EP1369527B1 - Calandre et procédé de calendrage - Google Patents

Calandre et procédé de calendrage Download PDF

Info

Publication number
EP1369527B1
EP1369527B1 EP20030012561 EP03012561A EP1369527B1 EP 1369527 B1 EP1369527 B1 EP 1369527B1 EP 20030012561 EP20030012561 EP 20030012561 EP 03012561 A EP03012561 A EP 03012561A EP 1369527 B1 EP1369527 B1 EP 1369527B1
Authority
EP
European Patent Office
Prior art keywords
roll
web
shoe
counter
opposing roll
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
EP20030012561
Other languages
German (de)
English (en)
Other versions
EP1369527A1 (fr
Inventor
Jochen Autrata
Günter Bonk
Thomas Hermsen
Rüdiger KURTZ
Josef Schneid
Thomas Wöhner
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 EP1369527A1 publication Critical patent/EP1369527A1/fr
Application granted granted Critical
Publication of EP1369527B1 publication Critical patent/EP1369527B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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. Calender arrangement with a shoe roll and a counter roll, which form between them a broad nip through which a material web is guided, wherein the shoe roll has a circumferential jacket, which is loadable by means of a pressure shoe towards the counter roll and the position of the pressure shoe is changeable. Furthermore, the invention relates to a method for treating a material web in a nip, which is formed by a shoe roll having a circumferential jacket and a counter-roller, wherein the jacket is loaded by a pressure shoe in the direction of the counter-roller.
  • a paper web is passed at least once in the course of its production through a nip, which is often formed by two rollers which are pressed against each other.
  • the paper web is subjected to an increased pressure.
  • This pressure is used for a compression of the paper web.
  • the pressure has an impact on the design of the surface of the paper web.
  • heat is introduced into the nip, for example by heating one of the rolls, the fibers of the paper web are plasticized, which contributes to an improved surface, especially with regard to gloss and / or smoothness properties.
  • a broad nip is formed by a circumferential jacket, which rests against the counter-roller under the action of a pressure shoe, wherein the paper web is arranged between the jacket and the counter-roller.
  • the jacket lies against a part of the circumference of the counter roll. Accordingly, the jacket must be sufficiently deformable, so that it is approximately concave in the region of the pressure shoe adapted to the counter-roller, while it extends convexly in the remaining area.
  • the jacket can have different configurations. For one thing, it can be relatively thick and revolve in the manner of a roller. But it can also be designed as a thin band, which is guided over several roles.
  • an elastomeric plastic as the material for the jacket.
  • a plastic is flexible and yielding enough so that it can adapt to the shape of the backing roll.
  • the smoothing gap is designed as a broad nip, which has a shoe roll and a counter-roller.
  • the shoe roll is provided with a circumferential jacket, which is loadable by means of a pressure shoe in the direction of the counter roll.
  • the position of the pressure shoe is variable, both parallel to the axis of the backing roll, as well as orthogonal thereto.
  • WO 01/75225 A1 For example, a method is known for preventing the elastic band forming the circumferential jacket of a shoe roll from being damaged. Furthermore, a calender is disclosed using this method. The counter roll of the shoe roll is heated. One suggestion is to abrade the area of the band that overhangs the web. In this case, a reduction in the thickness of, for example, 2 mm is sufficient. This prevents direct contact of the strip with the heated counter-roll. The tape is not damaged by the heat. A second proposal is to displace the belt so that the first side of the belt is aligned with a first side of the web. Then the pressure shoe is aligned so that it is aligned with the second side of the web. The second end of the band, which projects beyond the material web, is not acted upon by the pressure shoe so that it does not come into contact with the counter-roller.
  • WO 01/51705 A1 describes another embodiment.
  • the pressure shoe is bevelled at its two end faces.
  • the invention has for its object to prevent a system of the jacket on the counter roll.
