Abstract: A two-layer laminate and a process for manufacturing a two-layer laminate including a first nonwoven layer including thermoplastic fibers, wherein the first nonwoven layer is pre-consolidated and pre-shrunk, a second nonwoven layer including glass fibers, and at least one thermoplastic binder, wherein the first nonwoven layer and the second nonwoven layer are bonded together by application of heat, the second nonwoven layer is pre-consolidated and the thermoplastic binder originates from the second nonwoven layer.

Abstract: In a method of manufacturing a laminate from at least two layers, a spun bonded nonwoven layer containing thermoplastic endless filaments, as a first layer, and a wetlaid nonwoven layer manufactured by the wet method with short staple fibers made of inorganic fibers (wetlaid nonwoven layer), as the second layer, are bonded together by a joint heat and pressure treatment. To make the wetlaid nonwoven layer, initially short staple fibers, thermoplastic binder, and possible other additives, suspended in water, are applied to a water-permeable substrate that holds back the other components and are dried to form a nonwoven layer. The dried wetlaid nonwoven layer, without further addition of binder, is combined with the spun bonded nonwoven layer before the heat and pressure treatment. A laminate of the invention is composed of at least two layers. A first layer is a spun bonded nonwoven layer containing thermoplastic endless filaments, and a second layer is a wetlaid nonwoven layer containing inorganic fibers.