Method of molding skin-covered foamed plastic article

Details Method of molding skin-covered foamed plastic article Method of molding skin-covered foamed plastic article

1988-12-13

1990-05-08

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264 403, 264 464, B29C 6722

Patent

active

049236539

ABSTRACT:
A method of molding a skin-covered foamed plastic article, which includes by steps putting a bag-shaped outer skin member into a cavity of a lower mold, the skin member including an outer layer and a porous inner layer lined on the outer layer; putting a first upper mold on said lower mold to close the cavity; fastening the lower and first upper molds together with a first fastening force; pouring a foamable plastic material into the bag-shaped outer skin member in the cavity and curing the same; removing the first upper mold from the lower mold after the material is hardened to a certain degree; putting a second upper mold on the lower mold to define a given space therebetween; fastening the lower and second upper molds together with a second fastening force which is greater than the first fastening force; and pouring the foamable plastic material into the given space and curing the same.

REFERENCES:
patent: 3161436 (1964-12-01), Hood
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patent: 3534129 (1970-10-01), Bartel
patent: 3929948 (1975-12-01), Welch et al.
patent: 4025372 (1977-05-01), Fenton
patent: 4060280 (1977-11-01), Van Loo
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patent: 4208368 (1980-01-01), Egli
patent: 4377609 (1983-03-01), Bartoli et al.
patent: 4405681 (1983-09-01), McEvoy
patent: 4544126 (1985-10-01), Melchert

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