Pressure-sensitive adhesive tapes

Details Pressure-sensitive adhesive tapes Pressure-sensitive adhesive tapes

A - Human Necessities

61

F

A61F 13/02 (2006.01) C09J 7/04 (2006.01)

Patent

CA 2530453

A vapor permeable article includes a porous backing substrate and an open fabric applied to one surface of the backing substrate. The open fabric has a greater porosity than that of the backing substrate. The open fabric is coated with an adhesive in such a manner that the open fabric remains porous and vapor permeable. The coated article can have a greater tensile strength in the cross direction than in the machine direction, and the adhesive can penetrate into at least a portion of a thickness of the porous backing.

Cette invention concerne un article perméable à la vapeur d'eau comprenant un substrat d'appui poreux et un tissu ouvert appliqué sur une seule surface dudit substrat. La porosité du tissu ouvert est supérieure à celle du substrat d'appui. Le tissu ouvert est enduit d'un adhésif tel que ce tissu reste poreux et perméable à la vapeur. L'article enduit peut présenter une résistance à la traction plus importante dans le sens transversal que dans le sens machine, et l'adhésif peut pénétrer sur au moins une partie de l'épaisseur du dos poreux.

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