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:
Oct. 30, 2001
Filed:
Feb. 01, 2000
Stefan Bracht, Ochttendung, DE;
LTS Lohman Therapie-Systeme GmbH, Neuwied, DE;
Abstract
A process for ascertaining the adhesive behaviour of pressure-sensitive adhesive flat materials such as medicinal adhesive tape and, in particular, pressure-sensitive adhesive application systems such as transdermal therapeutic systems (TTS) is characterized in that a flat material (,) with an adhesive layer (,) of a defined coating weight per unit area and of defined quality of the adhesive mass is adhered with predetermined surface pressure and at a predetermined temperature to an elastic carrier film (,) of defined thickness and elasticity, and that said carrier film (,) is clamped into a test cell (,), in the manner of a membrane, between half-shells (,) of a test cell (,), and that the carrier film (,) along with the adhered flat material (,) is subjected, in chronologically repeated sequence, to loading and unloading with alternating elastic stretchings by defined loading forces from the side facing away from the flat material, and that a detachment of the adhesive layer, which detachment arises progressively per unit of time, is observed and qualitatively and/or quantitatively evaluated.