EP1054102A2 - Procédé et appareil pour la commande ou la régulation du poids de base d'une bande de papier ou carton - Google Patents

Procédé et appareil pour la commande ou la régulation du poids de base d'une bande de papier ou carton Download PDF

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Publication number
EP1054102A2
EP1054102A2 EP00107662A EP00107662A EP1054102A2 EP 1054102 A2 EP1054102 A2 EP 1054102A2 EP 00107662 A EP00107662 A EP 00107662A EP 00107662 A EP00107662 A EP 00107662A EP 1054102 A2 EP1054102 A2 EP 1054102A2
Authority
EP
European Patent Office
Prior art keywords
basis weight
retention
concentration
white water
control loop
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
EP00107662A
Other languages
German (de)
English (en)
Other versions
EP1054102A3 (fr
Inventor
Wolfgang Griech
Dirk Thomas
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
Voith Sulzer Papiertechnik 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, Voith Sulzer Papiertechnik Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1054102A2 publication Critical patent/EP1054102A2/fr
Publication of EP1054102A3 publication Critical patent/EP1054102A3/fr
Ceased legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0009—Paper-making control systems
    • D21G9/0027—Paper-making control systems controlling the forming section
    • 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
    • D21F1/08—Regulating consistency
    • 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
    • D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
    • 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
    • Y10S162/09—Uses for paper making sludge
    • Y10S162/10—Computer control of paper making variables
    • Y10S162/11—Wet end paper making variables

