Patch package structure

A patch package structure which comprises:

• a package comprising a first sheet material which is planar and a second sheet material which has been molded, a peripheral area of the first sheet material having been sealed to a peripheral area of the second sheet material to constitute the package, and a patch disposed in the package;
• wherein the patch comprises a backing, a pressure-sensitive adhesive layer formed on at least one side of the backing, and a release liner which protects the pressure-sensitive adhesive surface of the pressure-sensitive adhesive layer, the release liner having a weakening line for assisting a removal of the release liner;
• and
• wherein the second sheet material has the following parts in a central area thereof except the peripheral area thereof:
• a first protrudent part which projects in the direction opposite to the first sheet material and is located in a position corresponding to the periphery of the patch,
• a second protrudent part which projects in the direction opposite to the first sheet material and is located in a position corresponding to the weakening line of the patch,
• a third protrudent part which projects in the direction opposite to the first sheet material and is located in a position that intersects the second protrudent part at an angle of 360/n degrees, wherein n is a natural number of 3 or more, at a position corresponding to the center of the weakening line of the patch,
• wherein each protrudent part has a projection height, and
• an elevated part which has been elevated above the peripheral area of the second sheet material to a projection height smaller than the projection heights of the first protrudent part, second protrudent part, and third protrudent part in the direction opposite to the first sheet material and is located in a region of the central area other than the first protrudent part, the second protrudent part, and the third protrudent part.