Fiber blend having high yield and enhanced pulp performance and method for making same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 28, 2018
Grant Date -
Jul 30, 2015
app pub date -
Apr 6, 2015
filing date -
Jun 12, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present disclosure relates to producing paper or paperboard having improved stiffness and strength, compared to the conventional paperboard at the same basis weight. It also discloses a method of wood pulping having a significantly increased yield and providing fiber pulps with enhanced properties such as strength and stiffness. Wood chips are chemically pulped to a high kappa number, providing a rejects component and an accepts component. The rejects component is subjected to a substantially mechanical pulping process, optionally in a presence of bleaching agent, prior to blending back into the accepts component. The resulting fiber blend is washed, optionally bleached, and subjected to a papermaking process to provide paper or paperboard with enhanced strength and stiffness at low basis weight.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2015 Application Filing Year
- D21B Class
- 47 Applications Filed
- 35 Patents Issued To-Date
- 74.47 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- D21B Class
- 57.14 % this patent is cited more than
- 7 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Feb 28, 2026 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Feb 28, 2030 |
