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US 2018/0051416 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 is added to the slurry before and/or after sheet formation, and a water soluble acid is added on the paper sheet.
Claims36
A method for manufacturing paper, comprising:
- producing a pulp slurry;
- forming a paper sheet from the pulp slurry;
- adding at least one aldehyde functionalized polymer to said pulp slurry before and/or after the paper sheet formation;
- and
- adding water soluble acid having a relative acidity (RA) value greater than 0.05 g/kg dry paper onto the formed paper sheet.
2 more elements
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Dependencies are inferred from the claim text.