| 摘要 |
PURPOSE: A base film is provided to generate no mixing of foam when a protection film which is made from it on a substrate and make an adhesive film smooth. CONSTITUTION: A base film is used in a protection film which is made by laminating adhesive layer on one side. The base film is a laminated film having at least 2 layers which is made of polyolefin resin respectively. Two layers consist of an utmost outer layer which laminates an adhesive layer and an utmost layer which does not laminates an adhesive layer. An average roughness(Ra) of the surface laminating an adhesive layer of a base film is below 0.25μm, and that of the surface which does not laminate adhesive layer of the base film. |
