Item 7.01. Regulation FD Disclosure.

Polypore International, Inc. ("Polypore" or the "Company") will host an investor meeting and tours of its Charlotte, NC and Concord, NC production facilities beginning at 7:30 A.M. today, Wednesday, September 12, 2012. Polypore will provide a live webcast of the management presentations, which will address the Company's strategy, competitive position and core technology competencies, and will make the slides accompanying all of the sessions, including presentations addressing membrane process and product technology as well as lithium battery technology, available through the Investor Relations section of its website at www.polypore.net. A replay of the investor day webcast will be available for 90 days. A copy of the slide presentations from the investor day is furnished as Exhibit 99.1 to this Current Report on Form 8-K.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits.

Exhibit No. Description

99.1 Polypore International, Inc. Investor Day 2012

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