US 12,123,478 B2
V-ribbed belt, production method therefor, and rubber composition
Manabu Mitsutomi, Hyogo (JP); Yuji Kamba, Hyogo (JP); Yorifumi Hineno, Hyogo (JP); and Hiroki Takechi, Hyogo (JP)
Assigned to Mitsuboshi Belting Ltd., Kobe (JP)
Appl. No. 17/442,940
Filed by Mitsuboshi Belting Ltd., Kobe (JP)
PCT Filed Apr. 6, 2020, PCT No. PCT/JP2020/015587
§ 371(c)(1), (2) Date Sep. 24, 2021,
PCT Pub. No. WO2020/213462, PCT Pub. Date Oct. 22, 2020.
Claims priority of application No. 2019-078096 (JP), filed on Apr. 16, 2019; and application No. 2020-053084 (JP), filed on Mar. 24, 2020.
Prior Publication US 2022/0145962 A1, May 12, 2022
Int. Cl. F16G 5/08 (2006.01); B29D 29/10 (2006.01); C08L 23/16 (2006.01); F16G 5/06 (2006.01); F16G 5/20 (2006.01)
CPC F16G 5/08 (2013.01) [C08L 23/16 (2013.01); F16G 5/06 (2013.01); F16G 5/20 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A V-ribbed belt comprising:
a tension rubber layer made of a vulcanizate of a rubber composition comprising a rubber component and short fibers; and
a core wire,
wherein a proportion of the short fibers in the rubber composition is 15-50 parts by mass with respect to 100 parts by mass of the rubber component, and
the rubber composition has a minimum Mooney scorch viscosity measured at 125° C. of 70-130.