EP1096064A2 - Procédé et dispositif pour la déshydratation d' une bande fibreuse - Google Patents

Procédé et dispositif pour la déshydratation d' une bande fibreuse Download PDF

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Publication number
EP1096064A2
EP1096064A2 EP00120906A EP00120906A EP1096064A2 EP 1096064 A2 EP1096064 A2 EP 1096064A2 EP 00120906 A EP00120906 A EP 00120906A EP 00120906 A EP00120906 A EP 00120906A EP 1096064 A2 EP1096064 A2 EP 1096064A2
Authority
EP
European Patent Office
Prior art keywords
fibrous web
web
displacement
dewatering
gas
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.)
Ceased
Application number
EP00120906A
Other languages
German (de)
English (en)
Other versions
EP1096064A3 (fr
Inventor
Joachim Dr. Grabscheid
Karl Josef Böck
Ulrich Begemann
Thomas Dr. Elenz
Peter Mirsberger
Hans Dr. Dahl
Hannes Dr. Vomhoff
David Beck
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 EP1096064A2 publication Critical patent/EP1096064A2/fr
Publication of EP1096064A3 publication Critical patent/EP1096064A3/fr
Ceased 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
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/48—Suction apparatus

Definitions

  • the invention relates to a method for dewatering a fibrous web, in particular a paper or cardboard web in which the fibrous web is led through a drainage zone in which it at least partly through exposure to pressurized Displacement gas is dewatered. It also relates to a device according to the preamble of claim 9.
  • the extent of this compression depends on the ratio of permeability the membrane and the nonwoven. With targeted compression can determine the dry content and specific volume of the finished fibrous web can be set.
  • the compression of the nonwoven can in the displacement drainage system in practice, however, only with difficulty control, because the membrane permeability in the operation of the production plant difficult to change. This results in the same for the rest Process conditions at a certain gas pressure a certain dry content and a certain specific volume.
  • the aim of the invention is to provide a method and an apparatus at the beginning to create the type with which the process parameters of the displacement drainage process selectively adjustable and accordingly the result of the displacement drainage process with regard to the achieved Dry content and the paper technology properties of the Finished product such as specific volume, porosity, surface roughness and / or the like can be influenced in a targeted manner.
  • this object is achieved according to the invention solved that the fibrous web within the dewatering zone one after the other is acted upon by several gas pressure pulses.
  • the fibrous web within the drainage zone by several at a distance displacement drainage units arranged from each other.
  • the level of the pressure of at least one gas pressure pulse is advantageous adjustable.
  • the pressures of the various gas pressure pulses expediently adjustable separately from one another. Is the fibrous web within the drainage zone by several at a distance displacement drainage units arranged from each other guided, so are advantageously within the various displacement drainage units prevailing pressures accordingly adjustable.
  • the degree of compression can thus at least partially e.g. by the amount of in the respective displacement drainage units prevailing pressure can be determined.
  • Controlled drainage process and properties such as dryness, Density, porosity and / or the like can be influenced.
  • displacement drainage can also take place without such a membrane.
  • the displacement gas is applied from one side Fibrous web together with at least one wire or felt belt led through the drainage zone, that on the other Web side is arranged.
  • the gas pressure pulsates i.e. preferred time changes at a certain frequency.
  • the task becomes corresponding solved in that the fibrous web within the dewatering zone can be acted upon successively by several gas pressure pulses.
  • the drainage directions of the different drainage units can be different and e.g. alternating from top to bottom run.
  • a Tissue On the side of the fibrous web facing away from the gas pressure, a Tissue arranged, which is a barrier layer.
  • This barrier layer allows the dewatered fluid to pass in one direction only from the fibrous web to the felt (antirewetting fabric).
  • the barrier layer can be integrated in the felt.
  • Figure 1 shows a schematic representation of an exemplary embodiment a device 10 for dewatering a fibrous web 12.
  • the fibrous web 12 can in particular be a paper or Trade cardboard web.
  • the dewatering device 10 comprises a dewatering zone E, in which the fibrous web 12 is at least partially dewatered by exposure to pressurized displacement gas 14.
  • the fibrous web 12 is guided within the dewatering zone E through a plurality of displacement dewatering units 16 to 22 arranged at a distance from one another. In the present embodiment, four such displacement drainage units are provided. As a result, the fibrous web 12 within the dewatering zone E is acted upon successively by a plurality of gas pressure pulses 14 1 to 14 4 .
  • the level of the pressure p 1 to p 4 of at least one gas pressure pulse 14 1 to 14 4 can be adjustable. All pressures p 1 to p 4 are expediently adjustable. The pressures p 1 to p 4 of the different gas pressure pulses 14 1 to 14 4 can in particular be adjustable separately from one another. In the present case, the pressures prevailing within the various displacement drainage units 16 to 22 can be adjusted accordingly.
  • the fibrous web acted on from one side with displacement gas 14 12 is together with at least one sieve or felt belt 24 through drainage zone E, that on the other side of the belt is arranged.
  • the fibrous web 12 is also passed through the drainage zone E together with a membrane 26.
  • the fibrous web 12 is thus through this membrane 26 can be acted upon with the displacement gas 14.
  • the fibrous web 12 is from above with the Displacement gas 14 applied.
  • the membrane 26 is here above of the nonwoven 12 is arranged.
  • the drainage directions of the different drainage units can be different and e.g. alternating from top to bottom run.
  • a series connection of several Drainage zones of the type indicated in Figures 1 and 2 are provided his.

