POLYESTER FILM FOR OPTICS, HARD-COATED FILM AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a transparent polyester film having high RIGIDITY by bleading a filler, and to provide a hard-coated film having sufficient hardness. SOLUTION: This polyester film for optics contains 1-20 wt.% particles having 1-500 nm average primary particle diameter, by dispersing the particles in a feedstock solution when polymerizing the polyester, and has 20-1000 μm thickness. A hard-coat layer is formed on the polyester film for the optics.