Thermoplastic elastomer composition, use thereof, method for producing same, ethylene/α-olefin/unconjugated polyene copolymer and use thereof
US-11078352-B2 · Aug 3, 2021 · US
Sheet transport roller rubber composition and sheet transport roller
US11958707B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11958707-B2 |
| Application number | US-202217866556-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 18, 2022 |
| Priority date | Dec 22, 2021 |
| Publication date | Apr 16, 2024 |
| Grant date | Apr 16, 2024 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A sheet transport roller having a high friction coefficient and a rubber composition for forming a roller main body thereof. The rubber composition of the present disclosure, which is a rubber composition for forming the roller main body of the sheet transport roller, contains a rubber component containing an ethylene-α-olefin copolymer and a rosin component.
First claim
Opening claim text (preview).
What is claimed is: 1. A sheet transport roller rubber composition containing a rubber component containing an ethylene-α-olefin copolymer and a rosin and/or a rosin derivative, wherein an acid value of the rosin and/or the rosin derivative is 50 mg KOH/g or less. 2. The sheet transport roller rubber composition according to claim 1 , wherein a content of the ethylene-α-olefin copolymer in the rubber component is 50% by mass or more. 3. The sheet transport roller rubber composition according to claim 1 , containing 1 part by mass to 15 parts by mass of the rosin and/or the rosin derivative with respect to 100 parts by mass of the rubber component. 4. The sheet transport roller rubber composition according to claim 1 , wherein an organic peroxide is contained as a vulcanizing agent. 5. The sheet transport roller rubber composition according to claim 1 , further containing a diene-based rubber as the rubber component. 6. The sheet transport roller rubber composition according to claim 5 , wherein the diene-based rubber is an isoprene rubber and/or a natural rubber. 7. The sheet transport roller rubber composition according to claim 1 , wherein the sheet is a sheet of paper. 8. A sheet transport roller obtained by curing the sheet transport roller rubber composition according to claim 1 . 9. A method for producing a sheet transport roller rubber composition, comprising: a first step of obtaining a kneaded product obtained by kneading a rubber component containing an ethylene-α-olefin copolymer and a rosin and/or a rosin derivative at a temperature equal to or higher than a softening point of the rosin and/or the rosin derivative, wherein an acid value of the rosin and/or the rosin derivative is 50 mg KOH/g or less. 10. The method for producing a sheet transport roller rubber composition according to claim 9 , further comprising: a second step of mixing a vulcanizing agent with the kneaded product.
Assignees
Inventors
Classifications
- B65H27/00Primary
Special constructions, e.g. surface features, of feed or guide rollers for webs (rollers in general F16C13/00) · CPC title
Other features of rollers · CPC title
- C08L23/16Primary
Ethylene-propylene or ethylene-propylene-diene copolymers · CPC title
Calcium, strontium or barium carbonate · CPC title
particular coefficient of friction · CPC title
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Frequently asked questions
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- What does patent US11958707B2 cover?
- A sheet transport roller having a high friction coefficient and a rubber composition for forming a roller main body thereof. The rubber composition of the present disclosure, which is a rubber composition for forming the roller main body of the sheet transport roller, contains a rubber component containing an ethylene-α-olefin copolymer and a rosin component.
- Who is the assignee on this patent?
- Sumitomo Rubber Ind
- What technology area does this patent fall under?
- Primary CPC classification B65H27/00. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Apr 16 2024 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 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).