| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensively produceable polyester film having high reflectivity, and hardly causing breakage of the film. SOLUTION: The polyester film having pores obtained by using a resin incompatible with the polyester as nuclei in the inside, contains a thickener in the polyester film. The method for producing the polyester film is also provided. COPYRIGHT: (C)2008,JPO&INPIT
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