A medical tape preparation which comprises a support and, superposed on one side thereof in the following order, a pressure-sensitive adhesive layer and a release liner. The pressure-sensitive adhesive layer can contain a large amount of an oleophilic oily matter. The tape preparation is excellent in adhesion, cohesiveness, and stability even when no crosslinking agent is used. The pressure-sensitive adhesive layer in the medical tape preparation comprises a blend of two tacky polymers, which are a tacky polymer (A) comprising a copolymer obtained from 2-acetoacetoxyethyl methacrylate and other vinyl monomer(s) as constituent ingredients and a tacky polymer (B) comprising a copolymer which is obtained from a C 4-10 -alkyl (meth)acrylate and other vinyl monomer(s) as constituent ingredients and is different from the tacky polymer (A).提供於支持體的單面，依次層合黏著劑層及剝離襯墊之醫療用黏合帶劑，於該黏著劑層中，可含大量的親油性油狀物質，即使不使用交聯劑，仍具有優異的貼附性、凝聚性、安定性之醫療用黏合帶劑。作為本發明之醫療用黏合帶劑之黏著劑層係使用含以甲基丙烯酸2－乙醯乙酸基乙酯及其他乙烯基單體為構成成份之共聚物之黏著性聚合物A，及含以烷基之碳原子數為4個至10個之(甲基)丙烯酸烷基酯及其他乙烯基單體為構成成份，與上述黏著性聚合物A相異之共聚物之黏著性聚合物B之2種黏著性聚合物之混合物。
