Method for producing polyethylene-based resin extruded foam sheet, polyethylene-based resin extruded foam sheet, and plate interleaf sheet using the same for glass sheets

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United States of America Patent

PATENT NO 10717840
APP PUB NO 20180066121A1
SERIAL NO

15559148

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Abstract

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Provided is a method for producing a polyethylene-based resin extruded foam sheet by extruding and foaming a foamable molten resin composition formed by kneading a mixture containing a low-density polyethylene, a physical blowing agent, and an antistatic agent, wherein the foam sheet has a thickness in a range of from 0.05 to 0.5 mm, and the antistatic agent is a polymeric antistatic agent having a melting point whose different from the melting point of the low-density polyethylene is in a range of from −10 to +10° C., and having a melt flow rate of 10 g/10 min or more. This method enables a novel polyethylene-based resin extruded foam sheet to be obtained that is of high quality such that formation of a small hole or a through-hole has been reduced or eliminated, and has both excellent strength and a shock-absorbing property despite a very small thickness even in medium- or long-term continuous production, and besides, exhibits a sufficient antistatic property, thus suitable as a glass plate interleaf sheet.

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Patent Owner(s)

Patent OwnerAddress
JSP CORPORATIONTOKYO 100-0005

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Aoki, Takeshi Tochigi, JP 270 2840
Nishimoto, Takashi Tochigi, JP 44 782

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