ADHESIVE TAPE FOR FIXING FLUORORESIN

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PROBLEM TO BE SOLVED : To provide an adhesive tape which shows a good adhesive strength to an adherend made of a fluororesin or a coating film formed from a fluororesin coating and exerts an excellent re-releasability at peeling. SOLUTION : From 3 to 25 ptws.wt. adhesion-imparting resin is compounded with 100 pts.wt. acrylic copolymer. The acrylic copolymer is prepared by copolymerizing an alkyl (meth)acrylate monomer comprising 80 wt.% alkyl (meth)acrylate having an 8-12C alkyl group and 0.1-6 wt.% unsaturated monomer having a functional group which is copolymerizable with the monomer. A crosslinking agent is added to the mixture, and the mixture is applied to a support and heated. The layer thickness of a crosslinked acrylic pressure-sensitive adhesive is 25-100 μm, provided that the layer thickness (μm) and the gel content fraction (%) satisfy the relation : 0.05×layer thickness≤gel fraction≤0.4×layer thickness.