To provide a manufacturing technique for a pneumatic tire, by which excellent grip performance, particularly, grip performance on ice, from the beginning of mounting the tire can be exhibited without performing a fine recess and projection formation process on a mold.SOLUTION: In a pneumatic tire, a tread portion is formed of: a tread body portion composed of a tread rubber composition; and a surface layer portion composed of a rubber composition higher in polymer concentration than the tread rubber composition of the tread body portion, the surface layer portion containing a water-soluble inorganic filler. The pneumatic tire is a studless tire for a passenger car, in which is the tread portion is formed of a rubber composition containing a water-soluble inorganic filler. A manufacturing method for a pneumatic attire includes an inorganic filler spraying step of, between a molding step of molding a green tire and a vulcanizing step of vulcanizing the molded green tire, spraying a water-soluble inorganic filler to a surface of a tread portion of the molded green tire.SELECTED DRAWING: None

    【課題】金型に微細な凹凸加工を施すことなく、装着初期から優れたグリップ性能、特に、氷上グリップ性能を発揮させることができる空気入りタイヤの製造技術を提供する。【解決手段】トレッド部が、トレッドゴム組成物から構成されたトレッド本体部と、トレッド本体部のトレッドゴム組成物よりもポリマー濃度が高いゴム組成物から構成された表層部とにより形成されており、表層部に、水溶性の無機フィラーが含有されている空気入りタイヤ。トレッド部が水溶性の無機フィラーを含有するゴム組成物から形成された乗用車用のスタッドレスタイヤである空気入りタイヤ。生タイヤの成形を行う成形工程と、成形された生タイヤの加硫を行う加硫工程との間に、水溶性の無機フィラーを、成形された生タイヤのトレッド部の表面に散布する無機フィラー散布工程を備えている空気入りタイヤの製造方法。【選択図】なし


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    Titel :

    PNEUMATIC TIRE AND MANUFACTURING METHOD THEREFOR


    Weitere Titelangaben:

    空気入りタイヤとその製造方法


    Beteiligte:
    IZUMO SUGURU (Autor:in) / KAWAMURA YUKINOBU (Autor:in)

    Erscheinungsdatum :

    2021-11-25


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen / B29D PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE , Herstellen besonderer Gegenstände aus Kunststoff oder aus Stoffen in plastischem Zustand / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen



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