Dope dyed polyethylene yarn and functional fabric including the same

Abstract

The present invention relates to a dope dyed polyethylene yarn and a functional fabric including the same, and more particularly, to a dope dyed polyethylene yarn having excellent color uniformity and a functional fabric including the same. A dope dyed polyethylene yarn according to the present invention contains a pigment, wherein L*, a* and b* measured under the following measurement condition satisfy the following expression: [Measurement condition] a measurement region is formed by winding the dope dyed polyethylene yarn around a planar substrate, computer color matching (CCM) is measured in the measurement region, and the CCM is measured at least n times (n is a natural number of 50 or more) every time the dope dyed polyethylene yarn is wound around the substrate 70 turns, ( C max - C min ) / C aver × 1 ⁢ 0 ⁢ 0 ≤ 1 ⁢ 5 [ Expression ] wherein C max , C min , and C aver represent maximum, minimum, and average values of any one selected from L*, a*, and b*, respectively.

1 .A dope dyed polyethylene yarn comprising a pigment, wherein L*, a* and b* measured under the following measurement condition satisfy the following expression:
    [Measurement condition]   a measurement region is formed by winding the dope dyed polyethylene yarn around a planar substrate, computer color matching (CCM) is measured in the measurement region, and the CCM is measured at least n times (n is a natural number of 50 or more) every time the dope dyed polyethylene yarn is wound around the substrate 70 turns,   
       
         
           
             
               
                 
                   
                     
                       
                         ( 
                         
                           
                             C 
                             max 
                           
                           - 
                           
                             C 
                             min 
                           
                         
                         ) 
                       
                       / 
                       
                         C 
                         aver 
                       
                       × 
                       1 
                       ⁢ 
                       0 
                       ⁢ 
                       0 
                     
                     ≤ 
                     
                       1 
                       ⁢ 
                       5 
                     
                   
                 
                 
                   
                     [ 
                     Expression 
                     ] 
                   
                 
               
             
           
         
         wherein C max , C min , and C aver  represent maximum, minimum, and average values of any one selected from L*, a*, and b*, respectively. 
       
     
     
         2 . The dope dyed polyethylene yarn of claim  1 , wherein when the CCM of the dope dyed polyethylene yarn is measured, a standard deviation of values of L* is 3 or less. 
     
     
         3 . The dope dyed polyethylene yarn of claim  1 , wherein the pigment is contained in an amount of  0 .00005 to 1 wt % with respect to a total weight of the dope dyed polyethylene yarn. 
     
     
         4 .The dope dyed polyethylene yarn of claim  1 , wherein a degree of crystallinity of the dope dyed polyethylene yarn is 60 to 80%. 
     
     
         5 .The dope dyed polyethylene yarn of claim  1 , wherein the dope dyed polyethylene yarn has an initial modulus of 10 to 300 cN/dtex and a strength of 1.5 to 20 g/d when measured according to ASTM D2256. 
     
     
         6 .The dope dyed polyethylene yarn of claim  1 , wherein the dope dyed polyethylene yarn has a melt index (MI, @190° C.) of 0.5 to 22 g/10 min when measured according to ASTM D1238. 
     
     
         7 .The dope dyed polyethylene yarn of claim  1 , wherein the dope dyed polyethylene yarn has a dry heat shrinkage rate (@100° C.) of 2 to 15% when measured according to ASTM D4974-04. 
     
     
         8 .A functional fabric manufactured using the dope dyed polyethylene yarn of claim  1 . 
     
     
         9 .The functional fabric of claim  8 , wherein the functional fabric has a contact cooling sensation of 0.1 to 0.3 W/cm 2  when measured by bringing a heat plate (T-box) at 30±2° C. into contact with the functional fabric at 20±2° C. at 20±2° C. and 65±2% R.H. 
     
     
         10 .The functional fabric of claim  8 , wherein the functional fabric has a thermal conductivity in a thickness direction of 0.05 to 0.25 W/mK when measured by bringing a heat source plate (BT-box) at 30±2° C. into contact with the functional fabric at 20±2° C. at 20±2° C. and 65±2% R.H.