Definitions

  • the invention relates to an apparatus and a method to control or regulate the basis weight of a Paper or cardboard web in the manufacturing process according to the Preamble of claim 1, or according to the Preamble of the first procedural claim.
  • An essential quality factor of a paper or Cardboard web lies in the uniformity of the basis weight the manufactured web.
  • Numerous disruptive factors occur which affect the Uniformity of the basis weight over the machine width seen away and also in the machine direction, unfavorable can influence.
  • These disruptive factors include for example temperature fluctuations, pressure fluctuations and Manufacturing tolerances but also errors in execution or Setting the paper machine in the manufacturing process.
  • Around these negative confounding factors as successfully as possible turn off and to produce a uniform To get paper web, devices and procedures to control and regulate the basis weight in cross and Longitudinal direction of the web used.
  • the published patent application DB 20 19 975 shows how with With the help of two sensors for measuring the basis weight a running path from a measured inclined profile and a longitudinal profile the actual basis weight cross profile and the actual basis weight longitudinal profile can be extracted and used for control, respectively Regulation of the basis weight, a web can be used can.
  • the width is known the outlet gap of a headbox at certain Adjust the web width so that the Throughput of the stock suspension accordingly locally changed. If the throughput of the stock suspension with locally over the machine width of the same concentration changed, this affects the amount the fixed stop at this point of the web in relation to the Web width and thus a change in the basis weight this point or this lane.
  • Patent application DE 40 19 593 A1 discloses one Device and a method for regulating the Basis weight cross-section of a paper web. According to this If the basis weight cross-section deviates, the writing should the paper web at a certain point of the Web width, the concentration of the stock suspension stream be changed at this point. To achieve this suggested the headbox at least partially through the Section width and with the help of regulated Section streams with individually adjustable concentration to load. The individual attitude of Concentration of the respective section stream takes place through a regulation of the inflow conditions of two individual flows with constant but different concentrations. Due to the different content of the section streams there is a change in the basis weight of solids at the corresponding point of the web width.
  • this is Basis weight cross-section of the paper web at the end of the Paper machine measured and the aperture with a control loop at the headbox or the inflow conditions of the Individual streams of different concentrations for the respective sections regulated.
  • the object of the invention is achieved by the features the first device claim and the first Process claim resolved.
  • the at least one means for Influencing the basis weight as a multitude of adjustable means, distributed over the machine width are arranged, be formed.
  • Example corresponds to this is a paper machine with one dilution-controlled headbox, which over the Machine width distributes mixers or valves which has sectionally the substance suspension concentration due to different mixing ratios of white water and regulate thick matter.
  • the at least one adjustable means to influence the basis weight is provided as an actuator for the second control loop.
  • the at least one sensor for the concentration of the white water in front of or in a white water tank or in a Line for white water supply to the headbox arranged his becomes all the shorter, the closer the measurement is to the extraction of the white water, that is on the wet end.
  • an intermediate buffer such as a white water tank
  • the sensor for measuring the basis weight and if necessary, the moisture can on the one hand at the end of the Dryer section or between press section and dryer section, preferably at the end of the press section. If the sensor is positioned at the end of the press section, so the controlled system shortens compared to a measurement on End of dryer section by around 90%. Errors continue and faults are detected much faster and are thus to eliminate or influence much faster, which significantly reduces unproductive operating times have it shortened.
  • the inventor suggests that known methods for controlling or regulating the Basis weight of a paper or cardboard web in Manufacturing process with a first control loop that the Basis weight of the web with the help of at least one Basis weight measurement and at least one means for Influencing the basis weight, to that effect to further develop that in a further control loop the detection of a change in retention of the Retention change by influencing the concentration of the placed on the sieve or between the sieves introduced material suspension is counteracted.
  • the measurement in the white water perform. This can be done by taking a measurement retention to the concentration of the solids determine. For example, this can be done by maintaining the retention directly by comparing the amount of solids applied by the headbox and the the amount of solids removed again via the wet section is determined. Another option is to use the Change in the concentration of solids in the Determine white water and from this towards retention conclude.
  • an advantageous measuring point for the detection of a Retention change can be a place before White water tank or also in the headbox to get voted.
  • the further control loop is proposed to the first Subordinate control loop. Furthermore, the other Control loop also the actuators of the first control loop use.
  • Another advantageous way to act on that Basis weight consists in the detection of a Retention decrease a retention agent, if necessary amplified, feed, or in a detection an increase in retention increases the supply of retention agent Reduce.
