| 发明名称 |
TIRE COMPRISING A TREAD MADE UP OF SEVERAL ELASTOMERIC COMPOUNDS |
| 摘要 |
A tire with a radial carcass reinforcement, having a crown reinforcement, itself capped radially by a tread connected to two beads by two sidewalls, having at least two radially superposed layers of elastomeric compounds; a first layer, forming the radially outer part of the tread, has a first elastomeric compound having a modulus G* greater than 1.8 MPa, a second layer of elastomeric compounds radially on the inside of and in contact with the said first layer of elastomeric compound has at least three parts, the axially outer parts having a second elastomeric compound having a maximum value of tan (δ), denoted tan (δ) max, strictly less than 0.060, and at least a part of the second layer, axially in contact with at least an axially outer part having a third compound with modulus G* greater than 1.2 MPa and at least 5% less than the first elastomeric compound and a maximum value of tan (δ), tan (δ)max, between 0.060 and 0.120. |
| 申请公布号 |
US2015314650(A1) |
申请公布日期 |
2015.11.05 |
| 申请号 |
US201314650874 |
申请日期 |
2013.12.02 |
| 申请人 |
Compagnie Generale des Etablissements Michelin ;Michelin Recherche et Technique S.A. |
发明人 |
NAVARRO-LOSADA Claudia;QUANTINET Benjamin;GODEAU Gilles;TREGOUET Pierre |
| 分类号 |
B60C11/00;B60C1/00;B60C5/00 |
主分类号 |
B60C11/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A tire with a radial carcass reinforcement, comprising:
a crown reinforcement, a tread radially capping the crown reinforcement, and connected to two beads by two sidewalls, comprising at least two radially superposed layers of elastomeric compounds, wherein a first layer, forming the radially outer part of the tread, consists of a first elastomeric compound having a modulus G* greater than 1.8 MPa, wherein a second layer of elastomeric compounds radially on the inside of and in contact with the first layer of elastomeric compound, consists of at least three parts, wherein axially outer parts of the second layer consist of a second elastomeric compound having a maximum value of tan (δ), denoted tan(δ)max, strictly less than 0.060, and wherein at least a part of the second layer, axially in contact with at least an axially outer part consists of a third compound having a value of the modulus G* greater than 1.2 MPa and at least 5% less than that of the first elastomeric compound and a maximum value of tan (δ), denoted tan (δ)max, of between 0.060 and 0.120. |
| 地址 |
Clermont-Ferrand FR |
