Laminate

Details Laminate Laminate

1993-08-11

1995-03-21

Lesmes, George F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428286, 428287, 428302, 428284, 428298, B32B 1500, B32B 2700, B32B 522

Patent

active

053994221

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. The second layer is a wetlaid nonwoven layer made by the wet method with short staple fibers, which contains a thermoplastic binder by which the first and second layers are bonded together with heat.

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Dictionary of Textiles-Fairchild, 6th Ed. (1979), p 580.
Dictionary of Fiber and Textile Technology (Hoechst Celanese), 1989, p. 149.
Japanese Abstract, Mar. 1983; 5 9161 435 A.

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