PROBLEM TO BE SOLVED: To provide an interdental cleaning tool that, even if a wire made of polyethylene and polyvinylidene fluoride, prevents resin from being defectively filled and that further can prevent the wire from falling out.SOLUTION: An interdental cleaning tool of the present invention includes: a pair of support pieces that are arranged with a prescribed space apart a handle part that connects the pair of support pieces and that can be gripped by hand and a wire that extends between the pair of support pieces and that has at least one multi-filament. Each multi-filament is formed by polyethylene or polyvinylidene fluoride. Each support piece is provided with a first face on the mutually opposing side and a second face on the side opposite from the first face. Both ends of the wire each penetrate the support pieces between the first and the second faces. The support pieces and the handle part are formed by polystyrene with melt mass flow rate not less than 7 g/10 min.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】ポリエチレンやポリフッ化ビニリデン製の線材を用いても、樹脂の充填不良を防止し、ひいては線材の抜けを防止することができる歯間清掃具を提供する。【解決手段】本発明に係る歯間清掃具は、所定間隔をおいて配置される一対の支持片と、前記一対の支持片を連結し、手で把持可能なハンドル部と、前記一対の支持片の間で延びる、少なくとも1つのマルチフィラメントを有する線材と、を備え、前記各マルチフィラメントは、ポリエチレンまたはポリフッ化ビニリデンにより形成され、前記各支持片は、互いに対向する側の第1面と、当該第1面とは反対側の第2面とを有し、前記線材の両端部は、それぞれ、前記各支持片を前記第1面と第2面との間で貫通し、前記支持片及びハンドル部は、メルトマスフローレートが7g/10min以上のポリスチレンによって形成されている。【選択図】図1
