| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical laminated polyester film which reduces the rise of film haze even after a process under severe conditions, such as heat treatment for a long time under the condition of 150°C, a sputtering process under highly tensioned conditions, and a durability test in a high-temperature and high-humidity atmosphere, has less interference unevenness caused by outside light reflection when laminating various surface function layers such as a hard coat, and excels in optical characteristics and visibility even after machined as a product for an optical member.SOLUTION: A laminated polyester film with a thickness of 45-200 μm has a laminated structure of at least three layers with both outermost layers having a thickness of 4 μm or more and comprising at least 80 wt.% polyester with an ester ring trimer content of 0.5 wt.% or less, and has a coated layer formed of a coating liquid containing polyester resin and titanium oxide particles, on at least one side of the laminated polyester film. |
