EP0672783A2 - Section de séchage - Google Patents

Section de séchage Download PDF

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Publication number
EP0672783A2
EP0672783A2 EP95102670A EP95102670A EP0672783A2 EP 0672783 A2 EP0672783 A2 EP 0672783A2 EP 95102670 A EP95102670 A EP 95102670A EP 95102670 A EP95102670 A EP 95102670A EP 0672783 A2 EP0672783 A2 EP 0672783A2
Authority
EP
European Patent Office
Prior art keywords
drying
smoothing
group
paper web
dryer
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
EP95102670A
Other languages
German (de)
English (en)
Other versions
EP0672783B1 (fr
EP0672783A3 (fr
Inventor
Erwin Brunmair
Alfred Dr. Bubik
Johann Moser
Harald Hess
Herbert Holik
Helmut Stieb
Werner Leitenberger
Thomas Merath
Elmer Dr. Weisshuhn
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 Sulzer Papiermaschinen 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 Sulzer Papiermaschinen GmbH filed Critical Voith Sulzer Papiermaschinen GmbH
Publication of EP0672783A2 publication Critical patent/EP0672783A2/fr
Publication of EP0672783A3 publication Critical patent/EP0672783A3/fr
Application granted granted Critical
Publication of EP0672783B1 publication Critical patent/EP0672783B1/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
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders
    • D21F5/04—Drying on cylinders on two or more drying cylinders
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus

Definitions

  • the invention relates to a dryer section of a paper machine according to the preamble of claims 1 and 2.
  • a drying section is known from US Pat. No. 4,934,067, in which the drying groups are connected in that the drying fabrics of the two successive groups are brought together in the transition area and brought into contact with the web in between.
  • the dryer fabrics of the two dryer groups are guided over suction rolls, which are arranged after the last or before the first drying cylinder.
  • Such devices counteract the web flutter and web break by avoiding a free pull of the paper web.
  • E-PS 141 614 pre-smooth the paper web on a heated drying cylinder, the paper web being guided together with a felt through the gaps formed by press rolls and the smoothing cylinder.
  • the disadvantage here is that the paper web is only pre-smoothed on one side.
  • the object of the invention is therefore to create a dryer section which has as little free draft as possible between the dryer groups and which allows the paper web to be pre-smoothed on both sides with little effort.
  • a solution consists in that at the end of a drying group or at the beginning of the subsequent drying group there is a smoothing roller which forms a smoothing gap with the drying cylinder of the adjacent drying group.
  • the smoothing roller should have a much smaller diameter than the drying cylinder.
  • the smoothing rollers are deflection-controlled and have an elastic cover. On the one hand, this makes it possible to influence the smoothing profile transversely to the paper web in the desired manner and, on the other hand, to gently smooth the paper web by means of a "soft" smoothing gap. In this context, it is also advisable to form a wide smoothing gap by means of a correspondingly designed smoothing roller, as can be seen, for example, in EP 345 501.
  • the smoothing gap is formed by two smoothing rollers, there are a wide variety of possible combinations in accordance with the requirements for the smoothing result or depending on the properties of the incoming paper web. It should be noted here only the use of a smoothing roller with a rigid roller shell and another with an elastic cover, only one of the two smoothing rollers being deflection-controlled and preferably the smoothing roller being heated with a rigid roller shell.
  • At least one of the two smoothing rollers or drying cylinders can be moved, for example using levers, to separate the drying groups is stored.
  • the paper web In order to adequately guide the paper web over the entire length of the dryer section, the paper web should partially wrap around the two smoothing rollers or drying cylinders forming a smoothing gap. It is also advisable if the paper web is in contact with the dryer fabric of the respective dryer group in as large a section of the wrapping area as possible.
  • the length of the free draft can be adjusted by changing the course of the felt, in particular by changing the position of at least one deflecting roller in the area between two drying groups.
  • the exemplary embodiments according to FIGS. 1 and 2 have in common that the dryer section Consists of several dryer groups 1 ', 1''and1''', in which the paper web 2 together with an endless dryer fabric 3 ', 3''or1', 1 '' or 1 '''assigned to the respective dryer group 3 '''is guided alternately over deflection rollers 4, which are preferably designed as suction rollers, and heated drying cylinders 5, 5' or 5 ''', the paper web 2 being between the respective dryer fabric 3', 3 '' or 3 ''' and the relevant drying cylinder 5, 5 'and 5''' and in the drying groups 1 ', 1''and1''' only one side of the paper web 2 with the drying cylinders 5, 5 'and 5 '''comes into contact.
  • deflection rollers 4 which are preferably designed as suction rollers, and heated drying cylinders 5, 5' or 5 ''', the paper web 2 being between the respective dryer fabric
  • FIG. 1 there is a smoothing roller 10 ′′ at the beginning and at the end of a drying group 1 ′′, which corresponds to the last drying cylinder 5 ′ of the previous 1 ′ or to the first drying cylinder 5 ′′ ′′ subsequent drying group 1 '' 'forms a smoothing gap through which only the paper web 2 is guided.
  • a smoothing roller which interacts with the drying cylinder of the adjacent drying group 1 ', 1' 'and 1' '' only at the beginning or only at the end of a drying group 1 ', 1' 'and 1' '' .
  • the smoothing rollers 10 ', 10' 'and 10' '' generally have a much smaller diameter than the drying cylinders 5, 5 'and 5' '' and can be deflection-controlled, heated and / or provided with an elastic cover depending on the requirements his.
  • the second exemplary embodiment shown in FIG. 2 shows a further possibility of accomplishing the task with similar means.
  • the adjacent dryer groups 1 ', 1' 'and 1' '' each have a smoothing roller 10 ', 10 at the respective start or end of the dryer group 1', 1 '' or 1 '' ' '' or 10 '' ', which together form a smoothing gap through which the paper web 2 is also exclusively guided.
  • the smoothing rollers 10 ′, 10 ′′ and 10 ′′ ′′ can, as mentioned in the description of the first exemplary embodiment, be designed, but it is of course corresponding here the requirements gives possibilities to design the smoothing rollers 10 ', 10''and10''', each forming a smoothing gap, in different ways.
  • the paper web 2 in the largest possible section of the looping area is in contact with the dryer fabric 3 ', 3' 'or 3' '' of the respective dryer group 1 ', 1' 'or 1' ''.
  • blowing devices 8 are preferably used, which - as shown - can be attached to scraper devices 9 for detaching the paper web 2.
  • the device also offers the possibility of saving deflection rollers 4 if, as can be seen, for example, in FIG. 1 when it is transferred to the drying group 1 ′′ ′′, the paper web 2 is not deflected between the drying cylinder 5 and the smoothing roller 10 ′′ .
  • the subsequent drying group 1 '' ' is a two-pass drying group, consisting of an upper and a lower row of mutually spaced drying cylinders 5, the axes of which are arranged so that they are essentially offset from one another in such a way that in each case one axis lies in a row is located between two adjacent axes in the other row, and in each case one of the upper and one of the lower row of drying cylinders 5 assigned dryer fabric 3 '' '.
  • the dryer fabrics 3 '' ' are guided over deflection rollers 4 each arranged between two drying cylinders 5 in a row and the outer peripheral regions of the drying cylinders 5.
  • the paper web 2 runs in a meandering shape between the upper and lower rows of drying cylinders 5 and is held on the drying cylinders 5 by the drying fabrics 3 '' '.

