Kneading method for fiber-reinforced thermoplastic resin, plasticizing device, and extruding machine

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United States of America Patent

PATENT NO 11992973
APP PUB NO 20210197420A1
SERIAL NO

16650784

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Abstract

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The present invention provides a kneading method for a fiber-reinforced thermoplastic resin with which dispersibility of reinforcement fibers is enhanced and sufficient reinforcement fibers having a proper fiber length remain, and a fiber-reinforced thermoplastic resin plasticizing device and an extruding machine for carrying out the method. The kneading method comprises supplying a thermoplastic resin and reinforcement fibers into a cylinder of a plasticizing device, and rotating a screw to obtain a fiber-reinforced thermoplastic resin, wherein the size of a clearance between the bore of the cylinder and the screw is made different between an upstream side in the vicinity of a reinforcement fiber loading port and a downstream side, so that the clearance becomes larger from the vicinity of the reinforcement fiber loading port toward the downstream side compared with the upstream side.

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Patent Owner(s)

Patent OwnerAddress
THE JAPAN STEEL WORKS LTDTOKYO 141-0032

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chiba, Hideki Hiroshima, JP 15 60
Fujita, Kazuki Hiroshima, JP 66 261
Fujita, Yasufumi Hiroshima, JP 3 12
Kunihiro, Daisuke Hiroshima, JP 5 1
Nishida, Shoso Hiroshima, JP 37 118
Sumihiro, Yukihiro Hiroshima, JP 2 42
Tsuji, Kazuya Hiroshima, JP 13 11
Yasue, Akira Hiroshima, JP 7 45

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