Adhesive articles and release liners

C - Chemistry – Metallurgy – 09 – J

Patent

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Details

C09J 7/00 (2006.01)

Patent

CA 2619637

The present application is directed to adhesive articles and release liners. Namely, the present application is directed to an article comprising an adhesive layer with a structured surface. The structured surface comprises a first groove and a second groove recessed into the adhesive layer from a reference plane defined by the adhesive surface on either rim of the groove. In some embodiments, the second groove is contained within the first groove, and in other embodiments the grooves are separate. The first groove and the second groove have walls. The wall angle of the first groove with respect to the reference plane is non-zero and is smaller than the wall angle of the second groove with respect to the reference plane. The application is also directed to release liners for the adhesive article, wherein the surface of the release liner is the inverse of the adhesive surface.

La présente invention concerne des articles adhésifs et des revêtements anti-adhérents. L~invention porte notamment sur un article comprenant une couche adhésive dotée d~une surface structurée. La surface structurée comprend une première et une seconde rainure en retrait dans une couche adhésive par rapport à un plan de référence défini par la surface adhésive sur les deux bords de la rainure. Dans certains modes de réalisation, la seconde rainure est logée dans la première rainure, et dans d~autres modes de réalisation les rainures sont séparées. La première et la seconde rainure possèdent une paroi. L~angle de la paroi de la première rainure par rapport au plan de référence n~est pas égal à zéro et est inférieur à l~angle de la paroi de la seconde rainure par rapport au plan de référence. L~invention a également trait à des revêtements anti-adhérents destinés aux articles adhésifs, la surface du revêtement anti-adhérent étant l~inverse de la surface adhésive.

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