公开(公告)号：US20200024412A1

公开(公告)日：2020-01-23

申请号：US16587111

申请日：2019-09-30

Applicant: Mercer International Inc.

Inventor： Tobias Ziegenbein

IPC: C08J5/18 ,  C08L1/06 ,  D21H11/04 ,  D21H11/20 ,  D21H13/02 ,  D21H17/25 ,  D21H21/20 ,  D21H27/00 ,  D21H27/34 ,  D21H27/30 ,  D21H21/18 ,  D21H15/06 ,  D21H11/18 ,  D21H11/00

Abstract: 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.

公开(公告)号：US20230323606A1

公开(公告)日：2023-10-12

申请号：US18333317

申请日：2023-06-12

Applicant: MERCER INTERNATIONAL INC

Inventor： Tobias Ziegenbein

IPC: D21H27/30 ,  D21H11/08 ,  D21H11/18 ,  D21H15/02 ,  D21H27/00 ,  D21F11/14 ,  D21H11/02 ,  D21H17/44 ,  D21H21/20 ,  B32B29/00

CPC classification number: D21H27/30 ,  B32B2554/00 ,  D21H11/18 ,  D21H15/02 ,  D21H27/002 ,  D21F11/14 ,  D21H11/02 ,  D21H17/44 ,  D21H21/20 ,  D21H27/005 ,  B32B29/005 ,  B32B2250/02 ,  B32B2307/54 ,  B32B2317/12 ,  D21H11/08

Abstract: A differential density absorbent towel paper product comprising at least one absorbent towel paper web is disclosed. The absorbent towel paper web has: (a) from about 20% to about 90% by weight of the dry fiber basis of the absorbent towel paper web of a refined soft wood pulp fiber mixture, (b) pulp fibers selected from the group consisting of hard wood fibers, non-wood fibers, recycled fibers, synthetic polymer fibers, bleached eucalyptus kraft fibers, and combinations thereof and, (c) not more than about 10% by weight moisture. The refined soft wood pulp fiber mixture has: i) from about 18.5% to about 88.5% by weight of soft wood pulp fiber; ii) from about 0.25% to about 5.0% by of cationic strengthening polymer; and, iii) from about 0.05% to about 20% by weight of cellulose nano-filaments.

公开(公告)号：US10682021B2

公开(公告)日：2020-06-16

申请号：US16587096

申请日：2019-09-30

Applicant: Mercer International Inc.

Inventor： Tobias Ziegenbein

IPC: A47K10/16 ,  D21H11/00 ,  B32B21/13 ,  B32B29/00 ,  D21H21/52 ,  B32B23/10 ,  B32B5/26 ,  B32B7/12 ,  D21H27/00 ,  D21H11/18 ,  D21H27/30 ,  D21H23/76 ,  B82Y40/00 ,  D21C9/00 ,  B82Y99/00

Abstract: A differential density soft sanitary tissue paper web comprising at least one ply. The differential density soft sanitary tissue paper web comprises from about 2% to about 56.5% of a softwood pulp fiber mixture and from about 43.5% to about 99.9% of a hardwood pulp fiber mixture. The softwood pulp fiber mixture comprises from about 0% to about 56.4% of softwood pulp fiber; from about 0.05% to about 20.0% of cellulose nanofilaments; and, from about 0.05% to about 3.0% of strengthening additive.

公开(公告)号：US10570261B2

公开(公告)日：2020-02-25

申请号：US15637048

申请日：2017-06-29

Applicant: Mercer International Inc.

Inventor： Tobias Ziegenbein

IPC: D21H11/18 ,  D21H21/52 ,  D21H23/76 ,  D21H27/00 ,  D21H27/30 ,  C08J5/18 ,  C08L1/06 ,  D21H11/04 ,  D21H11/20 ,  D21H13/02 ,  D21H17/25 ,  D21H21/20 ,  D21H11/00 ,  D21H15/06 ,  D21H27/34 ,  D21H21/18 ,  B23B5/26 ,  D21C9/00 ,  A47K10/16 ,  B32B23/10 ,  B82Y40/00 ,  B82Y99/00

Abstract: A process for making absorbent towel paper webs is provided. The process comprises the steps of (a) providing a papermaking furnish having 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 having from about 20.0% to about 88.5% by weight of softwood pulp fiber and from about 0.05% to about 5.0% by weight of strengthening additive 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 having from about 9.9% to about 54.9% by weight of hardwood pulp fibers and from about 0.05% to about 20.0% by weight cellulose nanofilaments; (b) forming a wet fibrous web from the paper making furnish; and, (c) drying the web until the web contains not more than about 10% by weight moisture.

