PROBLEM TO BE SOLVED: To provide a patch or a patch preparation in which anchoring to a support body of an adhesive layer is improved without negatively affecting adhesive properties such as adherence, adhesiveness, and cohesiveness.SOLUTION: The support body of the present invention is a support body for a patch or patch preparation provided with a plastic film-containing substrate, and an undercoat agent layer layered on the substrate, wherein the undercoat agent layer contains porous inorganic particles having a mean particle size of 1 μm to 15 μm. This patch is provided with the support body and an adhesive layer arranged so as to be adjacent to the undercoat agent layer on one surface of the support body.COPYRIGHT: (C)2014,JPO&INPIT【課題】接着性、粘着性、凝集力などの粘着物性に悪影響を与えることなく、粘着剤層の支持体への投錨性を向上させた貼付剤または貼付製剤を提供すること。【解決手段】プラスチックフィルムを含む基材と、該基材上に積層された下塗り剤層とを備える貼付剤または貼付製剤用の支持体であって、該下塗り層が、平均粒子径が1μm~15μmである多孔質無機粒子を含む、支持体、および、該支持体と、該支持体の片面に該下塗り剤層と隣接するように配置された粘着剤層とを備える貼付剤。【選択図】図3
