| 摘要 |
PURPOSE:To provide a steel cord reinforced rubber layer improved in the penetrability of rubber into steel cords so as to reduce the permeation of air in the steel cords, preventing the corrosion of the steel cords so as to improve service life and desirable in bending resistant fatigue even if the cord diameter is made thick. CONSTITUTION:A steel cord reinforced rubber belt is formed of a strip rubber belt body 2 and steel cords 3. In the steel cord 3, an inner layer 3A is formed of four center element wires do of the same diameter, four first side element wires d2 of the same diameter, and four second side element wires d2 of the same diameter but smaller than the diameter of the first side element wire d1; and all the element wires of the inner layer 3A are stranded in the same direction and length. In addition, the stranded length of the element wires of the inner layer 3A is to be 0.5-0.9 times as long as the stranded length of twelve to twenty third side element wires d3 of the same diameter in a middle layer 3B, and the stranded length of the third side element wires d3 of the middle layer 3B is to be 0.5-0.9 times as long as the stranded length of twelve to twenty fourth side element wires d4 of the same diameter in an outer layer 3C.
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