification agreements was included in “Prepaid and other” in the accompanying condensed consolidated balance sheets.

9.             Government Grants

In 2010, the Company was awarded a $49,264,000 grant from the U.S. Department of Energy (“DOE”) to help fund an expansion of its U.S. lithium battery separator production capacity. As of March 31, 2012, the Company has recognized $48,479,000 from the DOE grant. The Company has also been awarded state and local grants in connection with certain of its U.S. expansions.

The Company recognized grant awards for capital expenditures of $1,910,000 and $6,416,000 for the three months ended March 31, 2012 and April 2, 2011, respectively. The Company recognized grant awards for expenses of $604,000 and $532,000 for the three months ended March 31, 2012 and April 2, 2011, respectively. At March 31, 2012 and December 31, 2011, amounts due from government agencies were $271,000 and $1,483,000, respectively.

10.          Related Party Transactions

The Company’s German subsidiary has a 33% equity investment in a patent and trademark service provider and a 25% equity investment in a research company. The investments are accounted for under the equity method of accounting and were $789,000 and $588,000 at March 31, 2012 and December 31, 2011, respectively. Charges from the affiliates for work performed were $327,000 and $281,000 for the three months ended March 31, 2012 and April 2, 2011, respectively. Amounts due to the affiliates were $75,000 and $107,000 at March 31, 2012 and December 31, 2011, respectively.

11.          Noncontrolling Interest

In 2010, the Company entered into a joint venture agreement with a customer, Camel Group Co., Ltd (“Camel”), a leading battery manufacturer in China, to produce lead-acid battery separators primarily for Camel’s use. The joint venture, Daramic Xiangyang Battery Separator Co., Ltd. (“Daramic Xiangyang”), is located at Camel’s facility and is expected to start production in 2012. In accordance with the joint venture agreement, the Company has made cash contributions of $7,370,000 for a 65% ownership interest in the joint venture, and Camel has contributed cash of $2,554,000 and land for a 35% ownership interest. In exchange for notes payable, Daramic Xiangyang has purchased production assets from the Company’s former facility in Potenza, Italy, and will purchase a building currently under construction from Camel.

10

Polypore International, Inc.

Notes to condensed consolidated financial statements

(unaudited)

12.          Segment Information

The Company’s operations are principally managed on a products basis and are comprised of three reportable segments for financial reporting purposes. The Company’s three reportable segments are presented in the context of its two primary businesses — energy storage and separations media.

The energy storage business produces and markets membranes that provide the critical function of separating the cathode and anode in a variety of battery markets and is comprised of the following reportable segments:

·Electronics and EDVs - produces and markets membranes for lithium-ion batteries that are used in portable electronic devices, cordless power tools and electric drive vehicles (“EDVs”).

·Transportation and industrial - produces and markets membranes for lead-acid batteries that are used in automobiles, other motor vehicles, forklifts and uninterruptible power supply systems.

The separations media business is one reportable segment and produces and markets membranes used as the high technology filtration element in various medical and industrial applications.

The Company evaluates the performance of segments and allocates resources to segments based on operating income before depreciation and amortization. In addition, it evaluates business segment performance before stock-based compensation and certain non-recurring and other costs.

11

Polypore International, Inc.

Notes to condensed consolidated financial statements

(unaudited)

Financial information relating to the reportable segments is presented below:

	Three Months Ended
(in thousands)	March 31, 2012			April 2, 2011
Net sales to external customers (by major product group):
Electronics and EDVs	$	42,388		$	42,144
Transportation and industrial	86,202			94,440
Energy storage	128,590			136,584
Healthcare	27,545			30,531
Filtration and specialty	17,570			18,559
Separations media	45,115			49,090
Total net sales to external customers	$	173,705		$	185,674
Operating income:
Electronics and EDVs	$	16,795		$	18,387
Transportation and industrial	20,014			25,771
Energy storage	36,809			44,158
Separations media	13,863			16,390
Corporate and other	(8,696		)	(10,375		)
Segment operating income	41,976			50,173
Stock-based compensation	4,270			1,035
Non-recurring and other costs	568			222
Total operating income	37,138			48,916
Reconciling items:
Interest expense, net	8,791			8,899
Foreign currency and other	451			1,598
Income before income taxes	$	27,896		$	38,419
Depreciation and amortization:
Electronics and EDVs	$	3,161		$	1,873
Transportation and industrial	2,901			2,932
Energy storage	6,062			4,805
Separations media	3,322			3,093
Corporate and other	4,148			4,185
Total depreciation and amortization	$	13,532		$	12,083

12

Polypore International, Inc.

Notes to condensed consolidated financial statements

(unaudited)

13.          Financial Statements of Guarantors

The Company’s senior notes are unconditionally guaranteed, jointly and severally, on a senior basis by certain of the Company’s 100% owned subsidiaries (“Guarantors”). Management has determined that separate complete financial statements of the Guarantors would not be material to users of the financial statements.

The following sets forth condensed consolidating financial statements of the Guarantors and non-Guarantor subsidiaries.

Condensed consolidating balance sheet
March 31, 2012

(in thousands)	Combined Guarantor Subsidiaries		Combined Non-Guarantor Subsidiaries		The Company			Eliminations			Consolidated
Assets
Cash and cash equivalents	$	—	$	75,799	$	3,157		$	—		$	78,956
Accounts receivable, net	37,400		82,613		—			—			120,013
Inventories	37,147		70,150		—			—			107,297
Prepaid and other	5,090		21,481		31			—			26,602
Total current assets	79,637		250,043		3,188			—			332,868
Due from affiliates	482,640		297,887		410,018			(1,190,545		)	—
Investment in subsidiaries	167,329		321,035		607,432			(1,095,796		)	—
Property, plant and equipment, net	270,288		301,164		—			—			571,452
Goodwill	—		—		469,319			—			469,319
Intangibles and loan acquisition costs, net	—		—		129,198			—			129,198
Other	157		7,686		—			—			7,843
Total assets	$	1,000,051	$	1,177,815	$	1,619,155		$	(2,286,341	)	$	1,510,680
Liabilities and shareholders’ equity
Accounts payable and accrued liabilities	$	28,357	$	48,723	$	10,470		$	—		$	87,550
Income taxes payable	—		3,754		(413		)	—			3,341
Current portion of debt	—		467		3,229			—			3,696
Total current liabilities	28,357		52,944		13,286			—			94,587
Due to affiliates	506,909		271,395		412,241			(1,190,545		)	—
Debt, less current portion	—		44,002		662,197			—			706,199
Pension obligations, less current portion	—		81,493		—			—			81,493
Deferred income taxes and other	51,018		45,952		143			—			97,113
Shareholders’ equity	413,767		682,029		531,288			(1,095,796		)	531,288
Total liabilities and shareholders’ equity	$	1,000,051	$	1,177,815	$	1,619,155		$	(2,286,341	)	$	1,510,680

13

Polypore International, Inc.

Notes to condensed consolidated financial statements

(unaudited)

Condensed consolidating balance sheet
December 31, 2011

(in thousands)	Combined Guarantor Subsidiaries		Combined Non-Guarantor Subsidiaries		The Company		Eliminations			Consolidated
Assets
Cash and cash equivalents	$	—	$	65,495	$	27,079	$	—		$	92,574
Accounts receivable, net	51,831		82,185		—		—			134,016
Inventories	31,603		58,841		—		—			90,444
Prepaid and other	6,345		18,324		62		—			24,731
Total current assets	89,779		224,845		27,141		—			341,765
Due from affiliates	549,943		282,244		377,981		(1,210,168		)	—
Investment in subsidiaries	177,143		321,215		570,456		(1,068,814		)	—
Property, plant and equipment, net	235,051		292,727		—		—			527,778
Goodwill	—		—		469,319		—			469,319
Intangibles and loan acquisition costs, net	—		—		133,586		—			133,586
Other	157		9,274		—		—			9,431
Total assets	$	1,052,073	$	1,130,305	$	1,578,483	$	(2,278,982	)	$	1,481,879
Liabilities and shareholders’ equity
Accounts payable and accrued liabilities	$	41,301	$	51,391	$	3,547	$	—		$	96,239
Income taxes payable	—		5,231		650		—			5,881
Current portion of debt	—		453		3,229		—			3,682
Total current liabilities	41,301		57,075		7,426		—			105,802
Due to affiliates	554,230		247,424		408,514		(1,210,168		)	—
Debt, less current portion	—		42,832		663,004		—			705,836
Pension obligations, less current portion	—		78,086		—		—			78,086
Deferred income taxes and other	47,140		45,476		146		—			92,762
Shareholders’ equity	409,402		659,412		499,393		(1,068,814		)	499,393
Total liabilities and shareholders’ equity	$	1,052,073	$	1,130,305	$	1,578,483	$	(2,278,982	)	$	1,481,879

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Polypore International, Inc.

Notes to condensed consolidated financial statements

(unaudited)

Condensed consolidating statement of income
For the three months ended March 31, 2012

(in thousands)	Combined Guarantor Subsidiaries			Combined Non-Guarantor Subsidiaries		The Company			Eliminations			Consolidated
Net sales	$	53,521		$	120,184	$	—		$	—		$	173,705
Cost of goods sold	17,412			85,269		—			—			102,681
Gross profit	36,109			34,915		—			—			71,024
Selling, general and administrative expenses	17,309			12,274		4,303			—			33,886
Operating income (loss)	18,800			22,641		(4,303		)	—			37,138
Interest expense and other	(2,584		)	2,797		9,029			—			9,242
Equity in earnings of subsidiaries	—			—		(28,663		)	28,663			—
Income before income taxes	21,384			19,844		15,331			(28,663		)	27,896
Income taxes	7,931			4,634		(3,442		)	—			9,123
Net income	$	13,453		$	15,210	$	18,773		$	(28,663	)	$	18,773

Condensed consolidating statement of income
For the three months ended April 2, 2011

(in thousands)	Combined Guarantor Subsidiaries			Combined Non-Guarantor Subsidiaries		The Company			Eliminations			Consolidated
Net sales	$	61,745		$	123,929	$	—		$	—		$	185,674
Cost of goods sold	19,390			86,818		—			—			106,208
Gross profit	42,355			37,111		—			—			79,466
Selling, general and administrative expenses	17,015			12,431		1,104			—			30,550
Operating income (loss)	25,340			24,680		(1,104		)	—			48,916
Interest expense and other	(837		)	2,505		8,829			—			10,497
Equity in earnings of subsidiaries	—			—		(33,515		)	33,515			—
Income before income taxes	26,177			22,175		23,582			(33,515		)	38,419
Income taxes	8,964			5,873		(2,099		)	—			12,738
Net income	$	17,213		$	16,302	$	25,681		$	(33,515	)	$	25,681

15

Polypore International, Inc.

Notes to condensed consolidated financial statements

(unaudited)

Condensed consolidating statement of comprehensive income

For the three months ended March 31, 2012

(in thousands)	Combined Guarantor Subsidiaries		Combined Non-Guarantor Subsidiaries			The Company			Eliminations			Consolidated
Net income	$	13,453	$	15,210		$	18,773		$	(28,663	)	$	18,773
Other comprehensive income (loss):
Foreign currency translation adjustment	—		8,302			(271		)	858			8,889
Change in net actuarial loss and prior service credit	—		(320		)	—			—			(320		)
Equity in earnings of subsidiaries	—		—			8,840			(8,840		)	—
Comprehensive income	$	13,453	$	23,192		$	27,342		$	(36,645	)	$	27,342

Condensed consolidating statement of comprehensive income

For the three months ended April 2, 2011

(in thousands)	Combined Guarantor Subsidiaries		Combined Non-Guarantor Subsidiaries			The Company			Eliminations			Consolidated
Net income	$	17,213	$	16,302		$	25,681		$	(33,515	)	$	25,681
Other comprehensive income (loss):
Foreign currency translation adjustment	—		12,374			(1,890		)	(777		)	9,707
Change in net actuarial loss and prior service credit	—		(368		)	—			—			(368		)
Equity in earnings of subsidiaries	—		—			11,229			(11,229		)	—
Comprehensive income	$	17,213	$	28,308		$	35,020		$	(45,521	)	$	35,020

16

Polypore International, Inc.

