Method and device for testing the adhesion of a body on a substrate
AssigneeLTS Lohmann Therapie-Systeme AG
InventorDieter Paulukat
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Abstract
Disclosed are a method and device for testing the adhesion of an adhesive, planar body on a planar substrate, wherein the planar body is applied adhesively on the substrate, the substrate is moistened, and a mechanical force is exerted on the substrate by means of an element in the form of a dumbbell-shaped magnetic stirring rod acting on the side of the substrate facing away from the adhesively applied body, wherein the substrate is repeatedly reversibly deformed at least in parts of the adhesive region of the planar body by means of the exertion of force, and, after a period of time, exertion of the mechanical force is ended, and the remaining adhesion of the planar body is assessed in qualitative and/or quantitative terms.
Claims17
A method for testing the adhesion of an adhesive, planar body (18) on a substrate (17), comprising first of all applying the body (18) adhesively to the substrate (17), then moistening the substrate (17), and exerting a mechanical force on the substrate by means of an element in the form of a dumbbell-shaped magnetic stirring rod (3) acting on the side of the substrate (7) facing away from the body (18), and repeatedly reversibly deforming the substrate (17) at least in parts of the adhesive region of the body (18) by the action of the force and, after a period of time encompassing a predetermined load population, ending the mechanical loading, and assessing qualitatively and/or quantitatively the remaining adhesion of the body (18) wherein the force which repeatedly deforms the substrate (17) is exerted by a dumbbell-shaped magnetic stirring rod (3) driven by a magnetic stirrer (7) and movable in a vessel (2) open at the top, in such a way that the dumbbell-shaped magnetic stirring rod rotates underneath the substrate while deforming the latter.
Dependencies are inferred from the claim text.