  • DE 197 36 047 shows and describes a paper machine with a first and a second control loop for Basis weight control, the second control loop as Measured variable the mass per unit area of the resulting web before the Dryer section uses to fluctuate the basis weight of the Compensate the web in the machine direction before the web passes through the entire paper machine until it is wound up.
  • DE 197 36 048 shows and describes how one sectioned and regulated with dilution water Headbox using a second control loop Self-blocking of the regulation of the mass cross profile prevented can be.
  • FIG. 1 shows a schematic representation of a Paper machine with two superimposed control loops I and II.
  • the headbox 1 is shown in the paper machine, which stock suspension gives up on the wire section 2, which from a rotating sieve 3 and a dewatering unit 4 exists.
  • the fiber web 5 is not formed shown press sections and dryer sections forwarded and then as a finished paper web 5 ' wound on a roll 9.
  • a measuring frame 8 is provided in which there is a basis weight sensor 7 that Basis weight of the finished paper web 5 'is detected and feeds the control loop I via the measuring line 19.
  • the Control loop I controls a first control line 24 and a second control line 22 a first actuator 11 and a second actuator 12.
  • the first actuator 11 is in the first supply line 15 arranged to the headbox 1 and affects the to Headbox 1 supplied white water amount of Sieve cycle.
  • the second actuator 12 affects the Headbox 1 fed amount of more concentrated Stock suspension.
  • Control loop I By adjusting the two actuators 11 and 12 through the control loop I based on the measured Basis weight over the basis weight sensor 7 can Control loop I the concentration of the total supplied Influence stock suspension on headbox 1 and on this way the basis weight of the finished paper web 5 'in keep constant as desired.
  • the actuators 11 and 12 from a variety of across the machine width distributed actuators, which do not exist in this way only the total basis weight of the paper web produced but also the basis weight cross section of the paper web regulate. Under these circumstances, is usually a Basis weight sensor used across the entire width the paper web produced moves and in this way a basis weight cross section of the paper web produced measures and accordingly influences the individual actuators.
  • control loop I Because the controlled system for this is shown and in itself known control loop I is very long, is according to the invention a second control loop II is subordinate to this control loop I, which has a much shorter response time.
  • the shortened reaction time is brought about by the fact that the subordinate control circuit II a sensor 10 for measuring the Concentration of the white water in the wire section having. This sensor is in front of the Inlet of the white water into the white water tank 6 arranged. One leads from the concentration sensor 10 Measuring line 20 to the second control circuit II, which at a sudden change in concentration of the White water intervenes. Control loop II also acts the two actuators 11 and 12 with its control lines 23 and 24, which in this case are identical to the Control lines 22 and 21 of the control circuit I are.
  • FIG 2 shows a schematically shown Paper machine according to Figure 1 with a first Control loop I and a second, subordinate control loop II.
  • the first control loop I corresponds to the known situation of the control loop I from Figure 1, the basis weight the paper web produced on the setting of Actuators 11 and 12 in the supply lines to Headbox controls.
  • Subordinate control loop II has two Concentration sensors.
  • the first concentration sensor 10 measures the concentration of white water while the second Concentration sensor 25 the concentration of the by Headbox 1 fed stock suspension measures. From the Ratio of the two concentration values (Stock suspension concentration / white water concentration) the retention can be determined in a simple manner, so that in the event of a sudden decrease in retention via the Actuator 13 - which is the amount of the higher concentrated Stock suspension that is fed to headbox 1 influenced - and via the actuator 11 - which the amount the white water supply is affected - be counteracted can.
  • FIGS. 1 and 2 Another possible design of the control loops is shown in Figure 3.
  • the paper machine corresponds to their structure is shown in FIGS. 1 and 2. It is a control circuit I provided that due to the basis weight measurement of the manufacture the paper web at the end of the paper machine Concentration of the feed suspension at Headbox 1 influenced by the control lines 21st and 22 actuators 11 and 12 in the first and second Supply lines 15 and 16 to the headbox are regulated.
  • the underlying control loop according to the invention II provided that the concentration of the white water over a concentration sensor 10 behind the outlet of the White water tank 6 measures and based on the measured Concentration also controls 11 and 12 can influence.
  • FIG. 4 shows the paper machine from Figures 1 to 3, the headbox over a first supply line 15 with white water and a second Supply line 16 with a higher concentration of stock suspension in a controlled mixture ratio is fed.
  • the more concentrated stock suspension over the second Supply line 16 is supplied to the headbox via an additional feed of thick matter, which via the control loop I is regulated.
  • the control loop thus regulates I the concentration of the stock suspension over the second Feed line 16 is fed to the headbox.
  • a first and second actuator 11 and 12 Located in the first and second supply lines 15 and 16 a first and second actuator 11 and 12. Both Actuators, here as speed-controlled feed pumps are trained by the second, subordinate Control loop II controlled via the control lines 21 and 22.
  • the control circuit II has as in Figures 1 and 2 a concentration sensor 10 which measures the concentration of the White water measures before it enters the white water tank 6 reached. According to the measured Changes in concentration in the white water can be due to a Retention deviation closed and via control loop II in a short "loop" influence on the input Material suspension concentration taken to the headbox become.

