| 摘要 |
PROBLEM TO BE SOLVED: To provide a laminated polyester film which has high transparency and excellent coating appearance.SOLUTION: A laminated polyester film has a coating layer formed of a coating liquid containing a polyester resin, a surfactant A and a surfactant B on at least one surface of a polyester film. A content of the polyester resin with respect to a solid content of the coating liquid is 60 mass% or more. The surfactant A has a structure represented by the following formula (1): RO-(CHCHO)n-(CHCH(CH)O)m-H. A content of the surfactant A with respect to the solid content of the coating liquid is 1-6 mass%. The surfactant B has a structure represented by the following formula (2): RO-(CHCHO)p-H . A total content of the surfactant A and the surfactant B with respect to the solid content of the coating liquid is 7-15 mass%. In the formula (1), Ris H or a hydrocarbon group having 1 to 20 carbon atoms, and n and m are positive integers. In the formula (2), Ris a hydrocarbon group having 5 to 20 carbon atoms, and p is a positive integer.SELECTED DRAWING: None |
