Nanocellulose-reinforced corrugated medium
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United States of America Patent
Stats
-
Sep 3, 2024
Grant Date -
Jan 5, 2023
app pub date -
Jun 10, 2022
filing date -
Jun 10, 2022
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
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
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International Classification(s)
- 2022 Application Filing Year
- D21H Class
- 351 Applications Filed
- 90 Patents Issued To-Date
- 25.65 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- D21H Class
- 0 % this patent is cited more than
- 1 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Mar 3, 2028 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Mar 3, 2032 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Mar 3, 2036 |
