Method for producing furnish, furnish and paper
AssigneeUpm-Kymmene Corporation
InventorsJanne LAINE, Monika Österberg, Delphine Miquel, Leila Pohjola, Irmeli Sinisalo, Harri Kosonen
Life of this patent
Estimating the term…
Abstract
A method for preparing aqueous furnish to be used in paper or paper board manufacturing. Filler and/or fibers are treated with cationic polyelectrolyte and nanofibrillated cellulose. The strength of the paper and the retention of the fillers in paper can be improved. A furnish prepared by a method, and a paper or a paper board manufactured from the furnish.
Claims13
1-8. (canceled)
A method for preparing aqueous furnish to be used in paper or paper board manufacturing, the method comprising:
- treating at least filler and fibers with cationic polyelectrolyte and nanofibrillated cellulose, wherein one of the filler and the fibers is treated with cationic polyelectrolyte and another of the filler and the fibers is treated with nanofibrillated cellulose;
- and
- combining the treated filler and the treated fibers.
A furnish prepared by a method comprising:
- treating at least filler and fibers with cationic polyelectrolyte and nanofibrillated cellulose, wherein one of the filler and the fibers is treated with cationic polyelectrolyte and another of the filler and the fibers is treated with nanofibrillated cellulose;
- and
- combining the treated filler and the treated fibers.
A paper or paper board manufactured from furnish prepared by a method comprising:
- treating at least filler and fibers with cationic polyelectrolyte and nanofibrillated cellulose, wherein one of the filler and the fibers is treated with cationic polyelectrolyte and another of the filler and the fibers is treated with nanofibrillated cellulose;
- and
- combining the treated filler and the treated fibers.
Dependencies are inferred from the claim text.