EP1336686B1 - Aménagement de calandre à pinçage prolongé et procédé de satinage d'une bande de papier ou de carton - Google Patents

Aménagement de calandre à pinçage prolongé et procédé de satinage d'une bande de papier ou de carton Download PDF

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Publication number
EP1336686B1
EP1336686B1 EP03001744A EP03001744A EP1336686B1 EP 1336686 B1 EP1336686 B1 EP 1336686B1 EP 03001744 A EP03001744 A EP 03001744A EP 03001744 A EP03001744 A EP 03001744A EP 1336686 B1 EP1336686 B1 EP 1336686B1
Authority
EP
European Patent Office
Prior art keywords
paper
nip
board web
calibration
web
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 - Fee Related
Application number
EP03001744A
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German (de)
English (en)
Other versions
EP1336686B2 (fr
EP1336686A1 (fr
Inventor
Rüdiger KURTZ
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
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Filing date
Publication date
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Application filed by Voith Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1336686A1 publication Critical patent/EP1336686A1/fr
Publication of EP1336686B1 publication Critical patent/EP1336686B1/fr
Application granted granted Critical
Publication of EP1336686B2 publication Critical patent/EP1336686B2/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
    • D21G1/0073—Accessories for calenders
    • D21G1/0093—Web conditioning devices

