EP1754823B1 - Bande de transfert - Google Patents

Bande de transfert Download PDF

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Publication number
EP1754823B1
EP1754823B1 EP20060117369 EP06117369A EP1754823B1 EP 1754823 B1 EP1754823 B1 EP 1754823B1 EP 20060117369 EP20060117369 EP 20060117369 EP 06117369 A EP06117369 A EP 06117369A EP 1754823 B1 EP1754823 B1 EP 1754823B1
Authority
EP
European Patent Office
Prior art keywords
transfer belt
belt according
lower side
storage volume
web
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20060117369
Other languages
German (de)
English (en)
Other versions
EP1754823A3 (fr
EP1754823A2 (fr
Inventor
Arved Westerkamp
Daniel Gronych
Robert Koplin
Klaus Hermann
Georg Dr. Kleiser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Priority to EP11159704.3A priority Critical patent/EP2360314B1/fr
Publication of EP1754823A2 publication Critical patent/EP1754823A2/fr
Publication of EP1754823A3 publication Critical patent/EP1754823A3/fr
Application granted granted Critical
Publication of EP1754823B1 publication Critical patent/EP1754823B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/08—Pressure rolls
    • D21F3/086—Pressure rolls having a grooved surface
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/0209—Wet presses with extended press nip
    • D21F3/0218—Shoe presses
    • D21F3/0227—Belts or sleeves therefor
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/04—Arrangements thereof
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/08—Felts
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/08—Felts
    • D21F7/086—Substantially impermeable for transferring fibrous webs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S162/00—Paper making and fiber liberation
    • Y10S162/901—Impermeable belts for extended nip press
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]

