Yarn and fabric

Abstract

A yarn that includes a fiber that generates a potential on a surface thereof by energy from the outside; and a grounded conductive core material covered with the fiber. The yarn generates a potential of 0.1 V or more on a surface thereof when measured under the following conditions: the yarn is stretched by a predetermined amount in a uniaxial direction; and the potential is measured with an electric force microscope.

1 . A yarn comprising:
 a fiber that generates a potential on a surface thereof by energy from the outside; and   a grounded conductive core material covered with the fiber, wherein   the yarn generates a potential of 0.1 V or more on a surface thereof when measured under the following conditions:   the yarn is stretched by a predetermined amount in a uniaxial direction, and   the potential of the yarn is measured with an electric force microscope.   
     
     
         2 . The yarn according to  claim 1 , wherein the predetermined amount is a strain of 0.1% or more. 
     
     
         3 . The yarn according to  claim 2 , wherein the strain is 0.5% or more. 
     
     
         4 . The yarn according to  claim 1 , wherein the potential is 0.3 V or more. 
     
     
         5 . The yarn according to  claim 1 , wherein the potential is 1.0 V or more. 
     
     
         6 . The yarn according to  claim 1 , wherein a thickness of the yarn is 0.005 to 10 dtex. 
     
     
         7 . The yarn according to  claim 1 , wherein a fiber strength of the yarn is 1 to 5 cN/dtex. 
     
     
         8 . The yarn according to  claim 1 , wherein the fiber contains polylactic acid. 
     
     
         9 . The yarn according to  claim 8 , wherein a crystallinity of the polylactic acid is 15 to 55%. 
     
     
         10 . The yarn according to  claim 1 , wherein the fiber is twisted. 
     
     
         11 . The yarn according to  claim 10 , wherein a number of twists of the fiber is 500 to 3000 T/m. 
     
     
         12 . The yarn according to  claim 10 , wherein an average twist angle of the yarn is 10 to 50°. 
     
     
         13 . The yarn according to  claim 1 , wherein the yarn satisfies the following requirements:
 a fiber strength is 1 to 5 cN/dtex;   elongation is 10 to 50%; and   crystallinity is 15 to 55%.   
     
     
         14 . A fabric comprising:
 a fiber that generates a potential on a surface thereof by energy from the outside; and   a grounded conductive core material covered with the fiber, wherein   the fabric generates a potential of 0.1 V or more on a surface thereof when measured under the following conditions:   the fabric is stretched by a predetermined amount in a uniaxial direction; and   a surface potential of the fabric is measured with an electric force microscope.   
     
     
         15 . The fabric according to  claim 14 , wherein the predetermined amount is a strain of the fabric of 0.1% or more. 
     
     
         16 . The fabric according to  claim 14 , wherein the fiber contains polylactic acid. 
     
     
         17 . The fabric according to  claim 14 , wherein the fiber is twisted. 
     
     
         18 . The fabric according to  claim 17 , wherein a number of twists of the fiber is 500 to 3000 T/m. 
     
     
         19 . The fabric according to  claim 17 , wherein an average twist angle of the yarn is 10 to 50°. 
     
     
         20 . The fabric according to  claim 14 , wherein the fiber satisfies the following requirements:
 a fiber strength is 1 to 5 cN/dtex;   elongation is 10 to 50%; and   crystallinity is 15 to 55%.