Reactive injection molding process for manufacturing a two-color

Details Reactive injection molding process for manufacturing a two-color Reactive injection molding process for manufacturing a two-color

1996-12-10

2000-12-05

Silbaugn, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

264102, 264139, 264161, 264245, 264255, 264 464, 264 466, B29C 4516, B29C 6720

Patent

active

061562572

ABSTRACT:
A polyurethane material is injected into a mold cavity having a reduced pressure to form e.g. the surface portion of a polyurethane covering for a steering wheel. A polyurethane material for forming a substantial inner portion thereof and free of any coloring matter is, then, injected into the cavity. Then, a polyurethane material containing coloring matter is injected into the cavity to form the remaining inner portion of the covering.

REFERENCES:
patent: 3883629 (1975-05-01), Garner et al.
patent: 4389454 (1983-06-01), Horacek et al.
patent: 4738157 (1988-04-01), Nishijima et al.
patent: 5223193 (1993-06-01), Bianchin et al.
patent: 5536458 (1996-07-01), Kawakita et al.
patent: 5589202 (1996-12-01), Okano et al.

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