Notes to condensed consolidated financial statements

(unaudited)

Condensed consolidating statement of cash flows
For the three months ended March 31, 2012

(in thousands)	Combined Guarantor Subsidiaries			Combined Non-Guarantor Subsidiaries			The Company			Eliminations			Consolidated
Net cash provided by (used in) operating activities	$	26,400		$	6,121		$	(2,565	)	$	260		$	30,216
Investing activities:
Purchases of property, plant and equipment, net	(38,689		)	(6,661		)	—			—			(45,350		)
Net cash used in investing activities	(38,689		)	(6,661		)	—			—			(45,350		)
Financing activities:
Principal payments on debt	—			(117		)	(807		)	—			(924		)
Proceeds from stock option exercises	—			—			284			—			284
Intercompany transactions, net	12,289			8,774			(20,803		)	(260		)	—
Other	—			—			(31		)	—			(31		)
Net cash provided by (used in) financing activities	12,289			8,657			(21,357		)	(260		)	(671		)
Effect of exchange rate changes on cash and cash equivalents	—			2,187			—			—			2,187
Net increase (decrease) in cash and cash equivalents	—			10,304			(23,922		)	—			(13,618		)
Cash and cash equivalents at beginning of period	—			65,495			27,079			—			92,574
Cash and cash equivalents at end of period	$	—		$	75,799		$	3,157		$	—		$	78,956

Condensed consolidating statement of cash flows
For the three months ended April 2, 2011

(in thousands)	Combined Guarantor Subsidiaries			Combined Non-Guarantor Subsidiaries			The Company			Eliminations			Consolidated
Net cash provided by (used in) operating activities	$	29,374		$	9,990		$	(2,466	)	$	1,182		$	38,080
Investing activities:
Purchases of property, plant and equipment, net	(20,615		)	(9,062		)	—			—			(29,677		)
Net cash used in investing activities	(20,615		)	(9,062		)	—			—			(29,677		)
Financing activities:
Principal payments on debt	—			(123		)	(1,615		)	—			(1,738		)
Proceeds from stock option exercises	—			—			2,295			—			2,295
Intercompany transactions, net	(8,759		)	6,854			3,087			(1,182		)	—
Other	—			—			(289		)	—			(289		)
Net cash provided by (used in) financing activities	(8,759		)	6,731			3,478			(1,182		)	268
Effect of exchange rate changes on cash and cash equivalents	—			4,241			—			—			4,241
Net increase in cash and cash equivalents	—			11,900			1,012			—			12,912
Cash and cash equivalents at beginning of period	—			58,172			31,783			—			89,955
Cash and cash equivalents at end of period	$	—		$	70,072		$	32,795		$	—		$	102,867

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Item 2.  Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following discussion of our financial condition and results of operations should be read together with our unaudited condensed consolidated financial statements and the related notes included elsewhere in this Quarterly Report on Form 10-Q and our audited consolidated financial statements and the related notes included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2011.

Overview

We are a leading global high technology filtration company that develops, manufactures and markets specialized microporous membranes used in separation and filtration processes. In fiscal 2011, we generated total net sales of $763.1 million. We operate in two primary businesses: energy storage and separations media. We manufacture our products at facilities in North America, Europe and Asia. Net sales from foreign locations were $490.6 million for fiscal 2011.

Energy Storage

In the energy storage business, our membrane separators are a critical performance component in lithium batteries, which are primarily used in consumer electronics and electric drive vehicle (“EDV”) applications, and lead-acid batteries, which are used globally in transportation and numerous industrial applications. We believe that the long-term growth drivers for the energy storage business — growth in Asia, strong demand for consumer electronics and growing demand for EDVs — are positive. The energy storage business is comprised of two reportable segments, as described below.

Electronics and EDVs.  Lithium batteries are the power source in a wide variety of applications, including consumer electronics applications such as notebook computers, tablets, mobile phones and cordless power tools; EDVs; and emerging applications such as energy storage systems (“ESS”). Growth in lithium batteries is being driven by demand in consumer electronics and EDVs. Since late 2009, we have announced $334.0 million of capacity expansions, consisting of EDV-targeted expansions at our existing Charlotte, North Carolina facility and a new facility in Concord, North Carolina, and a consumer electronics-targeted expansion at our facility in Ochang, Korea.  We have completed the Charlotte and Ochang expansions and expect to complete and start ramping up production on the first phase of the Concord facility in mid-2012.  The remaining expansions at the Concord facility will be completed in two phases, one of which will start ramping up in late 2012 and the other in late 2013.  As of March 31, 2012, we have spent approximately $235.0 million on these expansions. We expect to complete the remaining capital expenditures associated with these expansions in 2012 or early 2013. The Charlotte and Concord expansions were partially funded by a grant from the U.S. Department of Energy (“DOE”) of $49.3 million.

Transportation and industrial.  In the lead-acid battery market, the high proportion of aftermarket replacement sales and the steady growth of the worldwide fleet of motor vehicles provide us with a growing recurring revenue base in lead-acid battery separators. Worldwide demand for lead-acid battery separators is expected to continue to grow at slightly more than annual economic growth. The Asia-Pacific region is the fastest growing market for lead-acid battery separators. Growth in this region is driven by the increasing penetration of automobile ownership, growth in industrial and manufacturing sectors, export incentives and ongoing conversion to the polyethylene-based membrane separators we produce. We have positioned ourselves to benefit from growth in Asia by expanding capacity at our Prachinburi, Thailand facility; acquiring battery separator manufacturing assets and subsequently expanding our operations in Bangalore, India; acquiring a production facility in Tianjin, China; establishing an Asian Technical Center in Thailand; and entering into a joint venture with a customer, Camel Group Co., Ltd. (“Camel”). The joint venture will produce lead-acid battery separators in China and is expected to start production in mid-2012. In February 2011, we started an additional expansion at our Prachinburi, Thailand facility that is expected to begin production in the second quarter of 2012.

Separations Media

In the separations media business, our filtration membranes and modules are used in healthcare and high-performance filtration and specialty applications. We believe that the separations media business will continue to benefit from continued growth in demand for higher levels of purity in a growing number of applications. The separations media business is a reportable segment.

For healthcare applications, we produce membranes used in blood filtration applications for hemodialysis, blood oxygenation and plasmapheresis. Growth in demand for hemodialysis membranes is driven by the increasing worldwide population of end-stage renal disease patients. We believe that conversion to single-use dialyzers and increasing treatment frequency will result in additional dialyzer market growth. In late 2011, we completed an expansion of our PUREMA® hemodialysis membrane production capacity to support future market growth.

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For filtration and specialty applications, we produce a wide range of membranes and membrane-based elements for micro-, ultra- and nanofiltration and gasification/degasification of liquids. Micro-, ultra- and nanofiltration membrane element market growth is being driven by several factors, including end-market growth in applications such as water treatment and pharmaceutical processing, displacement of conventional filtration media by membrane filtration due to membranes’ superior cost and performance attributes and increasing purity requirements in industrial and other applications.

Critical accounting policies

Critical accounting policies are those accounting policies that can have a significant impact on the presentation of our financial condition and results of operations, and that require the use of complex and subjective estimates based on past experience and management’s judgment. Because of the uncertainty inherent in such estimates, actual results may differ from these estimates. These policies are critical to the understanding of our operating results and financial condition and include policies related to the allowance for doubtful accounts, impairment of intangibles and goodwill, pension benefits, environmental matters and repairs and maintenance. For a discussion of each of these policies, please see the discussion entitled “Critical Accounting Policies” under Item 7 — Management’s Discussion and Analysis of Financial Condition and Results of Operations in our Annual Report on Form 10-K for the year ended December 31, 2011.

Results of Operations

The following table sets forth, for the periods indicated, certain operating data in amount and as a percentage of net sales:

					Percentage of Net Sales
	Three Months Ended				Three Months Ended
($’s in millions)	March 31, 2012		April 2, 2011		March 31, 2012		April 2, 2011
Net sales	$	173.7	$	185.7	100.0	%	100.0	%
Gross profit	71.0		79.5		40.9		42.8
Selling, general and administrative expenses	33.9		30.6		19.5		16.5
Operating income	37.1		48.9		21.4		26.3
Interest expense, net	8.8		8.9		5.1		4.8
Other	0.4		1.6		0.2		0.8
Income before income taxes	27.9		38.4		16.1		20.7
Income taxes	9.1		12.7		5.3		6.9
Net income	$	18.8	$	25.7	10.8	%	13.8	%

Comparison of the three months ended March 31, 2012 with the three months ended April 2, 2011

Net sales.  Net sales for the three months ended March 31, 2012 were $173.7 million, a decrease of $12.0 million, or 6.5%, from the same period in the prior year. The decrease was due to lower sales in the transportation and industrial segment and separations media segment and the negative impact of foreign currency translation of $3.1 million. Based on updated customer forecasts and production schedules, we expect full-year sales growth, primarily in the second half of the year.

Gross profit. Gross profit was $71.0 million, a decrease of $8.5 million, or 10.7%, from the same period in the prior year.  Gross profit as a percent of net sales was 40.9% for the three months ended March 31, 2012, compared to 42.8% for the three months ended April 2, 2011.  The decrease in consolidated gross profit and gross profit margin was primarily due to lower sales and costs associated with growth investments, including $1.5 million of additional depreciation expense.

Selling, general and administrative expenses.Selling, general and administrative expenses increased $3.3 million for the three months ended March 31, 2012 compared to the prior year, primarily due to costs associated with growth investments and higher stock-based compensation expense, partially offset by a decline in performance-based incentive compensation expense.

Segment operating income.  Segment operating income, which excludes stock-based compensation and certain non-recurring and other costs, was $42.0 million, a decrease of $8.2 million, or 16.3%, from the same period in the prior year. Segment operating income as a percent of net sales was 24.2% for the three months ended March 31, 2012, compared to 27.0% for the three months ended April 2, 2011.  The decrease in segment operating income and segment operating income margin was the result of lower sales and costs associated with growth investments, including non-cash depreciation expense, partially offset by a decline in performance-based incentive compensation expense.

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Interest expense.  Interest expense for the three months ended March 31, 2012 was $8.8 million, which was comparable to the same period in the prior year.

Income taxes.  The income tax expense for the interim periods presented is computed at the effective rate expected to be applicable in each respective full year using the statutory rates on a country-by-country basis. The effective tax rate was 32.7% for the three months ended March 31, 2012, compared to 33.2% for the same period in the prior year. The mix of earnings between the tax jurisdictions has a significant impact on the effective tax rate. Each tax jurisdiction has its own set of tax laws and tax rates, and income earned by our subsidiaries is taxed independently by these various jurisdictions.  Currently, the applicable statutory income tax rates in the jurisdictions in which we operate range from 0% to 39%.

The components of our effective tax rate are as follows:

	Three Months Ended
	March 31, 2012		April 2, 2011
U.S. federal statutory rate	35.0	%	35.0	%
State income taxes	1.1		1.2
Mix of income in taxing jurisdictions	(3.7	)	(3.3	)
Other permanent differences and valuation allowances	0.3		0.3
Total effective tax rate	32.7	%	33.2	%

Financial reporting segments

Electronics and EDVs

Comparison of the three months ended March 31, 2012 with the three months ended April 2, 2011

Net sales.  Net sales for the three months ended March 31, 2012 were $42.4 million, which was comparable to $42.1 million for the same period in the prior year. Compared to the fourth quarter of 2011, sales were lower primarily due to changes in the production schedules of two EDV customers. We expect sales in the second quarter of 2012 to also be impacted by the changes in production schedules and to be comparable to the first quarter, with higher sales occurring in the second half of the year.

Segment operating income.  Segment operating income was $16.8 million, a decrease of $1.6 million, or 8.7%, from the same period in the prior year.  Segment operating income as a percent of net sales was 39.6% for the three months ended March 31, 2012, compared to 43.7% for the three months ended April 2, 2011.  The decrease in segment operating income and segment operating income margin was due to growth investments associated with new capacity, including an additional $1.3 million of non-cash depreciation expense. We expect segment operating income margins to improve as we get the benefit of our growth investments through higher sales.

Transportation and Industrial

Comparison of the three months ended March 31, 2012 with the three months ended April 2, 2011

Net sales.  Net sales for the three months ended March 31, 2012 were $86.2 million, a decrease of $8.3 million, or 8.8%, from the same period in the prior year.  The decrease was primarily due to unseasonably mild winter weather in North America and Europe, which temporarily impacted replacement battery sales, and the $1.5 million negative effect of foreign currency translation.

