Continental Reifen Deutschland Gmbh

Reinhard Ludwig

Heiner Volk

Thomas Kramer

Christian Weber

Wolfgang Reese

Marcel Neumann

Christian Struebel

Joachim Busche

Annalena Thiemann

Axel Binder

Tobias Helmich

Zi-Jie Soo

Viktor Blümel

Sascha Bergmann

Milan Kvasnica

Ralf Volbers

The invention relates to a hybrid cord for use as a reinforcement in a belt bandage of a pneumatic vehicle tire, consisting of at least two threads with ends which are twisted together. At least one first thread is a high-modulus thread with a specified thread fineness, and another thread is a low-modulus thread, said other low-modulus thread having a lower thread fineness than the first thread. The invention is characterized in that the proportion of the high-modulus thread in the hybrid cord is 80-95 wt. %; the difference between the thread fineness of the high-modulus thread and the thread fineness of the other low-modulus thread is &#x3e;800 dtex; and the elongation at break of the high-modulus thread ranges from 1%-8%, and the elongation at break of the low-modulus thread ranges from 9%-30%.

Hybrid cord for use as reinforcement in a belt bandage of a pneumatic vehicle tire

A pneumatic vehicle tire having a radial carcass, an at least single-layer belt and a tread that is composed of two layers, a tread cap and a tread base, which are made from different rubber mixtures, in a radial direction, the tread base having a central portion and two lateral portions that extend at least in a radially outward direction from an axial perspective. The two lateral portions are made from a rubber mixture that has a lower dynamic modulus of elasticity E' at 55&#xb0; C. in accordance with DIN 53513 (measured at an extension of 8%) and a lower hysteresis than the central portion of the tread base for a lower rolling resistance without worsening the handling behavior of the vehicle tire.

Pneumatic vehicle tire

Growing community of inventors

Bad Münder, Germany

Reinhard Ludwig