Core spun elastic composite yarn and woven fabric thereof

Abstract

The present invention provides a core spun elastic composite yarn comprises a sheath of at least one hard fiber, at least one elastic performance filament and at least one staple spun yarn. Said at least one hard fibers has an English cotton count from Ne 4 to Ne 60, said at least one elastic performance filament has a denier from 20 to 140 and said at least one staple spun yarn is formed from natural and/or synthetic staple fibers having a cotton count of Ne 8 to 100.

What is claimed: 
     
         1 . A core spun elastic spun composite yarn comprising: at least one elastic performance filament and at least one staple spun yarn, and a fibrous sheath of at least one staple fiber that surrounds the at least one elastic performance filament and the at least one staple spun yarn, wherein the elastic performance filament have a denier from 20 to 140, the staple spun yarn have an English cotton yarn count (Ne) from 8 to 100 and said fibrous sheath of at least one staple fiber has an English cotton yarn count (Ne) from 4 to 60. 
     
     
         2 . The composite yarn of  claim 1 , wherein the staple spun yarn have an English cotton yarn count (Ne) from 20 to 60. 
     
     
         3 . The composite yarn of  claim 1 , wherein said fibrous sheath of at least one staple fiber has an English cotton yarn count (Ne) from 7 to 40. 
     
     
         4 . The composite yarn of  claim 1 , wherein the elastic performance filament is 1 percent to 40 percent of total weight of the composite yarn and the staple spun yarn is 4 percent to 50 percent of total weight of composite yarn. 
     
     
         5 . The composite yarn in  claim 1 , wherein said fibrous sheath comprises natural or synthetic staple fibers, cotton, rayon, polyester, wool, acrylic or a combination thereof. 
     
     
         6 . The composite yarn in  claim 1 , wherein said at least one staple spun yarn is natural, re-generated, synthetic staple fibers or a combination thereof. 
     
     
         7 . The composite yarn in  claim 1 , wherein the staple spun yarn is a “Z” or “S” twist. 
     
     
         8 . The composite yarn of  claim 1 , wherein draft of the elastic performance filament is from 1.5 to 5.0 and the draft of the staple spun yarn is from 1.0 to 1.3. 
     
     
         9 . The composite yarn of  claim 1 , wherein said at least one elastic performance filament and said at least one staple spun yarn are twisted together first to form a central strand, and said fibrous sheath is twisted with said central strand and surrounding said filamentary strand. 
     
     
         10 . The composite yarn of  claim 1 , wherein said at least one elastic performance filament and said at least one staple spun yarn individually twist with said fibrous sheath, and said at least one elastic performance filament surrounded with fibrous sheath and said at least one staple spun yarn surrounded with fibrous sheath twist together forming the composite yarn. 
     
     
         11 . A woven stretch fabric comprising the composite yarn of  claim 1  in the warp or filling yarn or both. 
     
     
         12 . The woven fabric in  claim 11 , wherein the fabric is a plain woven, twill, satin, denim or pieced dyed. 
     
     
         13 . The woven stretch fabric in  claim 11 , wherein the fabric is denim. 
     
     
         14 . The woven stretch fabric in  claim 11 , wherein the fabric is piece dyed. 
     
     
         15 . The woven stretch fabric in  claim 11 , wherein warp or filling or both have an elongation from 10% to 40%. 
     
     
         16 . A core spun elastic spun composite yarn comprising: at least one elastic performance filament and at least one staple spun yarn, and a fibrous sheath of at least one staple fiber that surrounds the at least one elastic performance filament and the at least one staple spun yarn.