Composite facer for wallboards

B - Operations – Transporting – 32 – B

Patent

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Details

B32B 13/14 (2006.01) B32B 5/02 (2006.01) B32B 7/12 (2006.01) B32B 13/12 (2006.01) B32B 37/02 (2006.01) B32B 37/14 (2006.01) E04C 2/24 (2006.01)

Patent

CA 2439449

A composite facer material for use with cementitious wallboards, where the composite facer is embedded in a top and bottom face thereof. The composite facer material, in a most preferred embodiment, comprises two layers. The first layer is preferably a carded polyester nonwoven mat, which is bonded to a second layer comprising preferably a tri-directional laid scrim fabric reinforcement layer made of continuous glass fibers. The two layers are preferably bonded together using an acrylic adhesive, which offers superior adhesion between the layers as well as superior adhesion between the composite facing material and the cementitious core.

L'invention concerne un matériau de revêtement composite convenant pour des panneaux muraux à base de ciment, et comprenant un revêtement composite intégré à la partie supérieure et inférieure du panneau. Dans sa forme de réalisation préférée, ce matériau de revêtement comprend deux couches. La première couche est de préférence un mat non tissé de polyester cardé qui est collé sur une seconde couche, laquelle est de préférence une couche de renfort en canevas léger tridirectionnel constitué de fibres de verre continues. Les deux couches sont de préférence assemblées au moyen d'un adhésif acrylique qui permet d'obtenir une adhérence élevée entre les couches ainsi qu'une adhérence élevée entre le matériau de revêtement composite et le noyau à base de ciment.

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