EP1316641A1 - Section de pressage - Google Patents

Section de pressage Download PDF

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Publication number
EP1316641A1
EP1316641A1 EP02016712A EP02016712A EP1316641A1 EP 1316641 A1 EP1316641 A1 EP 1316641A1 EP 02016712 A EP02016712 A EP 02016712A EP 02016712 A EP02016712 A EP 02016712A EP 1316641 A1 EP1316641 A1 EP 1316641A1
Authority
EP
European Patent Office
Prior art keywords
press
fibrous web
section according
transfer belt
nip
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
EP02016712A
Other languages
German (de)
English (en)
Other versions
EP1316641B1 (fr
Inventor
Ulrich Begemann
Ingolf Cedra
Thomas Augscheller
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 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 EP1316641A1 publication Critical patent/EP1316641A1/fr
Application granted granted Critical
Publication of EP1316641B1 publication Critical patent/EP1316641B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • D21F3/04—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

Definitions

  • the invention relates to a press section for dewatering a paper, cardboard, Tissue or another fibrous web with at least three press nips, wherein through the press nip next to the fibrous web at least one endlessly revolving one Drainage belt for receiving the squeezed water is guided and at least one press roll involved in the formation of a press nip a smooth one Has surface and comes into contact with the fibrous web.
  • the object of the invention is therefore in the press section in addition to a high Drainage performance also low bilateral roughness guarantee.
  • the object was achieved in that the fibrous web is passed through at least one press nip together with an endlessly circulating, smooth transfer belt, the transfer belt coming into contact with the side of the fibrous web opposite the smooth press roller. It is advantageous if the transfer belt runs only through a press nip and the fibrous web passes from the press nip with the transfer belt to a subsequent press nip, this subsequent press nip being formed by two press rolls, one of which has a smooth surface and with the fibrous web in Contact comes.
  • the three press nips ensure high drainage performance. Furthermore is achieved by contacting the fibrous web with a smooth transfer belt in one Press nip and the contact of the opposite side of the fibrous web with the smooth press roll in the preferably following press nip the smoothness on both Sides of the fibrous web increased to about the same extent.
  • Press nip to be extended with the transfer belt and preferably by a shoe roll and a cylindrical counter roll are formed.
  • a press nip upstream and this upstream press nip preferably form the first press nip of the press section.
  • the upstream press nip can be extended and preferably formed by a shoe roller and a cylindrical counter roller be or to minimize the effort of two cylindrical Press rolls are formed.
  • the following press nip should be the last press nip of the Press section. It is sufficient if the following nip of two cylindrical press rolls is formed. For the smoothing result and in the interest a preheating of the fibrous web for a subsequent one Drying process, it is advantageous if at least one press roller of the following Press nip is heated, this heated press roll preferably with the Fibrous web comes into contact.
  • the fibrous web should at least from the first to the last press nip Press section of at least one belt in the form of a drainage belt, Transfer belt or similar be supported.
  • the press section is generally followed by one to dry the fibrous web Drying section with preferably several drying groups for drying the Fibrous web.
  • the Fibrous web meandering from a dryer fabric supports the drying cylinders and wraps around guide rollers. This allows for simplification or for conversions, that the heated press roll of the following press nip from a drying cylinder is formed.
  • the dryer fabric is in the areas between the guide roller and the drying cylinder a suction device assigned, which the adhesion of the fibrous web on Reinforced dryer fabric.
  • a suction zone with increased negative pressure.
  • a particularly simple construction results if the transfer belt is above the Fibrous web runs.
  • the one running under the transfer belt can Drainage tape the fibrous web directly to that above the fibrous web Pass the running drainage belt of the following press nip.
  • Drying groups with a dryer fabric running above the fibrous web offer considerable advantages in the event of demolition or transfer, since the Fiber web can be easily discharged into the machine cellar. there can with advantage, the transfer of the fibrous web to the dryer fabric from one of the Dryer sieve wrapped in the form of a suction roll, one Suction box or similar get supported.
