Abstract: A conical-projections-sheet packaging body includes a conical-projections sheet, a conical-projections forming sheet, and a sealing sheet. The conical-projections sheet includes a substrate and a plurality of conical projections formed on a surface of the substrate. The conical-projections forming sheet has a plurality of conical-recess parts, which is used to form the plurality of conical projections and wherein the plurality of conical projections is disposed. The conical-projections forming sheet protects the conical projections in a state wherein the plurality of conical projections is tightly adhered to the surface of the substrate. The sealing sheet, by being fixed to the conical-projections forming sheet, seals the conical-projections sheet between the conical-projections forming sheet and the sealing sheet.

Abstract: A low cost transdermal patch comprises water soluble microneedles and has good performance. A transdermal patch comprises a microneedle sheet, which comprises a plurality of water soluble microneedles, moisture permeable sheet, wherethrough water vapor passes, and a reinforcing film. The reinforcing film is adhered, by an adhesive layer having an adhesive strength less than that of an adhesive layer, onto an outer surface of the moisture permeable sheet, which is the side opposite the skin opposing surface. The reinforcing film includes a water vapor barrier sheet, which blocks the passage of water vapor through at least a first area, and a removable portion around the water vapor barrier sheet. The removable portion is configured such that it can be separated from and peeled off the water vapor barrier sheet.

Abstract: A low cost transdermal patch comprises water soluble microneedles and has good performance. A transdermal patch comprises a microneedle sheet, which comprises a plurality of water soluble microneedles, moisture permeable sheet, wherethrough water vapor passes, and a reinforcing film. The reinforcing film is adhered, by an adhesive layer having an adhesive strength less than that of an adhesive layer, onto an outer surface of the moisture permeable sheet, which is the side opposite the skin opposing surface. The reinforcing film includes a water vapor barrier sheet, which blocks the passage of water vapor through at least a first area, and a removable portion around the water vapor barrier sheet. The removable portion is configures such that it can be separated from and peeled off the water vapor barrier sheet.