| 摘要 |
PROBLEM TO BE SOLVED: To provide a biaxially stretched film for a capacitor, having film surface roughness that can be appropriately controlled with a simple and easy method, and high in element workability.SOLUTION: A film for a capacitor is obtained by biaxial-stretching of a film including a 4-methyl-1-pentene copolymer (A) having a specific physical property, and has a 10 points average roughness (Rz) of 40 nm or more and 1,000 nm or less and a surface glossiness of 110-150%, on each surface thereof. The film surface roughness of the film for a capacitor can be appropriately controlled with a simple and easy method, so that the problem can be solved. |
