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

1993-12-01

1995-06-13

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, 425 4C, 425290, 425817C, B29C 4400, B26F 124

Patent

active

054240166

ABSTRACT:
Disclosed is a method for providing accelerated release of a flammable blowing agent from a plastic foam. The method comprises (a) providing the 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 structures and provide accelerated released of blowing agent.

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