| abstract |
FIELD: construction.SUBSTANCE: invention relates to reinforcing materials, in more detail to tires for reinforcement of tires, tapes, hoses, pipelines, ropes, umbilical cables, etc. Disclosed is a cord comprising a multifiber para-aramid yarn of non-round cross-section fibers, wherein the fiber cross-section has a smaller and larger size. Ratio of larger and smaller cross-section of fibers ranges from 1.5 to 10, and smaller size of cross-section of fibers is maximum 50 mcm, wherein para-aramid has at least 90 % of para-bonds between aromatic fragments.EFFECT: technical result is improvement of fatigue properties of cord.7 cl, 13 dwg, 6 tbl |