EP1111127A9 - Pressing arrangement - Google Patents

Pressing arrangement Download PDF

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Publication number
EP1111127A9
EP1111127A9 EP00124021A EP00124021A EP1111127A9 EP 1111127 A9 EP1111127 A9 EP 1111127A9 EP 00124021 A EP00124021 A EP 00124021A EP 00124021 A EP00124021 A EP 00124021A EP 1111127 A9 EP1111127 A9 EP 1111127A9
Authority
EP
European Patent Office
Prior art keywords
press
counter
roller
nip
shoe
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
EP00124021A
Other languages
German (de)
French (fr)
Other versions
EP1111127B1 (en
EP1111127A3 (en
EP1111127A2 (en
Inventor
Thomas Thoröre Scherb
Harald Schmidt-Hebbel
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 Paper 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7934297&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1111127(A9) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Voith Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1111127A2 publication Critical patent/EP1111127A2/en
Publication of EP1111127A9 publication Critical patent/EP1111127A9/en
Publication of EP1111127A3 publication Critical patent/EP1111127A3/en
Application granted granted Critical
Publication of EP1111127B1 publication Critical patent/EP1111127B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D21F3/0209—Wet presses with extended press nip
    • D21F3/0218—Shoe presses
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/14—Making cellulose wadding, filter or blotting paper

Definitions

  • the invention relates to a press arrangement of a machine for production a tissue web with at least one between one Shoe press unit and a press roll formed nip, the Shoe press unit at least one opposite the counter roll Press shoe and a flexible, liquid-tight one guided over this Press belt includes, the counter roll has a smooth surface and the Tissue web together with the press belt and at least one felt is passed through the press nip and then separated from the felt and is carried along by the smooth surface of the counter roller.
  • a such a press arrangement can be a part or at least essentially form the entire press arrangement of the tissue machine in question.
  • the aim of the invention is a press arrangement of the type mentioned to create with a higher dryness of the leaving the press nip Tissue web achievable and correspondingly more economical tissue production is guaranteed.
  • This object is achieved according to the invention in that the angle between the tangent applied to the counter roll at the end of the press nip and at least one felt ⁇ 10 ° running out of the press nip, in particular ⁇ 15 °, in particular ⁇ 18 ° and preferably ⁇ 20 °.
  • a shoe press roll with a the press jacket forming the press belt may be provided.
  • a drying cylinder and in particular a is preferably used as the counter roller so-called Yankee cylinder provided.
  • the surface of the press belt can be blind drilled and / or grooved.
  • the press belt has an open area "f" of f ⁇ 25%.
  • the press arrangement according to the invention is advantageously in tissue machines such as in particular a suction breast roll former, twin-wire former, Crescent former, Fourdrinier former and / or the like and / or can be used in combination with through-air drying concepts.
  • the angle ⁇ between that at the end of the press nip 14 to the drying cylinder 18 created tangent 26 and the tapering from the press nip 14 Felt 24 is ⁇ 20 °.
  • the surface of the press jacket 22 can be blind drilled and / or grooved his.
  • the press jacket 22 can in particular have an open area "f" of f ⁇ 25% have.

Landscapes

  • Paper (AREA)
  • Vehicle Body Suspensions (AREA)
  • Cyclones (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Press Drives And Press Lines (AREA)
  • Glass Compositions (AREA)

Abstract

Press section for a machine for producing tissue webs (12) comprises a shoe press unit (16) and a counter-roller (18) forming a nip. The unit has one or more press shoes (20) and a flexible, liquid-impermeable belt (22). The counter-roller has a smooth surface and the web is passed on a felt (24) through the nip where the two are separated. The angle between the tangent ( alpha ) to the counter-roller at the end of the nip and the felt emerging from it is not more than 10 degrees (15, 18, 20), bracketed values being given in order of preference. An Independent claim is included for use of the press section in a machine for producing tissue webs, especially a breast roll former, twin wire former, crescent former or fourdrinier machine, in combination with a through air-drying concept.

