EP2360314A2 - Bande de transfert - Google Patents

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Info

Publication number
EP2360314A2
EP2360314A2 EP20110159704 EP11159704A EP2360314A2 EP 2360314 A2 EP2360314 A2 EP 2360314A2 EP 20110159704 EP20110159704 EP 20110159704 EP 11159704 A EP11159704 A EP 11159704A EP 2360314 A2 EP2360314 A2 EP 2360314A2
Authority
EP
European Patent Office
Prior art keywords
machine according
roller
lateral surface
endless belt
underside
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.)
Granted
Application number
EP20110159704
Other languages
German (de)
English (en)
Other versions
EP2360314B1 (fr
EP2360314A3 (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
Publication of EP2360314A2 publication Critical patent/EP2360314A2/fr
Publication of EP2360314A3 publication Critical patent/EP2360314A3/fr
Application granted granted Critical
Publication of EP2360314B1 publication Critical patent/EP2360314B1/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 an endless belt, in particular transfer belt, for a machine for producing a material web, in particular a paper, board or tissue web. Furthermore, the invention relates to a machine for producing a material web, in particular paper, board or tissue web. Moreover, the invention relates to a method for retrofitting an existing machine for producing a material web, in particular a paper, board or Tissuemaschine.
  • Paper, board or tissue machines may have central roll presses.
  • central roller presses with a roller and a plurality of counter-rollers associated with this roller, each forming a press nip with the roller, the wet fibrous web is drawn off the smooth roller (central roller) by an open draw. 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.
  • the known endless belt in particular transfer belt, has an upper side and a lower side arranged opposite the upper side, wherein the intended use of the endless belt, the upper side with the material web, in particular with the paper, cardboard or tissue web, and the underside with the machine in contact is.
  • the endless belt has a storage volume for receiving fluid, which acts on the underside.
  • the fluid acting on the underside of the endless belt is at least partially received in the endless belt.
  • the fluid can be led away from the contact area between the lateral surface of a roller and the underside of the endless belt. Therefore, the force acting on the underside of the endless belt fluid, 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 endless belt.
  • the risk of aquaplaning between the endless 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 endless belt.
  • the porous structure may, for example, comprise a fleece and / or a woven fabric and / or a foamed structure which extends at least in the region of the underside of the endless belt.
  • a particularly preferred embodiment of the invention provides that the storage volume is at least partially provided by the surface structure of the underside.
  • 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 endless belt has a storage volume which changes transversely to the running direction.
  • drag effects in the edge region of the endless 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 endless belt. The best results are achieved when the grooving extends substantially along the running direction of the endless 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 endless 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.
  • a machine for producing a material web in particular a paper, board or tissue web, with a roller with lateral surface and with a peripheral surface of the roller in sections wrapping endless belt, in particular transfer belt proposed.
  • the endless belt has a lower side, which can be brought into contact with the lateral surface in the wrap-around area, wherein the endless belt and / or the roller Storage volume is provided, which is suitable to fluid, which penetrates in the wrap between the bottom and outer surface, at least partially accommodate.
  • the underside is smooth and that the lateral surface has a surface structure to form the storage volume.
  • the underside for forming the storage volume has a surface structure and that the lateral surface is smooth.
  • both the underside and the lateral surface each have a surface structure for forming the storage volume.
  • the surface structure of the lateral surface preferably comprises, alone or in combination, a scoring and / or a roughness of the lateral surface and / or a regular or irregular structure.
  • Such a structure can be achieved, for example, by embossing.
  • plastic may be a thermoplastic or thermosetting plastic.
  • a preferred embodiment of the invention provides that the groove runs essentially in the circumferential direction of the lateral surface.
  • the hydroplaning effect in particular when using the roller in a press arrangement, can be particularly reduced if the storage volume of the lateral surface up to 2000 milliliters per m 2 surface area, preferably between 500 and 1500 milliliters per m 2 area Lateral surface is.
  • the grooves of the lateral surface preferably have a width between 0.2 and 10 mm, preferably between 1 and 5 mm.
  • the ratio of groove depth to groove width is preferably between 10 and 0.2.
  • the roller with a counter-roller preferably forms a press nip, the endless belt and a fibrous web being guided by the press nip, and the endless belt being brought into contact with the roller during the passage through the press nip.
  • the roller may also be a shoe press roll with a circumferential jacket.
  • the claim is to be understood in that the endless belt is brought into contact with the rotating jacket of the shoe press roll when passing through the press nip.
  • the roller are associated with at least two counter-rollers, wherein the counter-rollers with the roller each form a press nip through which each of the endless belt and a fibrous web is guided and wherein when passing through each of the press nips the endless belt respectively with the roller in the Contact is brought.
  • a press arrangement is called Gottzenpresse.
  • the o.g. Roll the central roll.
  • the underside of the endless belt is beschabert and / or cleaned outside of the wrapping area.
  • the Beschabtation a significant proportion of entrained on the underside of the endless belt fluids, water and / or air, are stripped.
  • the risk of aquaplaning can be effectively reduced even if the surface structure of the underside formed, for example, only by a roughness. Since impurities often form attachment sites for fluid and thus more fluid is carried on a contaminated bottom, the risk of aquaplaning can be additionally reduced by cleaning the bottom.
  • At least one scraper associated with the underside is a soft scraper, i.
  • Plastic scraper is that is not fiber reinforced, especially not reinforced with glass and / or carbon fiber is.
  • a non-fiber reinforced PE scraper with a thickness of, for example, 6 mm to call.
  • Such a scraper is marketed, for example, under the name Clouth AS.
  • At least one scraper associated with the underside is a scraper in which the scraper tip can be blown out.
  • a scraper is also referred to as a blow doctor.
  • a gentle treatment and an associated increase in the service life of the endless belt coupled with a very good Beschab ceremoniessrial is achieved if at least one of the underside associated scraper has an angle of incidence relative to the bottom of less than 25 °, in particular between 5 ° and 15 °.
  • At least one scraper for stripping fluid and / or at least one spray tube for cleaning thereof is assigned to the outer surface of the roller outside the belt area.
  • rollers are particularly fiber-reinforced plastic blades.
  • Such doctor blades are sold, for example, under the name Clouth C2 or C100.
  • a method for retrofitting a machine for producing a material web, in particular a paper, board or tissue web, provided under protection has a press section with a roller with a smooth lateral surface and two counter-rollers each forming a press nip with the roller.
  • the roller is wrapped by an endless belt guided by the two press nips, which has a smooth underside which can be brought into contact with the lateral surface.
  • an existing machine with a central roller press can be converted to a machine according to the invention.
  • 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.
  • 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.

