Method for molding polyurethane seat paddings

Details Method for molding polyurethane seat paddings Method for molding polyurethane seat paddings

1990-12-07

1993-09-14

Kuhns, Allan R.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264 451, 264 466, 264275, 264278, B29C 6722

Patent

active

052446123

ABSTRACT:
A polyurethane seat padding having a center seat portion and a bank portion on either side thereof is molded by using a mold defining a cavity having a center region corresponding to the center seat portion and side regions corresponding to the bank portions, placing collecting vessels of expanded polypropylene or polyethylene in the side regions of the mold cavity, pouring a foaming polyurethane liquid for flexible foam into the cavity between the collecting vessels, pouring a foaming polyurethane liquid for rigid foam into the collecting vessels, and causing the foaming liquids to expand, thereby producing a polyurethane seat padding having the collecting vessels embedded therein.

REFERENCES:
patent: 3320339 (1967-05-01), Smith
patent: 3393258 (1968-07-01), Fultz et al.
patent: 3393259 (1968-07-01), Trogdon
patent: 3825647 (1974-07-01), Kirsch
patent: 3918863 (1975-11-01), Rhodes, Jr.
patent: 3971112 (1976-07-01), Amato et al.
patent: 4923746 (1990-05-01), Balmisse et al.
patent: 5061419 (1991-10-01), Kouda et al.

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