LAMINATED FILM, LAMINATED BODY AND METHOD FOR PRODUCING THE SAME, AND METHOD FOR PRODUCING FUEL CELL

摘要

PROBLEM TO BE SOLVED: To provide a laminated film which can form an ion exchange layer having uniform thickness on the surface of a release layer by coating, and can also improve releasability between the ion exchange layer and the release layer.SOLUTION: A laminated film is produced by combination of a release layer and a base material layer. The release layer is formed of a resin composition containing a cyclic olefin-based resin (A) and a polymethylpentene-based resin (B), and a weight ratio of the cyclic olefin-based resin (A) and the polymethylpentene-based resin (B) is former/latter=99.9/0.1 to 50/50. Arithmetic surface roughness Ra of the release layer may be 1 μm or less. The laminated film may have the total light transmittance of 70% or more and a haze of 30% or less. The release layer may be a layer formed by coating. The weight ratio of the cyclic olefin-based resin (A) and the polymethylpentene-based resin (B) is approximately former/latter=99.9/0.1 to 80/20.SELECTED DRAWING: None