Adhesive patch

A - Human Necessities – 61 – K

Patent

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Details

A61K 31/618 (2006.01) A61K 9/70 (2006.01) A61K 47/32 (2006.01) A61K 47/34 (2006.01) A61P 17/00 (2006.01) A61P 29/00 (2006.01)

Patent

CA 2713946

An adhesive patch comprising a stretchable support and an adhesive layer laminated on at least one side of the support, wherein the stretchable support comprises a woven fabric knitted in stockinette stitch on both sides having two or more rows of crimped polyethylene terephthalate multifilament yarns, the adhesive layer contains 25 to 50% by mass of a liquid organic ingredient and 25 to 50% by mass of a thermoplastic elastomer based on the total mass of the layer and contains 10% by mass or more of methyl salicylate as the liquid organic ingredient based on the total mass of the layer, and the storage elastic modulus (G') of the adhesive layer is 30000 to 75000 Pa at 10 rad/s and 37°C.

L'invention porte sur un timbre adhésif comprenant un substrat ayant une aptitude à l'étirage et une couche d'adhésif sensible à la pression superposée sur au moins un côté du substrat. Le substrat étirable comprend un tissu tissé tricoté des deux côtés comprenant au moins deux rangées d'un fil multifilament de poly(téréphtalate d'éthylène) frisé. La couche d'adhésif sensible à la pression comprend 25-50 % en masse d'un ingrédient organique liquide et 25-50 % en masse d'un élastomère thermoplastique sur la base de la couche d'adhésif totale, l'ingrédient organique liquide contenant au moins 10 % en masse de salicylate de méthyle sur la base de la couche d'adhésif totale. La couche d'adhésif sensible à la pression a un module d'élasticité de stockage (G') tel que mesuré à 10 rad/s et 37 °C de 30 000-75 000 Pa.

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