EP0732447B1 - 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
EP0732447B1
EP0732447B1 EP96103279A EP96103279A EP0732447B1 EP 0732447 B1 EP0732447 B1 EP 0732447B1 EP 96103279 A EP96103279 A EP 96103279A EP 96103279 A EP96103279 A EP 96103279A EP 0732447 B1 EP0732447 B1 EP 0732447B1
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EP
European Patent Office
Prior art keywords
rolls
calender according
calender
compressive stress
designed
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.)
Expired - Lifetime
Application number
EP96103279A
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German (de)
English (en)
Other versions
EP0732447B2 (fr
EP0732447A1 (fr
Inventor
Franz Kayser
Rolf Dr. Van Haag
Ulrich Rothfuss
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 Sulzer Finishing GmbH
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Publication date
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Application filed by Voith Sulzer Finishing GmbH filed Critical Voith Sulzer Finishing GmbH
Publication of EP0732447A1 publication Critical patent/EP0732447A1/fr
Application granted granted Critical
Publication of EP0732447B1 publication Critical patent/EP0732447B1/fr
Publication of EP0732447B2 publication Critical patent/EP0732447B2/fr
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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
    • 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
    • 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
    • D21G1/0233—Soft rolls

Definitions

  • the invention relates to a calender for the two-sided treatment of a paper web, in particular for the production of rotogravure paper, with a from the end resilient roll stack, the hard rolls and soft rollers as well as between hard ones and has a working gap formed by a soft roller, some of the rollers being heatable.
  • 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 have a cover consisting mainly of 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, and about 40 N / mm 2 have already been used in the lowest working gap.
  • a stack of 9 or 10 rollers is sufficient for papers that are easy to satin, such as writing paper. Such a large machine is expensive and takes up a lot of space.
  • So-called compact calenders are also known, where a heated roller with a deflection controllable soft roller forms a gap and for two-sided treatment of the paper web also two such calenders are connected in series can.
  • this can only be easily satinized Papers, but not technical papers, e.g. Silicon base papers as well as papers for gravure printing, produce.
  • the heatable Rollers therefore have a surface temperature of 160 to 200 ° C. A lot of heat energy is radiated, which must be removed by air conditioning. Because the roller diameter is larger due to the strength than with the supercalender, high line loads must be be applied to achieve a desired satin finish to generate the necessary compressive stresses.
  • replacement rollers for the elastic rollers expensive because it is deflectable should be.
  • the invention has for its object a calender of the type described at the beginning, the smaller as well as cheaper to manufacture and operate is, but still allows excellent satin results.
  • the 2 x 5-roll calender delivers practically the same Calendering results like a conventional 12-roll calender, the previously used for the production of gravure printing and other high quality papers considered necessary has been.
  • the division into two stacks has the other Advantage that the dependence of the line load on the roll weight is lower, i.e. in the uppermost gap with a much higher line load than before can be worked.
  • 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 .
  • top and / or bottom roller deflection are controllable. In this way, the Compression equalized across the entire width of the rollers will.
  • 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 in the consists essentially of fiber-reinforced epoxy resin.
  • Such a plastic cover has a service life of at least twelve weeks.
  • the stacks arranged in-line of a paper machine or coating machine are plastic covers that are for the sake of higher Compressive stress are desired, particularly suitable because - in contrast to covers made of fiber material - are much less sensitive to markings and are therefore rarely removed and ground have to.
  • plastic covers that are for the sake of higher Compressive stress are desired, particularly suitable because - in contrast to covers made of fiber material - are much less sensitive to markings and are therefore rarely removed and ground have to.
  • they have two stacks existing calenders have the further advantage that they are more suitable in-line because the current Paper web in each stack only by a smaller one Number of columns must be passed.
  • all rollers have a drive.
  • the paper web can therefore be drawn in with the calender running because all the reels are at the same speed can be brought before the column getting closed.
  • the illustrated calender 1 has two roll stacks 3 and 4, each consisting of five rollers.
  • the first stack 3 has a heatable deflection controllable hard top roller 5, a soft roller 6, one heated hard roller 7, a soft roller 8 and one Heated deflection-controllable hard lower roller 9 on.
  • the second stack 4 has a heatable, deflection-controllable hard top roller 10, a soft roller 11, a heatable hard roller 12, a soft roller 13 and a heated deflection controllable hard Bottom roller 14 on.
  • This way, in the first Stack 3 four working columns 15 to 18 and in the second Stack 4 four working columns 19 through 22, each limited by a hard roller and a soft roller are.
  • a paper web 23 is fed from a paper machine 24, runs from top to bottom under Guide rollers 25 the working column of the first Stack 3 and then the working column of the second Stack 4, whereupon they in a winding device 26th is wound up.
  • the paper web lies in the first stack 3 with one side and in the second stack 4 with the other side on the hard rollers, so that on both sides the desired surface structure, for example Gloss or smoothness.
  • each of the rollers 5 to 14 has its own Drive 27. This allows the Paper web 23 during operation.
  • Each of the soft ones Rollers 6, 8, 11 and 13 have a cover 28 Plastic, especially fiber-reinforced epoxy resin. This reference is less sensitive to marking than one Cover made of fiber material, so that for in-line operation much longer downtimes can be achieved. In addition, the cover with higher compressive stress be charged. It is also resistant to higher temperatures more durable than paper. As an example of this a cover from "TopTec 4" from Scapa Kern, Wimpassing / Austria called.
  • the force P is used to ensure that the mean compressive stress p in the working gaps 15 to 22, or at least in the lowest gap, is between 45 and 60 N / mm 2 .
  • the heater H it is ensured that the surface temperature of the heated rollers 5, 7, 9, 10, 12, 14 is between 100 and 150 ° C.
  • the diameter of the rollers and the elasticity of the covering 28 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 .
  • the printability of natural and light-coated papers is not necessarily related to the gloss or smoothness of the paper web, but rather to the compression or its reciprocal bulk (in cm 3 / g).
  • the measure of the printability in the gravure printing process is determined by the number of "missing dots" (missing halftone dots in the quarter and halftone range). The best results in this regard can be obtained by ensuring that the above-mentioned limits are observed in all working columns.
  • 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.
  • each Stack 3 4 the top roller 5, 10, the bottom roller 9, 14 and the center roll 7, 12 are designed as hard rolls are that cooperate with soft rollers 6, 8, 11, 13. But there is also the possibility of the three train the first rolls as soft rolls and the middle rolls as hard, preferably heatable rolls 6, 8, 11 and 13 to be provided.

