Patent ID: 7344667

Claim:
A process for producing a prepreg, comprising air-blowing a heated and molten thermoplastic resin onto a continuous reinforcing fiber bundle (A), in which the reinforcing fibers are aligned in one direction, to laminate the continuous reinforcing fiber bundle (A) with an air-permeable layer (B) comprising the thermoplastic resin; wherein said reinforcing fibers are selected from the group consisting of glass fibers, carbon fibers, metal fibers, aromatic polyamide fibers, polyaramide fibers, alumina fibers, silicon carbide fibers, boron fibers and combinations thereof; and further wherein, when the continuous reinforcing fiber bundle (A) and the thermoplastic resin (B) are laminated, spreading the reinforcing fiber bundle A before laminating to the layer (B) comprising the thermoplastic resin, wherein a spreading ratio of the reinforcing fiber bundle (A) is 2.0 or more.