D - Textiles – Paper – 07 – B
Patent
D - Textiles, Paper
07
B
D07B 1/06 (2006.01)
Patent
CA 2489297
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 (C¿i?) and an outer unsaturated layer (C¿e?) 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 ·C of more than 6 %.
La présente invention concerne des câbles hybrides à couches dont certains sont utilisables pour renforcer au moins une nappe sommet de protection de pneumatiques poids-lourd ou génie civil, et d'autres pour renforcer des bourrelets de pneumatique pour véhicules légers à moteur, tels que des motocyclettes. L'invention concerne également un tissu composite utilisable comme nappe de sommet de protection de tels pneumatiques poids-lourd ou génie civil, une tringle destinée à renforcer ces bourrelets de pneumatique et les pneumatiques précités. Un câble hybride à couches (C) selon l'invention comporte une couche interne (Ci) non métallique et une couche externe (Ce) insaturée comportant des torons (T) qui sont chacun au moins en partie métalliques et qui sont enroulés en hélice sur ladite couche interne, et ce câble présente un allongement relatif à la rupture At, mesuré en traction selon la norme ISO 6892 de 1984, qui est supérieur à 7 %. Selon un autre aspect de l'invention, cette couche interne est constituée d'au moins un matériau présentant un allongement relatif à la rupture Ar à 20~ C qui est supérieur à 6 %.
Barguet Henri
Ducourant Laurence
Pottier Thibaud
Vo Le Tu Anh
Michelin Recherche Et Technique S.a.
Robic
LandOfFree
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