Paper Making Compositions and Processes Using Protein Particulate, Colloidal Pigment, and Latex Polymer Combinations
AssigneeBuckman Laboratories International, Inc.
InventorGerald M. Dykstra
Life of this patent
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Abstract
A composition for treating paper products comprising protein particulate, colloidal pigment, synthetic latex polymer, and preservative is described, as well as methods and an apparatus using the composition for such treatments, and products obtained thereby. The treated paper products preferably have improved strength, water holdout, and/or ink holdout, amongst other advantages and benefits.
Claims27
A composition for treating paper products comprising protein particulate, colloidal pigment, synthetic latex polymer, and preservative.
A coated paper product produced using an aqueous composition comprising an aqueous dispersion comprising protein particulate, colloidal pigment, synthetic latex polymer, and preservative, wherein the composition is applied to at least one surface of a base paper sheet at a coating rate of from about 0.5 g/m2 to about 40 g/m2, on a dry weight basis.
A treated paper product made from a drained paper web, said paper web comprising a treated pulp, said treated pulp comprising cellulosic fibers, protein particulate, colloidal pigment, synthetic latex polymer, and preservative.
A papermaking apparatus comprising a supply of a composition comprising protein particulate, colloidal pigment, latex polymer, and preservative;
- a supply of a papermaking pulp;
- a screen for collecting pulp;
- a paper sheet forming device receiving pulp from the screen and forming paper sheeting therefrom;
- a coater device receiving the paper sheeting and applying a coating to a surface thereof;
- wherein the supply of the composition feeds the composition to at least one of the supply of papermaking pulp to provide treated pulp and/or the coating device for forming a surface-coated paper sheeting.
Dependencies are inferred from the claim text.