Rubber-reinforcing aromatic polyamide fiber cords

Details Rubber-reinforcing aromatic polyamide fiber cords Rubber-reinforcing aromatic polyamide fiber cords

1987-06-17

1988-11-29

Levy, Stuart S.

Textiles: spinning, twisting, and twining

Strand structure

Plied

57236, 57902, D02G 328, D02G 340, D02G 348

Patent

active

047872004

ABSTRACT:
Rubber-reinforcing polyamide fiber cords are disclosed which are each obtained by primarily twisting an aromatic polyamide filament yarn, doubling a plurality of thus primarily twisted yarns and finally twisting doubled yarns in a twisting direction opposite to that of the primary twist yarn to obtain a plied yarn, and applying a rubber adhesive to the thus obtained plied yarn. N and M satisfy the following relation: 1.05.ltoreq.M/N.ltoreq.1.6 in which N and M are the number of primary twists and the number of the twists in the cord, respectively.

REFERENCES:
patent: 2273200 (1942-02-01), Hoff
patent: 3597303 (1971-08-01), Tanaka
patent: 3977172 (1976-08-01), Kerawalla
patent: 4155394 (1979-05-01), Shepherd et al.
patent: 4389839 (1983-06-01), van der Werff
patent: 4435236 (1984-03-01), Inae et al.
patent: 4498891 (1985-02-01), Mashimo et al.
patent: 4652252 (1987-03-01), Westhoff et al.
patent: 4652488 (1987-03-01), Willemsen et al.

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