| 摘要 |
<p>A pressure sensitive adhesive sheet according to the present invention is a resin laminate, including a high thermally shrinkable base layer having relatively high thermal shrinkage ratio, having a ratio (A:B) of the thermal shrinkage ratio in a main shrinkage direction [A (%)] to the shrinkage ratio in a direction perpendicular to the main shrinkage direction [B (%)] of 1:1 to 10:1, and a low thermally shrinkable base layer having relatively low thermal shrinkage ratio, the high and low thermally shrinkable base layers bonded to each other via a self-adhesive layer, wherein the resin laminate bends toward the high thermally shrinkable base layer side when heated from any one direction and can automatically curl from one terminal unidirectionally to form a tubular roll by further heating. The pressure sensitive adhesive sheet can be separated from an adherend smoothly when heated from any one direction. Thus, it can be used, for example, as a pressure sensitive adhesive sheet for semiconductor wafer polishing.</p> |
