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US 2022/0090647 A1Published application
Raw edge v-belt
AssigneeBando Chemical Industries, Ltd.
InventorsIkuhito DOI, Shogo KOBAYASHI, Noriaki NAODA
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Abstract
A raw edge V-belt includes: a compression rubber layer formed on an inner side of the belt and made of a rubber composition. The rubber composition contains a rubber component, fine cellulose fibers, and short fibers. The content of the short fibers in the rubber composition is 25 parts by mass or more and 45 parts by mass or less per 100 parts by mass of the rubber component, and the volume fraction of the short fibers in the rubber composition is 12.5 vol % or more.
Claims14
A raw edge V-belt, comprising:
- a compression rubber layer formed on an inner side of the belt and made of a rubber composition, wherein
- the rubber composition contains a rubber component, fine cellulose fibers, para-aramid short fibers, and carbon black,
- a content of the para-aramid short fibers in the rubber composition is 27 parts by mass or more and 40 parts by mass or less per 100 parts by mass of the rubber component, and a volume fraction of the para-aramid short fibers in the rubber composition is 12.5 vol % or more, and
- a sum of the content of the carbon black and the content of the para-aramid short fibers in the rubber composition is 68 parts by mass or more and 77 parts by mass or less per 100 parts by mass of the rubber component.
1 more element
Dependencies are inferred from the claim text.