Filament for artificial hair, and artificial hair product

Abstract

A filament for artificial hair is excellent in terms of volume and luster and not subject to yarn cracking or yarn breakage. The filament is a filament of a thermoplastic resin, its shape of a cross section in a direction perpendicular to a fiber axis is a multilobal shape having three or more interlobe gap regions, widths W 2 of the interlobe gap regions are 10 to 60% of a width W 1 of the filament, and depths H 2 of the interlobe gap regions are 5 to 30% of a height H 1 of the filament.

1 - 5 . (canceled) 
     
     
         6 . A filament for artificial hair which is a filament comprising a thermoplastic resin and whose cross section in a direction perpendicular to a fiber axis is of a multilobal shape having three or more interlobe gap regions, wherein widths of the interlobe gap regions are 10 to 60% of a width of the filament and depths of the interlobe gap regions are 5 to 30% of a height of the filament. 
     
     
         7 . The filament according to  claim 6 , wherein the number of lobe regions in the multilobal shape is 3 to 8. 
     
     
         8 . The filament according to  claim 6 , wherein fineness of a single filament is 20 to 150 dtex. 
     
     
         9 . The filament according to  claim 6 , wherein the thermoplastic resin is at least one selected from the group consisting of a polyester resin, a polyamide resin, an acrylic resin, a polyvinyl chloride resin, a polyacrylonitrile resin, a polyphenylene sulfide resin, and a cellulose resin. 
     
     
         10 . An artificial hair product in which the filament according to  claim 6  comprises at least a part of material for hair. 
     
     
         11 . The filament according to  claim 7 , wherein fineness of a single filament is 20 to 150 dtex. 
     
     
         12 . The filament according to  claim 7 , wherein the thermoplastic resin is at least one selected from the group consisting of a polyester resin, a polyamide resin, an acrylic resin, a polyvinyl chloride resin, a polyacrylonitrile resin, a polyphenylene sulfide resin, and a cellulose resin. 
     
     
         13 . The filament according to  claim 8 , wherein the thermoplastic resin is at least one selected from the group consisting of a polyester resin, a polyamide resin, an acrylic resin, a polyvinyl chloride resin, a polyacrylonitrile resin, a polyphenylene sulfide resin, and a cellulose resin. 
     
     
         14 . An artificial hair product in which the filament according to  claim 7  comprises at least a part of material for hair. 
     
     
         15 . An artificial hair product in which the filament according to  claim 8  comprises at least a part of material for hair. 
     
     
         16 . An artificial hair product in which the filament according to  claim 9  comprises at least a part of material for hair.