| 摘要 |
PROBLEM TO BE SOLVED: To reduce the cost, prevent a belt separation from arising, and improve the uniformity by a method wherein a belt layer in the circumferential direction is formed by spirally winding, and the winding start end part and the winding finish end part are arranged in parallel based on the tire equatorial plane. SOLUTION: A belt layer 8 in the circumferential direction is wound in parallel based on a tire equatorial plane 6 until a ribbon-form narrow cord rubber-coated sheet 9 is wound one time from the winding start end, and the belt layer 8 is spirally wound from the second winding to a location which is one winding before from the winding finish end, and is wound in parallel based on the tire equatorial plane 6 from the one winding before location to the winding finish end for the formation. Tilt belts 7a, 7b on the internal surface side are formed of a crossing belt constituted by laminating cord rubber-coated layers wherein steel cords are arranged respectively, e.g. at an angle of±20 deg. based on the tire equatorial plane 6, and a tilt belt layer 7c on the external surface side is formed of a cord rubber-coated layer of a cord arrangement of the same direction and the same angle with the tilt belt layer 7b on the internal surface side.
|