Segment operating income.  Segment operating income was $20.0 million, a decrease of $5.8 million, or 22.5%, from the same period in the prior year.  Segment operating income as a percent of net sales was 23.2% for the three months ended March 31, 2012, compared to 27.3% for the three months ended April 2, 2011.  The decrease in segment operating income and segment operating income margin was due to lower sales and costs associated with growth investments in Asia.

20

Separations Media

Comparison of the three months ended March 31, 2012 with the three months ended April 2, 2011

Net sales.  Net sales for the three months ended March 31, 2012 were $45.1 million, a decrease of $4.0 million, or 8.1%, from the same period in the prior year, including the negative effect of foreign currency translation of $1.6 million.  Healthcare sales decreased by $3.0 million primarily due to a shift in production by two contractually-bound customers from the first quarter to the remainder of the year and the effect of foreign currency translation.  Filtration and specialty product sales decreased $1.0 million, including the effect of foreign currency translation.

Segment operating income.  Segment operating income was $13.9 million, a decrease of $2.5 million, or 15.2%, from the same period in the prior year.  Segment operating income as a percent of net sales was 30.8% for the three months ended March 31, 2012, compared to 33.4% for the three months ended April 2, 2011. The decrease in segment operating income and segment operating income margin was due to lower sales and costs associated with our new hemodialysis production capacity.

Corporate and other costs

Comparison of the three months ended March 31, 2012 with the three months ended April 2, 2011

Corporate and other costs include costs associated with the corporate office and other costs that are not allocated to the reporting segments for segment reporting purposes, including amortization of identified intangible assets and performance-based incentive compensation.

Corporate and other costs for the three months ended March 31, 2012 were $8.7 million, compared to $10.4 million for the three months ended April 2, 2011. The decrease was due primarily to lower performance-based incentive compensation expense.

Liquidity and Capital Resources

Cash and cash equivalents decreased by $13.6 million during the three months ended March 31, 2012, as cash generated from operations and cash on hand were used to fund growth investments.

Operating activities.  Net cash provided by operating activities was $30.2 million in the three months ended March 31, 2012, consisting of cash generated from operations of $42.7 million, partially offset by changes in operating assets and liabilities. Accounts receivable decreased primarily due to lower sales as compared to the fourth quarter of 2011. Days sales outstanding is consistent with the prior year, and we have not experienced significant changes in accounts receivable aging or customer payment terms and believe that we have adequately provided for potential bad debts. Inventory increased based on production and capacity planning for expected customer order patterns. Inventory is generally not subject to obsolescence and does not have a shelf life, and we do not believe there is a significant risk of inventory impairment.  Accounts payable and accrued liabilities decreased primarily due to the payment of fiscal 2011 performance-based incentive compensation in the first quarter of 2012.

Investing activities.  In the three months ended March 31, 2012, total capital expenditures were $45.4 million, net of DOE grant awards of $1.9 million, compared to $29.7 million for the same period in the prior year. Capital expenditures were primarily related to capacity expansions in our electronics and EDVs segment. We expect total capital expenditures for fiscal 2012 to be approximately $150.0 million. As of March 31, 2012, we had $138.8 million of construction in progress which was primarily related to the capacity expansion projects.

Financing activities.  During the three months ended March 31, 2012, financing activities consisted primarily of scheduled principal payments under our credit agreement.

We intend to fund our ongoing operations with cash on hand, cash generated by operations and borrowings under the senior secured credit agreement. As of March 31, 2012, approximately 95% of our cash and cash equivalents were held by foreign subsidiaries. There were no significant restrictions on our ability to transfer funds with and among subsidiaries, or any material adverse tax consequences that would impact our ability to transfer funds held by foreign subsidiaries to the U.S.

Our senior secured credit agreement provides for a U.S. dollar term loan facility ($300.4 million outstanding at March 31, 2012), a euro term loan facility ($44.5 million outstanding at March 31, 2012) and a $90.0 million revolving credit facility. At March 31, 2012, we had no borrowings or undrawn standby letters of credit outstanding on the revolving credit facility. The term loans mature in July 2014 and the revolving credit facility matures in July 2013. Interest rates under the senior secured

21

credit agreement are, at our option, equal to either an alternate base rate or Eurocurrency base rate plus a specified margin. At March 31, 2012, interest rates on the U.S. dollar term loan and euro term loan were 2.25% and 2.36%, respectively. When loans are outstanding under the revolving credit facility, we are required to maintain a senior leverage ratio of indebtedness to Adjusted EBITDA of less than 3.00 to 1.00. At March 31, 2012, our senior leverage ratio was 1.21 to 1.00 and therefore, had no effect on borrowings available under the revolving credit facility. Adjusted EBITDA, as defined under the senior secured credit agreement, was as follows:

(in millions)	Twelve Months Ended March 31, 2012
Net income	$	98.3
Add/Subtract:
Depreciation and amortization expense	52.8
Interest expense, net	34.3
Income taxes	48.2
Stock-based compensation	12.6
Foreign currency gain	(3.0		)
Loss on disposal of property, plant and equipment	0.5
Costs related to the FTC litigation	0.4
Other non-cash or non-recurring items	0.1
Adjusted EBITDA	$	244.2

As of March 31, 2012, the calculation of the senior leverage ratio, as defined under the senior secured credit agreement, was as follows:

(in millions)
Indebtedness (1)	$	294.9
Adjusted EBITDA	$	244.2
Actual leverage ratio	1.21x

(1)Calculated as the sum of outstanding borrowings under the senior secured credit agreement, less cash on hand (not to exceed $50.0 million).

The senior secured credit agreement contains certain restrictive covenants which, among other things, limit capital spending, the incurrence of additional indebtedness, investments, dividends, transactions with affiliates, asset sales, acquisitions, mergers and consolidations, prepayments of other indebtedness, liens and encumbrances, and other matters customarily restricted in such agreements. The agreement also contains certain customary events of default, subject to grace periods, as appropriate. We believe that limitations imposed by the senior secured credit agreement will not significantly inhibit us from meeting our ongoing capital expenditure needs.

The 7.5% senior notes mature on November 15, 2017 and are guaranteed by most of our existing and future domestic restricted subsidiaries, subject to certain exceptions. Except under certain circumstances, the 7.5% senior notes do not require principal payments prior to their maturity in 2017. Interest on the 7.5% senior notes is payable semi-annually on May 15 and November 15. The 7.5% senior notes contain customary covenants and events of default, including covenants that limit our ability to incur debt, pay dividends and make investments.

Future debt service payments are expected to be paid out of cash flows from operations, borrowings on our revolving credit facility and future refinancing of our debt. Our cash interest requirements for the next twelve months are estimated to be $35.7 million.

We believe we have sufficient liquidity to meet our cash requirements over both the short (next twelve months) and long term (in relation to our debt service requirements). In evaluating the sufficiency of our liquidity, we considered cash on hand, expected cash flow to be generated from operations and available borrowings under our senior secured credit agreement compared to our anticipated cash requirements for debt service, working capital, cash taxes and capital expenditures and funding requirements for long-term liabilities. We anticipate that our cash on hand and operating cash flow, together with borrowings under the revolving credit facility, will be sufficient to meet our anticipated future operating expenses, capital expenditures and debt service obligations as they become due for at least the next twelve months. However, our ability to make scheduled payments of principal, to pay interest on or to refinance our indebtedness and to satisfy our other debt obligations will depend upon our future operating performance, which will be affected by general economic, financial, competitive, legislative, regulatory, business and other factors beyond our control. See “Item 1A. Risk Factors” in our most recent Annual Report on Form 10-K.

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From time to time, we may explore additional financing methods and other means to lower our cost of capital, which could include equity or debt financings and the application of the proceeds therefrom to the repayment of bank debt or other indebtedness. In addition, in connection with any future acquisitions, we may require additional funding, which may be provided in the form of additional debt or equity financing or a combination thereof. There can be no assurance that any additional financing will be available to us on acceptable terms or at all.

Foreign Operations

As of March 31, 2012, we manufacture our products at 14 strategically located facilities in North America, Europe and Asia. Net sales from the foreign locations were approximately $120.2 million and $123.9 million for the three months ended March 31, 2012 and April 2, 2011, respectively. Typically, we sell our products in the currency of the country where the manufacturing facility that produces the product is located. Sales to foreign customers are subject to numerous additional risks, including the impact of foreign government regulations, currency fluctuations, political uncertainties and differences in business practices. There can be no assurance that foreign governments will not adopt regulations or take other actions that would have a direct or indirect adverse impact on our business or market opportunities within such governments’ countries. Furthermore, there can be no assurance that the political, cultural and economic climate outside the United States will be favorable to our operations and growth strategy.

Environmental matters

Environmental obligations are accrued when such expenditures are probable and reasonably estimable. The amount of liability recorded is based on currently available information, including the progress of remedial investigations, current status of discussions with regulatory authorities regarding the method and extent of remediation, presently enacted laws and existing technology. Accruals for estimated losses from environmental obligations are adjusted as further information develops or circumstances change. Costs of future expenditures for environmental obligations are not discounted to their present value. We do not currently anticipate any material loss in excess of the amounts accrued. Future remediation expenses may be affected by a number of uncertainties including, but not limited to, the difficulty in estimating the extent and method of remediation, the evolving nature of environmental regulations and the availability and application of technology. We do not expect the resolution of such uncertainties to have a material adverse effect on our consolidated financial position or liquidity. Recoveries of environmental costs from other parties are recognized as assets when their receipt is deemed probable.

In connection with the acquisition of Membrana GmbH (“Membrana”) in 2002, we recorded a reserve for environmental obligations. The reserve provides for costs to remediate known environmental issues and operational upgrades which are required in order for us to remain in compliance with local regulations. The initial estimate and subsequent finalization of the reserve was included in the allocation of purchase price at the date of acquisition. The environmental reserve for the Membrana facility, which is denominated in euros, was $11.6 million at March 31, 2012. We anticipate the expenditures associated with the reserve will be made in the next twelve months.

We have indemnification agreements for certain environmental matters from Acordis A.G. (“Acordis”) and Akzo Nobel N.V. (“Akzo”), the prior owners of Membrana. Akzo originally provided broad environmental protections to Acordis with the right to assign such indemnities to Acordis’s successors. Akzo’s indemnifications relate to conditions existing prior to December 1999, which is the date that Membrana was sold to Acordis. In addition to the Akzo indemnification, Acordis provides separate indemnification of claims incurred from December 1999 through February 2002, the acquisition date. We will receive indemnification payments under the indemnification agreements after expenditures are made against approved claims. At March 31, 2012, amounts receivable under the indemnification agreements were $12.5 million.

Off-Balance Sheet Arrangements

We are not a party to any off-balance sheet arrangements that have, or are reasonably likely to have, a material current or future effect on our financial condition, revenues or expenses, results of operations, liquidity, capital expenditures or capital resources.

New Accounting Standards

See Note 2 to the condensed consolidated financial statements for information related to new accounting standards.

23

Item 3.  Quantitative and Qualitative Disclosures About Market Risk

We are exposed to various market risks, which are potential losses arising from adverse changes in market rates and prices, such as interest rates and foreign exchange fluctuations. We do not enter into derivatives or other financial instruments for trading or speculative purposes.

Interest rate risk

At March 31, 2012, we had fixed rate debt of $365.0 million and variable rate debt of $344.9 million. To reduce the interest rate risk inherent in our variable rate debt, we may utilize interest rate derivatives. As of March 31, 2012, there were no outstanding interest rate derivatives. The pre-tax earnings and cash flow impact resulting from a 100 basis point increase in interest rates on our variable rate debt, holding other variables constant, would be $3.4 million per year.

Currency risk

Outside of the United States, we maintain assets and operations in Europe and Asia. The results of operations and financial position of our foreign operations are principally measured in their respective currency and translated into U.S. dollars. As a result, exposure to foreign currency fluctuations exists. The reported income of these subsidiaries will be higher or lower depending on a weakening or strengthening of the U.S. dollar against the respective foreign currency. Our subsidiaries and affiliates also purchase and sell products and services in various currencies. As a result, we may be exposed to cost increases relative to the local currencies in the markets in which we sell. Because the percentage of our sales in foreign currencies differs from the percentage of our costs in foreign currencies, a change in the relative value of the U.S. dollar could have a disproportionate impact on our sales compared to our costs, which could impact our margins. A portion of our assets are based in our foreign locations and are translated into U.S. dollars at foreign currency exchange rates in effect as of the end of each period, with the effect of such translation reflected in accumulated other comprehensive income (loss). Accordingly, our consolidated shareholders’ equity will fluctuate depending upon the weakening or strengthening of the U.S. dollar against the respective foreign currency, primarily the euro.

