Apparatus, method, and coating die for producing long fiber-reinforced thermoplastic resin composition

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United States of America Patent

PATENT NO 5718858
SERIAL NO

08596347

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Abstract

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Apparatus and methods are provided for producing a long fiber-reinforced thermoplastic resin compositions by initially loosening a continuous fiber bundle by a fiber loosening device so as to form a moving web-like continuous fiber bundle. At least one side of the moving web-like continuous fiber bundle which passes through the die is coated with a thermoplastic resin melt extruded through a slit disposed in the die by an extruder. The slit has substantially the same width as that of the web-like continuous fiber bundle to provide an even supply of the resin melt in the width direction of the web-like continuous fiber bundle. However, the slit has a spacing which changes at a point in the widthwise direction of the web-like continuous fiber bundle so as to be increased as the point is more remote from a feed port and have a constant spacing in the flowing direction of the thermoplastic resin melt. The web-like continuous fiber bundle is thus impregnated with the resin melt by an impregnating device having a path which has a rough surface. The thus impregnated web-like continuous fiber bundle may then be shaped to form a final product.

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Patent Owner(s)

Patent OwnerAddress
POLYPLASTICS CO LTD2-18-1 KONAN MINATO-KU TOKYO 1088280 ?1088280

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Amaike, Takeshi Fuji, JP 9 181
Hiragohri, Motohito Fuji, JP 1 2
Murakami, Haruji Fuji, JP 16 401
Shirai, Yoshimitsu Shizuoka, JP 7 120

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