WO2002029159A1 - Procede de calandrage d'une feuille continue et systeme associe comportant une calandre a grande longueur de contact - Google Patents

Procede de calandrage d'une feuille continue et systeme associe comportant une calandre a grande longueur de contact Download PDF

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Publication number
WO2002029159A1
WO2002029159A1 PCT/FI2001/000827 FI0100827W WO0229159A1 WO 2002029159 A1 WO2002029159 A1 WO 2002029159A1 FI 0100827 W FI0100827 W FI 0100827W WO 0229159 A1 WO0229159 A1 WO 0229159A1
Authority
WO
WIPO (PCT)
Prior art keywords
nip
roll
long
calendering
calender
Prior art date
Application number
PCT/FI2001/000827
Other languages
English (en)
Inventor
Matti Lares
Mikko Tani
Kimmo Saharinen
Henri Vaittinen
Pekka Koivukunnas
Reijo PIETIKÄINEN
Original Assignee
Metso Paper, Inc.
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
Priority claimed from FI20002170A external-priority patent/FI108556B/fi
Application filed by Metso Paper, Inc. filed Critical Metso Paper, Inc.
Priority to AU2001289975A priority Critical patent/AU2001289975A1/en
Priority to JP2002532720A priority patent/JP2004510897A/ja
Priority to DE60119956T priority patent/DE60119956T2/de
Priority to EP01969838A priority patent/EP1330573B1/fr
Publication of WO2002029159A1 publication Critical patent/WO2002029159A1/fr

Links

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

Definitions

  • the present invention relates to a method for calendering a material web and a calender arrangement for implementing the method.
  • the object of the invention is a method for calendering a material web, especially a paper or board web, in a long-nip calender, in which the backing roll of the long-nip roll is a heated, metal-surfaced roll, in which case the length of the nip in the direction of travel of the material web is within the range from approximately 10 mm to 500 mm.
  • the invention also relates to a calender arrangement for calendering a material web, especially a paper or board web, the said arrangement comprising a long-nip calender, in which the backing roll of the long-nip roll is a heated, metal-surfaced roll, the rolls of which form a long nip between them, the length of which in the direction of travel of the web is within the range from approximately 10 mm to 500 mm.
  • the effective length of the nip increases due to the initial contact and because it is possible to use much softer polymers as belt material than in roll coatings without problems arising from deformation due to heat.
  • the pressure impulse directed at the paper can be increased without the pressure peak becoming too great and the bulkiness beginning to diminish.
  • a belt calendering solution has been previously described, for example, in Finnish patent publication no. 95061, in which the calendering nip is formed between a heated, hard-surfaced roll and a metal belt supported by means of a calender roll having a resilient coating.
  • One disadvantage of this solution is that the maximum nip pressure is insufficient for several paper grades requiring a high degree of calendering.
  • One aim of the present invention is to achieve a solution by means of which calendering can be carried out between two hard surfaces without the disadvantages relating to conventional machine calendering, such as relatively great variations in gloss and a decrease in bulk. These disadvantages are caused by the relatively high nip pressure used in machine calendering, which is typically of the order of approximately 100 MPa.
  • the method relating to the invention is characterised in that as a long-nip roll is used a roll, the belt mantle of which is made of metal, at least as concerns its calendering, longitudinal, central area; that in the method, a nip pressure within the range from about 0.1 MPa to about 50 MPa is directed at the material web W, and that the surface temperature of the rolls before the nip N is adjusted to a value from about 60°C to about 350°C.
  • the nip pressure is preferably within the range from about 0.2 MPa to about 15 MPa, and the surface temperature is preferably within the range from about 120°C to about 300°C.
  • the calender arrangement relating to the invention is in turn characterised in that the belt mantle of the long-nip roll is made of metal, at least as concerns its calendering, longitudinal, central area.
  • Figure 1 shows a diagrammatic view of the long-nip calender arrangement relating to the invention, as seen from the end, and
  • Figure 2 shows a diagrammatic perspective view of an embodiment of a belt mantle of a long-nip roll applicable to the calender arrangement relating to the invention.
  • Figure 3 shows a diagrammatic view of another embodiment of a belt mantle of a long-nip roll applicable to the calender arrangement relating to the invention, as seen from the end.
  • the calender arrangement relating to the invention comprises a shoe roll 15, in which on a stationary axle 16, at the nip N, is arranged a loading member 17, which comprises a shoe part 19 extending over the width of the nip (in the longitudinal direction of the roll), and the pistons 20 loading it.
  • a belt mantle 30 which is made of metal, at least in its calendering central area, as shown in Figure 2.
  • the central area of the belt mantle 30 is comprised of a steel belt 31, which extends over the length of the shoe 19, and to it are connected end sections 32 made of resilient material, which may be, for example, polymer, rubber, silicone, etc.
  • the end sections 32 are connected to the steel belt 31 in a flexible manner, for example, by glueing or curing. The connection is made at a point outside the shoe part 19 to avoid directing a fatiguing load on the steel belt.
  • the steel belt 30 can also be made completely of metal, for example, by providing the end sections of the belt mantle with elastic sealing rings, which are fitted to rotate with the said mantle, as described in Finnish patent no. 66932.
  • Figure 3 shows a solution in which a thin-walled metal cylinder 41 is fitted over the polymer belt 40 of a shoe roll 15, the cylinder being tightened in place by means of the internal air pressure of the roll.
  • the length of the cylinder 41 is the same as the width of the material web and it is not fixed to the end structures of the shoe roll, whereby loading causing fatigue in metal materials is avoided in the edge area of the shoe.
  • a long nip N Between the long-nip roll 15 and its heated, metal-surfaced backing roll 11 is formed a long nip N, through which the material web W is guided, in order to calender it.
  • a nip pressure which is within the range from about 0.1 to about 50 MPa, preferably within the range from about 0.2 to about 15 MPa, which is considerably less than the pressure used in normal machine calendering, which is of the order of 100 MPa.
  • the surface temperature of the rolls before the nip IM is adjusted to a value from about 60°C to about 350°C, and preferably to a value from about 120°C to about 300°C, when the surface temperature used in conventional machine calendering is typically within the range from about 60°C to about 120°C.
  • the length of the nip N in the direction of travel of the material web is preferably within the range from about 10 mm to about 500 mm.
  • the surface roughness R a of both the steel belt 30 of the long-nip roll 15 and of the outer surface of the backing roll 11 is preferably less than 0.3 ⁇ m, whereby the material web W can be subjected to gloss treatment.
  • the solution relating to the invention is applicable to both on-line use and off-line use. It is conceivable to use the calender arrangement relating to the invention, for example, on the press section for drying the material web, for pre-calendering before the coating machine and for final calendering after the coating machine.
  • the paper machine When using the apparatus relating to the invention in the dryer section of a paper machine, the paper machine can be shortened by leaving a part of the drying cylinder out.

