Ethylene-Based Copolymer and Propylene-Alpha-Olefin-Diene Compositions for Use in Layered Articles
US-2023250268-A1 · Aug 10, 2023 · US
V-Ribbed Belt, Production Method Therefor, and Rubber Composition
US2022145962A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022145962-A1 |
| Application number | US-202017442940-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 6, 2020 |
| Priority date | Apr 16, 2019 |
| Publication date | May 12, 2022 |
| Grant date | — |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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Abstract
Official abstract text for this publication.
The present invention relates to a V-ribbed belt including: a tension rubber layer made of a vulcanizate of a rubber composition including a rubber component and short fibers; and a core wire, in which 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.
First claim
Opening claim text (preview).
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. 2 . The V-ribbed belt according to claim 1 , wherein the vulcanizate has a hardness (JIS-A) of 80-90 degree. 3 . The V-ribbed belt according to claim 1 , wherein an orientation direction of the short fibers is a belt width direction. 4 . The V-ribbed belt according to claim 1 , wherein the short fibers have an average fiber length of 1-10 mm. 5 . The V-ribbed belt according to claim 1 , wherein fibers constituting the core wire have a tensile elastic modulus of 50 GPa or more. 6 . The V-ribbed belt according to claim 1 , wherein the core wire is in contact with the vulcanizate. 7 . The V-ribbed belt according to claim 1 , wherein a deviation of the core wire in a belt thickness direction is 0.08 mm or less. 8 . A manufacturing method of the V-ribbed belt according to claim 1 , the method comprising a step of pressing a laminate comprising a sheet of the rubber composition and the core wire against a die. 9 . A rubber composition which is an unvulcanized rubber composition for forming a tension rubber layer of a V-ribbed belt, the rubber composition comprising a rubber component and short fibers, wherein a proportion of the short fibers 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.
Assignees
Inventors
Classifications
Ethylene-propylene or ethylene-propylene-diene copolymers · CPC title
with reinforcement bonded by the rubber · CPC title
with a contact surface of special shape, e.g. toothed · CPC title
- B29D29/103Primary
Multi-ribbed driving belts · CPC title
- F16G5/08Primary
with textile reinforcement · CPC title
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Frequently asked questions
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- What does patent US2022145962A1 cover?
- The present invention relates to a V-ribbed belt including: a tension rubber layer made of a vulcanizate of a rubber composition including a rubber component and short fibers; and a core wire, in which 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…
- Who is the assignee on this patent?
- Mitsuboshi Belting Ltd
- What technology area does this patent fall under?
- Primary CPC classification B29D29/103. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu May 12 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).