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  • Paper (AREA)
EP00107662A 1999-05-19 2000-04-10 Procédé et appareil pour la commande ou la régulation du poids de base d'une bande de papier ou carton Ceased EP1054102A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19922817A DE19922817A1 (de) 1999-05-19 1999-05-19 Vorrichtung und Verfahren zur Steuerung oder Regelung des Flächengewichts einer Papier- oder Kartonbahn
DE19922817 1999-05-19

Publications (2)

Publication Number Publication Date
EP1054102A2 true EP1054102A2 (fr) 2000-11-22
EP1054102A3 EP1054102A3 (fr) 2001-05-02

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EP00107662A Ceased EP1054102A3 (fr) 1999-05-19 2000-04-10 Procédé et appareil pour la commande ou la régulation du poids de base d'une bande de papier ou carton

Country Status (3)

Country Link
US (2) US6521089B1 (fr)
EP (1) EP1054102A3 (fr)
DE (1) DE19922817A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1249532A2 (fr) * 2001-04-12 2002-10-16 Voith Paper Patent GmbH Procédé et installation pour contrôle de la formation
WO2003040465A1 (fr) * 2001-11-09 2003-05-15 Metso Automation Oy Procede et appareil pour ajuster le fonctionnement d'une partie toile
US7396437B2 (en) * 2002-03-01 2008-07-08 Voith Paper Patent Gmbh Method and system for controlling the web formation
DE102010043943A1 (de) 2010-11-15 2012-05-16 Voith Patent Gmbh Verfahren und Vorrichtung zur Regelung von Materialeigenschaften

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19922817A1 (de) * 1999-05-19 2000-11-23 Voith Sulzer Papiertech Patent Vorrichtung und Verfahren zur Steuerung oder Regelung des Flächengewichts einer Papier- oder Kartonbahn
SE518577C2 (sv) * 2000-12-08 2002-10-29 Real Sverige Ab M Förfarande för framställning av papper med konstant fyllmedelsinnehåll
FI115539B (fi) * 2001-02-23 2005-05-31 Metso Automation Oy Menetelmä ja järjestelmä paperikoneen tai vastaavan lyhyen kierron säädössä
US20030000669A1 (en) * 2001-05-11 2003-01-02 Invensys Systems, Inc. Methods and systems for controlling paper quality by adjusting fiber filter parameters
FI115081B (fi) * 2001-10-19 2005-02-28 Metso Automation Oy Menetelmä ja laitteisto paperikoneen massaosaston toiminnan ohjaamiseksi
FI115412B (fi) * 2002-04-16 2005-04-29 Metso Automation Oy Menetelmä ja laitteisto paperirainalla olevan päällysteen määrän mittaamiseksi
US6950777B1 (en) 2003-07-29 2005-09-27 Voith Paper Inc. Method and system for assessing pulp and paper mill performance
DE102005051656A1 (de) * 2005-10-28 2007-05-03 Voith Patent Gmbh Verfahren und Vorrichtung zur Herstellung einer Faserstoffbahn
US20090044420A1 (en) * 2007-08-16 2009-02-19 Hokwang Industries Co., Ltd. Light directing hand dryer
US8968517B2 (en) 2012-08-03 2015-03-03 First Quality Tissue, Llc Soft through air dried tissue
EP3142625A4 (fr) 2014-05-16 2017-12-20 First Quality Tissue, LLC Lingette jetable dans les toilettes et son procédé de fabrication
US9988763B2 (en) 2014-11-12 2018-06-05 First Quality Tissue, Llc Cannabis fiber, absorbent cellulosic structures containing cannabis fiber and methods of making the same
WO2016086019A1 (fr) 2014-11-24 2016-06-02 First Quality Tissue, Llc Mouchoir en papier doux fabriqué à l'aide d'un tissu structuré et par compression à rendement énergétique élevé
CA2967986C (fr) 2014-12-05 2023-09-19 Structured I, Llc Procede de fabrication de courroies pour la fabrication du papier utilisant une technologie d'impression 3d
US10538882B2 (en) 2015-10-13 2020-01-21 Structured I, Llc Disposable towel produced with large volume surface depressions
WO2017066465A1 (fr) 2015-10-13 2017-04-20 First Quality Tissue, Llc Serviette jetable à cavités de surface de grand volume
CN109328166A (zh) 2015-10-14 2019-02-12 上品纸制品有限责任公司 捆束产品及形成捆束产品的系统和方法
WO2017139786A1 (fr) 2016-02-11 2017-08-17 Structured I, Llc Courroie ou tissu comprenant une couche polymère pour machine à papier
US20170314206A1 (en) 2016-04-27 2017-11-02 First Quality Tissue, Llc Soft, low lint, through air dried tissue and method of forming the same
MX2019002123A (es) 2016-08-26 2019-08-16 Metodo para producir estructuras absorbentes con alta resistencia a la humedad, absorbencia, y suavidad.
CA3036821A1 (fr) 2016-09-12 2018-03-15 Structured I, Llc Dispositif de formation d'un actif depose par voie humide utilisant un tissu structure en tant que fil externe
US11583489B2 (en) 2016-11-18 2023-02-21 First Quality Tissue, Llc Flushable wipe and method of forming the same
US10619309B2 (en) 2017-08-23 2020-04-14 Structured I, Llc Tissue product made using laser engraved structuring belt
DE102018114748A1 (de) 2018-06-20 2019-12-24 Voith Patent Gmbh Laminierte Papiermaschinenbespannung
US11697538B2 (en) 2018-06-21 2023-07-11 First Quality Tissue, Llc Bundled product and system and method for forming the same
US11738927B2 (en) 2018-06-21 2023-08-29 First Quality Tissue, Llc Bundled product and system and method for forming the same
WO2020045151A1 (fr) * 2018-08-28 2020-03-05 サカタインクス株式会社 Composition d'encre pour durcissement par plasma et additif pour compositions d'encre pour durcissement par plasma
CN110221633A (zh) * 2019-06-14 2019-09-10 浙江华章科技有限公司 一种基于arm的纸浆浓度调节系统

