EP1369527A1 - Calandre et procédé de calendrage - Google Patents

Calandre et procédé de calendrage Download PDF

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Publication number
EP1369527A1
EP1369527A1 EP03012561A EP03012561A EP1369527A1 EP 1369527 A1 EP1369527 A1 EP 1369527A1 EP 03012561 A EP03012561 A EP 03012561A EP 03012561 A EP03012561 A EP 03012561A EP 1369527 A1 EP1369527 A1 EP 1369527A1
Authority
EP
European Patent Office
Prior art keywords
counter
roller
jacket
shoe
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.)
Granted
Application number
EP03012561A
Other languages
German (de)
English (en)
Other versions
EP1369527B1 (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
Voith Paper 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, Voith Paper 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

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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. Calender arrangement with one Shoe roller and a counter roller, the one between them Form a wide nip through which a material web is guided is, the shoe roller a circumferential jacket has that with the help of a pressure shoe in the direction on the counter roller and the position the pressure shoe is changeable. Furthermore, the Invention a method for treating a web of material in a wide nip with a shoe roller a circumferential jacket and a counter roll is, the jacket through a pressure shoe in the direction is loaded on the counter roller.
  • a paper web is at least in the course of its production once passed through a nip that many times is formed by two rollers that are pressed against each other become.
  • the paper web is in the nip with a pressurized. On the one hand, this pressure serves the compression of the paper web. On the other hand, the Pressure affects the design of the surface the paper web. If you add heat to the nip enters, for example, that one of the rollers is heated, then the fibers of the paper web are plasticized, resulting in an improved surface, in particular with regard to gloss and / or smoothness properties, contributes.
  • the jacket can have different configurations. On the one hand, it can be relatively thick and in the manner of a Rotate roller. But it can also be designed as a thin band be run over multiple roles.
  • WO 01/51705 A1 describes another embodiment.
  • the pressure shoe on both ends beveled.
  • the invention has for its object a system to prevent the jacket on the counter roller.
  • This task is the beginning of a calender arrangement mentioned type in that the pressure shoe Can be moved into a position parallel to the axis of the counter roller in which he is only partially covered with the counter roller.
  • counter roll There is but there is no counter roll anymore, which is negative could act on the coat.
  • the concept of "counter roll” is to be understood here in general. In most The counter roll is actually cut by a cylindrical one Body formed.
  • the "counter roller” can but also in other ways as an abutment for the Sheath be formed, for example as a band or Coat.
  • the counter roller is preferably heated. If introduces heat into the wide nip via the counter roller, then you can heat the material web, which is also positive on the treatment of the material web, in particular the surface properties of a paper or Cardboard web, affects.
  • the pressure shoe is preferably inside the jacket displaced. You can then make the coat closed, i.e. also on its front side with boundary walls Mistake. Accordingly, it is possible inside lubrication of the jacket between the pressure shoe and the jacket by a lubricant, for example oil.
  • a lubricant for example oil.
  • the jacket and the counter roll are preferably stationary arranged relative to each other. This simplifies it the construction. So you don't have to face the counter roller the jacket or the jacket opposite the counter roller move. It is sufficient if the pressure shoe is moved to the effective axial length of the wide nip adjust.
  • the Breitnip is preferably a web guiding device upstream with which an offset of the material web is adjustable parallel to the axis of the counter roller.
  • This web guide it is now possible to To run the train exactly where the Breitnip work can, that is in the overlap area between the counter roller and the pressure shoe. This is regardless possible whether the material web of the calender arrangement in the right location. If the web is still would not reach the correct position by the web guidance device remedied.
  • the pressure shoe preferably has a drive relative to a beam with a web edge sensor is coupled.
  • the drive it is initially possible the shift of the pressure shoe compared to the To control the counter roll from the outside, i.e. it is not an intervention a fitter is required.
