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US 11,396,199 B2Granted
Inkjet ink receptive coating comprising esterified or etherified starch and laponite
AssigneeStora Enso OYJ
InventorsKaj Backfolk, Katriina Mielonen, Sami Ovaska
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Abstract
A method of manufacturing a paper or paperboard with improved printing properties, which method comprises the steps of, providing a paper or paperboard substrate, comprising cellulosic fibres, providing a coating composition comprising a mixture of an esterified or etherified starch and a inorganic mineral; and coating at least one surface of said substrate with at least one layer of said coating composition.
Claims9
A method of manufacturing a paper or paperboard with improved printing properties, which method comprises the steps of;
- providing a paper or paperboard substrate, comprising cellulosic fibres;
- providing a coating composition consisting of a solvent, an esterified or etherified starch, and an inorganic mineral wherein the inorganic mineral comprises Laponite, wherein the esterified or etherified starch is selected from the group consisting of hydroxypropylated starch, hydroxyethyl starch, or combinations or modifications of any of these;
- and
- forming an ink receptive coating on said substrate by coating at least one surface of said substrate with at least one layer of said coating composition,
- wherein a proportion of said Laponite in said coating composition, relative to the esterified or etherified starch, is less than 50% (pph).
2 more elements
Dependencies are inferred from the claim text.