BACKSIDE PROTECTIVE FILM FOR SOLAR CELL, METHOD FOR PRODUCING SAME, AND SOLAR CELL MODULE
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United States of America Patent
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Issued Date -
Mar 14, 2013
app pub date -
Apr 19, 2011
filing date -
May 28, 2010
priority date (Note) -
Abandoned
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Abstract
Disclosed is a backside protective film (1) for a solar cell, which has a first resin layer (11) and a second resin layer (12) disposed on one surface side of the first resin layer (11). The first resin layer contains a rubber containing reinforced aromatic vinyl-based resin having a maximum glass transition temperature of 90-120° C. and an infrared transmissible coloring agent, and has a thickness of 10-400 μm. The second resin layer includes a saturated polyester resin and a white-based coloring agent, and has a thickness of 10-400 μm. The second resin layer has a dimension change ratio between before and after the film is left to stand still at a temperature of 135° C. for 30 minutes of ±0.5% or less.
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