Attached files

file filename
EXCEL - IDEA: XBRL DOCUMENT - PACKAGING CORP OF AMERICAFinancial_Report.xls
EX-31.2 - EX-31.2 - PACKAGING CORP OF AMERICAd309031dex312.htm
EX-32.2 - EX-32.2 - PACKAGING CORP OF AMERICAd309031dex322.htm
EX-31.1 - EX-31.1 - PACKAGING CORP OF AMERICAd309031dex311.htm
10-Q - 10-Q - PACKAGING CORP OF AMERICAd309031d10q.htm

Exhibit 32.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER

PURSUANT TO 18 U.S.C. §1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Mark W. Kowlzan, Chief Executive Officer of Packaging Corporation of America (the “Company”), certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

(1) The Quarterly Report of the Company on Form 10-Q for the period ended March 31, 2012 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 such Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

 

/s/ MARK W. KOWLZAN

Mark W. Kowlzan

Chief Executive Officer

Dated: May 8, 2012