MULTILAYER FILM, BACK SHEET FOR SOLAR CELL MODULE, AND SOLAR CELL MODULE
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United States of America Patent
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app pub date -
Oct 1, 2015
filing date -
Apr 2, 2013
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Abstract
Disclosed is a multilayer film including a polyester support body; a first adhesive layer laminated on at least one surface of the polyester support body; and a second adhesive layer laminated on a side opposite to the polyester support body through the first adhesive layer, in which an average film thickness of the polyester support body is in a range of 50 μm to 300 μm, the first adhesive layer includes a modified polyolefin resin which is a copolymer of ethylene, (meth)acrylic acid ester, and acid anhydride, the second adhesive layer includes an olefin resin, and a sum of average film thicknesses of the first adhesive layer and the second adhesive layer is in a range of 0.001 times to 0.3 times the average film thickness of the polyester support body. The multilayer film is a multilayer film in which an adhesive layer having both adhesiveness to EVA and adhesiveness to a polyester support body is included, curling of the multilayer film is suppressed, and blocking is suppressed.
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