| 摘要 |
To obtain a filament for cosmetic brush constituted by a polyester resin filament having many projections over its entire surface, the cosmetic filament proposed by the present invention is characterized in that: the polyester resin is polytrimethylene terephthalate and/or polybutylene terephthalate; the polyester resin contains glass particles of I to 2 µm in average particle size by 0.3 to 1.0 percent by weight as the inorganic particles; the thermal conductivity of the glass particle is in a range of 4 to 6 times that of the resin; and projections are formed over the entire surface of the cosmetic filament by the glass particles covered with the resin. |