  • counter roll is to be understood here in general. In most cases, the counter roll is actually formed by a cylindrical body. However, the "counter roll” can also be designed in other ways as an abutment for the jacket, for example as a belt or sheath.
  • the counter roll is heated. If one introduces heat into the broad nip via the counter-roller, then one can heat the material web, which likewise has a positive effect on the treatment of the material web, in particular the surface properties of a paper or board web.
  • the pressure shoe is displaceable within the shell.
  • the jacket and the counter roll are arranged stationary relative to each other. This is simplified the construction. So you do not have to move the counter roll relative to the jacket or the jacket against the counter roll. It is sufficient if the pressure shoe is moved to adjust the effective axial length of the wide nip.
  • the wide nip is preceded by a web guiding device, with which an offset of the material web is adjustable parallel to the axis of the counter-roller.
  • a web guiding device With this web guide it is now possible to guide the web exactly where the wide nip can work, ie in the overlap area between the mating roll and the pressure shoe. This is possible regardless of whether the material web of the calender arrangement tapers in the correct position. If the material web would not yet reach the correct position, the web guiding device provides a remedy.
  • the pressure shoe has a drive relative to a carrier which is coupled to a web edge sensor.
  • the drive By the drive, it is initially possible to control the displacement of the pressure shoe against the counter roll from the outside, ie there is no intervention of a technician required.
  • a certain degree of automation can be achieved with the aid of the drive and the associated web edge sensor.
  • the drive can move the pressure shoe so that the one end of the pressure shoe is in register with the one web edge and the other web edge terminates with the end of the counter roll.
  • you will have to make certain surcharges or deductions here because the pressure effect of the shell on the web under certain circumstances may also extend slightly beyond the axial length of the pressure shoe.
  • the jacket is provided at its ends with hold-downs. These hold-downs pull the jacket away from the backing roll when it is not supported by the pressure shoe. This makes it possible to quickly generate a sufficient distance between the backing roll and the shell, so that a negative thermal influence of the shell by the counter roll, such as overheating, can not take place. Basically, such a hold-down is required only for the end of the shell, which is to be pulled away from the counter-roll with a corresponding displacement of the pressure shoe. At the other end, there is no longer any counter-roll in front of which the jacket is to be protected. However, it is expedient and advantageous in many cases if one forms the shoe roll based on its axial center substantially symmetrical.
  • the hold-down are formed by circumferential end plates.
  • the face plates close off the interior enclosed by the jacket on the one hand. On the other hand, they are able, if necessary, to transmit a drive power for the rotation of the shell.
  • By a corresponding positioning of the end plates relative to the counter roller can also fulfill the function that the end plates pull the jacket outside of the pressure shoe of the backing roll away.
  • the object is achieved in a method of the type mentioned above in that the pressure shoe is displaced parallel to the axis of the backing roll, that is, in the axial direction, in a position in which it is only partially in overlap with the backing roll.
  • the shell and the counter-roller are held stationary relative to one another. This makes the process relatively easy. You just have to move a single element, namely the pressure shoe of the counter roll.
  • the material web is offset parallel to the axis of the counter roll before entering the broad nip. Even if the material web, for example, runs centrally to the counter roll, it is then possible, the material web to lead so that it enters the coverage area between the pressure shoe and the counter roll. This overlap area results at the axial end of the counter roll.
  • one offset the web so that the one edge terminates with one edge of a work area of the counter roll and the other edge with the pressure shoe. This facilitates the control. You get defined conditions for guiding the material web. In addition, in this way also defines how far the pressure shoe against the counter roll must be moved out.
