Patent ID: 7314533

Claim:
A method of manufacturing a tire reinforcing material formed of a cord fabric constructed of warp cords arranged in parallel with each other and wefts arranged substantially orthogonally to said warp cords, comprising: a topping step for coating with rubber said cord fabric having said wefts folded back at respective warp cords at opposing ends of said cord fabric to produce a ply; a cutting step for cutting said ply into ply pieces each having a predetermined length; a joint forming step for removing one to five cords at each of opposing ends of said ply to form a joint; wherein one to five warp cords at each of the opposing ends of said ply is/are removed: and a folded-back portion of said wefts at each of the opposing ends of said ply is cut; and a joining step for joining together the joint of one of said ply pieces and the joint of another ply piece.