B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/1159
B29C 41/08 (2006.01) B29C 41/18 (2006.01) B29C 41/22 (2006.01) B29C 37/00 (2006.01)
Patent
CA 1316660
A METHOD FOR PRODUCING A MOLDED ARTICLE HAVING COLORED FEATURES Abstract of the Disclosure A method for manufacturing decorative features in situ in a base layer cast plastic material includes the steps of providing a mold tool having a surface thereon which is recessed in the form of a desired decorative feature and includes a sharp break line between the recess and the surrounding mold surface; depositing a covering of thermoplastic material in the recess surface and heating the tool to melt the thermoplastic material on the recess surface to form segments of plastic corresponding to the desired decorative feature; thereafter cooling the covering and stripping it from the mold by separating it at sharp break line interface between the deposited material on the recessed surface and a thin film membrane so as to retain segments of material deposited in the mold tool; reheating the mold tool to partially remelt the retained segments and thereafter depositing a base layer of thermoplastic material across the full surface of the mold and reheating the mold to bond the retained segments to the base layer and cooling and stripping the mold to form a finished plastic shell having a decorative feature formed in situ therein.
572148
Brault Alfred F.
Gray John D.
Brault Alfred F.
Davidson Textron Inc.
Gray John D.
Macrae & Co.
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