Power-Transmitting Friction Belt and Method for Manufacturing Same
US-2017284504-A1 · Oct 5, 2017 · US
Friction transmission belt and manufacturing method therefor
US10647075B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10647075-B2 |
| Application number | US-201816041616-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 20, 2018 |
| Priority date | Jan 22, 2016 |
| Publication date | May 12, 2020 |
| Grant date | May 12, 2020 |
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- Title
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Abstract
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A friction transmission belt has a rubber layer forming a pulley contacting portion. The rubber layer is made of a rubber composition containing a crosslinked rubber component and crosslinked polyolefin particles. Examples of the crosslinked polyolefin particles can contain ultrahigh molecular weight polyolefin particles having an average molecular weight of 500,000 or more.
First claim
Opening claim text (preview).
What is claimed is: 1. A friction transmission belt comprising a rubber layer forming a pulley contacting portion, wherein the rubber layer is made by crosslinking an uncrosslinked rubber composition comprising an uncrosslinked rubber component and radiation-crosslinked polyolefin particles. 2. The friction transmission belt of claim 1 , wherein with the radiation-crosslinked polyolefin particles contain ultrahigh molecular weight polyolefin particles having an average molecular weight of 500,000 or more. 3. The friction transmission belt of claim 1 , wherein the radiation-crosslinked polyolefin particles contain crosslinked polyethylene particles. 4. The friction transmission belt of claim 1 , wherein a content of the radiation-crosslinked polyolefin particles in the uncrosslinked rubber composition is 20 parts by mass or more and 100 parts by mass or less with respect to 100 parts by mass of the uncrosslinked rubber component. 5. The friction transmission belt of claim 1 , wherein the uncrosslinked rubber composition further contains uncrosslinked polyolefin particles. 6. The friction transmission belt of claim 1 , further comprising a core rubber portion covered with the rubber layer. 7. The friction transmission belt of claim 6 , wherein the core rubber portion is made of a rubber composition in which a content of the radiation-crosslinked polyolefin particles with respect to 100 parts by mass of a rubber component is smaller than the content of the radiation-crosslinked polyolefin particles with respect to 100 parts by mass of the uncrosslinked rubber component of the rubber layer, or a rubber composition not containing the radiation-crosslinked polyolefin particles. 8. The friction transmission belt of claim 1 , wherein the rubber layer is made of a porous rubber. 9. A method for forming the friction transmission belt according to claim 1 comprising heating and pressing an uncrosslinked rubber composition prepared by mixing an uncrosslinked rubber component and radiation-crosslinked polyolefin particles, and thereby crosslinking the uncrosslinked rubber composition. 10. The method of claim 9 , wherein the radiation-crosslinked polyolefin particles are prepared by irradiating uncrosslinked polyolefin particles with radiation. 11. The method of claim 9 , wherein the radiation-crosslinked polyolefin particles are formed into clusters, further comprising fusing and integrating the clusters by the heating into a spherical or ellipsoidal shape. 12. A friction transmission belt comprising a rubber layer forming a pulley contacting portion, wherein the rubber layer is made of a rubber composition containing a crosslinked rubber component and crosslinked polyolefin particles, and the crosslinked polyolefin particles contain crosslinked polyolefin hollow particles having hollow portions. 13. A friction transmission belt comprising a rubber layer forming a pulley contacting portion, wherein the rubber layer is made of a rubber composition containing a crosslinked rubber component and crosslinked polyolefin particles prepared by irradiating uncrosslinked polyolefin particles with radiation.
Assignees
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Classifications
Precrosslinked rubber; Scrap rubber; Used vulcanised rubber · CPC title
with metal reinforcement · CPC title
with metal reinforcement · CPC title
with a contact surface of special shape, e.g. toothed · CPC title
- B29D29/08Primary
Toothed driving belts · CPC title
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Frequently asked questions
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- What does patent US10647075B2 cover?
- A friction transmission belt has a rubber layer forming a pulley contacting portion. The rubber layer is made of a rubber composition containing a crosslinked rubber component and crosslinked polyolefin particles. Examples of the crosslinked polyolefin particles can contain ultrahigh molecular weight polyolefin particles having an average molecular weight of 500,000 or more.
- Who is the assignee on this patent?
- Bando Chemical Ind
- What technology area does this patent fall under?
- Primary CPC classification B29D29/08. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue May 12 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). 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).