Artificial hair and manufacturing method of the same

Abstract

Artificial hair having a look and feel that both are close in character to that of natural human hair, compared with artificial hair made from polyamide fibers, polyester fibers, acrylic fibers, etc., and which holds that character over time. By means of artificial hair composed of monofilaments containing poly(trimethylene terephthalate), in particular, by means of artificial hair composed of monofilaments containing poly(trimethylene terephthalate) having a denier of 22 to 333 dtex, a melting point of 225 to 235° C., a glass transition temperature of 45 to 80° C., the physical properties of elastic recovery, strength, stretch, and texture resemble natural human hair, and the occurrence of frizzes and gloss is kept under control.

1 . Artificial hair composed of monofilaments containing poly(trimethylene terephthalate).  
   
   
       2 . Artificial hair set forth in  claim 1 , being monofilaments having a denier of 22 to 333 decitex, a melting point of 225 to 235° C., and a glass transition temperature of 45 to 80° C.  
   
   
       3 . A method of manufacturing artificial hair, characterized in that in manufacturing artificial-hair monofilaments from a polymer containing poly(trimethylene terephthalate), the melt-spinning temperature at which the polymer containing poly(trimethylene terephthalate) spins is 240 to 320° C.  
   
   
       4 . An artificial-hair manufacturing method as set forth in  claim 3 , characterized in that the draw ratio when the monofilaments are extruded is 2.0 to 4.0 times.  
   
   
       5 . An artificial-hair manufacturing method in  claim 4 , characterized in that the temperature in extruding the monofilaments is 35 to 100° C. in the draw zone.