Method of Industrial Producing Elastomeric Yarn and Fabric thereof

Abstract

The present invention relates to make stretch yarn by using at least two roving and two elastomeric filaments with variable draft to allow the yarn made in the fabric to get good stretch, good recovery and good shrinkage. The invention is applicable for all types of fibers material and is not limited in the yarn count. The said invention yarn is woven into fabrics exhibiting the excellent stretch characteristics and functional performance for commercial application.

What is claimed is: 
     
         1 . A ring spun stretch yarn comprising at least two elastomeric filaments with at least two different mean drafts, wherein the mean draft on individual filament is varied and two fibrous sheath of at least one staple fiber, and wherein the elastomeric filaments have a denier from 20 to 140 and said the fibrous sheath has an English cotton yarn count Ne from 4 to 60. 
     
     
         2 . The stretch yarn of  claim 1 , wherein said fibrous sheath comprises natural or synthetic staple fibers, cotton, polyester, rayon, wool, nylon, acrylic or combination thereof. 
     
     
         3 . The stretch yarn of  claim 1 , wherein the mean draft of the elastomeric filament is from 1.05 to 5. 
     
     
         4 . The stretch yarn of  claim 1 , wherein the mean draft is calculated by individual actual draft/time along that elastomeric filament. 
     
     
         5 . The stretch yarn of  claim 1 , wherein the draft/time of the elastomeric filament is controlled by electronic but not limited. 
     
     
         6 . The stretch yarn of  claim 1 , wherein draft on individual filament is varied in the range from ±50% of the mean draft, but not limited to this range. 
     
     
         7 . The stretch yarn of  claim 1 , wherein the elastomeric filament is spandex/elastane/elastomer but not limited. 
     
     
         8 . The stretch yarn of  claim 1 , wherein the elastomeric filament can be at least one type material. 
     
     
         9 . The stretch yarn of  claim 1 , wherein the fibrous sheath can be natural fibers, regenerated fibers, synthetic fibers and a combination thereof. 
     
     
         10 . The stretch yarn of  claim 1 , wherein the stretch yarn can be used in producing slub yarn/normal yarn which can get some special fancy effect. 
     
     
         11 . A woven fabric comprising the stretch yarn of  claim 1  in warp or filling or both. 
     
     
         12 . The woven fabric of  claim 11 , wherein the fabric is denim or piece dyed. 
     
     
         13 . A knitted fabric comprising the stretch yarn of  claim 1 . 
     
     
         14 . A sweater comprising the stretch yarn of  claim 1 .