Description

Die Erfindung betrifft eine Pressenanordnung einer Maschine zur Herstellung einer Tissuebahn mit wenigstens einem zwischen einer Schuhpreßeinheit und einer Gegenwalze gebildeten Preßspalt, wobei die Schuhpreßeinheit wenigstens einen der Gegenwalze gegenüberliegenden Preßschuh und ein über diesen geführtes flexibles, flüssigkeitsdichtes Preßband umfaßt, die Gegenwalze eine glatte Oberfläche besitzt und die Tissuebahn zusammen mit dem Preßband sowie wenigstens einem Filz durch den Preßspalt geführt ist und im Anschluß daran vom Filz getrennt und durch die glatte Oberfläche der Gegenwalze mitgenommen wird. Eine solche Pressenanordnung kann einen Teil oder zumindest im wesentlichen die gesamte Pressenanordnung der betreffenden Tissuemaschine bilden.The invention relates to a press arrangement of a machine for production a tissue web with at least one between one Shoe press unit and a press roll formed nip, the Shoe press unit at least one opposite the counter roll Press shoe and a flexible, liquid-tight one guided over this Press belt includes, the counter roll has a smooth surface and the Tissue web together with the press belt and at least one felt is passed through the press nip and then separated from the felt and is carried along by the smooth surface of the counter roller. A such a press arrangement can be a part or at least essentially form the entire press arrangement of the tissue machine in question.

Bei einer aus der DE 196 54 198 A1 bekannten Pressenanordnung der eingangs genannten Art mit einem die Gegenwalze bildenden Trockenzylinder läuft die Tissuebahn etwa in der zur Trockenzylinderoberfläche tangentialen Richtung aus dem Preßspalt.In a press arrangement known from DE 196 54 198 A1 type mentioned above with a drying cylinder forming the counter-roller the tissue web runs approximately in the tangential to the drying cylinder surface Direction from the press nip.

Ziel der Erfindung ist, eine Pressenanordnung der eingangs genannten Art zu schaffen, mit der ein höherer Trockengehalt der den Preßspalt verlassenden Tissuebahn erzielbar und entsprechend eine wirtschaftlichere Tissueherstellung gewährleistet ist. The aim of the invention is a press arrangement of the type mentioned to create with a higher dryness of the leaving the press nip Tissue web achievable and correspondingly more economical tissue production is guaranteed.

Diese Aufgabe wird nach der Erfindung dadurch gelöst, daß der Winkel zwischen der am Ende des Preßspaltes an die Gegenwalze angelegten Tangente und wenigstens einem aus dem Preßspalt auslaufenden Filz ≥ 10°, insbesondere ≥ 15°, insbesondere ≥ 18° und vorzugsweise ≥ 20° ist.This object is achieved according to the invention in that the angle between the tangent applied to the counter roll at the end of the press nip and at least one felt ≥ 10 ° running out of the press nip, in particular ≥ 15 °, in particular ≥ 18 ° and preferably ≥ 20 °.

Aufgrund dieser Ausbildung wird auf wirtschaftliche Weise ein höherer Trockengehalt der Tissuebahn nach der Presse erreicht.Because of this training, a higher one becomes economically Dryness of the tissue web reached after the press.

Als Schuhpreßeinheit kann insbesondere eine Schuhpreßwalze mit einem das Preßband bildenden Preßmantel vorgesehen sein.As a shoe press unit, a shoe press roll with a the press jacket forming the press belt may be provided.

Als Gegenwalze ist vorzugsweise ein Trockenzylinder und insbesondere ein sogenannter Yankee-Zylinder vorgesehen.A drying cylinder and in particular a is preferably used as the counter roller so-called Yankee cylinder provided.

Die Oberfläche des Preßbandes kann blindgebohrt und/oder gerillt sein.The surface of the press belt can be blind drilled and / or grooved.

Vorteilhafterweise besitzt das Preßband eine offene Fläche "f" von f ≥ 25 %.Advantageously, the press belt has an open area "f" of f ≥ 25%.

Für eine offene Fläche von beispielsweise f = 36 % eines gerillten Preßbandes bzw. Preßmantels konnte bei einem Ablaufwinkel des Filzes von α = 20° eine Trockengehaltssteigerung von 4,5 % gegenüber dem Trockengehalt erzielt werden, der, anstelle einer Schuhpreßwalze, mit einer konventionellen Saugpreßwalze erreicht wird.For an open area of e.g. f = 36% of a grooved press belt or press jacket could at a discharge angle of the felt of α = 20 ° an increase in dry content of 4.5% compared to the dry content can be achieved, instead of a shoe press roll, with a conventional Suction press roller is reached.

