PRESSURE-SENSITIVE ADHESIVE SHEET FOR APPLICATION TO VEHICLE COATING FILM

摘要

A pressure-sensitive adhesive sheet for application to vehicle coating films which have a surface modifier present on the surface thereof. The sheet is characterized in that the adhesive layer to come into contact with a vehicle coating film is an acrylic pressure-sensitive adhesive layer (Y) formed by polymerizing an acrylic pressure-sensitive adhesive composition by irradiation with actinic energy rays, the composition comprising (a) one or more vinyl monomers comprising an alkyl (meth)acrylate (a1) having a C2-14 alkyl group as a major component or a product obtained by partly polymerizing the monomers, (b) an actinic-energy-ray polymerization initiator, (c) a polyfunctional (meth)acrylate, and (d) a (meth)acrylic ester oligomer having a weight-average molecular weight of 1,000-30,000 and containing 1-50 parts by weight of a rosin-modified (meth)acrylate (d1) per 100 parts by weight of all monomer ingredients. The pressure-sensitive adhesive sheet has excellent adhesion even to an automotive coating film having a surface regulator on the surface thereof, without being reduced in bonding strength by the surface modifier.