Method of making composite foamed articles using fluid pressure

Details Method of making composite foamed articles using fluid pressure Method of making composite foamed articles using fluid pressure

1989-12-18

1991-02-12

Simmons, David A.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264 467, 264 468, 264510, B29C 6722

Patent

active

049922246

ABSTRACT:
The apparatus includes a first female mold member defining a mold cavity for receiving a plastic skin or layer. A second mold member or slide is positioned with a surface thereon contiguous with the surface of the mold cavity. The surface of the second mold member receives and holds thereon a portion of the plastisol skin extending from the mold cavity. A third mold member, such as a mold core, positions a rigid insert in the mold cavity with an insert surface or edge adjacent the portion of the plastisol skin on the second mold member. The second mold member includes passages for directing fluid pressure against the portion of skin thereon to fold it over the adjacent insert edge. A fourth mold member, such as a mold lid, is movable toward the second and third mold members for pressing the folded-over skin against the insert during foam formation between the skin and insert.

REFERENCES:
patent: 3933562 (1976-01-01), Cruckshank
patent: 4115170 (1978-09-01), Sanson
patent: 4336009 (1982-06-01), Wolf
patent: 4406848 (1983-09-01), Simpson
patent: 4420447 (1983-12-01), Nakashima
patent: 4501541 (1985-02-01), Bethell et al.
patent: 4544126 (1985-10-01), Melchert
patent: 4793784 (1988-12-01), Belleville et al.

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