Definitions

  • the invention relates to a wide-nip calendering arrangement for calendering a paper or board web having at least one nip formed between a hard counter-pressure surface and a circumferential jacket loaded by a support shoe assembly towards the counter-pressure surface and a calibration nip. Furthermore, the invention relates to a method for calendering a paper or board web, wherein the paper or board web is passed through a nip formed between a hard counter-pressure surface and a circumferential shell, which is loaded by a support shoe assembly in the direction of the counter-pressure surface is, and the paper or board web is calibrated.
  • the paper or board web is thicker at one end (seen in the width direction) than at the other end, then with several 100 or even several thousand turns of a paper or board web roll such significant differences in diameter that this paper or cardboard web roll is no longer can be well rolled and processed.
  • a paper or board web like a Breitnip press in which the paper or board web over a predetermined distance away with low to elevated pressure and optionally also with an elevated temperature with the aim of the lowest possible volume loss during compression can be applied.
  • the broad-nip press forms a nip in which a circumferential mantle faces a counter-pressure surface.
  • the jacket is pressed by a support shoe assembly against the counter-pressure surface, so that a correspondingly large or small pressure is exerted on the lying between the shell and the counter-pressure surface paper or board web.
  • the broad nip has the advantage that the paper or board web is pressurized over a longer period of time.
  • the compressive stresses in the nip are relatively small, so that a volume gentle satin finish is possible.
  • EP 0 451 449 A1 shows a method for smoothing a paper or board web coated on both sides.
  • the web is first passed through a nip, which is formed by two soft rolls or two soft bands, which are pressed against each other. Thereafter, the web is passed through a nip formed by two hard rolls or two hard belts which are pressed against each other. In the first nip the web is acted upon primarily with a relatively high pressure. In the second nip, the smoothness and gloss values, which have been achieved in the first nip, still increased.
  • EP 0 609 544 A1 shows a method and a device for increasing the gloss and / or smoothness of a material web, with the aid of which moisture is applied to the web, namely so close to a nip, that the moisture only in a certain depth in the railway has penetrated when the web passes through the nip.
  • DE 28 23 738 A1 describes a device for leveling the surface of a paper web in the form of a calender, in which hard rollers and elastic rollers alternate with each other.
  • the invention has for its object to satinize a paper or board web without creating major problems in the further processing.
  • the calibration nip is formed by two hard rolls.
  • the two hard rolls are arranged in a calender or calender, as is known per se.
  • the hard rollers ie rollers made of steel or cast without an elastic surface covering, are able to balance the thickness of the paper or board web across its width. If it turns out that one calibration nip is not enough, it may be necessary to switch several calibration nips one after the other. These Kalibri mecanicsnips can then be arranged in a single stack of rollers, so that you can take advantage of multiple rolls twice.
  • the counter-pressure surface is formed by the surface of a hard roller. Since the jacket rotates, it is favorable, although the counterpressure surface can circulate. This can be most easily realized by the fact that the counter-pressure surface is formed by the peripheral surface of a roller. Since the smoothness of this roller imprints in the paper or board web, a particularly smooth roller is preferable here. This smoothness is most easily produced on a hard roll, that is, as stated above, on a roll of steel or cast iron.
  • the extended nip on a heater. If the paper or board web in the nip is subjected not only to an increased pressure but also to an increased temperature, then the calendering results can be improved. In particular, the paper or board web can obtain increased smoothness and / or improved gloss.
  • the supply of heat in the nip makes it possible to apply the paper or board web virtually during its entire run at elevated temperature. This is cheaper than if you only heated the paper or board web before entering the nip.
  • two wide nips are arranged one behind the other and in front of the calibration nip, wherein first the one and then the other side of the paper or board web comes into contact with a counter-pressure surface.
  • a counter-pressure surface it is possible to equalize both sides of the paper or board web, so to provide both sides of the paper or board web with a smoothness, as dictated by the counter-pressure surface.
  • a humidifying device is arranged in front of each broad nip. In this way, the moisture losses that occur in each wide nip can be compensated in advance, so to speak.
  • the paper or board web thus remains easy to handle even after passing through the wide nips.
  • a quantity of moisture emitted by the moistening device and the heating device as well as the length of the broad nip are coordinated so that the paper or board web in the calibration nip has at least the same moisture as before the moistening device.
  • the moisture losses experienced by the paper or board web in the nip are known or can be determined or calculated beforehand. If you now ensure that the moisture that is lost in the extended nip from the paper or board web, is applied before, then you get not only an improved calendering the paper or board web, so an improved smoothness of the surface, but the paper or cardboard web itself does not dry out, which facilitates further handling, especially when winding.
