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AssigneeNorth Carolina State University
InventorsRonalds W. GONZALEZ, Franklin J. ZAMBRANO, Hasan JAMEEL, Richard A. VENDITTI, Lokendra PAL
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Tissue paper of the disclosure exhibits advantageous softness and bulk at a basis weight less than that of basis weights found in currently available commercial tissue products, while delivering adequate strength for machine runability and consumer usage. This tissue is a lightweight paper that comprises a fiber core with up to 60% mechanically fibrillated fibers and a retention or drainage aid such as a cationic polyacrylamide polymer that facilitates drainage, softness, and bulk. This approach can reduce the fiber content of tissue products significantly while delivering the desired strength and other critical properties.
A cellulose fiber slurry for use in the manufacture of a tissue paper, the cellulose fiber slurry comprising cellulose fibers that have been subjected to (i) mechanical or chemical fibrillation of between about 1% to about 60% fiber dry weight of the cellulose fiber to a freeness level between about 50 mL Canadian Standard Freeness (CSF) and about 390 mL CSF or (ii) conversion to micro- and nanofibrillated cellulose of about 0.10% to about 30% fiber dry weight of the cellulose fibers;
A method to manufacture a tissue paper, the method comprising the steps of:
A tissue paper, wherein the tissue paper has a basis weight of from about 7 to about 54.6 g/m2;
(canceled)
Dependencies are inferred from the claim text.