Definitions

  • the invention relates to a transfer belt for a machine for producing a material web, in particular a paper, board or tissue web (see EP-A-0 548 038 ).
  • Paper, board or tissue machines may have central roll presses.
  • central roll presses with a roller and a plurality of this roller associated counter-rollers, each forming a press nip with the roller, the wet fibrous web is drawn by an open draw from the smooth roller (central roller). This considerable withdrawal forces are exerted on the fibrous web.
  • a transfer belt wrapping the center roll is proposed in the prior art, with which the fibrous web is guided by the press nips and from which the fibrous web can be removed by means of, for example, a take-off suction roll.
  • a closed press section is known in a paper machine in which the rollers form roll nips between each other, between which nips the web has a closed train supported by the surface of a fabric, and with a central roll against which at least two nips are formed, through which a transfer belt is directed.
  • the transfer belt forms a closed loop around the central roll, on the outer surface of which the web is closed after the last nip and continuously transferred under tension to a dryer wire or equivalent fabric in a post-press section, wherein the transfer belt fabric does not rewet the web ,
  • the web adhesion properties of the outer surface of the transfer belt webbing are selected such that the web follows the transfer web web after the last nip.
  • the center roll is a roll having a dimpled surface, and the transfer belt fabric is permeable to a certain degree.
  • the known transfer belt has an upper side and a lower side arranged opposite the upper side, wherein, when the intended use of the endless belt, the upper side can be brought into contact with the material web, in particular with the paper, board or tissue web, and the lower side with the machine.
  • the endless belt has a storage volume for receiving fluid, which acts on the underside.
  • the underside is formed according to the invention by an impermeable polymeric layer, wherein the storage volume is at least partially provided by the surface structure of the bottom.
  • the fluid acting on the underside of the transfer belt is at least partially taken up in the transfer belt.
  • the fluid can be led away from the contact region between the lateral surface of a roller and the underside of the transfer belt. Therefore, the fluid acting on the underside of the transfer belt, for example, water and / or air, not or only partially build up as a fluid layer between the lateral surface of the roller and the underside of the transfer belt.
  • the risk of aquaplaning between the transfer belt and the roll shell is prevented or at least considerably reduced.
  • the storage volume is at least partially provided by an at least partially porous structure of the transfer belt.
  • the porous structure may, for example, comprise a nonwoven and / or a woven fabric and / or a foamed structure which extends at least in the area of the underside of the transfer tape.
  • a preferred embodiment of the invention provides that the surface structure is designed such that fluid can be led away from the press nip when passing through a press nip.
  • the surface structure may in this case form a regular or an irregular pattern.
  • the surface structure is formed such that the storage volume is maintained under pressure in a press nip substantially.
  • the transfer belt has a storage volume which changes transversely to the direction of travel.
  • drag effects in the edge region of the transfer belt can be compensated.
  • the surface structure forms a regular pattern in sections and an irregular pattern on the underside in sections.
  • the surface structure comprises a groove.
  • the effect of the scoring is particularly effective if it extends at least in sections along the direction of the transfer belt. The best results are obtained when the grooving extends substantially along the direction of travel of the transfer belt.
  • the grooves in this case preferably have a width between 0.2 and 10 mm, preferably between 1 and 5 mm, wherein the depth of the grooves is advantageously less than 50% of the total thickness of the transfer belt.
  • An irregular surface structure can be provided, for example, by the spacing and / or the cross-sectional area and / or the shape of at least two adjacent grooves being different.
  • the surface structure comprises a roughness Ra of the bottom of 3 to 40 .mu.m.
  • the surface structure can be formed solely by the roughness or the roughness is part of the surface structure.
  • the roughness described above can be achieved, for example, by sanding the underside or by using a correspondingly granular material for the production of the underside.
  • the underside is formed by a permeable or impermeable polymeric layer, wherein the surface structure is produced in the preparation of the polymeric layer and / or after the preparation of the polymeric layer.
  • the surface structure may be formed by casting or molding in the preparation of the polymeric layer.
  • the surface structure after the preparation of the polymeric layer can be produced by mechanical and / or thermal and / or chemical processing of the polymeric layer.
  • FIG. 1 shows a machine 1 according to the invention with a central roller press 2.
  • the central roller press 2 comprises a roller 3, also called central roller 3.
  • the central roller 3 has a smooth lateral surface 4.
  • the central roller 3 are associated with two counter-rollers 5 and 6, which each form a press nip 7 and 8 with the central roller 3.
  • the central roller 3 is further wrapped by a transfer belt 9 in sections such that the transfer belt 9 is guided by the two press nips 7 and 8.
  • the transfer belt 9 has an upper side 11, which can be brought into contact with a fibrous web 10, and a lower side 12, which contacts the lateral surface 4 of the roller 3 in the entire wrapping area.
  • the fibrous web 10 and the transfer belt 9 are guided together through the two press nips 7 and 8, wherein the transfer belt 9 is in contact with the roller 3.
  • a storage structure is provided by a surface structure of the underside 12, which is suitable to at least partially accommodate water and / or air, which penetrates into the wrap between the bottom 12 and lateral surface 4.
  • the underside 12 of the transfer belt 9 is formed by a polymeric layer, such as polyurethane, wherein the surface structure is formed by a groove with grooves 15, which form recesses in the bottom 12, and interposed webs 16, the in the production of the bottom 12, for example by casting, are generated (see FIG. 2 ).
  • a polymeric layer such as polyurethane
  • the grooves 15 extend in this case substantially along the direction of travel (MD direction) of the endless belt 9, whereby fluid can be taken during the passage through a press nip from the press nip and led away.
  • the underside 12 is in this case designed such that the storage volume is maintained under pressure in a press nip substantially.
  • the ratio of land width to groove width is two, with the grooves having a width of 3mm. Due to the surface structure of the bottom 12, a storage volume of 400 milliliters per m 2 area of the bottom 12 is provided.
  • the underside 12 of the endless belt 9 is outside the wrap area a scraper 13 for stripping fluid and a spray tube 14 for cleaning the bottom 12 assigned.
  • the scraper 13 is a soft scraper plastic scraper without fiber reinforcement.
  • the angle of attack of the scraper 13 is approximately 10 ° relative to the bottom 12.
  • the lateral surface 4 of the roller 3 outside of the belt area scraper 17 and 18 for stripping fluid and spray tubes 19 and 20 for cleaning the lateral surface 4 are assigned.
  • the fibrous web 10 Before the fibrous web 10 passes through the central roll press 2, it passes between two press felts 23 and 24 between the counter roll 5 and another roll 21 formed press nip 22, wherein the press felt 23 is also guided by the formed between the central roll 3 and counter roll 5 Press nip 7 so that the pulp 10 contacts the press felt 23 on its one side and the transfer belt 9 on its other side when passing through the press nip 7.
  • the fiber material 10 also contacts on its one side a press felt 25 and on its other side the transfer belt 9.
  • the fibrous web 2 After passing through the fibrous web 10 through the Gottwalzenpresse2, the fibrous web 2 is removed from the transfer belt 9 by means of an evacuated pick-up roller 26 and transferred to a clothing 27.
  • the Fig. 3 shows various variants of grooves for endless belts according to the invention or roll shells in cross section.
  • the grooves 15 have a semicircular cross-section.
  • the grooves 15 have a trapezoidal cross-section.
  • grooves 15 have a triangular cross-section.
  • the Fig. 4 shows different variants of surface structures for endless belts according to the invention or roller shells in a plan view of the underside 12 or on the lateral surface 4.
  • the surface structure has irregularly formed recesses 15 forming recesses.
  • the surface structure has grooves 15 which extend diagonally to the running direction (MD direction) and form recesses.
  • the surface structure has diamond-shaped elevations 28.

