| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a double-side coated film which can suppress increase in a haze even after subjected to processes such as a prolonged heat treatment, a sputtering process under a high tension and a durability test in a high temperature and high humidity environment, and which shows excellent optical characteristics and visibility even after the film is processed into an optical member.SOLUTION: The double-side coated film comprises: a polyester film having a film thickness of 10 to 80μm and having a layered structure of at least three layers, in which a polyester layer having a thickness of 4μm or more as the outermost surface layers has a softening point higher than a softening point of other layers; a coating layer on one surface of the polyester film; and an active energy ray-curable resin layer containing a binder polymer having an acrylate structure on the opposite surface. The double-side coated film exhibits at most 0.4% change rate of a haze before and after a heat treatment (at 180°C for 90 minutes), and simultaneously satisfies expressions (1):0<Ti≤20 and (2):0≤P≤300, where Ti represents an amount of Ti element (ppm) and P represents an amount of phosphorus (ppm) in the polyester film.</p> |
