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    • 41. 发明申请
    • Pneumatic Radial Tire
    • 气动径向轮胎
    • US20080135152A1
    • 2008-06-12
    • US11795517
    • 2006-01-20
    • Daisuke Nakajima
    • Daisuke Nakajima
    • B60C9/12
    • D02G3/48B60C9/0042B60C9/20Y10T152/10513Y10T152/10783Y10T428/2967
    • This invention relates to a pneumatic radial tire being excellent in steering stabilities during low-speed running and high-speed running, and more particularly to a pneumatic radial tire comprising at least one belt reinforcing layer 6A, 6B disposed on a belt 5 outward in a radial direction of the tire, characterized in that a reinforcing element constituting the belt reinforcing layer 6A, 6B is a polyketone fiber cord satisfying conditions of the following equations (I) and (II): σ≧−0.01×E+1.2   (I) σ≧−0.02   (II) [wherein σ is a thermal shrinkage stress (cN/dtex) at 177° C.; and E is an elastic modulus (cN/dtex) at 25° C. under a load of 49 N].
    • 本发明涉及一种在低速行驶和高速行驶中转向稳定性优异的充气子午线轮胎,更具体地说,涉及一种充气子午线轮胎,该充气子午线轮胎包括设置在带5上的至少一个带束层增强层6A,6B, 在轮胎的径向方向上,其特征在于,构成带束层增强层6A,6B的增强元件是满足下列等式(I)和(II)的条件的聚酮纤维帘线:<? description =“In-line Formulas”end =“lead”?> sigma> = - 0.01xE + 1.2(I)<?in-line-formula description =“In-line Formulas”end =“tail”?> in-line-formula description =“In-line Formulas”end =“lead”?> sigma> = - 0.02(II)<?in-line-formula description =“In-line Formulas”end =“tail”?> [其中σ是177℃下的热收缩应力(cN / dtex)。 E为49N的负荷时25℃下的弹性模量(cN / dtex)。