  • the transfer belt runs under the fibrous web, it is advantageous if the fibrous web is transferred from the transfer belt to another, preferably air-permeable transfer belt and from there to the dewatering belt of the following press nip running beneath the fibrous web.
  • the drainage belts and preferably also the air-permeable transfer belt should be designed as a press felt.
  • the smooth transfer ribbon should be impermeable to air and water.
  • the smooth transfer belt is only through the last press nip runs and the smooth press roll is present in the second press nip and with the Fibrous web comes into contact.
  • the figure shows a schematic cross section through a press section according to the invention and the beginning of a following Drying section of a paper machine for producing the fibrous web 1.
  • the press section has three press nips, each of two rotating and press rolls 7, 8, 9, 10, 11, 12 pressed against one another are formed, wherein in addition to the fibrous web 1 at least one drainage belt 2,3,4,5 through each Press nip is performed.
  • the endless circulating drainage belts 2,3,4,5 are used to pick up and remove the in the press nip from the fibrous web 1 pressed water and are here as air and water permeable press felts educated.
  • the first two press nips of the press section are extended and are each from a shoe roll 9,11 lying above the fibrous web 1 as well as a lower cylindrical counter roll 10, 12.
  • the extended one Press nip enables intensive, yet gentle drainage of the Fibrous web 1.
  • the Shoe rollers 9, 11 a flexible roller jacket, which is in the area of the press nip is guided over a pressing element with a concave pressing surface.
  • the lower dewatering belt 3 of the first press nip passes the Fibrous web 1 after the press nip to a smooth, endlessly circulating and air and water-impermeable transfer belt 6 of the second press nip, which over the fibrous web 1 runs.
  • the fibrous web 1 then runs through together with the transfer belt 6 and the one below Drainage belt 4 the second press nip. Because of the pre-drainage in the the first, upstream press nip is sufficient in the second press nip Drainage belt 4 for receiving the squeezed water.
  • the smooth transfer belt 6 in the second press nip next to one further drainage to smooth the top of the fibrous web 1.
  • the lower dewatering belt 4 passes the second Press gap the fibrous web 1 to a running over the fibrous web 1 Drainage belt 5 of the following, last press nip of the press section.
  • This third press nip is formed by two cylindrical press rolls 7,8, one of which deflection-controlled.
  • the fibrous web 1 occurs in and after the last press nip with the lower press roll 8 in direct contact.
  • the lower Press roller 8 therefore a smooth and closed surface. So it succeeds To significantly reduce bilateral smoothness.
  • the lower one Press roller 8 still heated, so that the fiber web 1 is already predrying takes place.
  • This heating also promotes through the formation of a vapor cushion the detachment and transfer of the fibrous web 1 to a dryer 15 of the first Drying group of the following dryer section for drying the fibrous web 1.
  • the dryer fabric 15 is guided directly to the lower press roller 8, the Removal of the fibrous web 1 from one wrapped by the dryer fabric 15 Suction device 16 is supported in the form of a known suction box.
  • At least the first drying group is made up of a number of drying cylinders 13 formed between which guide rollers 14 are arranged, the fibrous web 1
  • the drying cylinders 13 and 10 are supported in a meandering shape by the drying wire 15 Guide rollers 14 wraps around.
  • the fibrous web 1 comes in directly for drying Contact with the heated drying cylinders 13.
  • Similar or other drying groups follow the dryer section.
  • the fibrous web 1 can be taken over by an air-permeable one Drainage belt 2.5 with the help of a drainage belt 2.5 looped suction roller are supported.
  • the transfer belt 6 it is also possible for the transfer belt 6 to run under the fibrous web 1 to let. Then, of course, the smooth press roll 8 of the following, last one Press nip can be arranged over the fibrous web 1.

Landscapes

  • Paper (AREA)
  • Resistance Heating (AREA)
EP02016712A 2001-12-01 2002-07-26 Section de pressage Expired - Fee Related EP1316641B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10159115A DE10159115A1 (de) 2001-12-01 2001-12-01 Pressenpartie
DE10159115 2001-12-01

Publications (2)

Publication Number Publication Date
EP1316641A1 true EP1316641A1 (fr) 2003-06-04
EP1316641B1 EP1316641B1 (fr) 2006-10-04

Family

ID=7707748

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02016712A Expired - Fee Related EP1316641B1 (fr) 2001-12-01 2002-07-26 Section de pressage

Country Status (4)

