PRESSURE-SENSITIVE ADHESIVE SHEET AND METHOD FOR PRODUCTION THEREOF

摘要

A pressure-sensitive adhesive sheet, which comprises a substrate (11) and a pressure-sensitive adhesive layer (12), and further comprises through holes (2) which have been formed by a laser abrasion processing of a sheet comprising the substrate (11) and the adhesive layer (12) in a hole density of 30 to 50,000 pieces/100 cm<2> and have a hole diameter of 0.1 to 120 mum in the substrate and in the pressure-sensitive adhesive layer and that of 0.1 to 40 mum on the surface of the substrate (11). In the above pressure-sensitive adhesive sheet, an air trap and a blister can be prevented or removed due to through holes (2), and the appearance of the sheet is comparable to that of a sheet having no through holes.