Pattern coated adhesive article

Details Pattern coated adhesive article Pattern coated adhesive article

B - Operations, Transporting

32

B

B32B 7/14 (2006.01) A61F 13/02 (2006.01) B32B 5/26 (2006.01) B32B 33/00 (2006.01)

Patent

CA 2381825

The invention relates to an adhesive article (30) comprising at least one backing layer (31) with a first and second surface and a pressure sensitive adhesive layer (32) adhered to the first surface of the backing layer (31) in a pattern, wherein the pattern of the adhesive layer (32) has an adhesive free area (33) of less than about 25 % and wherein the adhesive article (30) has a water vapor transmission rate of greater than about 2000g/sqm/24 hour. The invention also relates to a method of forming an adhesive article (30) comprising (a) providing a release liner (34), (b) applying pressure sensitive adhesive (32) in a pattern wherein the free adhesive area (33) is less than 25 %, and (c) applying a backing layer (31) to the pressure sensitive adhesive (32).

Cette invention concerne un article adhésif (30) comprenant au moins une couche d'appui (31) avec une première et une seconde surface et une couche adhésive autocollante (32) collée sur une première surface de la couche d'appui (31) selon un motif, ledit motif présentant une surface sans adhésif (33) de moins de 25 % environ et le taux de transmission de la vapeur d'eau étant supérieur à environ 2000 g/m<2> par 24 heures. L'invention concerne également un procédé d'obtention d'un article adhésif (30) consistant à (a) utiliser une couche anti-adhésive (34), (b) appliquer un adhésif autocollant (32) en motif dans lequel la partie non adhésive (33) est inférieure à environ 25 %, et (c) appliquer une couche d'appui (31) sur l'adhésif autocollant (32).

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