EP1887131A1 - Agencement de calendre - Google Patents

Agencement de calendre Download PDF

Info

Publication number
EP1887131A1
EP1887131A1 EP07108003A EP07108003A EP1887131A1 EP 1887131 A1 EP1887131 A1 EP 1887131A1 EP 07108003 A EP07108003 A EP 07108003A EP 07108003 A EP07108003 A EP 07108003A EP 1887131 A1 EP1887131 A1 EP 1887131A1
Authority
EP
European Patent Office
Prior art keywords
arrangement according
roller
calender arrangement
nip
band
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.)
Withdrawn
Application number
EP07108003A
Other languages
German (de)
English (en)
Inventor
Hans-Rolf Conrad
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 EP1887131A1 publication Critical patent/EP1887131A1/fr
Withdrawn legal-status Critical Current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
    • D21G1/0066—Calenders; Smoothing apparatus using a special calendering belt
    • 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 belt guided over at least two deflecting elements, which bears against a counterpressure element over a predetermined length and forms a nip for the treatment of a material web with the counterpressure element.
  • Such a calender arrangement is for example off WO 03/064764 A1 known.
  • the band is designed as a metal band, which is guided over four pulleys. In a section between two pulleys dips a counter roll, which is wrapped by the band over about 120 °.
  • a counter roll which is wrapped by the band over about 120 °.
  • the invention has for its object to satinize a web with reasonable effort without burdening the band too much.
  • the deflecting element is utilized for two functions.
  • the deflecting element forms a support during the circulation of the band, so that the band can rest over a predetermined length on the counter-pressure element.
  • the deflection is also used for direct pressure generation.
  • the material web can be subjected to a higher pressure. Since this higher pressure is generated at the entrance and / or at the exit of the broad nip, this higher pressure can be used to advantage for the design of the calendering process.
  • the inlet-side deflecting element bears against the counter-pressure element.
  • the web that enters the nip receives a pressure pulse at the beginning of the calendering process.
  • the band is clamped, as it were, between the inlet-side deflecting element and the counter-pressure element, so that it is easier to maintain a higher compressive stress in the subsequent treatment zone, in which the band interacts with the counterpressure element, without overloading the band. Accordingly, one can get good calendering results here.
  • the counter-pressure element preferably has a pressure-generating device in the region of at least one adjoining deflection element.
  • a pressure generating device can be used, for example, a hydraulic support element arrangement, which is arranged in the interior of the counter-pressure element. This can be achieved, for example, a deflection compensation and realize higher forces in the nip. In addition, not all forces must be applied through the bearings.
  • the pressure-generating device transversely to the passage direction of the material web divided by the nip into a plurality of individually controllable zones is. This can be in the transverse direction of the train set a predetermined pressure profile, so that you can use the nip within certain limits to a cross profile compensation.
  • At least one of the deflection elements can be tempered and the band is designed to conduct heat.
  • the deflecting element can therefore be heated beyond the ambient temperature or cooled below the ambient temperature. This results in a further possibility of influence in the treatment of the web in the nip. Since the band is formed thermally conductive, the web can be thermally acted through the band. If the deflecting element is heated, for example, then a corresponding heat is introduced into the material web.
  • both deflecting elements are temperature-controlled. This can be set in the calendering a temperature profile over the treatment length targeted. So you can, for example, the temperature during the passage of the web through the nip rise or fall.
  • the inlet-side deflecting element is designed as a heating device and the outlet-side deflecting element as a cooling device.
  • the material web is thus heated upon entry into the nip by the inlet-side deflecting element and cooled at the outlet from the nip through the outlet-side deflecting element.
  • This can be done in an advantageous way For example, exploit to achieve a better smoothing of the surface with the help of the elevated temperature, but on the other hand, to avoid a flash evaporation, because the path during or shortly before exiting the nip cools so far that the liquid vaporized by the heating is condensed again in the web.
  • the heating power of the inlet-side deflecting element is adapted to the speed of the belt and the material web, that the tape has delivered more than 75% of the amount of heat supplied by the deflecting device to the material web after a predetermined length of the nip.
  • the heat absorption capacity of the material web is known or can be determined with a few tests.
  • the heat transfer between the band and the material web is known or can be determined.
  • the smooth surface achieved in the nip thus remains smooth and is not torn open again by the exiting steam.
  • the band has a metal content. It can also be designed as a metal band.
  • a metal strip for example as a pure metal strip or as a reinforcement of a plastic, has the advantage that on the one hand can achieve a relatively high strength of the tape, but on the other hand can also realize a good thermal conductivity. The heat transfer between the deflecting elements and the belt is thereby improved.
  • the counter-pressure element is designed as a roller and the two deflection devices are arranged so that their contact points include a circumferential angle of at most 90 ° to the roller.
  • the forces introduced into the roller are concentrated on a relatively small section of the roller, that is to a maximum of a quarter of the circumference.
