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

US11148469B2 · kind B2 · utility

Assignee

• Continental Reifen Deutschland GmbH · DE

Inventors

• Wolfgang Reese · Peine, DE
• Reinhard Ludwig · Kiel, DE
• Heiner Volk · Neustadt, DE
• Thomas Kramer · Herford, DE
• Marcel Neumann · Berlin, DE

Key dates

• Filing date: Jun 9, 2015
• Grant date: Oct 19, 2021
• Expiry date: Oct 12, 2036

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60C2009/0092
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

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 >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%.