EP0936307A2 - Section de séchage et procédé de fonctionnement d' une telle section de séchage - Google Patents

Section de séchage et procédé de fonctionnement d' une telle section de séchage Download PDF

Info

Publication number
EP0936307A2
EP0936307A2 EP98123743A EP98123743A EP0936307A2 EP 0936307 A2 EP0936307 A2 EP 0936307A2 EP 98123743 A EP98123743 A EP 98123743A EP 98123743 A EP98123743 A EP 98123743A EP 0936307 A2 EP0936307 A2 EP 0936307A2
Authority
EP
European Patent Office
Prior art keywords
web
dryer section
roller
shrinkage
material 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.)
Withdrawn
Application number
EP98123743A
Other languages
German (de)
English (en)
Other versions
EP0936307A3 (fr
Inventor
Gerhard Kotitschke
Markus Oechsle
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
Voith Sulzer Papiertechnik 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, Voith Sulzer Papiertechnik Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP0936307A2 publication Critical patent/EP0936307A2/fr
Publication of EP0936307A3 publication Critical patent/EP0936307A3/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • D21F5/042—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices

Definitions

  • the invention relates to a method for operating a dryer section and a dryer section of a machine for producing a material web, in particular paper or cardboard web, with the dryer section at least a drying group with at least one drying cylinder and comprises at least one web guiding device around which the material web is meandering around. It also relates to a roller, in particular usable as a web guiding device in such a dryer section is.
  • Dryer sections of the type mentioned are known. They include a number of drying cylinders and web guiding devices, mostly Web guide rollers around which the material web is guided in a meandering manner.
  • the material web in the area of the drying cylinders is mostly between a conveyor or sieve belt and the drying cylinders firmly clamped.
  • the railway In the area of the railway guidance systems, the railway is usually used fixed by means of vacuum on a conveyor belt or screen belt. This makes possible a runability in the dryer section, and the shrinking of the Material web is hindered. That by the shrinkage-disabled Drying caused steep shrinkage gradients at the edges also lead to thicker edges with a rougher surface. This leads to problems in the further processing of the material web, e.g. in order units, printing machines, etc. It is also already known separation points open between the different drying groups to provide or reduce or switch off the vacuum, whereby the material web is less fixed in places and can shrink. However, the aforementioned problems are not yet the desired ones Way solved.
  • the aim of the invention is to provide a method and a dryer section of the entry mentioned type to create that with high runability and under Avoid steep shrinkage gradients at the edges of the web Ensure the transverse shrinkage of the material web is as uniform as possible.
  • a roller is to be created, in particular as a web guiding device is suitable for such a dryer section.
  • the object is achieved according to the invention solved that the resultant in the web at right angles to the web running direction Shrinkage is adjusted or controlled in that at least one, preferably several areas are created in which in each case an at least substantially free, unimpeded shrinkage the material web is possible.
  • the transverse shrinkage profile is preferably determined by the number of Areas of free shrinkage and / or their position within the dryer section controlled and / or regulated.
  • shrinkage behavior is all the better the greater the number of areas of free, unrestricted shrinkage is selected, but the maximum number also depends on the desired runability is to be selected.
  • the transverse shrinkage course controlled or regulated so that in particular at least at the edges of the web viewed transversely to the web running direction gives essentially flat shrinkage gradient.
  • the task according to the invention is thereby achieved solved that in the web of material transverse to the web running direction resulting shrinkage course by creating at least one, preferably several areas can be set, in each of which at least one essentially free, unimpeded shrinkage of the material web is possible.
  • the material section is the dryer section at least in an initial area the dryer section is continuously supported by a belt and thereby at least also around the first web guiding device viewed in the web running direction led around together with the sieve belt, being around at least one web guiding device on a cushion of gaseous medium guided around without contact and / or at least at one point by blowing from the sieve belt side from a gaseous medium is acted upon to thereby create an area in each case in which an at least essentially free, unimpeded shrinkage of the Material web is possible.
  • the number of areas of free shrinkage and / or their Position within the dryer section preferably chosen so that especially at the edges of the web at right angles to the web running direction considered at least essentially gives a flat shrinkage gradient.
  • the shrinkage is thus freed up by the number of areas Shrinkage and / or their position controlled.
  • Such areas can installed along the entire dryer section. Thereby can as before, a relatively high runability can be ensured.
  • the dryer section is replaced by at least one single-tier dryer group is formed. It is preferably as a whole single-tier dryer section.
  • the single-tier dryer groups or the single-tier dryer section can be felted at the top or bottom be.
  • Drying section is at least one web guiding device through one drilled roller formed to produce a cushion of gaseous Medium can be used as a blowing roller. After the one drilled around one Roll of material passed around on the pad produced gaseous medium such as air in particular, it can float in this Shrink the area unhindered.
  • the drilled roller in at least one area one of the two roller ends provided edge zone between one Blow mode and suction mode is switchable. With an expedient practical embodiment, it is across its entire width a blowing mode and a suction mode switchable.
  • At least one stationary web guiding device is preferably provided, around the material web on a cushion of gaseous medium without contact is led around.
  • Such a so-called airturn can in particular, be provided with corresponding blowing zones.
  • a transfer zone in the relevant edge area for the material web, e.g. a suction zone to be provided.
  • At least one floating dryer is advantageously provided.
  • the arrangement can be such that the material web is alternately supported with hot air from both sides.
  • the material web is at least one between a drying cylinder and a web guiding device blown from the side of the sieve belt from a gaseous medium.
