Extendible transdermal therapeutic system

摘要

An active ingredient-containing transdermal therapeutic system with a nonadhesive backing layer, with an active ingredient-containing reservoir layer and with a self-adhesive surface facing the skin, where appropriate with redetachable protecting layer, is characterized by an elastic or plastically extensible diffusible backing layer with a metal layer which acts as permeability barrier for auxiliaries and active ingredients in the reservoir layer and is formed by film growth, in particular a metallization layer.