摘要:
The invention relates to a steel cord (30) comprising cylindrical layers, said cord including: an inner layer (C1) formed by M wires, an intermediate layer (C2) formed by N wires helically wound around the inner layer (C1), and an outer layer (C3) formed by P wires helically wound around the intermediate layer (C2), in which the inter-wire distance D2 of the wires of the intermediate layer (C2) is greater than or equal to 25 µm and the inter-wire distance D3 of the wires of the outer layer (C3) is greater than or equal to 25 µm.
摘要:
The invention relates to a method for the wet drawing of a steel cable, also called “steelcord”, for reinforcing a tyre, that uses, as a lubricant composition, an aqueous dispersion containing solid particles of a fatty acid ester including from 5 to 40 carbon atoms, in particular a diester of the formula R1 - CO - O - A - O - CO - R2] in which R1 and R2 are hydrocarbon groups including from 5 to 23 carbon atoms, preferably from 13 to 21 carbon atoms. More particularly, the diester is a glycol distearate (EGDS). The use of such a diester, particularly in combination with a surfactant such as a block copolymer of ethylene oxide and C3-C10 alkylene oxide, results in improved lubrication performance.