PROBLEM TO BE SOLVED: To suppress generation of bare on a tread land part.SOLUTION: A tread surface comprises land parts which are partitioned by at least one peripheral groove extending in a tread peripheral direction and tread ends. The land parts comprise respectively plural lateral grooves extending in an inclined state to the tire peripheral direction and sipings. The siping is configured so that, at least one end of it opens to any one of the peripheral groove or the lateral groove. The land parts comprise respectively a spew which is molded via a vent hole of a mold for tire molding. The groove wall forming the siping has a projection molded via a cross vent of a siping formation blade. When the respective spew is disposed on only one side on the land part area having the sipings, with the sipings as a boundary, when length of an extension direction of the siping between an opening end of the siping and the projection adjacent to the opening end, is A, and shortest length between the spew and the projection is B, total sum of length A and length B is less than 20 mm.SELECTED DRAWING: Figure 1

    【課題】トレッド陸部におけるベアの発生を抑制する。【解決手段】トレッドの踏面に、トレッド周方向に延びる少なくとも1本の周方向溝及びトレッド端によって区画される陸部を有し、該陸部に、タイヤ周方向に対し傾斜して延びる横溝と、サイプと、を複数具え、該サイプは少なくとも一方端が前記周方向溝又は前記横溝のいずれかに開口し、前記陸部には、タイヤ成形用金型のベントホールを介して成形されるスピューを有し、前記サイプを形成する溝壁には、サイプ形成用ブレードのクロスベントを介して成形される突起を有するタイヤにおいて、前記スピューが、前記サイプを設けた陸部領域に、該サイプを境として一方側にのみ配置される場合、前記サイプの開口端と該開口端に隣接する前記突起との間の該サイプの延在方向長さをA、当該突起と前記スピューとの間の最短長さをBとしたとき、長さAとBの和が20mm未満である。【選択図】図1


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    Title :

    TIRE, TIRE MOLDING MOLD AND TIRE PRODUCTION METHOD


    Additional title:

    タイヤ、タイヤ成形用金型及びタイヤの製造方法


    Contributors:

    Publication date :

    2016-06-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen / B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B29D PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE , Herstellen besonderer Gegenstände aus Kunststoff oder aus Stoffen in plastischem Zustand



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