EP2071076A1 - Dispositif de traitement de bande - Google Patents

Dispositif de traitement de bande Download PDF

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Publication number
EP2071076A1
EP2071076A1 EP08165676A EP08165676A EP2071076A1 EP 2071076 A1 EP2071076 A1 EP 2071076A1 EP 08165676 A EP08165676 A EP 08165676A EP 08165676 A EP08165676 A EP 08165676A EP 2071076 A1 EP2071076 A1 EP 2071076A1
Authority
EP
European Patent Office
Prior art keywords
web
roller
treatment device
belts
rollers
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
EP08165676A
Other languages
German (de)
English (en)
Other versions
EP2071076B1 (fr
Inventor
Jochen Autrata
Lars KRÜGER
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 Patent 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 Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP2071076A1 publication Critical patent/EP2071076A1/fr
Application granted granted Critical
Publication of EP2071076B1 publication Critical patent/EP2071076B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/0209—Wet presses with extended press nip

Definitions

  • the invention relates to a web treatment apparatus, in particular for a fibrous web, with at least one roller and at least two circulating flexible bands guided over partial circumferences of the roller.
  • the invention is described below by way of example for a calender for smoothing paper and board webs.
  • the invention is also conceivable, for example, in the press section of a paper machine or in the treatment of other materials such as films.
  • band is also to be understood as meaning a very flexible jacket of a shoe roller clamped at its axial ends
  • the state of the art is the DE 10157691 A1 to call. In this publication, two strips are passed over subsections of a roller.
  • a calender in which a web is smoothed between a roller and a circulating metal band which wraps around the roller over a partial circumference.
  • the summarized object of the invention is therefore to provide a web treatment device which acts on both sides of a web in the same way with pressure and heat in long treatment zones.
  • the object is achieved by a web treatment apparatus whose web running path of the web runs over a roller circumferential section between two belts and in which the web can be acted upon in this at least 80 mm long treatment zone with pressures between 0.1 and 100 MPa.
  • the web is guided between two, preferably similar bands.
  • materials with the same roughness are on both sides of the web, resulting in a uniform smoothness on both sides.
  • the belt tensions allow compressive forces in the region of the deflection of the belts, that is, on a roller peripheral section, which is referred to as a treatment zone, on the web, which bring a sufficient load for a web treatment, for example for a calendering or for dewatering. This is especially true for paper or board webs that do not require high pressure loads, ie in the range of 0.1 to 10 MPa.
  • the bands are made of plastic or alternatively of metal, in particular steel. Both materials offer advantages as well as disadvantages depending on the web to be treated.
  • a plastic band is cheaper and produces by its elasticity a more uniform compaction of the web.
  • the metal band is smoother to produce (with the smoothness on the web transmits) and wear-resistant.
  • rollers are provided for the circulating belts and that the roller is arranged so that it deflects the straight course of at least one belt between two guide rollers in order to create a treatment zone.
  • the band is stretched over the guide rollers, at least one of which is displaceable. In this volume, the roller "dips". Depending on the depth of immersion result in different lengths and adjustable in this way treatment zones.
  • the tension in the belt can be used to control the pressure on the web in the treatment zone.
  • At least two rollers are provided, in which the web runs in each case over a roller circumferential section between two belts. In this way it is possible to satinize the web once up and once down in a treatment zone. Any heat input or output is also equalized.
  • the web running path of the web runs from the first to the second roller between two belts.
  • the bands take over a heat-insulating function or over the cross-profile temperature-compensating function, depending on whether the bands are made of plastic or metal.
  • both rollers deflect the straight course of at least one band between two guide rollers to create two treatment zones.
  • the overlapping belts make the system only insignificantly longer, but one gains a second treatment zone in which a pressure on the web can be set independently of the first one.
  • the deflection and thus the wrap angle is adjustable via adjusting devices for at least one roller.
  • the pressures and the length of the treatment zone can be varied.
  • Such Walzenverstell pleaseden are known from the calender construction sufficiently.
  • hydraulic cylinders engage below the bearings to move the roller axis.
  • the bands approach each other in the direction of the web travel path in front of the treatment zone and thus form a funnel-like web inlet section. This results in a very simple web presentation, for example after a web break.
  • At least one roller and / or alternatively at least one belt can be heated. Heated rolls are well known in papermaking. In the event that it is a steel strip, the strip can simply be made via an inductive external heating with which the temperature can additionally be profiled over the transverse profile. Preferred surface temperatures for the treatment of a paper web are between 40 and 300 ° C.
  • At least one roller has an adjustability in its bending.
  • Such rolls are also known as rolls with hydrostatic support elements or in the form of so-called S-rolls.
  • S-rolls The use of such rolls offers the advantage that profile problems, for example in the bulk of the web to be treated, can be compensated.
  • FIGS. 1 to 3 show schematic representations of the web treatment device according to the invention.
  • the web treatment device 1 in FIG. 1 represents a calender for the calendering of paper and has two bands 5, 6.
  • the first volume 5 A roller 4 and a guide roller 10 run around in a similar configuration.
  • the second belt 6 rotates around a roller 3 and a guide roller 10. All of the rollers 3, 4 are preferably driven by electric motors in a manner not shown.
  • This "immersion” via an adjusting device 11 of the roller 3, 4, which is exemplified as a hydraulic cylinder which acts on the axis of the roller 4, is shown. This results in a peripheral portion ⁇ on the roller 3, 4, in which both bands 5, 6 abut the roller 3, 4.
  • the web 2 is located between the belts 5, 6. It is supplied via a funnel-shaped inlet section 12, which is formed by the belts 5, 6 at the entrance of the web treatment device. Subsequent to the inlet section 12, the bands 5, 6 run parallel over a part of their total length and form a kind of sandwich with the web in the middle.
  • a treatment zone 9 with pressures of between 0.1 and 100 MPa is applied to the web due to the tensile stress in the belts.
  • an additional force transducer 15 provide, as he exemplified in the form of hydrostatic support elements in a roller 3 in FIG. 2 is shown.
  • To equalize the compaction of the web can be ensured in a manner not shown that the surface of at least one roller is provided with an elastic coating.
  • the bands 5, 6 are made of the same material.
  • metal bands are provided with a smooth surface.
  • plastic bands are possibly better suited. The web is thus applied on both sides with the same surface quality.
  • a roller 3, 4 be heated from the inside, which in Fig. 1 is indicated by the peripheral bores 13 in the roller 4, through which a heat transfer fluid can be passed.
  • an external heating is used, which is usually an inductive heater 14. This can act on the metal strip and / or the roller 3.
  • Fig. 2 the additional advantage to the web treatment device 1 is added that the two rollers 3, 4 can also act against each other.
  • Force generators 15 press the shell of the roll 3 radially in the direction of the axis of roll 4.
  • the belts 5, 6 and the web 2 experience in the axial line-shaped area in which the roll surfaces would abut each other, if neither belt 5, 6 nor web 2 in between, a pressure pulse that is desirable on certain types of paper.
  • Fig. 3 shows a relatively short of the prior art web treatment device 1 with six long treatment zones 9 between two bands.
  • the rollers 3, 4 are arranged so that intermediate spaces 16 are provided, in which the web 2 is covered only from one side by a belt 5, 6.
  • the web 2 is accessible for moistening via a moistening device 17.
  • moistening before or during the calendering process is beneficial to the shine and smoothness.
  • the invention is also suitable as a press for the dewatering of a paper or board web.