  • a winding device is arranged after the Kalibri für snip.
  • This embodiment has the advantage that a paper or board web is wound up shortly after it has been brought across its width to the same thickness.
  • a paper or cardboard web roll formed in this way is of high quality and can be processed further well later.
  • the object is achieved in a method of the type mentioned above in that the paper or board web is moistened before entering the broad nip and is calibrated after leaving the broad nip.
  • the paper or board web is heated in the nip. Heating is one way to further improve the calendering results. Because moisture is applied in front of the nipple, you can do it Ensure that the drying of the paper or board web is prevented or at least limited so that no negative consequences arise from it.
  • the paper or board web can be calibrated with a relatively high moisture content, which facilitates the calibration.
  • the paper or board web is wound up after the calibration.
  • the paper or board web is wound immediately after calibration, there is virtually no time available for the paper or board web to be converted back to a nonuniform thickness distribution under the influence of environmental conditions such as environmental humidity. This gives a very uniform winding roll, which can be further processed well later.
  • the first broad-nip press 4 has a hard roller 6 with a surface 7 made of steel or cast, which cooperates with a circumferential jacket 8, which is pressed under the action of a support shoe assembly 9 against the roller 6.
  • the support shoe assembly 9 has a concave pressure surface 10 whose curvature is adapted to the curvature of the surface 7 of the roller 6.
  • the jacket 8 is guided via support rollers 11, 12, 13, of which the support roller 12 may have a drive in order to drive the jacket in the direction of an arrow 15.
  • the jacket 8 may have a certain rigidity, so that it rotates in the manner of a roller. But it can also be very “soft” and elastic, so that it practically forms only a band without own form stability.
  • the jacket 8 and the roller 6 together form a broad nip 16.
  • the nip 16 has a length in the range of 50 to 250 mm. Accordingly, the paper or board web 2 passing through the broad nip 16 is subjected to increased pressure during passage through a predetermined period of time. The period is much longer than when passing through a nip formed between two rolls.
  • the roller 6 is provided with a heating device 17, which is shown here only schematically.
  • the heater 17 may be configured to supply the roller 6 with a heat carrier in the form of hot water, hot oil, or hot steam. But it is also possible that the heater 17 only heats the surface of the roller 6, for example by infrared radiation or by eddy currents.
  • a moistening device 18 Before entering the nip 16, a moistening device 18 is arranged, which applies moisture to that side of the paper or board web 2 which rests in the extended nip 16 on the surface 7 of the roller 6. It is now possible to control the application of moisture by the moistening device 18 so that the paper or board web after leaving the broad nip 16 has at least the same moisture as before the moistening at the moistening device 18, i. You can vorkompensieren the occurring in the extended nip 16 moisture losses. This precompensation also has the advantage that the surface of the paper or board web 2 can be better smoothed because it is moister.
  • the second wide-nip press 5 is basically constructed in the same way as the first wide-nip press 4. Their elements are therefore provided with the same but painted reference numerals. The only difference is the fact that the arrangement of roller 6 'and jacket 8' is reversed, so that now the other side of the paper or board web 2 on the roller 6 'is present, while the previously on the surface 7 of the roller 6 adjacent side of the paper or board web 2 on the jacket 8 'is present.
  • a moistening device 18 ' is provided in front of the inlet into the extended nip 16', wherein this moistening device 18 'again applies moisture to the side of the paper or board web 2, which later bears against the roller 6'.
  • the second wide-nip press 5 can also be omitted if one wants to provide only one side of the paper or board web 2 with increased smoothness. In this case, the other side of the paper or board web 2 is smoothed only by the jacket 8, which is sufficient in many cases.
  • a Kalibri fürimisnip 19 is disposed behind the wide nip 16 and behind the nip 16 'of the second wide-nip press 5, which is formed by two hard rollers 20, 21, each of which has a drive 22, 23.
  • the two rollers 20, 21 are in this case arranged in the stoma of a calender, not shown. They are preferably formed as deflection rolls whose circumferential sheaths are also hard, i. are made of steel.
  • the paper or board web After passing through the calibration die 19, the paper or board web has a thickness that is substantially uniform across the width of the paper or board web (perpendicular to the plane of the drawing in the figure).
  • the uniformity of the thickness of the paper or board web 2 after passing through the Kalibri für snips 19 is large enough to cause no interference during winding to paper or cardboard web roll 25.
  • the Paper or cardboard web roll 25 can therefore form very uniform. It receives the desired circular cylinder shape.
  • the paper or board web 2 originates directly from the paper machine 3. But it can also come from another upstream source, such as a settlement.
  • counter-pressure surface is also a circumferential hard belt into consideration, which is supported on the opposite side of the shell by a support shoe assembly.

