PROBLEM TO BE SOLVED: To provide an interdental cleaning tool and production method thereof, capable of efficiently preventing occurrence of breakage of a core base material part when a cleaning part is inserted into a space between the teeth, and during cleaning the space between the teeth, without reducing productivity of the interdental cleaning tool with a simple structure.SOLUTION: There is provided an interdental cleaning tool in which a cleaning part 2 for interdental cleaning is constituted by a core base material part 12 and a cleaning soft part 21. A first side part and a second side part of the cleaning part 2 comprise, respectively, plural cleaning recess parts 14 penetrating the cleaning soft part 21 and forming core base material part recess parts 14a on the core base material part 12, with intervals in an axial direction of the cleaning part 2. Out of plural sets of cleaning part recess parts 14 in which, the recess parts on the first side part and on the second side part are pairs respectively, a center segment in a depth direction passing centers of at least one set of cleaning part recess parts 14, is formed with an angle θ2 in a peripheral direction of the cleaning part 2 with respect to a mold opening/closing direction of a mold for molding the cleaning soft part 21.SELECTED DRAWING: Figure 6COPYRIGHT: (C)2017,JPO&INPIT【課題】簡単な構成で、歯間清掃具の生産性を低下させることなく、歯間への挿入時や歯間清掃時における芯基材部の折れの発生を効果的に防止し得る、歯間清掃具及びその製造方法を提供する。【解決手段】芯基材部12と清掃用軟質部21とで歯間清掃用の清掃部2を構成した歯間清掃具であって、清掃部2の第1側部と第2側部のそれぞれに、清掃用軟質部21を貫通して、芯基材部12に芯基材部凹部14aを形成する清掃部凹部14を、清掃部2の軸方向に間隔をあけて複数個形成し、第1側部と第2側部とで対をなす複数組の清掃部凹部14のうちの少なくとも1組の清掃部凹部14の中心を通る深さ方向の中心線分を、清掃用軟質部21を成形する金型の型開閉方向に対して、清掃部2の周方向に角度θ2を付けて形成した。【選択図】図6
