| 摘要 |
<p>A V-ribbed belt which can suppress generation of abnormal sounds, while exhibiting excellent crack resistance. The V-ribbed belt is used by being wrapped around a pulley and provided with a plurality of ribs extending in the longitudinal direction of the belt. The V-ribbed belt is characterized in that a two-layer structure composed of a surface layer constituting the surface being in contact with the pulley and an inner layer constituting the inside of the surface layer is formed in each rib, the surface layer is made of a polyurethane composition having a 10% modulus within the range of 1.8-6 MPa, and the inner layer is made of a rubber composition having a 10% modulus within the range of 1.5-3 MPa.</p> |
