Soft tissue having reduced hydrogen bonding
AssigneeKimberly-Clark Worldwide, Inc.
InventorsJeongKyung Kim, SeungRim Yang, Jian Qin, Deborah Joy Calewarts
Life of this patent
Estimating the term…
Abstract
The present invention provides a modified cellulosic fiber having reduced hydrogen bonding capabilities. The modified fiber formed in accordance with the present invention may be useful in the production of tissue products having improved bulk and softness. More importantly, the modified fiber is adaptable to current tissue making processes and may be incorporated into a tissue product to improve bulk and softness without an unsatisfactory reduction in tensile.
Claims20
A method of increasing the bulk of a tissue web comprising the steps of treating the cellulosic fiber with a caustic agent thereby forming a treated cellulosic fiber in an aqueous-alkaline solution having a pH from greater than about 9.0;
- reacting the treated cellulosic fiber with a cyanuric halide having general Formula (I) in the presence of an organic solvent:
- where R=chlorine, bromine, fluorine or iodine thereby forming a modified cellulosic fiber;
- washing the modified cellulosic fiber;
- and forming a tissue web from the washed modified cellulosic fiber, wherein the tissue web has a basis weight greater than about 10 grams per square meter (gsm) and a sheet bulk greater than about 6 cc/g.
A tissue web comprising modified wood pulp fibers having a nitrogen content greater than about 0.2 weight percent, the tissue web having a basis weight from about 10 to about 60 gsm and a sheet bulk greater than about 10 cc/g.
A hydraulically entangled nonwoven fabric comprising synthetic fibers and modified wood pulp fibers having a nitrogen content greater than about 0.2 weight percent.
Dependencies are inferred from the claim text.