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AssigneeShin-Etsu Chemical Co., Ltd.
InventorsYuji Tokushige, Norio Nakamura, Yoichi Tanifuji, Shuhei Ueda
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The present invention provides polylactic compositions effecting an excellent mold releasability upon processing and significantly improved elongation at break and impact strength without affecting the transparency. Also provided is a shrink film which decomposes under the natural environment and has excellent transparency, flexibility, shrinkability and mold releasability upon processing by applying the polylactic acid composition to a shrink film. There is provided a biodegradable polymer composition comprising 100 parts by weight of polylactic acid and 5 to 70 parts by weight of EVA. Further, a biodegradable polymer composition is provided comprising the polymer composition with one or more additives selected from the group consisting of 0.05 to 5 parts by weight of a lubricant, 1 to 50 parts by weight of plasticizer, 0.5 to 5 parts by weight of thermal stabilizer and 0.05 to 5 parts by weight of mold releasing agent. These biodegradable polymer compositions are applied to shrink films.
A biodegradable polymer composition comprising a polylactic acid and an ethylene vinyl acetate copolymer having an ethylene content of 20 to 40% by weight and a vinyl acetate content of 60 to 80% by weight.
A biodegradable polymer composition comprising a polylactic acid, an ethylene vinyl acetate copolymer having an ethylene content of 20 to 40% by weight and a vinyl acetate content of 60 to 80% by weight, and one or more additives selected from the group consisting of a lubricant, a plasticizer, a thermal stabilizer and a mold release agent.
Dependencies are inferred from the claim text.