A soft sanitary tissue paper web having from about 2% to about 56.5% by weight of the soft sanitary tissue paper web of a softwood pulp fiber mixture, and from about 43.5% to about 99.9% by weight of the dry fiber basis of the soft sanitary tissue paper web of a hardwood pulp fiber mixture is disclosed. The softwood pulp fiber mixture has: 1) from about 0% to about 56.4% by weight of the dry fiber basis of softwood pulp fiber; 2) from about 0.05% to about 3.0% by weight of the dry fiber basis of strengthening additive. The hardwood pulp fiber mixture comprises: 1) from about 43.4% to about 99.4% by weight of the dry fiber basis of hardwood pulp fibers; and, 2) from about 0.05% to about 20.0% by weight of the dry fiber basis of cellulose nano-filaments.

An absorbent towel paper web having from about 45% to about 90% by weight of the dry fiber basis of the absorbent towel paper web of a softwood pulp fiber mixture and from about 10% to about 55% by weight of the dry fiber basis of the absorbent towel paper web of a hardwood pulp fiber mixture is disclosed. The softwood pulp fiber mixture has: 1) from about 20.0% to about 88.5% by weight of the dry fiber basis of softwood pulp fiber; and, 2) from about 0.05% to about 5.0% by weight of the dry fiber basis of strengthening additive. The hardwood pulp fiber mixture has: 1) from about 9.9% to about 54.9% by weight of the dry fiber basis of hardwood pulp fibers; and, 2) from about 0.05% to about 20.0% by weight of the dry fiber basis of cellulose nano-filaments.

An absorbent towel paper web having from about 45% to about 90% by weight of the dry fiber basis of the absorbent towel paper web of a softwood pulp fiber mixture and from about 10% to about 55% by weight of the dry fiber basis of the absorbent towel paper web of a hardwood pulp fiber mixture is disclosed. The softwood pulp fiber mixture has: 1) from about 20.0% to about 88.5% by weight of the dry fiber basis of softwood pulp fiber; and, 2) from about 0.05% to about 5.0% by weight of the dry fiber basis of strengthening additive. The hardwood pulp fiber mixture has: 1) from about 9.9% to about 54.9% by weight of the dry fiber basis of hardwood pulp fibers; and, 2) from about 0.05% to about 20.0% by weight of the dry fiber basis of cellulose nano-filaments.

The present invention provides a foam having a surface which solates or gelates after absorption of water and appropriately absorbs the water. The foam is prepared by a foam reaction of a mixture comprising at least one polyol, a compound having at least one isocyanate group, and a hydrophilic polymer.

Cellulose II nanocrystal particles have a crystallinity 80%, a number-average molecular weight ranging from 1200 to 2500, and a molecular weight distribution coefficient Mw/Mn1.30. The cellulose II nanocrystal particles can be prepared by: subjecting a cellulose raw material to an amorphization reconstitution and then to a crystallization acidolysis. The crystallization acidolysis may be carried out under a low concentration acidic condition. The method enables high efficient and clean production and quality control of cellulose nanocrystal materials.

Processes for making absorbent towel paper webs comprising the steps of (a) providing a papermaking furnish comprising: i) from about 45% to about 90% by weight of the dry fiber basis of the tissue towel paper web of a refined softwood pulp fiber mixture comprising: u.) from about 20.0% to about 88.5% by weight of the dry fiber basis of the absorbent towel paper web of softwood pulp fiber, wherein the softwood pulp fiber is optionally refined before being added to the mixture; v.) from about 0.05% to about 5.0% by weight of the dry fiber basis of the absorbent towel paper web of strengthening additive, ii) from about 10% to about 55% by weight of the dry fiber basis of the absorbent towel paper web of a hardwood pulp fiber mixture comprising; y.) from about 9.9% to about 54.9% by weight of the dry fiber basis of the absorbent towel paper web of hardwood pulp fibers; and z.) from about 0.05% to about 20.0% by weight of the dry fiber basis of the absorbent towel paper web of cellulose nanofilaments; iii) optionally up to about 20% by weight of the dry fiber basis of the absorbent towel of a fibrillated manmade cellulose; and iv) optionally up to about 20% by weight of the dry fiber basis of the absorbent towel of non-wood natural fibers; v) optionally up to about 20% by weight of the dry fiber basis of the absorbent towel of non-cellulosic fibers; and (b) forming a wet fibrous web from said paper making furnish; (c) drying said web until said web contains not more than about 10% by weight moisture.

Processes for making absorbent towel paper webs comprising the steps of (a) providing a papermaking furnish comprising: i) from about 45% to about 90% by weight of the dry fiber basis of the tissue towel paper web of a refined softwood pulp fiber mixture comprising: u.) from about 20.0% to about 88.5% by weight of the dry fiber basis of the absorbent towel paper web of softwood pulp fiber, wherein the softwood pulp fiber is optionally refined before being added to the mixture; v.) from about 0.05% to about 5.0% by weight of the dry fiber basis of the absorbent towel paper web of strengthening additive, ii) from about 10% to about 55% by weight of the dry fiber basis of the absorbent towel paper web of a hardwood pulp fiber mixture comprising; y.) from about 9.9% to about 54.9% by weight of the dry fiber basis of the absorbent towel paper web of hardwood pulp fibers; and z.) from about 0.05% to about 20.0% by weight of the dry fiber basis of the absorbent towel paper web of cellulose nanofilaments; iii) optionally up to about 20% by weight of the dry fiber basis of the absorbent towel of a fibrillated manmade cellulose; and iv) optionally up to about 20% by weight of the dry fiber basis of the absorbent towel of non-wood natural fibers; v) optionally up to about 20% by weight of the dry fiber basis of the absorbent towel of non-cellulosic fibers; and (b) forming a wet fibrous web from said paper making furnish; (c) drying said web until said web contains not more than about 10% by weight moisture.