Fiber for artificial hair and hair ornament product including same

Abstract

The present invention relates to a fiber for artificial hair having a void in a center of a fiber cross section. A ratio of an area of the void to an entire area of the fiber cross section is 5% to 50%. The fiber cross section has a flat multilobed shape, and the void has a first side and a second side that are inclined 70 to 110 degrees relative to a major axis of the fiber cross section. The present invention also relates to hair ornament products including the above fiber for artificial hair. Thus, the present invention provides a fiber for artificial hair having a favorable curl setting property when curling with a hair iron and a favorable combing property after curling with a hair iron, and hair ornament products including the same.

1 . A fiber for artificial hair having a hollow in a center of a fiber cross section,
 wherein a ratio of an area of the hollow to an entire area of the fiber cross section is 5% to 50%,   the fiber cross section has a flat multilobed shape, and   the hollow has a first side and a second side that are inclined 70 to 110 degrees relative to a major axis of the fiber cross section.   
     
     
         2 . The fiber for artificial hair according to  claim 1 , wherein the fiber cross section has a flat two-lobed shape comprising two circles or two ellipses connected via recessed portions. 
     
     
         3 . The fiber for artificial hair according to  claim 1 , wherein a ratio of a length of the major axis to a length of a first minor axis in the fiber cross section is in a range from 1.2 to 3.0. 
     
     
         4 . The fiber for artificial hair according to  claim 1 , wherein the first side and the second side of the hollow have a length of 5 μm or more. 
     
     
         5 . The fiber for artificial hair according to  claim 1 , wherein an average value of a maximum straight line distance and a minimum straight line distance between the first side and the second side of the hollow is in a range from 20% to 180% relative to an average value of a maximum straight line distance and a minimum straight line distance between the first minor axis and a second minor axis in the fiber cross section. 
     
     
         6 . The fiber for artificial hair according to  claim 1 , wherein the fiber for artificial hair comprises at least one kind of resin composition selected from the group comprising a polyester-based resin composition, a polyamide-based resin composition, a vinyl chloride-based resin composition, a modacrylic-based resin composition, a polycarbonate-based resin composition, and a polyphenylene sulfide-based resin composition. 
     
     
         7 . The fiber for artificial hair according to  claim 1 ,
 wherein the fiber for artificial hair comprises a polyester-based resin composition comprising 100 parts by weight of a polyester resin and 5 to 40 parts by weight of a brominated epoxy-based flame retardant, and   the polyester resin is at least one selected from the group comprising polyalkylene terephthalate and a copolymerized polyester comprising polyalkylene terephthalate as a main component.   
     
     
         8 . The fiber for artificial hair according to  claim 1 , wherein the fiber for artificial hair is curved by gear crimping. 
     
     
         9 . A hair ornament product comprising the fiber for artificial hair according to  claim 1 . 
     
     
         10 . The hair ornament product according to  claim 9 , wherein the hair ornament product is any one selected from the group comprising a hair wig, a hairpiece, weaving hair, a hair extension, braided hair, a hair accessory, and doll hair. 
     
     
         11 . The hair ornament product according to  claim 9  or  10 , wherein the hair ornament product is heat-treated at a temperature in a range from 120° C. to 240° C. with a hair iron. 
     
     
         12 . The fiber for artificial hair according to  claim 2 , wherein a ratio of a length of the major axis to a length of a first minor axis in the fiber cross section is in a range from 1.2 to 3.0. 
     
     
         13 . The fiber for artificial hair according to  claim 2 , wherein the first side and the second side of the hollow have a length of 5 μm or more. 
     
     
         14 . The fiber for artificial hair according to  claim 2 , wherein an average value of a maximum straight line distance and a minimum straight line distance between the first side and the second side of the hollow is in a range from 20% to 180% relative to an average value of a maximum straight line distance and a minimum straight line distance between the first minor axis and a second minor axis in the fiber cross section. 
     
     
         15 . The fiber for artificial hair according to  claim 2 , wherein the fiber for artificial hair comprises at least one kind of resin composition selected from the group comprising a polyester-based resin composition, a polyamide-based resin composition, a vinyl chloride-based resin composition, a modacrylic-based resin composition, a polycarbonate-based resin composition, and a polyphenylene sulfide-based resin composition. 
     
     
         16 . The fiber for artificial hair according to  claim 2 ,
 wherein the fiber for artificial hair comprises a polyester-based resin composition comprising 100 parts by weight of a polyester resin and 5 to 40 parts by weight of a brominated epoxy-based flame retardant, and   the polyester resin is at least one selected from the group comprising polyalkylene terephthalate and a copolymerized polyester comprising polyalkylene terephthalate as a main component.   
     
     
         17 . The fiber for artificial hair according to  claim 2 , wherein the fiber for artificial hair is curved by gear crimping.