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US 2019/0055696 A1Published application
Compositions and methods for treating filler in papermaking
AssigneeEcolab USA Inc.
InventorQinglong RAO
Life of this patent
Estimating the term…
Abstract
Method of papermaking comprises: treating filler with a starch and a flocculant to form a filler floc; combining the filler floc with the cellulose fiber stock; and forming a paper mat from the combination of filler floc and cellulose fiber stock. The method have been found to result in larger particle sizes for the filler flocs, improved shear stability, and improved sheet strength in the paper mat.
Claims20
A method of papermaking comprising:
- a. treating filler with a starch and a cationic flocculant to form a filler floc;
- b. combining the filler floc with the cellulose fiber stock;
- and
- c. forming a paper mat from the combination of filler floc and cellulose fiber stock.
1 more element
Dependencies are inferred from the claim text.