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  • Paper (AREA)

Claims (12)

  1. Calandre destinée au traitement des deux faces d'une bande de papier, notamment à la fabrication de papier pouvant être imprimé en héliogravure, avec une pile de cylindres pouvant être chargée à partir de l'extrémité, comportant des cylindres durs et des cylindres souples, ainsi que des emprises de travail qui sont respectivement formées entre un cylindre dur et un cylindre souple, une partie des cylindres pouvant être chauffée, caractérisée en ce qu'il est prévu deux piles identiques (3, 4) comportant chacune 5 cylindres (5 à 9 ; 10 à 14), et en ce que la condition s'appliquant à au moins une emprise de travail (15 à 22) est la suivante :
    a) la largeur de l'emprise est choisie de telle sorte que le temps de séjour (t) soit d'au moins 0,1 ms,
    b) le chauffage (H) d'un cylindre (5, 7, 9, 10, 12, 14) pouvant être chauffé délimitant l'emprise de travail est conçu pour une température de surface (T) de 100° C au moins, et
    c) la charge (P) des cylindres est conçue pour une contrainte de pression moyenne supérieure à 42 N/mm2 dans l'emprise de travail.
  2. Calandre selon la revendication 1, caractérisée en ce que la condition selon laquelle le temps de séjour (t) est de 0,9 ms maximum s'applique à l'une au moins des emprises de travail (15 à 22), et en ce que le chauffage (H) est conçu pour une température de surface de 150 °C maximum, et la charge (P) pour une contrainte de pression moyenne allant jusqu'à 60 N/mm2.
  3. Calandre selon la revendication 1 ou 2, caractérisée en ce que le temps de séjour (t) est de 0,2 à 0,5 ms, la température de surface (T) de 110 à 125 °C, et la contrainte de pression moyenne (p) de 45 à 55 N/mm2.
  4. Calandre selon l'une quelconque des revendications 1 à 3, caractérisée en ce que la condition s'applique à la majorité ou à la totalité des emprises de travail (15 à 22).
  5. Calandre selon l'une quelconque des revendications 1 à 4, caractérisée en ce que les cylindres supérieurs et/ou inférieurs (5, 9 ; 10, 14) peuvent être commandés en flexion.
  6. Calandre selon l'une quelconque des revendications 1 à 5, caractérisée en ce que les cylindres supérieurs et/ou inférieurs (5, 9 ; 10, 14) sont durs et peuvent être chauffés.
  7. Calandre selon l'une quelconque des revendications 1 à 6, caractérisée en ce que les cylindres souples (6, 8, 11, 13) sont pourvus d'un revêtement (28) en matière plastique.
  8. Calandre selon la revendication 7, caractérisée en ce que le revêtement (28) en matière plastique est conçu pour une charge admissible allant jusqu'à une contrainte de pression de 60 N/mm2.
  9. Calandre selon la revendication 7 ou 8, caractérisée en ce que le revêtement (28) en matière plastique est pour l'essentiel constitué de résine époxy renforcée par des fibres.