  • Fig. 1 shows a calender 1 with a shoe roll 2, which forms a nip 4 with a counter-roller 3, through which a material web 5, for example a paper web, is guided.
  • the counter roll 3 is heated.
  • the heating can be effected, for example, by passing a heating fluid or a vapor through passages 6 which are guided parallel to the axis, like this known per se. But it is also possible to heat the counter roll 3 from the outside, as shown schematically by an external heater 7.
  • the shoe roll 2 has a jacket 8 made of a material which is so flexible that it can be pressed by a pressure shoe 9 in the region of the broad nip 4 against the counter roll and there assumes the shape of the counter roll 3. In this area, therefore, the mantle is formed concave, while it is convex in the rest of circulation.
  • the jacket 8 may be relatively stiff and rotate in the manner of a roller. This case is shown in FIG. But it is also possible to simply form the jacket 8 as a band, which is guided by means of support rollers and is also performed in circulation.
  • the pressure shoe 9 has a support surface 10 which may be lubricated in a manner not shown, so that the jacket 8 can slide smoothly over the support surface 10.
  • the support surface is formed in the present case so that it is adapted to the curvature of the counter roll 3. However, this is not mandatory.
  • the pressure shoe 9 is mounted on a support 11, which is arranged in the interior of the jacket 8 and passes through the jacket 8 over the full length.
  • This carrier 11 can also be seen in Fig. 2.
  • a drive 12 is arranged, which is supported on a carrier-fixed base 13. With the help of the drive 12, it is possible, the pressure shoe 9 in Direction of a double arrow 14 to move parallel to the axis 15 of the backing roll 3 and indeed, as shown in Fig. 2, that the pressure shoe 9 is only partially overlapping with a working area 16 of the backing roll 3.
  • the jacket 8 is provided at its two axial ends with front discs 17, 18, which are rotatably mounted on the carrier 11.
  • the two end disks 17, 18 are arranged so that their outer periphery has a predetermined distance from the counter roll 3.
  • the pressure shoe 9 In order for the jacket 8 to come into abutment against the counter roll 3 or against the material web 5 bearing against the counter roll 3, it is necessary for the pressure shoe 9 to raise the jacket 8 correspondingly in this area. Axially outside the pressure shoe 9, the jacket 8 is pulled away from the counter roll 3 by the end disks 17, 18.
  • the end plates 17, 18 thus form hold-down.
  • web edge sensors 19, 20 are arranged, which determine the position of the edges of the web 5.
  • the web edge sensors 19, 20 are coupled to the drive 12.
  • the web edge sensors 19, 20 are coupled to a web guiding device 21, which is likewise arranged in front of the broad nip 4. With the aid of the web guiding device 21, it is possible to impart a lateral offset A to the material web 5.
  • the web 5 should be controlled so that its one edge 22 terminates with the axial end of the working area 16 of the counter roll 3.
  • the drive 12 controls under the specification of the web edge sensor 20 for the other web edge 23, the position of the pressure shoe 9 so that this other Web edge 23 terminates with the axial effective limit of the pressure shoe 9.
  • the counter roll 3 and the shell 8 of the shoe roll 2 are arranged stationary relative to each other. In an adjustment of the pressure shoe 9 so the mutual local assignment of mating roll 3 and sheath 8 does not change.
  • the web guiding device has two guide rollers 24, 25, which are arranged on a common frame 26.
  • This frame is rotatable about a pivot point 27 in the direction of the double arrows 28, as shown in Fig. 3, so that the offset A can be adjusted in relatively wide ranges.
  • the feed of the web 5 should be adjusted so that the one edge 22 terminates with the edge of the working area 16 of the backing roll 3, while the rest of the pressure shoe 9 is adjusted by the drive 12 so that the effect of the pressure shoe 9 over the jacket 8 stops on the web 5 at the other edge 23.
  • the jacket 8 has a greater axial extent than the working area 16 of the counter roll 3. This is necessary so that the pressure shoe 9 can be moved out so far under the mantle 8 under the mating roll 3, that it only partially overlaps with the mating roll 3 stands.

