| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a release film comprising polypropylene-based resin which has excellent releasability and almost the same heat resistance as that of a PET film and has sufficient stiffness even when formed into a thin film and a tensile elasticity of 2000 MPa or more.SOLUTION: There is provided a release film in which a polypropylene-based resin layer is laminated on at least one surface of a layer composed of a cyclic polyolefin-based resin. The cyclic polyolefin-based resin has a glass transition temperature of 100 to 160°C and the content of the cyclic polyolefin-based resin to the total amount of the release film is 30 to 90 wt%. In this case, the cyclic polyolefin-based resin preferably is a copolymer of norbornene and ethylene.</p> |
