Notice of Future Press Release & Conference Call

October 31, 2005, Batavia, Illinois – Portola Packaging Inc. will report its results for the fourth quarter ended August 31, 2005 in a press release to be issued on November 17, 2005.

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

Date of the call: November 18, 2005
Time of the call: 10:00 AM Central Standard Time
U.S. Dial In Number: 888-428-4473
International Dial In Number: 612-332-0107

A replay of the call will be available beginning on November 18th at 3:15 PM Central time and ending on December 18th at 11:59 P.M. Central time. Dial in numbers for the replay are:

U.S.: 800-475-6701
International: 320-365-3844
Access Code: 801605

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