  • the drive can move the pressure shoe that one end of the pressure shoe with one edge of the web is in overlap and the other web edge with the end of the counter roll.
  • you will have to make certain surcharges or discounts here because the The pressure effect of the jacket on the material web under certain circumstances also something about the axial length of the pressure shoe can reach out.
  • the jacket is preferably with hold-down devices at its ends Mistake. These hold-downs pull the coat if he is not supported by the pressure shoe, away from the counter roller. This allows one to quickly sufficient distance between the counter roller and the Generate jacket, so that a negative thermal influence of the jacket through the counter roll, for example overheating, cannot take place. Basically, such a hold-down is only for that End of the sheath required that at an appropriate Relocation of the pressure shoe from the counter roller should be pulled away. At the other end is anyway there is no longer a counter roller against which the jacket is protected shall be. However, it is in many cases expedient and advantageous if you covered the shoe roller essentially symmetrical on its axial center formed.
  • the hold-down devices are preferably circumferential End discs formed.
  • the front discs close the from the jacket enclosed interior on the one hand. To the others are able to do so if necessary is a driving power for the rotation of the shell transferred to.
  • the end disks opposite the counter roller can be moreover perform the function that the front discs the coat outside of the pressure shoe from the Pull the counter roller away.
  • the task is in a method of the aforementioned Kind solved in that the pressure shoe parallel shifted to the axis of the counter roll in a position in which he is only partially in overlap with the counter roller is standing.
  • the axial Change length in which the material web in the wide nip is treated is equivalent to the width, in which the jacket is pressed against the counter roller becomes. If a correspondingly narrower web of material is treated then the pressure shoe will continue moved out of the overlap with the counter roller, so that the jacket has only a smaller axial Length is pressed against the counter roller. You can now adjust the coverage so that there is actually a touch could only take place in the area that is defined by the width of the material web. There in in this area, however, the material web through the wide nip is a contact between the counter roller and the jacket of the shoe roller not possible.
  • the jacket and the counter roll holds stationary relative to each other. This will the procedure is relatively simple. You just have to move individual element, namely the pressure shoe Counter roll.
  • the material web is preferably moved before entering in the wide nip parallel to the axis of the counter roller. Even if the material web is in the middle, for example to the counter roll, it is then possible to move the material web so that they are in the coverage area between the pressure shoe and the counter roller. This overlap area results from the axial End of the counter roll.
  • the material web so offset that one edge with one edge one work area of the counter roll and the other Completes the edge with the pressure shoe. This makes it easier the control. You get defined conditions for Guiding the material web. It also goes on this Way also defines how far the pressure shoe is opposite the counter roller must be moved out.
  • Fig. 1 shows a calender arrangement 1 with a shoe roller 2, the wide nip 4 with a counter roller 3 forms through which a material web 5, for example a paper web is guided.
  • the counter roll 3 is heated. Heating can take place, for example, by that a heating fluid or a steam through axially parallel channels 6 is guided, like this is known per se. But it is also possible to use the counter roller 3 to heat from the outside, as shown schematically is represented by an external heating device 7.
  • the shoe roller 2 has a jacket 8 made of one material on that is so compliant that it is through a pressure shoe 9 in the area of the broad nip 4 against the counter roller can be pressed and there the shape of the counter roller 3 assumes. So in this area the coat concave, while convex in the rest of the circulation is.
  • the jacket 8 can be relatively stiff and in the manner of a Rotate roller. This case is shown in Fig. 1. But it is also possible to simply coat 8 as a band train, which is performed with the help of support rollers and is also in circulation.
  • the pressure shoe 9 has a support surface 10 which in can be lubricated in a manner not shown, so that the jacket 8 low-friction on the support surface 10th can slide.
