Fiber for artificial hair, and hair accessory formed from same

Abstract

The present invention relates to a polyvinyl chloride-based resin fiber having a shrinkage stress of 70 μN/dtex or less at 130° C. When fiber bundles for artificial hair which includes 20 to 100% by weight of this polyvinyl chloride-based resin fiber and 0 to 80% by weight of a thermoplastic resin fiber having a Young's modulus of 4 to 9 GPa and a shrinkage percentage of 10% or less at 130° C. and having a composition including no polyvinyl chloride-based resin are processed, a fiber for artificial hair and an artificial hair product having an excellent styling property and texture similar to those of human hair can be obtained.

1 . A polyvinyl chloride-based resin fiber which has a shrinkage stress of 70 μN/dtex or less at 130° C. 
     
     
         2 . The polyvinyl chloride-based resin fiber according to  claim 1 , wherein the shrinkage stress is 50 μN/dtex or less at 130° C. 
     
     
         3 . The polyvinyl chloride-based resin fiber according to  claim 2 , wherein the shrinkage stress is 40 μN/dtex or less at 130° C. 
     
     
         4 . The polyvinyl chloride-based resin fiber according to  claim 1 , wherein the polyvinyl chloride-based resin fiber is a resin fiber including at least one resin selected from the group consisting of a homopolymer resin of vinyl chloride, a copolymer resin of vinyl chloride and a vinyl ester, a copolymer resin of vinyl chloride and an acrylic ester, a copolymer resin of vinyl chloride and an olefin, and a copolymer resin of a vinyl chloride-acrylonitrile. 
     
     
         5 . The polyvinyl chloride-based resin fiber according to  claim 1 , wherein the polyvinyl chloride-based resin fiber is a polyvinyl chloride-based resin fiber for artificial hair. 
     
     
         6 . A fiber bundle for artificial hair comprising 20 to 100% by weight of the polyvinyl chloride-based resin fiber according to  claim 1 , and 0 to 80% by weight of a thermoplastic resin fiber having a composition including no polyvinyl chloride-based resin. 
     
     
         7 . The fiber bundle for artificial hair according to  claim 6 , wherein the thermoplastic resin fiber has a Young's modulus of 4 to 9 GPa. 
     
     
         8 . The fiber bundle for artificial hair according to  claim 6 , wherein the thermoplastic resin fiber has a shrinkage percentage of 10% or less at 130° C. 
     
     
         9 . The fiber bundle for artificial hair according to  claim 6 , wherein the polyvinyl chloride-based resin fiber has a shrinkage percentage at 130° C., which is not lower than the shrinkage percentage at 130° C. of the thermoplastic resin fiber. 
     
     
         10 . The fiber bundle for artificial hair according to  claim 9 , wherein a difference between the shrinkage percentage at 130° C. of the polyvinyl chloride-based resin fiber and the shrinkage percentage at 130° C. of the thermoplastic resin fiber is 6% or less. 
     
     
         11 . The fiber bundle for artificial hair according to  claim 6 , wherein the thermoplastic resin fiber is a resin fiber including at least one resin selected from the group consisting of an acrylonitrile-based resin, a modacrylic resin, a polyolefin-based resin, a polyester-based resin, a polyamide-based resin, a polyimide-based resin, a polyether-imide-based resin, a polyamide-imide-based resin, a polyoxymethylene-based resin, a polyether-ketone-based resin, a polycarbonate-based resin, a polysulfone-based resin, a polyether-sulfone-based resin, a polyphenylene-ether-based resin, a polyphenylene-sulfide-based fiber, and a Teflon® resin. 
     
     
         12 . The fiber bundle for artificial hair according to  claim 6 , wherein the polyvinyl chloride-based resin fiber and the thermoplastic resin fiber includes an amino-modified silicone compound. 
     
     
         13 . The fiber bundle for artificial hair according to  claim 6 , wherein the polyvinyl chloride-based resin fiber includes a polyalkylene oxide-based compound having a weight average molecular weight of 2000 to 25000 in a content of 0.07 to 0.5 omf %. 
     
     
         14 . The fiber bundle for artificial hair according to  claim 6 , wherein the polyvinyl chloride-based resin fiber includes a silicone-based compound in a content of 0 to 0.5 omf %. 
     
     
         15 . An artificial hair product obtained by processing the fiber bundle for artificial hair according to  claim 6 . 
     
     
         16 . The artificial hair product according to  claim 15 , wherein the process is performed at a temperature of 95 to 130° C.