Steel cord twisting structure

Details Steel cord twisting structure Steel cord twisting structure

1985-06-26

1986-12-16

Watkins, Donald

Textiles: spinning, twisting, and twining

Strand structure

Covered or wrapped

57230, 57902, 152556, D02G 348, D07B 106

Patent

active

046286837

ABSTRACT:
A steel cord, for use in the reinforcement of resilient articles such as rubber tyres, comprises a central bundle of wires surrounded by a circumferential layer of helicoidally twisted wires. In the central bundle, one can distinguish a core and a surrounding layer, the latter having the same twist pitch as the circumferential layer. In order to reduce wire migration, the wires of the central bundle show a limited number of relative position changes, between 2 and 300 per 30 cm cord length.

REFERENCES:
patent: 2492352 (1949-12-01), Bourdon
patent: 3336744 (1967-08-01), Perne
patent: 4158946 (1979-06-01), Bourgois
patent: 4349063 (1982-09-01), Kikuchi et al.
patent: 4488587 (1984-12-01), Umezawa et al.

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