Two or three layer laminates of synthetic non-woven fabric and woven glass fabric or scrim, for use in bituminized roofing webs and sealing membranes, in which the layers are bonded by needling and consolidated with a binder

摘要

A laminate of two or more layers comprising an organic synthetic filament (polyester) non-woven layer and a woven web or scrim of glass fiber, pre- consolidated with a binding agent. The non-woven layer is bonded to the woven layer by needling so that part of the polyester filament penetrate through the laminate an emerge at the lower surface and lie adjacent to it. The formed laminate is consolidated with an acrylate or styrene binder An Independent claim is included for the method of producing the laminate which may have two layers or be a sandwich of the woven web between non-woven layers