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  • Paper (AREA)

Claims (12)

  1. Agencement de calandre à large ligne de contact, pour satiner une nappe de papier ou de carton (2), comprenant au moins une large ligne de contact (16, 16') qui est formée entre une surface de contre-pression dure (7, 7') et une enveloppe périphérique (8, 8') qui est sollicitée dans la direction de la surface de contre-pression (7, 7') par un agencement de sabot de support (9, 9'), et une ligne de contact de calibrage, un dispositif d'humidification (18, 18') étant disposé avant l'entrée de la large ligne de contact (16, 16') et la ligne de contact de calibrage (19) étant disposée derrière la sortie de la large ligne de contact (16, 16').
  2. Agencement selon la revendication 1, caractérisé en ce que la ligne de contact de calibrage (19) est formée par deux rouleaux durs (20, 21).
  3. Agencement selon la revendication 1 ou 2, caractérisé en ce que la surface de contre-pression est formée par la surface (7, 7') d'un rouleau dur (6, 6').
  4. Agencement selon la revendication 3, caractérisé en ce que la large ligne de contact (16, 16') présente un dispositif de chauffage (17, 17').
  5. Agencement selon l'une quelconque des revendications 1 à 4, caractérisé en ce que deux larges lignes de contact (16, 16') sont disposées l'une derrière l'autre et avant la ligne de contact de calibrage (19), d'abord un côté et ensuite l'autre côté de la nappe de papier ou de carton (2) venant en contact avec une surface de contre-pression (7, 7').
  6. Agencement selon la revendication 5, caractérisé en ce qu'un dispositif d'humidification (18, 18') est disposé avant chaque large ligne de contact (16, 16').
  7. Agencement selon l'une quelconque des revendications 4 à 6, caractérisé en ce qu'une quantité d'humidité fournie par le dispositif d'humidification (18, 18') et le dispositif de chauffage (17, 17') ainsi que la longueur de la large ligne de contact (16, 16') sont adaptés les uns aux autres de telle sorte que la nappe de papier ou de carton (2) présente dans la ligne de contact de calibrage (19) au moins la même humidité qu'avant le dispositif d'humidification (18).
  8. Agencement selon l'une quelconque des revendications 1 à 7, caractérisé en ce qu'un dispositif d'enroulement (24) est disposé à la suite de la ligne de contact de calibrage (19).
  9. Procédé de satinage d'une nappe de papier ou de carton (2), dans lequel la nappe de papier ou de carton (2) est guidée à travers une large ligne de contact (16, 16'), qui est formée entre une surface de contre-pression dure (7, 7') et une enveloppe périphérique (8, 8') qui est sollicitée dans la direction de la surface de contre-pression (7, 7') par un agencement de sabot de support (9, 9'), et la nappe de papier ou de carton (2) est calibrée, la nappe de papier ou de carton (2) étant humidifiée avant son entrée dans la large ligne de contact (16, 16') et étant calibrée à sa sortie de la large ligne de contact (16, 16').
  10. Procédé selon la revendication 9, caractérisé en ce que la nappe de papier ou de carton (2) est chauffée dans la large ligne de contact (16, 16').
  11. Procédé selon la revendication 9 ou 10, caractérisé en ce qu'avant l'entrée dans la large ligne de contact (16, 16'), on applique au moins autant d'humidité qu'il en est perdu à nouveau hors de la nappe de papier ou de carton (2) jusqu'à l'atteinte d'une ligne de contact de calibrage (19).
  12. Procédé selon l'une quelconque des revendications 9 à 11, caractérisé en ce que la nappe de papier ou de carton (2) est enroulée suite au calibrage.
EP03001744A 2002-02-14 2003-01-28 Aménagement de calandre à pinçage prolongé et procédé de satinage d'une bande de papier ou de carton Expired - Fee Related EP1336686B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10206333 2002-02-14
DE10206333A DE10206333C1 (de) 2002-02-14 2002-02-14 Breitnip-Kalander-Anordnung und Verfahren zum Satinieren einer Papier- oder Karrtonbahn

Publications (3)

Publication Number Publication Date
EP1336686A1 EP1336686A1 (fr) 2003-08-20
EP1336686B1 true EP1336686B1 (fr) 2006-06-14
EP1336686B2 EP1336686B2 (fr) 2010-08-11

Family

ID=7713825

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03001744A Expired - Fee Related EP1336686B2 (fr) 2002-02-14 2003-01-28 Aménagement de calandre à pinçage prolongé et procédé de satinage d'une bande de papier ou de carton

Country Status (4)

Country Link
US (1) US6989077B2 (fr)
EP (1) EP1336686B2 (fr)
CA (1) CA2418880C (fr)
DE (2) DE10206333C1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10354581C5 (de) * 2003-11-21 2011-08-11 Voith Patent GmbH, 89522 Breitnip-Kalanderanordnung
DE102004020069C5 (de) * 2004-04-24 2013-12-05 Voith Patent Gmbh Verfahren zum Satinieren einer Papierbahn
DE102004062618A1 (de) 2004-12-24 2006-07-06 Voith Paper Patent Gmbh Glättanordnung
DE102005013627A1 (de) * 2005-03-24 2006-09-28 Voith Paper Patent Gmbh Schießverfahren
DE102007011536A1 (de) * 2007-03-09 2008-09-11 Voith Patent Gmbh Kalander
DE102007016718A1 (de) 2007-04-07 2008-10-09 Voith Patent Gmbh Maschine zur Herstellung einer Faserstoffbahn