The dollar/euro exchange rates used in our financial statements for the periods ended as set forth below were as follows:

	March 31, 2012	April 2, 2011
Period end rate	1.3339	1.4170
Period average rate for the three months ended	1.3099	1.3659

Our strategy for management of currency risk relies primarily on conducting our operations in a country’s respective currency and may, from time to time, involve foreign currency derivatives. As of March 31, 2012, we did not have any foreign currency derivatives outstanding.

Item 4.  Controls and Procedures

An evaluation of the effectiveness of our disclosure controls and procedures (as defined in Rule 13a-15(e) or 15d-15(e) promulgated under the Exchange Act) was performed under the supervision, and with the participation of, our management, including our Chief Executive Officer and Chief Financial Officer. Our disclosure controls are designed to ensure that information required to be disclosed in reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the rules and forms of the Securities and Exchange Commission. Based upon our evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were effective as of March 31, 2012 to ensure that information required to be disclosed in the reports that we file under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms, and is accumulated and communicated to management, including our Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure.

During the three months ended March 31, 2012, there has been no change in our internal control over financial reporting (as defined in Rules 13a-15(f) or 15d-15(f) promulgated under the Exchange Act) that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

PART II — OTHER INFORMATION

Item 1.  Legal Proceedings

On March 20, 2008, we received a letter from the United States Federal Trade Commission (the “FTC”) requesting that we voluntarily provide certain documents and information to the FTC regarding our acquisition of Microporous Holding Corporation, the parent company of Microporous Products L.P. (“Microporous”), which was completed on February 29, 2008.

24

The letter stated that the FTC was conducting an investigation to determine whether the Microporous acquisition will substantially lessen competition in any relevant market and thereby violate federal antitrust laws. We voluntarily responded to the letter in writing and through supplemental telephone conversations and meetings.

On April 7, 2008, we and our wholly-owned subsidiary, Daramic LLC, each received from the FTC a subpoena and interrogatories requesting substantially similar documents and information as requested in the FTC’s initial letter, as well as additional documents and information. We responded fully to this request and met on several occasions with various members of the FTC staff and FTC commissioners (“Commissioners”) in an effort to answer their questions and resolve the investigation.

On September 9, 2008, the FTC issued an administrative complaint against us alleging that our actions and the acquisition of Microporous have substantially lessened competition in North American markets for lead-acid battery separators. We filed an answer to the complaint on October 15, 2008 denying the material allegations of the complaint. The matter was presented before an Administrative Law Judge (“ALJ”) of the FTC and the hearing concluded on June 12, 2009. In October 2009, the ALJ granted our request to re-open the record to take additional evidence. On February 22, 2010, the FTC’s ALJ issued an initial decision in which he recommended to the FTC that it order us to divest substantially all of the acquired Microporous assets, which include the manufacturing facilities located in Piney Flats, Tennessee and Feistritz, Austria, and restore the competitive environment to that which existed prior to the acquisition, while ruling in our favor on other portions of the complaint. On March 15, 2010, we filed a Notice of Appeal with the FTC. On November 5, 2010, we were notified that the Commissioners affirmed the relief initially granted by the FTC’s ALJ issued on February 22, 2010. The Commissioners ordered that we proceed with the ALJ’s recommendations to divest substantially all of the Microporous assets acquired in February 2008.

We believe that this decision is inconsistent with the law and the facts presented at the hearing and that the Microporous acquisition is and will continue to be beneficial to our customers and the industry. On January 28, 2011, we filed a petition with the U.S. Court of Appeals for the 11th Circuit to review the FTC’s November 5, 2010 order and opinion. It is not possible to predict with certainty whether we will be successful in the appellate process or the timing of a final decision. If the appellate court affirms the FTC’s decision, and we choose not to seek Supreme Court review or the Supreme Court denies our petition seeking review of the case, then we will be required to divest substantially all of the assets acquired in the Microporous acquisition, and we will be subject to some prospective restrictions on our future conduct.

We believe that a final judicial resolution to the challenge by the FTC to the Microporous acquisition could take one or more years. Although it is difficult to predict the outcome, timing or impact of this matter at this time, we believe that the final resolution will not have a material adverse impact on our business, financial condition or results of operations.

Our core energy storage business produces polymer-based membrane battery separators used in transportation, industrial and consumer electronic applications.  The acquisition of the Microporous business extended our product portfolio into the niche, mature deep cycle market for rubber-based battery separators, with considerable overlap to customers we currently serve with other products.  We do not believe that a required divestiture of all or a portion of the Microporous assets would significantly impact our core energy storage business or the long-term growth drivers impacting this business, including growth in Asia, strong demand for consumer electronics and growing demand for electric drive vehicles.

For the fiscal year ended December 31, 2011, the Microporous business represented approximately 10% of consolidated revenue and operating income, including the facility that we completed and shifted production to in Feistritz, Austria post-acquisition.  At December 31, 2011, Microporous assets were less than 5% of consolidated assets.  Based on the growth in revenues and profits that we have experienced in the last two years in our core energy storage and separations media businesses, as well as the impact of capacity expansions, we expect that the percentage of consolidated revenues and total assets represented by Microporous will continue to decline.  The impact of a final resolution to this matter may be affected by a number of uncertainties, including, but not limited to, whether we are required to divest all or a portion of the Microporous assets, the timing of a potential divestiture, the proceeds of such a divestiture and the incremental growth in our core businesses.  If we were required to divest of all or a portion of the Microporous assets, we would intend to sell the assets at fair market value and the proceeds of such a sale would be available to support continued investments in the faster growing and more profitable core energy storage and separations media businesses.

25

Item 6.    Exhibits

Exhibit No.	Exhibit Description
31.1	Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2	Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.1	Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2	Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101	Interactive Data Files

26

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Date: May 3, 2012		POLYPORE INTERNATIONAL, INC.
		(Registrant)
	By:	/s/ Robert B. Toth
		Robert B. Toth
		President and Chief Executive Officer
		(principal executive officer)
	By:	/s/ Lynn Amos
		Lynn Amos
		Chief Financial Officer
		(principal financial officer and principal accounting officer)

27

EX-31.1

Exhibit 31.1

POLYPORE INTERNATIONAL, INC.

CHIEF EXECUTIVE OFFICER CERTIFICATION PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Robert B. Toth, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Polypore International, Inc.;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 3, 2012	/s/ Robert B. Toth
	Robert B. Toth
	President and Chief Executive Officer

EX-31.2

Exhibit 31.2

POLYPORE INTERNATIONAL, INC.

CHIEF FINANCIAL OFFICER CERTIFICATION PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Lynn Amos, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Polypore International, Inc.;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 3, 2012	/s/ Lynn Amos
	Lynn Amos
	Chief Financial Officer

EX-32.1

Exhibit 32.1

POLYPORE INTERNATIONAL, INC.

CHIEF EXECUTIVE OFFICER CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Polypore International, Inc. (the “Company”) on Form 10-Q for the period ended March 31, 2012 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned, Robert B. Toth, President and Chief Executive Officer of the Company, does hereby certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1.The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: May 3, 2012	/s/ Robert B. Toth
	Robert B. Toth
	President and Chief Executive Officer

EX-32.2

Exhibit 32.2

POLYPORE INTERNATIONAL, INC.

CHIEF FINANCIAL OFFICER CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Polypore International, Inc. (the “Company”) on Form 10-Q for the period ended March 31, 2012 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned, Lynn Amos, Chief Financial Officer of the Company, does hereby certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1.The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: May 3, 2012	/s/ Lynn Amos
	Lynn Amos
	Chief Financial Officer

XML

Noncontrolling Interest (Details) (Daramic Xiangyang, USD $)	27 Months Ended
	Mar. 31, 2012
Noncontrolling Interest
Contributions to joint venture	$ 7,370,000
Ownership percentage of joint venture	65.00%
Camel Group Co., Ltd
Noncontrolling Interest
Contributions to joint venture	$ 2,554,000
Ownership percentage of joint venture	35.00%

XML

Financial Statements of Guarantors (Tables)

3 Months Ended

Mar. 31, 2012

Financial Statements of Guarantors

Condensed consolidating balance sheet

Condensed consolidating balance sheet
March 31, 2012

(in thousands)	Combined Guarantor Subsidiaries		Combined Non-Guarantor Subsidiaries		The Company			Eliminations			Consolidated
Assets
Cash and cash equivalents	$	—	$	75,799	$	3,157		$	—		$	78,956
Accounts receivable, net	37,400		82,613		—			—			120,013
Inventories	37,147		70,150		—			—			107,297
Prepaid and other	5,090		21,481		31			—			26,602
Total current assets	79,637		250,043		3,188			—			332,868
Due from affiliates	482,640		297,887		410,018			(1,190,545		)	—
Investment in subsidiaries	167,329		321,035		607,432			(1,095,796		)	—
Property, plant and equipment, net	270,288		301,164		—			—			571,452
Goodwill	—		—		469,319			—			469,319
Intangibles and loan acquisition costs, net	—		—		129,198			—			129,198
Other	157		7,686		—			—			7,843
Total assets	$	1,000,051	$	1,177,815	$	1,619,155		$	(2,286,341	)	$	1,510,680
Liabilities and shareholders’ equity
Accounts payable and accrued liabilities	$	28,357	$	48,723	$	10,470		$	—		$	87,550
Income taxes payable	—		3,754		(413		)	—			3,341
Current portion of debt	—		467		3,229			—			3,696
Total current liabilities	28,357		52,944		13,286			—			94,587
Due to affiliates	506,909		271,395		412,241			(1,190,545		)	—
Debt, less current portion	—		44,002		662,197			—			706,199
Pension obligations, less current portion	—		81,493		—			—			81,493
Deferred income taxes and other	51,018		45,952		143			—			97,113
Shareholders’ equity	413,767		682,029		531,288			(1,095,796		)	531,288
Total liabilities and shareholders’ equity	$	1,000,051	$	1,177,815	$	1,619,155		$	(2,286,341	)	$	1,510,680

Condensed consolidating balance sheet
December 31, 2011

(in thousands)	Combined Guarantor Subsidiaries		Combined Non-Guarantor Subsidiaries		The Company		Eliminations			Consolidated
Assets
Cash and cash equivalents	$	—	$	65,495	$	27,079	$	—		$	92,574
Accounts receivable, net	51,831		82,185		—		—			134,016
Inventories	31,603		58,841		—		—			90,444
Prepaid and other	6,345		18,324		62		—			24,731
Total current assets	89,779		224,845		27,141		—			341,765
Due from affiliates	549,943		282,244		377,981		(1,210,168		)	—
Investment in subsidiaries	177,143		321,215		570,456		(1,068,814		)	—
Property, plant and equipment, net	235,051		292,727		—		—			527,778
Goodwill	—		—		469,319		—			469,319
Intangibles and loan acquisition costs, net	—		—		133,586		—			133,586
Other	157		9,274		—		—			9,431
Total assets	$	1,052,073	$	1,130,305	$	1,578,483	$	(2,278,982	)	$	1,481,879
Liabilities and shareholders’ equity
Accounts payable and accrued liabilities	$	41,301	$	51,391	$	3,547	$	—		$	96,239
Income taxes payable	—		5,231		650		—			5,881
Current portion of debt	—		453		3,229		—			3,682
Total current liabilities	41,301		57,075		7,426		—			105,802
Due to affiliates	554,230		247,424		408,514		(1,210,168		)	—
Debt, less current portion	—		42,832		663,004		—			705,836
Pension obligations, less current portion	—		78,086		—		—			78,086
Deferred income taxes and other	47,140		45,476		146		—			92,762
Shareholders’ equity	409,402		659,412		499,393		(1,068,814		)	499,393
Total liabilities and shareholders’ equity	$	1,052,073	$	1,130,305	$	1,578,483	$	(2,278,982	)	$	1,481,879

Condensed consolidating statement of income

Condensed consolidating statement of income
For the three months ended March 31, 2012

