Nanocellulose-reinforced corrugated medium
US-2017328003-A1 · Nov 16, 2017 · US
Fiber blend, method for producing fiber blend, and paperboard product comprising fiber blend
US11629460B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11629460-B2 |
| Application number | US-202117183623-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 24, 2021 |
| Priority date | Aug 10, 2018 |
| Publication date | Apr 18, 2023 |
| Grant date | Apr 18, 2023 |
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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.
A fiber blend includes a first amount of wood pulp fibers refined in an amount of at least about 150 kWh per metric ton of gross refining energy, and a second amount of wood pulp fibers refined in an amount of at most about 10 kWh per metric ton of gross refining energy.
First claim
Opening claim text (preview).
What is claimed is: 1. A fiber blend comprising: a first amount of wood pulp fibers refined in an amount of at least about 150 kWh per metric ton of gross refining energy, wherein the first amount of wood pulp fibers are characterized by extensive fiber damage; and a second amount of wood pulp fibers refined in an amount of at most about 10 kWh per metric ton of gross refining energy, wherein the second amount of wood pulp fibers are characterized by having little or no fiber damage, wherein the fiber blend is a mixture of the first amount of wood pulp fibers with the second amount of wood pulp fibers. 2. The fiber blend of claim 1 wherein the first amount of wood pulp fibers are included in an amount of at least about 5% by volume of the total volume of the fiber blend. 3. The fiber blend of claim 1 wherein the first amount of wood pulp fibers are included in an amount of at most about 40% by volume of the total volume of the fiber blend. 4. The fiber blend of claim 1 wherein the second amount of wood pulp fibers are included in an amount of at least about 60% by volume of the total volume of the fiber blend. 5. The fiber blend of claim 1 wherein the second amount of wood pulp fibers are included in an amount of at most about 95% by volume of the total volume of the fiber blend. 6. The fiber blend of claim 1 wherein the second amount of wood pulp fibers are unrefined. 7. The fiber blend of claim 1 wherein the first amount of wood pulp fibers includes at least one of hardwood fibers, softwood fibers, and recycled fibers. 8. The fiber blend of claim 1 wherein the second amount of wood pulp fibers includes at least one of hardwood fibers, softwood fibers, and recycled fibers. 9. The fiber blend of claim 1 wherein the first amount of wood pulp fibers is produced by chemical pulping. 10. The fiber blend of claim 1 wherein the second amount of wood pulp fibers is produced by chemical pulping. 11. The fiber blend of claim 1 wherein the first amount of wood pulp fibers and the second amount of wood pulp fibers consist essentially of unbleached wood pulp fibers. 12. A paperboard product comprising a fiber blend, the fiber blend comprising: a first amount of wood pulp fibers refined in an amount of at least about 150 kWh per metric ton of gross refining energy, wherein the first amount of wood pulp fibers are characterized by having extensive fiber damage; and a second amount of wood pulp fibers refined in an amount of at most about 10 kWh per metric ton of gross refining energy, wherein the second amount of wood pulp fibers are characterized by having little or no damage, wherein the fiber blend is a mixture of the first amount of wood pulp fibers with the second amount of wood pulp fibers. 13. The paperboard product of claim 12 having a caliper thickness of about 8 to about 30 point. 14. The paperboard product of claim 12 wherein the paperboard product is included in at least one of a beverage board, a liner board, and a corrugated medium. 15. The paperboard product of claim 12 wherein the paperboard product is at least one layer of a multi-ply liner board that comprises an unbleached paperboard layer and a bleached paperboard layer. 16. The paperboard product of claim 12 wherein the first amount of wood pulp fibers are included in an amount of at least about 5% by volume of the total volume of the fiber blend. 17. The paperboard product of claim 12 wherein the first amount of wood pulp fibers are included in an amount of at most about 40% by volume of the total volume of the fiber blend. 18. The paperboard product of claim 12 wherein the second amount of wood pulp fibers are included in an amount of at least about 60% by volume of the total volume of the fiber blend. 19. The paperboard product of claim 12 wherein the second amount of wood pulp fibers are included in an amount of at most about 95% by volume of the total volume of the fiber blend. 20. The paperboard product of claim 12 wherein the second amount of wood pulp fibers are unrefined.
Assignees
Inventors
Classifications
- D21D1/00Primary
Methods of beating or refining; Beaters of the Hollander type (knotter screens D21F) · CPC title
- D21D1/20Primary
Methods of refining · CPC title
Subject matter not provided for in other groups of this subclass · CPC title
Other mechanical treatment of natural fibrous or filamentary material to obtain fibres or filaments · CPC title
Mechanical or thermomechanical pulp · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11629460B2 cover?
- A fiber blend includes a first amount of wood pulp fibers refined in an amount of at least about 150 kWh per metric ton of gross refining energy, and a second amount of wood pulp fibers refined in an amount of at most about 10 kWh per metric ton of gross refining energy.
- Who is the assignee on this patent?
- Westrock Mwv Llc
- What technology area does this patent fall under?
- Primary CPC classification D21D1/00. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Tue Apr 18 2023 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).