| 摘要 |
PROBLEM TO BE SOLVED: To provide a film roll capable of preventing the occurrence of a black belt and depression during storage. SOLUTION: This film roll is constituted such that knurling is applied to a side end part to wind a film 1 around a winding core 2, a difference in thickness in the direction of width of the film 1 is 5μm or less except in a knurling part, and a thickness of the knurling is 3 to 15μm.
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