| 摘要 |
PROBLEM TO BE SOLVED: To provide a self-adhesive sheet which has depression recovery property and also foreign matter capturing property compatibly. SOLUTION: The adhesive sheet is equipped with at least two layers, a layer A and a layer B. Each of the layers A and B is formed by cross-linking a self-adhesive composition containing a base polymer comprising one or more (meth)acrylate-based polymers, an acrylic-based monomer, and a cross-linking initiator. The layer A is provided with the depression recovery property that the depression recovers within ten seconds and the depression does not visible after removing the load in the test of the depression recovery. The layer B is provided with the foreign matter capturing property that the size (diameter) of an air bubble produced on the periphery of a glass bead is less than twice of the size (diameter) of the glass bead in the test of foreign matter capturing property for the layer B. COPYRIGHT: (C)2010,JPO&INPIT |
