Toray Industries, Inc.

Toray Advanced Film Co., Ltd.

Ryosuke Matsui

Masahiro Kimura

Kohzo Takahashi

Isao Manabe

Hiroyuki Tanaka

Minoru Yoshida

Masatoshi Ohkura

Tetsuya Machida

Saori Sumi

Koukichi Hashimoto

Norihide Inoue

Yosuke Takizawa

Natsuki Nakamichi

Kunimasa Tanaka

Naoko Tamura

A protective film is capable of protecting and preserving an optical sheet surface, particularly the back surface of a prism sheet, independent of the shape and composition thereof in a range of adhesive forces appropriate for various adherends. A layered film having an adhesive layer having a styrene-based elastomer as the main component thereof on at least one surface of a base material layer, the layered film characterized in that the loss tangent tan &#x3b4; and the shear storage modulus G' of the elastomer at 1 Hz in a temperature range of 30-60&#xb0; C. are within specific ranges.

Laminated film

A biaxially oriented polyester film is provided, in particular, a biaxially oriented polyester film for molded part capable of being used suitably as a metallic molded part processed after metal deposition on a film surface and a surface protection film in forming a decorative sheet. Provided is a biaxially oriented polyester film for molded part, which is a polyester film that at least two layers of A layer composed of polyester A and B layer composed of polyester B are laminated, wherein

Biaxially oriented polyester film for molded part

A biaxially oriented polyester film includes at least three polyester resin layers A1/B/A2, and has a melting point in the range of 246 to 270&#xb0; C. The major component of the layers A1 and A2 is polyethylene terephthalate and the stress at 100% elongation in the film's longitudinal direction and width direction at 150&#xb0; C. and 200&#xb0; C. meets the following equations: 2&#x2266;(F100+F100)&#x2266;100 and 1&#x2266;F100&#x2266;60. The film has a high dimensional stability at high temperatures to permit uniform metal deposition, suffers little change in appearance during thermoforming, and serves for easy production of formed parts that closely meet the shape of the die when subjected to low-stress forming.

Biaxially oriented polyester film and metallic laminated film

The biaxially oriented polyester film of the present invention contains a polyester having a primary melting point of 245 to 265&#xb0; C. as the main component and exhibits a drop bag strength index at 0&#xb0; C. of at least 2.0 and a strength at break in the film longitudinal direction at 120&#xb0; C. of at least 100 MPa. The film has superior heat resistance, mechanical strength, impact resistance, and bending resistance and is particularly suitable for packaging materials.

Biaxially oriented polyester film

In order to provide a polyester film having superior impact resistance and flex pinhole resistance, and further exhibiting superior gas barrier properties after a metal or metal oxide is deposited on the film, with the inherent characteristics of polyester film maintained, such as low hygroscopicity, dimensional stability, flatness, and transparency, the polyester film comprises a mixture of 70% to 97% by weight of polyester A mainly composed of a repeating unit comprising ethylene terephthalate and 3% to 30% by weight of polyester B mainly composed of a repeating unit comprising butylene terephthalate. The polyester film has a melting point in range of 245 to 270&#xb0; C. The polyester film may comprise a polyester resin containing 90% to 60% by weight of an ethylene terephthalate component, 10% to 40% by weight of a butylene terephthalate component, and 0.1% to 5% by weight of a polyoxyalkylene glycol component. The polyester film is suitably used for packaging and other applications.

Polyester film and gas-barrier polyester film

Biaxially-drawn polyester film for fabrication which is characterized in that it is a film comprising polyester in which ethylene terephthalate units and/or ethylene naphthalate units are the chief structural component, and the melting point of said film is 180-270&#xb0; C., the angle of contact to water is 70&#xb0;-120&#xb0;, and the planar orientation coefficient is 0.08-0.15. This film shows outstanding release properties following repeated use, use after fabrication and use in an aqueous environment and, furthermore, it exhibits stable properties with little variation and, in particular, following lamination to metal sheet such as steel or aluminium, when used as the inner face of a fabricated metal can, it is outstanding in its non-stick properties to the contents, and provides a combination of heat resistance and processability.

Biaxially-oriented polyester film for fabrication and method of producing the same

Biaxially-drawn polyester film for fabrication which is characterized in that it is a film comprising polyester in which ethylene terephthalate units and/or ethylene naphthalate units are the chief structural component and containing 0.1-2 wt % of a carnauba wax and 1 to 200 ppm of germanium, and the melting point of said film is 180-270&deg; C., the angle of contact to water is 70&deg;-120&deg;, and the planar orientation coefficient is 0.08-0.15. This film shows outstanding release properties following repeated use, use after fabrication and use in an aqueous environment and, furthermore, it exhibits stable properties with little variation and, in particular, following lamination to metal sheet such as steel or aluminium, when used as the inner face of a fabricated metal can, it is outstanding in its non-stick properties to the contents, and provides a combination of heat resistance and processability.

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Otsu, Japan

Ryosuke Matsui