Country Link
US (1) US6863776B2 (fr)
EP (1) EP1316641B1 (fr)
AT (1) ATE341661T1 (fr)
DE (2) DE10159115A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006074834A1 (fr) * 2005-01-15 2006-07-20 Voith Patent Gmbh Ensemble presse
EP1777340A1 (fr) * 2005-10-20 2007-04-25 Voith Patent GmbH Agencement de presse
EP1777342A1 (fr) * 2005-10-20 2007-04-25 Voith Patent GmbH Agencement de presse
US10280562B2 (en) * 2014-09-15 2019-05-07 Upm Specialty Papers Oy Process to manufacture low weight high quality paper for use as a support layer of a release liner with a belt assembly

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1662042B1 (fr) * 2003-05-13 2009-11-04 Oji Paper Co., Ltd. Presse a lisser de presse a papier, presse de machine a papier a presse a lisser, et procede de fabrication de papier
FI114647B (fi) * 2003-07-02 2004-11-30 Metso Paper Inc Sovitelma rainan hallitsemiseksi paperi- tai kartonkikoneen puristinosalla
DE10333139A1 (de) * 2003-07-22 2005-02-17 Voith Paper Patent Gmbh Pressenpartie
DE10342733A1 (de) * 2003-09-16 2005-04-21 Voith Paper Patent Gmbh Pressanordnung
DE102005031202A1 (de) * 2005-07-01 2007-01-25 Voith Patent Gmbh Verfahren zur Herstellung einer Papierbahn, insbesondere Tiefdruckpapier
DE102011005747A1 (de) 2011-03-18 2012-09-20 Voith Patent Gmbh Blattbindungsvorrichtung
DE102011081239A1 (de) 2011-08-19 2013-02-21 Voith Patent Gmbh Blattbildungsvorrichtung
DE102011083367A1 (de) 2011-09-26 2013-03-28 Voith Patent Gmbh Former für eine Maschine zur Herstellung einer Faserstoffbahn aus wenigstens einer Faserstoffsuspension

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01139890A (ja) * 1987-11-25 1989-06-01 Mitsubishi Heavy Ind Ltd 抄紙機プレス装置
EP0705937A1 (fr) * 1994-10-06 1996-04-10 Valmet Corporation Section de presse dans une machine à papier comportant une presse d'égalisation
US5762761A (en) * 1995-04-24 1998-06-09 Valmet Corporation Press section of a paper machine employing two separate press nips

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4321406A1 (de) * 1993-06-26 1993-11-11 Voith Gmbh J M Naßpartie einer Papiermaschine mit einer Siebpartie und einer Pressenpartie
DE4340041A1 (de) * 1993-11-24 1994-04-07 Voith Gmbh J M Pressenpartie für eine Papiermaschine
US5876565A (en) * 1994-10-06 1999-03-02 Valmet Corporation Press section with an equalizing nip for compensating for elongation of a paper web
US5766422A (en) * 1996-08-01 1998-06-16 Beloit Technologies, Inc. Lightweight high temperature pressing
DE19633422A1 (de) * 1996-08-20 1998-02-26 Voith Sulzer Papiermasch Gmbh Pressenpartie und Verfahren zum Entwässern einer wässrigen Faserstoffbahn

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01139890A (ja) * 1987-11-25 1989-06-01 Mitsubishi Heavy Ind Ltd 抄紙機プレス装置
EP0705937A1 (fr) * 1994-10-06 1996-04-10 Valmet Corporation Section de presse dans une machine à papier comportant une presse d'égalisation
US5762761A (en) * 1995-04-24 1998-06-09 Valmet Corporation Press section of a paper machine employing two separate press nips

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 18 5 June 2001 (2001-06-05) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006074834A1 (fr) * 2005-01-15 2006-07-20 Voith Patent Gmbh Ensemble presse
EP1777340A1 (fr) * 2005-10-20 2007-04-25 Voith Patent GmbH Agencement de presse
EP1777342A1 (fr) * 2005-10-20 2007-04-25 Voith Patent GmbH Agencement de presse
US10280562B2 (en) * 2014-09-15 2019-05-07 Upm Specialty Papers Oy Process to manufacture low weight high quality paper for use as a support layer of a release liner with a belt assembly

Also Published As

Publication number Publication date
DE10159115A1 (de) 2003-06-18
US6863776B2 (en) 2005-03-08
US20030101881A1 (en) 2003-06-05
DE50208327D1 (de) 2006-11-16
ATE341661T1 (de) 2006-10-15
EP1316641B1 (fr) 2006-10-04

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