(in thousands)	Combined Guarantor Subsidiaries			Combined Non-Guarantor Subsidiaries		The Company			Eliminations			Consolidated
Net sales	$	53,521		$	120,184	$	—		$	—		$	173,705
Cost of goods sold	17,412			85,269		—			—			102,681
Gross profit	36,109			34,915		—			—			71,024
Selling, general and administrative expenses	17,309			12,274		4,303			—			33,886
Operating income (loss)	18,800			22,641		(4,303		)	—			37,138
Interest expense and other	(2,584		)	2,797		9,029			—			9,242
Equity in earnings of subsidiaries	—			—		(28,663		)	28,663			—
Income before income taxes	21,384			19,844		15,331			(28,663		)	27,896
Income taxes	7,931			4,634		(3,442		)	—			9,123
Net income	$	13,453		$	15,210	$	18,773		$	(28,663	)	$	18,773

Condensed consolidating statement of income
For the three months ended April 2, 2011

(in thousands)	Combined Guarantor Subsidiaries			Combined Non-Guarantor Subsidiaries		The Company			Eliminations			Consolidated
Net sales	$	61,745		$	123,929	$	—		$	—		$	185,674
Cost of goods sold	19,390			86,818		—			—			106,208
Gross profit	42,355			37,111		—			—			79,466
Selling, general and administrative expenses	17,015			12,431		1,104			—			30,550
Operating income (loss)	25,340			24,680		(1,104		)	—			48,916
Interest expense and other	(837		)	2,505		8,829			—			10,497
Equity in earnings of subsidiaries	—			—		(33,515		)	33,515			—
Income before income taxes	26,177			22,175		23,582			(33,515		)	38,419
Income taxes	8,964			5,873		(2,099		)	—			12,738
Net income	$	17,213		$	16,302	$	25,681		$	(33,515	)	$	25,681

Condensed consolidating statement of comprehensive income

Condensed consolidating statement of comprehensive income

For the three months ended March 31, 2012

(in thousands)	Combined Guarantor Subsidiaries		Combined Non-Guarantor Subsidiaries			The Company			Eliminations			Consolidated
Net income	$	13,453	$	15,210		$	18,773		$	(28,663	)	$	18,773
Other comprehensive income (loss):
Foreign currency translation adjustment	—		8,302			(271		)	858			8,889
Change in net actuarial loss and prior service credit	—		(320		)	—			—			(320		)
Equity in earnings of subsidiaries	—		—			8,840			(8,840		)	—
Comprehensive income	$	13,453	$	23,192		$	27,342		$	(36,645	)	$	27,342

Condensed consolidating statement of comprehensive income

For the three months ended April 2, 2011

(in thousands)	Combined Guarantor Subsidiaries		Combined Non-Guarantor Subsidiaries			The Company			Eliminations			Consolidated
Net income	$	17,213	$	16,302		$	25,681		$	(33,515	)	$	25,681
Other comprehensive income (loss):
Foreign currency translation adjustment	—		12,374			(1,890		)	(777		)	9,707
Change in net actuarial loss and prior service credit	—		(368		)	—			—			(368		)
Equity in earnings of subsidiaries	—		—			11,229			(11,229		)	—
Comprehensive income	$	17,213	$	28,308		$	35,020		$	(45,521	)	$	35,020

Condensed consolidating statement of cash flows

Condensed consolidating statement of cash flows
For the three months ended March 31, 2012

(in thousands)	Combined Guarantor Subsidiaries			Combined Non-Guarantor Subsidiaries			The Company			Eliminations			Consolidated
Net cash provided by (used in) operating activities	$	26,400		$	6,121		$	(2,565	)	$	260		$	30,216
Investing activities:
Purchases of property, plant and equipment, net	(38,689		)	(6,661		)	—			—			(45,350		)
Net cash used in investing activities	(38,689		)	(6,661		)	—			—			(45,350		)
Financing activities:
Principal payments on debt	—			(117		)	(807		)	—			(924		)
Proceeds from stock option exercises	—			—			284			—			284
Intercompany transactions, net	12,289			8,774			(20,803		)	(260		)	—
Other	—			—			(31		)	—			(31		)
Net cash provided by (used in) financing activities	12,289			8,657			(21,357		)	(260		)	(671		)
Effect of exchange rate changes on cash and cash equivalents	—			2,187			—			—			2,187
Net increase (decrease) in cash and cash equivalents	—			10,304			(23,922		)	—			(13,618		)
Cash and cash equivalents at beginning of period	—			65,495			27,079			—			92,574
Cash and cash equivalents at end of period	$	—		$	75,799		$	3,157		$	—		$	78,956

Condensed consolidating statement of cash flows
For the three months ended April 2, 2011

(in thousands)	Combined Guarantor Subsidiaries			Combined Non-Guarantor Subsidiaries			The Company			Eliminations			Consolidated
Net cash provided by (used in) operating activities	$	29,374		$	9,990		$	(2,466	)	$	1,182		$	38,080
Investing activities:
Purchases of property, plant and equipment, net	(20,615		)	(9,062		)	—			—			(29,677		)
Net cash used in investing activities	(20,615		)	(9,062		)	—			—			(29,677		)
Financing activities:
Principal payments on debt	—			(123		)	(1,615		)	—			(1,738		)
Proceeds from stock option exercises	—			—			2,295			—			2,295
Intercompany transactions, net	(8,759		)	6,854			3,087			(1,182		)	—
Other	—			—			(289		)	—			(289		)
Net cash provided by (used in) financing activities	(8,759		)	6,731			3,478			(1,182		)	268
Effect of exchange rate changes on cash and cash equivalents	—			4,241			—			—			4,241
Net increase in cash and cash equivalents	—			11,900			1,012			—			12,912
Cash and cash equivalents at beginning of period	—			58,172			31,783			—			89,955
Cash and cash equivalents at end of period	$	—		$	70,072		$	32,795		$	—		$	102,867

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Financial Statements of Guarantors (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Apr. 02, 2011
Net income	$ 18,773	$ 25,681
Other comprehensive income (loss):
Foreign currency translation adjustment	8,889	9,707
Change in net actuarial loss and prior service credit	(320)	(368)
Foreign currency translation adjustment, income tax expense	534	1,558
Comprehensive income	27,342	35,020
Combined Guarantor Subsidiaries
Net income	13,453	17,213
Other comprehensive income (loss):
Comprehensive income	13,453	17,213
Combined Non-Guarantor Subsidiaries
Net income	15,210	16,302
Other comprehensive income (loss):
Foreign currency translation adjustment	8,302	12,374
Change in net actuarial loss and prior service credit	(320)	(368)
Comprehensive income	23,192	28,308
The Company
Net income	18,773	25,681
Other comprehensive income (loss):
Foreign currency translation adjustment	(271)	(1,890)
Equity in earnings of subsidiaries	8,840	11,229
Comprehensive income	27,342	35,020
Eliminations
Net income	(28,663)	(33,515)
Other comprehensive income (loss):
Foreign currency translation adjustment	858	(777)
Equity in earnings of subsidiaries	(8,840)	(11,229)
Comprehensive income	$ (36,645)	$ (45,521)

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Recent Accounting Pronouncements

3 Months Ended

Mar. 31, 2012

Recent Accounting Pronouncements

Recent Accounting Pronouncements

2.             Recent Accounting Pronouncements

In June 2011, the FASB issued guidance on the disclosure and presentation requirements for comprehensive income. This new guidance requires comprehensive income to be presented in either a single continuous financial statement or in two separate but consecutive financial statements. The adoption of this guidance in the Company’s March 31, 2012 condensed consolidated financial statements only affected presentation and did not have an impact on the Company’s financial condition or results of operations.

In September 2011, the FASB amended the guidance on the annual testing of goodwill for impairment. The amended guidance will allow companies to assess qualitative factors to determine if it is more likely than not that goodwill might be impaired and whether it is necessary to perform the two-step goodwill impairment test required under current accounting standards. The guidance is effective for annual and interim goodwill impairment tests performed for fiscal years beginning after December 15, 2011. The Company will adopt this guidance in performing its annual goodwill impairment test as of the first day of the fourth quarter of 2012.  The adoption of this guidance is not expected to have an impact on the Company’s financial condition or results of operations.

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Pension Plans (Details) (Pension Plans, USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Apr. 02, 2011
Pension Plans
Components of net periodic benefit cost:
Service cost	$ 422	$ 380
Interest cost	1,207	1,230
Expected return on plan assets	(215)	(223)
Amortization of prior service cost	(13)	(13)
Recognized net actuarial loss	119	19
Net periodic benefit cost	$ 1,520	$ 1,393

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Fair Value of Financial Instruments (Details) (7.5% senior notes, USD $)	Mar. 31, 2012	Dec. 31, 2011
Fair Value of Financial Instruments
Debt instrument, interest rate (as a percent)	7.50%	7.50%
Level one
Fair Value of Financial Instruments
Debt instrument, interest rate (as a percent)	7.50%	7.50%
Fair value of 7.5% senior notes	385,075,000

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Environmental Matters (Details) (Membrana GmbH, USD $)	3 Months Ended
	Mar. 31, 2012	Dec. 31, 2011
Membrana GmbH
Environmental Matters
Environmental reserve	$ 11,599,000	$ 11,957,000
Amounts receivable under the indemnification agreements	$ 12,462,000	$ 12,099,000
Period over which expenditures will be made (in months)	12M

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Government Grants (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2012	Apr. 02, 2011	Jan. 01, 2011	Dec. 31, 2011
Government Grants
Grant awarded by DOE			$ 49,264,000
DOE grant award recognized	48,479,000
Grant offset to property, plant and equipment	1,910,000	6,416,000
Grant offset to operating expenses	604,000	532,000
Amount due from government agencies	$ 271,000			$ 1,483,000

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Description of Business and Basis of Presentation

3 Months Ended

Mar. 31, 2012

Description of Business and Basis of Presentation

Description of Business and Basis of Presentation

1.             Description of Business and Basis of Presentation

Description of Business

Polypore International, Inc. (the “Company”) is a leading global high technology filtration company that develops, manufactures and markets specialized microporous membranes used in separation and filtration processes. The Company has a global presence in the major geographic markets of North America, South America, Europe and Asia.

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements include the accounts of the Company and all majority-owned subsidiaries after elimination of intercompany accounts and transactions.  The unaudited condensed consolidated financial statements are prepared in accordance with U.S. generally accepted accounting principles for interim financial information. Accordingly, the unaudited condensed consolidated financial statements and notes do not contain certain information included in the Company’s annual financial statements. In the opinion of management, all normal and recurring adjustments that are necessary for a fair presentation have been made. Certain amounts previously presented in the condensed consolidated financial statements for prior periods have been reclassified to conform to current classifications. Operating results for the three months ended March 31, 2012 are not necessarily indicative of the results that may be expected for the fiscal year ending December 29, 2012. The unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2011.

