EP1314819A2 - Calandre et procédé pour le lissage de bandes de papier ou carton - Google Patents

Calandre et procédé pour le lissage de bandes de papier ou carton Download PDF

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Publication number
EP1314819A2
EP1314819A2 EP02024341A EP02024341A EP1314819A2 EP 1314819 A2 EP1314819 A2 EP 1314819A2 EP 02024341 A EP02024341 A EP 02024341A EP 02024341 A EP02024341 A EP 02024341A EP 1314819 A2 EP1314819 A2 EP 1314819A2
Authority
EP
European Patent Office
Prior art keywords
nip
jacket
roller
web
belt
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
EP02024341A
Other languages
German (de)
English (en)
Other versions
EP1314819B1 (fr
EP1314819A3 (fr
Inventor
Rüdiger Dr. Kurtz
Josef Schneid
Thomas Hermsen
Udo Gabbusch
Harald Hess
Rainer Fenske
Alexander Wassermann
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
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Application filed by Voith Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1314819A2 publication Critical patent/EP1314819A2/fr
Publication of EP1314819A3 publication Critical patent/EP1314819A3/fr
Application granted granted Critical
Publication of EP1314819B1 publication Critical patent/EP1314819B1/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
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/006—Calenders; Smoothing apparatus with extended nips
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/02—Rolls; Their bearings
    • D21G1/0253—Heating or cooling the rolls; Regulating the temperature