Die erfindungsgemäße Pressenanordnung ist vorteilhafterweise in Tissuemaschinen wie insbesondere einem Saugbrustwalzenformer, Doppelsiebformer, Crescent-Former, Langsiebformer und/oder dergleichen und/oder in Kombination mit "Through-Air-Drying"-Konzepten verwendbar. The press arrangement according to the invention is advantageously in tissue machines such as in particular a suction breast roll former, twin-wire former, Crescent former, Fourdrinier former and / or the like and / or can be used in combination with through-air drying concepts.

Die Erfindung wird im folgenden anhand eines Ausführungsbeispiels unter Bezugnahme auf die Zeichnung näher erläutert:

  • In dieser zeigt die einzige Figur eine schematische Teildarstellung einer Pressenanordnung 10 einer Maschine zur Herstellung einer Tissuebahn 12.
  • Die Pressenanordnung 10 umfaßt einen in Bahnlaufrichtung L verlängerten Preßspalt 14, der zwischen einer als Schuhpreßwalze 16 vorgesehenen Schuhpreßeinheit und einer als Trockenzylinder 18, beispielsweise Yankee-Zylinder, vorgesehenen Gegenwalze gebildet ist.
  • Die Schuhpreßwalze 16 umfaßt einen dem Trockenzylinder 18 gegenüberliegenden Preßschuh 20 und einen über diesen geführten, durch ein flexibles, flüssigkeitsdichtes Preßband gebildeten Preßmantel 22.
  • Die Tissuebahn 12 ist zusammen mit dem Preßmantel 22 sowie einem Filz 24 durch den Preßspalt 14 geführt. Im Anschluß an den Preßspalt 14 wird die Tissuebahn 12 vom Filz 24 getrennt und durch die glatte Oberfläche des Trockenzylinders 18 mitgenommen.
    • The invention is explained in more detail below using an exemplary embodiment with reference to the drawing:
  • In this, the single figure shows a schematic partial representation of a press arrangement 10 of a machine for producing a tissue web 12.
  • The press arrangement 10 comprises a press nip 14 which is extended in the web running direction L and is formed between a shoe press unit provided as a shoe press roll 16 and a counter roll provided as a drying cylinder 18, for example a Yankee cylinder.
  • The shoe press roll 16 comprises a press shoe 20 opposite the drying cylinder 18 and a press jacket 22 guided over it and formed by a flexible, liquid-tight press belt.
  • The tissue web 12 is guided through the press nip 14 together with the press jacket 22 and a felt 24. Following the press nip 14, the tissue web 12 is separated from the felt 24 and carried along by the smooth surface of the drying cylinder 18.

    • Der Winkel α zwischen der am Ende des Preßspaltes 14 an den Trockenzylinder 18 angelegten Tangente 26 und dem aus den Preßspalt 14 auslaufenden Filz 24 ist ≥ 20°.The angle α between that at the end of the press nip 14 to the drying cylinder 18 created tangent 26 and the tapering from the press nip 14 Felt 24 is ≥ 20 °.

    Die Oberfläche des Preßmantels 22 kann blindgebohrt und/oder gerillt sein. The surface of the press jacket 22 can be blind drilled and / or grooved his.

    Der Preßmantel 22 kann insbesondere eine offene Fläche "f" von f ≥ 25 % besitzen. The press jacket 22 can in particular have an open area "f" of f ≥ 25% have.

    BezugszeichenlisteReference list

    1010th
    PressenanordnungPress arrangement
    1212th
    TissuebahnTissue web
    1414
    PreßspaltPress nip
    1616
    SchuhpreßwalzeShoe press roll
    1818th
    TrockenzylinderDrying cylinder
    2020th
    PreßschuhPress shoe
    2222
    PreßmantelPress jacket
    2424th
    Filzfelt
    2626
    Tangentetangent
    LL
    BahnlaufrichtungWeb direction

    Claims (6)

