Knitted fabric having an excellent wash fastness and light fastness, and a process of preparing for the same

Abstract

The present invention discloses a knitted fabric having excellent wash fastness and light fastness, and a process of preparing for the same. More particularly, the knitted fabric of the present invention has a ultra fine yarn including a dope dyed component selected from the group consisting of carbon black, pigments and dyestuffs on the face and/or back and has a wash fastness of more than level 2-3 and a light fastness of more than level (5). In addition, in the process of the present invention, a sea-island type conjugate fiber is used in which a dope dyed component such as carbon black or the like is contained in a fiber forming component as a face yarn and/or back yarn. The knitted fabric of the present invention is used for materials of artificial leathers or ladies' clothes.

What is claimed is:  
     
         1 . A knitted fabric having excellent wash fastness and light fastness, comprising a ultra fine yarn including a dope dyed component selected from the group consisting of carbon black, pigments and dyestuffs on the face and/or back, wherein the knitted fabric has the wash fastness of more than level 2˜3 and the light fastness of more than level 5.  
     
     
         2 . The knitted fabric of  claim 1 , wherein the dope dyed component content in the ultra fine yarn is 0.1˜15% by weight.  
     
     
         3 . The knitted fabric of  claim 1 , wherein the mono-filament fineness of the ultra fine yarn is 0.001˜0.3 denier.  
     
     
         4 . The knitted fabric of  claim 1 , wherein the dope dyed component includes pigments of black color or dyestuffs of black color.  
     
     
         5 . The knitted fabric of  claim 1 , wherein the knitted fabric is a warp knit fabric which consists of a face weave made of a ultra fine yarn including a dope dyed component and a back weave made of a high shrinkage yarn or synthetic fiber yarn.  
     
     
         6 . The knitted fabric of  claim 1 , wherein the knitted fabric is a warp knit fabric which consists of a face weave made of a ultra fine yarn including a dope dyed component, a back weave made of a high shrinkage yarn or synthetic fiber yarn, and an intermediate weave made of a spandex elastic yarn.  
     
     
         7 . The knitted fabric of  claim 5  or  6 , wherein the high shrinkage yarn or synthetic fiber yarn constituting the back weave contains a dope dyed component selected from the group consisting of carbon black, pigments and dyestuffs.  
     
     
         8 . The knitted fabric of  claim 5  or  6 , wherein the mono-filament fineness of the high shrinkage yarn or synthetic fiber yarn constituting the back weave is 1˜5 denier.  
     
     
         9 . The knitted fabric of  claim 5  or  6 , wherein the ultra fine yarn, shrinkage yarn and synthetic fiber yarn are mainly composed of polyester.  
     
     
         10 . The knitted fabric of  claim 1 , wherein the knitted fabric is a circular knit fabric whose face weave and/or back weave are made of a ultra fine yarn including a dope dyed component or a mixed filament yarn of the ultra fine yarn and a high shrinkage yarn.  
     
     
         11 . The knitted fabric of  claim 10 , wherein the high shrinkage yarn includes the dope dyed component.  
     
     
         12 . The knitted fabric of  claim 10 , wherein the ultra fine yarn and the high shrinkage yarn are mainly composed of polyester.  
     
     
         13 . The knitted fabric of  claim 5 ,  6  or  10 , wherein the boiling water shrinkage rate of the high shrinkage yarn is 15% or more.  
     
     
         14 . A process of preparing a knitted fabric having excellent wash fastness and Light fastness, wherein a sea-island type conjugate fiber consisting of a fiber forming component, which contains a dope dyed component 0.1˜15% by weight selected from the group consisting of carbon black, pigments and dyestuffs, and a dissolution component, which is a easy soluble polymer, is used as face yarn and/or back yarn.  
     
     
         15 . The process of  claim 14 , wherein the knitted fabric is additionally dyed with a dyestuffs having a concentration of 3.0% o.w.f. (based on powdery dyestuffs).  
     
     
         16 . The process of  claim 14 , wherein the mono-filament denier of the fiber forming component in the sea-island type conjugate fiber is 0.001˜0.3 denier.  
     
     
         17 . The process of  claim 14 , wherein the sea-island type conjugate fiber is used as the face yarn and a high shrinkage yarn or synthetic fiber yarn is used as the back yarn.  
     
     
         18 . The process of  claim 14 , wherein the sea-island type conjugate fiber is used as the face yarn, a high shrinkage yarn or synthetic fiber yarn is used as the back yarn and a spandex elastic yarn is used as an intermediate yarn.  
     
     
         19 . The process of  claim 17  or  13 , wherein the mono-filament fineness of the back yarn is 1˜5 denier.  
     
     
         20 . The process of  claim 17  or  18 , wherein the face yarn and back yarn is mainly composed of polyester.