| 摘要 |
The present invention relates to high-reflection toothbrush bristles including a reflection bead inside thereof. The concentration of the beads increases from the inside to the outside with respect to a cross-section vertical to a longitudinal direction. The present invention satisfies chemical formula 1. According to the present invention, an advanced filament having excellent scattering properties can be provided by including high-reflection beads inside thereof. Also, the diameters of the beads can be adjusted according to spinning requirements, and the cut of filaments can be prevented by insertion of the beads. In the chemical formula 1, ns is the refractive rate of the beads, and nc is the refractive index of the filaments. |
