Method of molding two-color polyurethane parts by rim

Details Method of molding two-color polyurethane parts by rim Method of molding two-color polyurethane parts by rim

1994-12-16

1996-07-16

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264 469, 264102, 264245, 264246, 2643282, 2643288, 264DIG78, 264 455, 521 50, 521 51, B29C 4406

Patent

active

055364586

ABSTRACT:
It is object of the present invention to provide a method by which a variable property component, such as two-color parts, having the interior covered with a thin film of the surface area is molded from polyurethanes by RIM, eliminating the need for separately applying a mold release agent or colorants to the cavity surface. Greater latitude in design due to varying physical characteristics is provided.

REFERENCES:
patent: 4420570 (1983-12-01), Dominguez
patent: 5114637 (1992-05-01), Williams et al.
patent: 5300532 (1994-04-01), Takimoto et al.
patent: 5449698 (1995-09-01), Mabuchi et al.
patent: 5464582 (1995-11-01), Okano et al.
patent: 5476619 (1995-12-01), Nakamura et al.
Modern Plastics International, Apr. 15, 1985, No. 4, Lausanne, Switzerland, pp. 58-60.
Patent Abstracts of Japan, JP58201621, Nov. 24, 1983, page 1.

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