To produce a composite nonwoven fabric that has high ply separation strength and excellent flexibility, filter performance and water absorptivity, and is useful as a medical and hygienic material by laminating specific long-fiber webs with specific short-fiber webs to be three-dimensionally integrated into a confounding condition.
This composite nonwoven fabric is produced by fusion-spinning a separate-type two-component composite continuous-yarn aggregate composed of a fiber-forming polymer of lower melting point and a fiber-forming polymer of higher melting point which is incompatible with the polymer of low melting point and has a melting point of 30-180°C higher than that of the polymer of low melting point, taking up the spun yarns with an air sucker, accumulating the yarns on a traveling collector surface in opening condition to form webs, heat-compressing partly the composite single yarn aggregates of the webs to obtain a long-fiber web, laminating a short-fiber web composed of short fibers, such as cotton, wool and rayon, on the long-fiber web, then treating the web laminate with a high-pressure fluid, thereby integrating the long-fiber webs mutually, the long-fiber web with the short-fiber web, and the short-fiber webs mutually three-dimensionally in confounding condition, thus forming the objective composite nonwoven fabric.
MATSUNAGA ATSUSHI
KATO MICHIYO
SUZUKI KATSUNORI
YONEZAWA YASUHIRO
KENSEI NOBUO
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