RUBBER REINFORCING STEEL CORD AND HEAVY DUTY PNEUMATIC RADIAL TIRE USING THE STEEL CORD

摘要

A rubber reinforcing steel cord of a bundle-twisted + layer-twisted structure obtained by arranging 9 steel filaments around 3 steel filaments each being two-dimensionally wave-like shaped in the lengthwise direction, intertwining all of these steel filaments in one operation to form a bundle-twisted cord, and further arranging 14 steel filaments around the bundle-twisted cord followed by intertwining. Also, a heavy duty pneumatic radial tire using the rubber reinforcing steel cord as the cord of the carcass layer thereof. IMAGE