Method of molding frps

Details Method of molding frps Method of molding frps

B - Operations, Transporting

29

C

18/911

B29C 43/20 (2006.01) B29C 37/00 (2006.01) B29C 43/14 (2006.01) B29C 70/46 (2006.01)

Patent

CA 1273769

Abstract Of The Disclosure A FRP part is made by compression molding under heat and pressure a glass fiber reinforced thermosetting resin composition at an initial high pressure for a short period of time and then substantially reducing the pressure for a longer period of time to form an almost cured FRP part at which time there is applied to the exterior or outer surface of the FRP part an in-mold coating composition and heat and pressure are continued to cure the in-mold coating composition and to complete the cure of the FRP part. During the molding process the temperature gradient across, or the temperature non-uniformities of, the molding or working surfaces of the mold halves is less than about 5°C.

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