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US 2010/0163200 A1Published application
Method for making readily defibered pulp product
AssigneeWeyerhaeuser Company
InventorsMichael J. Dougherty, Amar Neogi, Harshadkumar M. Shah, Andrew J. Campbell
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Abstract
A wet-laid wood pulp product containing cellulose pulp fibers and elongate precipitated calcium carbonate having a diameter of 0.015 to 0.6 microns at its maximum diameter and a length of 1 to 10 microns and the calcium carbonate being incorporated within the sheet and a method for making the product.
Claims10
A method of making a wet laid cellulose pulp sheet comprising
- providing cellulose pulp fibers to a headbox,
- providing elongate precipitated calcium carbonate having a diameter of 0.015 to 0.6 microns at its maximum diameter and a length of 1 to 10 microns to the headbox.
- forming a wet sheet comprising the cellulose pulp fibers and the elongate precipitated calcium carbonate,
- dewatering and drying the sheet to form a wet-laid pulp sheet incorporating within the sheet the elongate nano or near nano precipitated calcium carbonate.
1 more element
Dependencies are inferred from the claim text.