Method for providing accelerated release of a blowing agent from

Details Method for providing accelerated release of a blowing agent from Method for providing accelerated release of a blowing agent from

1995-04-25

1996-12-17

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Making hole or aperture in article

264 51, 264 52, 264DIG5, 264DIG13, 264DIG15, 425 4C, 425290, 425817C, B29C 4400, B26F 124

Patent

active

055850588

ABSTRACT:
Disclosed is a method for providing accelerated release of a blowing agent from a solid, non-perforated plastic foam. The method relates (a) providing the solid, non-perforated plastic foam having the blowing agent and a permeability modifier therein and (b) perforating the foam at its surface to form a multiplicity of channels extending from the surface into the foam. The channels are in gaseous communication with the environment outside the foam and provide accelerated release of blowing agent.

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