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  • Paper (AREA)
  • Sanitary Thin Papers (AREA)
EP11159704.3A 2005-08-19 2006-07-18 Bande de transfert Active EP2360314B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510039301 DE102005039301A1 (de) 2005-08-19 2005-08-19 Transferband
EP20060117369 EP1754823B1 (fr) 2005-08-19 2006-07-18 Bande de transfert

Related Parent Applications (3)

Application Number Title Priority Date Filing Date
EP20060117369 Division-Into EP1754823B1 (fr) 2005-08-19 2006-07-18 Bande de transfert
EP20060117369 Division EP1754823B1 (fr) 2005-08-19 2006-07-18 Bande de transfert
EP06117369.6 Division 2006-07-18

Publications (3)

Publication Number Publication Date
EP2360314A2 true EP2360314A2 (fr) 2011-08-24
EP2360314A3 EP2360314A3 (fr) 2012-04-18
EP2360314B1 EP2360314B1 (fr) 2021-04-14

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 Before (1)

Application Number Title Priority Date Filing Date
EP20060117369 Active EP1754823B1 (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
FI916026A7 (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

Non-Patent Citations (1)

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Title
None

Also Published As

Publication number Publication date
EP1754823B1 (fr) 2014-03-26
DE102005039301A1 (de) 2007-02-22
US7722741B2 (en) 2010-05-25
EP2360314B1 (fr) 2021-04-14
EP2360314A3 (fr) 2012-04-18
EP1754823A3 (fr) 2008-08-27
US20070042851A1 (en) 2007-02-22
EP1754823A2 (fr) 2007-02-21

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