公开(公告)号：US20240150963A1

公开(公告)日：2024-05-09

申请号：US18412110

申请日：2024-01-12

Applicant: Voith Patent GmbH

Inventor： José Luiz Campos Souza ,  Dominik Marusa ,  Thomas Martin

IPC: D21F3/08 ,  B31F1/12 ,  D21F3/04 ,  D21F7/08

CPC classification number: D21F3/08 ,  B31F1/128 ,  D21F3/04 ,  D21F7/08

Abstract: A roll arrangement for producing a web of fibrous material which is compressed includes: a compression press, which includes at least one compression roll and a mating roll and is configured for compressing the web in a transverse direction which is transverse to a conveying direction of the web; and a tensioning belt, which is elastic and is configured for supporting the web and for being guided through a first nip between the at least one compression roll and the mating roll and over the at least one compression roll.

公开(公告)号：US11913171B2

公开(公告)日：2024-02-27

申请号：US17582449

申请日：2022-01-24

Applicant: SchäferRolls GmbH & Co. KG

Inventor： Carsten Sohl ,  Michail Nedanov

IPC: D21G1/02 ,  D21F3/08

CPC classification number: D21G1/0233 ,  D21F3/08

Abstract: A technical roll, in particular for paper manufacturing, having an elongated roll core and at least one first covering which is provided on the roll core, wherein an empty duct or conduit is provided, which is suitable for receiving a polymer fibre and extends over the length of the roll such that the polymer fibre can be introduced at one end of the empty duct. The application also relates to a technical roll having a polymer fibre, to a method for introducing the polymer fibre into an empty duct, and to the use of a polymer-based optical waveguide as a sensor in a technical roll.

公开(公告)号：US11718958B2

公开(公告)日：2023-08-08

申请号：US17178328

申请日：2021-02-18

Applicant: Ichikawa Co., Ltd.

Inventor： Yuya Takamori ,  Manami Morinaga

IPC: D21F3/02 ,  C08G18/10 ,  C08G18/44 ,  C08G18/48 ,  C08G64/30 ,  C08K5/00 ,  C08K5/053 ,  D21F3/08

CPC classification number: D21F3/0236 ,  C08G18/10 ,  C08G18/44 ,  C08G18/4854 ,  C08G64/305 ,  C08K5/0025 ,  C08K5/053 ,  D21F3/086

Abstract: The object of the invention is to provide a shoe press belt which has an excellent strength while the variation in strength among its parts being suppressed, and to provide a method for producing such a shoe press belt.
Provided is a shoe press belt for use in a papermaking machine comprising at least one resin layer, wherein the resin layer comprises a polyurethane resin formed by curing an urethane prepolymer having an isocyanate group with a curing agent having an active hydrogen group, wherein the curing agent comprises one or more polycarbonate diol(s) expressed by the following formulae (1) and (2).

HO-Am-Bn—R1OH  (1)

公开(公告)号：US20230117841A1

公开(公告)日：2023-04-20

申请号：US18082958

申请日：2022-12-16

Applicant: Voith Patent GmbH

Inventor： Dominik Marusa ,  José Luiz Campos Souza ,  Thomas Martin

IPC: D21F3/08 ,  D21F3/04

Abstract: The invention relates to a roller for producing a fibrous web, in particular a paper web including a rotationally symmetrical base body which is rotatable about a longitudinal axis and has a shell surface on which there are arranged at least two elastically deformable and/or deflectable ring-shaped lamellas which extend away from the shell surface in the radial direction and which surround the base body in the circumferential direction, wherein the lamellas are arranged at least in sections at an angle relative to a center plane of the roller aligned perpendicular to the longitudinal axis of the roller, thus forming an angle of inclination.

公开(公告)号：US20220372701A1

公开(公告)日：2022-11-24

申请号：US17764275

申请日：2020-07-20

Applicant: Voith Patent GmbH

Inventor： Delphine Delmas

IPC: D21F3/02 ,  D21F3/08

Abstract: A press cover is formed with at least one polymer layer. The at least one polymer layer includes or is formed of at least one thermoplastic elastomer in the form of a copolymer. There is also disclosed the use of a press cover of this type in a shoe press, a shoe press of this type, and a press roll, in each case having a press cover of this type. Finally, there is also disclosed the use of a thermoplastic elastomer in the form of a copolymer, for at least one polymer layer of a press cover for a shoe press for the treatment of a fibrous web.

公开(公告)号：US11286618B2

公开(公告)日：2022-03-29

申请号：US17055738

申请日：2019-05-15

Applicant: Albany International Corp.

