Patent ID: 8354153

Claim:
A pressure-sensitive adhesive sheet with a release liner, comprising a pressure-sensitive adhesive sheet comprising a substrate and a pressure-sensitive adhesive layer retained by the substrate, and a release liner placed on the pressure-sensitive adhesive layer, wherein: the release liner has a laminate configuration comprising at least (i) a face layer A to constitute a surface on the pressure-sensitive adhesive layer side and (ii) a support layer B to support the face layer A, the face layer A is formed of a polypropylene resin composition containing no or at most 0.01 mass % of a phosphorous-based antioxidant, which polypropylene resin composition comprises a mixture of a propylene-based polymer and an ethylene-based polymer, the amount of the ethylene-based polymer relative to 100 parts by mass of propylene-based polymer is 5 to 20 parts by mass, the propylene-based polymer is homopropylene and the ethylene-based polymer is low density polyethylene, the face layer A is treated with an addition-curable silicone-based release agent containing a platinum catalyst, the support layer B is formed of paper or a polyethylene-phthalate-based resin, the surface on the pressure-sensitive adhesive layer side is divided into a plurality of sections by a plurality of ridges of 5 μm to 50 μm in height extending across the surface, with at least one of the sections inscribing a circle of a diameter greater than 500 μm, and the release liner has an average linear expansion coefficient of at most 3.4×10 −5 /° C. between 25° C. and 40° C.