Method of forming a decorative panel of molded plastic

Details Method of forming a decorative panel of molded plastic Method of forming a decorative panel of molded plastic

1985-10-21

1987-04-14

Silbaugh, Jan

Metal working

Method of mechanical manufacture

Combined manufacture including applying or shaping of fluent...

29428, 264553, 264129, 264220, 264225, 264226, 264227, 264DIG78, B29C 5110, B29C 7100, B29C 3340

Patent

active

046567224

ABSTRACT:
An improved method of forming a decorative panel of molded plastic comprising the steps of constructing a form having a detailed masonry surface; covering the detailed surface with a mold release material; applying a thin layer of gel coat over the mold release; applying a plurality of layers of fiberglass matte and resin over the gel coat layer; allowing the plurality of fiberglass matte and resin layers to harden thereby forming a heat resistant mold having a female side being formed against the detailed surface and a side opposite from the female side; removing the mold from the form; perforating the mold thereby providing fluid communication between the two sides; connecting a vacuum apparatus to the side opposite of the mold; placing a sheet of high impact plastic above and adjacent the female side of the mold; activating a heater thereby heating the plastic sheet to a pliable state; activating the vacuum apparatus thereby drawing the plastic sheet into the female side of the mold; and removing the formed panel from the mold.

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patent: 3379812 (1968-04-01), Yakovou
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patent: 3751540 (1973-08-01), Prahl, Jr. et al.
patent: 3755031 (1973-08-01), Hoffman et al.
patent: 4001361 (1977-01-01), Unruh
patent: 4157885 (1979-06-01), Tippmann
patent: 4241554 (1980-12-01), Infantino
patent: 4275540 (1981-06-01), Keller

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