  • drying groups it is basically, for example also possible, one between at least two drying groups to provide an open separation point. This can be the case, for example, with higher basis weights of the material web in question may be appropriate.
  • the roller according to the invention is characterized in that it has a drilled one Has roll shell and a connectable to a pressure fluid source Main zone and one in the area of one of the two roller ends provided edge zone and that at least the edge zone optionally connectable to a pressure fluid source or a vacuum source is.
  • Such a drilled roller is particularly advantageous as a web guiding device suitable for the dryer section according to the invention.
  • the main zone is optionally connected to a source of pressurized fluid or a vacuum source can be connected.
  • This drilled roller is conveniently between the main zone and a peripheral wall is provided, the at least one has closable opening over which the edge zone with the main zone is connectable.
  • one is preferred provided as a slide closing element through which optionally either the opening leading to the main zone or one preferably a connection opening leading to a vacuum source can be closed, wherein in the two end positions of this closing element one of the both openings are closed and the other is released.
  • FIG. 1 shows a purely schematic partial illustration of a dryer section 10 a machine for producing a material web, here a paper web 12, with at least one drying group 14, the multiple drying cylinders 16 and several web guiding devices 18, 20 comprises.
  • the paper web 12 together with a sieve belt 22 meandering around the Drying cylinder 16 and the web guide 18, 20 passed around.
  • this paper web 12 is so the drying cylinder 16 passed around that between this and the Sieve belt 22 lies.
  • At least in the initial area of the dryer section 10 is the paper web 12 supported by the sieve belt 22, preferably also around the in The web running direction is considered together with the first web guiding device this sieve belt 22 is guided around.
  • the paper web 12 is within the dryer section 10 by at least a web guiding device on a cushion of gaseous medium guided around without contact and / or through at least one point Blown from the sieve belt side with a gaseous medium to create an area in which one at least essentially free, unimpeded shrinkage of the paper web 12 is possible.
  • the number of areas is free shrink and / or their position within the dryer section 10 selected so that in particular at the edges of the web at right angles to the web running direction considers at least a substantially flat shrinkage gradient results.
  • the drying section 10 can in particular by at least one row Drying group 14 may be formed. It is preferably as a single row overall Dryer section trained.
  • the web guiding device is 18th by a suction roll and the web guide 20 by another bored under described in more detail, usable in particular as a blowing roller Roll 20 formed around which the paper web 12 gaseous on a cushion Medium, in particular air, is guided around without contact, around an area at least substantially more freely, unhindered To create shrinkage of the paper web 12.
  • the drilled roller 20 comprises a main zone 26 which can be connected to a pressure fluid source 24 and also a main zone 26 Edge zone 28 provided in the area of one of its two ends the edge zone 28 optionally via the main zone 26 to the pressurized fluid source 24 or can be connected to a vacuum source 30, where it is a connection to the vacuum source 30 serves as a transfer zone.
  • a partition 32 is between the main zone 26 and the peripheral zone 28 provided, which is provided with a closable opening 34, via which the edge zone 28 during the blowing operation with that to the pressure fluid source 24 connected main zone 26 is connected.
  • this opening 34 becomes when the edge zone is connected to the vacuum source 30 28 closed.
  • a closing element designed as a slide 36 provided by which either the main zone 26 leading opening 34 or a connection to the vacuum source 30th Manufacturing port 38 is closable. In the two end positions this adjustable along the roller in the direction of arrow F. slide-like closing element is one of the two openings 34, 38 closed and the other released.
  • the dryer section 10 can be by at least one single-tier dryer group 14 be formed, preferably as a whole as a single-tier dryer section 10 is formed.
  • a rotating blowing roller 20 can also be a stationary web guiding device be provided around which the material web 12 on a cushion gaseous medium is guided around without contact.
  • the installation of at least one floating dryer is also conceivable, whereby in this case the paper web 12 alternately, for example, of both Sides are supported with hot air.
  • the Material web 12 also on at least one between a drying cylinder 16 and a web guide 18, 20 located by blowing a gaseous medium is applied from the sieve belt side be.
  • the material web 12 is located transversely to
  • the direction of shrinkage resulting from the web running direction is adjusted in that at least one, preferably several areas are created in which in each case an at least substantially free, unimpeded shrinkage the material web 12 is possible.
  • the transverse shrinkage course preferably by the number of areas of free shrinkage and / or controlled their position within the dryer section and / or regulated.
  • Figure 3 shows a purely schematic partial representation of a further embodiment of a dryer section, in which at least one web guiding device is formed by a roller 40, the peripheral speed of which is greater than the web speed, the speed difference being selected so large that an air cushion is generated on which the Material web 12 is guided around the roller 40.
  • the roller 40 is arranged between two drying cylinders 16 of essentially the same diameter, the speed of rotation v 2 of the roller 40 being substantially greater than the speed of rotation v 1 of the two drying cylinders 16.
  • blown air operation is not excluded.
  • a drilled roller which can be used in particular as a blowing roller, can also be used as roller 40.
  • FIG 4 is a purely schematic representation between two Separation point provided in dry groups of a further embodiment shown a dryer section.
  • the material web 12 is in the area of open separation point without a belt around a drilled roller 20 is, which is particularly operable as a blowing roller.
  • the material web 12 both between a preceding drying cylinder 16 and the drilled roller 20 as well as between the drilled roller 20 and a subsequent drying cylinder 16 in the manner shown by blowing a gaseous medium.
  • Figure 5 shows a purely schematic representation of one between two dryer groups provided separation point of a further embodiment a dryer section.