Definitions

  • the invention relates to a calender for smoothing a Paper or cardboard web with a nip between one heated roller and a circumferential jacket formed is under the action of a support shoe over a predetermined circumferential area to the roller is pressed.
  • the invention further relates to a method for smoothing a paper or cardboard web, at which is passed through a nip between a heated roller and a circumferential jacket is with the help of a support shoe against the Roller is pressed.
  • the invention has for its object the web better to smooth out
  • This task is performed on a calender of the type mentioned at the beginning Art solved in that an additional heated Tape is passed through the nip and a treatment line formed between the belt and the roller is.
  • the revolving like a roller Coat which can also be called the coat of a shoe roller can heat.
  • the coat can be different Be trained types. A possibility is the use of a relatively rigid sheath that is elastic enough to conform to the curvature of the roller to adapt, but otherwise practically like a Roller rotates. This coat can be used on the front Be provided with washers. Another option is Use a less stiff tape that over Support rollers is guided in one revolution, the deflection rollers practically define a polygon. Such a thing Band can also be relatively thin.
  • the coat that must be flexible enough to attach to the roller Being convex usually consists of one Plastic material that has poor thermal conductivity and in the event of thermal exposure, such as they are required for heating through the jacket has a limited lifespan.
  • This problem can be solved by using the tape bypass. You only heat the belt, so that the Web heated by both the roller and the belt can be, but the coat only by contact with the heated band is heated. It also has this Design the advantage that the jacket of the shoe roller does not come into contact with the train and less Wear is claimed.
  • the surface of the coat practically does not play for smoothing the path Role. Rather, the decisive factor is the surface of the Band facing the web. With “smoothing" is here meant a treatment that is also called “satin" can be designated.
  • the tape be a metal tape is trained. At least the area of the metal band, the one facing the web can then be particularly smooth be made so that the smoothness of the metal strip embossed into the surface of the web. One can therefore in a nip the web on both sides with approximately the same Smooth surface properties.
  • a band heater is preferably in front of the nip arranged.
  • the band is therefore immediately before entry heated in the nip and gives the absorbed heat then in the nip to the train. This will result in energy losses kept small and a heating up of the environment is largely avoided.
  • a cooling device is preferably provided acts on the coat. Because the tape is heated before it enters the nip is a heat transfer on the coat practically inevitable. To one thermal overstressing of the jacket in the Rule is formed from a plastic to avoid is the amount of heat entered in the jacket by the cooling device removed again, so that the The temperature of the jacket even during long periods of operation can hold in areas for which the material of the Jacket is designed.
  • the cooling device is arranged behind the exit of the nips.
  • the jacket In the nip the jacket is first heated on its surface. If you already cool the coat at the exit of the nip, then you can usually go from a relatively high one Go out temperature at the surface. There is cooling the greater the temperature difference, the more effective is.
  • the coat has the largest Part of its orbit a temperature that is opposite the Temperature in the nip is reduced. This also extended the lifespan.
  • the belt is in greater circulation than the coat led. So outside of the nip arises a distance between the band and the jacket so that the mutual influence between band and coat, for example thermal, outside the nip can be kept small. You can therefore use the coat cool and keep the tape at an elevated temperature, without having any negative effects.
  • the tape preferably has a smoother surface than the coat on. This lowers the requirements the coat, but at the same time it allows the train on its side facing the jacket with a desired one to provide high smoothness.
  • the tape has at least two Has layers, one of which is adjacent to the jacket Thermal insulation layer and one adjacent to the web Layer is thermally conductive. In this case, the additional thermal exposure is combined the web with the protection of the coat. The The coat is warmed up less.
  • the task is in a method of the aforementioned Kind of solved by having a heated band between the web and the jacket through the nip.
  • a touch between the jacket and the web is avoided, so that the jacket is less stressed for wear. you can the smoothing result regardless of the surface properties of the coat.
  • a device 1 for smoothing a fibrous web, a paper or cardboard web 2 (hereinafter: web called) has a roller 3, which with the help of a heater 4 shown schematically heated is.
  • a heater 4 shown schematically heated is.
  • the roller 3 works together with a jacket 5 one Shoe roller 6 against with the help of a support element 7 the roller 3 is pressed.
  • a support element 7 which guide the jacket 5.
  • the support element 7, which can also be called a support shoe, has a convex pressure surface 10, the curvature is adapted to the curvature of the roller 3.
  • the coat 5 is therefore over a predetermined circumferential section pressed the surface of the roller 3.
  • the length of this The peripheral portion is in the range of about 70 to about 250 mm.
  • a hydraulic lubrication may be provided, d. H. it will creates an oil film that creates the friction between the mantle 5 and the support element 7 is reduced.
  • a nip 11 is formed, which can also be referred to as a wide nip.
  • the web 2 passes through the nip 11 in the direction of an arrow 12 and is subjected to pressure and an elevated temperature in the nip 11, the elevated temperature acting on a first side 13 of the web originating from the heated roller 3.
  • the dwell time in the Breitnip 11 is in the range from 1.5 to 15 ms. Compression stresses in the wide nip range from 1 to 10 N / mm 2 .
  • the band 15 is a metal band, preferably a steel band, whose surface is smoother than the surface of the jacket 5.
  • the surface quality of the belt 15 corresponds the surface quality of the roller 3.
  • volume 15 thus runs into the nip 11 at an elevated temperature on.
  • the temperature of the belt 15 can be the same be as high as the temperature of the roller 3 in the nip 11.
  • the belt 15 is guided over several deflection rollers 17-22, which are arranged so that the circulation of the tape 15 is greater than the circulation of the jacket 5 of the Shoe roll. This results outside the nip 11 a distance between the band 15 and the jacket 5.
  • a cooling device 23 is arranged at the outlet of the nip 11, which acts on the coat 5 and the coat 5 Extracts heat that it has absorbed in nip 11. This Most of the heat comes from tape 15. With help the cooling device 23, which from the outside onto the jacket 5 acts, it is prevented that the heat in the jacket 5th spreads and the coat 5 overall to a higher Brings temperature. The temperature of the jacket 5 will rather held in an area that is relevant to the material of the jacket 5, usually a flexible plastic, is still acceptable.
  • the heating device 16 can be implemented in various ways become. It can also contain IR radiation electrical or magnetic fields work. It is also possible steam or hot air towards the belt 15 conduct.
  • the distance between the heater 16 and the nip 11 is exaggerated for illustrative purposes.
  • the heater 16 should only go as far from Nip 11 must be removed, that the tape 15 is still in the nip 11 has the desired high temperature.
  • the temperature should be greater than 70 ° C, preferably even in a range from 100 ° C to 150 ° C.
  • the heating device 16 can of course also on the other Side of the band 15, so on the inside of the Circulation, be arranged. However, it is an advantage if you heat the band 15 from the side, the later comes into contact with web 2.
  • the belt 15 can be used to treat the web 2 regardless of the surface properties of the jacket 5 perform.
  • the lane 2 has no contact with the Sheath 2.
  • the sheath 5 is also less open Wear and tear.
  • the band 15 consists of at least consists of two layers, namely a good thermal conductor Layer, for example of metal, the the web 2 abuts, and a heat insulating Layer that lies against the jacket 5. With this configuration the jacket 5 is only slightly heated. Nevertheless, a sufficient amount of heat can enter the web 2 be entered.