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Related Party Transactions (Details) (USD $)	3 Months Ended
	Mar. 31, 2012	Apr. 02, 2011	Dec. 31, 2011
Related party transactions
Ownership percentage in related party	100.00%
German Subsidiary | All related parties
Related party transactions
Equity method investment	$ 789,000		$ 588,000
Charges from the affiliates for work performed	327,000	281,000
Amounts due to the affiliates	$ 75,000		$ 107,000
German Subsidiary | Patent and trademark service provider
Related party transactions
Ownership percentage in related party	33.00%
German Subsidiary | Research company
Related party transactions
Ownership percentage in related party	25.00%

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Condensed consolidated balance sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 78,956	$ 92,574
Accounts receivable, net	120,013	134,016
Inventories	107,297	90,444
Deferred income taxes	3,145	3,171
Prepaid and other	23,457	21,560
Total current assets	332,868	341,765
Property, plant and equipment, net	571,452	527,778
Goodwill	469,319	469,319
Intangibles and loan acquisition costs, net	129,198	133,586
Other	7,843	9,431
Total assets	1,510,680	1,481,879
Current liabilities:
Accounts payable	34,941	34,332
Accrued liabilities	52,609	61,907
Income taxes payable	3,341	5,881
Current portion of debt	3,696	3,682
Total current liabilities	94,587	105,802
Debt, less current portion	706,199	705,836
Pension obligations, less current portion	81,493	78,086
Deferred income taxes	80,909	76,601
Other	16,204	16,161
Commitments and contingencies
Shareholders' equity:
Preferred stock - 15,000,000 shares authorized, no shares issued and outstanding
Common stock, $.01 par value - 200,000,000 shares authorized, 46,533,576 and 46,499,180 issued and outstanding at March 31, 2012 and December 31, 2011	465	465
Paid-in capital	531,797	527,243
Retained earnings (accumulated deficit)	3,590	(15,183)
Accumulated other comprehensive loss	(8,558)	(17,127)
Total Polypore shareholders' equity	527,294	495,398
Noncontrolling interest	3,994	3,995
Total shareholders' equity	531,288	499,393
Total liabilities and shareholders' equity	$ 1,510,680	$ 1,481,879

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Condensed consolidated statements of comprehensive income (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Apr. 02, 2011
Condensed consolidated statements of comprehensive income
Foreign currency translation adjustment, income tax expense	$ 534	$ 1,558

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Financial Statements of Guarantors (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011	Apr. 02, 2011	Jan. 01, 2011
Financial Statements of Guarantors
Ownership percentage in domestic subsidiaries	100.00%
Assets
Cash and cash equivalents	$ 78,956	$ 92,574	$ 102,867	$ 89,955
Accounts receivable, net	120,013	134,016
Inventories	107,297	90,444
Prepaid and other	26,602	24,731
Total current assets	332,868	341,765
Property, plant and equipment, net	571,452	527,778
Goodwill	469,319	469,319
Intangibles and loan acquisition costs, net	129,198	133,586
Other	7,843	9,431
Total assets	1,510,680	1,481,879
Liabilities and shareholders' equity
Accounts payable and accrued liabilities	87,550	96,239
Income taxes payable	3,341	5,881
Current portion of debt	3,696	3,682
Total current liabilities	94,587	105,802
Debt, less current portion	706,199	705,836
Pension obligations, less current portion	81,493	78,086
Deferred income taxes and other	97,113	92,762
Shareholders' equity	531,288	499,393
Total liabilities and shareholders' equity	1,510,680	1,481,879
Combined Guarantor Subsidiaries
Assets
Accounts receivable, net	37,400	51,831
Inventories	37,147	31,603
Prepaid and other	5,090	6,345
Total current assets	79,637	89,779
Due from affiliates	482,640	549,943
Investment in subsidiaries	167,329	177,143
Property, plant and equipment, net	270,288	235,051
Other	157	157
Total assets	1,000,051	1,052,073
Liabilities and shareholders' equity
Accounts payable and accrued liabilities	28,357	41,301
Total current liabilities	28,357	41,301
Due to affiliates	506,909	554,230
Deferred income taxes and other	51,018	47,140
Shareholders' equity	413,767	409,402
Total liabilities and shareholders' equity	1,000,051	1,052,073
Combined Non-Guarantor Subsidiaries
Assets
Cash and cash equivalents	75,799	65,495	70,072	58,172
Accounts receivable, net	82,613	82,185
Inventories	70,150	58,841
Prepaid and other	21,481	18,324
Total current assets	250,043	224,845
Due from affiliates	297,887	282,244
Investment in subsidiaries	321,035	321,215
Property, plant and equipment, net	301,164	292,727
Other	7,686	9,274
Total assets	1,177,815	1,130,305
Liabilities and shareholders' equity
Accounts payable and accrued liabilities	48,723	51,391
Income taxes payable	3,754	5,231
Current portion of debt	467	453
Total current liabilities	52,944	57,075
Due to affiliates	271,395	247,424
Debt, less current portion	44,002	42,832
Pension obligations, less current portion	81,493	78,086
Deferred income taxes and other	45,952	45,476
Shareholders' equity	682,029	659,412
Total liabilities and shareholders' equity	1,177,815	1,130,305
The Company
Assets
Cash and cash equivalents	3,157	27,079	32,795	31,783
Prepaid and other	31	62
Total current assets	3,188	27,141
Due from affiliates	410,018	377,981
Investment in subsidiaries	607,432	570,456
Goodwill	469,319	469,319
Intangibles and loan acquisition costs, net	129,198	133,586
Total assets	1,619,155	1,578,483
Liabilities and shareholders' equity
Accounts payable and accrued liabilities	10,470	3,547
Income taxes payable	(413)	650
Current portion of debt	3,229	3,229
Total current liabilities	13,286	7,426
Due to affiliates	412,241	408,514
Debt, less current portion	662,197	663,004
Deferred income taxes and other	143	146
Shareholders' equity	531,288	499,393
Total liabilities and shareholders' equity	1,619,155	1,578,483
Eliminations
Assets
Due from affiliates	(1,190,545)	(1,210,168)
Investment in subsidiaries	(1,095,796)	(1,068,814)
Total assets	(2,286,341)	(2,278,982)
Liabilities and shareholders' equity
Due to affiliates	(1,190,545)	(1,210,168)
Shareholders' equity	(1,095,796)	(1,068,814)
Total liabilities and shareholders' equity	$ (2,286,341)	$ (2,278,982)

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Debt (Tables)

3 Months Ended

Mar. 31, 2012

Debt

Schedule of debt

(in thousands)	March 31, 2012		December 31, 2011
Senior credit agreement:
Revolving credit facility	$	—	$	—
Term loan facilities	344,895		344,518
	344,895		344,518
7.5% senior notes	365,000		365,000
	709,895		709,518
Less current maturities	3,696		3,682
Long-term debt	$	706,199	$	705,836

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Financial Statements of Guarantors (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Apr. 02, 2011
Net sales	$ 173,705	$ 185,674
Cost of goods sold	102,681	106,208
Gross profit	71,024	79,466
Selling, general and administrative expenses	33,886	30,550
Operating income	37,138	48,916
Interest expense and other	9,242	10,497
Income before income taxes	27,896	38,419
Income taxes	9,123	12,738
Net income	18,773	25,681
Combined Guarantor Subsidiaries
Net sales	53,521	61,745
Cost of goods sold	17,412	19,390
Gross profit	36,109	42,355
Selling, general and administrative expenses	17,309	17,015
Operating income	18,800	25,340
Interest expense and other	(2,584)	(837)
Income before income taxes	21,384	26,177
Income taxes	7,931	8,964
Net income	13,453	17,213
Combined Non-Guarantor Subsidiaries
Net sales	120,184	123,929
Cost of goods sold	85,269	86,818
Gross profit	34,915	37,111
Selling, general and administrative expenses	12,274	12,431
Operating income	22,641	24,680
Interest expense and other	2,797	2,505
Income before income taxes	19,844	22,175
Income taxes	4,634	5,873
Net income	15,210	16,302
The Company
Selling, general and administrative expenses	4,303	1,104
Operating income	(4,303)	(1,104)
Interest expense and other	9,029	8,829
Equity in earnings of subsidiaries	(28,663)	(33,515)
Income before income taxes	15,331	23,582
Income taxes	(3,442)	(2,099)
Net income	18,773	25,681
Eliminations
Equity in earnings of subsidiaries	28,663	33,515
Income before income taxes	(28,663)	(33,515)
Net income	$ (28,663)	$ (33,515)

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Segment Information (Tables)

3 Months Ended

Mar. 31, 2012

Segment Information

Schedule of financial information relating to the reportable segments

	Three Months Ended
(in thousands)	March 31, 2012			April 2, 2011
Net sales to external customers (by major product group):
Electronics and EDVs	$	42,388		$	42,144
Transportation and industrial	86,202			94,440
Energy storage	128,590			136,584
Healthcare	27,545			30,531
Filtration and specialty	17,570			18,559
Separations media	45,115			49,090
Total net sales to external customers	$	173,705		$	185,674
Operating income:
Electronics and EDVs	$	16,795		$	18,387
Transportation and industrial	20,014			25,771
Energy storage	36,809			44,158
Separations media	13,863			16,390
Corporate and other	(8,696		)	(10,375		)
Segment operating income	41,976			50,173
Stock-based compensation	4,270			1,035
Non-recurring and other costs	568			222
Total operating income	37,138			48,916
Reconciling items:
Interest expense, net	8,791			8,899
Foreign currency and other	451			1,598
Income before income taxes	$	27,896		$	38,419
Depreciation and amortization:
Electronics and EDVs	$	3,161		$	1,873
Transportation and industrial	2,901			2,932
Energy storage	6,062			4,805
Separations media	3,322			3,093
Corporate and other	4,148			4,185
Total depreciation and amortization	$	13,532		$	12,083

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Condensed consolidated statements of cash flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Apr. 02, 2011
Operating activities:
Net income	$ 18,773	$ 25,681
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation expense	9,441	7,962
Amortization expense	4,091	4,121
Amortization of loan acquisition costs	617	608
Stock-based compensation	4,270	1,035
Loss on disposal of property, plant and equipment	289	163
Foreign currency loss	1,128	1,726
Deferred income taxes	4,115	6,778
Changes in operating assets and liabilities:
Accounts receivable	15,510	(11,998)
Inventories	(15,384)	(784)
Prepaid and other current assets	575	(2,126)
Accounts payable and accrued liabilities	(10,470)	5,532
Income taxes payable	(2,345)	956
Other, net	(394)	(1,574)
Net cash provided by operating activities	30,216	38,080
Investing activities:
Purchases of property, plant and equipment, net	(45,350)	(29,677)
Net cash used in investing activities	(45,350)	(29,677)
Financing activities:
Principal payments on debt	(924)	(1,738)
Proceeds from stock option exercises	284	2,295
Noncontrolling interest	(31)	(14)
Payments for loan acquisition costs		(275)
Net cash provided by (used in) financing activities	(671)	268
Effect of exchange rate changes on cash and cash equivalents	2,187	4,241
Net increase (decrease) in cash and cash equivalents	(13,618)	12,912
Cash and cash equivalents at beginning of period	92,574	89,955
Cash and cash equivalents at end of period	$ 78,956	$ 102,867

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Condensed consolidated balance sheets (Parenthetical) (USD $)	Mar. 31, 2012	Dec. 31, 2011
Condensed consolidated balance sheets
Preferred stock, shares authorized	15,000,000	15,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	46,533,576	46,499,180
Common stock, shares outstanding	46,533,576	46,499,180

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Related Party Transactions

3 Months Ended

Mar. 31, 2012

Related Party Transactions

Related Party Transactions

10.          Related Party Transactions

The Company’s German subsidiary has a 33% equity investment in a patent and trademark service provider and a 25% equity investment in a research company. The investments are accounted for under the equity method of accounting and were $789,000 and $588,000 at March 31, 2012 and December 31, 2011, respectively. Charges from the affiliates for work performed were $327,000 and $281,000 for the three months ended March 31, 2012 and April 2, 2011, respectively. Amounts due to the affiliates were $75,000 and $107,000 at March 31, 2012 and December 31, 2011, respectively.

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Document and Entity Information	3 Months Ended
	Mar. 31, 2012	Apr. 25, 2012
Document and Entity Information
Entity Registrant Name	Polypore International, Inc.
Entity Central Index Key	0001292556
Document Type	10-Q
Document Period End Date	Mar. 31, 2012
Amendment Flag	false
Current Fiscal Year End Date	--12-29
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		46,533,576
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q1

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Noncontrolling Interest

3 Months Ended

Mar. 31, 2012

Noncontrolling Interest

Noncontrolling Interest

11.          Noncontrolling Interest

In 2010, the Company entered into a joint venture agreement with a customer, Camel Group Co., Ltd (“Camel”), a leading battery manufacturer in China, to produce lead-acid battery separators primarily for Camel’s use. The joint venture, Daramic Xiangyang Battery Separator Co., Ltd. (“Daramic Xiangyang”), is located at Camel’s facility and is expected to start production in 2012. In accordance with the joint venture agreement, the Company has made cash contributions of $7,370,000 for a 65% ownership interest in the joint venture, and Camel has contributed cash of $2,554,000 and land for a 35% ownership interest. In exchange for notes payable, Daramic Xiangyang has purchased production assets from the Company’s former facility in Potenza, Italy, and will purchase a building currently under construction from Camel.

