Abstract:
A low cost transdermal patch, which comprises water soluble microneedles and has good performance, and a method of manufacturing the same are provided. A transdermal patch (1 E) comprises a microneedle sheet (310), which comprises a plurality of water soluble microneedles (311), moisture permeable sheet (320), wherethrough water vapor passes, and a reinforcing film (30E). The reinforcing film (30E) is adhered, by an adhesive layer (35) having an adhesive strength less than that of an adhesive layer (322), onto an outer surface (320b) of the moisture permeable sheet (320), which is the side opposite the skin opposing surface (320a). The reinforcing film (30E) includes a water vapor barrier sheet (31), which blocks the passage of water vapor through at least a first area (Ar1), and a removable portion (32) around the water vapor barrier sheet (31). The removable portion (32) is configures such that it can be separated from and peeled off the water vapor barrier sheet (31).
Abstract:
A conical-projections-sheet packaging body (1) includes a conical-projections sheet (23), a conical-projections forming sheet (7), and a sealing sheet (9). The conical-projections sheet (23) includes a substrate (23a) and a plurality of conical projections (23b) formed on a surface (23c) of the substrate (23a). The conical-projections forming sheet (7) has a plurality of conical-recess parts (33a), which is used to form the plurality of conical projections (23b) and wherein the plurality of conical projections (23b) is disposed. The conical-projections forming sheet (7) protects the conical projections (23b) in a state wherein the plurality of conical projections (23b) is tightly adhered to the surface (23c) of the substrate (23a). The sealing sheet (9), by being fixed to the conical-projections forming sheet (7), seals the conical-projections sheet (23) between the conical-projections forming sheet (7) and the sealing sheet (9).