A multi-denier nonwoven composite fabric having a nested structure is hydraulically treated by particular process parameters to improve softness and tactile feel.

A multi-denier nonwoven composite fabric having a nested structure is hydraulically treated by particular process parameters to improve softness and tactile feel.

The invention concerns spunbond nonwoven fabrics comprising a plurality of bicomponent filaments, the bicomponent filaments having a segmented pie cross-sectional configuration including a polycarbonate component and a polypropylene component, wherein a ratio of the polypropylene component to the polycarbonate component is between about 5:95 and about 95:5.

The invention concerns spunbond nonwoven fabrics comprising a plurality of bicomponent filaments, the bicomponent filaments having a segmented pie cross-sectional configuration including a polycarbonate component and a polypropylene component, wherein a ratio of the polypropylene component to the polycarbonate component is between about 5:95 and about 95:5.

A natural fiber felt is provided, which is a film formed by processes of binding a natural fiber net with a binder, extruding, drying and shaping the natural fiber net. A surface of the film is coated with a waterproof layer. The foam binder is formed by combining modified starch serving as a binder and urea serving as a foaming agent with water. A water-repellent agent fruit wax emulsion is employed to form the waterproof layer. The natural fiber net is carded by a carding machine at one time, and the foam binder is sprayed onto the natural fiber net to bind the natural fiber net so as to form the film. The product has characteristics of ultra-thinness and high strength with good performances on heat preservation, moisturizing ability, waterproof and air permeability.

A natural fiber felt is provided, which is a film formed by processes of binding a natural fiber net with a binder, extruding, drying and shaping the natural fiber net. A surface of the film is coated with a waterproof layer. The foam binder is formed by combining modified starch serving as a binder and urea serving as a foaming agent with water. A water-repellent agent fruit wax emulsion is employed to form the waterproof layer. The natural fiber net is carded by a carding machine at one time, and the foam binder is sprayed onto the natural fiber net to bind the natural fiber net so as to form the film. The product has characteristics of ultra-thinness and high strength with good performances on heat preservation, moisturizing ability, waterproof and air permeability.

An elastic non-woven fabric with bicomponent elastic composite fibers, manufactured by randomly paving bicomponent elastic composite fibers as a layer and hot-rolling. The bicomponent elastic composite fiber includes an inner core fiber of SBS, SEBS, TPO or TPS and a sheath outer layer of PP or PE covering on an outer surface of the inner core fiber. A ratio of a thickness of the sheath outer layer to a radius of the inner core fiber is 1:9 to 9:1. The bicomponent elastic composite fiber has a linear density of 0.5-5 deniers, a stretchability of 300-600%, and a deformation rate of 0-25% after being stretched to 400%. The present invention has the advantages of good elasticity, good stretchability, good dyeability, acid and alkali resistance, quick-drying and non-absorbency, antibacterial and deodorizing, and light and soft texture properties, thereby can avoid cold and sticky feel and will not cause reflection.

An elastic non-woven fabric, manufactured by bonding a pre-stretched elastic film and elastic cloths, includes an elastic film with a stretch range of 0-300% and two elastic cloths each with a stretchability of 150-300%. While at the second natural width, the two elastic cloths are respectively bonded to upper and lower surfaces of the elastic film pre-stretched to a first stretched width. By bonding the two elastic cloths to the elastic film after stretching the elastic film in advance, the elastic non-woven fabric of the present invention can have high stretchability and high tensile strength and thus will not have serious wrinkles on the surfaces thereof and will not be easily torn broken. Because the stretchability of the elastic non-woven fabric is greatly improved, the user can use a smaller cutting width to divide each cylindrical master-roll into more cylindrical sub-rolls, thereby improving the production efficiency.

An elastic non-woven fabric, manufactured by bonding a pre-stretched elastic film and elastic cloths, includes an elastic film with a stretch range of 0-300% and two elastic cloths each with a stretchability of 150-300%. While at the second natural width, the two elastic cloths are respectively bonded to upper and lower surfaces of the elastic film pre-stretched to a first stretched width. By bonding the two elastic cloths to the elastic film after stretching the elastic film in advance, the elastic non-woven fabric of the present invention can have high stretchability and high tensile strength and thus will not have serious wrinkles on the surfaces thereof and will not be easily torn broken. Because the stretchability of the elastic non-woven fabric is greatly improved, the user can use a smaller cutting width to divide each cylindrical master-roll into more cylindrical sub-rolls, thereby improving the production efficiency.

A spunbonded nonwoven fabric of the present invention is characterized by being composed of a polyolefin fiber, wherein the average pore diameter of the nonwoven fabric surface is 0.1-25 m, the maximum pore diameter is 50 m or less, and the water pressure resistance per unit basis weight is 7 mmH.sub.2O/(g/m.sup.2) or more.