Patent ID: 8241452

Claim:
A method of producing a reinforcement fibrous cord having excellent adhesive strength, comprising the steps of: applying an adhesive treatment with an adhesive agent to a meshed cord fabric consisting of warp yarns consisting of yarns for reinforcement cords and weft yarns consisting of yarns comprising at least one member selected from the group consisting of polyesters, polyamides and polyolefins each having a softening temperature or a melting temperature of 50° C. or more lower than any of the softening temperature, the melting temperature and the thermal decomposition-initiating temperature of the yarns for the warp yarns; heat-treating the resultant meshed cord fabric impregnating the adhesive agent, at a temperature equal to or higher than the softening or melting temperature of the yarns for the weft yarns and lower than any of the softening temperature, the melting temperature and the thermal decomposition-initiating temperature of the yarns for the warp yarns so that the weft yarns are softened or melted and then adhered to portions of the warp yarns at which portions the warp yarns intersect with the weft yarns, and thereby the weft yarns are broken at positions between every adjacent warp yarns to form projections caused by the broken residue of the weft yarns on the warp yarns at the intersection with the weft yarns; separating the resultant adhesive agent-impregnating warp yarns having the projections from each other; and collecting the separated warp yarns as fibrous cords, wherein the projections formed from the broken residues of the weft yarns are in the shape of fibrous pieces, a plurality of fused spots of said fibrous pieces, a plurality of melted-solidified spots of the fibrous pieces, or mixtures of two or more kinds thereof.