PURPOSE: To obtain a fiber reinforced resin molding which is equipped jointly with excellent sound absorbing characteristics and high rigidity, effective as a noise shield for an engine room or the like, and excellent in a recycling property by a method wherein a reinforcing fiber is made into a raised or inflatedly projected state on one side surface by using elastic restoring force which a glass fiber has.
CONSTITUTION: When fiber reinforced resin laminate molded product consisting of a reinforcing fiber and a thermoplastic resin matrix is manufactured, a first material layer A containing a thermoplastic resin (a) and a reinforcing fiber, and a second material layer B containing a thermoplastic resin (b) melting point of which is higher than that of the resin (a) or the resin (b) and a reinforcing fiber, are heated at a temperature higher than a melting point of the resin (b) under a state wherein they are laminated, and molded by pressurizing in a plasticized state. Then, a surface layer part on the first material layer A side is heated at a temperature lower than the melting point of the resin (b) and higher than the melting point of the resin (a) under a solidified by cooling state or a molten and semifluid state. Thereby, the surface of the first material layer A side is made into a raised or inflatedly projected state, and a deep part is made into a state wherein voids are generated among fibers.
YUMITORI SHUJI
YOKUMOTO TAKAO
OKUMURA TOSHIAKI
