Toray Industries, Inc.

Takashi Arai

Kusato Hirota

Yasushi Tateishi

Saori Sumi

Takashi Sato

Hiroyuki Uebayashi

Takao Amioka

Masayoshi Teranishi

Michiko Minomo

Shunsuke Kameda

Ayuko Nakajima

Masakazu Noguchi

Wataru Okutsu

A back sheet for a photovoltaic module includes a single substrate film and a layer C, the layer C contains an acrylic resin as a major component, the substrate film including a layer A and a layer B, wherein the layer A contains a polyester resin as a major component, contains a white pigment in an amount of 5.0% by mass to 25% by mass, has a thickness of 5 &#x3bc;m or more, and is disposed on another surface of the back sheet, and the layer B contains a polyester resin as a major component, contains a white pigment in an amount of 1.0% by mass to less than 5.0% by mass based on the total amount of the layer B, and has a thickness accounting for 70% or more of the total thickness of the back sheet. The layer C may be made of a composition of an acrylic resin having a reactive functional group, a protected isocyanate compound, and an unprotected isocyanate compound.

Solar cell back sheet and solar cell module

A gas barrier film is provided comprising a base film of polyester provided, on at least one of its surfaces, with a deposited layer of an inorganic compound and a gas barrier layer of a copolymer resin composition formed on the former. The gas barrier layer is produced from a mixture of a base material composed at least of the two components of (a) an unsaturated nitrile that accounts for 10% to 30% by mass of the copolymer and (b) an unsaturated compound with a hydroxyl group that accounts for 30% to 70% by mass of the copolymer; (c) a curing agent that contains a compound with an isocyanate group; and (d) a compound that has either two or more carboxylic acid groups or one or more carboxylic anhydride groups.

Gas barrier film

The present invention relates to a gas barrier film where a polyurethane resin layer and an inorganic layer are disposed in this order from a polyester resin film side on at least one surface of a polyester resin film, wherein the polyurethane resin constituting said polyurethane resin layer is a resin containing a skeleton represented by the following formula (1) and/or the following formula (2). The present invention provides a gas barrier film having excellent oxygen insulation and water vapor insulation. 

The present invention relates to a gas barrier film where a polyurethane type resin layer and an inorganic layer are disposed in this order from a polyester type resin film side on at least one surface of a polyester type resin film, wherein the polyurethane type resin constituting said polyurethane type resin layer is a resin containing a skeleton represented by the following formula (1) and/or the following formula (2). 

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Otsu, Japan

Takashi Arai