| 发明名称 |
PNEUMATIC RADIAL TIRE FOR A PASSENGER CAR HAVING ULTRA FINE STEEL CORDS FOR A CARCASS PLY |
| 摘要 |
Disclosed is a pneumatic radial tire for a passenger car having ultra fine steel cords for a carcass ply in which adhesive force between a carcass ply layer and a side wall or a rim flange rubber adjacent to a turn up portion on an outside and a stiffness of the rim flange rubber are larger than a bending stiffness of the carcass ply layer so as to improve durability of a bead part while reducing poor air inletting generated at a carcass turn up portion. |
| 申请公布号 |
US2016082776(A1) |
申请公布日期 |
2016.03.24 |
| 申请号 |
US201514671641 |
申请日期 |
2015.03.27 |
| 申请人 |
KUMHO TIRE CO., INC. |
发明人 |
LIM Dong-Min;CHOI Cheul-Ho |
| 分类号 |
B60C9/00 |
主分类号 |
B60C9/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A pneumatic radial tire for a passenger car which uses ultra fine steel cords having a wire diameter of 0.14 mm or less as a reinforcing material of a carcass ply, wherein a bending force of the carcass ply FP satisfies a relation equation below between a turn up height of the carcass ply h, tensile strength of the rim flange rubber MRF, and a thickness of the rim flange rubber t
0<FP<(0.025×h)+(MRF×t) |
| 地址 |
Gwangju KR |