  • the storage of the roller can then be dimensioned. The risk of ovalization of the roller is kept small.
  • the roller has an elastic surface.
  • a "soft" nip is thus realized, ie a nip, in which a boundary surface is formed by an unyielding and thus “hard” surface, while the other surface by a “soft” because compliant surface is formed. This results in similar conditions as in a super or soft calender, although the compressive stresses can be kept smaller.
  • the roller has a heating device. This makes it possible, in addition to the heating by the deflecting element or alternatively to enter heat in the web to promote the calendering process.
  • the heater acts from the outside on the peripheral surface of the roller.
  • the roller so the counter-pressure element for heating the material web, without the heat must penetrate the entire roller.
  • this keeps the energy consumption low and, on the other hand, simplifies the construction work for the counterpressure element.
  • the roller has a heat-conducting peripheral surface.
  • a heat-conducting peripheral surface there are several possibilities for this.
  • the choice of the band then depends on the circumstances. In any case, you can also use a metal band.
  • the band has a tensioning device.
  • the deflection devices are designed as deflection rollers.
  • friction losses are kept small.
  • the load on the band during deflection is kept small.
  • a calender arrangement 1 has a roller 2, which carries an elastic covering 4 on a hollow cylindrical shell 3.
  • the radial thicknesses of shell 3 and lining 4 are not shown to scale here.
  • the jacket 3 is penetrated by a carrier 5, which carries two rows of support elements 6, 7.
  • the support elements 6, 7 support the casing 3 from the inside against external loads. They can be hydrostatically or hydrodynamically lubricated.
  • the support elements 6, 7 can be controlled individually or in zones.
  • a band 8 cooperates, which is formed as a metal band or at least contains a larger proportion of metal.
  • the band 8 thus has on the one hand a relatively high tensile strength. The other is able to conduct heat.
  • the band 8 is thus formed thermally conductive.
  • the band 8 is applied over a circumferential angle of at most 90 ° to the circumference of the roller 2 and forms a nip 9 with the roller 2, which, as can be seen from the drawing, is designed as a broad nip.
  • a material web 10 passes in the direction of an arrow 11, the nip 9.
  • the web 10 is on one side of the elastic surface of the pad 4 of the roller 2 and on the other side of the surface of the belt 8, for example, a metal surface and thus a hard Surface, applied.
  • the belt 8 is guided via an inlet-side guide roller 12 and an outlet-side guide roller 13 and a tension roller 14 in one circulation.
  • the tension roller 14 is displaceable by a drive 15 in order to tension the band 8 more or less strongly.
  • the tension is particularly important in the section which is used for calendering the material web 10, ie the section between the two deflection rollers 12, 13.
  • the guide roller 12 and the guide roller 13 are arranged relative to the roller 2 so that they each form an inlet-side nip 16 and an outlet-side nip 17 with the roller 2.
  • the material web 10 is pressurized together with the belt 8 with pressure.
  • the support elements 6 cooperate with the inlet-side guide roller 12 to the inlet side Nip 16 to produce a predetermined compressive stress.
  • the support elements 7 cooperate with the deflection roller 13 to produce a corresponding pressure distribution in the outlet side nip 17.
  • the effective directions of the two support element rows 6, 7 include an angle ⁇ , which is a maximum of 90 °, but is usually smaller. The angle ⁇ is therefore an acute angle.
  • This wrap angle corresponds to the angle ⁇ .
  • the deflection roller 12 is connected to a tempering device 18, which is formed for example as a heater and a heated liquid passes through heating channels 19.
  • the heating channels 19 may be formed by peripheral holes in the guide roller 12.
  • the elevated temperature of the guide roller 12 is passed through the heat-conducting tape 8 to the web 10, so that the web 10 is heated.
  • a higher temperature is known for a calendering advantage.
  • the heat supply by the tempering device 18 may be so large that the temperature of the material web 10 rises above 100 ° C. In this case, the water contained in the material web 10 evaporates.
  • the deflection roller 13 is connected to a further tempering device 20, which passes a heat transfer medium, for example cold water, through cooling channels 21.
  • a heat transfer medium for example cold water
  • the deflection roller 13 may be formed as a peripherally drilled roll. With the help of the guide roller 13, it is therefore possible to cool the web 10 through the jacket 8 before leaving the nip 9 so far that the vaporized liquid contained in the web 10 condenses again. By cooling the guide roller 13 so a flash evaporation of the web 10 is avoided.
  • the heating power of the guide roller 12 is matched to the speed of the web 10 and thus also to the rotational speed of the belt 8, that the heat transfer from the belt 8 to the web 10 is completed before the web 10 enters the sphere of influence of the cooled guide roller 13 , This avoids that unused heating power is lost, so must be transported by the cooled guide roller 13 again.
  • the roller 2 is heated by a heating device 22, for example, an inductive heating device on its surface.
  • a heating device 22 for example, an inductive heating device on its surface.
  • the roller 2 may be provided on its periphery with a metal layer or with another layer in which eddy currents can be induced. Since only the surface of the roller 2 is heated, the thermal load of the roller 2 is otherwise kept small. Also, no large amounts of energy are needed to heat the roll as a whole.
  • the calendering of the material web 10 can be carried out in a relatively long treatment length.
  • the material web 10 can heat up specifically and possibly also cool.

