| 摘要 |
<p>A multilayered 4-methyl-1-pentene copolymer film which is a laminate comprising layers (A) made of a 4-methyl-1-pentene copolymer and a layer (B) made of polypropylene or polyethylene and optionally further having one or more layers (C) made of an adhesive resin, the layers (A) being disposed respectively on both sides of the layer (B) optionally through the layers (C), the film having been monoaxially stretched at least 2 times or having been biaxially stretched at least 1.5 times in each of the machine and transverse directions. The multilayered film has satisfactory stretchability in production, has high rigidity, and has satisfactory releasability from blackened copper foils. It is suitable for use as a release film for MLB production.</p> |