Landscapes

  • Paper (AREA)
  • Drying Of Solid Materials (AREA)
EP98123743A 1998-02-12 1998-12-14 Section de séchage et procédé de fonctionnement d' une telle section de séchage Withdrawn EP0936307A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19805723 1998-02-12
DE19805723A DE19805723A1 (de) 1998-02-12 1998-02-12 Trockenpartie sowie Verfahren zum Betreiben einer solchen Trockenpartie

Publications (2)

Publication Number Publication Date
EP0936307A2 true EP0936307A2 (fr) 1999-08-18
EP0936307A3 EP0936307A3 (fr) 2000-05-24

Family

ID=7857499

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98123743A Withdrawn EP0936307A3 (fr) 1998-02-12 1998-12-14 Section de séchage et procédé de fonctionnement d' une telle section de séchage

Country Status (3)

Country Link
US (1) US6145218A (fr)
EP (1) EP0936307A3 (fr)
DE (1) DE19805723A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104913613A (zh) * 2015-06-10 2015-09-16 长兴宏峰纺织印染有限公司 一种纺织布节能烘干机
WO2021155970A1 (fr) * 2020-02-04 2021-08-12 Voith Patent Gmbh Procédés de fabrication d'une bande de revêtement
AT524347A1 (de) * 2020-10-26 2022-05-15 Valmet Technologies Oy Laufeigenschaftsbauteil für eine trockenpartie

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI104001B (fi) * 1998-06-26 1999-10-29 Valmet Corp Kuivatusosa
DE19959669A1 (de) * 1999-12-10 2001-06-13 Voith Paper Patent Gmbh Trockenpartie
US6305098B1 (en) * 2001-01-29 2001-10-23 Officine Meccaniche Giovanni Cerutti S.P.A. Rotary printing press drying assembly roller
CN102668020B (zh) * 2009-09-15 2015-09-30 Ers电子有限公司 剥除辊、用于从盘形工件上揭下薄膜的设备和方法

