Toray Industries, Inc.

Hiroshi Shinnumadate

Masahiro Kimura

Sadanori Kumazawa

Jun Sakamoto

Masanori Sueoka

Taisei Matsumoto

Hirokado Nakamura

Go-hei Yamamura

Kokichi Hashimoto

Gouhei Yamamura

Masahiro c/o Shiga Plant Toray Industries Inc Kimura

Taisei c/o Shiga Plant Toray Industries Inc Matsumoto

Sadanori c/o Nagoya Plant Toray Industries Inc Kumazawa

Go-Hei Yamamura

A multilayer polyester film is characterized in that a polyester (B) layer mainly composed of a polyester (B) is arranged on at least one side of a polyester (A) layer mainly composed of a polyester (A). The multilayer polyester film is also characterized by having an elastic modulus of 20 to 1000 MPa in an atmosphere at 23&#xb0; C. and an elastic modulus of 10 to 200 MPa in an atmosphere at 120&#xb0; C., and having substantially no-orientation.

Multilayer polyester film

The laminate sheet of polylactic acid-based resin of the present invention is a laminate sheet comprising Layer A and Layer B consisting of polylactic acid-based resin composition and both of said Layer A and said Layer B contain a nucleating agent, and said Layer A and said Layer B contain said nucleating agent in a specific amount. The present invention makes it possible to obtain a thermoformed plastic excellent in heat resistance and transparency, and further, provides a laminate sheet of polylactic acid-based resin excellent in thermoformability.

Laminate sheet of polylactic acid-based resin and thermoformed plastic thereof

Provided is a polymer prepared by using a vegetable oil-derived component and favorably used as a polylactic acid resin-softening agent that is effective in softening the polylactic acid resin while preserving the transparency of the polylactic acid resin and simultaneously resistant to bleeding out (extraction) of itself from the polylactic acid resin. Also provided are a resin mixture of the resin composition and a polylactic acid resin as well as a film or sheet prepared by using the resin mixture. The polymer (C) according to the present invention has an epoxidized vegetable oil segment (A) and a polylactic acid segment (B). The resin mixture according to the present invention is a mixture of the polymer (C) and the polylactic acid resin (D) at a (C)/(D) ratio of 10/90 to 50/50 (weight ratio).

Polymer and a film or sheet containing the same

The polylactic acid-based resin laminate sheet is a laminate sheet including Layer A and Layer B of a polylactic acid-based resin composition, and the Layer A and the Layer B contain poly(meth)acrylate in a specified amount. The laminate sheet is excellent in transparency and heat resistance and, in addition, provides a polylactic acid-based resin laminate sheet capable of obtaining a molded product of high biobased content therefrom.

Polylactic acid-based resin laminate sheet and molded product therefrom

Poly(lactic acid) polymer compositions each contain an appropriate poly(lactic acid) polymer and a suitable plasticizer having a polyether and/or polyester segment in combination. The compositions exhibit satisfactory flexibility and show very small amount of the evaporation, migration and extraction (bleedout) of the plasticizer and losing transparency upon heating. The poly(lactic acid) polymer compositions are useful as formed plastics such as films.

Polylactic acid base polymer composition, molding thereof and film

Poly(lactic acid) polymer compositions each contain an appropriate poly(lactic acid) polymer and a suitable plasticizer having a polyether and/or polyester segment in combination. The composition exhibit satisfactory flexibility and show very small amount of the evaporation, migration and extraction (bleedout) of the plasticizer and losing transparency upon heating. The poly(lactic acid) polymer compositions are useful as formed plastics such as films.

Growing community of inventors

Otsu, Japan

Hiroshi Shinnumadate