Absorbent towel products comprising nanofilaments
AssigneeMercer International Inc.
InventorTobias Ziegenbein
Life of this patent
Estimating the term…
Abstract
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.
Claims20
An absorbent towel paper web comprising:
- (a) from about 45% to about 90% by weight of the dry fiber basis of said absorbent towel paper web of a softwood pulp fiber mixture, said softwood pulp fiber mixture comprising:
- 1) from about 20.0% to about 88.5% by weight of the dry fiber basis of said absorbent towel paper web of softwood pulp fiber;
- and,
- 2) from about 0.05% to about 5.0% by weight of the dry fiber basis of said absorbent towel paper web of strengthening additive;
- and,
- b) from about 10% to about 55% by weight of the dry fiber basis of said absorbent towel paper web of a hardwood pulp fiber mixture, said hardwood pulp fiber mixture comprising:
- 1) from about 9.9% to about 54.9% by weight of the dry fiber basis of said absorbent towel 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 absorbent towel paper web of cellulose nano-filaments.
An absorbent towel paper web comprising:
- a) from about 45% to about 90% by weight of the dry fiber basis of said absorbent towel paper web of a softwood pulp fiber mixture, said softwood pulp fiber mixture comprising:
- 1) from about 20.0% to about 89.9% by weight of the dry fiber basis of said absorbent towel paper web of softwood pulp fiber;
- and,
- 2) from about 0.05% to about 5.0% by weight of the dry fiber basis of said absorbent towel paper web of strengthening additive;
- and,
- b) from about 10% to about 55% by weight of the dry fiber basis of said absorbent towel paper web of a hardwood pulp fiber mixture, said hardwood pulp fiber mixture comprising:
- 1) from about 9.9% to about 49.9% by weight of the dry fiber basis of said absorbent towel paper web of hardwood pulp fiber;
- and,
- 2) from about 0.05% to about 20.0% by weight of the dry fiber basis of said absorbent towel paper web of a blend of micro-cellulose filaments and nano-cellulose filaments, said blend of micro-cellulose filaments and nano-cellulose filaments comprising:
- A) at least about 40% by weight of said blend of micro-cellulose filaments and nano-cellulose filaments of micro-cellulose filaments and nano-cellulose filaments;
- B) at least about 10% by weight of said blend micro-cellulose filaments and nano-cellulose filaments of intact fibrillated fibers;
- and,
- C) at least about 5% by weight of said blend micro-cellulose filaments and nano-cellulose filaments of cellulosic fines.
An absorbent towel paper web comprising:
- a) from about 45% to about 90.0% by weight of said absorbent towel paper web of a soft wood pulp fiber mixture, said soft wood pulp fiber mixture comprising:
- 1) from about 20.0% to about 89.9% by weight of said absorbent towel paper web of soft wood pulp fiber;
- and,
- 2) from about 0.05% to about 5.0% by weight of said absorbent towel paper web of strengthening additive;
- b) from about 10.0% to about 55.0% by weight of said absorbent towel paper web of a 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 absorbent towel paper web of cellulose nano-filaments.
Dependencies are inferred from the claim text.