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1. 发明公开

US20240175211A1 SYSTEMS AND METHODS FOR PRODUCTION OF STARCH-LOADED FIBRILLATED FIBERS 审中-公开
公开(公告)号：US20240175211A1
公开(公告)日：2024-05-30
申请号：US18511020
申请日：2023-11-16
申请人： Domtar Paper Company, LLC
发明人： Harshad Pande , Lindsey Clifton
IPC分类号： D21H17/28 , D21H11/18 , D21H21/18 , D21H23/04
CPC分类号： D21H17/28 , D21H11/18 , D21H21/18 , D21H23/04
摘要： A method of making a pulp composition having improved strength characteristics is disclosed. The method includes mixing together a starch and fibrillated fibers to produce a starch/fibrillated fibers mixture, and mixing the starch/fibrillated fibers mixture into wood pulp fibers to produce the pulp composition.

2. 发明公开

US20240010392A1 PAPER RETAIL BAG 审中-公开
公开(公告)号：US20240010392A1
公开(公告)日：2024-01-11
申请号：US17858777
申请日：2022-07-06
申请人： DOMTAR PAPER COMPANY, LLC
发明人： Jonathan Zayat , Jae Young Jeon , Andrew Johansen , Brent Lindberg
IPC分类号： B65D33/14 , B65D33/12 , B65D33/06 , B65D33/08 , B65D30/00 , B65D30/20 , B31B70/14 , B31B70/20
CPC分类号： B65D33/14 , B65D33/12 , B65D33/065 , B65D33/08 , B65D31/005 , B65D31/10 , B31B70/148 , B31B70/20 , B31B2150/001
摘要： The present disclosure includes paper bags and methods for forming paper bags. Some of the bags may include a body, a first attachment portion configured to engage an arm of a bag holder, and a second attachment portion configured to engage another arm of the bag holder. In some aspects, the body defines an opening and includes opposing first and second sides, a first section disposed between the first side and the second side, and a second section disposed between the first and second sides, the second section moveable relative to the first section to define a cavity that is in communication with the opening. The first attachment portion may be closer to the first side of the body than the second side and the second attachment portion may be closer to the second side of the body than the first side.

3. 发明申请

US20230035105A1 SURFACE ENHANCED PULP FIBERS AT A SUBSTRATE SURFACE 有权
公开(公告)号：US20230035105A1
公开(公告)日：2023-02-02
申请号：US17967359
申请日：2022-10-17
申请人： DOMTAR PAPER COMPANY, LLC
发明人： Bruno Marcoccia , Harshad Pande , Jacob P. John , Robert Mason WILLIAMS
IPC分类号： D21H23/28 , D21H11/16 , D21H17/28 , D21H15/02 , D21H19/54 , D21H27/30
摘要： A paper product having improved printing characteristics and a method of making the paper product. This paper product has a fibrous substrate and top layer of surface enhanced pulp fibers that is integrally coupled to the top surface of the fibrous substrate. The paper product is produced by providing an aqueous slurry formed from a blend of cellulosic fibers and water and at least partially dewatering the aqueous slurry of cellulosic fibers and water to form the fibrous substrate. Subsequently, a surface treatment formed from an aqueous composition of water and surface enhanced pulp fibers is applied to the top surface of the fibrous substrate and thereafter the treated fibrous substrate is dried to form a paper product having enhanced printing characteristics.

4. 发明授权

US09297111B1 Methods for the manufacture of cellulose nanocrystals 有权
标题翻译：纤维素纳米晶体的制造方法
公开(公告)号：US09297111B1
公开(公告)日：2016-03-29
申请号：US14208759
申请日：2014-03-13
申请人： Domtar Corporation
发明人： Bruno Marcoccia , Michael Edwards , Marvin Duncan Cooper
IPC分类号： D21C9/00 , C01B17/82 , C08B15/08 , D21C5/00 , C13K1/04 , C01B17/90
CPC分类号： D21C9/004 , C01B17/903 , C08B15/08 , C13K1/04 , D21C5/00 , D21C9/04 , D21H11/18
摘要： Embodiments of the present invention relates generally to methods and systems for the manufacture of cellulose nanocrystals. In one embodiment, a method for manufacturing cellulose nanocrystals comprises reacting lignocellulosic fibers with sulfuric acid in water, introducing a water-insoluble solvent to substantially terminate the reaction, separating a first stream comprising at least 70% of the unreacted sulfuric acid in the water-insoluble solvent from a second stream comprising a plurality of cellulose nanocrystals and the remainder of the unreacted sulfuric acid in water, and separating the cellulose nanocrystals from the second stream.
摘要翻译：本发明的实施方案一般涉及用于制造纤维素纳米晶体的方法和系统。在一个实施方案中，制备纤维素纳米晶体的方法包括使木质纤维素纤维与硫酸在水中反应，引入水不溶性溶剂以基本上终止反应，将含有至少70％的未反应的硫酸的第一物流在水 - 来自包含多个纤维素纳米晶体的第二流的不溶性溶剂和在水中的其余未反应的硫酸，并将纤维素纳米晶体与第二流分离。

