EP0732446A1 - Calandre pour le traitement d'une bande de papier sur deux faces - Google Patents

Calandre pour le traitement d'une bande de papier sur deux faces Download PDF

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Publication number
EP0732446A1
EP0732446A1 EP96103278A EP96103278A EP0732446A1 EP 0732446 A1 EP0732446 A1 EP 0732446A1 EP 96103278 A EP96103278 A EP 96103278A EP 96103278 A EP96103278 A EP 96103278A EP 0732446 A1 EP0732446 A1 EP 0732446A1
Authority
EP
European Patent Office
Prior art keywords
rollers
calender according
calender
gap
soft
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
EP96103278A
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German (de)
English (en)
Other versions
EP0732446B1 (fr
Inventor
Franz Kayser
Rolf Dr. Van Haag
Ulrich Rothfuss
Reinhard Wenzel
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 Paper GmbH and Co KG
Original Assignee
Voith Sulzer Finishing 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 Sulzer Finishing GmbH filed Critical Voith Sulzer Finishing GmbH
Publication of EP0732446A1 publication Critical patent/EP0732446A1/fr
Application granted granted Critical
Publication of EP0732446B1 publication Critical patent/EP0732446B1/fr
Anticipated expiration legal-status Critical
Revoked 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

Definitions

  • the invention relates to a calender for the two-sided treatment of a paper web, in particular for the production of gravure-capable paper, with a roll stack which can be loaded from the end and which has hard rolls and soft rolls, as well as working gaps formed between a hard and a soft roll Part of the rollers is heated.
  • Calenders of this type are widely known, for example from the brochure "The New Super Calender Concepts” from Sulzer Papertec from 1994 (code 05/94 d). They are used for the final treatment of a paper web so that it has a desired value for smoothness, gloss, thickness, bulk and the like. receives, and are set up separately from a paper machine.
  • the "soft" or elastic rollers carry a cover consisting mainly of a fiber material.
  • the heated rollers have a surface temperature limited to around 80 ° C.
  • the average compressive stress in the nips is between 15 and 30 N / mm 2 in normal operation, values up to a maximum of 40 N / mm 2 have already been used in the lowest working gap.
  • a stack of 9 or 10 rollers is sufficient.
  • 12 to 16 rollers are required for higher quality papers, such as gravure papers, technical papers or compression papers. Such a large machine is expensive and takes up a lot of space.
  • roller diameters are larger than those of the supercalender due to their strength, high line loads have to be applied in order to generate the compressive stresses required for a desired calendering result.
  • replacement rolls for the elastic rolls are expensive because they are to be controllable at the same time as deflection.
  • the invention has for its object to provide a calender of the type described above, which is smaller and cheaper to manufacture and operate, but still allows excellent calendering results.
  • the division into two stacks has the further advantage that the dependency of the line load on the roller weight is less, that is to say it is possible to work in the uppermost gap with a much higher line load than before.
  • the dwell time is at most 0.9 ms and that the heating to a surface temperature of maximum 150 ° C. and the load to an average compressive stress of up to 60 N / mm 2 is designed. In fact, only a moderate increase in surface temperature and compressive stress is required.
  • the residence time is 0.2 to 0.5 ms
  • the surface temperature is 110 to 125 ° C.
  • the average compressive stress is 45 to 55 N / mm 2 .
  • condition applies to the majority of or all of the working columns. Because the increased values are evenly distributed over several working columns, very small increases are sufficient.
  • top and / or bottom roller can be controlled by deflection. In this way, the compressive stress can be evened out over the entire width of the rollers.
  • top and bottom rollers are heated.
  • the heat energy can be supplied better via these hard rollers than via the adjacent soft roller. This also applies if the top and / or bottom roller can be controlled by deflection, because, for example, a heated hydraulic fluid can be supplied.
  • the soft rollers have a plastic cover.
  • Such plastic-related rollers are much better suited than rollers covered with fiber material for operation with increased medium compressive stress. They allow operation with a compressive stress of more than 42 N / mm 2 .
  • the reference should be designed for a compressive strength of up to about 60 N / mm 2 .
  • plastic cover consists essentially of fiber-reinforced epoxy resin.
  • Such a plastic cover has a service life of at least twelve weeks.
