Extrusion dryer for rubbery polymer, drying method of rubbery polymer, and production method of rubbery polymer

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United States of America Patent

PATENT NO 11680112
SERIAL NO

16343616

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Abstract

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An extrusion dryer for a rubbery polymer includes a cylinder equipped with a hopper for injection of the rubbery polymer at one end and a die at the other end. A screw is rotatably arranged inside of the cylinder, the screw having a shaft and a spiral flight formed on an outer surface of the shaft. The shaft includes multiple zones, each including a conveyance section and a compression section. In the zone closest to the die, the outer diameter of the shaft at the conveyance section is smaller than the outer diameter at the compression section.

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Patent Owner(s)

Patent OwnerAddress
ZEON CORPORATION6-2 MARUNOUCHI 1-CHOME CHIYODA-KU TOKYO 1008246 ?1008246

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Imai, Junichi Tokyo, JP 43 248
Nakamura, Masao Tokyo, JP 128 1635
Sumiura, Kenichiro Tokyo, JP 4 0

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