Landscapes

  • Paper (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Golf Clubs (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

L'invention concerne un procédé et un système de calandrage permettant de calandrer une feuille de matériau (W), en particulier une feuille de papier ou de carton continue, dans une calandre à grande longueur de contact, dans laquelle le contre-cylindre (11) du cylindre à grande longueur de contact (15) est un cylindre chauffé à surface refroidie. La longueur de la grande longueur de contact (N) dans la direction de la course de la feuille de matériau (W) est approximativement comprise dans une plage allant de 10 à 500 mm. Selon l'invention, pour le cylindre à grande longueur de contact (15), on utilise un cylindre dont le revêtement de courroie (30) est en métal, au moins en ce qui concerne sa zone de calandrage centrale et longitudinale (31). Dans ce procédé, une pression de contact approximativement comprise dans une plage allant de 0,1 à 50 Mpa est exercée sur la feuille de matériau (W), et la température de surface des cylindres (11,15) en amont de la longueur de contact (N) est réglée à une valeur approximativement comprise entre 60 et 350 °C.
PCT/FI2001/000827 2000-10-02 2001-09-21 Procede de calandrage d'une feuille continue et systeme associe comportant une calandre a grande longueur de contact WO2002029159A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU2001289975A AU2001289975A1 (en) 2000-10-02 2001-09-21 Method and arrangement for calendering a web comprising a long-nip calender
JP2002532720A JP2004510897A (ja) 2000-10-02 2001-09-21 ロング・ニップ・カレンダーを含む材料ウェブカレンダー掛け装置及び方法
DE60119956T DE60119956T2 (de) 2000-10-02 2001-09-21 Verfahren und anordnung zum kalandrieren einer bahn mit langspaltkalander
EP01969838A EP1330573B1 (fr) 2000-10-02 2001-09-21 Procede de calandrage d'une feuille continue et systeme associe comportant une calandre a grande longueur de contact

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20002170A FI108556B (fi) 2000-05-03 2000-10-02 Menetelmä materiaalirainan kalanteroimiseksi sekä menetelmän toteuttava kalanterijärjestely
FI20002170 2000-10-02

Publications (1)

Publication Number Publication Date
WO2002029159A1 true WO2002029159A1 (fr) 2002-04-11

Family

ID=8559211

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2001/000827 WO2002029159A1 (fr) 2000-10-02 2001-09-21 Procede de calandrage d'une feuille continue et systeme associe comportant une calandre a grande longueur de contact

Country Status (6)