  • the stack or stacks are arranged in-line in a paper machine or coating machine.
  • the paper web therefore arrives at an elevated temperature, for example at 60 ° C., at the inlet nip of the calender and therefore only needs a small amount of heat to make sufficient deformation energy available.
  • plastic covers which are desirable for reasons of higher compressive stress, are particularly suitable because - in contrast to covers made of fiber material - they are much less sensitive to markings and therefore only rarely have to be removed and sanded.
  • the calenders consisting of two stacks have the further advantage that they are more suitable for in-line use because the running paper web in each stack only has to be passed through a smaller number of gaps.
  • all rollers have a drive.
  • the paper web can therefore be drawn in with the calender running because all the rollers can be brought to the same speed before the gaps are closed.
  • the stack be covered by a protective hood that reduces heat radiation.
  • a protective hood reduces the heat radiation, so that the manufacturing hall does not have to be heated as much and excessively air-conditioned.
  • the temperature inside the hood is kept at a higher value, so that the heat input via the heating device can be kept low.
  • the calender 1 illustrated in FIG. 1 has a roll stack consisting of eight rolls, namely a heatable, deflection-controllable hard top roll 2, a soft roll 3, a heatable hard roll 4, a soft roll 5, a soft roll 6, one heatable hard roller 7, a soft roller 8 and a heatable, deflection-controllable hard lower roller 9.
  • a heatable, deflection-controllable hard top roll 2 a soft roll 3
  • a heatable hard roll 4 a soft roll 5
  • a soft roll 6 one heatable hard roller 7, a soft roller 8 and a heatable, deflection-controllable hard lower roller 9.
  • a paper web 17 is fed from a paper machine 18, passes through the working gaps 10 to 12, the changing gap 16 and the working gaps 13 to 15 under the guidance of guide rollers 19, whereupon it is wound up in a winding device 20.
  • the paper web lies on one side, in the three lower working gaps 13 to 15 on the other side against the hard rollers, so that the desired surface structure, for example gloss or smoothness, is achieved on both sides.
  • each of the rollers 2 to 9 has its own drive 21. This enables the paper web 17 to be drawn in during operation.
  • Each of the soft rollers 3, 5, 6 and 8 has a cover 22 made of plastic, in particular fiber-reinforced epoxy resin. This Material is less sensitive to marking than a cover made of fiber material, so that the longer service lives that are essential for in-line operation are achieved. In addition, a higher compressive stress can be applied to the cover. It is also more resistant to higher temperatures than paper. An example of this is a cover from "TopTec 4" from Scapa Kern, Wimpassing / Austria.
  • the force P is used to ensure that the mean compressive stress p in the working gaps 10 to 12 and 13 to 15, or at least in the lowest gap, is between 45 and 60 N / mm 2 .
  • the surface temperature of the heatable rollers 2, 4, 7 and 9 is between 100 and 150 ° C.
  • the diameter of the rollers and the elasticity of the covering 22 are chosen so that there is a gap width of approximately 2 to 15 mm, preferably approximately 8 mm. Depending on the web speed, this leads to dwell times t in each working gap of 0.1 to 0.9 ms. It is preferred if the temperature T is only slightly above the lower limit, for example 110 ° C., and if the compressive stress is only slightly above the lower limit, for example 50 N / mm 2 .
  • FIG. 2 illustrates a 2 ⁇ 5-roll calender 32, which has a hard top roll 33, a soft roll 34, a hard roll 35, a soft roll 36 and a hard bottom roll 37 in a first stack and in a second stack a hard top roller 38, a soft roller 39, a hard roller 40, a soft roller 41 and a hard bottom roller 42.
  • Each stack therefore has three working gaps which are traversed by the paper web 43 in such a way that in the first stack one web surface and in the second stack the other web surface comes into contact with the hard rollers.
  • the heating of the rolls, the deflection control of the upper and lower rolls and the loading of the two roll stacks can be carried out in a similar manner to that in the calender of FIG. 1.
  • FIG. 3 illustrates a 6-roll calender 44 having a single stack comprising a hard top roll 45, a soft roll 46, a hard roll 47, soft rolls 48 and 49, and a hard bottom roll 50.
  • one surface of the paper web 52 is smoothed, below the interchangeable nip 51 the other surface.
  • the results of the paper treatment can be improved further by the fact that the rollers, in particular the center rollers, are mounted in levers in an unillustrated manner, the overhanging weights being advantageously compensated for by supporting devices, as is known from EP 0 285 942 B1.

