The invention relates to a pneumatic tyre comprising a working reinforcement comprising a single working ply, a carcass reinforcement and a bracing reinforcement. The at least one bracing reinforcingtextile wire-like element (480), the wire-like working reinforcing elements (460) and the wire-like carcass reinforcing elements (440) are arranged in such a way as to define a triangular mesh projecting over the equatorial circumferential plane (E). The or each bracing reinforcing textile wire-like element (480) is formed by a cord (30) with a triple twist (T1, T2, T3), comprising an assembly (25) consisting of N>1 strands (20a, 20b, 20c) twisted together with a torsion T3 and in a direction D2, each strand consisting of M>1 pre-strands which are, in turn, twisted together with a torsion T2 (T2a, T2b, T2c) and in the oppposite direction D1 to the direction D2, and each pre-strand consisting, in turn, of a spun yarn which has been previously twisted about itself with a torsion T1 and in the direction D1, in which at least half of the N times M spun yarns consists of elementary monofilaments of aromatic polyamide or aromatic copolyamide.
本发明涉及一种充气轮胎,其包括具有单个工作帘布层的工作增强件、胎体增强件和环箍增强件。布置至少一个环箍增强织物丝状元件(480)、丝状工作增强元件(460)和丝状胎体增强元件(440)以限定投影在赤道周向平面(E)上的三角形网格。所述或每个环箍增强织物丝状元件(480)由具有三重捻(T1、T2、T3)的帘线(30)形成,所述帘线(30)包括由N>1根线股(20a、20b、20c)组成的组件(25),所述N>1根线股(20a、20b、20c)以捻度T3和方向D2捻合在一起,每根线股由M>1根预线股组成,这些预线股又以捻度T2(T2a、T2b、T2c)和与方向D2相反的方向D1捻合在一起,并且每根预线股又由纺纱组成,所述纺纱预先以捻度T1和方向D1围绕自身加捻,其中N乘M根纺纱中的至少一半由芳族聚酰胺或芳族共聚酰胺的基本单丝组成。
PNEUMATIC TYRE COMPRISING AN IMPROVED ARAMID TEXTILE CORD WITH AN AT LEAST TRIPLE TWIST
包括改善的具有至少三重捻的芳纶织物帘线的充气轮胎
2021-01-08
Patent
Elektronische Ressource
Chinesisch
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