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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. 发明申请

US20200060895A1 ABSORBENT LAMINATES, ABSORBENT CORES AND DISPOSABLE ARTICLES UTILIZING THE ABSORBENT LAMINATES, AND RELATED METHODS 审中-公开
公开(公告)号：US20200060895A1
公开(公告)日：2020-02-27
申请号：US16466245
申请日：2017-12-14
申请人： EAM CORPORATION , DOMTAR PAPER COMPANY, LLC
发明人： Paul M. DUCKER , Harry J. CHMIELEWSKI
IPC分类号： A61F13/534
摘要： Absorbent multi-layer laminates with SAP on both sides of a middle substrate that comprises wettable cellulosic fibers. Also absorbent cores including such absorbent laminates. Absorbent articles such as protective underwear, adult briefs, baby diapers and nursing pads including such absorbent cores, and patient-support pads such as underpads and sacral pads including such absorbent laminates and cores.

5. 发明申请

US20190292329A1 METHODS OF REDUCING ODOR IN EXTRUDED LIGNIN AND EXTRUDED LIGNIN WITH REDUCED ODOR 审中-公开
公开(公告)号：US20190292329A1
公开(公告)日：2019-09-26
申请号：US16360809
申请日：2019-03-21
申请人： Domtar Paper Company, LLC
发明人： Mark DEANDREA , Michel Jean
IPC分类号： C08H7/00 , B29B9/06
摘要： Methods of reducing odiferous compounds in lignin, and reduced-odor lignin produced by the present methods. A solvent, for example a polar solvent such as ethanol, may be mixed with lignin in an extruder to remove odiferous compounds such as mercaptans and phenolic compounds. The polar solvent can then be boiled or evaporated out of the mixture to extract the odiferous compounds from the lignin.

6. 发明申请

US20170226009A1 SURFACE ENHANCED PULP FIBERS IN FIBER CEMENT 审中-公开
公开(公告)号：US20170226009A1
公开(公告)日：2017-08-10
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
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.

7. 发明授权

US11608596B2 Paper products subjected to a surface treatment comprising enzyme-treated surface enhanced pulp fibers and methods of making the same 有权
公开(公告)号：US11608596B2
公开(公告)日：2023-03-21
申请号：US16831582
申请日：2020-03-26
申请人： DOMTAR PAPER COMPANY, LLC , THE UNIVERSITY OF BRITISH COLUMBIA
发明人： Harshad Pande , Alexander Timothy Beam , Mark Martinez , Jingqian Chen , Miaoran Li , Heather Trajano
IPC分类号： D21H11/20 , D21H21/16 , D21H19/54 , C12N9/24
摘要： Methods of making a paper product can comprise forming a substrate from a first furnish that comprises a plurality of pulp fibers, at least partially dewatering the substrate, treating a second furnish that comprises a plurality of surface enhanced pulp fibers (SEPF) at least by adding one or more enzymes to the second furnish, and sizing the dewatered substrate at least by depositing the treated second furnish onto at least one of opposing first and second surfaces of the dewatered substrate. The SEPF can have a length weighted average fiber length that is greater than or equal to 0.20 millimeters (mm) and an average hydrodynamic specific surface area that is greater than or equal to 10 square meters per gram (m2/g).

8. 发明申请

US20220356648A1 Market Pulps Comprising Surface Enhanced Pulp Fibers and Methods of Making the Same 有权
公开(公告)号：US20220356648A1
公开(公告)日：2022-11-10
申请号：US17754098
申请日：2020-09-23
申请人： Domtar Paper Company, LLC
发明人： Harshad Pande , Bruno Marcoccia , Gwen Johnston , David Lloyd , Bradley Langford
IPC分类号： D21H11/08 , D21D1/34 , D21H15/02 , D21C9/18 , D21C9/00
摘要： A method of making a market pulp can include separating a slurry comprising a plurality of pulp fibers into at least first and second pulp feeds. The first pulp feed can be refined at least by, for each of one or more mechanical refiners, introducing the first pulp feed between two refining elements of the refiner and rotating at least one of the refining elements, each of the refining elements comprising a plurality of bars and a plurality of grooves, where a width of each of the bars is less than or equal to 1.3 mm and a width of each of the grooves is less than or equal to 2.5 mm. The refiner(s) can consume at least 300 kWh per ton of fiber. The refined first pulp feed and second pulp feed, which is not refined, can be combined to produce a third pulp feed that can be dried.

9. 发明申请

US20220333314A1 Paper Products Incorporating Surface Enhanced Pulp Fibers and Having Decoupled Wet and Dry Strengths and Methods of Making the Same 有权
公开(公告)号：US20220333314A1
公开(公告)日：2022-10-20
申请号：US17754082
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： D21H27/40 , D21H27/02 , D21D1/34 , D21H11/02 , D21H21/20 , D21H17/55 , D21H17/26
摘要： A method of making a paper product can comprise making one or more sheets at least by, for each of the sheet(s), forming a web from one or more furnishes that comprise fibers dispersed in water. The fibers of the furnish(es) can comprise a plurality of first fibers that are hardwood fibers and a plurality of second fibers that include softwood fibers and surface enhanced pulp fibers (SEPF), the SEPF having a length weighted average fiber length of at least 0.20 mm. The method can comprise at least partially dewatering the web to form the sheet. The sheet(s) can be laminated and/or embossed such that a total dry tensile strength of the paper product is less than or equal to 90% of the sum of the total dry tensile strength(s) of the sheet(s).

10. 发明授权

US11473245B2 Surface enhanced pulp fibers at a substrate surface 有权
公开(公告)号：US11473245B2
公开(公告)日：2022-10-18
申请号：US16322522
申请日：2017-08-01
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 , D21H15/02 , D21H17/28 , 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.

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