EP0451449A1 - Procédé de lissage d'une bande de papier ou carton enduite des deux côtés - Google Patents

Procédé de lissage d'une bande de papier ou carton enduite des deux côtés Download PDF

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Publication number
EP0451449A1
EP0451449A1 EP91101319A EP91101319A EP0451449A1 EP 0451449 A1 EP0451449 A1 EP 0451449A1 EP 91101319 A EP91101319 A EP 91101319A EP 91101319 A EP91101319 A EP 91101319A EP 0451449 A1 EP0451449 A1 EP 0451449A1
Authority
EP
European Patent Office
Prior art keywords
web
gap
sides
rollers
smoothness
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
EP91101319A
Other languages
German (de)
English (en)
Other versions
EP0451449B1 (fr
Inventor
Harald Hess
Rüdiger Dr. 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.)
Sulzer Escher Wyss GmbH
Original Assignee
Sulzer Escher Wyss GmbH
Escher Wyss 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
Application filed by Sulzer Escher Wyss GmbH, Escher Wyss GmbH filed Critical Sulzer Escher Wyss GmbH
Publication of EP0451449A1 publication Critical patent/EP0451449A1/fr
Application granted granted Critical
Publication of EP0451449B1 publication Critical patent/EP0451449B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Definitions

  • the invention relates to a method of the type described in the preamble of claim 1.
  • Smoothing the smoothing treatment, is usually the last stage in the manufacturing process of paper or cardboard.
  • Devices such as so-called smoothing units or super calenders are used for this. They are used for two-sided or even one-sided smoothness treatment of the paper or cardboard web.
  • smoothing units with so-called hard and soft treatment gaps, with the hard surfaces that delimit the treatment gap on both sides being practically rigid, and with the soft ones a resiliently elastic surface is used on at least one side of the gap.
  • the hard surfaces are often heated.
  • a device with soft treatment gaps is, for example, the applicant's NipcoMat smoothing unit (trademark). This can be provided with one or more treatment columns.
  • the surfaces delimiting the treatment gaps are usually formed by rolling with metal-hard or resiliently coated surfaces.
  • a noted disadvantage of this method is that, particularly in the case of the high-gloss grades of paper or cardboard, the contact with hot, hard surfaces of the heated rollers achieved high gloss value of one side in the subsequent gap when contact with rollers with a resilient elastic surface is reduced again.
  • the invention is intended to offer a method for smoothing - in particular a paper or cardboard web coated on both sides - in which a smoothness increase and the highest possible level of gloss can be achieved for the finished product, in the same way on the two treated sides of the web .
  • the device provided for carrying out is intended to offer possibilities for the respective optimization of the process also during operation.
  • a surface quality that already produces is produced in the first - ⁇ soft '' gap when using surfaces coated with a material having a comparatively high modulus of elasticity and using a high treatment pressure on both sides of the web has remarkable values both in terms of smoothness and gloss.
  • the dynamic modulus of elasticity of the elastic material should advantageously be in the range between 2000 and 10,000 N / mm2 in the radial direction.
  • the smoothness and gloss values achieved in the first saplt are increased considerably and remain on the finished product.
  • the web has the same smoothness and gloss on both sides.
  • a paper or cardboard web 1 to be treated on both sides A and B and coated on both sides is passed through a first gap 2 at a corresponding running speed.
  • the gap 2 is formed between two rotatable rollers 4 and 6, which have flexible cylindrical surfaces 5 and 7, respectively. These are surfaces of an elastically flexible material layer which, in order to be able to work in the gap 2 with a correspondingly high surface pressure, has a high modulus of elasticity. For the same reason, it is advantageous if the smallest possible diameter is selected for the rollers 4 and 6.
  • the surfaces 5 and 7 can be adjusted perpendicular to the web 1 to generate the pressure in the gap 2.
  • at least one of the rollers 4 and 6 can be equipped with pressure-adjustable support elements 12, e.g. with the well-known Nipco elements.
  • the advantage of the first "soft" gap is the even compression of the paper web between the resilient, elastic coatings of the rollers. As a result, there is no overpressure at points with a higher basis weight of the web.
  • the web 1 treated in the first gap 1 is driven through a further gap 3 downstream in the running direction of the web at the same running speed as before.
  • This gap 3 is formed between two rotatable rollers 8 and 10, which are made, for example, of cast iron and have a hard cylindrical surface 8 and 11, respectively.
