Elastic non-woven fabric with bicomponent elastic composite fibers

Abstract

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.

What is claimed is: 
     
         1 . An elastic non-woven fabric with bicomponent elastic composite fibers, manufactured by randomly paving a plurality of bicomponent elastic composite fibers as a layer and then fixing it by a plurality of hot-rolling points, wherein each of the bicomponent elastic composite fibers has a bicomponent fiber structure with a core sheath or a core spun and includes an inner core fiber and a sheath outer layer covering on an outer surface of the inner core fiber;
 wherein the inner core fiber includes a polystyrene copolymer material of a styrene-butadiene block copolymer, a styrene-ethylene-butylene-styrene block copolymer (SEBS) or a thermoplastic polyolefin elastomer (TPO), or includes a thermoplastic polystyrene elastomer (TPS);   wherein the sheath outer layer includes polypropylene (PP) or polyethylene (PE);   wherein a ratio of a thickness of the sheath outer layer to a radius of the inner core fiber is between 1:9 to 9:1;   wherein each of the bicomponent elastic composite fibers has a linear density of 0.5-5 deniers and a stretchability of 300-600%; and   wherein each of the bicomponent elastic composite fibers has a deformation rate of 0-25% after being stretched to 400%.   
     
     
         2 . The elastic non-woven fabric according to  claim 1 , wherein the inner core fiber has a stretchability of 100-600%. 
     
     
         3 . The elastic non-woven fabric according to  claim 1 , wherein the sheath outer layer has dyeability. 
     
     
         4 . The elastic non-woven fabric according to  claim 3 , wherein the polypropylene has a graft-dyeing base for dyeing. 
     
     
         5 . The elastic non-woven fabric according to  claim 1 , wherein the ratio of the thickness of the sheath outer layer to the radius of the inner core fiber is 9:1, the bicomponent elastic composite fiber has a linear density of 1-3 deniers and a stretchability of 500%, and the bicomponent elastic composite fiber has a deformation rate of 1% after stretching to 400%.