Method of manufacturing a foamed protective and decorative moldi

Details Method of manufacturing a foamed protective and decorative moldi Method of manufacturing a foamed protective and decorative moldi

1982-09-28

1984-07-10

Anderson, Philip E.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264 453, 264 455, 264 464, 264 467, 264 54, 264DIG64, 425812, 425817R, B29D 2700

Patent

active

044592493

ABSTRACT:
A method of manufacturing a protective and decorative molding for an automobile, comprising the steps of: adding a foaming agent to a starting resinous material comprising a vinyl chloride polymer or copolymer or a blend thereof; kneading the foaming agent and the starting resinous material; successively forming the kneaded mixture into an elongated rod or sheet blank by means of extruder or calender rolls; shearing the rod or blank into pieces having a predetermined shape; and molding the piece in a mold having high-frequency heating electrodes to apply a high-frequency voltage to the piece so that the foaming agent contained in the piece decomposes and foams to provide a product having a predetermined shape.

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