EP1418270A1 - Dispositif de pressage - Google Patents

Dispositif de pressage Download PDF

Info

Publication number
EP1418270A1
EP1418270A1 EP03103973A EP03103973A EP1418270A1 EP 1418270 A1 EP1418270 A1 EP 1418270A1 EP 03103973 A EP03103973 A EP 03103973A EP 03103973 A EP03103973 A EP 03103973A EP 1418270 A1 EP1418270 A1 EP 1418270A1
Authority
EP
European Patent Office
Prior art keywords
press
nip
web
arrangement according
transfer
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.)
Withdrawn
Application number
EP03103973A
Other languages
German (de)
English (en)
Inventor
Janne Andberg
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
Application filed by Voith Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1418270A1 publication Critical patent/EP1418270A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • D21F3/04—Arrangements thereof
    • D21F3/045—Arrangements thereof including at least one extended press nip
    • 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
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus

Definitions

  • the invention relates to a press arrangement for treating a material web, in particular paper or cardboard web, with at least one Long nip press, which has a press nip extended in the direction of web travel forms.
  • Characteristic of so-called "tandem NipcoFlex" press arrangements are the two double felted long gap presses.
  • the fiber web is guided after the first press nip because of the still relatively high humidity to ensure a secure web guidance between the two press felts of the first press nip.
  • a press arrangement of the type mentioned at the outset is, for example, from EP 0 740 017 B.
  • the material web is covered by a smooth lower roller of the last press nip in a short free pull on the dryer fabric of the first cylinder group given the dryer section.
  • the invention has for its object an improved press arrangement to create the type mentioned.
  • an improved press arrangement to create the type mentioned.
  • open drafts and rewetting are avoided.
  • Uniform drainage is particularly intended for smooth web surfaces can be achieved.
  • This object is achieved in that in the web running direction after the last extended nip press viewed one by one Smoothing press formed nip provided and the material web in continuous closed train is guided through the press assembly.
  • the material web is following the last extended nip press through its bottom felt a transfer nip, in the area of which the material web Transfer belt is transferred, the material web together with the Transfer belt is passed through the smoothing press.
  • the transfer belt preferably has at least on that of the material web facing side a smooth surface.
  • the transfer belt is in the region of the Transfernips is guided around a transfer roller, which forms the Transfer nips within the loop of the bottom felt of the last long nip press arranged counter roll is opposite.
  • the transfer roller preferably has one made of elastic material existing surface. In comparison with a hard nip, one allows such elastic surface pressure variations in the transfer nip.
  • the transfer roller can for example be coated with elastic material.
  • the elastic material can be made of rubber and / or the like, for example consist.
  • the transfer roller can, but need not, be elastic, since the transfer ribbon can also be elastic.
  • the material web is advantageously connected to the transfer nip along with the transfer belt around the transfer roller and the Bottom felt of the last long nip press passed around the counter roll, whereby the bottom felt is separated from the material web and the transfer belt.
  • the transfer ribbon can be used together with the transfer nip the material web to the smoothing nip continued around the transfer roller his.
  • the smoothing nip is preferably between that by the transfer roller supported smooth transfer ribbon and a smooth surface Smoothing roller formed.
  • the transfer belt can then be connected to the smoothing nip over a certain distance over the smoothing roller be led.
  • the material web is preferably up to following the smoothing nip a web take-off point led around the smoothing roller.
  • the material web can in particular removed from the smoothing roller by a circumferential, air-permeable band become.
  • a suction box or the like is provided to support the web inspection.
  • the air-permeable band can be, for example, through a dryer fabric be formed by the material web of a dryer section of the concerned Paper machine is fed.
  • the smoothing roller is heated. So that the temperature be increased in the material web before entering the dryer section.
  • the smoothing roller does not necessarily have to be heated. So could under certain circumstances problems with the web acceptance from this smoothing roller occur. A suction box could prevent this phenomenon become.
  • the smoothing roller expediently has a larger outside diameter than the transfer roller.
  • the transfer roller can for example have a larger outer diameter possess than those within the loop of the bottom felt of the last long nip press arranged counter roll.
  • the press arrangement according to the invention can thus, for example, as such called “tandem NipcoFlex" press arrangement with a downstream Smoothing press to be executed.
