| 摘要 |
PURPOSE: To obtain a resin molded product high in strength, rigidity and impact resistance, in a screw plasticizing and melting resin molded pellets constituted of a compsn. consisting of long fibers and a thermoplastic resin, by preventing the generation of the shearing cutting of the fiber reinforcing material in the thermoplastic resin. CONSTITUTION: In a plasticizing screw 10 for plasticizing and melting a long fiber reinforced thermoplastic resin, the screw 10 is formed only from a tapered compression part 21 and the weighing part 22 extended therefrom and a compression ratio is set to 1.0-2.5 less than a conventional one to reduce the cutting of the fibers in the resin by shearing force. |
