Process for preparation of fiber-reinforced thermoplastic molded articles including special reinforcement

A process for preparing a molded article of fiber-reinforced plastic using a plate material comprising a fibrous reinforcement material and a thermoplastic resin, said process comprising the steps of (i) setting-up a sheet prepreg either on the plate material, in a mold, or on the plate material and in a mold, in areas where the fibrous reinforcement would not follow the flow of the resin with substantial uniformity, or in areas where special reinforcement is required, wherein the sheet prepreg is obtained by impregnating a unidirectionally arranged fiber or woven cloth with a thermoplastic resin, and the fibrous reinforcement material in the plate material is from 30 to 70 wt. %, and (ii) maintaining the plate material above the flow temperature of the thermoplastic resin of the plate material and maintaining the sheet prepreg above the flow temperature of the thermoplastic resin of the sheet prepreg, and compressing them in the mold to integrally mold to obtain said molded article.