| 摘要 |
The invention relates to hybrid cables provided with layers, some of which can be used to reinforce at least one protective crown ply for the wheels of heavy goods vehicles or wheels used in civil engineering vehicles, and others which can be used to reinforce the rims of tyres used in light-duty motor vehicles such as motorcycles. The invention also concerns a composite material which can be used as a protective crown ply for said heavy-goods vehicle or civil engineering vehicle tyres, a bead wire used to reinforce the rims of the tyres, and the above-mentioned tyres. According to the invention, a hybrid cable provided with layers (C) comprises a non-metallic inner layer (Ci) and an outer unsaturated layer (Ce) consisting of strands (T), each of which is at least partially metallic and which are wound in the form of a spiral on said inner layer. The cable has a break elongation At, measured in traction according to standard ISO 6892 (1984), of more than 7 %. According to another aspect of the invention, said inner layer consists of at least one material having a break elongation Ar at 20 DEG C of more than 6 %. |
