SUPPORT BODY FOR PATCH OR PATCH PREPARATION, AND PATCH AND PATCH PREPARATION USING THE SAME

摘要

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 m to 15 m. 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.