Compositions
Compositions such as filled and coated papers may include microfibrillated cellulose and inorganic particulate material.
1. A paper product comprising a functional paper and a coating comprising at least about 5 wt. % of a co-processed microfibrillated cellulose and inorganic particulate material composition, wherein the microfibrillated cellulose has a fibre steepness of from about 20 to about 50.
2. The paper product of claim 1 , wherein the coating comprises at least about 25 wt. % of the co-processed microfibrillated cellulose and inorganic particulate material composition.
3. The paper product of claim 1 , wherein the coating consists essentially of a co-processed microfibrillated cellulose and inorganic particulate material composition.
4. The paper product of claim 1 , wherein the functional paper is selected from the group consisting of white-lined board and linerboard.
5. The paper product of claim 1 , wherein the inorganic particulate material is selected from the group consisting of kaolin, calcium carbonate, talc, and combinations thereof.
6. The paper product of claim 1 , which is suitable for food packaging.
7. A method for coating a paper product comprising: providing at least about 5 wt. % of a co-processed microfibrillated cellulose and inorganic particulate material composition on the paper product to form a coating, wherein the microfibrillated cellulose has a fibre steepness of from about 20 to about 50.
8. The method of claim 7 , wherein the coating comprises at least about 25 wt. % of the co-processed microfibrillated cellulose and inorganic particulate material composition.
9. The method of claim 7 , wherein the coating comprises at least about 35 wt. % of the co-processed microfibrillated cellulose and inorganic particulate material composition.
10. The method of claim 7 , wherein the coating consists essentially of a co-processed microfibrillated cellulose and inorganic particulate material composition.
11. The method of claim 7 , wherein the paper product is selected from the group consisting of white-lined board and linerboard.
12. The method of claim 7 , wherein the inorganic particulate material is selected from the group consisting of kaolin, calcium carbonate, talc, and combinations thereof.
13. The method of claim 7 , wherein the providing is performed by a curtain coater.
14. A method of increasing at least one of the following properties in a paper product:
i) gloss;
ii) stiffness; and
iii) a barrier property,
wherein the method comprises coating the paper product with at least about 5 wt. % of a co-processed microfibrillated cellulose and inorganic particulate material composition on the paper product instead of a coating composition devoid of the co-processed microfibrillated cellulose and inorganic particulate material composition, wherein the microfibrillated cellulose has a fibre steepness of from about 20 to about 50.
15. The method of claim 14 , wherein the method comprises coating the paper product with at least about 25 wt. % of a co-processed microfibriilated cellulose and inorganic particulate material composition on the paper product.
16. The method of claim 14 , wherein the method comprises coating the paper product with at least about 35 wt. % of a co-processed microfibrillated cellulose and inorganic particulate material composition on the paper product.
17. The method of claim 14 , wherein the paper product is selected from the group consisting of white-lined board and linerboard.
18. The method of claim 14 , wherein the inorganic particulate material is selected from the group consisting of kaolin, calcium carbonate, talc, and combinations thereof.
19. The method of claim 14 , wherein the coating is performed by a curtain coater.
20. The paper product of claim 1 , wherein the coating comprises at least about 35 wt. % of the co-processed microfibrillated cellulose and inorganic particulate material composition.