PRODUCTION PROCESS OF PLANT FIBER COMPOSITE MATERIAL

PROBLEM TO BE SOLVED: To provide a production process of a plant fiber composite material better achievable of both light weight and higher mechanical characteristics. SOLUTION: The production process of the plant fiber composite material having a structure wherein plant fibers (kenaf fibers etc.) are bonded together via a thermoplastic resin (a polypropylene-based resin etc.) and containing 30-95 mass% of the plant fibers per 100 mass% of the total amount of the plant fibers and the thermoplastic resin, provided that the process includes following steps in that order; a spinning step for melt spinning the thermoplastic resin (the polypropylene-based resin) containing an acid-modified thermoplastic resin (a maleic anhydride-modified polypropylene etc.) to give thermoplastic resin fibers, a combining step for combining plant fibers (kenaf fibers etc.) with the thermoplastic resin fibers to give a fiber mixture, and a heating step for melting the thermoplastic resin fibers in the fiber mixture. COPYRIGHT: (C)2010,JPO&INPIT