Process for providing color contrast on surface of moulded artic

Details Process for providing color contrast on surface of moulded artic Process for providing color contrast on surface of moulded artic

1982-03-10

1983-09-20

Hoag, Willard E.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

264255, B29C 508, B29C 900, B29D 900

Patent

active

044055510

ABSTRACT:
A method of moulding a shaped article from a curable composition in which the composition is cured in a mould comprising at least two mould parts defining a cavity characterized in that prior to introducing the curable composition into the mould cavity, at least part of the surface forming the mould cavity is provided with a deposit of a material which provides a color contrast with the curable composition, the deposit being provided on areas of the mould which correspond to the areas on the cured moulding on which the color contrast is required to be reproduced, the deposit consisting of at least one finely divided pigment mixed with at least one finely divided filler. Preferably the weight ratio of filler to pigment is in the range 1:1 to 100:1, desirably 5:1 to 50:1. Sufficient deposit is applied to give the desired color contrast effect in the finished moulding.

REFERENCES:
patent: 2615271 (1952-10-01), Ulmer et al.
patent: 3463697 (1969-08-01), Findlay et al.
patent: 3504063 (1970-03-01), Lemelson
patent: 3607997 (1971-09-01), Linturn
patent: 3660547 (1972-05-01), Ruekberg
patent: 3949044 (1976-04-01), Varini
patent: 4252962 (1981-02-01), Stevenson
patent: 4364880 (1982-12-01), Howse

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