abstract |
A V-belt (B) includes a rubber composition forming a portion ( 11 ) to be V-shaped side faces ( 110 ). Organic nanofibers ( 16 ) and organic short fibers ( 17 ) are included in the rubber composition, and oriented along a belt width. In the rubber composition, a ratio of a storage modulus in a grain direction to a storage modulus in cross-grain direction is 5 or greater. |