Thread

Abstract

A thread that includes a first fiber having at least one groove extending in a length direction thereof; and at least one second fiber constructed to generate a potential by external energy. The second fiber is disposed in a region corresponding to the groove of the first fiber such that a space is between the groove of the first fiber and the second fiber.

1 . A thread comprising:
 a first fiber having at least one groove extending in a length direction thereof; and   at least one second fiber constructed to generate a potential by external energy,   the second fiber disposed in a region corresponding to the groove of the first fiber such that a space is between the groove of the first fiber and the second fiber.   
     
     
         2 . The thread according to  claim 1 , wherein a cross section of the space between the first fiber and the second fiber is smaller than a cross section of the thread. 
     
     
         3 . The thread according to  claim 1 , wherein a shape of the groove of the first fiber corresponds to a shape along a surface of the second fiber. 
     
     
         4 . The thread according to  claim 1 , wherein a shape of the groove of the first fiber does not correspond to a shape along a surface of the second fiber. 
     
     
         5 . The thread according to  claim 1 , wherein the first fiber and the second fiber are modified cross-section fibers, the second fiber has at least one protrusion extending in the length direction thereof, and the second fiber is disposed such that the protrusion engages with the groove of the first fiber. 
     
     
         6 . The thread according to  claim 1 , wherein the first fiber has a lower elastic modulus than the second fiber. 
     
     
         7 . The thread according to  claim 1 , wherein the first fiber has a higher coefficient of static friction than the second fiber. 
     
     
         8 . The thread according to  claim 1 , wherein an opening width of the groove substantially matches a diameter of the second fiber. 
     
     
         9 . The thread according to  claim 1 , wherein an opening width of the groove is larger than a diameter of the second fiber. 
     
     
         10 . The thread according to  claim 1 , wherein the second fiber contains a polylactic acid. 
     
     
         11 . The thread according to  claim 1 , wherein the first fiber is longer than the second fiber. 
     
     
         12 . The thread according to  claim 1 , wherein the first fiber is shorter than the second fiber. 
     
     
         13 . The thread according to  claim 1 , wherein the first fiber and the second fiber are twisted together. 
     
     
         14 . The thread according to  claim 1 , wherein the first fiber has a plurality of grooves extending in the length direction thereof; and a plurality of second fibers, a respective second fiber of the plurality of second fibers being disposed in a region corresponding to a respective groove of the plurality of grooves of the first fiber. 
     
     
         15 . The thread according to  claim 1 , wherein a sectional shape of the first fiber is a cross shape, a star polygon, or a concave polygon. 
     
     
         16 . The thread according to  claim 1 , wherein a cross section of the at least one groove is V-shaped, and a cross section of the at least one second fiber is circular. 
     
     
         17 . The thread according to  claim 1 , wherein the thread comprises a plurality of the first fibers and a plurality of the second fibers arranged to surround the plurality of first fibers. 
     
     
         18 . The thread according to  claim 1 , wherein both the first fiber and the second fiber are constructed to generate a potential by external energy. 
     
     
         19 . The thread according to  claim 1 , wherein the first fiber and the second fiber have the same sectional shape. 
     
     
         20 . The thread according to  claim 1 , wherein the at least one groove is parallel to the length direction of the first fiber.