  • pressure and heat are applied to both sides A and B of the web.
  • the heat transfer surface is advantageously kept as large as possible by selecting the largest possible roller diameter.
  • At least one of the rollers 8 and 10 can be provided with known Nipco support elements 12.
  • the other roller could, for example, be a conventional, adjustable thermal roller.
  • the rollers 8 and 10 can thus be heated and regulated.
  • the Nipco support elements can also advantageously be used in a known manner, which are fed in a regulatable manner for the case with heat-carrying pressure medium.
  • controllability of the heating enables the method to be adapted to achieve the desired treatment results: e.g. an asymmetrical heating can reduce the smoothness and glossy two-sidedness of the two sides A and B of the web 1.
  • the second stage of smoothing in the gap 3 brings about an increase in the quality of the web 1 already achieved in the previous gap 2 on the two sides A and B. After this treatment, higher values in terms of smoothness and gloss than in each case are found reached in gap 2 and remain in the end product.
  • the controllability of the heating should also offer correction options in zone-by-zone heating across the width of the web.
  • the pressure in the second gap 3 should be as low as possible in order to avoid local compression of the web. However, a relatively high temperature should be used for this. Therefore, as mentioned above, a large heat transfer area in the gap 3 must also be provided. In addition to the smoothness, large roller surfaces promote the gloss in particular.
  • the invention does not exclude the cases where more than one column of the type described in column 2 or 3 are arranged in succession. In any case, the "soft" column (type gap 2) must be arranged first, then the "hard” column (type gap 3).
  • a smoothing unit according to the invention is shown, in which the surfaces delimiting the respective gap 2 or 3 are formed by circumferential bands guided through the gap.
  • the web 1 is guided through the first gap 2 between surfaces of the belts 13 and 14 which run through the gap and rotate during operation. They are resilient, at least on their side facing the web 1. Due to the elastic flexibility of the band 13 or 14, local overpressures in the web are largely avoided.
  • Both belts 13 and 14 can be of equivalent design and can be driven at the same speed.
  • This gap 2 primarily pressure is applied to the web. The pressure is generated with pressure-adjustable support elements 12.
  • the web 1 is then guided from the gap 2 through the gap 3 arranged downstream in the running direction.
  • the web 1 is guided between surfaces of the steel strips 15 and 16 which are guided through the gap 3 and have hard surfaces rotating during operation.
  • the running speed of the web 1 in the gap 3, which is given by the rotational speed of the belts 15 and 16, is the same as that of the web in the preceding gap 2.
  • the pressure is generated via adjustable support elements 12, the forces of which act on the belts.
  • the Nipco elements already mentioned are used with advantage.
  • the belts 15 and 16 are also heated via the support elements 12, which are fed with heat-carrying medium for this purpose. Heating can also be imagined with other means, e.g. with inductive heating.
  • This gap 3 can also be made longer in the running direction.
  • the "long" gap 3 results in a longer dwell time for the web 1 as it passes through the gap. This makes it possible to drive in the gap with low pressure, which further reduces the risk of local overpressures in this gap.
  • the selection of low pressures is also possible because the Heat transfer surface results in an advantageous heat transfer to the web 1, whereby the smoothness and in particular the gloss formation are favored. There is no loss of gloss in this gap 3.
  • Different treatment of the two web sides A / B is also possible here by asymmetrical heating of the belts 15 and 16.
  • FIG. 3 shows a third example of a smoothing unit for carrying out the method. It may be advantageous to have the first gap 2 between two resiliently elastically coated rollers 4 and 6, as described in FIG. 1, and the second gap 3 between two circumferential surfaces, which have a hard, practically unyielding surface, as in the case of those in FIG. 2 described tapes 15, 16 to form.
  • the first gap 2 could be formed between resiliently coated strips; the second gap 3 would - as shown in Fig. 1 - between two heated, hard rollers of large diameter. This variant was not shown in the drawing because it is easy to imagine.
  • the process is not limited to the smoothing of paper or cardboard webs coated on both sides. It is possible, according to the invention, to smooth even uncoated or unilaterally coated webs with good results.

