CARBON FIBER NON-WOVEN PREPREG, METHOD FOR MANUFACTURING THE SAME, AND CARBON FIBER-REINFORCED RESIN MOLDED BODY USING THE SAME

To provide a carbon fiber nonwoven fabric prepreg that can be used in the same way as a prepreg containing continuous carbon fibers and has good handling properties, a method for manufacturing the same, and a fiber-reinforced resin molded body using the same.SOLUTION: There are provided a carbon fiber nonwoven fabric sheet containing discontinuous carbon fibers and a carbon fiber nonwoven fabric prepreg containing resin. The carbon fiber nonwoven fabric sheet is formed by laminating two or more rectangular fiber webs in which fibers are oriented, and the resin is integrated with the carbon fiber nonwoven fabric sheet. The prepreg is made by opening fibers, including discontinuous carbon fibers, in a carding machine, orienting the fibers in substantially one direction to make a fiber web, laminating the fiber web to make a laminated web, cutting both ends to make a carbon fiber nonwoven fabric sheet 15, and impregnating it with the resin or sandwiching it between resin sheets 18a and 18b.SELECTED DRAWING: Figure 4 【課題】連続炭素繊維を含むプリプレグと同様な使い方ができ、取り扱い性も良好な炭素繊維不織布プリプレグ、その製造方法及びこれを用いた繊維強化樹脂成形体を提供する。【解決手段】不連続炭素繊維を含む炭素繊維不織布シートと、樹脂を含む炭素繊維不織布プリプレグであって、前記炭素繊維不織布シートは、繊維が配向された矩形の繊維ウェブが、２枚以上積層されており、前記炭素繊維不織布シートには、樹脂が一体化される。このプリプレグは、不連続炭素繊維を含む繊維をカード機で開繊し、実質的に一方向に繊維を配向させて繊維ウェブとし、繊維ウェブを積層させ積層ウェブとし、両端をカットして炭素繊維不織布シート１５とし、樹脂を含浸あるいは樹脂シート１８ａ，１８ｂで挟んで製造する。【選択図】図４