| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an optical laminated polyester film, which is a highly transparent film, which minimizes the increase of film haze, even after undergoing processes under severe conditions, such as long time heat treatment at 150°C, sputtering process under high tension, endurance test under high temperature/high humidity atmosphere, etc., and which is superior in optical quality/visibility even after fabricating the polyester film as a finished product for optical members. <P>SOLUTION: This laminated polyester film is 45 to 200μm thick and of a laminated structure formed of at least not less than 3 layers, both outermost layers of which are not less than 4μm thick. In addition, a coating layer which is formed from a coating solution containing a polymer containing quaternary ammonium salt, an acrylate polymer containing polyethylene glycol, and a crosslinking agent, is applied to one side of the laminated polyester film. Further, in the laminated polyester film, the quantity of oligomer extracted from the surface of the coating layer is not more than 0.5 mg/m<SP POS="POST">2</SP>. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