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI73478C (fi) * 1985-09-24 1987-10-09 Valmet Oy Anordning foer kontaktloes stabilisering, uppbaering och/eller torkning av en roerlig bana.
FI91900C (fi) * 1990-12-17 1994-08-25 Valmet Paper Machinery Inc Menetelmä paperikoneen kuivatusosalla paperin käyristymistaipumuksen vähentämiseksi ja menetelmän toteuttamiseen tarkoitettu kuivatusosa
AT397111B (de) * 1991-12-19 1994-02-25 Andritz Patentverwaltung Verfahren und vorrichtung zur führung von faserstoffbahnen
US5884415A (en) * 1992-04-24 1999-03-23 Beloit Technologies, Inc. Paper making machine providing curl control
SE9301512L (sv) * 1993-05-03 1994-11-04 Fibertech Ab Sätt och torkvira vid papperstorkning
US5515619A (en) * 1993-08-06 1996-05-14 J.M. Voith Gmbh Flexibly mounted sealing strips of a vacuum roll for a web dryer
FI103820B (fi) * 1993-11-30 1999-09-30 Valmet Paper Machinery Inc Menetelmät paperirainan kuivatuksessa sekä paperikoneen kuivatusosat
FI93036C (fi) * 1994-03-29 1995-02-10 Valmet Paper Machinery Inc Menetelmä paperirainan kontaktikuivatuksessa sekä paperikoneen kuivatusosa
DE4415581C2 (de) * 1994-05-04 1995-12-07 Voith Gmbh J M Papier-Streichvorrichtung
US5771603A (en) * 1994-09-16 1998-06-30 Voith Sulzer Papiermashinen Gmbh Dryer section
DE19548307A1 (de) * 1995-12-22 1997-06-26 Voith Sulzer Papiermasch Gmbh Trockenpartie
DE29521501U1 (de) * 1995-12-22 1997-05-28 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Trockenpartie
DE29601543U1 (de) * 1996-01-30 1996-03-28 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Vorrichtung zum Führen einer Faserstoffbahn in einer einreihigen Trockenpartie
DE19605195A1 (de) * 1996-02-13 1997-08-14 Voith Sulzer Papiermasch Gmbh Trockenpartie
US5913587A (en) * 1996-02-28 1999-06-22 Valmet Corporation Dryer sections with intermediate calendering in a paper machine
DE29613809U1 (de) * 1996-08-09 1996-09-26 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Vorrichtung zum Trocknen einer Faserstoffbahn
DE29616569U1 (de) * 1996-09-25 1997-01-02 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Trockenpartie
US5983523A (en) * 1997-03-27 1999-11-16 Valmet Corporation Method for controlling curl of paper in a dryer section of a paper machine and a paper or board machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104913613A (zh) * 2015-06-10 2015-09-16 长兴宏峰纺织印染有限公司 一种纺织布节能烘干机
CN104913613B (zh) * 2015-06-10 2017-04-12 长兴宏峰纺织印染有限公司 一种纺织布节能烘干机
WO2021155970A1 (fr) * 2020-02-04 2021-08-12 Voith Patent Gmbh Procédés de fabrication d'une bande de revêtement
AT524347A1 (de) * 2020-10-26 2022-05-15 Valmet Technologies Oy Laufeigenschaftsbauteil für eine trockenpartie
AT524347B1 (de) * 2020-10-26 2022-11-15 Valmet Technologies Oy Laufeigenschaftsbauteil für eine trockenpartie

Also Published As

Publication number Publication date
DE19805723A1 (de) 1999-08-19
US6145218A (en) 2000-11-14
EP0936307A3 (fr) 2000-05-24

Similar Documents

Publication Publication Date Title
DE69019728T2 (de) Vorrichtung zum Trocknen einer Bahn.
EP1072551B1 (fr) Procédé de pliage et ensemble d'une machine de pliage dans une machine à imprimer rotative pour journaux
DE3807857C2 (fr)
DE4218595C2 (de) Maschine zur Herstellung einer Papierbahn
DE2753201A1 (de) Verfahren fuer die behandlung einer papierbahn in der nasspartie einer papiermaschine
DE69107625T3 (de) Trocknungsvorrichtung.
DE4407405C2 (de) Trockenpartie
DE69422423T2 (de) Zusammenbau für eine papierbahnbeschichtungsstrasse
EP0936307A2 (fr) Section de séchage et procédé de fonctionnement d' une telle section de séchage
EP0780513B1 (fr) Procédé pour fabrication d'une bande
DE69416168T2 (de) Papierbahntrockner
EP0989233A2 (fr) Section de séchage et sécheur à convection pour une telle section de séchage
DE2256087C3 (de) Vorrichtung zum Trocknen einer auf einem im wesentlichen eben geführten Träger aufliegenden Warenbahn
DE4328555A1 (de) Trockenpartie
EP1156154A2 (fr) Dispositif pour la fabrication d' une bande de matériau
DE69419529T2 (de) Trockenpartie
DE3545270C1 (de) Breitstreckvorrichtung
DE19602697B4 (de) Trockenpartie
EP1158092A2 (fr) Section de séchage
DE9100762U1 (de) Trockenpartie
DE19548307A1 (de) Trockenpartie
DE102007038133A1 (de) Vorrichtung zur Herstellung einer Faserstoffbahn, insbesondere Papier-, Karton- oder Tissuebahn
EP1099794B1 (fr) Procédé et dispositif pour enfiler une bande
DE1295349B (de) Papiermaschine
DE4133768A1 (de) Kalander einer papier- oder kartonmaschine

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: A2

Designated state(s): DE FI SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

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

Owner name: VOITH PAPER PATENT GMBH

17P Request for examination filed

Effective date: 20001124

AKX Designation fees paid

Free format text: DE FI SE

17Q First examination report despatched

Effective date: 20030724

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: 20031205