  10. Calandre selon l'une quelconque des revendications 1 à 9, caractérisée en ce que les piles sont disposées en ligne d'une machine à papier (24) ou d'une machine de couchage.
  11. Calandre selon l'une quelconque des revendications 1 à 10, caractérisée en ce que tous les cylindres (5 à 14) comportent un entraínement (27).
  12. Calandre selon l'une quelconque des revendications 1 à 11, caractérisée en ce que les piles (3, 4) sont recouvertes d'un capot de protection (40) qui réduit le rayonnement thermique.
EP96103279A 1995-03-09 1996-03-04 Calandre pour le traitement d'une bande de papier sur deux faces Expired - Lifetime EP0732447B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19508353A DE19508353A1 (de) 1995-03-09 1995-03-09 Kalander für die zweiseitige Behandlung einer Papierbahn
DE19508353 1995-03-09

Publications (3)

Publication Number Publication Date
EP0732447A1 EP0732447A1 (fr) 1996-09-18
EP0732447B1 true EP0732447B1 (fr) 1998-11-25
EP0732447B2 EP0732447B2 (fr) 2004-12-29

Family

ID=7756123

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96103279A Expired - Lifetime EP0732447B2 (fr) 1995-03-09 1996-03-04 Calandre pour le traitement d'une bande de papier sur deux faces

Country Status (9)

Country Link
US (1) US5669295A (fr)
EP (1) EP0732447B2 (fr)
JP (1) JP2612681B2 (fr)
KR (1) KR0160398B1 (fr)
AT (1) ATE173776T1 (fr)
CA (1) CA2169979C (fr)
DE (2) DE19508353A1 (fr)
EA (1) EA000317B1 (fr)
NO (1) NO307617B1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19519011C2 (de) * 1995-05-24 2001-02-01 Voith Sulzer Finishing Gmbh Kalander
DE19633671C2 (de) * 1996-08-21 1999-03-11 Voith Sulzer Finishing Gmbh Kalander
US7096779B2 (en) 1998-03-17 2006-08-29 Eduard Küsters Maschinenfabrik GmbH & Co. KG Calender arrangement
DE19811474A1 (de) * 1998-03-17 1999-09-23 Kuesters Eduard Maschf Kalanderanordnung
US20030126998A1 (en) * 1998-03-17 2003-07-10 Eduard Kusters Maschinenfabrik Gmbh & Co. Kg Calender arrangement
DE19940897C1 (de) * 1999-08-27 2000-11-09 Kuesters Beloit Gmbh & Co Kg Kalander
FI113072B (fi) * 1999-09-29 2004-02-27 Metso Paper Inc Menetelmä monitelakalanteria varten ja monitelakalanteri
FI107396B (fi) * 2000-01-25 2001-07-31 Metso Paper Inc Kalanteri
FI113288B (fi) * 2000-02-16 2004-03-31 Metso Paper Inc Menetelmä ja laite paperin kalanteroimiseksi
FI107947B (fi) * 2000-06-07 2001-10-31 Metso Paper Inc Menetelmä paperirainan profiloimiseksi
DE10052187B4 (de) * 2000-10-20 2013-12-24 Voith Patent Gmbh Verfahren zum Glätten einer Materialbahn sowie Kalander zur Durchführung des Verfahrens
KR100435867B1 (ko) * 2001-11-06 2004-06-12 한솔제지주식회사 종이 표면처리용 랩 칼렌더
JP2003153677A (ja) * 2001-11-20 2003-05-27 Japan Tobacco Inc 棒状物品の製造装置
FI118857B (fi) * 2003-01-02 2008-04-15 Metso Paper Inc Menetelmä kuiturainan kalanteroimiseksi ja kalanteri

