| 摘要 |
PROBLEM TO BE SOLVED: To provide an emulsion type adhesive agent and an adhesive sheet imparted with the resistance to unsticking from difficultly adhesive surfaces such as polyolefin-based adherends, curved surfaces with small radii of curvature and embossed surfaces, without reducing repeelability. SOLUTION: The emulsion type adhesive agent contains an acrylic copolymer and two types of tackifier resin which are a rosin-based tackifier resin having 155-175°C softening temperature and a rosin-based tackifier resin having 95-130°C softening temperature. The adhesive sheet is constituted of the adhesive agent and exhibits good repeelability and excellent resistance to the unsticking when it is allowed to stand. COPYRIGHT: (C)2009,JPO&INPIT
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