B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/689, 18/955
B29C 70/48 (2006.01) B29C 41/08 (2006.01) B29C 43/20 (2006.01) B29C 70/34 (2006.01)
Patent
CA 1162712
12,465-1 MOLDING PROCESS AND APPARATUS THEREFORE ABSTRACT OF THE DISCLOSURE This invention concerns a process for rapidly fabricating fiber reinforced thermoset resin articles. The fiber reinforcement is comprised of one or more fibers with a melting point or a glass transition temperature above about 130°C. The process comprises the steps of (a) providing one or more fibers with a melting point or a glass transition temperature above about 130°C in the form of an interlocked mass in a heatable matched metal die mold, (b) providing in an accumulator zone, a liquid body of a thermosettable organic material having a viscosity determined at 120°C, in the absence of curing agent therefore, of less than about 50 centipoise, and which is curable upon heating to a thermoset resin composition, the viscosity of said liquid body being maintained essentially constant in the accumulator zone by keeping its temperature below that which curing of said material is substantial, (c) closing the mold containing the web, (d) injecting at least a portion of said thermosettable organic material under pressure from said accumulator zone into the mold to thereby fill the cavity in said mold, (e) initiating the curing of said material in said mold by subjecting the material to a temperature above the temperature at which the curing of said material is initiated, by heating the mold, and (f) opening said mold and removing the cured thermoset article therefrom.
351022
Hopley William G.
Union Carbide Corporation
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