EP1020559A2 - Dispositif pour secher et lisser des bandes fibreuses - Google Patents

Dispositif pour secher et lisser des bandes fibreuses Download PDF

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Publication number
EP1020559A2
EP1020559A2 EP99123079A EP99123079A EP1020559A2 EP 1020559 A2 EP1020559 A2 EP 1020559A2 EP 99123079 A EP99123079 A EP 99123079A EP 99123079 A EP99123079 A EP 99123079A EP 1020559 A2 EP1020559 A2 EP 1020559A2
Authority
EP
European Patent Office
Prior art keywords
fibrous web
moisture
influencing
drying
dryer section
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
EP99123079A
Other languages
German (de)
English (en)
Other versions
EP1020559A3 (fr
EP1020559B1 (fr
Inventor
Markus Oechsle
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
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Application filed by Voith Paper Patent GmbH, Voith Sulzer Papiertechnik Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1020559A2 publication Critical patent/EP1020559A2/fr
Publication of EP1020559A3 publication Critical patent/EP1020559A3/fr
Application granted granted Critical
Publication of EP1020559B1 publication Critical patent/EP1020559B1/fr
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
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/003—Indicating or regulating the moisture content of the layer
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/008—Steam showers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G7/00—Damping devices
    • 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
    • Y10S162/06—Moisture and basic weight
    • 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

Definitions

  • the invention relates to methods and associated devices for drying and Smoothing of a fibrous web, in particular a paper web in a machine for Production and / or refinement of the same, consisting of at least one Dryer section in which the fibrous web is guided over several heated cylinders and a calender with multiple smoothing nips.
  • SC papers for example, reach 97% - 98% dry content on End of the dryer section with a good moisture cross profile of 2 sigma of approx. 0.15% up to 0.3%. By moistening at the end of the dryer section, the Dry content reduced to 91% to 93%. After a "maturing period" of the paper roll in which there is also a compensation of the moisture content across the thickness of the paper, the paper is fed to a calender.
  • the moisture cross profile recorded at the end of the dryer section becomes the control the influencing device at the end of the dryer section and possibly also existing steam blow boxes in a press section upstream of the dryer section used. This is not only inaccurate, but also with long reaction times connected, which increases the reject rate.
  • the object of the invention is therefore methods and devices for drying and to further develop smoothing of fibrous webs in such a way that calendering the drying process especially at high speeds as well as at Ensuring the best possible moisture cross profile connected immediately can be.
  • the object was achieved in that the method Fibrous web in the dryer section at most up to a dry content of 93% dried and within the dryer section several times on the moisture cross profile of the Fibrous web is influenced and / or the moisture distribution over the thickness the fibrous web during the drying process in several places over the Moisten or dry at least one side of the fibrous web if possible is evenly trained.
  • the fibrous web, the dryer section and the Calenders at a speed of more than 1200 m / min, preferably more runs at 1500 m / min. It is particularly advantageous if the Fibrous web heated in the calender and in zones across the width of the fibrous web controllably pressed and steamed.
  • the intensity of humidification or drying should be at least in some places Influencing the moisture cross profile zone by zone across the width of the fibrous web be adjustable.
  • the setting of the zones should each be based on the subsequent measurement of the moisture cross profile.
  • the zone width should be as small as possible and less than 50 mm, preferably less than 25 mm.
  • the associated device is characterized in that on the one hand the Fiber web at least in one of the first two thirds and in the last third of the Dryer section and / or in the area between the dryer section and the calender at least one influencing device is assigned and / or on the other hand the Fibrous web at least in an area where it has a moisture content between 50% and 15%, preferably between 25% and 15% and at least in one Range where they have a moisture content between 20% and 8%, preferably owns between 15% and 8%, assigned at least one influencing device is.
  • at least two influencing devices are used.
  • the Influencing devices for humidification especially in the last third of the Drying section the water with the smallest possible droplet size in the range of less Spray less than 100 ⁇ m, preferably less than 80 ⁇ m, to the fibrous web.
  • the division of the fibrous web length should be between the last Influencing the moisture distribution via the thickness and / or the moisture cross profile especially about moistening and the first smoothing gap of the following Calenders divided by the speed of the fibrous web at least one Second. This minimal penetration time allows the penetration of the sprayed water into the fibrous web until the smoothing process begins.
  • the influencing devices are moisture cross-section measuring units assigned, which act on the control of the influencing devices.
  • each influencing device has a moisture cross-section measuring unit assigned, preferably be subordinate.
  • each moisture cross profile measuring unit one or two Influencing devices are assigned.
  • the moisture distribution over the thickness and width of the fibrous web can be advantageous be influenced by the fact that upstream in one of the dryer sections Press section for dewatering the same at least one across the fibrous web zone-controllable steam blower box for heating the fibrous web is located.
  • the calender consists of at least three smoothing rollers, which form a smoothing gap in pairs, at least one smoothing roller being heated and at least one smoothing roller is deflection-controlled. Also one Moistening in the calender can improve the result, heating and / or Humidification (usually with steam) should preferably be controllable in zones.
  • the fibrous web 1 passes together with at least a press felt 13 at least one press nip formed by two press rolls 14.
  • the press felt 13 receives the squeezed water and leads it from the Fibrous web 1 away.
  • the fibrous web 1 reaches the dryer section 2 there are several drying groups in which the fibrous web 1 together with a drying wire 12 alternately via heated cylinders 3 and preferably suctioned guide rollers 11 runs.
  • the underside of the fibrous web 1 touches the heated cylinder 3 and the dryer wire the guide rollers 11th
  • the fibrous web 1 After drying, the fibrous web 1 becomes a calender 4 Creation of gloss and smoothness resulted.
  • This calender 4 consists here, for example, of six arranged one above the other Smoothing rollers 10, which form five smoothing gaps 5 in pairs, two of which are adjacent Smoothing rollers 5 one is heated and the other is controlled by deflection.
  • a steam blow box 9 which is transverse to Fibrous web 1 can be controlled zone by zone and influences the moisture cross profile.
  • a moisture cross-section measuring unit 7 is arranged at the beginning of the drying section 2, which acts on the steam blower box 9. Furthermore there are at the beginning of the Dryer section 2 assigned to the heated underside of the fibrous web 1 Influencing device 6 and two at the end of the dryer section 2 arranged on different sides of the fibrous web 1, further Influencing devices 6 for moistening. All influencing devices 6 can be controlled zone by zone, the zone width is 25 - 30 mm and the sprayed water drops are smaller than 100 ⁇ m, and from subordinate ones Moisture cross profile measuring units 7 influenced.
  • the moisture cross profile measuring unit 7 of the first influencing device 6 before the last two Influencing devices 6 is arranged, the last two Influencing devices 6 of the dryer section 2 a common, between Drying section 2 and calender 4 existing moisture cross-section measuring unit 7.
  • the possibility is presented that the moisture cross profile and thus Gloss and smoothness in the calender 4 by means of a further influencing device 6 and a subsequent moisture cross-profile measuring unit 7 is influenced. After the calender, the fibrous web is wound up and processed.
  • both sides of the fibrous web 1 at least in the end region of the Dryer section 2 come into contact with heated cylinders 3.
  • the example shown enables speeds of more than 1500 m / min, the influencing devices 6 within the dryer section 2 in one area between 40% and 20% moisture content at the beginning of dryer section 2 and in one Range between 15% and 10% at the end of the dryer section 2 are arranged. In principle, of course, there are also more influencing devices 6 within the Dryer section 2 can be used.
  • the length of the fibrous web is between the last one Influencing device 6 for moistening and the first smoothing gap 5 for example 30 m, which is sufficient water penetration into the Fibrous web 1 allowed until smoothing.
  • the dry matter content is a maximum of 93% or 91% sufficient, which leads to large energy savings or Drying section 2 shortened.
  • the measurement of the moisture cross profile can be done, for example, in a known manner Infrared technology.

