Fiber Bundle for Artificial Hair and Head Decoration Article Comprising the Same

Abstract

To provide fibers for artificial hair prepared under a low nozzle pressure with little gumming, and a fiber bundle for artificial hair having a soft touch close to human hair, while maintaining uniform curling. A fiber bundle for artificial hair comprising fibers (A) having a flexural rigidity of (1.2 to 3.5)×10 −2 N·cm 2 as determined by the KES method and fibers (B) having a flexural rigidity of (0.5 to 1.0)×10 −2 N·cm 2 as determined by the KES method, wherein both of the fibers (A) and the fibers (B) are made of vinyl chloride fibers. The fiber bundle for artificial hair, wherein the content of the fibers (A) is from 30 to 90 mass %, the sectional shape of the fibers (A) is at least one selected from the group consisting of Y-, U- and C-shapes, and the sectional shape of the fibers (B) is a spectacled sectional shape.

1 . A fiber bundle for artificial hair comprising fibers (A) having a flexural rigidity of (1.2 to 3.5)×10 −2  N·cm 2  as determined by the KES method and fibers (B) having a flexural rigidity of (0.5 to 1.0)×10 −2  N·cm 2  as determined by the KES method, wherein both of the fibers (A) and the fibers (B) are made of vinyl chloride fibers. 
   
   
       2 . The fiber bundle for artificial hair according to  claim 1 , wherein the content of the fibers (A) is from 30 to 90 mass %. 
   
   
       3 . The fiber bundle for artificial hair according to  claim 1 , wherein the sectional shape of the fibers (A) is at least one selected from the group consisting of Y-, U- and C-shapes. 
   
   
       4 . The fiber bundle for artificial hair according to  claim 1 , wherein the sectional shape of the fibers (B) is a spectacled sectional shape. 
   
   
       5 . The fiber bundle for artificial hair according to  claim 1 , wherein the vinyl chloride fibers are made of fibers prepared by melt spinning an ethylene/vinyl chloride copolymer resin having an ethylene content of from 0.5 to 3 mass %. 
   
   
       6 . The fiber bundle for artificial hair according to  claim 5 , wherein the viscosity-average polymerization degree of the ethylene/vinyl chloride copolymer resin is from 900 to 2500. 
   
   
       7 . The fiber bundle for artificial hair according to  claim 5 , wherein the vinyl chloride fibers are made of fibers prepared by melt spinning a mixed resin of the ethylene/vinyl chloride copolymer resin and a vinyl chloride resin other than the ethylene/vinyl chloride copolymer resin. 
   
   
       8 . The fiber bundle for artificial hair according to  claim 7 , wherein the content of the vinyl chloride resin in the mixed resin is at most 40 mass %. 
   
   
       9 . The fiber bundle for artificial hair according to  claim 7 , wherein the viscosity-average polymerization degree of the vinyl chloride resin is from 600 to 2,500. 
   
   
       10 . A head decoration article comprising the fiber bundle of artificial hair as defined in  claim 1 .