UNIDIRECTIONAL WOVEN FABRIC AND METHOD FOR PRODUCING THE SAME, AND FIBER-REINFORCED PLASTIC MOLDED ARTICLE USING THE UNIDIRECTIONAL WOVEN FABRIC AND MOLDING METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To form a woven fabric in which crimps of carbon fiber yarns arranged as warp yarns are reduced as compared to a conventional unidirectional carbon fiber woven fabric, and the straightness of the carbon fiber yarns is retained.SOLUTION: A woven fabric F is formed such that weft yarns have a fineness of 110-660 dtex and a weft yarn density is 1.2-3.9 yarns/cm. Both surfaces of the woven fabric F are heated at a temperature equal to or higher than the melting point of the weft yarns, and are compression-bonded so that the warp yarns are thermally fusion-bonded to each other. The compression bonding of both surfaces is performed by a pair of heating rollers 21 and 22 so as to provide an adhesive strength between the warp and weft yarns of 1.5 N or greater.