METAL CORD WITH IMPROVED RUBBER PENETRATION Russian patent published in 2005 - IPC

FIELD: manufacture of articles from metal cords, in particular, reinforcement of rubber-based technical products.

SUBSTANCE: metal cord comprises at least one metal cord member having projection onto plane perpendicular to axis of metal cord contoured as curved line having form enabling formation in metal cord of micro gaps enhancing rubber penetration. Resultant curve has two radii of flexure: minimal at its convex portion and minimal at its concave portions. Maximal and minimal flexure radii ratio is within the range of from 2 to 10. Projection onto plane perpendicular to axis of metal cord of each subsequent wire repeats curved line of previous metal cord wire with angular shift by value, at which distance between adjacent wires curved at small radius makes at least two flexure radii.

EFFECT: increased density and tightness of wires adhering to one another, improved penetration of rubber into metal cord structure, increased migration resistance of wires during operation of tires and increased corrosion resistance of metal cord.

9 cl, 4 dwg, 2 tbl