| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyester film for surface protective films which combines excellent handlability and processability and a conductive film laminate.SOLUTION: A polyester film roll for surface protective films includes a polyester film which is 100-μm-or-greater thickness, meets expressions of (1) and (2) as to the relationship between shrinkage factors in the ME and TD directions of a film after heating at 150°C for 30 min at positions at every 100 mm interval in the TD direction of the film and has a length of 1,000 mm or greater in the direction orthogonal to the MD direction of the film. A laminate consists of the film stuck to a conductive film through an adhesive layer. Expression (1): |maximum value of the shrinkage factor in the MD direction-minimum value of the shrinkage factor in the TD direction|≤0.6%. Expression (2): |maximum value of the shrinkage factor in the TD direction-minimum value of the shrinkage factor in the MD direction|≤0.6%. |
