Patent ID: 8388794

Claim:
A process for producing an adhesive patch, which comprises: a step of preparing a pressure-sensitive adhesive sheet comprising a backing, a pressure-sensitive adhesive layer formed on at least one side of the backing, and a release liner disposed on the pressure-sensitive adhesive layer; and a step of punching an adhesive patch comprising a backing, a pressure-sensitive adhesive layer formed on at least one side of the backing, and a release liner disposed on the pressure-sensitive adhesive layer out of the pressure-sensitive adhesive sheet with a protrudent push cutter blade, wherein, at at least an edge part of the protrudent push cutter blade, a cross-sectional shape of the protrudent push cutter blade, which is in a direction perpendicular to the direction in which the protrudent push cutter blade extends, has an angle a and an angle b, in which the angle a is larger than the angle b, wherein, in the cross-sectional shape, the angle a is an angle between a blade center line extending through a blade tip and a straight line corresponding to a side of the protrudent push cutter blade where the side faces the adhesive patch side, and the angle b is an angle between the blade center line extending through the blade tip and a straight line corresponding to another side of the protrudent push cutter blade where the side does not face the adhesive patch side, wherein angle a is 15 to 47.5° and angle b is 2.5 to 27.5°.