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  • Paper (AREA)
  • Rolls And Other Rotary Bodies (AREA)
EP96103278A 1995-03-09 1996-03-04 Calandre pour le traitement d'une bande de papier sur deux faces Revoked EP0732446B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29504034U DE29504034U1 (de) 1995-03-09 1995-03-09 Kalander für die zweiseitige Behandlung einer Papierbahn
DE29504034U 1995-03-09

Publications (2)

Publication Number Publication Date
EP0732446A1 true EP0732446A1 (fr) 1996-09-18
EP0732446B1 EP0732446B1 (fr) 1998-10-21

Family

ID=8005101

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96103278A Revoked EP0732446B1 (fr) 1995-03-09 1996-03-04 Calandre pour le traitement d'une bande de papier sur deux faces

Country Status (5)

Country Link
US (1) US5791242A (fr)
EP (1) EP0732446B1 (fr)
JP (1) JP2612680B2 (fr)
CA (1) CA2169978C (fr)
DE (2) DE29504034U1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0732447B1 (fr) * 1995-03-09 1998-11-25 Voith Sulzer Finishing GmbH Calandre pour le traitement d'une bande de papier sur deux faces
WO2007125162A1 (fr) * 2006-05-02 2007-11-08 Metso Paper, Inc. Solution de modification d'une ligne de fabrication de type autonome dans une machine à papier
EP1266088B2 (fr) † 2000-02-16 2010-03-24 Metso Paper, Inc. Procede de calandrage de papier et dispositif correspondant comprenant un rouleau chauffable
US7871496B2 (en) 2003-11-28 2011-01-18 Voith Paper Patent Gmbh Paper machine
AT505347B1 (de) * 2007-04-12 2012-01-15 Metso Paper Inc Verfahren zum kalandrieren einer faserbahn

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29521610U1 (de) * 1995-03-09 1997-11-20 Voith Sulzer Finishing GmbH, 47803 Krefeld Kalander für die Behandlung einer Papierbahn
DE29504034U1 (de) * 1995-03-09 1995-05-04 Voith Sulzer Finishing GmbH, 47803 Krefeld Kalander für die zweiseitige Behandlung einer Papierbahn
DE19508349C2 (de) * 1995-03-09 2003-04-03 Voith Paper Patent Gmbh Kalander für die Behandlung einer Papierbahn und Verfahren zu dessen Betrieb
DE19508352B4 (de) * 1995-03-09 2005-07-21 Voith Paper Patent Gmbh Kalander für die Behandlung einer Papierbahn
CA2188074C (fr) 1995-11-13 2000-12-05 Dieter Kurth Procede de transformation d'une bande de papier et d'une pression en continu, et machine d'imprimerie pour la mise en oeuvre dudit procede
DE29518424U1 (de) * 1995-11-21 1996-03-14 Voith Sulzer Finishing GmbH, 47803 Krefeld Kalander in einer Papier- oder Streichmaschine
DE19547164C1 (de) * 1995-12-16 1997-02-06 Voith Sulzer Finishing Gmbh Kalander für die Behandlung einer Papierbahn und Anwendung dieses Kalanders
US7357072B2 (en) 1996-12-06 2008-04-15 Eduard Kusters Maschinefabrik Gmbh & Co. Kg Calender
DE19650576C2 (de) * 1996-12-06 2001-02-15 Kuesters Eduard Maschf Kalander
DE19711241C2 (de) * 1997-03-18 2002-08-29 Voith Paper Patent Gmbh Kalander für Papier und ähnliches Bahnmaterial
DE69822853T4 (de) * 1997-05-07 2005-08-11 Metso Paper, Inc. Verfahren und vorrichtung zur berechnung und steuerung der linearen lastverteilung in einem mehrspalt-kalander und mehrspalt-kalander
US20030126998A1 (en) * 1998-03-17 2003-07-10 Eduard Kusters Maschinenfabrik Gmbh & Co. Kg Calender arrangement
DE19811474A1 (de) * 1998-03-17 1999-09-23 Kuesters Eduard Maschf Kalanderanordnung
US7096779B2 (en) 1998-03-17 2006-08-29 Eduard Küsters Maschinenfabrik GmbH & Co. KG Calender arrangement
DE19832067B4 (de) * 1998-07-16 2005-04-21 Voith Paper Patent Gmbh Kalander für Bahnen aus Papier oder ähnlichem Material
US6368444B1 (en) 1998-11-17 2002-04-09 Kimberly-Clark Worldwide, Inc. Apparatus and method for cross-directional stretching of polymeric film and other nonwoven sheet material and materials produced therefrom
DE19940897C1 (de) * 1999-08-27 2000-11-09 Kuesters Beloit Gmbh & Co Kg Kalander
FI107947B (fi) * 2000-06-07 2001-10-31 Metso Paper Inc Menetelmä paperirainan profiloimiseksi
DE10353138B3 (de) * 2003-11-14 2005-08-11 Voith Paper Patent Gmbh Kalander
DE10355686A1 (de) * 2003-11-28 2005-06-23 Voith Paper Patent Gmbh Papiermaschine
DE102004003921A1 (de) * 2004-01-27 2005-11-24 Voith Paper Patent Gmbh Verfahren und Anordnung zur Herstellung einer holzfrei gestrichenen, matten oder halbmatten Papierbahn
FI118725B (fi) * 2004-08-19 2008-02-29 Veisto Oy Pyörösaha, jossa on teräohjain
RU2365492C2 (ru) * 2007-05-14 2009-08-27 Иван Васильевич Малахов Круглопильный станок для продольной распиловки древесины

