PRESSURE-SENSITIVE ADHESIVE SHEET AND OPTICAL MEMBER

摘要

A pressure-sensitive adhesive sheet having a supporting film, a pressure-sensitive adhesive layer formed from a pressure-sensitive adhesive composition on one surface of the supporting film, and a top coat layer on the other surface opposite to the surface having the pressure-sensitive adhesive layer of the supporting film, wherein the top coat layer contains wax as a lubricant and a polyester resin as a binder and having the properties as defined.

主权项

1. A pressure-sensitive adhesive sheet having a supporting film, a pressure-sensitive adhesive layer formed from a pressure-sensitive adhesive composition on one surface of the supporting film, and a top coat layer on the other surface opposite to the surface having the pressure-sensitive adhesive layer of the supporting film, wherein
the top coat layer contains wax as a lubricant and a polyester resin as a binder; a rear surface adhesive strength (A) at a peel rate of 0.3 m/min after Cellotape (registered trade name) is bonded to the surface of the top coat layer at 23° C. for 30 minutes is 4.0 N/24 mm or higher; an adhesive strength (B) to a polarizing plate at a peel rate of 0.3 m/min after the pressure-sensitive adhesive surface of the pressure-sensitive adhesive layer is bonded to a TAC surface of a polarizing plate at 23° C. for 30 minutes is 0.1 N/25 mm or lower; and a shift length after a creep test carried out at 23° C. for 30 minutes by bonding the adhesion surface area of 200 mm2 of the pressure-sensitive adhesive layer to a TAC polarizing plate and applying a shearing load of 500 g is 2.5 mm or shorter.