Laminated molded article and its production method
AssigneeMitsui Chemicals, Inc.
InventorsHideo Sakai, Kojiro Motai, Satoru Kishi, Katsuyuki Morita, Nobuyuki Hosoyama, Hiroshi Tanabe
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Abstract
A hollow and cylindrical laminated molded product which is constituted by mutually overlapped joining of edge sides in a longitudinal direction of at least one or more elongated laminated articles formed by layered lamination of fiber-reinforced thermoplastic resin plates containing reinforcing fibers of not less than 30% and not more than 85% in volume content, and a method of producing the above-mentioned laminated molded product using a simple molding tool.
Claims11
A method for preparing a molded article comprising:
- providing a first prepreg comprised of a fiber-reinforced thermoplastic resin containing reinforcing fibers in an amount of not less than 30% and not more than 85% by weight in contact with part of a molding surface of a molding tool having a desired cross-sectional shape;
- providing a separate second prepreg comprised of a fiber-reinforced thermoplastic resin containing reinforcing fibers in an amount of not less than 30% and not more than 85% by weight in contact with two side edge portions of said first prepreg and part of the molding surface of said molding tool not covered by said first prepreg so as to form a shell surrounding said molding tool;
- molding said first and second fiber-reinforced thermoplastic resin prepregs at a temperature above the glass transition temperature of the thermoplastic resin of said first and second fiber-reinforced thermoplastic resin prepregs so that said first and second fiber-reinforced thermoplastic resin prepregs conform to the desired cross-sectional shape of said molding tool and so that the second fiber-reinforced thermoplastic resin prepreg is adhered to the side edge portions of the first fiber-reinforced thermoplastic resin prepreg to form a molded article, said side edge portions being sufficient so that the first and second fiber-reinforced thermoplastic resin prepregs can be adhered together so as to form the molded article in hollow form;
- and
- cooling said molded article.
A hollow molded article comprised of a first fiber-reinforced thermoplastic resin prepreg having side edge portions and containing reinforcing fibers in an amount of not less than 30% and not more than 85% by weight and a separate second fiber-reinforced thermoplastic resin prepreg having portions and containing reinforcing fibers in an amount of not less than 30% and not more than 85% by weight, said side edge portions of said first and second fiber-reinforced thermoplastic resin prepregs being overlapped and adhered by heat and pressure so as to form a hollow molded article having a desired cross-sectional shape.
Dependencies are inferred from the claim text.