Loading patent…
OwnerStephen M. Lindsay, Richmond R. Cohen +2inventors
InventorsStephen M. Lindsay, Richmond R. Cohen, Kenneth R. Schueler, Jr., Kenneth J. Zwick
Estimating the term…
The present disclosure relates to tissue products comprising crosslinked fibers. The tissue products generally have good formation, such as a Formation Index greater than about 20, strength, such as geometric mean tensile strengths greater than about 700 g/3″ and high bulk, such as sheet bulks greater than about 10 cc/g. Unlike many prior art crosslinked fibers, the crosslinked softwood pulps of the present invention, which are preferably prepared using a glyoxal based crosslinking reagent, are readily dispersible in water and have relatively low degrees of kink and curl. As such, the fibers are well suited for forming wet-laid tissue products and more particularly wet-laid tissue products having improved physical properties, such as improved bulk.
A wet-laid tissue product comprising at least one wet-laid tissue web comprising crosslinked softwood fibers and papermaking fibers and having a Formation Index of about 20 or greater, the product having a geometric mean tensile strength (GMT) greater than about 700 g/3″ and a sheet bulk greater than about 10 cc/g;
A single ply through-air dried tissue product comprising crosslinked softwood fibers having a Curl Index of about 0.30 or less and a Kink Index of about 1.50 mm−1 or less and papermaking fibers and having a basis weight from about 20 to about 60 gsm, a sheet bulk of about 12 cc/g and GMT of about 700 g/3″ or greater and a Formation Index of about 20 or greater.
A method of forming a wet-laid tissue product comprising the steps of:
Dependencies are inferred from the claim text.