Landscapes

  • Paper (AREA)

Claims (12)

  1. Agencement de calandrage (1) comprenant un cylindre à sabot (2) et un contre-cylindre (3), qui constituent entre eux un pinçage prolongé (4), à travers lequel une bande de matériau (5) est guidée, le cylindre à sabot (2) présentant une enveloppe périphérique (8) qui peut être sollicitée à l'aide d'un sabot de pressage (9) dans la direction du contre-cylindre (3), la position du sabot de pressage (9) étant variable, caractérisé en ce que le sabot de pressage (9) peut être déplacé parallèlement à l'axe (15) du contre-cylindre (3), c'est-à-dire dans la direction axiale, dans une position dans laquelle il ne recouvre plus que partiellement le contre-cylindre (3).
  2. Agencement selon la revendication 1, caractérisé en ce que le contre-cylindre (3) est chauffé.
  3. Agencement selon la revendication 1 ou 2, caractérisé en ce que le sabot de pressage (9) peut être déplacé à l'intérieur de l'enveloppe (8).
  4. Agencement selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'enveloppe (8) et le contre-cylindre (3) sont disposés fixement l'un par rapport à l'autre.
  5. Agencement selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le pinçage prolongé (4) est précédé d'un dispositif de guidage de bande (21) avec lequel un décalage (A) de la bande de matériau (5) parallèlement à l'axe (15) du contre-cylindre (3) peut être ajusté.
  6. Agencement selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le sabot de pressage (9) présente un entraînement (12) par rapport à un support (11), qui est accouplé à un détecteur d'arête de bande (19, 20).
  7. Agencement selon l'une quelconque des revendications 1 à 6, caractérisé en ce que l'enveloppe (8) est munie à ses extrémités de serre-flan (17, 18).
  8. Agencement selon la revendication 7, caractérisé en ce que les serre-flan (17, 18) sont formés par des disques frontaux périphériques.
  9. Procédé de traitement d'une bande de matériau (5) dans un pinçage prolongé (4), qui est formé par un cylindre à sabot (2) avec une enveloppe périphérique (8) et un contre-cylindre (3), l'enveloppe (8) étant sollicitée par un sabot de pressage (9) dans la direction du contre-cylindre (3), caractérisé en ce que le sabot de pressage (9) est déplacé parallèlement à l'axe du contre-cylindre (3), c'est-à-dire dans la direction axiale, dans une position dans laquelle il ne recouvre plus que partiellement le contre-cylindre (3).
  10. Procédé selon la revendication 9, caractérisé en ce que l'on maintient l'enveloppe (8) et le contre-cylindre (3) relativement fixement l'un par rapport à l'autre.
  11. Procédé selon la revendication 9 ou 10, caractérisé en ce que l'on déplace la bande de matériau (5) avant l'entrée dans le pinçage prolongé (4) parallèlement à l'axe du contre-cylindre (3).
  12. Procédé selon la revendication 11, caractérisé en ce que l'on déplace la bande de matériau (5) de telle sorte que l'une de ses arêtes se termine contre une arête d'une plage de travail du contre-cylindre (3) et que l'autre arête se termine contre le sabot de pressage (9).
EP20030012561 2002-06-07 2003-06-03 Calandre et procédé de calendrage Expired - Lifetime EP1369527B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10225256 2002-06-07
DE2002125256 DE10225256B4 (de) 2002-06-07 2002-06-07 Kalanderanordnung und Verfahren zum Behandeln einer Materialbahn

Publications (2)

Publication Number Publication Date
EP1369527A1 EP1369527A1 (fr) 2003-12-10
EP1369527B1 true EP1369527B1 (fr) 2008-01-02

Family

ID=29432690

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030012561 Expired - Lifetime EP1369527B1 (fr) 2002-06-07 2003-06-03 Calandre et procédé de calendrage

Country Status (2)