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  • Paper (AREA)
EP99123079A 1999-01-15 1999-11-22 Dispositif pour secher et lisser des bandes fibreuses Expired - Lifetime EP1020559B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19901400 1999-01-15
DE19901400A DE19901400A1 (de) 1999-01-15 1999-01-15 Trocknungs- und Glättungseinheit für Faserstoffbahnen

Publications (3)

Publication Number Publication Date
EP1020559A2 true EP1020559A2 (fr) 2000-07-19
EP1020559A3 EP1020559A3 (fr) 2001-01-17
EP1020559B1 EP1020559B1 (fr) 2005-04-13

Family

ID=7894378

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99123079A Expired - Lifetime EP1020559B1 (fr) 1999-01-15 1999-11-22 Dispositif pour secher et lisser des bandes fibreuses

Country Status (3)

Country Link
US (1) US6490813B1 (fr)
EP (1) EP1020559B1 (fr)
DE (3) DE29924829U1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10018945A1 (de) * 1999-07-24 2001-01-25 Voith Paper Patent Gmbh Papiermaschine
WO2002042555A1 (fr) * 2000-11-24 2002-05-30 Metso Paper, Inc. Procede et dispositif permettant de commander le profil d'humidite et le profil de la quantite de revetement d'une bande de papier
ES2220188A1 (es) * 2001-08-10 2004-12-01 Raute Oyj Metodo y equipo para la produccion de una chapa de madera uniformemente humedecida.
DE10325572A1 (de) * 2003-06-05 2004-12-23 Voith Paper Patent Gmbh Vorrichtung und Verfahren zur Herstellung und/oder Behandlung einer Faserstoffbahn
CN110998022A (zh) * 2017-08-10 2020-04-10 福伊特专利有限公司 用于生产纤维料幅的机器和方法