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  • Paper (AREA)
  • Drying Of Solid Materials (AREA)
  • Amplifiers (AREA)
  • Surgical Instruments (AREA)
  • Led Devices (AREA)
EP95102670A 1994-03-05 1995-02-24 Section de séchage Expired - Lifetime EP0672783B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4407405 1994-03-05
DE4407405A DE4407405C2 (de) 1994-03-05 1994-03-05 Trockenpartie

Publications (3)

Publication Number Publication Date
EP0672783A2 true EP0672783A2 (fr) 1995-09-20
EP0672783A3 EP0672783A3 (fr) 1996-12-18
EP0672783B1 EP0672783B1 (fr) 2001-05-09

Family

ID=6511978

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95102670A Expired - Lifetime EP0672783B1 (fr) 1994-03-05 1995-02-24 Section de séchage

Country Status (7)

Country Link
US (1) US5551164A (fr)
EP (1) EP0672783B1 (fr)
JP (1) JPH08337991A (fr)
AT (1) ATE201071T1 (fr)
CA (1) CA2143912A1 (fr)
DE (2) DE4407405C2 (fr)
FI (1) FI950976A7 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19604675A1 (de) * 1996-02-09 1997-08-14 Voith Sulzer Papiermasch Gmbh Maschine zur Herstellung einer Faserstoffbahn
WO1997032080A1 (fr) * 1996-02-28 1997-09-04 Valmet Corporation Sections de sechage d'une machine a papier, permettant un calandrage intermediaire