Claims (16)

  1. Bande de transfert (9) pour une machine (1) de fabrication d'une nappe de matériau (10), en particulier d'une nappe de papier, carton, ou de papier tissu, comprenant un côté supérieur (11) et un côté inférieur (12) disposé à l'opposé de celui-ci, dans laquelle, lors de l'utilisation prévue de la bande de transfert (9), le côté supérieur (11) peut être amené en contact avec la nappe de matériau (10) et le côté inférieur (12) peut être amené en contact avec la surface d'enveloppe (4) d'un cylindre (3) et la bande de transfert (9) présente un volume de stockage pour recevoir du fluide agissant sur le côté inférieur (12), tel que de l'eau et/ou de l'air, et dans laquelle le volume de stockage est fourni au moins en partie par la structure de surface du côté inférieur (12), la bande de transfert (9) comprenant une couche polymère imperméable, caractérisée en ce que
    le côté inférieur (12) est formé par la couche polymère imperméable.
  2. Bande de transfert selon la revendication 1, caractérisée en ce que
    le côté inférieur (12) est réalisé de telle sorte que le volume de stockage, lors d'une sollicitation en pression dans un pinçage (7, 8), soit essentiellement conservé.
  3. Bande de transfert selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    le côté inférieur (12) est réalisé de telle sorte que lors du passage à travers un pinçage (7, 8), du fluide soit évacué hors du pinçage (7, 8).
  4. Bande de transfert selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    la bande de transfert (9) présente un volume de stockage variant transversalement à la direction d'avance.
  5. Bande de transfert selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    la structure de surface comprend un rainurage (15) .
  6. Bande de transfert selon la revendication 5, caractérisée en ce que
    le rainurage (15) s'étend essentiellement longitudinalement par rapport à la direction d'avance de la bande de transfert (9).
  7. Bande de transfert selon la revendication 5 ou 6, caractérisée en ce que
    le rapport de la largeur de nervure (16) à la largeur de rainure (15) est compris entre 0,5 et 10.
  8. Bande de transfert selon l'une quelconque des revendications 5 à 7,
    caractérisée en ce que
    les rainures (15) présentent une largeur comprise entre 0,2 et 10 mm, de préférence entre 1 et 5 mm.
  9. Bande de transfert selon l'une quelconque des revendications 5 à 8,
    caractérisée en ce que
    la profondeur des rainures (15) est inférieure à 50 % de l'épaisseur totale de la bande de transfert (9).
  10. Bande de transfert selon l'une quelconque des revendications 5 à 9,
    caractérisée en ce que
    la distance et/ou la surface en section transversale et/ou la forme d'au moins deux rainures adjacentes (15) est différente.
  11. Bande de transfert selon l'une quelconque des revendications 1 à 10,
    caractérisée en ce que
    la structure de surface présente une rugosité Ra du côté inférieur (12) de 3 à 40 µm.
  12. Bande de transfert selon l'une quelconque des revendications 1 à 11,
    caractérisée en ce que
    la structure de surface est produite par collage ou moulage lors de la fabrication de la couche polymère.
  13. Bande de transfert selon l'une quelconque des revendications 1 à 11,
    caractérisée en ce que
    la structure de surface est produite après la fabrication de la couche polymère par un usinage mécanique et/ou thermique et/ou chimique de celle-ci.
  14. Bande de transfert selon l'une quelconque des revendications 1 à 13,
    caractérisée en ce que
    le volume de stockage est fourni au moins en partie par une structure au moins partiellement poreuse de la bande de transfert (9).
  15. Bande de transfert selon la revendication 14, caractérisée en ce que
    la structure poreuse comprend une structure moussée.
  16. Bande de transfert selon l'une quelconque des revendications 1 à 15,
    caractérisée en ce que
    le volume de stockage est compris entre 5 et 1000 millilitres par m2 de la surface du côté inférieur (12), de préférence entre 50 et 500 millilitres par m2 de la surface du côté inférieur (12).
EP20060117369 2005-08-19 2006-07-18 Bande de transfert Active EP1754823B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11159704.3A EP2360314B1 (fr) 2005-08-19 2006-07-18 Bande de transfert

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200510039301 DE102005039301A1 (de) 2005-08-19 2005-08-19 Transferband

