Process and mold for producing padded seat backs, and the produc

Details Process and mold for producing padded seat backs, and the produc Process and mold for producing padded seat backs, and the produc

1979-07-05

1981-05-19

Anderson, Philip

Stock material or miscellaneous articles

Sheet including cover or casing

Foamed or expanded material encased

156 79, 249162, 264 466, 264 467, 264DIG83, 425415, 425817R, 428315, B32B 520, B29D 2700, A47C 740

Patent

active

042685575

ABSTRACT:
A process and mold for producing padded motor vehicle seat backs containing a metal framework surrounded by polyurethane foam in a plastic coating. The framework is inserted through a slit in the coating which is then sealed. Then the polyurethane foam is injected through a flexible filler neck into the coating and allowed to polymerize. After polymerization the filler neck is cut off. The framework may be contained in a plastic bag together with a relatively resilient foamed plastic body. The coating may be pressurized inwardly and pressure in the mold may be reduced during injection of the polyurethane foam. The mold comprises a pair of lateral mold parts and a central mold part together defining the mold cavity. The lateral mold parts are movable toward and away from the central mold part by hydraulic or pneumatic rams.

REFERENCES:
patent: 2944170 (1960-07-01), Knapp et al.
patent: 3153833 (1964-10-01), Jackson
patent: 3238287 (1966-03-01), Chapman
patent: 3246068 (1966-04-01), Ferreira
patent: 3485347 (1969-12-01), McGill et al.
patent: 3641725 (1972-02-01), Grisell
patent: 3830609 (1974-08-01), Heier
patent: 4115170 (1978-09-01), Sanson
patent: 4153657 (1979-05-01), Wilcox

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