    Pressenanordnung (10) einer Maschine zur Herstellung einer Tissuebahn (12) mit wenigstens einem zwischen einer Schuhpreßeinheit (16) und einer Gegenwalze (18) gebildeten Preßspalt (14), wobei die Schuhpreßeinheit (16) wenigstens einen der Gegenwalze (18) gegenüberliegenden Preßschuh (20) und ein über diesen geführtes flexibles, flüssigkeitsdichtes Preßband (22) umfaßt, die Gegenwalze (18) eine glatte Oberfläche besitzt und die Tissuebahn (12) zusammen mit dem Preßband (22) sowie wenigstens einem Filz (24) durch den Preßspalt (14) geführt ist und im Anschluß daran vom Filz (24) getrennt und durch die glatte Oberfläche der Gegenwalze (18) mitgenommen wird,
    dadurch gekennzeichnet, daß der Winkel (α) zwischen der am Ende des Preßspaltes (14) an die Gegenwalze (18) angelegten Tangente und wenigstens einem aus dem Preßspalt (14) auslaufenden Filz (24) ≥ 10°, insbesondere ≥ 15°, insbesondere ≥ 18° und vorzugsweise ≥ 20° ist.    Press arrangement (10) of a machine for producing a tissue web (12) with at least one press nip (14) formed between a shoe press unit (16) and a counter roller (18), the shoe press unit (16) at least one press shoe (18) opposite the counter roller (18) 20) and a flexible, liquid-tight press belt (22) guided over it, the counter-roller (18) has a smooth surface and the tissue web (12) together with the press belt (22) and at least one felt (24) through the press nip (14 ) and is then separated from the felt (24) and carried along by the smooth surface of the counter-roller (18),
    characterized in that the angle (α) between the tangent applied to the counter-roller (18) at the end of the press nip (14) and at least one felt (24) emerging from the press nip (14) ≥ 10 °, in particular ≥ 15 °, in particular ≥ 18 ° and preferably ≥ 20 °.         Pressenanordnung nach Anspruch 1,
    dadurch gekennzeichnet, daß als Schuhpreßeinheit eine Schuhpreßwalze (16) mit einem das Preßband bildenden Preßmantel (22) vorgesehen.     Press arrangement according to claim 1,
    characterized in that a shoe press roll (16) with a press jacket (22) forming the press belt is provided as the shoe press unit.         Pressenanordnung nach Anspruch 1 oder 2,
    dadurch gekennzeichnet, daß als Gegenwalze ein Trockenzylinder (18) und insbesondere ein sogenannter Yankee-Zylinder vorgesehen ist.    Press arrangement according to claim 1 or 2,
    characterized in that a drying cylinder (18) and in particular a so-called Yankee cylinder is provided as the counter roller.         Pressenanordnung nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, daß die Oberfläche des Preßbandes (22) blindgebohrt und/oder gerillt ist.    Press arrangement according to one of the preceding claims,
    characterized in that the surface of the press belt (22) is blind drilled and / or grooved.         Pressenanordnung nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, daß das Preßband eine offene Fläche "f" von f ≥ 25% besitzt.    Press arrangement according to one of the preceding claims,
    characterized in that the press belt has an open area "f" of f ≥ 25%.         Verwendung einer Pressenanordnung nach einem der vorhergehenden Ansprüche in Tissuemaschinen wie insbesondere einem Saugbrustwalzenformer, Doppelsiebformer, Crescent-Former, Langsiebformer und/oder dergleichen und/oder in Kombination mit "Through-Air-Drying"-Konzepten.Use of a press arrangement according to one of the preceding Claims in tissue machines such as in particular a suction breast roll former, Twin wire former, crescent former, four wire former and / or the like and / or in combination with "Through air drying" concepts.
    EP00124021A 1999-12-23 2000-11-04 Pressing arrangement Expired - Lifetime EP1111127B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE19962708A DE19962708A1 (en) 1999-12-23 1999-12-23 Press arrangement
    DE19962708 1999-12-23

    Publications (4)

    Publication Number Publication Date
    EP1111127A2 EP1111127A2 (en) 2001-06-27
    EP1111127A9 true EP1111127A9 (en) 2001-12-19
    EP1111127A3 EP1111127A3 (en) 2002-01-23
    EP1111127B1 EP1111127B1 (en) 2009-01-28

