CPC B65H 18/28 (2013.01) [C09J 7/403 (2018.01); B32B 7/06 (2013.01); B32B 2307/538 (2013.01); C09J 2423/005 (2013.01); C09J 2463/00 (2013.01); C09J 2467/005 (2013.01); C09J 2467/006 (2013.01); C09J 2479/086 (2013.01); C09J 2483/00 (2013.01)] | 20 Claims |
1. A film roll comprising:
a first polymer film having a reactive compound layer on at least one surface and
a second polymer film having a rough surface with a surface roughness Ra of 0.1 μm or more and 5 μm or less on at least one side, the second polymer film having a modulus of elasticity of 300 MPa or more and 10 GPa or less,
wherein
the first polymer film and the second polymer film are co-wound in a state that the surface having the reactive compound layer of the first polymer film and the rough surface of the second film contact each other, and
a reactive compound forming the reactive compound layer is a silane coupling agent, an epoxy resin, a multifunctional acrylate, or a combination thereof.
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