PRESSURE-SENSITIVE ADHESIVE TAPE OR SHEET, AND RELEASING AGENT USING THEREFOR

摘要

PURPOSE:To obtain a pressure-sensitive adhesive tape or sheet having stable unwinding property after storing at a high temperature, by applying a releasing layer containing a copolymer of an ethylenic unsaturated compound, etc. to the back surface of the tape base or sheet base having a pressure-sensitive adhesive layer. CONSTITUTION:The surface of a tape base or a sheet base is coated with a pressure-sensitive adhesive layer optionally using a subbing agent. The objective tape or sheet can be manufactured by applying a releasing agent layer obtained by compounding (A) 100pts.(wt.) of a copolymer of (i) an ethylenic unsaturated compound having carboxyl group (e.g. maleic acid) and (ii) an ethylenic unsaturated compound free from carboxyl group (e.g. vinyl acetate) with (B) 5-45pts. of a long-chain-alkyl ethyleneurea and (C) 0.5-10pts. of a water-soluble polymer (e.g. PVA) to the reverse surface of the above base. EFFECT:Resistant to the migration of the releasing agent to the pressure-sensitive adhesive layer even by winding in the form of a roll. Free from cissing of the paint on the surface of the releasing layer. There is no run of the roll at low- temperature.