EP1318235A2 - Procédé et calandre pour le lissage d' une bande fibreuse - Google Patents

Procédé et calandre pour le lissage d' une bande fibreuse Download PDF

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Publication number
EP1318235A2
EP1318235A2 EP02024768A EP02024768A EP1318235A2 EP 1318235 A2 EP1318235 A2 EP 1318235A2 EP 02024768 A EP02024768 A EP 02024768A EP 02024768 A EP02024768 A EP 02024768A EP 1318235 A2 EP1318235 A2 EP 1318235A2
Authority
EP
European Patent Office
Prior art keywords
roller
web
nip
speed
jacket
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
EP02024768A
Other languages
German (de)
English (en)
Other versions
EP1318235B1 (fr
EP1318235A3 (fr
Inventor
Rüdiger Dr. Kurtz
Josef Schneid
Thomas Hermsen
Udo Gabbusch
Harald Hess
Rainer Fenske
Alexander Wassermann
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 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 Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1318235A2 publication Critical patent/EP1318235A2/fr
Publication of EP1318235A3 publication Critical patent/EP1318235A3/fr
Application granted granted Critical
Publication of EP1318235B1 publication Critical patent/EP1318235B1/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 for smoothing a Fibrous web, in particular a paper or cardboard web, where the web is passed through a nip.
  • the invention further relates to a calender for smoothing a fibrous web, in particular a paper or Cardboard web, with a nip.
  • Paper or cardboard webs usually have to be in the course of their manufacturing process are smoothed. there a surface should be created that will be better later can be printed.
  • one roller is a soft roller trained, i.e. it shows one within certain limits compliant surface on while the other roller designed as a hard roller with a smooth surface is.
  • the smoothness of the smooth surface should decrease then emboss on the surface of the web.
  • the invention has for its object the smoothness to improve the web.
  • This task is carried out in a method of the type mentioned at the beginning kind of solved that one as a nip one Breitnip chooses between a roller and a circumferential pressed against the roller by a support shoe Coat is formed, and that one with the roller a peripheral speed that operates from the rotational speed of the coat deviates.
  • the coat can be designed in different ways.
  • One option is to use a relatively stiff one Coat that is elastic enough to adhere to the Adjust the curvature of the roller, but otherwise practical rotates like a roller. This coat can be provided with washers on the front.
  • Another One option is to use a less rigid one Belt that is circulated over support rollers with the pulleys practically defining a polygon. Such a band can also be relatively thin his.
  • the roller is preferably rotated at a higher peripheral speed than the coat.
  • the roller scored so a certain lead over the coat. This is easier to implement because the roller is lighter can drive as the coat.
  • the roller is preferably heated. A heated one The roller emits heat to the web in the wide nip. The heat promotes the smoothing process so that you get an even better one Watch the smoothness increase of the web in the nip.
  • the roller is preferably rotated at a peripheral speed, which is greater than the running speed the train. This ensures that actually a friction smoothing on the side of the track takes place, which rests on the roller.
  • the jacket from a material at least its coefficient of friction with the web is 1.5 times greater than the coefficient of friction the web opposite the surface of the roller. This ensures that the main relative movement between the web and the roller, i.e. the element limiting the wide nip with the smoother surface. The web will run at the higher speed the roller, so to speak, held onto the jacket, because the frictional forces are greater here.
  • the task is with a calender of the aforementioned Art solved in that the nip as a wide nip is formed between a roller and a circumferential pressed against the roller by a support shoe Sheath is formed, and that the roller is a first Speed control device and the Sheath a second speed control device having both speed influencing devices different peripheral speeds of roller and jacket.
  • This design has the advantage that the web in the wide nip with much lower compressive stresses acted upon as in a normal nip that is between two rollers is formed.
  • the decrease in Compressive stress is compensated for by the increased Dwell time of the web in the Breitnip, caused by a greater extension of the wide nip in the circumferential direction given is.
  • the different speeds are influenced by the speed control devices realized both as a drive can also be designed as a brake.
  • the Control of jacket and roller speeds is relatively easy to implement in this way.
  • the jacket preferably has one opposite the web larger coefficient of friction than the roller the web on. This means that if there is a difference in the peripheral speeds of roller and If the roller moves relative to the web rather than the coat relative to the web. Because the roller usually then has the smoother surface an improved friction smoothing.
  • the roller is preferably heated. Via a heated The roller can apply heat to the web in the wide nip, which further promotes the smoothing process.
  • the jacket preferably has a brake.
  • the The roller can be driven instead. Because an additional Usually drive through the web that through which Breitnip runs, is the brake on the coat a relatively easy way to speed up of the coat differently than that Roller speed.
  • the calender 1 has a roller 3, which is a hard, smooth Has surface, for example a polished Steel roll.
  • the roller 3 does not work with a second one Roll together, but with a coat 4, the under the effect of a support shoe 5 over a predetermined one Circumferential area pressed against the surface of the roller 3 becomes.
  • the support shoe 5 has a pressure surface 6, whose curvature is adapted to the curvature of the roller 3 is.
  • the pressure surface 6 is lubricated, for example through hydrostatic lubrication so that the jacket 4 can slide over the support shoe 5 with little friction.
  • the Jacket 4 is so flexible and resilient that he from the one that is usually prevalent over its scope convex shape in the area of the support shoe 5 a can take on a concave shape.
  • the coat 4 is usually formed from a plastic.
  • the jacket 4 is guided over support rollers 7, 8, 9, so that the peripheral surface of the jacket 4 practically one circulation in the way the circumferential surface of a roller describes.
  • the smoothing process is also supported by a heating device 12, which acts on the roller 3.
  • the heater is here acting on the roller 3 from the outside Heater shown.
  • This heater 12 can, for example, inductively, with infrared rays, with hot air or in some other way from the outside Roller 3 act.
  • this heater 12 or in addition to such a heater 12 it is also possible to supply a heat transfer medium to the roller 3, for example through peripheral holes that arranged in the vicinity of the outer diameter of the roller 3 are.
  • the roller 3 is thus a heated roller Give off heat to the continuous web 2 in the Breitnip 10 can.
  • a control device 13 is provided the the peripheral speed of the roller 3 on the one hand and the peripheral speed of the jacket 4 on the other hand controls.
  • the control device 13 acts on this a drive 14 of the roller 3 and on a brake 15, with one of the support rollers 7-9, preferably that Breitnip 10 closest in the feed direction Support roller 9 is braked.
  • the roller 3 has a higher rotational speed receives as the coat 4.
  • the speed differences can be significant.
  • the roller 3 can rotate so that its peripheral speed is three times faster than the peripheral speed of the coat 4.
  • the roller 3 also rotates at a higher peripheral speed than the speed of the web 2.
  • the jacket 4 compared to the Web has a greater coefficient of friction than the roller 3 opposite the web 2.

