Cable has three layers, in situ, for a carcass reinforcement of tires.

摘要

Metal cord (C-1) with three layers (C1, C2, C3), which is rubberized in situ, comprising a core or first layer (10, C1) of diameter d1, around which there are wound together in a helix at a pitch p2, in a second layer (C2), N wires (11) of diameter d2, around which there are wound together in a helix at a pitch p3, in a third layer (C3), P wires (12) of diameter d3, wherein the cord has the following characteristics (d1, d2, d3, p2 and p3 being expressed in mm): 0.08≦̸d1≦̸0.50; 0.08≦̸d2≦̸0.45; 0.08≦̸d3≦̸0.45; 5.1&pgr;(d1+d2)p2p34.9&pgr;(d1+2d2+d3); over any 2 cm length of cord, a rubber composition called “filling rubber” (13) is present in each of the capillaries (14) lying on the one hand between the core (C1) and the N wires (11) of the second layer (C2), and on the other hand between the N wires (11) of the second layer (C2) and the P wires (12) of the third layer (C3); the content of filling rubber (13) in the cord is comprised between 10 and 50 mg per gram of cord. Multi-strand cord at least one of the strands of which is a three-layered metal cord (C-1) rubberized in situ.