Country Link
EP (1) EP1330573B1 (fr)
JP (1) JP2004510897A (fr)
AT (1) ATE327376T1 (fr)
AU (1) AU2001289975A1 (fr)
DE (1) DE60119956T2 (fr)
WO (1) WO2002029159A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003023138A1 (fr) * 2001-09-12 2003-03-20 Metso Paper, Inc. Procede et concept de fabrication d'une feuille continue de fibres, notamment d'une feuille continue de carton
EP1382742A2 (fr) * 2002-07-18 2004-01-21 Voith Paper Patent GmbH Dispositif et Procédé pour l' imprégnation d' une bande de papier ou carton
EP1398414A2 (fr) * 2002-08-30 2004-03-17 Voith Paper Patent GmbH Aménagement de calandre à pinçage prolongé et procédé de satinage d'une bande de papier ou de carton
WO2004079091A1 (fr) * 2003-03-07 2004-09-16 Metso Paper, Inc. Procede de traitement d'une nappe fibreuse
WO2004106628A1 (fr) * 2003-05-30 2004-12-09 Metso Paper, Inc. Structure d'une courroie
DE10327673A1 (de) * 2003-06-20 2005-01-13 Voith Paper Patent Gmbh Verfahren zum Glätten einer Papier-oder Kartonbahn und Breitnip-Kalander
EP1571257A1 (fr) * 2004-03-06 2005-09-07 Voith Paper Patent GmbH Procédé et dispositif pour le traitement d'une bande de papier ou carton
EP1674615A1 (fr) 2004-12-24 2006-06-28 Voith Paper Patent GmbH Dispositif de lissage
EP1811083A1 (fr) * 2006-01-07 2007-07-25 Voith Patent GmbH Satinage
WO2012143246A1 (fr) * 2011-04-20 2012-10-26 Voith Patent Gmbh Cylindre et calandreuse équipée de ce cylindre

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5329847A (en) * 1992-02-13 1994-07-19 J.M. Voith Gmbh Press roll having components exhibiting approximately equal gravity induced flexure
WO1998044196A1 (fr) * 1997-04-02 1998-10-08 Valmet Corporation Procede de calandrage et calandre utilisant ledit procede

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5329847A (en) * 1992-02-13 1994-07-19 J.M. Voith Gmbh Press roll having components exhibiting approximately equal gravity induced flexure
WO1998044196A1 (fr) * 1997-04-02 1998-10-08 Valmet Corporation Procede de calandrage et calandre utilisant ledit procede

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003023138A1 (fr) * 2001-09-12 2003-03-20 Metso Paper, Inc. Procede et concept de fabrication d'une feuille continue de fibres, notamment d'une feuille continue de carton
EP1382742A3 (fr) * 2002-07-18 2005-02-09 Voith Paper Patent GmbH Dispositif et Procédé pour l' imprégnation d' une bande de papier ou carton
EP1382742A2 (fr) * 2002-07-18 2004-01-21 Voith Paper Patent GmbH Dispositif et Procédé pour l' imprégnation d' une bande de papier ou carton
DE10232550C5 (de) * 2002-07-18 2013-02-07 Voith Patent Gmbh Vorrichtung und Verfahren zum Imprägnieren einer Papier- oder Kartonbahn
EP1398414A2 (fr) * 2002-08-30 2004-03-17 Voith Paper Patent GmbH Aménagement de calandre à pinçage prolongé et procédé de satinage d'une bande de papier ou de carton
EP1398414A3 (fr) * 2002-08-30 2005-02-09 Voith Paper Patent GmbH Aménagement de calandre à pinçage prolongé et procédé de satinage d'une bande de papier ou de carton
WO2004079091A1 (fr) * 2003-03-07 2004-09-16 Metso Paper, Inc. Procede de traitement d'une nappe fibreuse
WO2004106628A1 (fr) * 2003-05-30 2004-12-09 Metso Paper, Inc. Structure d'une courroie
DE10327673A1 (de) * 2003-06-20 2005-01-13 Voith Paper Patent Gmbh Verfahren zum Glätten einer Papier-oder Kartonbahn und Breitnip-Kalander
DE10327673B4 (de) * 2003-06-20 2005-04-14 Voith Paper Patent Gmbh Verfahren zum Glätten einer Papier-oder Kartonbahn und Breitnip-Kalander
EP1571257A1 (fr) * 2004-03-06 2005-09-07 Voith Paper Patent GmbH Procédé et dispositif pour le traitement d'une bande de papier ou carton
US7691232B2 (en) 2004-03-06 2010-04-06 Voith Paper Patent Gmbh Method and device for treating a paper or cardboard web
EP1674615A1 (fr) 2004-12-24 2006-06-28 Voith Paper Patent GmbH Dispositif de lissage
EP1811083A1 (fr) * 2006-01-07 2007-07-25 Voith Patent GmbH Satinage
WO2012143246A1 (fr) * 2011-04-20 2012-10-26 Voith Patent Gmbh Cylindre et calandreuse équipée de ce cylindre

Also Published As

Publication number Publication date
DE60119956D1 (de) 2006-06-29
EP1330573B1 (fr) 2006-05-24
JP2004510897A (ja) 2004-04-08
EP1330573A1 (fr) 2003-07-30
AU2001289975A1 (en) 2002-04-15
ATE327376T1 (de) 2006-06-15
DE60119956T2 (de) 2007-05-24

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