| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve durability of a friction transmission belt such as a V-ribbed belt used in a high tension/high load environment. <P>SOLUTION: A V-ribbed belt 10 includes an adhesive rubber part 12 and a compressed rubber part 14 provided below the adhesive rubber part 12. Core wires 11 which are belt-tensioning members are embedded in the adhesive rubber part 12. The adhesive rubber part 12 includes an upper layer 12A which forms the upper side and a lower layer 12B which forms the lower side, with the core wires 11 as the boundary. The upper layer 12A and the lower layer 12B are formed by vulcanizing a rubber composition that includes a high viscosity elastomer such as EPM or EPDM and a low viscosity elastomer having a lower Mooney viscosity than the high viscosity elastomer, and these layers include modified nylon microfibers as short fibers 21A, 21B. The short fibers 21A and 21B are oriented respectively in the width direction and the longitudinal direction of the belt. <P>COPYRIGHT: (C)2013,JPO&INPIT |
