The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 13, 2001
Filed:
Sep. 22, 1995
Dieter Anhauser, Melsbach, DE;
Lothar Deurer, Koblenz, DE;
Thomas Hille, Neuwied, DE;
Peter Steinborn, Neuwied, DE;
LTS Lohmann Therapie-Systeme GmbH & Co. KG, Neuwied, DE;
Abstract
A process for continuously manufacturing transdermal therapeutic patches having a backing layer, a pressure-sensitive adhesive drug reservoir layer, and a removable protective layer, whereby loss of active substances during fabrication of the patches is minimized, said process being characterized in that, in a tape-like laminate having a pressure-sensitive adhesive backing layer (,) and a removable protective layer (,), single quadrangular pressure-sensitive adhesive drug reservoir sections (,) are inserted one after the other in the longitudinal direction between the layers (,); the clearance between said drug reservoir sections remains constant in the longitudinal direction; their width is calculated such that the backing layer (,) and the removable protective layer (,) project beyond both sides of said sections; the pressure-sensitive adhesive backing layer (,) is first cut by punching in such a way that the punching line (,) surrounds the individual drug reservoir sections (,) at an evident distance from their outer dimensions; the the resulting lattice-type refuse of the drug-free pressure-sensitive adhesive backing layer (,) is removed; and subsequently the protective layer (,) is cut in the resultant spaces between the drug reservoir sections (,).