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0732446A1 (fr) * 1995-03-09 1996-09-18 Voith Sulzer Finishing GmbH Calandre pour le traitement d'une bande de papier sur deux faces

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US440377A (en) * 1890-11-11 Paper-calendering machine
US628570A (en) * 1899-04-03 1899-07-11 Edward A Edmonds Apparatus for imparting water-finish to paper.
US715017A (en) * 1902-07-08 1902-12-02 Archibald Cameron Paper-calendering machine.
US1498237A (en) * 1921-11-02 1924-06-17 Daniels A Millard Machine for surface finishing paper and similar materials
US2300994A (en) * 1938-08-09 1942-11-03 Cons Water Power & Paper Co Calender for paper
US3153378A (en) * 1961-12-04 1964-10-20 Benjamin J H Nelson Method of calendering
US3270664A (en) * 1964-06-22 1966-09-06 Beloit Corp Calender stack
DE2919748C2 (de) * 1979-05-10 1983-08-18 Escher Wyss AG, Zürich Walzvorrichtung zum Walzen von bahnförmigen Materialien
FI62874C (fi) * 1979-10-15 1983-03-10 Valmet Oy Pappers kalander
FI72768B (fi) * 1984-11-30 1987-03-31 Waertsilae Oy Ab Nerkylning av pappersbana i superkalander.
FI71374C (fi) * 1984-12-31 1986-12-19 Valmet Oy Foerfarande och anordning vid kalandrering av en bana
DE3821027A1 (de) * 1988-06-22 1989-12-28 Kuesters Eduard Maschf Kalanderanordnung
DE4202047C2 (de) * 1992-01-27 1995-08-31 Escher Wyss Gmbh Verfahren zur Linienkraftkorrektur
US5237915A (en) * 1992-02-04 1993-08-24 The Mead Corporation Mixed roll calender

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0732446A1 (fr) * 1995-03-09 1996-09-18 Voith Sulzer Finishing GmbH Calandre pour le traitement d'une bande de papier sur deux faces

Also Published As

Publication number Publication date
ATE173776T1 (de) 1998-12-15
KR960034576A (ko) 1996-10-24
US5669295A (en) 1997-09-23
EP0732447B2 (fr) 2004-12-29
CA2169979A1 (fr) 1996-09-10
KR0160398B1 (ko) 1999-01-15
DE19508353A1 (de) 1996-09-12
JPH08246383A (ja) 1996-09-24
EP0732447A1 (fr) 1996-09-18
NO307617B1 (no) 2000-05-02
NO960976L (no) 1996-09-10
DE59600850D1 (de) 1999-01-07
NO960976D0 (no) 1996-03-08
JP2612681B2 (ja) 1997-05-21
EA199600009A2 (ru) 1996-10-01
EA199600009A3 (ru) 1996-12-30
EA000317B1 (ru) 1999-04-29
CA2169979C (fr) 1999-03-23

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