| 摘要 |
PROBLEM TO BE SOLVED: To provide an oral cavity cleaning tool having brush bristles used as an oral cavity cleaning tool such as a toothbrush or an interdental brush, in which flexing recovering characteristics or flexibility of polytrimethylene terephthalate is not impaired, and fracture of the brush bristles is prevented even if it is used for a long period of time. SOLUTION: The brush bristles 4 are formed of synthetic resin monofilament composed of 40-60 wt.% of polytrimethylene terephthalate and other polyester resin having higher rigidity, preferably polybutylene terephthalate. The brush bristles are planted at least in part of bristle planting holes 3 provided on a bristle planting base 2 of a handle 1. COPYRIGHT: (C)2006,JPO&NCIPI
|