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19507374C2 (de) * 1995-03-03 1997-01-09 Voith Sulzer Papiermasch Gmbh Trockenpartie
CA2193554A1 (fr) * 1995-12-22 1997-06-23 Werner Leitenberger Train de sechage d'un appareil pour produire une feuille continue de papier
DE19602492C2 (de) * 1996-01-25 2000-12-07 Voith Sulzer Papiermasch Gmbh Maschine zur Herstellung einer Papier- oder Kartonbahn
US5913587A (en) * 1996-02-28 1999-06-22 Valmet Corporation Dryer sections with intermediate calendering in a paper machine
US6065222A (en) * 1996-02-28 2000-05-23 Valmet Corporation Dryer sections with intermediate calendering in a paper machine
DE19636627A1 (de) * 1996-09-10 1998-03-12 Voith Sulzer Papiermasch Gmbh Glättvorrichtung und Verfahren zur Glättung einer Papierbahn
US5933979A (en) * 1997-10-31 1999-08-10 Beloit Technologies, Inc. Restraint dryer for the drying end of a papermaking machine and a method thereof
EP1304413A3 (fr) 2001-10-18 2004-05-12 Voith Paper Patent GmbH Section de séchage et un appareil de lissage pour la section de séchage
DE10151457A1 (de) * 2001-10-18 2003-04-30 Voith Paper Patent Gmbh Verfahren zum kombinierten Trocknen und Glätten einer Materialbahn und Glättvorrichtung
DE10151456A1 (de) * 2001-10-18 2003-04-30 Voith Paper Patent Gmbh Trockenpartie sowie Glättvorrichtung für eine solche Trockenpartie
US8176650B2 (en) * 2005-12-13 2012-05-15 Kimberly-Clark Worldwide, Inc. Method for warming up or cooling down a through-air dryer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0345501A1 (fr) 1988-05-25 1989-12-13 Valmet Paper Machinery Inc. Presse à pinçage prolongé
US4934067A (en) 1987-02-13 1990-06-19 Beloit Corporation Apparatus for drying a web
WO1992019809A1 (fr) 1991-05-03 1992-11-12 Sulzer-Escher Wyss Gmbh Rouleau a souplesse variable et son utilisation

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1951710A (en) * 1931-11-12 1934-03-20 Burgess Cellulose Company Process and apparatus for drying fibrous sheets
FI54515C (fi) * 1974-05-23 1978-12-11 Valmet Oy Apparatur i en pappersmaskin foer foerbaettrande slaetheten och glansen av papperets eller kartongens yta
FI50263C (fi) * 1974-09-12 1976-01-12 Valmet Oy Laite paperikoneessa paperirainan siirtämiseksi puristinosalta kuivaus osalle.
GB8328354D0 (en) * 1983-10-24 1983-11-23 Black Clawson Int Surface treatment of paper and paperboard
DE3408118A1 (de) * 1984-02-06 1985-08-14 Sulzer-Escher Wyss GmbH, 7980 Ravensburg Nasspresse zum entwaessern einer faserbahn
ES2011381A6 (es) * 1988-08-17 1990-01-01 Garcia Pastor Daniel Proceso mecanico de secado aplicable a la fabricacion de papel.
US5127168A (en) * 1989-07-20 1992-07-07 Pulp And Paper Research Institute Of Canada Method for manufacture of smooth and glossy papers and apparatus
EP0483183B1 (fr) * 1989-07-20 1994-03-16 Pulp and Paper Research Institute of Canada Procede et appareil de fabrication de papiers lisses et satines
DE4004331C1 (fr) * 1990-02-13 1991-04-18 J.M. Voith Gmbh, 7920 Heidenheim, De
DE4012246C1 (fr) * 1990-04-14 1991-06-27 J.M. Voith Gmbh, 7920 Heidenheim, De
DE4112355A1 (de) * 1991-04-16 1992-10-22 Escher Wyss Gmbh Pressenpartie einer papiermaschine
SE470235B (sv) * 1992-05-12 1993-12-13 Valmet Karlstad Ab Press av skotyp
US5355593A (en) * 1992-06-24 1994-10-18 J.M. Voith Gmbh Device for transferring a fiber web
FI95491C (fi) * 1992-12-30 1996-02-12 Valmet Paper Machinery Inc Paperikoneen kuivatusosa
FI98229C (fi) * 1993-08-23 1997-05-12 Valmet Paper Machinery Inc Paperikoneen kuivatusosa

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4934067A (en) 1987-02-13 1990-06-19 Beloit Corporation Apparatus for drying a web
EP0345501A1 (fr) 1988-05-25 1989-12-13 Valmet Paper Machinery Inc. Presse à pinçage prolongé
WO1992019809A1 (fr) 1991-05-03 1992-11-12 Sulzer-Escher Wyss Gmbh Rouleau a souplesse variable et son utilisation

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19604675A1 (de) * 1996-02-09 1997-08-14 Voith Sulzer Papiermasch Gmbh Maschine zur Herstellung einer Faserstoffbahn
DE19604675C2 (de) * 1996-02-09 2001-04-26 Voith Sulzer Papiermasch Gmbh Maschine zur Herstellung einer Faserstoffbahn
WO1997032080A1 (fr) * 1996-02-28 1997-09-04 Valmet Corporation Sections de sechage d'une machine a papier, permettant un calandrage intermediaire
KR100321606B1 (ko) * 1996-02-28 2002-12-02 발메트 코포레이션 중간캘린더링이설치된제지기계의건조기부

Also Published As

Publication number Publication date
EP0672783B1 (fr) 2001-05-09
DE59509234D1 (de) 2001-06-13
EP0672783A3 (fr) 1996-12-18
FI950976A7 (fi) 1995-09-06
CA2143912A1 (fr) 1995-09-06
ATE201071T1 (de) 2001-05-15
JPH08337991A (ja) 1996-12-24
US5551164A (en) 1996-09-03
DE4407405C2 (de) 2000-03-16
FI950976A0 (fi) 1995-03-02
DE4407405A1 (de) 1995-09-07

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