PREPARATION OF FIBER-REINFORCED THERMOPLASTIC RESIN MOLDED PIECES

摘要

PURPOSE:To obtain a long molded piece of irregular section efficiently by a method wherein preheated long fiber reinforced thermoplastic resin is passed between a pair of rolls having a space corresponding to the molded piece of desired section. CONSTITUTION:Reinforced fiber with a length 5mm. or longer such as carbon fiber and thermoplastic resin such as nylon 6 are put on each other to form fiber- reinforced thermoplastic resin composite material. The volume content of reinforced fiber in this composite material is preferred to be 5-70%. Such composite material is preheated in a heating furnace such as an induction furnace, etc. at the melting or softening point of the thermoplastic resin or higher and at the decomposing temperature thereof or lower and at the melting point of the reinforced fiber or lower. This preheated composite material is passed between a pair of rolls 1, 2 that are controlled at the melting or softening point of the thermoplastic resin or higher and have a space corresponding to the sectional contour of the mold 6 to provide the mold 6.