Landscapes

  • Paper (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP91101319A 1990-04-09 1991-02-01 Procédé de lissage d'une bande de papier ou carton enduite des deux côtés Expired - Lifetime EP0451449B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4011394 1990-04-09
DE4011394A DE4011394C1 (fr) 1990-04-09 1990-04-09

Publications (2)

Publication Number Publication Date
EP0451449A1 true EP0451449A1 (fr) 1991-10-16
EP0451449B1 EP0451449B1 (fr) 1994-09-14

Family

ID=6404035

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91101319A Expired - Lifetime EP0451449B1 (fr) 1990-04-09 1991-02-01 Procédé de lissage d'une bande de papier ou carton enduite des deux côtés

Country Status (6)

Country Link
US (1) US5137678A (fr)
EP (1) EP0451449B1 (fr)
AT (1) ATE111542T1 (fr)
CA (1) CA2039956C (fr)
DE (2) DE4011394C1 (fr)
FI (1) FI97400C (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1225274A3 (fr) * 2001-01-12 2003-02-12 Voith Paper Patent GmbH Procédé pour le traitement d' une bande de matière et calandre
EP1336686A1 (fr) * 2002-02-14 2003-08-20 Voith Paper Patent GmbH Aménagement de calandre à pinçage prolongé et procédé de satinage d'une bande de papier ou de carton
EP1304413A3 (fr) * 2001-10-18 2004-05-12 Voith Paper Patent GmbH Section de séchage et un appareil de lissage pour la section de séchage

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4030537C1 (fr) * 1990-09-27 1991-10-10 Kleinewefers Gmbh, 4150 Krefeld, De
DE4124560A1 (de) * 1991-07-24 1993-01-28 Wacker Chemie Gmbh Beschichtungsmittel zur herstellung von wasserdichten, dampfdurchlaessigen und flammverzoegernden beschichtungen
DE4322644C1 (de) * 1993-07-07 1994-09-29 Billhofer Maschf Gmbh Vorrichtung zum Auftragen wachshaltiger Dispersionen
US5435957A (en) * 1993-09-03 1995-07-25 Pall Corporation Method of preparing a support material for use with a filtration medium
FI95062C (fi) * 1993-12-29 1995-12-11 Valmet Paper Machinery Inc 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
FI102304B1 (fi) 1997-04-02 1998-11-13 Valmet Corp Kalanterointimenetelmä ja menetelmää soveltava kalanteri
SE509440C2 (sv) * 1997-05-14 1999-01-25 Tetra Laval Holdings & Finance Sätt att framställa ett tryckfärgsdekorerat förpackningmaterial, speciellt för aseptiska förpackningar, samt förpackningsbehållare därav
US6036909A (en) * 1997-11-25 2000-03-14 Kimberly-Clark Worldwide, Inc. Method for embossing web material using an extended nip
DE19757474A1 (de) * 1997-12-23 1999-06-24 Voith Sulzer Papiertech Patent Papierkalander
DE19821820A1 (de) * 1998-05-15 1999-11-18 Voith Sulzer Papiertech Patent Vorrichtung zur Oberflächenbehandlung einer laufenden Materialbahn, insbesondere aus Karton
DE19828156A1 (de) * 1998-06-24 1999-12-30 Voith Sulzer Papiertech Patent Vorrichtung zum Glätten einer Materialbahn
US6183601B1 (en) * 1999-02-03 2001-02-06 Kimberly-Clark Worldwide, Inc. Method of calendering a sheet material web carried by a fabric
FI112965B (fi) * 1999-11-05 2004-02-13 Metso Paper Inc Kalanterointisovitelma paperikonetta varten
FI116402B (fi) * 2001-04-17 2005-11-15 Metso Paper Inc Kalanterointimenetelmä
FI110883B (fi) * 2001-12-12 2003-04-15 Metso Paper Inc Menetelmä kartonkirainan esikalanteroimiseksi
DE10255422B4 (de) * 2002-11-28 2004-10-28 Voith Paper Patent Gmbh Verfahren und Vorrichtung zum Behandeln einer Papier- oder Kartonbahn

