Patent ID: 7678959

Claim:
An adhesive skin patch, which comprises a film base material and a pressure-sensitive adhesive layer disposed on one side of the film base material, wherein the film base comprises an elastomer film unevenly having a plurality of unevenness on at least one surface thereof, wherein, in one unevenness in which the distance perpendicular to the surface of the elastomer film between the top of the unevenness and the bottom thereof is the longest among the plurality of unevenness, the distance is within the range of from 1 to 5 μm; in another unevenness in which the distance perpendicular to the surface of the elastomer film between the top of the unevenness and the bottom thereof is the shortest among the plurality of unevenness, the distance is within the range of from 0.1 to 0.9 μm; and the surface of the elastomer film has a 10 -point average roughness within the range of from 0.5 μm to 3 μm.