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19736048A1 (de) * 1997-08-20 1999-02-25 Voith Sulzer Papiermasch Gmbh Vorrichtung und Verfahren zur Steuerung oder Regelung eines Bahneigenschaftsprofils
DE19736047A1 (de) * 1997-08-20 1999-02-25 Voith Sulzer Papiermasch Gmbh Vorrichtung und Verfahren zur Steuerung oder Regelung des Flächengewichts einer Papier- oder Kartonbahn

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3619360A (en) * 1968-12-17 1971-11-09 Beloit Corp Basis weight control system for a papermaking machine
US3981767A (en) * 1969-12-29 1976-09-21 Westvaco Corporation Apparatus and method for controlling the stock flow to a paper machine headbox
US4098641A (en) * 1973-04-02 1978-07-04 Measurex Corporation Method for the on-line control of the opacity of a paper sheet
FR2429867A1 (fr) * 1978-06-30 1980-01-25 Centre Tech Ind Papier Commande du fonctionnement de la caisse de tete d'une machine a papier
US5707495A (en) * 1990-06-20 1998-01-13 J.M. Voith Gmbh Headbox for papermaking machine with more uniform flow
DE4237309A1 (fr) * 1992-11-05 1993-04-08 Voith Gmbh J M
FI100894B (fi) * 1993-07-01 1998-03-13 Valmet Paper Machinery Inc Menetelmä ja laite perälaatikon säädössä
DE4409415C5 (de) * 1994-03-18 2005-02-17 Voith Sulzer Papiermaschinen Gmbh Dosiervorrichtung für einen Stoffauflauf einer Papiermaschine
DE4437181C2 (de) * 1994-10-18 1997-02-27 Voith Sulzer Papiermasch Gmbh Stoffauflauf für eine Papiermaschine
DE19509522C2 (de) * 1995-03-20 1999-03-11 Voith Sulzer Papiermasch Gmbh Naßpartie einer Papiermaschine
US5560807A (en) * 1995-03-29 1996-10-01 Beloit Technologies, Inc. Headbox additive injection system
US5825653A (en) * 1997-03-14 1998-10-20 Valmet Corporation Method for overall regulation of a former of a paper machine or equivalent
FI98938C (fi) * 1996-06-20 1997-09-10 Valmet Corp Laitteisto laimennusvirtauksen yhdistämiseksi paperikoneen/kartonkikoneen jakotukista johdettuun massavirtaukseen
FI110704B (fi) * 1996-10-18 2003-03-14 Metso Paper Inc Monikerrosperälaatikon massansyöttöjärjestelmä ja menetelmä monikerrosperälaatikkokäytössä
US5891306A (en) * 1996-12-13 1999-04-06 Measurex Corporation Electromagnetic field perturbation sensor and methods for measuring water content in sheetmaking systems
US5928475A (en) * 1996-12-13 1999-07-27 Honeywell-Measurex, Corporation High resolution system and method for measurement of traveling web
FI115645B (fi) * 1997-01-14 2005-06-15 Metso Paper Inc Paperikoneen perälaatikko, jossa on reunasyöttöjärjestelyt
US6284100B1 (en) * 1997-01-24 2001-09-04 Valmet Corporation Method and apparatus for controlling a headbox in a paper machine
US5944957A (en) * 1997-03-14 1999-08-31 Valmet Corporation Regulations system in a paper machine for controlling variation of the basis weight of the paper in the machine direction
FI974328A (fi) * 1997-11-25 1999-05-26 Valmet Automation Inc Menetelmä ja laitteisto paperin ominaisuuksien säätämiseksi
US6006602A (en) * 1998-04-30 1999-12-28 Honeywell-Measurex Corporation Weight measurement and measurement standardization sensor
US6086716A (en) * 1998-05-11 2000-07-11 Honeywell-Measurex Corporation Wet end control for papermaking machine
DE19922817A1 (de) * 1999-05-19 2000-11-23 Voith Sulzer Papiertech Patent Vorrichtung und Verfahren zur Steuerung oder Regelung des Flächengewichts einer Papier- oder Kartonbahn

