公开(公告)号：US12215463B2

公开(公告)日：2025-02-04

申请号：US17414387

申请日：2019-05-22

Applicant: KEMIRA OYJ

Inventor： Diego Salas ,  Jinho Lee ,  Jan-Luiken Hemmes

IPC: D21H11/18 ,  D21F1/00 ,  D21H17/26 ,  D21H17/29 ,  D21H17/55 ,  D21H17/56 ,  D21H21/20 ,  D21H23/04 ,  D21J1/00

Abstract: The present invention provides a process for producing paper or board, comprising slushing a stock of dried fibres in a slushing system comprising a pulper, and/or feeding a stock of never-dried fibres in a fiber line of an integrated paper mill; deflaking and/or refining the stock in a deflaker and/or a refiner, optionally diluting the deflaked and/or refined stock, directing the deflaked and/or refined stock to a headbox, forming a web, and drying the web, wherein a polymeric paper making additive is added to one or more of the stocks of dried fibres and never-dried fibres before deflaking and/or refining of the stock. The present invention further provides paper and board with improved properties.

公开(公告)号：US20240426053A1

公开(公告)日：2024-12-26

申请号：US18749773

申请日：2024-06-21

Applicant: SEIKO EPSON CORPORATION

Inventor： Goshiro ISOZAKI ,  Toshizo NISHI

IPC: D21F1/00 ,  D21F1/34 ,  D21F7/00 ,  D21F7/06

Abstract: An apparatus includes: a defibrating unit that defibrates a material to turn it into fibers; a fiber piling-up unit that piles up the fibers to form a second web; a pressing portion that presses the second web to turn it into a sheet; and a humidifying mechanism that supplies humidified air to the fiber piling-up unit. The fiber piling-up unit includes a rotating portion that stirs the fibers supplied from the defibrating unit, a case in which the rotating portion is housed, and a mesh belt that is provided under the case and transports the second web in a transportation direction. The second web is formed on the mesh belt by piling up the fibers on the mesh belt. The humidifying mechanism includes a downstream-side nozzle that is provided downstream of the fiber piling-up unit in the transportation direction and supplies the humidified air to the fiber piling-up unit.

公开(公告)号：US20240410112A1

公开(公告)日：2024-12-12

申请号：US18738099

申请日：2024-06-10

Applicant: SEIKO EPSON CORPORATION

Inventor： Tetsuya TAMURA

IPC: D21F1/32 ,  D21F1/00

Abstract: A sheet manufacturing apparatus includes a processing roller configured to process a web containing fibers, a cleaning unit including a cleaning roller unit, a blade unit, and a hammer unit, and a control unit. The cleaning roller unit is configured to clean the processing roller, the blade unit is configured to clean the cleaning roller unit, and the control unit is configured to cause the hammer unit to apply an impact to the blade unit.

公开(公告)号：US20240368836A1

公开(公告)日：2024-11-07

申请号：US18767211

申请日：2024-07-09

Applicant: STRUCTURED I, LLC

Inventor： James E. Sealey, II ,  Byrd Tyler Miller, IV ,  Marc Paul Begin ,  Theodore D. Kennedy

IPC: D21F1/00 ,  B33Y10/00 ,  B33Y80/00 ,  D21F3/02

Abstract: A method of forming a fibrous web on a papermaking machine including the steps of depositing a dilute fiber slurry out of a headbox to a forming area comprising a forming surface made up of a structured fabric, wherein the structured fabric is supported by a breast roll and a forming roll, and the forming area is devoid of any additional fabrics or belts other than the structured fabric, draining the dilute fiber slurry through the structured fabric, and drying the fiber slurry.

公开(公告)号：US12006630B2

公开(公告)日：2024-06-11

申请号：US17988266

申请日：2022-11-16

Applicant: STRUCTURED I, LLC

Inventor： James E. Sealey ,  Byrd Tyler Miller, IV ,  Phillip MacDonald ,  Taras Z. Andrukh ,  Justin S. Pence

IPC: D21F7/08 ,  B32B3/26 ,  B32B5/02 ,  B32B5/10 ,  B32B5/12 ,  B32B5/26 ,  B32B7/05 ,  B32B7/12 ,  B32B27/12 ,  B32B27/40 ,  D21F1/00 ,  D21F11/00 ,  D21H27/00

CPC classification number: D21F7/083 ,  B32B3/266 ,  B32B5/024 ,  B32B5/028 ,  B32B5/10 ,  B32B5/12 ,  B32B5/26 ,  B32B7/05 ,  B32B7/12 ,  B32B27/12 ,  B32B27/40 ,  D21F1/0036 ,  D21F11/006 ,  D21H27/005 ,  B32B2250/02 ,  B32B2250/03 ,  B32B2250/20 ,  B32B2250/24 ,  B32B2262/02 ,  B32B2262/0284 ,  B32B2262/0292 ,  B32B2307/514 ,  B32B2307/724 ,  B32B2307/726 ,  B32B2307/732 ,  B32B2413/00 ,  B32B2432/00

Abstract: A fabric or belt for a papermaking machine including a first layer that defines a web contacting surface and a second layer that supports the first layer. The first layer is made of extruded polymer and includes a plurality of first elements aligned in a first direction, a plurality of second elements aligned in a second direction and extending over the plurality of first elements, and a plurality of open portions defined by the plurality of first and second elements. The second layer is made of woven fabric. The first layer is bonded to the second layer so that the first layer extends only partially through the second layer and an interface formed between the first and second layers includes bonded and unbonded portions and airflow channels that extend in a plane parallel to the first and second layers.

