SAN JOSE, CA—October 29, 2004 - Portola Packaging, Inc. today announced that it has extended its tender offer to purchase its common stock through January 15, 2005. This will defer acceptance of tenders through that date.

This press release will be available under the “in the news” section on the Company’s web site at: www.portpack.com.

ABOUT PORTOLA PACKAGING, INC:

Portola Packaging is a leading designer, manufacturer and marketer of tamper evident plastic closures used in dairy, fruit juice, bottled water, sports drinks, institutional food products and other non-carbonated beverage products. The Company also produces a wide variety of plastic bottles for use in the dairy, water and juice industries, including various high density bottles, as well as five-gallon polycarbonate water bottles. In addition, the Company designs, manufactures and markets capping equipment for use in high speed bottling, filling and packaging production lines. The Company is also engaged in the manufacture and sale of tooling and molds used in the blow molding industry. For more information about Portola Packaging, visit the Company’s web site at: www.portpack.com.

ABOUT PORTOLA TECH INTERNATIONAL:

Portola Tech International (“PTI”) is a leading manufacturer and marketer of plastic packaging components to the cosmetic, fragrance and toiletries industry. PTI’s capabilities include injection and compression molding, thermal and ultraviolet metallizing, ultraviolet one coat spray technologies, silk screening, hot stamping, lining and multiple component assembly. In addition to offering the largest stock line of closures in the industry, with over 450 styles and sizes, PTI has a complementary line of heavy wall PETG and polypropylene jars. For more information about PTI, visit PTI’s web site at www.portolatech.com.

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