Patent ID: 7494558
Filing Date: 2009-02-24
Classification: B32B,D04H,D06N,E04D,Y10T

Abstract:
1. A process for producing a laminate comprising at least two layers, at least one layer comprising a nonwoven made from synthetic organic fibers and an outer layer comprising at least one layer of glass fibers, said process comprising: (a) applying a nonwoven made from synthetic organic fibers to a layer comprising glass fiber preconsolidated with a resin; (b) bonding the layers by needling in the direction of the layer comprising glass fibers such that some of the synthetic fibers penetrate the glass fiber layer and emerge from the outer surface of the glass fiber layer; (c) applying a resin binder solely to the side of the glass fiber layer away from the nonwoven synthetic fiber layer using a rotating roll whereby sufficient amounts of the resin binder penetrate into the glass fiber layer to secure the synthetic fibers within and on the surface of the glass fiber layer and wherein none of the binder resin enters the nonwoven synthetic fiber layer, which is free of said resin binder; and (d) drying the laminate.