PLASTER CONTAINING AN ACTIVE SUBSTANCE

摘要

The proposed plaster containing an active substance for the controlled release of active substances comprises a backing layer, a reservoir layer adjacent to it which contains active substance and softens at body temperature, a membrane which controls the release of the active substance, an adhesive system with which the plaster can be fixed to the skin, and a removable protective layer. The proposed plaster is characterized by the fact that the reservoir layer which softens at body temperature is separated from the control membrane by a device made of a material which is not permeable to the active substance and extends right across the mutually opposing surfaces of the reservoir and membrane and has at least one passage for the reservoir layer.