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027270A1 (fr) * 1979-10-15 1981-04-22 Valmet Oy Calandre à papier
US5237915A (en) * 1992-02-04 1993-08-24 The Mead Corporation Mixed roll calender
DE29504034U1 (de) * 1995-03-09 1995-05-04 Voith Sulzer Finishing GmbH, 47803 Krefeld Kalander für die zweiseitige Behandlung einer Papierbahn

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1793114A (en) * 1929-03-27 1931-02-17 Minton Vacuum Dryer Corp Slip-control calender
US3124504A (en) * 1960-04-04 1964-03-10 Gloss finishing of uncoated paper
US3230867A (en) * 1961-12-04 1966-01-25 Benjamin J H Nelson Paper finishing mechanism
US4749445A (en) * 1984-05-18 1988-06-07 S. D. Warren Company Method of finishing paper utilizing substrata thermal molding
JPH01183595A (ja) * 1988-01-11 1989-07-21 Mitsubishi Paper Mills Ltd コーテッド紙のスーパーカレンダー処理方法
FI96334C (fi) * 1993-11-24 1996-06-10 Valmet Paper Machinery Inc Menetelmä paperin tai vastaavan rainamateriaalin kalanteroinnissa ja menetelmää soveltava kalanteri

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027270A1 (fr) * 1979-10-15 1981-04-22 Valmet Oy Calandre à papier
US5237915A (en) * 1992-02-04 1993-08-24 The Mead Corporation Mixed roll calender
DE29504034U1 (de) * 1995-03-09 1995-05-04 Voith Sulzer Finishing GmbH, 47803 Krefeld Kalander für die zweiseitige Behandlung einer Papierbahn

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JOHN D. PEEL: "supercalendering and soft nip calendering compared", TAPPI JOURNAL, vol. 74, no. 10, October 1991 (1991-10-01), NORCROSS, GA., US, pages 179 - 186, XP000234497 *
THOMAS J. LAUTERBACH: "synthetic composite covers in supercalenders: update", TAPPI JOURNAL, vol. 76, no. 6, June 1993 (1993-06-01), NORCROSS, GA., US, pages 115 - 119, XP000420366 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0732447B1 (fr) * 1995-03-09 1998-11-25 Voith Sulzer Finishing GmbH Calandre pour le traitement d'une bande de papier sur deux faces
EP1266088B2 (fr) † 2000-02-16 2010-03-24 Metso Paper, Inc. Procede de calandrage de papier et dispositif correspondant comprenant un rouleau chauffable
US7871496B2 (en) 2003-11-28 2011-01-18 Voith Paper Patent Gmbh Paper machine
US8062479B2 (en) 2003-11-28 2011-11-22 Voith Paper Patent Gmbh Paper machine
WO2007125162A1 (fr) * 2006-05-02 2007-11-08 Metso Paper, Inc. Solution de modification d'une ligne de fabrication de type autonome dans une machine à papier
AT505347B1 (de) * 2007-04-12 2012-01-15 Metso Paper Inc Verfahren zum kalandrieren einer faserbahn

Also Published As

Publication number Publication date
CA2169978C (fr) 1999-03-23
EP0732446B1 (fr) 1998-10-21
JPH08260380A (ja) 1996-10-08
US5791242A (en) 1998-08-11
DE59600691D1 (de) 1998-11-26
JP2612680B2 (ja) 1997-05-21
DE29504034U1 (de) 1995-05-04
CA2169978A1 (fr) 1996-09-10

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