公开(公告)号：US20250059709A1

公开(公告)日：2025-02-20

申请号：US18820554

申请日：2024-08-30

Applicant: GranBio Intellectual Property Holdings, LLC

Inventor： Theodora RETSINA ,  Kimberly NELSON ,  Lee HILL ,  Vesa PYLKKANEN ,  Timothy J. GALLIFORD

IPC: D21H11/16 ,  D21C1/02 ,  D21C3/04 ,  D21C3/20 ,  D21C9/00 ,  D21H11/02 ,  D21H11/08 ,  D21H11/18 ,  D21H27/40

Abstract: The present invention provides a pulp product (e.g., paper) comprising cellulose and nanocellulose, wherein the nanocellulose is derived from the cellulose in a mechanical and/or chemical step that is separate from the main pulping process. The pulping process may be thermomechanical pulping or hydrothermal-mechanical pulping, for example. The pulp product is stronger and smoother with the presence of the nanocellulose. The nanocellulose further can function as a retention aid, for a step of forming the pulp product (e.g., in a paper machine). Other embodiments provide a corrugated medium pulp composition comprising cellulose pulp and nanocellulose, wherein the nanocellulose includes cellulose nanofibrils and/or cellulose nanocrystals and the nanocellulose may be hydrophobic. The nanocellulose improves the strength properties of the corrugated medium. In some embodiments, the cellulose pulp is a GreenBox+® pulp and the nanocellulose is derived from the AVAP® process.

公开(公告)号：US20240376673A1

公开(公告)日：2024-11-14

申请号：US18292424

申请日：2022-08-11

Applicant: BILLERUD AKTIEBOLAG (PUBL)

Inventor： Fredrik Nordstrom ,  Johan Magnusson

IPC: D21J1/00 ,  D21H11/04 ,  D21H11/08

Abstract: There is provided a multi-layered paperboard comprising a first outer layer, a second outer layer and at least one middle layer arranged between the first and the second outer layer, wherein the grammage of the first outer layer is at least 2.0 times higher than the grammage of the second outer layer. A method of producing the multi-layered paperboard is also provided.

公开(公告)号：US12018434B2

公开(公告)日：2024-06-25

申请号：US17232181

申请日：2021-04-16

Applicant: Metsä Board Oyj

Inventor： Ari Pekka Rytkönen ,  Esko Pekuri

IPC: D21H11/10 ,  D21C9/12 ,  D21H11/02 ,  D21H11/08

CPC classification number: D21H11/10 ,  D21C9/12 ,  D21H11/02 ,  D21H11/08

Abstract: According to an example aspect of the present invention, there is provided a multilayered fibrous sheet, such as paperboard, having a first layer comprising a first fibrous material, a second layer, spaced apart from the first layer, comprising a second fibrous material, and a third layer between the first and the second layers, comprising a third fibrous material, wherein at least one of the first and the second fibrous materials comprises or consists of a mixture of chemical pulp and mechanical pulp; and the third fibrous material comprises or consists of mechanical pulp.

公开(公告)号：US11885069B2

公开(公告)日：2024-01-30

申请号：US18062821

申请日：2022-12-07

Applicant: IFG Technologies, LLC

Inventor： Timothy Wagler ,  Chester Gunn

IPC: D21B1/36 ,  D21B1/02 ,  D21C9/18 ,  D21H11/08 ,  D21B1/06 ,  D21C1/04 ,  D21C3/04 ,  D21C3/22 ,  C05F5/00

CPC classification number: D21B1/36 ,  D21B1/02 ,  D21B1/021 ,  D21B1/026 ,  D21B1/06 ,  D21C1/04 ,  D21C3/04 ,  D21C3/22 ,  D21C9/18 ,  D21H11/08 ,  C05F5/002

Abstract: Disclosed herein is a process, comprising combining one or more additives with a feedstock to obtain a first mixture, the feedstock comprising a fibrous material and water, the fibrous material comprising lignin, cellulose, and hemicellulose; and conditioning the first mixture to obtain a liquid product and a dry pulp product. Also disclosed herein are condition processes and machines for use with the same. Also disclosed herein are liquid products, dry pulp products, and fibrous pellets made by the disclosed processes, and methods of using the same.