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Condensed consolidated statements of income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Apr. 02, 2011
Net sales	$ 173,705	$ 185,674
Cost of goods sold	102,681	106,208
Gross profit	71,024	79,466
Selling, general and administrative expenses	33,886	30,550
Operating income	37,138	48,916
Other (income) expense:
Interest expense, net	8,791	8,899
Foreign currency and other	451	1,598
Other (income) expense total	9,242	10,497
Income before income taxes	27,896	38,419
Income taxes	9,123	12,738
Net income	$ 18,773	$ 25,681
Net income per share:
Basic (in dollars per share)	$ 0.40	$ 0.56
Diluted (in dollars per share)	$ 0.40	$ 0.55
Weighted average shares outstanding:
Basic (in shares)	46,497,701	45,685,520
Diluted (in shares)	47,215,006	46,797,646

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Fair Value of Financial Instruments

3 Months Ended

Mar. 31, 2012

Fair Value of Financial Instruments

Fair Value of Financial Instruments

5.             Fair Value of Financial Instruments

The Company’s financial instruments include cash and cash equivalents, accounts receivable, accounts payable, accrued liabilities and long-term debt. The carrying value of cash and cash equivalents, accounts receivable, accounts payable and accrued liabilities approximates their fair value due to the short-term maturities of these assets and liabilities. The carrying amount of borrowings under the senior credit agreement approximates fair value because the interest rates adjust to market interest rates. The fair value of the 7.5% senior notes, based on a quoted market price and classified as level one in the fair value hierarchy, was $385,075,000 at March 31, 2012.

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Debt

3 Months Ended

Mar. 31, 2012

Debt

Debt

4.             Debt

Debt, in order of priority, consists of:

(in thousands)	March 31, 2012		December 31, 2011
Senior credit agreement:
Revolving credit facility	$	—	$	—
Term loan facilities	344,895		344,518
	344,895		344,518
7.5% senior notes	365,000		365,000
	709,895		709,518
Less current maturities	3,696		3,682
Long-term debt	$	706,199	$	705,836

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Pension Plans (Tables)

3 Months Ended

Mar. 31, 2012

Pension Plans

Schedule of components of net periodic benefit cost

	Three Months Ended
(in thousands)	March 31, 2012			April 2, 2011
Service cost	$	422		$	380
Interest cost	1,207			1,230
Expected return on plan assets	(215		)	(223		)
Amortization of prior service cost	(13		)	(13		)
Recognized net actuarial loss	119			19
Net periodic benefit cost	$	1,520		$	1,393

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Segment Information

3 Months Ended

Mar. 31, 2012

Segment Information

Segment Information

12.          Segment Information

The Company’s operations are principally managed on a products basis and are comprised of three reportable segments for financial reporting purposes. The Company’s three reportable segments are presented in the context of its two primary businesses — energy storage and separations media.

The energy storage business produces and markets membranes that provide the critical function of separating the cathode and anode in a variety of battery markets and is comprised of the following reportable segments:

·Electronics and EDVs - produces and markets membranes for lithium-ion batteries that are used in portable electronic devices, cordless power tools and electric drive vehicles (“EDVs”).

·Transportation and industrial - produces and markets membranes for lead-acid batteries that are used in automobiles, other motor vehicles, forklifts and uninterruptible power supply systems.

The separations media business is one reportable segment and produces and markets membranes used as the high technology filtration element in various medical and industrial applications.

The Company evaluates the performance of segments and allocates resources to segments based on operating income before depreciation and amortization. In addition, it evaluates business segment performance before stock-based compensation and certain non-recurring and other costs.

Financial information relating to the reportable segments is presented below:

	Three Months Ended
(in thousands)	March 31, 2012			April 2, 2011
Net sales to external customers (by major product group):
Electronics and EDVs	$	42,388		$	42,144
Transportation and industrial	86,202			94,440
Energy storage	128,590			136,584
Healthcare	27,545			30,531
Filtration and specialty	17,570			18,559
Separations media	45,115			49,090
Total net sales to external customers	$	173,705		$	185,674
Operating income:
Electronics and EDVs	$	16,795		$	18,387
Transportation and industrial	20,014			25,771
Energy storage	36,809			44,158
Separations media	13,863			16,390
Corporate and other	(8,696		)	(10,375		)
Segment operating income	41,976			50,173
Stock-based compensation	4,270			1,035
Non-recurring and other costs	568			222
Total operating income	37,138			48,916
Reconciling items:
Interest expense, net	8,791			8,899
Foreign currency and other	451			1,598
Income before income taxes	$	27,896		$	38,419
Depreciation and amortization:
Electronics and EDVs	$	3,161		$	1,873
Transportation and industrial	2,901			2,932
Energy storage	6,062			4,805
Separations media	3,322			3,093
Corporate and other	4,148			4,185
Total depreciation and amortization	$	13,532		$	12,083

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Environmental Matters

3 Months Ended

Mar. 31, 2012

Environmental Matters

Environmental Matters

8.             Environmental Matters

Environmental obligations are accrued when such expenditures are probable and reasonably estimable. The amount of liability recorded is based on currently available information, including the progress of remedial investigations, current status of discussions with regulatory authorities regarding the method and extent of remediation, presently enacted laws and existing technology. Accruals for estimated losses from environmental obligations are adjusted as further information develops or circumstances change. Costs of future expenditures for environmental obligations are not discounted to their present value. The Company does not currently anticipate any material loss in excess of the amounts accrued. However, the Company’s future remediation expenses may be affected by a number of uncertainties including, but not limited to, the difficulty in estimating the extent and method of remediation, the evolving nature of environmental regulations and the availability and application of technology. The Company does not expect the resolution of such uncertainties to have a material adverse effect on its consolidated financial position or liquidity. Recoveries of environmental costs from other parties are recognized as assets when their receipt is deemed probable.

In connection with the acquisition of Membrana GmbH (“Membrana”) in 2002, the Company recorded a reserve for environmental obligations. The reserve provides for costs to remediate known environmental issues and operational upgrades which are required in order for the Company to remain in compliance with local regulations. The initial estimate and subsequent finalization of the reserve was included in the allocation of purchase price at the date of acquisition. The environmental reserve for the Membrana facility, which is denominated in euros, was $11,599,000 and $11,957,000 at March 31, 2012 and December 31, 2011, respectively. The Company anticipates the expenditures associated with the reserve will be made in the next twelve months. At March 31, 2012, the reserve was included in “Accrued liabilities” in the accompanying condensed consolidated balance sheets.

The Company has indemnification agreements for certain environmental matters from Acordis A.G. (“Acordis”) and Akzo Nobel N.V. (“Akzo”), the prior owners of Membrana. Akzo originally provided broad environmental protections to Acordis with the right to assign such indemnities to Acordis’s successors. Akzo’s indemnifications relate to conditions existing prior to December 1999, which is the date that Membrana was sold to Acordis. In addition to the Akzo indemnification, Acordis provides separate indemnification of claims incurred from December 1999 through February 2002, the acquisition date. The Company receives indemnification payments under the indemnification agreements after expenditures are made against approved claims. At March 31, 2012 and December 31, 2011, the amounts receivable under the indemnification agreements were $12,462,000 and $12,099,000, respectively. At March 31, 2012, the receivable under the indemnification agreements was included in “Prepaid and other” in the accompanying condensed consolidated balance sheets.

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Income Taxes

3 Months Ended

Mar. 31, 2012

Income Taxes

Income Taxes

6.             Income Taxes

The income tax provision for the interim periods presented is computed at the effective rate expected to be applicable in each respective full year using the statutory rates on a country-by-country basis. Income tax expense recorded in the financial statements differs from the federal statutory income tax rate due to a variety of factors, including state income taxes, the mix of income between U.S. and foreign jurisdictions taxed at varying rates and changes in estimates of permanent differences and valuation allowances.

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Pension Plans

3 Months Ended

Mar. 31, 2012

Pension Plans

Pension Plans

7.             Pension Plans

The Company and its subsidiaries sponsor multiple defined benefit pension plans based in subsidiaries located outside of the United States. The following table provides the components of net periodic benefit cost:

	Three Months Ended
(in thousands)	March 31, 2012			April 2, 2011
Service cost	$	422		$	380
Interest cost	1,207			1,230
Expected return on plan assets	(215		)	(223		)
Amortization of prior service cost	(13		)	(13		)
Recognized net actuarial loss	119			19
Net periodic benefit cost	$	1,520		$	1,393

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Government Grants

3 Months Ended

Mar. 31, 2012

Government Grants

Government Grants

9.             Government Grants

In 2010, the Company was awarded a $49,264,000 grant from the U.S. Department of Energy (“DOE”) to help fund an expansion of its U.S. lithium battery separator production capacity. As of March 31, 2012, the Company has recognized $48,479,000 from the DOE grant. The Company has also been awarded state and local grants in connection with certain of its U.S. expansions.

The Company recognized grant awards for capital expenditures of $1,910,000 and $6,416,000 for the three months ended March 31, 2012 and April 2, 2011, respectively. The Company recognized grant awards for expenses of $604,000 and $532,000 for the three months ended March 31, 2012 and April 2, 2011, respectively. At March 31, 2012 and December 31, 2011, amounts due from government agencies were $271,000 and $1,483,000, respectively.

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Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012 segment business	Apr. 02, 2011
Segment Information
Number of primary businesses	2
Financial information relating to the reportable segments
Number of reportable segments	3
Total net sales to external customers	$ 173,705	$ 185,674
Operating income (loss)	37,138	48,916
Interest expense, net	8,791	8,899
Foreign currency and other	451	1,598
Income (loss) before income taxes	27,896	38,419
Depreciation and amortization	13,532	12,083
Reportable segments
Financial information relating to the reportable segments
Total net sales to external customers	173,705	185,674
Operating income (loss)	41,976	50,173
Energy Storage
Financial information relating to the reportable segments
Total net sales to external customers	128,590	136,584
Operating income (loss)	36,809	44,158
Depreciation and amortization	6,062	4,805
Electronics and EDVs
Financial information relating to the reportable segments
Total net sales to external customers	42,388	42,144
Operating income (loss)	16,795	18,387
Depreciation and amortization	3,161	1,873
Transportation and industrial
Financial information relating to the reportable segments
Total net sales to external customers	86,202	94,440
Operating income (loss)	20,014	25,771
Depreciation and amortization	2,901	2,932
Separations Media
Financial information relating to the reportable segments
Number of reportable segments	1
Total net sales to external customers	45,115	49,090
Operating income (loss)	13,863	16,390
Depreciation and amortization	3,322	3,093
Healthcare
Financial information relating to the reportable segments
Total net sales to external customers	27,545	30,531
Filtration and specialty
Financial information relating to the reportable segments
Total net sales to external customers	17,570	18,559
Corporate and other
Financial information relating to the reportable segments
Operating income (loss)	(8,696)	(10,375)
Depreciation and amortization	4,148	4,185
Unallocated amount to segment
Financial information relating to the reportable segments
Stock-based compensation	4,270	1,035
Non-recurring and other costs	$ 568	$ 222

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Inventories (Tables)

3 Months Ended

Mar. 31, 2012

Inventories

Schedule of inventories

(in thousands)	March 31, 2012		December 31, 2011
Raw materials	$	38,218	$	35,423
Work-in-process	22,370		18,351
Finished goods	46,709		36,670
	$	107,297	$	90,444

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Inventories (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Inventories
Raw materials	$ 38,218	$ 35,423
Work-in-process	22,370	18,351
Finished goods	46,709	36,670
Inventories	$ 107,297	$ 90,444

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Condensed consolidated statements of comprehensive income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Apr. 02, 2011
Net income	$ 18,773	$ 25,681
Other comprehensive income (loss):
Foreign currency translation adjustment, net of income tax expense of $534 in 2012 and $1,558 in 2011	8,889	9,707
Change in net actuarial loss and prior service credit	(320)	(368)
Comprehensive income	$ 27,342	$ 35,020

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Inventories

3 Months Ended

Mar. 31, 2012

Inventories

Inventories

3.             Inventories

Inventories are carried at the lower of cost or market using the first-in, first-out method of accounting and consist of:

(in thousands)	March 31, 2012		December 31, 2011
Raw materials	$	38,218	$	35,423
Work-in-process	22,370		18,351
Finished goods	46,709		36,670
	$	107,297	$	90,444

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Debt (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Debt
Long-term debt including current maturities	$ 709,895	$ 709,518
Less current maturities	3,696	3,682
Long-term debt	706,199	705,836
Senior credit agreement
Debt
Long-term debt including current maturities	344,895	344,518
Term loan facilities
Debt
Long-term debt including current maturities	344,895	344,518
7.5% senior notes
Debt
Long-term debt including current maturities	$ 365,000	$ 365,000
Debt instrument, interest rate (as a percent)	7.50%	7.50%