5. 发明授权

US12104324B2 Paper products and pulps with surface enhanced pulp fibers and increased absorbency, and methods of making same 有权
公开(公告)号：US12104324B2
公开(公告)日：2024-10-01
申请号：US17898983
申请日：2022-08-30
申请人： DOMTAR PAPER COMPANY, LLC
发明人： Harshad Pande , Douglas W. Coffin , Mona Alinejad
IPC分类号： D21H11/10 , D21D1/00 , D21H15/02 , D21H25/00 , D21H27/00
CPC分类号： D21H11/10 , D21D1/00 , D21H15/02 , D21H25/005 , D21H27/002 , D21H27/007
摘要： Paper products such as tissues can be made using a furnish comprising surface enhanced pulp fibers (“SEPF”). In some embodiments, SEPF have a weighted average fiber length of at least 0.3 millimeters (mm) and an average hydrodynamic specific surface area of at least 10 square meters per gram (m2/g). In some embodiments, a furnish or a paper product can comprise at least 2% SEPF by dry weight. In some embodiments, a paper product comprising SEPF can be formed from a furnish having a freeness of 650 ml Canadian Standard Freeness (CSF) or less, optionally 600 ml CSF or less.

6. 发明申请

US20220412006A1 PAPER PRODUCTS AND PULPS WITH SURFACE ENHANCED PULP FIBERS AND INCREASED ABSORBENCY, AND METHODS OF MAKING SAME 有权
公开(公告)号：US20220412006A1
公开(公告)日：2022-12-29
申请号：US17898983
申请日：2022-08-30
申请人： DOMTAR PAPER COMPANY,LLC
发明人： Harshad PANDE , Douglas W. COFFIN , Mona ALINEJAD
IPC分类号： D21H11/10 , D21D1/00 , D21H27/00 , D21H25/00 , D21H15/02
摘要： Paper products such as tissues can be made using a furnish comprising surface enhanced pulp fibers (“SEPF”). In some embodiments, SEPF have a weighted average fiber length of at least 0.3 millimeters (mm) and an average hydrodynamic specific surface area of at least 10 square meters per gram (m2/g). In some embodiments, a furnish or a paper product can comprise at least 2% SEPF by dry weight. In some embodiments, a paper product comprising SEPF can be formed from a furnish having a freeness of 650 ml Canadian Standard Freeness (CSF) or less, optionally 600 ml CSF or less.

7. 发明申请

US20220333312A1 Tissues and Paper Towels Incorporating Surface Enhanced Pulp Fibers and Methods of Making the Same 有权
公开(公告)号：US20220333312A1
公开(公告)日：2022-10-20
申请号：US17754087
申请日：2020-09-23
申请人： Domtar Paper Company, LLC
发明人： Bradley Langford , David Lloyd , Brian Ranson , Gwen Johnston , Dale Kavalew
IPC分类号： D21H27/00 , D21D1/20 , D21F11/14 , D21H27/38
摘要： Paper products can comprise a first plurality of fibers that are hardwood fibers and a second plurality of fibers that include softwood fibers and surface enhanced pulp fibers (SEPF). The paper product can include one or more first fiber layers that comprise the first fibers, at least one of the first fiber layer(s) defining one of opposing upper and lower surfaces of the paper product, and one or more second fiber layers that comprise the second fibers. When a tissue, by weight, between 50% and 80% of the tissue's fibers can be the first fibers and at least 20% of the tissue's fibers can be the second fibers. The tissue's basis weight can be less than or equal to 21 gsm per ply.