公开(公告)号：US20220178082A1

公开(公告)日：2022-06-09

申请号：US17429987

申请日：2020-02-12

Applicant: Stora Enso OYJ

Inventor： Sohrab Kazemahvazi ,  Ulla Jansson ,  Irene Wedin ,  Frank Peng

IPC: D21J3/00 ,  D21H11/08 ,  D21H11/12 ,  D21H11/20 ,  D21J1/16 ,  B65D65/38

Abstract: The invention discloses a method for producing a three dimensional molded product from cellulose fibers, comprising the steps of: providing a cellulose fiber composition comprising 1-30 wt % lignin, said cellulose fiber composition further having a solid content between 0.1-95%; providing a forming tool having a three dimensional shape including a forming surface, and bringing said forming surface into contact with the cellulose fiber composition; and press drying the cellulose fiber composition contacted by the forming tool at temperatures>200° C. to a dry content of at least 70%. The invention also relates to a three dimensional fiber based product obtainable by means of said method.

公开(公告)号：US20210381166A1

公开(公告)日：2021-12-09

申请号：US17342160

申请日：2021-06-08

Applicant: EVRNU, SPC

Inventor： Stacy Flynn ,  Christopher Stanev

IPC: D21H11/14 ,  D21H11/02 ,  D21H11/08 ,  D21H27/10

Abstract: The present disclosure relates to methods and systems for producing paper or packaging products. A combination pulp is formed by combining textile pulp and wood pulp and processed to produce the paper or packaging products. The textile pulp and wood pulp can be combined in a given ratio based on their respective characteristics or parameters to obtain a combination pulp with a desired characteristic or parameter.

公开(公告)号：US20210348335A1

公开(公告)日：2021-11-11

申请号：US17382725

申请日：2021-07-22

Applicant: The Procter & Gamble Company

Inventor： Khosrow Parviz Mohammadi ,  Scott Christopher Kreider

IPC: D21H11/12 ,  D21B1/06 ,  D21B1/34 ,  D21H27/30 ,  B32B29/00 ,  D21H27/00 ,  A47K10/16 ,  D21H11/08 ,  D21H11/20

Abstract: Improved processes for liberating trichome fibers from non-seed portions of a trichome-bearing host plant are provided, as well as inventive fibrous structures comprising trichome fibers.

公开(公告)号：US20210262169A1

公开(公告)日：2021-08-26

申请号：US17252295

申请日：2019-07-10

Applicant: Kemira Oyj

Inventor： Matti HIETANIEMI ,  Asko KARPPI ,  Jukka RAUTIAINEN

IPC: D21H11/08 ,  D21H11/14 ,  D21H17/29 ,  D21H17/37 ,  D21H17/55 ,  D21H27/00 ,  D21H27/10 ,  D21H27/30

Abstract: A method for manufacturing a multi-layered fibrous web is disclosed, which includes at least two fibrous layers, where each layer is formed from one or more fibre stocks. The fibrous layers are combined prior to subjecting the multilayered fibrous web to wet-pressing and drying. At least one layer of the multi-layered fibrous web is formed from a fibre stock including at least 50 weight-% of a chemi-thermomechanical pulp (CTMP), a hardwood kraft pulp and/or a recycled fibre material calculated from a thick stock applied to a particular layer approach system. A first strength component and a second strength component are added to the fibre stock. The first strength component includes a cationic strength agent and the second strength component includes a synthetic amphoteric polymer composition having a net charge from −3 to +1 meq/g (dry), at a pH of 7.

公开(公告)号：US11098451B2

公开(公告)日：2021-08-24

申请号：US16388986

申请日：2019-04-19

Applicant: The Procter & Gamble Company

Inventor： Khosrow Parviz Mohammadi ,  Scott Christopher Kreider

IPC: D21H11/12 ,  D21H27/30 ,  D21B1/06 ,  D21B1/34 ,  B32B29/00 ,  D21H27/00 ,  A47K10/16 ,  D21H11/08 ,  D21H11/20

Abstract: Improved processes for liberating trichome fibers from non-seed portions of a trichome-bearing host plant are provided. The processes include one or more steps for disassociating trichome fibers that are already separated from leaves, stems, and still-attached fibers so that the separated trichome fibers can be collected and not lost through a waste stream.

公开(公告)号：US20210140117A1

公开(公告)日：2021-05-13

申请号：US17025028

申请日：2020-09-18

Applicant: GPCP IP Holdings LLC

Inventor： Jeffrey A. Lee

IPC: D21H27/00 ,  D21F11/14 ,  D21F11/00 ,  D21H11/04 ,  D21H11/06 ,  D21H11/08 ,  D21H11/14

Abstract: Tissue papers and methods of making are disclosed herein. In one aspect, a tissue paper is substantially free of a chemical debonder and has a geometric mean tensile (GMT) in a range between about 500 and about 5,000 g/3 inches (g/3 in.) and a caliper in a range between about 50 and about 350 mils/8 sheets.