  • the support surface is in the present case shaped so that they the curvature of the counter roller 3rd is adjusted. However, this is not mandatory.
  • the pressure shoe 9 is mounted on a carrier 11, the is arranged inside the jacket 8 and the jacket 8 interspersed over the full length.
  • This carrier 11 is can also be seen in FIG. 2.
  • a drive 12 is arranged on the carrier 11 is supported on a support-fixed base 13. With help of the drive 12, it is possible to press the pressure shoe 9 in Direction of a double arrow 14 parallel to the axis 15 to move the counter-roller 3 in the same way as this is shown in Fig. 2 that the pressure shoe 9 only still partially covered by a work area 16 of the counter roll 3 stands.
  • the jacket 8 is at its two axial ends End plates 17, 18 provided which are rotatable on the carrier 11 are stored.
  • the two end disks 17, 18 are arranged so that their outer circumference has a predetermined distance from the counter roller 3.
  • the pressure shoe 9 the coat 8 raises accordingly in this area. Axially outside of the pressure shoe 9, the jacket 8 by the End disks 17, 18 are pulled away from the counter roller 3.
  • the end disks 17, 18 thus form hold-down devices.
  • the location determine the edges of the material web 5.
  • the web edge sensors 19, 20 are coupled to the drive 12. Furthermore, the web edge sensors 19, 20 with a Web guide device 21 coupled, which also before Breitnip 4 is arranged. With the help of the web guide 21, it is possible for the material web 5 to be one to convey lateral offset A.
  • the material web 5 should be controlled so that one edge 22 with the axial end of the working area 16 of the counter roll 3 completes.
  • 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 with the axial effective limit of the pressure shoe 9 completes. In this way you ensure that the jacket 8 only in one area to the counter roller 3 is approximated where the material web 5 between the counter roller 3 and the jacket 8. The remaining areas of the jacket 8 become reliable through the end disks 17, 18 at a distance from the counter roller 3 held.
  • the counter roller 3 and the jacket 8 of the shoe roller 2 are arranged stationary relative to each other. With an adjustment the pressure shoe 9 thus changes the mutual local assignment of counter roll 3 and jacket 8 not.
  • the web guide device has two guide rollers 24, 25 arranged on a common frame 26 are.
  • This frame is about a pivot point 27 in the direction of the double arrows 28 can be rotated, as shown in FIG. 3 is shown, so that the offset A in relatively wide Ranges can be set.
  • the inflow of the material web 5 should be adjusted in this way be that the one edge 22 with the edge of the Work area 16 of the counter roller 3 completes while otherwise the pressure shoe 9 by the drive 12 so is set that the effect of the pressure shoe 9 over the jacket 8 on the material web 5 at the other Edge 23 stops.
  • This doesn't necessarily mean that the pressure shoe 9 exactly on the web edge 23rd must end. In many cases, it already becomes a small one End route before because of the inherent rigidity of the jacket 8 still a certain pressure on the material web 5 also applied in the region of their edge 23 will be.
  • the jacket 8 has a larger axial extent than the work area 16 of the counter roll 3. This is required so that the pressure shoe 9 within the Jacket 8 extended so far under the counter roller 3 can be that he is only partially with the counter roller 3 is in coverage.

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  • Paper (AREA)
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 true EP1369527A1 (fr) 2003-12-10
EP1369527B1 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)

Citations (3)

* 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
WO2001051705A1 (fr) * 2000-01-13 2001-07-19 Metso Paper, Inc. Procede pour presser une bande de papier et calandre ou dispositif de pressage avec sabot mobile
WO2001075225A1 (fr) * 2000-04-05 2001-10-11 Metso Paper, Inc. Procede de prevention d'endommagements d'une courroie a revetement de polymere dans une calandre, et calandre y relative

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Patent Citations (3)

* 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
WO2001051705A1 (fr) * 2000-01-13 2001-07-19 Metso Paper, Inc. Procede pour presser une bande de papier et calandre ou dispositif de pressage avec sabot mobile
WO2001075225A1 (fr) * 2000-04-05 2001-10-11 Metso Paper, Inc. Procede de prevention d'endommagements d'une courroie a revetement de polymere dans une calandre, et calandre y relative

Also Published As

Publication number Publication date
DE10225256A1 (de) 2004-01-08
DE10225256B4 (de) 2006-03-30
EP1369527B1 (fr) 2008-01-02
DE50308899D1 (de) 2008-02-14

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