Waterproofing membrane

B - Operations – Transporting – 32 – B

Patent

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Details

B32B 27/04 (2006.01) B32B 27/12 (2006.01)

Patent

CA 2572908

A waterproofing membrane 10 including a layer of bentonite that has sufficient flexibility to be bent upon itself 360~ around a 0.5 inch radius. The layer of bentonite is preferably made of bentonite particles compacted to at least 25 pounds per square inch and held together by an adhesive matrix. The waterproofing membrane is preferably four layers, including a scrim 12, a first compacted layer of bentonite particles secured to the scrim, and a water permeate layer 18 disposed on the first layer 14 of bentonite particles and second layer 16 of bentonite particles compacted and disposed on the water permeate layer 18. The bentonite particles may be used on a surface of a thermal insulating board 22 to form a composite waterproofing and insulating structure.

L'invention concerne une membrane d'étanchéité (10) comprenant une couche de bentonite suffisamment flexible pour être repliée à 360° sur un rayon de 0,5 pouce. De préférence, la couche de bentonite est constituée de particules de bentonite compactées à au moins 25 livres par pouce carré et maintenues ensemble par une matrice adhésive. De préférence, la membrane d'étanchéité comporte quatre couches, y compris un canevas (12), une première couche de particules de bentonite compactées, fixée au canevas, une couche perméable à l'eau (18) disposée sur la première couche (14) de particules de bentonite et une seconde couche (16) de particules de bentonite compactées, disposée sur la couche perméable à l'eau (18). Les particules de bentonite peuvent être utilisées sur une surface d'un panneau d'isolation thermique (22) pour former une structure composite d'étanchéité et d'isolation.

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