Country Link
EP (1) EP1369527B1 (fr)
DE (2) DE10225256B4 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4344165A1 (de) * 1993-12-23 1995-06-29 Voith Gmbh J M Verfahren zum Glätten einer Faserstoffbahn in einem verlängerten Glättspalt und Vorrichtung zur Durchführung des Verfahrens
SE9804347D0 (sv) * 1998-12-16 1998-12-16 Valmet Corp Method and apparatus for calendering paper
SE9804346D0 (sv) * 1998-12-16 1998-12-16 Valmet Corp Method and apparatus for calendering paper
FI117057B (fi) * 2000-01-13 2006-05-31 Metso Paper Inc Menetelmä paperirainan puristamiseksi ja paperirainan puristuslaite
FI113675B (fi) * 2000-04-05 2004-05-31 Metso Paper Inc Menetelmä polymeeripinnan vahingoittumisen estämiseksi kalanterilla ja kalanteri

Also Published As

Publication number Publication date
DE50308899D1 (de) 2008-02-14
DE10225256B4 (de) 2006-03-30
EP1369527A1 (fr) 2003-12-10
DE10225256A1 (de) 2004-01-08

Similar Documents

Publication Publication Date Title
CH662837A5 (de) Kalander zur druck- und waermebehandlung von warenbahnen.
AT3330U1 (de) Verfahren und vorrichtung zum kalandrieren von papier
DE69802672T2 (de) Verfahren zum kalandrieren und kalander zur anwendung des verfahrens
EP0529385A1 (fr) Procédé et dispositif pour produire une bande lisse et brillante
EP0745724B1 (fr) Presse à rouleaux
EP1369527B1 (fr) Calandre et procédé de calendrage
EP1162045B1 (fr) Dispositif à rouleau
EP1314819B1 (fr) Calandre et procédé pour le lissage de bandes de papier ou carton
DE2335291A1 (de) Verfahren und vorrichtung zum trocknen von papierbahnen
EP1369526B1 (fr) Calandre et procédé de calandrage
EP2913435B1 (fr) Calandre
DE10204286B4 (de) Kalander und Verfahren zum Betreiben eines Kalanders
EP1314820B1 (fr) Calandre pour le lissage d' une bande fibreuse
EP3887138A1 (fr) Dispositif pour le traitement par pression de matériaux plats
EP0792965A1 (fr) Procédé pour le satinage du papier et calandre pour l'application du procédé
EP1559831B1 (fr) Calandre à pince allongée
EP1318232B1 (fr) Calandre et procédé pour le lissage d'une bande de papier ou carton
EP2560770B1 (fr) Laminoir a feuillards pour laminer a froid une bande metallique avec un mecanisme de compression
DE202011103252U1 (de) Vorrichtung zur behandlung einer faserstoffbahn
EP1609907B1 (fr) Calandre à pincage prolongée et procédé de satinage d' une bande de matériau
EP1342840A1 (fr) Calandre et procédé de lissage d'une bande fibreuse
DE102009045177A1 (de) Verfahren und Maschine zur Herstellung einer Faserstoffbahn
DE10336216A1 (de) Dichtungseinrichtung für eine Papiermaschine
EP1033338A2 (fr) Machine pour production et/ou traitment d' une bande de matériau
DE102005013626A1 (de) Glättanordnung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20031004

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

AKX Designation fees paid

Designated state(s): DE FI SE

17Q First examination report despatched

Effective date: 20060126

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: VOITH PATENT GMBH

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RIN1 Information on inventor provided before grant (corrected)

Inventor name: AUTRATA, JOCHEN

Inventor name: SCHNEID, JOSEF

Inventor name: KURTZ, RUEDIGER

Inventor name: BONK, GUENTER

Inventor name: HERMSEN, THOMAS

Inventor name: WOEHNER, THOMAS

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FI SE

REF Corresponds to:

Ref document number: 50308899

Country of ref document: DE

Date of ref document: 20080214

Kind code of ref document: P

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20081003

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20100614

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FI

Payment date: 20110613

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20110622

Year of fee payment: 9

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120603

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50308899

Country of ref document: DE

Effective date: 20130101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130101

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110604