Landscapes

  • Paper (AREA)
  • Treatment Of Fiber Materials (AREA)
EP07108003A 2006-08-09 2007-05-11 Agencement de calendre Withdrawn EP1887131A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610037358 DE102006037358B4 (de) 2006-08-09 2006-08-09 Kalanderanordnung

Publications (1)

Publication Number Publication Date
EP1887131A1 true EP1887131A1 (fr) 2008-02-13

Family

ID=38179534

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07108003A Withdrawn EP1887131A1 (fr) 2006-08-09 2007-05-11 Agencement de calendre

Country Status (2)

Country Link
EP (1) EP1887131A1 (fr)
DE (1) DE102006037358B4 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0141614A2 (fr) 1983-10-24 1985-05-15 Black-Clawson International Limited Traitement de surface du papier et du carton
DE10116840A1 (de) 2001-04-04 2002-10-17 Voith Paper Patent Gmbh Verfahren und Vorrichtung zum Glätten einer Materialbahn
DE10157688C1 (de) 2001-11-24 2003-02-13 Voith Paper Patent Gmbh Kalander zum Glätten einer Bahn aus Faserstoff
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
WO2003064762A1 (fr) 2002-01-29 2003-08-07 Metso Paper, Inc. Dispositif de traitement et procede d'exploitation du dispositif pour traiter une bande fibreuse couchee ou non couchee
WO2003064764A1 (fr) 2002-01-29 2003-08-07 Metso Paper, Inc. Dispositif de traitement pour traiter une bande fibreuse couchee ou non couchee
WO2003074783A1 (fr) 2002-03-07 2003-09-12 Metso Paper, Inc. Procede et calandre permettant de chauffer et de refroidir une bande continue de papier dans une pince de la calandre
US20040202833A1 (en) 2002-08-24 2004-10-14 D.W. Anderson Uncoated facestock for adhesive-backed labels

