Method for producing a fiber for an artificial hair by polyvinyl chloride/acryl-copolymer blends

Abstract

The present invention relates to a method for producing a fiber for an artificial hair comprising: (a) pre-mixing a polyvinyl chloride resin mixture which contain 90 to 96% by weight of a polyvinyl chloride resin, 3 to 7% by weight of a stabilizer and 1 to 3% by weight of a lubricant at 90 to 140° C., mixing 20 to 80% by weight of a polyvinyl chloride resin mixture and 20 to 80% by weight of acryl-copolymer to obtain a polyvinyl chloride/acryl-copolymer blends composition; (b) melt-extruding said mixed resin composition through an extruder at 100 to 210° C. to obtain a pellet; (c) inputting said pellet into an spinning machine, melt-spinning at 150 to 220° C. to obtain filament; (d) drawing said melt-spinned filament to have a fineness of 20 to 100 denier; and (e) passing said drawn filament through heat-setting machine of 100 to 150° C. to fix the property of the filament.

1 . A method for producing a fiber for an artificial hair comprising the steps of: 
 (a) pre-mixing a polyvinyl chloride resin mixture which contains 90 to 96% by weight of a polyvinyl chloride resin, 3 to 7% by weight of a stabilizer and 1 to 3% by weight of a lubricant at 90 to 140° C., mixing 20 to 80% by weight of said polyvinyl chloride resin mixture and 20 to 80% by weight of acryl-copolymer to obtain a polyvinyl chloride/acryl-copolymer blends composition;    (b) melt-extruding said mixed resin composition through an extruder at 100 to 210° C. to obtain a pellet;    (c) inputting said pellet into a spinning machine, melt-spinning at 150 to 220° C. to obtain filament;    (d) drawing said melt-spinned filament to have a fineness of 20 to 100 denier; and    (e) passing said drawn filament through heat-setting machine of 100 to 150° C. to fix the property of the filament.    
   
   
       2 . The method for producing a fiber for an artificial hair according to  claim 1 , wherein said polyvinyl chloride resin mixture further comprises a dullustering agent, a feel controller, a pigment, a ultraviolet stabilizer or a light stabilizer.  
   
   
       3 . The method for producing a fiber for an artificial hair according to  claim 1 , wherein said polyvinyl chloride resin in the polyvinyl chloride resin mixture is polyvinyl chloride resin alone or mixed resin of polyvinyl chloride resin and chlorinated polyvinyl chloride resin.  
   
   
       4 . The method for producing a fiber for an artificial hair according to  claim 3 , wherein said chlorinated polyvinyl chloride resin comprises an amount of 10 to 50% by weight based on the polyvinyl chloride resin.  
   
   
       5 . The method for producing a fiber for an artificial hair according to  claim 1 , wherein said acryl-copolymer is selected from a group consisting of ABS, SAN, transparent ABS, heat resistant SAN and specially modified SAN.  
   
   
       6 . The method for producing a fiber for an artificial hair according to  claim 1 , wherein said acryl-copolymer has a specific weight of 1.21 or below and a heat resistance of 85 or more.  
   
   
       7 . The method for producing a fiber for an artificial hair according to  claim 1 , wherein said stabilizer is organic tin stabilizer, metal based stabilizer or mixture thereof.  
   
   
       8 . The method for producing a fiber for an artificial hair according to  claim 1 , wherein said lubricant is a mixture of an external lubricant selected from a group consisting of oxidized polyethylene wax, wax, polyethylene wax, stearic acid, and an internal lubricant selected from a group consisting of high purity alcohol, low fatty acid and metal stearic acid.  
   
   
       9 . The method for producing a fiber for an artificial hair according to  claim 1 , and further comprising a heat cask is equipped below a nozzle of said spinning machine to decrease melt viscosity of said filament which passes said spinning machine.  
   
   
       10 . A fiber for an artificial hair produced by the method of claims  1 ,  2 ,  3 ,  4 ,  5 ,  6 ,  7 ,  8 , or  9 .