Adhesive Skin Patch with Support Liner and Manufacturing Method of the Same

A manufacturing method of an adhesive skin patch in which a support liner is attached, the adhesive skin patch comprising at least:

• a drug product in a form of a strip;
• and
• a release liner longer than the drug product, wherein
• the support liner includes a backing film and an adhesive layer disposed on a surface of the backing film, the support liner being attached to the drug product,
• the drug product is a quadrilateral drug product with two long sides and two short sides, the two long sides being straight lines of approximately equal lengths in parallel with one another, and the two short sides being a pair of elliptical arcs that are convex outward having lengths equal to one another, and
• a longest interval between the two short sides of the drug product is 20.0 mm or more and 50.0 mm or less, and an interval between the two long sides of the drug product is 5.0 mm or more and 37.5 mm or less, wherein
• the manufacturing method comprises:
• a step of punching out the drug product into a shape including the elliptical arc having:
• an ellipse major axis of 20.0 mm or more and 50.0 mm or less;
• and an ellipse minor axis of 14.8 mm or more and less than 50.0 mm, and the minor axis of at least 2.0 mm wider than the interval between the two long sides of the drug product;
• a step of attaching a support liner material over a whole surface of the drug product punched out into the shape including the elliptical arc;
• and
• a step of obtaining the support liner on which the quadrilateral drug product is attached by punching out the support liner material together with the drug product formed by having the support liner material attached.