摘要 |
PURPOSE:To obtain a pressure-sensitive adhesive tape with improved anchoring properties, by providing a pressure-sensitive adhesive layer after priming a polyolefin sheet having an oxidation-treated surface with a specified crosslinkage copolymer, followed by irradiation with an ionizing radiation. CONSTITUTION:The surface of a sheet of polyolefin such as polyethylene or polypropylene is subjected to oxidation treatment such as corona discharge treatment. The treated surface is coated as a primer with an aq. dispersion contg. an alkyl (meth)acrylate-base crosslinkable copolymer such as a reaction product between butyl acrylate/acrylic acid copolymer and N-methylolacrylamide having at least one (meth)acryloyl group in the molecule and having film-forming ability, and dried. The purpose pressure-sensitive adhesive tape is obtd. by irradiation with an ionizing radiation such as electron beam or X ray after an emulsion-type pressure-sensitive adhesive layer is placed on the coated surface.
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