| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a double V-ribbed belt excellent in durability. Ž<P>SOLUTION: The double V-ribbed belt B is provided with an adhesive rubber layer 11 having a core line 18 embedded to form a spiral having a pitch in a belt width direction, an inside rib rubber layer 12 provided at a belt inner circumference side of the adhesive rubber layer 11 and formed to align a plurality of V-ribs 14 extending in a belt circumference direction respectively in the belt width direction in parallel, and an outside rib rubber layer 13 provided at a belt outer circumference side of the adhesive rubber layer 11 and having a plurality of V-ribs 16 extending in the belt circumference direction respectively formed in the belt width direction in parallel. Rubber thickness D1 from a rib bottom of the V-rib 14 of the inside rib rubber layer 12 to the core line 18 of the adhesive rubber layer 11 and rubber thickness D2 from a rib bottom of the V-rib 16 of the outer rib rubber layer 13 to the core line 18 of the adhesive rubber layer 11 are same. In the adhesive rubber layer 11, rubber thickness d1 at the inside rib rubber layer 12 side of the core line 18 is thinner than rubber thickness d2 at the outside rib rubber layer of the core line 18. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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