Method and device for determining adhesive performance of...

G - Physics – 01 – N

Patent

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Details

G01N 19/04 (2006.01) G01N 3/02 (2006.01) G01N 3/00 (2006.01)

Patent

CA 2286069

The invention relates to a method for determining the adhesive performance of flat adhesive products such as medical adhesive tape and especially adhesive application systems such as transdermal therapeutic systems (TTS). The inventive method is characterized in that a flat adhesive product with an adhesive layer having a defined application weight per surface unit and a defined adhesive mass quality is stuck to an elastic carrier film having a defined thickness and elasticity at a predetermined temperature and given surface pressure. Said film is stretched like a membrane between two half shells of a test cell and the carrier film with the flat adhesive product stuck thereto undergoes periodically time-sequenced alternating elastic tensing and slackening according to defined stress loads starting from the side opposite to the flat adhesive product. Progressively occurring detachment of the adhesive layer per time unit is observed and qualitatively or quantitatively evaluated.

L'invention concerne un procédé pour déterminer le comportement au collage de produits plats autocollants, tels que les pansements adhésifs médicaux et notamment les systèmes d'administration autocollants comme les systèmes transdermiques thérapeutiques. Ce procédé est caractérisé en ce qu'un produit plat pourvu d'une couche adhésive de poids d'application défini par unité de surface, et de qualité définie de la matière adhésive est collé, sous une pression de surface et à une température prédéterminées, sur un film support élastique d'épaisseur et d'élasticité définies, et ce film est fixé, à la manière d'une membrane, entre les demi-coquilles d'une cellule d'essai. Le film support avec le produit plat collé dessus subit en séquence répétée dans le temps, depuis le côté opposé au produit plat, un cycle de charge/décharge avec des allongements élastiques alternés provoqués par des efforts définis, et on observe en l'évaluant qualitativement et/ou quantitativement un décollement progressif de la couche adhésive par unité de surface.

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