    Family

    ID=7934297

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP00124021A Expired - Lifetime EP1111127B1 (en) 1999-12-23 2000-11-04 Pressing arrangement

    Country Status (7)

    Country Link
    US (1) US6488814B2 (en)
    EP (1) EP1111127B1 (en)
    AT (1) ATE422009T1 (en)
    BR (1) BRPI0006406A2 (en)
    CA (2) CA2650660C (en)
    DE (2) DE19962708A1 (en)
    PL (1) PL196244B1 (en)

    Families Citing this family (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE10129613A1 (en) * 2001-06-20 2003-01-02 Voith Paper Patent Gmbh Method and device for producing a fibrous web provided with a three-dimensional surface structure
    DE10157694B4 (en) * 2001-11-24 2007-04-12 Voith Patent Gmbh Glättzylinderanordnung
    ES2635323T3 (en) 2011-12-07 2017-10-03 Valmet Aktiebolag Press roller with extended contact area for papermaking machine and tissue paper manufacturing process
    WO2013158010A1 (en) 2012-04-19 2013-10-24 Metso Paper Sweden Ab An extended nip roll, an extended nip press making use of the extended nip roll, a papermaking machine and a method of operating an extended nip press

    Family Cites Families (14)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE3641191A1 (en) * 1986-12-03 1988-06-09 Oberdorfer Fa F METHOD AND DEVICE FOR THE PRODUCTION OF STRONG STABILITY, LIQUID-IMPERMEABLE, BENDABLE PRESSING BANDS, IN PARTICULAR FOR WET PRESSING OF PAPER MACHINES
    DE3742848C3 (en) * 1987-12-17 1996-06-13 Escher Wyss Gmbh Press section of a paper machine
    US5062924A (en) * 1988-04-08 1991-11-05 Beloit Corporation Blanket for an extended nip press with anisotropic woven base layers
    DE4020589A1 (en) * 1990-06-28 1992-01-09 Oberdorfer Fa F Coated press band for paper making machines - has core fabric with flattened warp and/or weft threads
    DE4216264C2 (en) * 1992-05-16 2000-05-25 Voith Sulzer Papiermasch Gmbh Process for drying and loosening a paper web
    DE4340041A1 (en) * 1993-11-24 1994-04-07 Voith Gmbh J M Paper-making machine press section - has two sections with a web transport roller between the shoe presses for consistent character on both sides of the web
    FI109477B (en) * 1995-02-02 2002-08-15 Metso Paper Inc Press section with equalizing press in paper machine
    DE29506352U1 (en) * 1995-04-12 1995-06-01 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Press section
    US5908536A (en) * 1995-10-03 1999-06-01 Valmet Corporation Method and machine for removing water from a paper or board web by pressing
    DE19654198A1 (en) * 1996-12-23 1998-06-25 Voith Sulzer Papiermasch Gmbh Machine for the production of a fibrous web
    US6309512B1 (en) 1998-09-22 2001-10-30 Valmet Karlstad Ab Device for impulse-pressing a web
    SE512799C2 (en) * 1998-09-22 2000-05-15 Valmet Karlstad Ab Press section and shoe press therefore and counter roll for the shoe press
    US6248210B1 (en) * 1998-11-13 2001-06-19 Fort James Corporation Method for maximizing water removal in a press nip
    DE19860687A1 (en) * 1998-12-29 2000-07-06 Voith Sulzer Papiermasch Gmbh Machine and method for producing a fibrous web

    Also Published As

    Publication number Publication date
    PL196244B1 (en) 2007-12-31
    EP1111127B1 (en) 2009-01-28
    CA2650660A1 (en) 2001-06-23
    DE19962708A1 (en) 2001-06-28
    DE50015542D1 (en) 2009-03-19
    ATE422009T1 (en) 2009-02-15
    US20010035103A1 (en) 2001-11-01
    EP1111127A3 (en) 2002-01-23
    PL344739A1 (en) 2001-07-02
    EP1111127A2 (en) 2001-06-27
    US6488814B2 (en) 2002-12-03
    BRPI0006406A2 (en) 2017-01-17
    CA2329554A1 (en) 2001-06-23
    CA2650660C (en) 2011-02-15
    CA2329554C (en) 2009-12-15

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