| 摘要 |
PROBLEM TO BE SOLVED: To provide an adhesive film showing less blocking of the adhesive films with each other, especially showing less blocking even after storing the adhesive film as a rolled state, excellent in processing aptitude, and hardly foaming even after pasted with a material to be pasted and treating at a high temperature. SOLUTION: This adhesive film of a polypropylene-based film is characterized by consisting of a laminate material obtained by laminating an adhesive layer on the one side surface of a substrate layer consisting of the polypropylene-based resin and a releasing layer on a reverse surface, and having the ≤0.200 μm mean surface roughness SRa of surface of the releasing layer, the ≤0.030 μm mean surface roughness SRa of the surface of the adhesive layer and a ≥90% and ≤100% contacting area with a material to be adhered as defined in the specification. COPYRIGHT: (C)2010,JPO&INPIT
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