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU5042699A (en) * 1998-07-10 2000-02-01 Valmet Corporation Method and apparatus for manufacturing calendered paper
FI112102B (fi) 1999-03-04 2003-10-31 Metso Paper Inc Menetelmä konesuuntaisen ratakosteuden säätämiseksi päällystyskoneella
FI110706B (fi) * 1999-03-04 2003-03-14 Metso Paper Inc Menetelmä konesuuntaisen ratakosteuden säätämiseksi päällystyskoneella ja kalanterilla
US6749723B2 (en) * 2000-06-28 2004-06-15 Metso Paper Karlstad Ab Measuring arrangements in a shortened dry end of a tissue machine
FI121081B (fi) * 2002-01-08 2010-06-30 Metso Paper Automation Oy Menetelmä ja laitteisto paperikoneen tai paperirainan jälkikäsittelylaitteen yhteydessä
JP3772756B2 (ja) * 2002-02-13 2006-05-10 セイコーエプソン株式会社 不揮発性半導体記憶装置
DE10233795A1 (de) * 2002-07-25 2004-02-12 Voith Paper Patent Gmbh Trockenpartie
US9481777B2 (en) 2012-03-30 2016-11-01 The Procter & Gamble Company Method of dewatering in a continuous high internal phase emulsion foam forming process
EP2963176B1 (fr) * 2015-04-23 2017-03-15 Valmet S.p.A. Agencement de hotte de séchage yankee, cylindre de séchage yankee équipé d'un agencement de hotte de séchage yankee et procédé de séchage d'une bande fibreuse
DE202022104495U1 (de) * 2022-07-05 2022-09-01 Voith Patent Gmbh Maschine

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3622448A (en) * 1968-02-16 1971-11-23 Industrial Nucleonics Corp System and method of process control, particularly papermaking processes in response to fraction defective measurements
US3658642A (en) * 1968-12-18 1972-04-25 Beloit Corp Method of reducing curl in making a continuous web of paper
CA961325A (en) * 1972-05-05 1975-01-21 Midland-Ross Corporation Device for adding a liquid component to a web
US3948721A (en) * 1974-09-03 1976-04-06 Winheim Karl H Method and apparatus for wetting the web in paper making machines
US4378639A (en) 1978-12-21 1983-04-05 Midland-Ross Corporation Method and apparatus for uniformly drying a continuous web of cellulosic fibers
SE7910025L (sv) * 1978-12-21 1980-06-22 Midland Ross Corp Sett och anordning att likformigt torka en av cellulosafibrer bestaende kontinuerlig materialbana
DE4301023C3 (de) * 1993-01-16 2001-07-26 V I B Systems Gmbh Vorrichtung zum Erhöhen von Glanz und/oder Glätte einer Papierbahn
DE9414963U1 (de) 1994-09-16 1994-11-03 J.M. Voith Gmbh, 89522 Heidenheim Trockenpartie
US5771603A (en) 1994-09-16 1998-06-30 Voith Sulzer Papiermashinen Gmbh Dryer section
US5592751A (en) * 1994-11-23 1997-01-14 Voith Sulzer Papiermaschinen Gmbh Dryer section having combination of single and double tier dryer groups
DE29521501U1 (de) * 1995-12-22 1997-05-28 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Trockenpartie
ATE287987T1 (de) 1997-11-14 2005-02-15 Metso Paper Inc Verfahren zur herstellung vom kalandrierten papier

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10018945A1 (de) * 1999-07-24 2001-01-25 Voith Paper Patent Gmbh Papiermaschine
WO2002042555A1 (fr) * 2000-11-24 2002-05-30 Metso Paper, Inc. Procede et dispositif permettant de commander le profil d'humidite et le profil de la quantite de revetement d'une bande de papier
US7249424B2 (en) 2000-11-24 2007-07-31 Metso Paper, Inc. Method and device for controlling the moisture or coating quantity profile in a paper web
ES2220188A1 (es) * 2001-08-10 2004-12-01 Raute Oyj Metodo y equipo para la produccion de una chapa de madera uniformemente humedecida.
DE10325572A1 (de) * 2003-06-05 2004-12-23 Voith Paper Patent Gmbh Vorrichtung und Verfahren zur Herstellung und/oder Behandlung einer Faserstoffbahn
CN110998022A (zh) * 2017-08-10 2020-04-10 福伊特专利有限公司 用于生产纤维料幅的机器和方法

Also Published As

Publication number Publication date
DE59911903D1 (de) 2005-05-19
DE19901400A1 (de) 2000-07-20
DE29924829U1 (de) 2005-12-08
EP1020559A3 (fr) 2001-01-17
EP1020559B1 (fr) 2005-04-13
US6490813B1 (en) 2002-12-10

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