Roofing membrane comprising microspheres

Details Roofing membrane comprising microspheres Roofing membrane comprising microspheres

E - Fixed Constructions

04

D

E04D 5/10 (2006.01) E04D 5/12 (2006.01)

Patent

CA 2586257

A foam suitable for use in roofing systems is provided. Roofing membranes comprising the foam have superior flowing properties at high temperatures without sacrificing low temperature performance. A particular useful roofing membrane comprises an upper surface layer, a reinforcement layer, and optionally a lower self-adhesive layer, wherein expanded microspheres are provided in one or more of said layers in an amount of between 0.01 and 10% based on the total weight of the roofing membrane. Moreover a method of making roofing membranes is provided.

L'invention concerne une mousse pouvant être utilisée dans des systèmes de couverture. Les membranes de couverture comprenant cette mousse présentent des caractéristiques de fluidité supérieures à haute température, et ce, sans sacrifier les performances à basse température. Une membrane de couverture particulièrement utile comprend une couche de surface supérieure, une couche renfort et éventuellement une couche inférieure autocollante, des microsphères expansées étant prévues dans une ou plusieurs desdites couches, à raison de 0,01 à 10 % du poids total de la membrane de couverture. L'invention concerne de plus un procédé de fabrication de membranes de couverture.

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