| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an easily bondable white polyester film for a solar cell excelling in adhesiveness, and to provide a back sheet using the easily bondable white polyester film. <P>SOLUTION: The white polyester film has a coating layer on at least one surface and has a base material thickness of 20-500 μm. The coating layer incldues, as a main component, a urethane resin containing aliphatic polycarbonate polyol as a component, and in measurement based on an infrared spectroscopy, a ratio of absorbance in the vicinity of 1,460 cm<SP>-1</SP>derived from an aliphatic polycarbonate component to that in the vicinity of 1,530 cm<SP>-1</SP>derived from a urethane component is 0.70-1.60. <P>COPYRIGHT: (C)2011,JPO&INPIT |
