MULTILAYERED MOLD RELEASE FILM

PROBLEM TO BE SOLVED: To provide a multilayered mold release film excellent in mold releasability and shape followability, preventing the leaching-out of an adhesive from the end part of an overlay and not contaminating a press hot plate, the overlay, FPC and the copper terminal of FPC. SOLUTION: The multilayered mold release film is constituted by integrally laminating surface layers on both sides of an intermediate layer. The intermediate layer is composed of a resin composition which contains 10 wt.% or above of boiling heptane soluble atactic polypropylene, 70-99.9 wt.% of a polypropylene resin with a fusion peak temperature of 150°C or above and a calorie of fusion of 20-100 J/g containing isotactic polypropylene and 0.1-30 wt.% of a vinyl aromatic elastomer, wherein one of the surface layers is composed of a block copolymer containing a crystalline aromatic polyester as a block constituent unit and/or the crystalline aromatic polyester. COPYRIGHT: (C)2008,JPO&INPIT