CPC F16G 5/08 (2013.01) [B29D 29/10 (2013.01); D02G 1/18 (2013.01); D02G 3/04 (2013.01); D02G 3/447 (2013.01); D06M 15/693 (2013.01); F16G 5/20 (2013.01); D10B 2331/021 (2013.01)] | 11 Claims |
1. A V-ribbed belt comprising a twisted cord that is obtained by mix-twisting: a high-elongation aramid fiber having an intermediate elongation under a load of 4 cN/dtex of 0.8% or higher and 3% or lower, and a tensile modulus of 50-100 GPa; and an aliphatic polyamide fiber having a lower tensile modulus than the high-elongation aramid fiber, and the V-ribbed belt having a tensile strength of 1.6 to 2.4 (kN/rib),
wherein the aliphatic polyamide fiber has a tensile modulus of 20 GPa or less, and
wherein the twisted cord is obtained by secondarily-twisting three untwisted yarns of the high-elongation aramid fiber or three primarily-twisted yarns of the high-elongation aramid fiber obtained by twisting the high-elongation aramid fiber in one direction; and one or a plurality of untwisted yarns of the aliphatic polyamide fiber or one or a plurality of primarily-twisted yarns of the aliphatic polyamide fiber obtained by twisting the aliphatic polyamide fiber in one direction,
wherein the twisted cord is a Lang lay cord.
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