Patent ID: 6021633
Filing Date: 2000-02-08
Classification: D07B,Y10S

Abstract:
A process for the manufacture of a reinforcing metallic cord, in particular for composite articles of manufacture of elastomer material, comprising wires helically twisted together and about the longitudinal axis of the cord, said process comprising at least the sequential steps of:submitting each wire of a plurality of wires to a false-torsion action about its own axis,preforming each wire of said plurality of wires, wherein each said wire is submitted to a permanent bending deformation along each said wire's own longitudinal axis;laying the wires together, to form the cord, by a double helical twisting about the longitudinal axis of the resulting cord,wherein said false-torsion action neutralizes, before the preforming step, the return torsional stresses induced in said wires by effect of said laying step.