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US 5,472,653 AGranted
Method for producing carbon fiber-reinforced plastic molding
AssigneeNippon Oil Co., Ltd.
InventorsHiroshi Onoda, Kenichi Aoyagi
Life of this patent
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Abstract
A method for producing a lightweight, highly rigid, highly strong and less thermally expansible, carbon fiber-reinforced plastic molding, which comprises using a rigid female mold and elastic male mold(s) in combination and applying an external pressure to at least the male mold(s).
Claims15
A method of producing a carbon fiber-reinforced plastic molding from a prepreg laminate which comprises the steps of
- a) inserting a carbon fiber-reinforced prepreg laminate in a cavity formed between a mold formed by a female mold and at least one male mold, said female mold being made of a rigid material and said male mold being made of an elastic material;
- b) wherein a gap being formed after said prepreg laminate is inserted in said cavity is sealed with a sealant;
- c) placing said mold in a pressure vessel whereby thermal expansion of said male mold causes pressure molding of said carbon fibers reinforced plastic molding and
- d) applying external pressure to said at least one male mold and said female mold, whereby internal pressure is also generated by the thermal expansion of said male mold.
1 more element
Dependencies are inferred from the claim text.