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US 2017/0314204 A1Published application
Method for producing paper
AssigneeKemira Oyj
InventorsChen LU, Junhua Chen, Clay Campbell, Scott Rosencrance, Jenna Sue Rabideau
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Abstract
A method for manufacturing paper is disclosed. A pulp slurry is produced, a paper sheet is formed from the slurry, an aldehyde functionalized polymer or polymers in combination with at least one additional strength additive is added to the slurry before and/or after sheet formation, and a water soluble acid is added on the paper sheet.
Claims37
A method for manufacturing paper, which comprises:
- producing a pulp slurry;
- forming a paper sheet from the pulp slurry;
- adding at least one aldehyde functionalized polymer in combination with at least one additional strength additive to said pulp slurry before and/or after the paper sheet formation;
- adding at least one water soluble acid onto the formed paper sheet.
1 more element
Dependencies are inferred from the claim text.