Title:
LAMINATED POLYESTER FILM AS PROTECTIVE MATERIAL FOR REAR SURFACE OF SOLAR CELL
Document Type and Number:
WIPO Patent Application WO/2011/135985
Kind Code:
A1
Abstract:
Provided is a laminated polyester film as a protective material for the rear surface of a solar cell, which has excellent resistance to hydrolysis, and excellent adhesion to a solar cell encapsulating resin. The laminated polyester film as a protective material for the rear surface of a solar cell is a laminated polyester film having the polyester (A) layer below in at least one of the outermost layers, and contains the polyester (B) layer below in at least one of the layers. The amount of terminal carboxyl groups in the laminated polyester film is not more than 26 eq/ton. The laminated polyester film has a coating layer formed on at least one surface of the polyester (A) layer from a polyurethane having a polycarbonate skeleton and/or a polyether skeleton, and a crosslinking agent.
・ Polyester (A) layer: a layer comprising a polyester having an aromatic polyester as the main constituent, and containing less than 8 wt% of white pigment
・ Polyester (B) layer: a layer comprising a polyester having an aromatic polyester as the main constituent, and containing at least 8 wt% of white pigment
Inventors:
MASUDA, Narihiro (MITSUBISHI PLASTICS INC., 347, Santo-cho Inokuchi, Maibara-sh, Shiga 34, 〒5210234, JP)
増田成裕 (〒34 滋賀県米原市山東町井之口３４７番地三菱樹脂株式会社ポリエステルフィルム開発センター内 Shiga, 〒5210234, JP)
NOZAWA, Koutarou (MITSUBISHI PLASTICS INC., 347, Santo-cho Inokuchi, Maibara-sh, Shiga 34, 〒5210234, JP)
増田成裕 (〒34 滋賀県米原市山東町井之口３４７番地三菱樹脂株式会社ポリエステルフィルム開発センター内 Shiga, 〒5210234, JP)
NOZAWA, Koutarou (MITSUBISHI PLASTICS INC., 347, Santo-cho Inokuchi, Maibara-sh, Shiga 34, 〒5210234, JP)
Application Number:
JP2011/058641
Publication Date:
November 03, 2011
Filing Date:
April 05, 2011
Export Citation:
Assignee:
MITSUBISHI PLASTICS, INC. (2-2 Nihonbashihongoku-cho 1-chome, Chuo-ku Tokyo, 21, 〒1030021, JP)
三菱樹脂株式会社 (〒21 東京都中央区日本橋本石町一丁目２番２号 Tokyo, 〒1030021, JP)
MASUDA, Narihiro (MITSUBISHI PLASTICS INC., 347, Santo-cho Inokuchi, Maibara-sh, Shiga 34, 〒5210234, JP)
増田成裕 (〒34 滋賀県米原市山東町井之口３４７番地三菱樹脂株式会社ポリエステルフィルム開発センター内 Shiga, 〒5210234, JP)
三菱樹脂株式会社 (〒21 東京都中央区日本橋本石町一丁目２番２号 Tokyo, 〒1030021, JP)
MASUDA, Narihiro (MITSUBISHI PLASTICS INC., 347, Santo-cho Inokuchi, Maibara-sh, Shiga 34, 〒5210234, JP)
増田成裕 (〒34 滋賀県米原市山東町井之口３４７番地三菱樹脂株式会社ポリエステルフィルム開発センター内 Shiga, 〒5210234, JP)
International Classes:
H01L31/042; B32B27/36; B32B27/40; C08J7/04
Attorney, Agent or Firm:
OKADA, Kazuhiko (Okada & Associates, 6F Kudan Kangyo Bldg., 10-1, Kudankita 1-chome, Chiyoda-k, Tokyo 73, 〒1020073, JP)
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Claims: