Process for producing an adhesive patch, comprising: a step of preparing a pressure sensitive adhesive sheet (11, 21), comprising a support (12, 22, 32), a pressure sensitive adhesive layer (13, 23 , 33) formed on at least one side of the support, and a release liner (14, 24, 34) disposed on the pressure sensitive adhesive layer； and a step of perforating an adhesive patch (15), comprising a support, a pressure sensitive adhesive layer formed on at least one side of the support, and a release liner disposed on the pressure sensitive adhesive layer outside of the pressure sensitive adhesive sheet with an outgoing thrust cutter blade (26), in which, at least one edge portion of the outward thrust cutter blade, a cross-sectional shape of the outgoing thrust cutter blade , which is in a direction perpendicular to the direction in which the protruding thrust cutter blade extends, has an angle a and an angle b, in which, in the form of a cross section, the angle a is an angle between a central blade line (211), which extends through a blade tip and a straight line corresponding to one side of the protruding thrust cutter blade that is oriented in one direction (27) facing the adhesive patch, and the angle b is an angle between the central blade line (211), which extends through the blade tip, and a corresponding straight line on the other side of the protruding thrust cutter blade that is not oriented in one direction (27 ) facing the adhesive patch, and characterized in that the angle a is greater than the angle b.Procedimiento para producir un parche adhesivo, que comprende: una etapa de preparar una lámina adhesiva sensible a la presión (11, 21), que comprende un soporte (12, 22, 32), una capa adhesiva sensible a la presión (13, 23, 33) formada sobre por lo menos un lado del soporte, y un revestimiento de liberación (14, 24, 34) dispuesto sobre la capa adhesiva sensible a la presión； y una etapa de perforar un parche adhesivo (15), que comprende un soporte, una capa ad
