Abstract: According to the present invention, of the both surfaces of a cleaning sheet, a contact face to be rubbed against a cleaning object is a concave convex plane containing a convex part 1 and a concave part 2. By rubbing this concave convex plane against a cleaning object, a removal target (e.g., paste accumulated on the back of screen printing plate) attached to a cleaning object can be effectively removed.

Abstract: A pressure-sensitive adhesive sheet for removing a solvent-containing substance contains a substrate and a pressure-sensitive adhesive layer formed on at least one side of the substrate, wherein a maximum value of a stress at the time when a cylindrical article (diameter of 20 mm, height of 25 mm) is compressed from one round opening side of cylindrical one at a compression rate of 10 mm/min under conditions of a temperature of 23±2° C. and a relative humidity of 50±5% is 0.8 N/25 mm or more, the cylindrical article being obtained by fixing the pressure-sensitive adhesive sheet for removing a solvent-containing substance (65.8 mm×25 mm) in a cylindrical state where edge parts thereof in the machine direction are overlapped each other in a width of 3 mm.

Abstract: The object of the invention is to provide a pressure-sensitive adhesive sheet for removal of fluorescent substances, which removes fluorescent substances on only the top surface of a barrier rib but does not remove fluorescent substances on the side of the barrier rib. The invention relates to a pressure-sensitive adhesive sheet used for removing fluorescent substances adhering to a barrier rib of a plasma display panel back substrate and having at least a pressure-sensitive adhesive layer on one side of a base material, wherein the thickness of the pressure-sensitive adhesive layer is more than 3 ?m and less than 20 ?m.

Abstract: The pressure-sensitive adhesive sheet for removal of a solvent-containing substance contains a substrate and a pressure-sensitive adhesive layer which is formed on at least one side of the substrate, wherein the pressure-sensitive adhesive layer is formed by a pressure-sensitive adhesive composition containing (A) an acrylic polymer containing carboxyl group, (B) an amine compound containing plural hydroxyl groups and (C) a polyisocyanate compound. In the pressure-sensitive adhesive composition containing the above-mentioned pressure-sensitive adhesive layer, it is preferred that rate of the amine compound (B) having plural hydroxyl groups and that of the polyisocyanate compound (C) to 100 parts by weight of the acrylic polymer containing carboxyl group (A) are 0.1 to 50 part(s) by weight and 5 to 50 parts by weight, respectively.