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP11159704.3A Division EP2360314B1 (fr) 2005-08-19 2006-07-18 Bande de transfert
EP11159704.3A Division-Into EP2360314B1 (fr) 2005-08-19 2006-07-18 Bande de transfert

Publications (3)

Publication Number Publication Date
EP1754823A2 EP1754823A2 (fr) 2007-02-21
EP1754823A3 EP1754823A3 (fr) 2008-08-27
EP1754823B1 true EP1754823B1 (fr) 2014-03-26

Family

ID=37460043

Family Applications (2)

Application Number Title Priority Date Filing Date
EP20060117369 Active EP1754823B1 (fr) 2005-08-19 2006-07-18 Bande de transfert
EP11159704.3A Active EP2360314B1 (fr) 2005-08-19 2006-07-18 Bande de transfert

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP11159704.3A Active EP2360314B1 (fr) 2005-08-19 2006-07-18 Bande de transfert

Country Status (3)

Country Link
US (1) US7722741B2 (fr)
EP (2) EP1754823B1 (fr)
DE (1) DE102005039301A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006024343A1 (de) * 2006-05-24 2007-11-29 Voith Patent Gmbh Transportband für eine Maschine zur Herstellung von Bahnmaterial und Verfahren zur Herstellung eines derartigen Transportbandes
JP5044301B2 (ja) * 2007-06-25 2012-10-10 イチカワ株式会社 製紙機械用シュープレスベルトおよびその製造方法
DE102008041245A1 (de) 2008-08-13 2010-02-18 Voith Patent Gmbh Transport-oder Prozessband
DE102011080728A1 (de) 2011-08-10 2013-02-14 Voith Patent Gmbh Pressband für Schuhpressvorrichtung
JP5090566B1 (ja) 2011-10-12 2012-12-05 イチカワ株式会社 湿紙搬送用ベルト
US8738207B2 (en) * 2012-04-30 2014-05-27 GM Global Technology Operations LLC Hybrid vehicle with electric transmission and electric drive module
AT16404U1 (de) * 2017-05-18 2019-08-15 Voith Patent Gmbh Vorrichtung zur Reinigung einer umlaufenden Bespannung einer Maschine zur Herstellung oder Behandlung einer Faserstoffbahn

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1155972B (de) * 1958-11-07 1963-10-17 Kuesters Eduard Nasspresse fuer Papier-, Pappen- u. dgl. Maschinen mit endlosem Mitlaeufer
CS198481B1 (en) * 1977-05-20 1980-06-30 Cestmir Balcar Multilayer felt,method of and apparatus for manufacturing same
FI75620C (fi) * 1982-04-01 1988-07-11 Tampella Oy Ab Laongzonspress foer en pappersmaskin.
US4842905A (en) * 1988-02-03 1989-06-27 Asten Group, Inc. Tessellated papermakers fabric and elements for producing the same
FI916026A (fi) * 1991-12-19 1993-06-20 Valmet Paper Machinery Inc Kompakt pressparti med slutet bandrag i en pappersmaskin
DE4202731C2 (de) * 1992-01-31 1997-04-17 Voith Gmbh J M Preßmantel für eine Schuhpresse
US5298124A (en) * 1992-06-11 1994-03-29 Albany International Corp. Transfer belt in a press nip closed draw transfer
DE19957617A1 (de) * 1999-11-30 2001-05-31 Voith Paper Patent Gmbh Verfahren zur Herstellung eines Entwässerungsbandes
DE10055708A1 (de) * 2000-11-10 2002-05-16 Voith Paper Patent Gmbh Verfahren und Vorrichtung zur Entwässerung
US6726809B2 (en) * 2001-09-26 2004-04-27 Albany International Corp. Industrial process fabric
US7166196B1 (en) * 2002-12-31 2007-01-23 Albany International Corp. Method for manufacturing resin-impregnated endless belt structures for papermaking machines and similar industrial applications and belt
DE10330966A1 (de) * 2003-07-08 2005-01-27 Voith Paper Patent Gmbh Pressvorrichtung in einer Pressenpartie einer Maschine zur Herstellung einer Faserstoffbahn

Also Published As

Publication number Publication date
EP2360314A2 (fr) 2011-08-24
EP2360314B1 (fr) 2021-04-14
EP2360314A3 (fr) 2012-04-18
EP1754823A3 (fr) 2008-08-27
US20070042851A1 (en) 2007-02-22
US7722741B2 (en) 2010-05-25
EP1754823A2 (fr) 2007-02-21
DE102005039301A1 (de) 2007-02-22

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