  • the single figure shows a schematic partial representation a press arrangement 10 for treating a material web, preferably Fibrous web, which is in particular a paper or Cardboard web can act.
  • a material web preferably Fibrous web, which is in particular a paper or Cardboard web can act.
  • the press arrangement 10 comprises at least one and preferably two Long-nip or shoe presses, each one in the web running direction L form an extended press nip. In the only figure there is one, one to recognize extended press nip 12 long gap press 14, the here forms the second press nip of the press assembly 10.
  • nip 16 formed by a smoothing press is provided.
  • the press arrangement 10 is described in more detail below designed so that there is a continuously closed train.
  • the long nip press forming the second press nip 14 double felted Viewed in the web running direction L in front of this Long nip press 14, another long nip press can be provided. This long nip press can also be felted twice, for example his.
  • the press assembly 10 can thus, for example, as a so-called "Tandem NipcoFlex" press arrangement with downstream smoothing press be executed.
  • the material web is connected to the last extended nip press 14 after separation of the lower felt 18 and upper felt 19 together with the Bottom felt 18 led to a transfer nip 20, which in the present case forms third nip of the press assembly 10.
  • the material web in the Transfer the area of the transfer nip 20 to a transfer belt 22. Subsequently the material web together with this transfer belt 22 performed the smoothing nip 16.
  • the transfer belt 22 has at least on its side facing the material web Side a smooth surface.
  • the transfer belt 22 is around a transfer roller 24 out.
  • This transfer roller lies to form the transfer nip 20 24 one within the loop of the bottom felt 18 of the last Long nip press 14 arranged opposite roller 26.
  • the transfer roller 24 can be an elastic material Possess surface. It can be coated accordingly.
  • the elastic material in question can be made of rubber and / or, for example the like exist.
  • the transfer belt 22 is put together after the transfer nip 20 continue with the material web to the smoothing nip 16 around the transfer roller 24 out.
  • the fourth nip of the press arrangement 10 forming smoothing nip 16 is between the through the transfer roller 24 supported smooth transfer belt 22 and a smooth surface possessing smoothing roller 28 is formed.
  • the transfer belt 22 following the smoothing nip 16 over a certain distance guided over the smoothing roller 28.
  • the material web is between the transfer belt 22 and the smoothing roller 28.
  • the transfer belt 22 is then in the area of a deflection roller 30 against the material web and the smoothing roller 28 separately.
  • the material web is up to a web take-off area 32 continues around the smoothing roller 28.
  • the material web is, for example, this web removal area 32 through a circumferential air-permeable belt 34 from the smoothing roller 28 decreased.
  • the air-permeable band 34 is, for example formed by a dryer fabric through which the web of material the dryer section of the relevant paper machine is fed. in the In the present case, the material web together with the dryer fabric 34 first around a deflection roller 36 and then the first Drying cylinder 38 supplied to the dryer section.
  • a suction box 40 or the like be provided to remove the web of material from the smoothing roller 28 to support accordingly.
  • the smoothing roller 28 can in particular be heated.
  • the smoothing roller 28 have a larger outer diameter than the transfer roller 24.
  • the outer diameter of the transfer roller 24 can be larger than the outer diameter the inside of the loop of the bottom felt 18 of the last Long nip press 14 arranged counter roll 26.
  • the press arrangement 10 according to the invention can thus, for example, as "Tandem NipcoFlex" press arrangement with downstream smoothing press be executed.
  • the material web follows after by a long gap or Shoe press formed second nip 12 the bottom felt 18 of this last Long nip press 14. It comes into contact with a transfer belt 22, that before the third nip, i.e. before the Transfernip 20, via a transfer roller 24 runs, which preferably has an elastic surface, for example rubber to avoid blistering. In the third nip, i.e. in the transfer nip 20, the material web is transferred to the transfer belt 22 transferred, part of the rewetting water back into the felt is pressed.
  • the fourth nip 16 of the press assembly 10 is called a smoothing nip referred to, since the material web is easily between two smooth surfaces, i.e.
  • the optional coating of elastic material e.g. Rubber, allows pressure variations in compared to a hard nip the smoothing nip 16. With the heating of the smoothing roller 28, the temperature increased in the material web before entering the dryer section.
  • elastic material e.g. Rubber
  • Appropriate control can e.g. be taken into account that with a load on the transfer roller 24, the line force both in Transfer nip 20 and the smoothing nip 16 is increased. For example, the line force in the transfer nip 20 via the counter roller 26 accordingly be adjusted.

