Plastic and nonmetallic article shaping or treating: processes – Forming articles by uniting randomly associated particles – Stratified or layered articles
Patent
1992-06-29
1993-11-30
Theisen, Mary Lynn
Plastic and nonmetallic article shaping or treating: processes
Forming articles by uniting randomly associated particles
Stratified or layered articles
264245, 264255, B29C 3912, B32B 700
Patent
active
052662535
ABSTRACT:
The present invention relates to a method of manufacturing molded polymer articles comprised of casting resins and having color-differentiated surface regions, wherein prior to the charging of the casting resin, a surface region of the molding implement is coated with a hardenable coating of a colorant-containing composition, producing color-differentiation in the surface of the molded articles. The designated surface regions of the molding implement are coated with at least two layers, whereby, according to the present method, the first coating step applies a filler-containing coating dispersion (L-1) without added colorant, and the second coating step applies a colorant-containing coating (L-2) without filler. Thereafter, the coating layers are dried, the casting resin is charged to the molding implement, the resin is polymerized by heating, and the molded articles removed from the mold.
REFERENCES:
patent: 1454939 (1923-05-01), Michaelson
patent: 4244993 (1981-01-01), Platka, III et al.
patent: 4405551 (1983-09-01), Barnard et al.
patent: 5087405 (1992-02-01), Maker
Dijkhuizen Okko K.
Ittmann Guenther
Krieg Manfred
Bowic B.V.
Roehm GmbH Chemische Fabrik
Theisen Mary Lynn
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