Landscapes

  • Paper (AREA)
EP20020024768 2001-11-24 2002-11-07 Procédé et calandre pour le lissage d' une bande fibreuse Expired - Lifetime EP1318235B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10157692 2001-11-24
DE2001157692 DE10157692A1 (de) 2001-11-24 2001-11-24 Verfahren und Kalander zum Glätten einer Faserstoffbahn

Publications (3)

Publication Number Publication Date
EP1318235A2 true EP1318235A2 (fr) 2003-06-11
EP1318235A3 EP1318235A3 (fr) 2003-09-10
EP1318235B1 EP1318235B1 (fr) 2007-05-09

Family

ID=7706846

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020024768 Expired - Lifetime EP1318235B1 (fr) 2001-11-24 2002-11-07 Procédé et calandre pour le lissage d' une bande fibreuse

Country Status (2)

Country Link
EP (1) EP1318235B1 (fr)
DE (2) DE10157692A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004050992A2 (fr) * 2002-11-27 2004-06-17 Kimberly-Clark Worldwide, Inc. Produits en papier de soie enroules, tres gonflant, presentant une douceur et une solidite elevees
US6887348B2 (en) 2002-11-27 2005-05-03 Kimberly-Clark Worldwide, Inc. Rolled single ply tissue product having high bulk, softness, and firmness

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1179102A (en) * 1965-11-24 1970-01-28 Walmsleys Bury Ltd Machine Supercalender.
FR2325764A1 (fr) * 1975-09-27 1977-04-22 Voith Gmbh Appareil pour lisser et lustrer du papier, carton, etc., en feuille continue
FR2588293A1 (fr) * 1985-10-04 1987-04-10 Waertsilae Oy Ab Ensemble de calandrage, tel que par exemple une supercalandre
WO2001083883A1 (fr) * 2000-04-18 2001-11-08 Metso Paper, Inc. Procede de calandrage d'une bande de carton

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3920204A1 (de) * 1988-10-31 1990-05-10 Escher Wyss Gmbh Verfahren zum glaetten einer papier- oder kartonbahn

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1179102A (en) * 1965-11-24 1970-01-28 Walmsleys Bury Ltd Machine Supercalender.
FR2325764A1 (fr) * 1975-09-27 1977-04-22 Voith Gmbh Appareil pour lisser et lustrer du papier, carton, etc., en feuille continue
FR2588293A1 (fr) * 1985-10-04 1987-04-10 Waertsilae Oy Ab Ensemble de calandrage, tel que par exemple une supercalandre
WO2001083883A1 (fr) * 2000-04-18 2001-11-08 Metso Paper, Inc. Procede de calandrage d'une bande de carton

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004050992A2 (fr) * 2002-11-27 2004-06-17 Kimberly-Clark Worldwide, Inc. Produits en papier de soie enroules, tres gonflant, presentant une douceur et une solidite elevees
WO2004050992A3 (fr) * 2002-11-27 2004-12-02 Kimberly Clark Co Produits en papier de soie enroules, tres gonflant, presentant une douceur et une solidite elevees
US6887348B2 (en) 2002-11-27 2005-05-03 Kimberly-Clark Worldwide, Inc. Rolled single ply tissue product having high bulk, softness, and firmness
US6893535B2 (en) 2002-11-27 2005-05-17 Kimberly-Clark Worldwide, Inc. Rolled tissue products having high bulk, softness, and firmness
AU2003293176B2 (en) * 2002-11-27 2008-06-19 Kimberly-Clark Worldwide, Inc. Rolled tissue products having high bulk, softness and firmness
US7497925B2 (en) 2002-11-27 2009-03-03 Kimberly-Clark Worldwide, Inc. Shear-calendering processes for making rolled tissue products having high bulk, softness and firmness
US7497926B2 (en) 2002-11-27 2009-03-03 Kimberly-Clark Worldwide, Inc. Shear-calendering process for producing tissue webs

Also Published As

Publication number Publication date
EP1318235B1 (fr) 2007-05-09
DE10157692A1 (de) 2003-06-12
EP1318235A3 (fr) 2003-09-10
DE50210110D1 (de) 2007-06-21

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