Sanitary tissue products comprising nanofilaments
First Claim
1. A differential density soft sanitary tissue paper web comprising:
- a) from about 2% to about 56.5% by weight of said differential density soft sanitary tissue paper web of a softwood pulp fiber mixture, said softwood pulp fiber mixture comprising;
1) from about 0% to about 56.4% by weight of the dry fiber basis of said differential density soft sanitary tissue paper web of softwood pulp fiber;
2) from about 0.05% to about 3.0% by weight of the dry fiber basis of said differential density soft sanitary tissue paper web of strengthening additive; and
,b) from about 43.5% to about 99.9% by weight of the dry fiber basis of said differential density soft sanitary tissue paper web of a hardwood pulp fiber mixture, said hardwood pulp fiber mixture comprising;
1) from about 43.4% to about 99.4% by weight of the dry fiber basis of said differential density soft sanitary tissue paper web of hardwood pulp fibers; and
,2) from about 0.05% to about 20.0% by weight of the dry fiber basis of said differential density soft sanitary tissue paper web of cellulose nano-filaments.
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Accused Products
Abstract
A differential density soft sanitary tissue paper web having from about 2% to about 56.5% by weight of the differential density 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 differential density soft sanitary tissue paper web of a hardwood pulp fiber mixture is provided. 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.
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Citations
20 Claims
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1. A differential density soft sanitary tissue paper web comprising:
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a) from about 2% to about 56.5% by weight of said differential density soft sanitary tissue paper web of a softwood pulp fiber mixture, said softwood pulp fiber mixture comprising; 1) from about 0% to about 56.4% by weight of the dry fiber basis of said differential density soft sanitary tissue paper web of softwood pulp fiber; 2) from about 0.05% to about 3.0% by weight of the dry fiber basis of said differential density soft sanitary tissue paper web of strengthening additive; and
,b) from about 43.5% to about 99.9% by weight of the dry fiber basis of said differential density soft sanitary tissue paper web of a hardwood pulp fiber mixture, said hardwood pulp fiber mixture comprising; 1) from about 43.4% to about 99.4% by weight of the dry fiber basis of said differential density soft sanitary tissue paper web of hardwood pulp fibers; and
,2) from about 0.05% to about 20.0% by weight of the dry fiber basis of said differential density soft sanitary tissue paper web of cellulose nano-filaments. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A differential density soft sanitary tissue paper web comprising:
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a) from about 2% to about 56.5% by weight of said differential density soft sanitary tissue paper web of a softwood pulp fiber mixture, said softwood pulp fiber mixture comprising; 1) from about 0% to about 56.4% by weight of said differential density soft sanitary tissue paper web of softwood pulp fiber; and
,2) from about 0.05% to about 3.0% by weight of said differential density soft sanitary tissue paper web of cationic strengthening polymer; b) from about 43.5% to about 99.9% by weight of said differential density soft sanitary tissue paper web of a hardwood pulp fiber mixture, said hardwood pulp fiber mixture comprising hardwood pulp fibers; and
,c) from about 0.05% to about 20.0% by weight of the dry fiber basis of said differential density soft sanitary tissue paper web of cellulose nano-filaments. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A differential density soft sanitary tissue paper web comprising:
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(a) from about 2% to about 56.5% by weight of by weight of the dry fiber basis of said differential density soft sanitary tissue paper web of a softwood pulp fiber mixture, said softwood pulp fiber mixture comprising; 1) from about 0% to about 56.4% by weight of the dry fiber basis of said differential density soft sanitary tissue paper web of softwood pulp fiber; and
,2) from about 0.05% to about 3.0% by weight of the dry fiber basis of said differential density soft sanitary tissue paper web of strengthening additive; and
,b) from about 43.5% to about 99.9% by weight of the by weight of the dry fiber basis of said differential density soft sanitary tissue paper web of a hardwood pulp fiber mixture, said hardwood pulp fiber mixture comprising; 1) from about 43.4% to about 99.4% by weight of the dry fiber basis of said differential density soft sanitary tissue paper web of hardwood pulp fibers; and 2) from about 0.05% to about 20.0% by weight of the by weight of the dry fiber basis of said differential density soft sanitary tissue paper web of a blend of cellulose micro-filaments and cellulose nano-filaments, said blend of cellulose micro-filaments and cellulose nano-filaments comprising; A) at least about 50% by weight of said blend of cellulose micro-filaments and cellulose nano-filaments of cellulose micro-filaments and cellulose nano-filaments; B) at least about 10% by weight of said blend of cellulose micro-filaments and cellulose nano-filaments of intact fibrillated fibers; and
,C) at least about 5% by weight of said blend of cellulose micro-filaments and cellulose nano-filaments of cellulosic fines.
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Specification