| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a polyester film for the back protecting film of a solar cell capable of especially keeping strength over a long period of time while having excellent mechanical properties and heat resistance and having high durability capable of constructing a large-scaled solar cell generation system, and the back protecting film of the solar cell. <P>SOLUTION: The polyester film for the back protecting film of the solar cell contains 4-20 mol% of a 2,6-naphthalenediarboxylic acid component as the constituent of polyester with respect to all of dicarboxylic acids. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
