发明名称 加熱剥離型粘着シート
摘要 <p>When a heat-peelable adhesive sheet is used, there has been the case in which the heat-peelable adhesive sheet is wrongly used that is scheduled to be used differently according to a difference among workpieces, a difference among the steps, and the like. For this reason, it has been necessary to clearly check a usable heat-peelable adhesive sheet according to the differences among the workpieces or among the steps, so as not to cause such an error. In addition, when the heat-peelable adhesive sheet is transparent and colorless, it has been difficult to check whether the adhesive sheet has been accurately stuck on the workpiece. A heat-peelable adhesive sheet of which the tackiness agent layer is merely colored has had a possibility of polluting electronic components and giving damage to the electronic components, by the deposition of metal ions originating in the coloring agent onto a surface of the workpiece such as the electronic components. In order to solve these problems, a heat-peelable adhesive sheet is provided which includes a thermally expansive pressure-sensitive adhesive layer that contains thermally expansive microspheres and the coloring agent and that is provided on one side or both sides of the substrate, or a thermally expansive pressure-sensitive adhesive layer that contains thermally expansive microspheres and is provided on one side or both sides of the substrate through a colored intermediate layer, and which has a total light transmittance of 50% or more.</p>
申请公布号 JP5689336(B2) 申请公布日期 2015.03.25
申请号 JP20110046864 申请日期 2011.03.03
申请人 发明人
分类号 C09J7/02;C09J11/02;C09J11/08;C09J201/00 主分类号 C09J7/02
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