公开(公告)号：US12006628B2

公开(公告)日：2024-06-11

申请号：US18084720

申请日：2022-12-20

Applicant: Valmet Technologies Oy

Inventor： Juha-Pekka Huhtanen ,  Tuomo Aho

IPC: D21F1/00 ,  D21F1/80 ,  D21F3/04 ,  D21F3/08 ,  D21F9/00 ,  D21G9/00 ,  D21H11/18

CPC classification number: D21F1/0009 ,  D21F1/80 ,  D21F3/04 ,  D21F3/08 ,  D21F9/003 ,  D21G9/0027 ,  D21H11/18

Abstract: The invention relates to a system of producing MFC (micro fibrillated cellulose) having a process device (30) of a pulper, a refiner or a screen configured to process MFC suspension to consistency of 0.5-5%. The system has a continuous pressing means (15; 25, 26) configured to dry the MFC suspension to a consistency of 6-60%. A method of producing MFC has at least one process stage (30) which processes a MFC suspension to a consistency of 0.5-5% by a process device (30). In the process stage the MFC suspension is pulped in a pulping stage in a pulper and/or refined in a refining stage by a refiner and/or screened in a screening stage by a screen. The MFC suspension having the consistency of 0.5-5% is dried in a drying stage of continuous pressing (15, 25, 26) by continuous a pressing device (15, 25, 26) to a consistency of 6-60%.

公开(公告)号：US20240018717A1

公开(公告)日：2024-01-18

申请号：US18217562

申请日：2023-07-01

Applicant: Volth Patent GmbH

Inventor： Johann Boeck

IPC: D21F1/00 ,  D03D3/04

CPC classification number: D21F1/0036 ,  D03D3/04

Abstract: A forming fabric tape for a machine for producing and/or processing a fiber material web, the forming fabric tape including an upper fabric layer including upper longitudinal threads and upper transversal threads woven into the upper longitudinal threads; and a lower fabric layer including lower longitudinal threads and lower transversal threads woven into the lower longitudinal threads, wherein the upper fabric layer and the lower fabric layer are arranged on top of one another so that the upper fabric layer is oriented towards the fiber material web being produced when the fabric tape is being used in the machine and the lower fabric layer is oriented away from the fiber material web being produced, wherein a first distance A1 between two directly adjacent lower longitudinal threads is greater and a second distance A2 between two directly adjacent lower longitudinal threads.

公开(公告)号：US20230364854A1

公开(公告)日：2023-11-16

申请号：US18227390

申请日：2023-07-28

Applicant: STRUCTURED I, LLC

Inventor： James E. Sealey, II ,  Byrd Tyler Miller, IV ,  Justin C. Pence ,  Taras Z. Andrukh ,  Shane Ervin Hayes

IPC: B29C64/112 ,  D21F1/00 ,  D21F11/00 ,  B29C64/118 ,  B33Y80/00 ,  B29C64/106

CPC classification number: B29C64/112 ,  D21F1/0027 ,  D21F1/0063 ,  D21F11/006 ,  B29C64/118 ,  B33Y80/00 ,  B29C64/106 ,  B33Y10/00

Abstract: A papermaking belt including zones of material laid down successively using a 3D printing process. The zones include at least a pocket zone configured to form three dimensional structures in a paper web by applying vacuum to pull the paper web against the pocket zone. In at least one exemplary embodiment, the zone also include at least one vacuum breaking zone configured to limit an amount of paper fibers pulled through the pocket zone by the applied vacuum.

公开(公告)号：US20230166446A1

公开(公告)日：2023-06-01

申请号：US18160349

申请日：2023-01-27

Applicant: The Procter & Gamble Company

Inventor： John L. BRENT, JR. ,  Steven D. SMITH ,  Jacob R. ADAMS

IPC: B29C64/124 ,  B33Y10/00 ,  B33Y80/00 ,  B29C64/321 ,  B29C64/277 ,  B29C64/129 ,  B33Y70/10 ,  D21F1/00

CPC classification number: B29C64/124 ,  B29C64/129 ,  B29C64/277 ,  B29C64/321 ,  B33Y10/00 ,  B33Y70/10 ,  B33Y80/00 ,  D21F1/009 ,  B33Y30/00

Abstract: A method for manufacturing a deflection member is disclosed. The method may include the step of incorporating a monomer, a photoinitiator system, a photoinhibitor, and/or a reinforcing member. A further step includes blending the monomer, photoinitiator, and/or photoinhibitor to form a blended photopolymer resin. Further steps may be exposing the photopolymer resin to radiation form a first radiation source and/or a second radiation source.

公开(公告)号：US11655591B2

公开(公告)日：2023-05-23

申请号：US17119189

申请日：2020-12-11

Applicant: Voith Patent GmbH

Inventor： Uwe Koeckritz ,  Christian Iniotakis ,  Reinhard Holl ,  Jens Kallenberg ,  Michael Straub ,  Cedric Fitzer

IPC: D21F1/00 ,  D21F7/08 ,  D06C29/00

CPC classification number: D21F7/08 ,  D06C29/00 ,  D21F1/0063

Abstract: A substrate of a paper machine clothing has a usable region formed with through-channels that are non-cylindrical with a cross-sectional area becoming smaller from an upper side to a middle region of the substrate. An upper rim of at least one of the through-channels directly contacts an upper rim of at least one neighboring through-channel and the upper rims have common local maximum. A sectional plane parallel to the thickness direction of the substrate defines an intersecting line with a sidewall of a neighboring through-channel. The intersecting line has a convexly shaped first portion, a concavely shaped second portion, and a third portion that is again convexly shaped going from the at least one common local maximum toward the middle region of the substrate. There is also described a method of producing such a paper machine clothing.