Reinforced non-woven fabrics and method of making same

Abstract

A non-woven product of (1) a fleece layer with (2) sticking yarns arranged longitudinally in parallel at definite pitches and (3) a number of lines formed with short fibers of the fleece layer joined with filaments of an adhesive polymer adhering crosswise to the sticking yarns at parts where said filaments have been allocated on the surface of said fleece layer, is prepared by placing the fleece layer upon a warp layer composed of a number of yarns arranged flat in parallel at definite pitches into a definite width whose arrangement is fixed by laterally adhering a number of filaments of the adhesive polymer to said yarns and making the warp layer adhere to the fleece layer. Another type of non-woven product of a fleece layer is prepared by adhering cut sheets of another warp layer having the structure similar to the above-mentioned side by side without leaving any gaps between each other as wefts to the fleece layer surface of the non-woven product prepared as above-mentioned in a manner so as to sandwich the fleece layer between sticking yarns arranged longitudinally and in parallel and sticking yarns arranged laterally and in parallel. A fleece layer is placed upon a warp layer by filtering a fluid bearing numberless short fibers floating therein, through said warp layer as a filter medium, while running said warp layer over a stationary suction zone provided under the running warp layer.