Landscapes

  • Paper (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Soil Working Implements (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP08165676A 2007-12-10 2008-10-02 Dispositif de traitement de bande Expired - Fee Related EP2071076B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007055734A DE102007055734A1 (de) 2007-12-10 2007-12-10 Bahnbehandlungsvorrichtung

Publications (2)

Publication Number Publication Date
EP2071076A1 true EP2071076A1 (fr) 2009-06-17
EP2071076B1 EP2071076B1 (fr) 2010-08-18

Family

ID=40433694

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08165676A Expired - Fee Related EP2071076B1 (fr) 2007-12-10 2008-10-02 Dispositif de traitement de bande

Country Status (3)

Country Link
EP (1) EP2071076B1 (fr)
AT (1) ATE478192T1 (fr)
DE (2) DE102007055734A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2549013A1 (fr) * 2011-07-21 2013-01-23 Metso Paper, Inc. Procédé et agencement pour produire une bande de materiau fibreux

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010061903A1 (de) 2010-11-24 2012-05-24 Metso Paper, Inc. Modul für eine Faserbahnbearbeitungsmaschine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE575453C (de) * 1931-12-12 1933-04-28 Siempelkamp Gmbh & Co Pressvorrichtung
US5389205A (en) * 1990-11-23 1995-02-14 Valmet Paper Machinery, Inc. Method for dewatering of a paper web by pressing using an extended nip shoe pre-press zone on the forming wire
WO1998044195A1 (fr) 1997-04-02 1998-10-08 Valmet Corporation Procede de calandrage et calandre utilisant ledit procede
WO2003040471A1 (fr) * 2001-11-05 2003-05-15 Kimberly-Clark Worldwide, Inc. Systeme et procede de reduction de l'epaisseur de bandes de papier
DE10157691A1 (de) 2001-11-24 2003-06-12 Voith Paper Patent Gmbh Kalander und Verfahren zum Glätten einer Faserstoffbahn
WO2003064761A1 (fr) 2002-01-29 2003-08-07 Metso Paper, Inc. Dispositif de traitement et procede d'utilisation de ce dispositif pour traiter une nappe fibreuse enduite ou non enduite

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE575453C (de) * 1931-12-12 1933-04-28 Siempelkamp Gmbh & Co Pressvorrichtung
US5389205A (en) * 1990-11-23 1995-02-14 Valmet Paper Machinery, Inc. Method for dewatering of a paper web by pressing using an extended nip shoe pre-press zone on the forming wire
WO1998044195A1 (fr) 1997-04-02 1998-10-08 Valmet Corporation Procede de calandrage et calandre utilisant ledit procede
WO2003040471A1 (fr) * 2001-11-05 2003-05-15 Kimberly-Clark Worldwide, Inc. Systeme et procede de reduction de l'epaisseur de bandes de papier
DE10157691A1 (de) 2001-11-24 2003-06-12 Voith Paper Patent Gmbh Kalander und Verfahren zum Glätten einer Faserstoffbahn
WO2003064761A1 (fr) 2002-01-29 2003-08-07 Metso Paper, Inc. Dispositif de traitement et procede d'utilisation de ce dispositif pour traiter une nappe fibreuse enduite ou non enduite

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2549013A1 (fr) * 2011-07-21 2013-01-23 Metso Paper, Inc. Procédé et agencement pour produire une bande de materiau fibreux

Also Published As

Publication number Publication date
EP2071076B1 (fr) 2010-08-18
ATE478192T1 (de) 2010-09-15
DE102007055734A1 (de) 2009-06-18
DE502008001150D1 (de) 2010-09-30

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