Starch and fiber mixture for papermaking and methods of making paper with the mixture
AssigneeCorn Products International, Inc.
InventorsPhilip Strong, Brian Ireland, John Kinney
Life of this patent
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Abstract
The invention relates to a starch and fiber mixture, and the application of a starch and fiber mixture in paper manufacturing. The starch and fiber mixture is applied to a paper mat, after the paper mat is formed. The starch and fiber mixture may be obtained by the selective filtering of white water from the papermaking process, particularly by use of a pressure screen.
Claims12
A starch and fiber mixture in the form of a slurry comprising fiber in an amount of from about 0.01% to about 2.0% by weight of the slurry and uncooked starch in an amount of about 0.1% to about 20% by weight of the slurry, wherein the starch and fiber mixture is applied to a paper mat during the paper making process.
8-17. (canceled)
A process for making a starch and fiber mixture for application to a paper mat during the papermaking process to allow the starch to remain on the paper mat so that the starch is cooked during the paper making process comprising the steps of adding a fiber source to a slurry of uncooked starch, allowing for thorough wet out of the starch and mixing the fiber source and the starch slurry at a temperature of about 32° F. to about 140° F. wherein the starch and fiber mixture does not contain flocculant.
A method of filtering white water obtained from the formation of a paper mat on a wire screen during a papermaking process comprising the steps of providing a pressure screen, filtering the white water from the wire screen in the pressure screen, generating accepts and rejects from the pressure screen wherein the accepts comprise fiber having a particle size, in length, of greater than zero and up to about 0.08 inches.
Dependencies are inferred from the claim text.