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  • Paper (AREA)
EP00120906A 1999-10-27 2000-09-26 Procédé et dispositif pour la déshydratation d' une bande fibreuse Ceased EP1096064A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19951794 1999-10-27
DE19951794A DE19951794A1 (de) 1999-10-27 1999-10-27 Verfahren und Vorrichtung zur Entwässerung einer Faserstoffbahn

Publications (2)

Publication Number Publication Date
EP1096064A2 true EP1096064A2 (fr) 2001-05-02
EP1096064A3 EP1096064A3 (fr) 2002-01-23

Family

ID=7927079

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00120906A Ceased EP1096064A3 (fr) 1999-10-27 2000-09-26 Procédé et dispositif pour la déshydratation d' une bande fibreuse

Country Status (3)

Country Link
US (1) US6475343B1 (fr)
EP (1) EP1096064A3 (fr)
DE (1) DE19951794A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI110620B (fi) * 2001-10-03 2003-02-28 Metso Paper Inc Menetelmä ja laitteisto kuitumassasuspension suotauttamiseksi
US6855227B2 (en) * 2003-01-31 2005-02-15 Voith Paper Patent Gmbh Paper machine and method of dewatering a fiber web using displacement pressing and through air drying
US7297233B2 (en) * 2004-01-30 2007-11-20 Voith Paper Patent Gmbh Dewatering apparatus in a paper machine
US20050167067A1 (en) * 2004-01-30 2005-08-04 Bob Crook Dewatering fabric in a paper machine
JP5269486B2 (ja) * 2008-05-30 2013-08-21 ユニ・チャーム株式会社 凹凸模様を有する嵩高紙及びその製造方法
JP5269485B2 (ja) * 2008-05-30 2013-08-21 ユニ・チャーム株式会社 凹凸模様を有する嵩高紙及びその製造方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1461103A1 (de) * 1963-03-18 1968-12-19 Huyck Corp Verfahren und Vorrichtung zur Beseitigung von Wasser von einer Papierbahn
DE4342608A1 (de) * 1993-12-14 1995-03-30 Voith Gmbh J M Vorrichtung und Verfahren zur Steigerung des Bahntrockengehaltes einer Papierbahn

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3574261A (en) * 1968-09-24 1971-04-13 Grace W R & Co Apparatus and method for drying permeable webs
US3657069A (en) * 1969-12-18 1972-04-18 Robert R Candor Method and apparatus for treatment of sheet-like material
US4157938A (en) * 1977-04-21 1979-06-12 The Procter & Gamble Company Method and apparatus for continuously expelling an atomized stream of water from a moving fibrous web
DE3701406A1 (de) * 1987-01-20 1988-07-28 Vib Apparatebau Gmbh Vorrichtung zum aufbringen von dampf auf eine materialbahn, wie papier
US5482594A (en) * 1991-08-21 1996-01-09 Salminen; Reijo Liquid removal apparatus and method for wood pulp
FI91301C (fi) * 1991-09-12 1994-06-10 Valmet Paper Machinery Inc Höyrylaatikko
US5445746A (en) * 1992-08-28 1995-08-29 Cer-Wat Corporation Method for dewatering a porous wet web
FI102623B (fi) * 1995-10-04 1999-01-15 Valmet Corp Menetelmä ja laite paperikoneessa
US6096169A (en) * 1996-05-14 2000-08-01 Kimberly-Clark Worldwide, Inc. Method for making cellulosic web with reduced energy input
US6083346A (en) * 1996-05-14 2000-07-04 Kimberly-Clark Worldwide, Inc. Method of dewatering wet web using an integrally sealed air press
US6143135A (en) * 1996-05-14 2000-11-07 Kimberly-Clark Worldwide, Inc. Air press for dewatering a wet web
US6197154B1 (en) * 1997-10-31 2001-03-06 Kimberly-Clark Worldwide, Inc. Low density resilient webs and methods of making such webs
US6306257B1 (en) * 1998-06-17 2001-10-23 Kimberly-Clark Worldwide, Inc. Air press for dewatering a wet web
US6085437A (en) * 1998-07-01 2000-07-11 The Procter & Gamble Company Water-removing apparatus for papermaking process
US6280573B1 (en) * 1998-08-12 2001-08-28 Kimberly-Clark Worldwide, Inc. Leakage control system for treatment of moving webs

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1461103A1 (de) * 1963-03-18 1968-12-19 Huyck Corp Verfahren und Vorrichtung zur Beseitigung von Wasser von einer Papierbahn
DE4342608A1 (de) * 1993-12-14 1995-03-30 Voith Gmbh J M Vorrichtung und Verfahren zur Steigerung des Bahntrockengehaltes einer Papierbahn

Also Published As

Publication number Publication date
US6475343B1 (en) 2002-11-05
DE19951794A1 (de) 2001-05-03
EP1096064A3 (fr) 2002-01-23

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