| 摘要 |
PROBLEM TO BE SOLVED: To provide a toothed belt which has environment resistance such as favorable heat resistance and cold resistance, and high rigidity, and is enhanced in accuracy, reduced in weight, made compact, and low in noise.SOLUTION: A toothed belt 1 is provided with a belt body 4 including a plurality of core wires juxtaposed in the width direction of a rubber portion, a plurality of tooth rubber portions formed on one surface of the belt body 4, and a tooth cloth 6 covering the surface of the tooth rubber portions. The rubber portion contains dioctyl sebacate and trimellitic acid ester in a mass part ratio of 1:19 to 1:1, the mass percentage of the dioctyl sebacate to the whole quantity of the rubber portion is less than 4 mass %, and the mass percentage of the total quantity of the dioctyl sebacate and the trimellitic acid ester to the whole quantity of the rubber portion is in a range from 4 mass % to 8 mass %. |
