a steel cord to be used for, particularly in the manufacturing articlescomposites elastomer matrix.process and apparatus for the manufacture of the same and tyre provided with said reinforcing).

摘要

a cord including at least a first pair and a second pair of wires (2a, 2b) have different diametres in random in its cross section.is obtained by arranging in the basket (7) is a double twist machine, a roller (16) upstream of preformateur systems (15).the spool (16) in a direction opposite the rotation of the driving wheel (5) and at a speed which is the double of that of the driving wheel.put the internal torsional strain induced in the wires (2a, 2b) through the effect of double winding executed by the action of the driving wheel itself.thus, a better control of the operation of preparation, excecutee on the wires (2a, 2b), respectively, have at the same time on coplanar axes, is permitted.the cord is obtained (1).in each step of setting and under conditions which a tensile load is not more than, and only under conditions of excess tension through loadingnot ten pounds, has at least one cross section in which at least one wire (2a, 2b) is space from at least one of the adjacent wires so as to facilitate the design of caoutchoutage.access to the mixing section and the pressure along the axis of the cord (1).the yarn is preferably used as a reinforcing element in the band structures for tires