Screw, extruder and extrusion method

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12208556
APP PUB NO 20230075388A1
SERIAL NO

17759274

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Importance

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Abstract

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A screw has a spiral blade for extruding and kneading a high-silica plastic elastomer containing not less than 100 phr of silica. The screw has a first section located on the most downstream side in the extrusion direction and provided with a barrier extending between the adjacent spiral blade threads, while inclining with respect to the screw axial direction. The length of the barrier is 1.5 to 3.0 times the lead length of the spiral blade in the first section. The height of the barrier is 2 to 10 mm lower than the height of the spiral blade. The barrier thickness is 0.9 to 3.0 times the height difference between the spiral blade and barrier.

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Patent Owner(s)

Patent OwnerAddress
NAKATA ENGINEERING CO LTDKOBE-SHI HYOGO 651-2312

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Noda, Makoto Kobe, JP 77 554
Sato, Tadasuke Kobe, JP 3 3

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