Packaging Corporation of America

Lake Forest, Illinois, USA, 06 July 2006 --(BUSINESS WIRE)-- Packaging Corporation of America (NYSE:PKG), will hold a conference call on 19 July 2006 at 10:00 a.m. (Eastern Time) to discuss second quarter 2006 results. Second quarter 2006 earnings will be released after the market closes on 18 July 2006.

For access to the 19 July conference call, dial (866) 835-8825 (U.S. and Canada) and (703) 639-1407 (International) by 9:45 a.m. (Eastern Time). The conference call leader will be Paul Stecko.

A replay of the call will also be available from 1:00 p.m. (Eastern Time) on 19 July 2006 to 11:59 p.m. (Eastern Time) on 03 August 2006. To access the recording, dial (888) 266-2081 (U.S. and Canada) and (703) 925-2533 (International). The passcode is 933792.

This call will be webcast by CCBN and can be accessed at PCA's Web site at www.packagingcorp.com.

PCA is the sixth largest producer of containerboard and corrugated packaging products in the United States, with sales of USD 2.0 billion in 2005. PCA operates four paper mills and 69 corrugated product plants in 27 states across the country.