| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a thermally strippable double-faced pressure-sensitive adhesive sheet that, in the working of the back side of a workpiece while having its one face stuck to the front side of the workpiece and having its other face stuck to a support as a pedestal, can avoid floating of the support and cracking of the workpiece at working attributed thereto even when the workpiece has a highly uneven surface. <P>SOLUTION: The thermally strippable double-faced pressur-sensitive adhesive sheet is one having a thermally strippable adhesive layer A superimposed on one side face of a base material and a pressure-sensitive adhesive layer B superimposed on the other side face of the base material, and characterized in that the base material is a porous base material. The porous base material is preferably one having density of 0.9 g/cm<SP>3</SP>or below and a tensile elastic modulus of 20 MPa or below. The base material may consist of a laminate of a porous base material and a nonporous base material. As an adhesive for constructing the pressure-sensitive adhesive layer (B), use can be made of, for example, a pressure-sensitive adhesive, an ultraviolet hardening adhesive, a thermally strippable adhesive, a thermoplastic adhesive, a thermosetting adhesive, etc. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
