| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an easily adhesive black polyester film for a solar battery, which is excellent in adhesiveness, and a back sheet using the same. <P>SOLUTION: An easily adhesive black polyester film for a solar battery comprises a coating layer at least on one side, in which a substrate thickness thereof is 20-300 μm. An optical density of the film is 1.0-5.0. The coating layer is composed mainly of urethane resin composed of aliphatic polycarbonate polyol. In an infrared spectrum of the coating layer, a ratio (A<SB POS="POST">1460</SB>/A<SB POS="POST">1530</SB>) of an absorbance (A<SB POS="POST">1460</SB>) around 1460 cm<SP POS="POST">-1</SP>derived from aliphatic polycarbonate to an absorbance (A<SB POS="POST">1530</SB>) around 1530 cm<SP POS="POST">-1</SP>derived from urethane is 0.70-1.60. <P>COPYRIGHT: (C)2012,JPO&INPIT |