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19736048A1 (de) * 1997-08-20 1999-02-25 Voith Sulzer Papiermasch Gmbh Vorrichtung und Verfahren zur Steuerung oder Regelung eines Bahneigenschaftsprofils
DE19736047A1 (de) * 1997-08-20 1999-02-25 Voith Sulzer Papiermasch Gmbh Vorrichtung und Verfahren zur Steuerung oder Regelung des Flächengewichts einer Papier- oder Kartonbahn

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HUOVILA, J., KAUNONEN, A.: "Produktivit{t durch steuerbare Gleichm{ssigkeit" WOCHENBLATT F]R PAPIERFABRIKATION, Bd. 126, Nr. 21, November 1998 (1998-11), Seiten 1103-1109, XP000989607 *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1249532A2 (fr) * 2001-04-12 2002-10-16 Voith Paper Patent GmbH Procédé et installation pour contrôle de la formation
EP1249532A3 (fr) * 2001-04-12 2004-01-02 Voith Paper Patent GmbH Procédé et installation pour contrôle de la formation
US6805772B2 (en) 2001-04-12 2004-10-19 Voith Paper Patent Gmbh Method and apparatus for manufacturing a fibrous material web
WO2003040465A1 (fr) * 2001-11-09 2003-05-15 Metso Automation Oy Procede et appareil pour ajuster le fonctionnement d'une partie toile
CN1295395C (zh) * 2001-11-09 2007-01-17 麦特自动有限公司 用于调节网部操作的方法和设备
US7279072B2 (en) 2001-11-09 2007-10-09 Metso Automation Oy Method and apparatus for adjusting operation of wire section
US7396437B2 (en) * 2002-03-01 2008-07-08 Voith Paper Patent Gmbh Method and system for controlling the web formation
DE102010043943A1 (de) 2010-11-15 2012-05-16 Voith Patent Gmbh Verfahren und Vorrichtung zur Regelung von Materialeigenschaften
WO2012065826A1 (fr) 2010-11-15 2012-05-24 Voith Patent Gmbh Procédé et dispositif de régulation de propriétés de matériau

Also Published As

Publication number Publication date
DE19922817A1 (de) 2000-11-23
US6521089B1 (en) 2003-02-18
US20030089479A1 (en) 2003-05-15
EP1054102A3 (fr) 2001-05-02

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