To provide a snow tire having excellent wet grip performance and an excellent rolling resistance.SOLUTION: A tread 10 comprises: a first tread cap layer 3 for contacting a road during driving; and a second tread cap layer 4 arranged radially inside of the first tread cap layer. As for a rebound resilience measured according to DIN 53512, a rebound resilience of a first rubber composition of the first tread cap layer at a temperature of 0°C is within a range of 10% to 25%, and a rebound resilience of the second rubber composition of the second tread cap layer is within a range of 20% to 35%, and the rebound resilience of the first rubber composition is at least 5% lower than the rebound resilience of the second rubber composition. Furthermore, a rebound resilience of the first rubber composition measured at a temperature of 100°C is within a range of 45% to 65%, and a rebound resilience of the second rubber composition is within a range of 60% to 75%, and the rebound resilience of the second rubber composition is at least 3% higher than the rebound resilience of the first rubber composition.SELECTED DRAWING: Figure 1

    【課題】良好な湿潤グリップと転がり抵抗を伴うスノータイヤを提供する。【解決手段】トレッド10が、運転時に道路に接する第1トレッドキャップ層3とその半径方向内側に配置された第2トレッドキャップ層4を含む。DIN53512に従って測定された反発弾性において、第1トレッドキャップ層の第1ゴム組成物の0℃の反発弾性は、10%~25%の範囲内にあり、第2トレッドキャップ層の第2ゴム組成物の反発弾性は、20%~35%の範囲内にあり、第1ゴム組成物の反発弾性は、第2ゴム組成物の反発弾性よりも少なくとも5%低い。さらに、100℃の温度で測定した第1ゴム組成物の反発弾性は、45%~65%の範囲内にあり、第2ゴム組成物の反発弾性は、60%~75%の範囲内にあり、第2ゴム組成物の反発弾性は、第1ゴム組成物の反発弾性よりも少なくとも3%高い。【選択図】図1


    Access

    Download


    Export, share and cite



    Title :

    TIRE HAVING MULTILAYER TREAD CAP


    Additional title:

    多層トレッドキャップを有するタイヤ



    Publication date :

    2022-01-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen / 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



    Tire having a multilayer tread cap

    JACOBY CLAUDE CHARLES / BINDNER OLIVIER FRANCIS / OCAMPO FABIEN et al. | European Patent Office | 2023

    Free access

    TIRE HAVING A MULTILAYER TREAD CAP

    JACOBY CLAUDE CHARLES / BINDNER OLIVIER FRANCIS / OCAMPO FABIEN et al. | European Patent Office | 2021

    Free access

    A TIRE HAVING A MULTILAYER TREAD

    JACOBY CLAUDE CHARLES / BINDNER OLIVIER FRANÇIS / OCAMPO FABIEN et al. | European Patent Office | 2023

    Free access

    TIRE TREAD AND TIRE HAVING TREAD

    KANEKO SHUICHI | European Patent Office | 2016

    Free access

    TIRE TREAD AND TIRE HAVING TREAD

    KANEKO SHUICHI | European Patent Office | 2020

    Free access