Landscapes

  • Paper (AREA)
EP20020024341 2001-11-24 2002-11-02 Calandre et procédé pour le lissage de bandes de papier ou carton Expired - Fee Related EP1314819B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001157687 DE10157687B4 (de) 2001-11-24 2001-11-24 Kalander und Verfahren zum Glätten einer Papier- oder Kartonbahn
DE10157687 2001-11-24

Publications (3)

Publication Number Publication Date
EP1314819A2 true EP1314819A2 (fr) 2003-05-28
EP1314819A3 EP1314819A3 (fr) 2004-01-02
EP1314819B1 EP1314819B1 (fr) 2006-08-09

Family

ID=7706841

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020024341 Expired - Fee Related EP1314819B1 (fr) 2001-11-24 2002-11-02 Calandre et procédé pour le lissage de bandes de papier ou carton

Country Status (2)

Country Link
EP (1) EP1314819B1 (fr)
DE (2) DE10157687B4 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004106628A1 (fr) * 2003-05-30 2004-12-09 Metso Paper, Inc. Structure d'une courroie
WO2005054575A1 (fr) * 2003-12-05 2005-06-16 Voith Paper Patent Gmbh Systeme pour lisser une bande de matiere fibreuse
EP1811083A1 (fr) * 2006-01-07 2007-07-25 Voith Patent GmbH Satinage
WO2009080872A1 (fr) * 2007-12-20 2009-07-02 Stora Enso Oyj Agencement associé à la section de presse d'une machine de formation de feuilles et carton ou papier produit dans un tel agencement
EP2119825A1 (fr) * 2008-05-17 2009-11-18 Andritz Küsters GmbH Calendre
EP2546412A1 (fr) * 2011-07-15 2013-01-16 Metso Paper Inc. Dispositif et procédé pour chauffer au moins un élément d'un appareil de traitement dans une section de presse, séchage et/ou finition d'une machine de traitement d'une bande de matériau fibreux

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10227979C5 (de) * 2002-06-22 2013-07-25 Voith Patent Gmbh Breitnipvorrichtung und Verfahren zum Satinieren einer Materialbahn

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0370185A1 (fr) * 1988-10-31 1990-05-30 Sulzer-Escher Wyss Gmbh Procédé de lissage d'une rande de papier ou de carton
WO1998044196A1 (fr) * 1997-04-02 1998-10-08 Valmet Corporation Procede de calandrage et calandre utilisant ledit procede
WO2002068755A2 (fr) * 2001-02-27 2002-09-06 Metso Paper, Inc. Calandre

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0370185A1 (fr) * 1988-10-31 1990-05-30 Sulzer-Escher Wyss Gmbh Procédé de lissage d'une rande de papier ou de carton
WO1998044196A1 (fr) * 1997-04-02 1998-10-08 Valmet Corporation Procede de calandrage et calandre utilisant ledit procede
WO2002068755A2 (fr) * 2001-02-27 2002-09-06 Metso Paper, Inc. Calandre

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004106628A1 (fr) * 2003-05-30 2004-12-09 Metso Paper, Inc. Structure d'une courroie
AT502000A1 (de) * 2003-05-30 2006-12-15 Metso Paper Inc Bandaufbau
AT502000B1 (de) * 2003-05-30 2007-08-15 Metso Paper Inc Bandaufbau
WO2005054575A1 (fr) * 2003-12-05 2005-06-16 Voith Paper Patent Gmbh Systeme pour lisser une bande de matiere fibreuse
EP1811083A1 (fr) * 2006-01-07 2007-07-25 Voith Patent GmbH Satinage
WO2009080872A1 (fr) * 2007-12-20 2009-07-02 Stora Enso Oyj Agencement associé à la section de presse d'une machine de formation de feuilles et carton ou papier produit dans un tel agencement
US8480858B2 (en) 2007-12-20 2013-07-09 Stora Enso Oyj Board or paper produced in an arrangement in connection with the press section of a web-forming machine
CN101903593B (zh) * 2007-12-20 2013-10-09 斯托拉恩索公司 与幅材成形机的压榨部相关的装置及在该装置中生产的纸板或纸
EP2119825A1 (fr) * 2008-05-17 2009-11-18 Andritz Küsters GmbH Calendre
EP2546412A1 (fr) * 2011-07-15 2013-01-16 Metso Paper Inc. Dispositif et procédé pour chauffer au moins un élément d'un appareil de traitement dans une section de presse, séchage et/ou finition d'une machine de traitement d'une bande de matériau fibreux

Also Published As

Publication number Publication date
EP1314819B1 (fr) 2006-08-09
DE50207775D1 (de) 2006-09-21
EP1314819A3 (fr) 2004-01-02
DE10157687A1 (de) 2003-06-12
DE10157687B4 (de) 2005-11-17

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