December 17, 2004 - San Jose, California – Portola Packaging, Inc. will report its results for the first quarter ended November 30, 2004 in a press release to be issued on December 21, 2004.

In addition, Executive Management will hold a conference call to discuss first quarter financial results. Details of the call are as follows:

Date of the call: December 22, 2004
Time of the call: 10:00 AM Pacific Time
U.S. Dial In Number: 877-209-0397
International Dial In Number: 612-332-0923

A replay of the call will be available beginning on December 26, 2004 at 3:15 PM Pacific time and ending on January 26, 2005 at 11:59 AM. Pacific time. Dial in numbers for the replay are:

U.S.: 800-475-6701
International: 320-365-3844
Access Code: 763024