Landscapes

  • Paper (AREA)
EP03103973A 2002-11-06 2003-10-27 Dispositif de pressage Withdrawn EP1418270A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10251666 2002-11-06
DE2002151666 DE10251666A1 (de) 2002-11-06 2002-11-06 Pressenanordnung

Publications (1)

Publication Number Publication Date
EP1418270A1 true EP1418270A1 (fr) 2004-05-12

Family

ID=32103374

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03103973A Withdrawn EP1418270A1 (fr) 2002-11-06 2003-10-27 Dispositif de pressage

Country Status (2)

Country Link
EP (1) EP1418270A1 (fr)
DE (1) DE10251666A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1775377A1 (fr) * 2005-10-13 2007-04-18 Voith Patent GmbH Agencement de presse

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2751245A1 (de) * 1977-11-16 1979-06-21 Valmet Oy Verfahren und vorrichtung zur verbesserung der entwaesserung im pressenteil einer papiermaschine
DE3415457A1 (de) * 1983-05-06 1984-11-15 Valmet Oy, Helsinki Geschlossene pressenpartie einer papiermaschine
EP0740017A1 (fr) * 1995-04-24 1996-10-30 Valmet Paper Machinery Inc. Section de pressage d'une machine à papier, comprenant deux interstices de pressage préparés
EP0828027A2 (fr) * 1996-08-20 1998-03-11 Voith Sulzer Papiermaschinen GmbH Section de presse et procédé pour la déshydratation d'une bande fibreuse humide
DE20117558U1 (de) * 2001-08-01 2002-04-18 Voith Paper Patent Gmbh Pressenanordnung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2751245A1 (de) * 1977-11-16 1979-06-21 Valmet Oy Verfahren und vorrichtung zur verbesserung der entwaesserung im pressenteil einer papiermaschine
DE3415457A1 (de) * 1983-05-06 1984-11-15 Valmet Oy, Helsinki Geschlossene pressenpartie einer papiermaschine
EP0740017A1 (fr) * 1995-04-24 1996-10-30 Valmet Paper Machinery Inc. Section de pressage d'une machine à papier, comprenant deux interstices de pressage préparés
EP0828027A2 (fr) * 1996-08-20 1998-03-11 Voith Sulzer Papiermaschinen GmbH Section de presse et procédé pour la déshydratation d'une bande fibreuse humide
DE20117558U1 (de) * 2001-08-01 2002-04-18 Voith Paper Patent Gmbh Pressenanordnung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1775377A1 (fr) * 2005-10-13 2007-04-18 Voith Patent GmbH Agencement de presse

Also Published As

Publication number Publication date
DE10251666A1 (de) 2004-06-03

Similar Documents

Publication Publication Date Title
EP1316641B1 (fr) Section de pressage
DE102006003910A1 (de) Pressenpartie einer Materialbahn-Herstellungsmaschine
DE102018124016A1 (de) Vorrichtung und Verfahren zur Entwässerung einer Faserstoffbahn
DE102008000211A1 (de) Vorrichtung zur Herstellung von Tissuebahnen
EP1586697A1 (fr) Machine à papier
EP1739228B1 (fr) Machine pour fabriquer une bande fibreuse
WO2007003504A1 (fr) Procede de fabrication d'une bande continue de papier, en particulier de papier heliographique
DE102012202535A1 (de) Entwässerungsvorrichtung
DE19801417A1 (de) Pressenpartie
EP1418270A1 (fr) Dispositif de pressage
DE102010031320A1 (de) Maschine mit einer Pressenpartie und Verfahren zur Herstellung einer Faserstoffbahn
DE10305754A1 (de) Pressanordnung
DE102005050281A1 (de) Pressanordnung
EP2235256A1 (fr) Dispositif de fabrication et/ou de traitement d'une bande de matière fibreuse
EP1743974B1 (fr) Section de presse
EP1394320B1 (fr) Dispositif de pressage
DE19919085A1 (de) Entwässerungsvorrichtung
DE102009045185A1 (de) Maschine zur Herstellung einer Faserstoffbahn
DE102010031447A1 (de) Verfahren und Maschine zur Herstellung einer Faserstoffbahn
DE102005009858A1 (de) Papiermaschine
EP1936028B1 (fr) Machine à papier
DE102019125929A1 (de) Maschine und Verfahren zur Herstellung einer Dekorrohpapierbahn
EP2022891A2 (fr) Agencement de presse
DE10306247A1 (de) Pressanordnung
EP2305882A2 (fr) Procédé et machine destinés à la fabrication d'une bande de matière fibreuse

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

17P Request for examination filed

Effective date: 20041112

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AXX Extension fees paid

Extension state: MK

Payment date: 20041112

Extension state: LV

Payment date: 20041112

Extension state: LT

Payment date: 20041112

Extension state: AL

Payment date: 20041112

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: VOITH PATENT GMBH

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20060503