8. 发明授权

US10975499B2 Surface enhanced pulp fibers, methods of making surface enhanced pulp fibers, products incorporating surface enhanced pulp fibers, and methods of making products incorporating surface enhanced pulp fibers 有权
公开(公告)号：US10975499B2
公开(公告)日：2021-04-13
申请号：US15225292
申请日：2016-08-01
申请人： Domtar Paper Company, LLC
发明人： Harshad Pande , Bruno Marcoccia
IPC分类号： D21H15/02 , D01B9/00 , D21B1/04 , D21D1/26 , D21D1/06 , D21C9/00 , D21D1/20 , D21H11/08 , D21H11/10 , D21H11/16 , D02J3/02 , D21H11/00
摘要： Various embodiments of the present invention relate to surface enhanced pulp fibers, various products incorporating surface enhanced pulp fibers, and methods and systems for producing surface enhanced pulp fibers. Various embodiments of surface enhanced pulp fibers have significantly increased surface areas compared to conventional refined fibers while advantageously minimizing reductions in length following refinement. The surface enhanced pulp fibers can be incorporated into a number of products that might benefit from such properties including, for example, paper products, paperboard products, fiber cement boards, fiber reinforced plastics, fluff pulps, hydrogels, cellulose acetate products, and carboxymethyl cellulose products. In some embodiments, a plurality of surface enhanced pulp fibers have a length weighted average fiber length of at least about 0.3 millimeters and an average hydrodynamic specific surface area of at least about 10 square meters per gram, wherein the number of surface enhanced pulp fibers is at least 12,000 fibers/milligram on an oven-dry basis.

9. 发明授权

US10710930B2 Surface enhanced pulp fibers in fiber cement 有权
公开(公告)号：US10710930B2
公开(公告)日：2020-07-14
申请号：US15120221
申请日：2015-02-20
申请人： Domtar Paper Company, LLC
发明人： Bruno Marcoccia , Harshad Pande , Brian Wester
IPC分类号： C04B18/24 , C04B28/02 , C04B111/40
摘要： The present invention relates to a method of making a fiber-reinforced cementitious composite material which finds widespread applicability in a variety of construction and related applications. The composite comprises cellulosic fibrous material in order to provide the composite with the desired performance characteristics. Notably, at least a portion of the cellulosic fibrous material comprises surfaced enhanced pulp fiber, which desirably enhances the processing characteristics of the material, as well enhancing the characteristics of the finished composite product. The method of making a fiber-reinforced cementitious composite comprising the steps of providing a cementitious composition, and providing cellulosic fibrous material. The present method further includes blending the cementitious composition and the cellulosic fibrous material to form the cementitious composite. The surface enhanced pulp fiber preferably comprises approximately 1-10%, by weight, of the cellulosic fibrous material, and the cellulosic fibrous material exhibits an enhanced Bauer-McNett long fiber fraction. The cellulosic fibrous material preferably exhibits at least a 10% increase in length-weighted average fiber length (LWAFL), in comparison to a cellulosic fibrous material which is devoid of surface enhanced pulp fiber. The cellulosic fibrous material requires relatively reduced refining energy, in comparison to a cellulosic fibrous material which is devoid of surface enhanced pulp fiber, to reach a predetermined freeness CSF (Canadian Standard Freeness) value.

10. 发明授权

US10704165B2 Surface enhanced pulp fibers, methods of making surface enhanced pulp fibers, products incorporating surface enhanced pulp fibers, and methods of making products incorporating surface enhanced pulp fibers 有权
公开(公告)号：US10704165B2
公开(公告)日：2020-07-07
申请号：US15225300
申请日：2016-08-01
申请人： Domtar Paper Company, LLC
发明人： Harshad Pande , Bruno Marcoccia
IPC分类号： D01B9/00 , D21B1/04 , D21D1/26 , D21D1/06 , D21C9/00 , D21D1/20 , D21H11/08 , D21H11/10 , D21H11/16 , D02J3/02 , D21H15/02 , D21H11/00
摘要： Various embodiments of the present invention relate to surface enhanced pulp fibers, various products incorporating surface enhanced pulp fibers, and methods and systems for producing surface enhanced pulp fibers. Various embodiments of surface enhanced pulp fibers have significantly increased surface areas compared to conventional refined fibers while advantageously minimizing reductions in length following refinement. The surface enhanced pulp fibers can be incorporated into a number of products that might benefit from such properties including, for example, paper products, paperboard products, fiber cement boards, fiber reinforced plastics, fluff pulps, hydrogels, cellulose acetate products, and carboxymethyl cellulose products. In some embodiments, a plurality of surface enhanced pulp fibers have a length weighted average fiber length of at least about 0.3 millimeters and an average hydrodynamic specific surface area of at least about 10 square meters per gram, wherein the number of surface enhanced pulp fibers is at least 12,000 fibers/milligram on an oven-dry basis.

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