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
Patent
1988-11-04
1990-09-18
Woo, Jay H.
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
264258, B29C 4516, B29C 4320
Patent
active
049576844
ABSTRACT:
A method of producing glass fiber mat reinforced plastic panels having at least one smooth appearance surface in a set of two matched mold members having interior mold surfaces defining a mold cavity contained therein of which at least one interior surface is the mirror image of the appearance surface of the panel. The method includes the steps of placing at least one layer of glass fiber mat in a mold cavity, pouring a polymeric material into the cavity saturating the glass fiber mat, closing the two mold members together with at least one layer of a flexible sheeting material disposed over and adjacent to the interior mold surface opposing the interior mold surface producing the appearance surface of the panel, clamping the two mold members together, curing the polymeric material for a sufficient time into a hard plastic panel, and opening the matched mold members and demold a finished panel having at least one smooth appearance surface.
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Durkin, II Jeremiah
General Motors Corporation
Tung R. W.
Woo Jay H.
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