| 摘要 |
PROBLEM TO BE SOLVED: To provide a toothbrush which can be easily improved in design and has excellent resistance against chemicals and fatigue resistance against repeated stress. SOLUTION: This tooth brush is constituted of a bristled part 11 in which a plurality of bristle bundles 14 are planted, a handle part 12 to be held by a hand, and a neck part 13 to connect the bristle part 11 with the handle part 12. The bristled part 11, the neck part 13, and the mount part 15 of the handle part 12 are integrally molded using opaque resin 16. Transparent resin 17 with light transmittance over 70% is buried in the mount 15 of the handle part 12 and is exposed on the surface of the handle part 12. The opaque resin is polyolefin based resin, for instance such as polypropylene, and the transparent resin is saturated polyester resin, for instance such as polyethylene terephthalate. COPYRIGHT: (C)2003,JPO
|
