Patent ID: 9011747
Filing Date: 2015-04-21
Classification: B29C

Abstract:
1. A method of manufacturing a fiber-reinforced plastic comprising: placing a compressible reinforcing fiber base material made of discontinuous reinforcing fibers in a cavity of a mold; injecting melted thermoplastic resin into said cavity; and impregnating the resin into said reinforcing fiber base material, wherein said mold is adapted to change a cavity volume of said mold, and said reinforcing fiber base material after having been or while being impregnated with said thermoplastic resin is compressed in said cavity by reducing said cavity volume of said mold after injecting said melted thermoplastic resin, and wherein, after placing said reinforcing fiber base material in said cavity of said mold and closing said mold, said cavity volume is reduced after said mold is opened by a resin pressure at which said melted thermoplastic resin is injected into said cavity.