Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Composite article making
Patent
1986-11-05
1988-08-02
Anderson, Philip
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Composite article making
264 466, 264 468, 264101, 264267, 264338, 425127, 425817R, B29C 6722, B29C 3910
Patent
active
047612576
ABSTRACT:
A method and apparatus for foam molding packaging using a staged vacuum system to place a plastic sheet used as a release agent in conformity with the surface of the mold is provided. A mold having a complex image divides the mold image into separate and distinct sections. A plastic sheet is placed loosely over the mold in covering relation to the image and a vacuum is drawn on the surfaces of the separate and distinct sections of the mold image in a staged sequence to cause the plastic sheet to conform to the surfaces of the mold image on the mold.
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Anderson Philip
Sealed Air Corporation
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