Polyolefin isolation membrane

Details Polyolefin isolation membrane Polyolefin isolation membrane

C - Chemistry, Metallurgy

08

J

C08J 9/228 (2006.01) B32B 5/18 (2006.01) B32B 27/32 (2006.01) C08J 5/18 (2006.01) C08J 9/04 (2006.01) E04F 15/02 (2006.01)

Patent

CA 2500133

This invention relates to an isolation gasket intended to reduce the damage and wear of finishing layers, such as ceramic tiles, when installed over a rigid support layer, such as concrete. The disclosed isolation gasket prevents the propagation of cracks that may develop in the supporting layer through to the finishing layer. A preferred isolation gasket is a low~-density, crosslinked polyolefin foam having a density of from about 60 kg/m3 to about 200 kg/m3, a compressive strength of from about 1/5 kg/cm2 to about 8 kg/cm2, a shear strength of at least 2 mm, and a thickness of at least 0.5 mm.

La présente invention concerne un joint d'isolation conçu pour réduire le dommage et l'usure de couches de finition, telles que de carreaux de céramique, lorsqu'ils sont installés sur une couche support rigide, telles que du ciment. Le joint d'isolation selon l'invention empêche la propagation de fissures qui peuvent se développer dans la couche support et s'étendre dans la couche de finition. Un joint d'isolation préféré est une mousse polyoléfinique réticulée, basse densité présentant une densité comprise entre environ 60 kg/m?3¿ et environ 200 kg/m?3¿, une résistance à la compression comprise entre environ 1/5 kg/cm?2¿ et environ 8 kg/cm?2¿, une résistance au cisaillement d'au moins 2 mm, et une épaisseur d'au moins 0,5 mm.

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