HEAT-PEELABLE ADHESIVE TAPE

摘要

PPROBLEM TO BE SOLVED: To provide a heat-peelable adhesive tape excellent in bonding force toward a rough surface, which is also disappeared by heating and easily peeled off from a bonded material in a way of peeling off by itself. PSOLUTION: This heat peelable adhesive tape installed with an adhesive layer containing a heat-expandable material on a substrate film is provided by having 0.4 to 1.5 loss tangent (tan ) at 23C obtained by a dynamic viscoelasticity measurement of the adhesive layer and 0.6 loss tangent at a temperature of initiating its heat expansion. Also, a both sided adhesive tape obtained by installing the adhesive layer at the reverse side of the surface installed with the heat-peelable adhesive layer is also provided. Further, the heat-peelable adhesive tape has 1.0x10SP4/SPto 4.0x10SP5/SPPa storage elastic modulus (G') from 23C to the temperature of initiating the heat expansion obtained by the dynamic viscoelasticity measurement of the adhesive layer. PCOPYRIGHT: (C)2008,JPO&INPIT