Inventor： Karl-Johan Tolfsson ,  Joergen Israelsson ,  Viktor Bergstroem ,  Kimberly Downing ,  Johan Ragard

IPC: D21F11/00 ,  D21F3/02 ,  D21F3/08 ,  D21F5/02 ,  D21F7/06 ,  D21F7/08 ,  D21F11/14 ,  D21H27/00

Abstract: The invention relates to a method of making tissue paper in a machine for making tissue paper and in which method a fibrous web is passed through at least one press nip together with a texturing belt. The texturing belt has a side that faces the fibrous web in the press nip and the surface of that side is a web contacting surface that is textured. The texturing belt can be selected such that the tissue paper that is manufactured obtains desired values for one or several parameters. The invention also relates to a machine for making tissue paper. The machine comprises a forming section, a drying cylinder, a press having a first press unit and a second press unit between which press units a nip is formed. The second press unit is preferably a shoe roll. The machine also comprises a drying cylinder which is arranged to be heated from the inside by hot steam and on which a fibrous web can be dried by heat. A texturing belt is arranged to run in a loop through the nip and to the drying cylinder such that a fibrous web can be carried by the texturing belt to the drying cylinder and transferred to the drying cylinder. The side of the texturing belt that contacts the fibrous web comprises a layer of a polymer material such that the polymer material will contact the fibrous web and cavities are formed in that surface of the texturing belt that comes into contact with the fibrous web.

公开(公告)号：US20210269577A1

公开(公告)日：2021-09-02

申请号：US17178316

申请日：2021-02-18

Applicant: Ichikawa Co., Ltd.

Inventor： Yuya TAKAMORI ,  Manami MORINAGA

IPC: C08G18/44 ,  C08G18/75 ,  D21F3/08

Abstract: The object of the invention is to provide a shoe press belt which has an excellent strength while the variation in strength among its parts being suppressed, and to provide a method for producing such a shoe press belt.
Provided is a shoe press belt for use in a papermaking machine comprising at least one resin layer, wherein the resin layer comprises a polyurethane resin formed by curing a polyurethane prepolymer with a curing agent, wherein the polyurethane prepolymer is obtained by reacting a polyol comprising one or more polycarbonate diol(s) expressed by the following formulae (1) and (2) with aliphatic polyisocyanate.

公开(公告)号：US10900173B2

公开(公告)日：2021-01-26

申请号：US16201874

申请日：2018-11-27

Applicant: Valmet Technologies, Inc.

Inventor： Jani Turunen

IPC: B32B1/00 ,  D21F9/04 ,  B32B27/20 ,  B32B27/40 ,  B32B27/38 ,  D21F3/10 ,  D21F3/08 ,  C08K3/22 ,  C08K7/24 ,  D21G1/02 ,  D21H23/58 ,  D21F1/40

Abstract: The present invention relates to a roll for use in a manufacture of a fibrous web comprising cellulosic fibers. The roll comprises a roll body with a cylindrical surface, and a roll cover, which is arranged to cover the cylindrical surface of the roll body. The cover comprises a functional layer, which comprises a polymer matrix and filler particles embedded in the polymer matrix. The filler particles comprise hollow spherical particles of aluminium oxide, titanium oxide, zirconium oxide and/or silicon carbide, which hollow particles have a particle size of ≥200 μm.

公开(公告)号：US10655276B2

公开(公告)日：2020-05-19

申请号：US15500176

申请日：2015-07-17

Applicant: VOITH PATENT GMBH

Inventor： Wesley Brooks ,  Robert Eberhardt ,  Siegfried Graser ,  Franz Grohmann ,  Ting Liu ,  Ralf Moser ,  Stefan Probst-Schendzielorz ,  Matthias Schmitt ,  Michael Wokurek

IPC: D21G1/02 ,  D21F3/08 ,  B05D1/18 ,  B22F3/105

Abstract: A method produces or machines a roller which is suitable to be used in a machine for producing or processing a fibrous web. The roller contains a roller core and at least one functional layer. The method is characterized in that the method includes the application of a functional layer. The application of the functional layer is performed by applying a coating substrate to the surface of a roller core. The application takes place simultaneously over at least half the roller width, preferably over 75% of the roller width, particularly preferably over the entire roller width. The entire applied coating substrate or parts thereof are hardened, forming a solidified structure.

公开(公告)号：US20200087857A1

公开(公告)日：2020-03-19

申请号：US16572819

申请日：2019-09-17

Applicant: Voith Patent GmbH

Inventor： Caio Penteado ,  Jonas Bergström

IPC: D21F9/02 ,  D21F3/04 ,  D21F3/08 ,  D21F3/02 ,  D21F11/14 ,  D21F11/00 ,  D21F3/10 ,  D21F7/00 ,  D21H27/00

Abstract: A machine for the production of a fibrous web, with a forming region, including a forming roll and a permeable inner belt which at least partially wraps around the forming roll together with an outer belt for formation of the fibrous web. A press device is immediately downstream from the forming region for additional dewatering of the fibrous web in a press nip and with a downstream drying cylinder. The fibrous web is carried supported on the inner belt from the forming region until the transfer to the heated surface of drying cylinder takes place. The inner belt is textured in order to provide texture to fibrous web and the transfer roll is a shoe roll in order to provide an extended transfer nip.