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI95061C (fi) * 1993-03-08 1995-12-11 Valmet Paper Machinery Inc Menetelmä paperiradan kalanteroinnissa ja menetelmää soveltava kalanteri
FI114649B (fi) * 2003-07-11 2004-11-30 Metso Paper Inc Laitteisto ja menetelmä päällystetyn tai päällystämättömän kuiturainan käsittelemiseksi

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0141614A2 (fr) 1983-10-24 1985-05-15 Black-Clawson International Limited Traitement de surface du papier et du carton
DE10116840A1 (de) 2001-04-04 2002-10-17 Voith Paper Patent Gmbh Verfahren und Vorrichtung zum Glätten einer Materialbahn
DE10157688C1 (de) 2001-11-24 2003-02-13 Voith Paper Patent Gmbh Kalander zum Glätten einer Bahn aus Faserstoff
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
WO2003064762A1 (fr) 2002-01-29 2003-08-07 Metso Paper, Inc. Dispositif de traitement et procede d'exploitation du dispositif pour traiter une bande fibreuse couchee ou non couchee
WO2003064764A1 (fr) 2002-01-29 2003-08-07 Metso Paper, Inc. Dispositif de traitement pour traiter une bande fibreuse couchee ou non couchee
WO2003074783A1 (fr) 2002-03-07 2003-09-12 Metso Paper, Inc. Procede et calandre permettant de chauffer et de refroidir une bande continue de papier dans une pince de la calandre
US20040202833A1 (en) 2002-08-24 2004-10-14 D.W. Anderson Uncoated facestock for adhesive-backed labels

Also Published As

Publication number Publication date
DE102006037358B4 (de) 2008-09-25
DE102006037358A1 (de) 2008-02-14

Similar Documents

Publication Publication Date Title
DE3020669C2 (de) Verfahren zur Steuerung der Liniendruckverteilung in einem Kalander sowie ensprechender Kalander
DE29813663U1 (de) Vorrichtung zur Online-Herstellung von SC-A-Papier
EP0967324B1 (fr) Procédé pour le lissage d' une bande de papier
EP1081276A2 (fr) Système de séchage
DE3920176A1 (de) Walze und verfahren zu deren betrieb
WO2011000529A1 (fr) Calandre servant au traitement d’un produit en bande
DE69703610T2 (de) Verfahren zum kalendrieren einer papierbahn und kalender zur durchführung des verfahrens
EP1314819B1 (fr) Calandre et procédé pour le lissage de bandes de papier ou carton
DE102006037358B4 (de) Kalanderanordnung
WO2011000530A2 (fr) Calandre pour lisser une bande de papier
DE69721830T2 (de) Verfahren und vorrichtung zur behandlung einer faserbahn
EP1314820B1 (fr) Calandre pour le lissage d' une bande fibreuse
EP1342840B1 (fr) Calandre et procédé de lissage d'une bande fibreuse
EP1314818B1 (fr) Appareil et procédé pour lisser une bande de papier ou de carton
EP1314667B2 (fr) Méthode pour enrouler une bande de papier ou carton
DE10157691B4 (de) Kalander und Verfahren zum Glätten einer Faserstoffbahn
DE10157694B4 (de) Glättzylinderanordnung
DE10157686B4 (de) Kalander und Verfahren zum Glätten einer Papier- oder Kartonbahn
EP1785524A1 (fr) Dispositif de lissage d'une bande fibreuse
DE102016201828B4 (de) Vorrichtung und Verfahren zur Behandlung einer Faserstoffbahn
EP1394320B1 (fr) Dispositif de pressage
EP1426487A1 (fr) Calandre à pince allongée
DE3321214A1 (de) Presseinrichtung fuer bahnfoermiges gut
EP1529877A1 (fr) Rouleau pour le traitement thermique d'une bande
EP1533416B1 (fr) Calandre à pince allongée

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

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 IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

17P Request for examination filed

Effective date: 20080813

AKX Designation fees paid

Designated state(s): AT DE FI IT

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20140204

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20140617