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Financial Statements of Guarantors (Details 4) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Apr. 02, 2011
Operating activities:
Net cash provided by operating activities	$ 30,216	$ 38,080
Investing activities:
Purchases of property, plant and equipment, net	(45,350)	(29,677)
Net cash used in investing activities	(45,350)	(29,677)
Financing activities:
Principal payments on debt	(924)	(1,738)
Proceeds from stock option exercises	284	2,295
Other	(31)	(289)
Net cash provided by (used in) financing activities	(671)	268
Effect of exchange rate changes on cash and cash equivalents	2,187	4,241
Net increase (decrease) in cash and cash equivalents	(13,618)	12,912
Cash and cash equivalents at beginning of period	92,574	89,955
Cash and cash equivalents at end of period	78,956	102,867
Combined Guarantor Subsidiaries
Operating activities:
Net cash provided by operating activities	26,400	29,374
Investing activities:
Purchases of property, plant and equipment, net	(38,689)	(20,615)
Net cash used in investing activities	(38,689)	(20,615)
Financing activities:
Intercompany transactions, net	12,289	(8,759)
Net cash provided by (used in) financing activities	12,289	(8,759)
Combined Non-Guarantor Subsidiaries
Operating activities:
Net cash provided by operating activities	6,121	9,990
Investing activities:
Purchases of property, plant and equipment, net	(6,661)	(9,062)
Net cash used in investing activities	(6,661)	(9,062)
Financing activities:
Principal payments on debt	(117)	(123)
Intercompany transactions, net	8,774	6,854
Net cash provided by (used in) financing activities	8,657	6,731
Effect of exchange rate changes on cash and cash equivalents	2,187	4,241
Net increase (decrease) in cash and cash equivalents	10,304	11,900
Cash and cash equivalents at beginning of period	65,495	58,172
Cash and cash equivalents at end of period	75,799	70,072
The Company
Operating activities:
Net cash provided by operating activities	(2,565)	(2,466)
Financing activities:
Principal payments on debt	(807)	(1,615)
Proceeds from stock option exercises	284	2,295
Intercompany transactions, net	(20,803)	3,087
Other	(31)	(289)
Net cash provided by (used in) financing activities	(21,357)	3,478
Net increase (decrease) in cash and cash equivalents	(23,922)	1,012
Cash and cash equivalents at beginning of period	27,079	31,783
Cash and cash equivalents at end of period	3,157	32,795
Eliminations
Operating activities:
Net cash provided by operating activities	260	1,182
Financing activities:
Intercompany transactions, net	(260)	(1,182)
Net cash provided by (used in) financing activities	$ (260)	$ (1,182)

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Financial Statements of Guarantors

3 Months Ended

Mar. 31, 2012

Financial Statements of Guarantors

Financial Statements of Guarantors

13.          Financial Statements of Guarantors

The Company’s senior notes are unconditionally guaranteed, jointly and severally, on a senior basis by certain of the Company’s 100% owned subsidiaries (“Guarantors”). Management has determined that separate complete financial statements of the Guarantors would not be material to users of the financial statements.

The following sets forth condensed consolidating financial statements of the Guarantors and non-Guarantor subsidiaries.

Condensed consolidating balance sheet
March 31, 2012

(in thousands)	Combined Guarantor Subsidiaries		Combined Non-Guarantor Subsidiaries		The Company			Eliminations			Consolidated
Assets
Cash and cash equivalents	$	—	$	75,799	$	3,157		$	—		$	78,956
Accounts receivable, net	37,400		82,613		—			—			120,013
Inventories	37,147		70,150		—			—			107,297
Prepaid and other	5,090		21,481		31			—			26,602
Total current assets	79,637		250,043		3,188			—			332,868
Due from affiliates	482,640		297,887		410,018			(1,190,545		)	—
Investment in subsidiaries	167,329		321,035		607,432			(1,095,796		)	—
Property, plant and equipment, net	270,288		301,164		—			—			571,452
Goodwill	—		—		469,319			—			469,319
Intangibles and loan acquisition costs, net	—		—		129,198			—			129,198
Other	157		7,686		—			—			7,843
Total assets	$	1,000,051	$	1,177,815	$	1,619,155		$	(2,286,341	)	$	1,510,680
Liabilities and shareholders’ equity
Accounts payable and accrued liabilities	$	28,357	$	48,723	$	10,470		$	—		$	87,550
Income taxes payable	—		3,754		(413		)	—			3,341
Current portion of debt	—		467		3,229			—			3,696
Total current liabilities	28,357		52,944		13,286			—			94,587
Due to affiliates	506,909		271,395		412,241			(1,190,545		)	—
Debt, less current portion	—		44,002		662,197			—			706,199
Pension obligations, less current portion	—		81,493		—			—			81,493
Deferred income taxes and other	51,018		45,952		143			—			97,113
Shareholders’ equity	413,767		682,029		531,288			(1,095,796		)	531,288
Total liabilities and shareholders’ equity	$	1,000,051	$	1,177,815	$	1,619,155		$	(2,286,341	)	$	1,510,680

Condensed consolidating balance sheet
December 31, 2011

(in thousands)	Combined Guarantor Subsidiaries		Combined Non-Guarantor Subsidiaries		The Company		Eliminations			Consolidated
Assets
Cash and cash equivalents	$	—	$	65,495	$	27,079	$	—		$	92,574
Accounts receivable, net	51,831		82,185		—		—			134,016
Inventories	31,603		58,841		—		—			90,444
Prepaid and other	6,345		18,324		62		—			24,731
Total current assets	89,779		224,845		27,141		—			341,765
Due from affiliates	549,943		282,244		377,981		(1,210,168		)	—
Investment in subsidiaries	177,143		321,215		570,456		(1,068,814		)	—
Property, plant and equipment, net	235,051		292,727		—		—			527,778
Goodwill	—		—		469,319		—			469,319
Intangibles and loan acquisition costs, net	—		—		133,586		—			133,586
Other	157		9,274		—		—			9,431
Total assets	$	1,052,073	$	1,130,305	$	1,578,483	$	(2,278,982	)	$	1,481,879
Liabilities and shareholders’ equity
Accounts payable and accrued liabilities	$	41,301	$	51,391	$	3,547	$	—		$	96,239
Income taxes payable	—		5,231		650		—			5,881
Current portion of debt	—		453		3,229		—			3,682
Total current liabilities	41,301		57,075		7,426		—			105,802
Due to affiliates	554,230		247,424		408,514		(1,210,168		)	—
Debt, less current portion	—		42,832		663,004		—			705,836
Pension obligations, less current portion	—		78,086		—		—			78,086
Deferred income taxes and other	47,140		45,476		146		—			92,762
Shareholders’ equity	409,402		659,412		499,393		(1,068,814		)	499,393
Total liabilities and shareholders’ equity	$	1,052,073	$	1,130,305	$	1,578,483	$	(2,278,982	)	$	1,481,879

Condensed consolidating statement of income
For the three months ended March 31, 2012

(in thousands)	Combined Guarantor Subsidiaries			Combined Non-Guarantor Subsidiaries		The Company			Eliminations			Consolidated
Net sales	$	53,521		$	120,184	$	—		$	—		$	173,705
Cost of goods sold	17,412			85,269		—			—			102,681
Gross profit	36,109			34,915		—			—			71,024
Selling, general and administrative expenses	17,309			12,274		4,303			—			33,886
Operating income (loss)	18,800			22,641		(4,303		)	—			37,138
Interest expense and other	(2,584		)	2,797		9,029			—			9,242
Equity in earnings of subsidiaries	—			—		(28,663		)	28,663			—
Income before income taxes	21,384			19,844		15,331			(28,663		)	27,896
Income taxes	7,931			4,634		(3,442		)	—			9,123
Net income	$	13,453		$	15,210	$	18,773		$	(28,663	)	$	18,773

Condensed consolidating statement of income
For the three months ended April 2, 2011

(in thousands)	Combined Guarantor Subsidiaries			Combined Non-Guarantor Subsidiaries		The Company			Eliminations			Consolidated
Net sales	$	61,745		$	123,929	$	—		$	—		$	185,674
Cost of goods sold	19,390			86,818		—			—			106,208
Gross profit	42,355			37,111		—			—			79,466
Selling, general and administrative expenses	17,015			12,431		1,104			—			30,550
Operating income (loss)	25,340			24,680		(1,104		)	—			48,916
Interest expense and other	(837		)	2,505		8,829			—			10,497
Equity in earnings of subsidiaries	—			—		(33,515		)	33,515			—
Income before income taxes	26,177			22,175		23,582			(33,515		)	38,419
Income taxes	8,964			5,873		(2,099		)	—			12,738
Net income	$	17,213		$	16,302	$	25,681		$	(33,515	)	$	25,681

Condensed consolidating statement of comprehensive income

For the three months ended March 31, 2012

(in thousands)	Combined Guarantor Subsidiaries		Combined Non-Guarantor Subsidiaries			The Company			Eliminations			Consolidated
Net income	$	13,453	$	15,210		$	18,773		$	(28,663	)	$	18,773
Other comprehensive income (loss):
Foreign currency translation adjustment	—		8,302			(271		)	858			8,889
Change in net actuarial loss and prior service credit	—		(320		)	—			—			(320		)
Equity in earnings of subsidiaries	—		—			8,840			(8,840		)	—
Comprehensive income	$	13,453	$	23,192		$	27,342		$	(36,645	)	$	27,342

Condensed consolidating statement of comprehensive income

For the three months ended April 2, 2011

(in thousands)	Combined Guarantor Subsidiaries		Combined Non-Guarantor Subsidiaries			The Company			Eliminations			Consolidated
Net income	$	17,213	$	16,302		$	25,681		$	(33,515	)	$	25,681
Other comprehensive income (loss):
Foreign currency translation adjustment	—		12,374			(1,890		)	(777		)	9,707
Change in net actuarial loss and prior service credit	—		(368		)	—			—			(368		)
Equity in earnings of subsidiaries	—		—			11,229			(11,229		)	—
Comprehensive income	$	17,213	$	28,308		$	35,020		$	(45,521	)	$	35,020

Condensed consolidating statement of cash flows
For the three months ended March 31, 2012

(in thousands)	Combined Guarantor Subsidiaries			Combined Non-Guarantor Subsidiaries			The Company			Eliminations			Consolidated
Net cash provided by (used in) operating activities	$	26,400		$	6,121		$	(2,565	)	$	260		$	30,216
Investing activities:
Purchases of property, plant and equipment, net	(38,689		)	(6,661		)	—			—			(45,350		)
Net cash used in investing activities	(38,689		)	(6,661		)	—			—			(45,350		)
Financing activities:
Principal payments on debt	—			(117		)	(807		)	—			(924		)
Proceeds from stock option exercises	—			—			284			—			284
Intercompany transactions, net	12,289			8,774			(20,803		)	(260		)	—
Other	—			—			(31		)	—			(31		)
Net cash provided by (used in) financing activities	12,289			8,657			(21,357		)	(260		)	(671		)
Effect of exchange rate changes on cash and cash equivalents	—			2,187			—			—			2,187
Net increase (decrease) in cash and cash equivalents	—			10,304			(23,922		)	—			(13,618		)
Cash and cash equivalents at beginning of period	—			65,495			27,079			—			92,574
Cash and cash equivalents at end of period	$	—		$	75,799		$	3,157		$	—		$	78,956

Condensed consolidating statement of cash flows
For the three months ended April 2, 2011

(in thousands)	Combined Guarantor Subsidiaries			Combined Non-Guarantor Subsidiaries			The Company			Eliminations			Consolidated
Net cash provided by (used in) operating activities	$	29,374		$	9,990		$	(2,466	)	$	1,182		$	38,080
Investing activities:
Purchases of property, plant and equipment, net	(20,615		)	(9,062		)	—			—			(29,677		)
Net cash used in investing activities	(20,615		)	(9,062		)	—			—			(29,677		)
Financing activities:
Principal payments on debt	—			(123		)	(1,615		)	—			(1,738		)
Proceeds from stock option exercises	—			—			2,295			—			2,295
Intercompany transactions, net	(8,759		)	6,854			3,087			(1,182		)	—
Other	—			—			(289		)	—			(289		)
Net cash provided by (used in) financing activities	(8,759		)	6,731			3,478			(1,182		)	268
Effect of exchange rate changes on cash and cash equivalents	—			4,241			—			—			4,241
Net increase in cash and cash equivalents	—			11,900			1,012			—			12,912
Cash and cash equivalents at beginning of period	—			58,172			31,783			—			89,955
Cash and cash equivalents at end of period	$	—		$	70,072		$	32,795		$	—		$	102,867