Family Cites Families (20)

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Publication number Priority date Publication date Assignee Title
DE2823738C2 (de) 1978-05-31 1985-11-07 Kleinewefers Gmbh, 4150 Krefeld Verfahren zum Einebnen (Glätten) einer Papierbahn
DE3920204A1 (de) * 1988-10-31 1990-05-10 Escher Wyss Gmbh Verfahren zum glaetten einer papier- oder kartonbahn
ATE93913T1 (de) † 1988-12-22 1993-09-15 Schoeller Felix Jun Papier Vorrichtung und verfahren zum glaetten und kalibrieren von papier, insbesondere von fotografischen basispapieren.
JP2645887B2 (ja) * 1989-04-06 1997-08-25 富士写真フイルム株式会社 写真印画紙用支持体
DE4011394C1 (fr) * 1990-04-09 1991-11-28 Sulzer-Escher Wyss Gmbh, 7980 Ravensburg, De
DE4124940A1 (de) * 1991-07-27 1993-01-28 Kuesters Eduard Maschf Kalanderanordnung
DE4301023C3 (de) 1993-01-16 2001-07-26 V I B Systems Gmbh Vorrichtung zum Erhöhen von Glanz und/oder Glätte einer Papierbahn
FI95061C (fi) * 1993-03-08 1995-12-11 Valmet Paper Machinery Inc Menetelmä paperiradan kalanteroinnissa ja menetelmää soveltava kalanteri
SE503580C2 (sv) * 1995-03-16 1996-07-08 Korsnaes Ab Bestruken kartong för formade artiklar, produktionslinje för produktion av bestruken kartong, förfarande för framställning av bestruken kartong samt sätt att minska sprickbildningsbenägenheten vid vikning av en bestruken kartong
DE19545408C5 (de) † 1995-12-06 2004-01-22 Voith Sulzer Papiermaschinen Gmbh Verfahren zur Oberflächenveredelung einer Kartonbahn
FI104745B (fi) * 1998-06-25 2000-03-31 Valmet Corp Menetelmä ja sovitelma paperin ja kartongin kalanteroimiseksi
US6287424B1 (en) * 1998-09-22 2001-09-11 International Paper Company Method for finishing paperboard to achieve improved smoothness
SE9804346D0 (sv) * 1998-12-16 1998-12-16 Valmet Corp Method and apparatus for calendering paper
JP2000314941A (ja) * 1999-03-03 2000-11-14 Fuji Photo Film Co Ltd 記録材料用支持体の製造方法および記録材料用支持体
FI991108A (fi) * 1999-05-14 2000-11-15 Valmet Corp Menetelmä ja sovitelma kalanteroidun paperin tai kartongin valmistamis eksi
FI109040B (fi) 2000-01-28 2002-05-15 Metso Paper Inc Menetelmä paperi- tai kartonkirainan kalanteroinnissa ja kalanteri
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FI115405B (fi) † 2000-06-20 2005-04-29 Metso Paper Inc Kalanterointimenetelmä erityisesti esikalanterointia varten ja paperin käsittelylinja

Also Published As

Publication number Publication date
DE10206333C1 (de) 2003-07-31
US6989077B2 (en) 2006-01-24
US20030150339A1 (en) 2003-08-14
CA2418880C (fr) 2006-07-11
CA2418880A1 (fr) 2003-08-14
DE50303764D1 (de) 2006-07-27
EP1336686B2 (fr) 2010-08-11
EP1336686A1 (fr) 2003-08-20

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