Transparent thermoplastic resin pellet manufacturing method

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United States of America Patent

PATENT NO 9751990
SERIAL NO

14371102

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Abstract

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A method for producing a transparent thermoplastic resin pellet comprising a step of kneading a transparent thermoplastic resin with a kneader under a condition under which a damage history calculated according to the following formula is 500 to 2,500:

description='In-line Formulae' end='lead'Damage history={Residence time (tr)}×{Shear rate (γ)}description='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'Residence time (tr)=(W×H×L)/Q description='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'Shear rate (γ)=(π×D×N)/H description='In-line Formulae' end='tail'

in the formulae, W represents a screw groove width (pitch) [cm]; H represents a screw groove depth [cm]; L represents a screw length [cm]; Q represents a resin supply amount [g/s]; D represents a screw diameter [cm]; and N represents a screw rotation number [rps].

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Patent Owner(s)

Patent OwnerAddress
IDEMITSU KOSAN CO LTDNO 1 2-FAN YIDINGMU DAISAKU MACHI CHIYODA DISTRICT TOKYO JAPAN TOKYO TOKYO METROPOLIS

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chosa, Munehiro Ichihara, JP 9 39
Tanaka, Takayoshi Ichihara, JP 57 306
Yamazaki, Yasunobu Ichihara, JP 27 158

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