公开(公告)号：US20200022537A1

公开(公告)日：2020-01-23

申请号：US16587096

申请日：2019-09-30

Applicant: Mercer International Inc.

Inventor： Tobias Ziegenbein

IPC: A47K10/16 ,  D21H11/00 ,  B32B21/13 ,  B32B29/00 ,  D21H21/52 ,  B32B23/10 ,  B32B5/26 ,  B32B7/12 ,  D21H27/00 ,  D21H11/18 ,  D21H27/30 ,  D21C9/00 ,  D21H23/76

Abstract: A soft sanitary tissue paper web comprising at least one ply is disclosed. The soft sanitary tissue paper web comprises 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. The softwood pulp fiber mixture comprises from about 0% to about 56.4% by weight of the dry fiber basis of the soft sanitary tissue paper web of softwood pulp fiber; from about 0.05% to about 20.0% by weight of the dry fiber basis of the soft sanitary tissue paper web of cellulose nanofilaments; and, from about 0.05% to about 3.0% by weight of the dry fiber basis of the soft sanitary tissue paper web of strengthening additive.

公开(公告)号：US20190316293A1

公开(公告)日：2019-10-17

申请号：US16383459

申请日：2019-04-12

Applicant: Mercer International Inc.

Inventor： Tobias Ziegenbein

IPC: D21C5/00 ,  D21H11/16 ,  D01G5/00 ,  D01F2/00

Abstract: A process for improving high aspect ratio cellulose filament blends comprising the steps of: a) providing a blend of cellulose nano-filaments or blend of cellulose micro-filaments; b) diluting the blend of cellulose nano-filaments or the blend of cellulose micro-filaments to a target consistency; c) fractionating the diluted blend of cellulose nano-filaments or the diluted blend of cellulose micro-filaments from the step c); and, d) collecting the fraction of the diluted blend of cellulose nano-filaments or the diluted blend of cellulose micro-filaments from the step c) having an average length of greater than at least about 25 μm.

公开(公告)号：US20180187377A1

公开(公告)日：2018-07-05

申请号：US15708241

申请日：2017-09-19

Applicant: Mercer International Inc.

Inventor： Tobias Ziegenbein

IPC: D21H27/00 ,  D21H21/20 ,  D21H17/44

CPC classification number: D21H27/30 ,  B32B29/005 ,  B32B2250/02 ,  B32B2307/54 ,  B32B2317/12 ,  B32B2554/00 ,  D21F11/14 ,  D21H11/02 ,  D21H11/08 ,  D21H11/18 ,  D21H15/02 ,  D21H17/44 ,  D21H21/20 ,  D21H27/002 ,  D21H27/005

Abstract: An absorbent towel paper web having a machine direction and a cross-machine direction orthogonal to the machine direction, the web comprising from about 20% to about 90% by weight of the dry fiber basis of the paper web of a refined soft wood pulp fiber mixture comprising from about 18.5% to about 88.5% by weight of the dry fiber basis of the tissue paper web of soft wood pulp fiber, wherein the soft wood pulp fiber is optionally refined before being added to the mixture; from about 0.25% to about 5.0% by weight of the dry fiber basis of the tissue paper web of cationic strengthening polymer, from about 10% to about 60% by weight of the dry fiber basis of the tissue paper web of a hard wood pulp fiber mixture; and not more than about 8% by weight moisture; wherein the paper web has a Mean Square Tensile Strength ranging from about 6 N·m/g to about 12 N·m/g; and wherein the paper web has a Cross-directional Wet Tensile Strength to Cross-directional Dry Tensile Strength Ratio value ranging from about 0.295 to about 0.35.

公开(公告)号：US20180002864A1

公开(公告)日：2018-01-04

申请号：US15637153

申请日：2017-06-29

Applicant: Mercer International Inc.

Inventor： Tobias Ziegenbein

IPC: D21B1/38 ,  D21H17/25 ,  D21H11/20 ,  C08J5/18 ,  D21D1/20 ,  C08L1/02 ,  D21H27/00 ,  D21H11/18 ,  D01B9/00

Abstract: An absorbent towel paper web product produced by a paper making process that introduces differential density within the fibrous web and comprises from about 0.05 percent to about 20.0 percent by weight of the dry fiber basis of the paper web product with cellulose nanofilaments.