METHOD OF FABRICATION OF A MULTI-DIRECTIONAL REINFORCING FIBER BASE FOR COMPOSITE MATERIALS

摘要

A reinforcing fibrous substrate for composite materials which has at least two fiber bundle layers comprising unidirectional reinforcing fiber bundles, characterized in that the direction of the reinforcing fiber bundles in one fiber bundle layer differs from that of the reinforcing fiber bundles in the adjacent fiber bundle layer, and a thermoplastic resin component is randomly and partially adhered to the surface of the reinforcing fiber bundles in at least one fiber bundle layer and the fiber bundle layers are bonded to each other with the thermoplastic resin component. The reinforcing fibrous substrate for composite materials of the present invention can be satisfactorily impregnated with a matrix resin, and is excellent in mechanical characteristics and good in formability. <IMAGE>