| 摘要 |
A V-ribbed belt (10) includes a lower rubber layer (12), an adhesive rubber layer (16), and a canvas (22). The lower rubber layer (12) contains short fibers (14) a part of which is projecting from the friction surface (12S) of the lower rubber layer (12). In the lower rubber layer (12), generation of abnormal noise is prevented when the V-ribbed belt (10) is used by using FEF which is carbon black having an average nitrogen surface area of 49 m2/g or less (ASTM D1765-01) as a reinforcement agent, and by providing minute unevenness on the friction surface (12S). Furthermore, appropriate surface roughness is maintained even after the short fibers (14) projecting from the friction surface (12S) have worn down by employing the reinforcement agent, and generation of abnormal noise can be suppressed.
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