| abstract |
The present invention relates to a surfacing product for plasterboards, comprising a woven/scrim laminate made up of (a) a weave of glass fibres bound by a first organic polymer, preferably cross-linked, hereinafter referred to as "binder", and (b) a scrim of glass yarns bound by a second organic polymer, hereinafter referred to as "adhesive", made up of 50 wt% to 100 wt% of PVDC or a copolymer made of polyvinylidene chloride, and 0 wt% to 50 wt% of a styrene-butadiene rubber (SBR), the scrim of glass yarns being adhered to the weave of glass fibres by means of said adhesive, the woven/scrim laminate being coated, on the scrim surface thereof, with a continuous layer of a hydrophobic coating containing: 8 wt% to 25 wt%, preferably 9 wt% to 20 wt%, in particular 10 wt% to 15 wt%, of an organic polymer selected among the styrene-butadiene rubbers (SBR), the acrylic polymers, poly(vinyl chloride) (PVC), polyvinylidene chloride copolymers and mixtures of at least two of these organic polymers; and 75 wt% to 92 wt%, preferably 80 wt% to 91 wt% and in particular 85 wt% to 90 wt%, of mineral particles, said percentages being expressed relative to the sum of these two components, said hydrophobic coating covering the scrim of glass yarns but leaving the weave surface of the laminate bare. |