本文へリンク

Heat-peelable pressure-sensitive adhesive sheet for cutting laminated ceramic sheet and method for cut-processing laminated ceramic sheet

Patent Number

Patent No.8524361

Abstract

The invention relates to a heat-peelable pressure-sensitive adhesive sheet for cutting a laminated ceramic sheet, which is used for temporary fixing at cutting of the laminated ceramic sheet, the heat-peelable pressure-sensitive adhesive sheet including a base material and, formed on at least one surface of the base material, a heat-expandable pressure-sensitive adhesive layer containing a pressure-sensitive adhesive and a foaming agent, in which the heat-expandable pressure-sensitive adhesive layer has a gel fraction of 50% by weight or more, and the heat-expandable pressure-sensitive adhesive layer has a glass transition temperature of −40° C. to 30° C.

Claim 1

1. A heat-peelable pressure-sensitive adhesive sheet for cutting a laminated ceramic sheet, which is used for temporary fixing at cutting of the laminated ceramic sheet,
the heat-peelable pressure-sensitive adhesive sheet comprising a base material and, formed on at least one surface of the base material, a heat-expandable pressure-sensitive adhesive layer containing a pressure-sensitive adhesive for imparting pressure-sensitive adhesiveness and a heat-expandability imparting foaming agent,
wherein the heat-expandable pressure-sensitive adhesive layer has a gel fraction of 50% by weight or more, and wherein the heat-expandable pressure-sensitive adhesive layer has a glass transition temperature of −40° C. to 30° C.