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3067718A (en) * 1958-11-05 1962-12-11 Johannes Zimmer Maschf Apparatus for treating sheet materials
US3266414A (en) * 1962-05-30 1966-08-16 Karlstads Mek Ab Calenders to overcome barring
DE2815966A1 (de) * 1977-05-18 1978-11-23 Giuseppe Caminiti Maschinenkalander mit veraenderlicher walzenanzahl
US4670102A (en) * 1986-01-08 1987-06-02 Westvaco Corporation Tandem calender
GB2220011A (en) * 1988-06-22 1989-12-28 Kuesters Eduard Maschf Calender arrangement
EP0361402A1 (fr) * 1988-09-29 1990-04-04 Jujo Paper Co., Ltd. Dispositif de calandrage pour procédé de fabrication du papier

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3996328A (en) * 1970-04-01 1976-12-07 Congoleum Corporation Method for finishing resinous surface coverings
DE2230139B2 (de) * 1971-06-28 1980-01-31 Escher Wyss Ag, Zuerich (Schweiz) Walze mit Durchbiegungsausgleich für die Druckbehandlung von bahnförmigen Materialien
CH556946A (de) * 1972-10-26 1974-12-13 Escher Wyss Ag Druckwalze.
DE3131799C2 (de) * 1981-08-12 1984-08-30 Kleinewefers Gmbh, 4150 Krefeld Walzenpresse für Papier- und ähnliche Bahnen, insbesondere Kalander
DE3586190T2 (de) * 1984-09-13 1992-12-03 Stone Consolidated Inc Verfahren zur herstellung von papier mit hoher dichte.
DE3815463A1 (de) * 1988-05-06 1989-11-16 Kuesters Eduard Maschf Verfahren zur erzeugung von glaette und glanz auf einer papierbahn und entsprechende kalanderanordnung
DE3920204A1 (de) * 1988-10-31 1990-05-10 Escher Wyss Gmbh Verfahren zum glaetten einer papier- oder kartonbahn
US4973441A (en) * 1989-07-26 1990-11-27 Beloit Corporation Method of manufacturing a compressibility gradient in paper

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3067718A (en) * 1958-11-05 1962-12-11 Johannes Zimmer Maschf Apparatus for treating sheet materials
US3266414A (en) * 1962-05-30 1966-08-16 Karlstads Mek Ab Calenders to overcome barring
DE2815966A1 (de) * 1977-05-18 1978-11-23 Giuseppe Caminiti Maschinenkalander mit veraenderlicher walzenanzahl
US4670102A (en) * 1986-01-08 1987-06-02 Westvaco Corporation Tandem calender
GB2220011A (en) * 1988-06-22 1989-12-28 Kuesters Eduard Maschf Calender arrangement
EP0361402A1 (fr) * 1988-09-29 1990-04-04 Jujo Paper Co., Ltd. Dispositif de calandrage pour procédé de fabrication du papier

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1225274A3 (fr) * 2001-01-12 2003-02-12 Voith Paper Patent GmbH Procédé pour le traitement d' une bande de matière et calandre
EP1304413A3 (fr) * 2001-10-18 2004-05-12 Voith Paper Patent GmbH Section de séchage et un appareil de lissage pour la section de séchage
US7114268B2 (en) 2001-10-18 2006-10-03 Voith Paper Patent Gmbh Drying section and a smoothing apparatus for such a drying section
EP1336686A1 (fr) * 2002-02-14 2003-08-20 Voith Paper Patent GmbH Aménagement de calandre à pinçage prolongé et procédé de satinage d'une bande de papier ou de carton
US6989077B2 (en) 2002-02-14 2006-01-24 Voith Paper Patent Gmbh Wide nip calender arrangement and process for glazing a paper or cardboard web

Also Published As

Publication number Publication date
FI97400B (fi) 1996-08-30
US5137678A (en) 1992-08-11
FI97400C (fi) 1996-12-10
DE4011394C1 (fr) 1991-11-28
FI911668L (fi) 1991-10-10
EP0451449B1 (fr) 1994-09-14
CA2039956C (fr) 1995-04-25
FI911668A0 (fi) 1991-04-08
ATE111542T1 (de) 1994-09-15
DE59102892D1 (de) 1994-10-20
CA2039956A1 (fr) 1991-10-10

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