Extruder screw having paths within the screw, extruder, and extrusion method

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United States of America Patent

PATENT NO 11752682
APP PUB NO 20210154906A1
SERIAL NO

17166781

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Abstract

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An extruder screw includes a screw main body, conveyance portions, barrier portions, and paths. The raw materials, the conveyance of which is limited by the barrier portions, flow in from the entrance. The raw materials flowing in from the entrance flow through the paths in an opposite direction to a conveyance direction of the conveyance portions. The exit is opened in the outer circumferential surface of the screw main body at a position on an upstream side in the conveyance direction in the conveyance portions in which the entrance is opened.

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Patent Owner(s)

Patent OwnerAddress
SHIBAURA MACHINE CO LTDTOKYO

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fujii, Shigeyuki Numazu, JP 33 564
Kobayashi, Akiyoshi Fuji, JP 35 1049
Sameshima, Takafumi Mishima, JP 24 242
Shimizu, Hiroshi Tsukuba, JP 514 5554

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