Discrete cell arrangements
US-2024003091-A1 · Jan 4, 2024 · US
Nanocellulose-reinforced corrugated medium
US10435841B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10435841-B2 |
| Application number | US-201715583208-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 1, 2017 |
| Priority date | May 3, 2016 |
| Publication date | Oct 8, 2019 |
| Grant date | Oct 8, 2019 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
The present invention provides a pulp product (e.g., paper) comprising cellulose and nanocellulose, wherein the nanocellulose is derived from the cellulose in a mechanical and/or chemical step that is separate from the main pulping process. The pulping process may be thermomechanical pulping or hydrothermal-mechanical pulping, for example. The pulp product is stronger and smoother with the presence of the nanocellulose. The nanocellulose further can function as a retention aid, for a step of forming the pulp product (e.g., in a paper machine). Other embodiments provide a corrugated medium pulp composition comprising cellulose pulp and nanocellulose, wherein the nanocellulose includes cellulose nanofibrils and/or cellulose nanocrystals and the nanocellulose may be hydrophobic. The nanocellulose improves the strength properties of the corrugated medium. In some embodiments, the cellulose pulp is a GreenBox+® pulp and the nanocellulose is derived from the AVAP® process.
First claim
Opening claim text (preview).
What is claimed is: 1. A corrugated medium pulp composition comprising cellulose pulp and nanocellulose, wherein said nanocellulose includes cellulose nanofibrils and/or cellulose nanocrystals, and wherein said nanocellulose is hydrophobic, lignin-coated nanocellulose. 2. The corrugated medium pulp composition of claim 1 , wherein said nanocellulose is present in a concentration of at least about 0.1 wt % of said composition on a dry basis. 3. The corrugated medium pulp composition of claim 2 , wherein said nanocellulose is present in a concentration of at least about 1 wt % of said composition on a dry basis. 4. The corrugated medium pulp composition of claim 3 , wherein said nanocellulose is present in a concentration of at least about 10 wt % of said composition on a dry basis. 5. The corrugated medium pulp composition of claim 1 , wherein said cellulose pulp is a mechanical pulp or a thermomechanical pulp. 6. The corrugated medium pulp composition of claim 1 , wherein said cellulose pulp is a chemical pulp.
Assignees
Inventors
Classifications
with acids, acid salts or acid anhydrides {(D21C3/003 and D21C3/222 take precedence)} · CPC title
by mechanical or physical means · CPC title
with water or steam · CPC title
Chemical or chemomechanical {or chemothermomechanical} pulp · CPC title
Highly hydrated, swollen or fibrillatable fibres · CPC title
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- What does patent US10435841B2 cover?
- The present invention provides a pulp product (e.g., paper) comprising cellulose and nanocellulose, wherein the nanocellulose is derived from the cellulose in a mechanical and/or chemical step that is separate from the main pulping process. The pulping process may be thermomechanical pulping or hydrothermal-mechanical pulping, for example. The pulp product is stronger and smoother with the pres…
- Who is the assignee on this patent?
- Api Ip Holdings Llc, Granbio Intellectual Property Holdings Llc
- What technology area does this patent fall under?
- Primary CPC classification D21H27/40. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Tue Oct 08 2019 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).