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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May 20, 2014
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N/A
app pub date -
Apr 19, 2011
filing date -
May 7, 2010
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Abstract
Disclosed is a backside protective film (1) for a solar cell, which sequentially has a first resin layer (11), a second resin layer (12) and a third resin layer (13). Both the first resin layer and second resin layer include a rubber containing reinforced aromatic vinyl-based resin having a maximum glass transition temperature of 90-120° C. and have a thickness of 10-300 μm. The first resin layer includes an infrared transmissible coloring agent, while the second resin layer includes a white-based coloring agent. The third resin layer includes a saturated polyester resin and has a thickness of 10-300 μm. The third 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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