| 摘要 |
PURPOSE: To provide a thermally peeling type adhesive sheet which can ensure an effective contact surface, even when the contact-targeting area of an adherent is small, and can prevent the generation of adhesion troubles such as chip scattering. CONSTITUTION: This thermally peeling type adhesive sheet in which a thermally expandable adhesive layer containing thermally expandable fine spheres is disposed on at least one side of a substrate, characterized in that an average roughness on the central line of the surface of the thermally expandable adhesive layer is <= 0.4μm, before heated. The maximum roughness of the surface of the thermally expandable adhesive layer may be <= 5μm, before heated. The adhesive sheet may have a rubbery organic elastic layer between the substrate and the thermally expandable adhesive layer. |
