MEDICAL PATCH MATERIAL

Medical patch material comprises a laminate of a support and an adhesive layer, wherein the adhesive layer comprises an adhesive composition containing a copolymer in which a (meth)acrylic acid alkyl ester is the main component and a fatty acid ester compatible with the copolymer when the copolymer is liquid at room temperature, the fatty acid ester contained in the adhesive composition has a weight-average molecular weight of 350-550, the adhesive composition contains 5-25 parts by mass of the fatty acid ester with respect to 100 parts by mass of the copolymer, and the support has a moisture permeability of 500 g/m2*24 h or more. 一种医疗用贴附材料，其具备支撑体和粘合剂层构成的层叠体，所述粘合剂层由粘合剂组合物构成，所述粘合剂组合物含有以(甲基)丙烯酸烷基酯作为主要成分的共聚物、以及在室温下为液态且与所述共聚物相溶的脂肪酸酯，所述粘合剂组合物中含有的所述脂肪酸酯的重均分子量为350以上而550以下，所述粘合剂组合物相对于100质量份的所述共聚物含有5质量份以上而25质量份以下的所述脂肪酸酯，所述支撑体的透湿系数为500g/(m2·24h)以上。