| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure-sensitive adhesive sheet (surface protective film) which has an appropriate adhesive force that prevents blisters or peeling with time, has excellent removability and workability, and has a topcoat layer excellent in resistance to whitening, and the like.SOLUTION: The pressure-sensitive adhesive sheet has a pressure-sensitive adhesive layer formed from a pressure-sensitive adhesive composition on one surface of a support film, in which the support film has a topcoat layer on a surface opposite to the surface having the pressure-sensitive adhesive layer. The adhesive sheet shows: a back face adhesive force (A) of 4.0 N/24 mm or more, when a prescribed piece of Cellotape(R) is stuck to the surface of the topcoat layer at 23°C for 30 minutes and then peeled from the surface at a peeling speed of 0.3 m/min; an adhesive force (B) to a polarizing plate of 0.1 N/25 mm or less, when the adhesive surface of the pressure-sensitive adhesive layer is stuck to a TAC (triacetyl cellulose) surface at 23°C for 30 minutes and then peeled therefrom at a peeling speed of 0.3 m/min; and a creep amount of 2.5 mm or less when the pressure-sensitive adhesive layer having an adhesion area of 200 mmis bonded to a TAC polarizing plate and subjected to a creep test at 23°C under a shear load of 500 g for 30 minutes. |
