EP1586697A1 - Machine à papier - Google Patents

Machine à papier Download PDF

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Publication number
EP1586697A1
EP1586697A1 EP05101588A EP05101588A EP1586697A1 EP 1586697 A1 EP1586697 A1 EP 1586697A1 EP 05101588 A EP05101588 A EP 05101588A EP 05101588 A EP05101588 A EP 05101588A EP 1586697 A1 EP1586697 A1 EP 1586697A1
Authority
EP
European Patent Office
Prior art keywords
calender
fibrous web
cylinder
drying
machine according
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
EP05101588A
Other languages
German (de)
English (en)
Other versions
EP1586697B1 (fr
Inventor
Rüdiger Dr. Kurtz
Jörg Dr. Rheims
Udo Gabbusch
Joachim Hinz
Ingolf Cedra
Holger Humgerg
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 EP1586697A1 publication Critical patent/EP1586697A1/fr
Application granted granted Critical
Publication of EP1586697B1 publication Critical patent/EP1586697B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D21F5/042—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices
    • D21F5/044—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices using air hoods over the 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 machine for producing a paper, cardboard, Tissue or another fibrous web from a pulp suspension with a a heated cylinder and a pressure hood comprising a dry assembly and a calender for smoothing the fibrous web.
  • moisture gradient calendering In known paper machines, the paper web is more uniform Moisture distribution in all three spatial directions within the paper web for Calender led. Subsequently, for effective calendering to produce a moisture gradient in the direction of the web thickness (z direction) ("moisture gradient calendering ”) usually a steam box for condensate film formation on those paper web page used, the hot roller in Kalandernip assigned.
  • this object is achieved in that the dry arrangement is arranged immediately in front of the calender.
  • the circulating screen of the drying arrangement is due to the cooling in the Pressure hood and / or by an additional cooling enough cold, so it at the contact with the fibrous web in the dry arrangement this on the of the side facing away from the drying cylinder cools down so much that on this page more Moisture in the fibrous web remains as on the other side.
  • this before the calender on a device for moistening the fibrous web be arranged downstream of the side facing away from the drying cylinder to the already existing moisture profile to increase even further.
  • the calender includes a single nip and that a hard and heatable roller of the Glätttechniks the side facing away from the drying cylinder of the fibrous web is facing.
  • a shoe calender is used with advantage in which the moist side of the fibrous web wraps around a heatable roll, against the one non-heated press shoe presses.
  • a calender which comprises a plurality of nips and in which several hard and heatable Rolling the calender of the drying cylinder of the dryer assembly facing away from the fibrous web, wherein between the Heatable rollers each a soft roller is interposed.
  • the temperature and the contact pressure of the Drying cylinder are selected in the dry arrangement so that the Drying cylinder facing side of the fibrous web for the reeling of the Fibrous web required smoothness when passing through the dry assembly receives.
  • the invention thus provides the combination of a dry arrangement and created a calender in such a way that the moist and the cold side of the Dry arrangement, so the pressure hood facing side through the Condensation of the water from the fibrous web and through the cold sieves is generated and thereby also disadvantageously provided with strong wire marks, in the directly following calender, preferably in a hot shoe calender, on the hot calender roll is guided in the nip.
  • the generated by the dry assembly smooth and hot paper side often needs no additional treatment or Re-smoothing.
  • the moisture of the fibrous web at the exit from the drying arrangement on the Sieve-facing side is to optimize so that the resulting Sieve marking by the smoother still can be removed by a very hot roll side hits this side in the nip.
  • a machine for producing a fibrous web 1 comprises a Variety of drying cylinders 2 and guide rollers 3 comprehensive Drying device 4. This is a drying assembly 5 with a heated Drying cylinder 6 and a pressure hood 7 with a containing in this arranged downstream of cooling medium. The dry content of the fibrous web 1 is before entering the drying assembly 5 between 70 and 80%. After this Leaving the drying arrangement it is between 92 and 95%.
  • the fibrous web 1 is in order Deflection rollers 11, 12 to form a trained as Schuhglättwerk calender 13th forwarded.
  • This includes a heated cylinder 14, which with a Shoe roll 15 forms an elongated nip.
  • the fibrous web 1 is between the cylinder 14 and the shoe roll 15 passed such that the wet and provided with the markings of the screen 9 on the shell side of the Cylinder 14 is running and is smoothed by the hot cylinder 14.
  • Between Deflection rollers 11, 12 may additionally one more of the upper side of the fibrous web 1 facing device for moistening the fibrous web 1 are arranged if it already has too high a dry content on the upper side.
  • the fibrous web 1 After the fibrous web 1 has passed through the calender 13, it is in a Winding apparatus wound into a roll.
  • Paper machine (FIG. 2) becomes a pulp suspension from a headbox 16 a gap between two screens 17 and 18 of a Doppelsiebformers 19 fed.
  • the wires 17, 18 run in a wedge shape to each other to and include the pulp suspension between them. This is a first Dewatering of the pulp suspension, and it forms a fiber mat, from the a paper web 21 is created.
  • the twin-wire former 19 is followed by a press section 20.
  • the press section 20 comprises three pressing stations 21, 22, 23.
  • the first two pressing points 21, 22 form a tandem Nipco-Flex press section, in each case a roller 23, 24 cooperates with a shoe press roll 25, 26.
  • the press section 20 follows in the web running direction a guide rollers 27 and Drying cylinder 28 having drying section 29. After the drying section 29 is the paper web 21 between a drying cylinder 29 and a pressure hood 30th a dry assembly 31 passed, which is constructed like the Dry arrangement 5 according to FIG. 1.
  • the paper web 21 enters a calender 32, in which they is smoothed.
  • the calender 32 is of the type disclosed in EP 0 732 445 B1 constructed calender and includes only rollers that the paper web 21st smooth on one side on the upper side when passing through the dry assembly 31 Siebmark isten received.
  • the calender 32 has a roll stack with four rolls 33, 34, 35 and 36.
  • the Roller 33 is heatable, deflection-controlled and has a hard surface.
  • the roller 34 has a soft surface.
  • the roller 35 is heated and has a hard surface, while the roller 36 again has a soft outer surface.
  • the paper web 21 is one-sided on the markings smoothed side and at the same time heated until it is on this page the same degree of dryness and gloss and the same smoothness has been obtained as the opposite side.
  • the paper web 21 via further pulleys to a Winding machine 37 forwarded, in which it is wound into a winding.
  • the Winder 37 can also be used offline from the machine to manufacture the Paper web 21 may be arranged from the pulp suspension.

Landscapes

  • Paper (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
EP05101588A 2004-04-13 2005-03-02 Machine à papier Not-in-force EP1586697B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004017823A DE102004017823A1 (de) 2004-04-13 2004-04-13 Papiermaschine
DE102004017823 2004-04-13

Publications (2)

Publication Number Publication Date
EP1586697A1 true EP1586697A1 (fr) 2005-10-19
EP1586697B1 EP1586697B1 (fr) 2010-05-26

Family

ID=34938857

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05101588A Not-in-force EP1586697B1 (fr) 2004-04-13 2005-03-02 Machine à papier

Country Status (3)

Country Link
EP (1) EP1586697B1 (fr)
AT (1) ATE469264T1 (fr)
DE (2) DE102004017823A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1785524A1 (fr) * 2005-11-12 2007-05-16 Voith Patent GmbH Dispositif de lissage d'une bande fibreuse
EP2295634A3 (fr) * 2009-08-07 2013-09-04 Giorgio Trani Procédé de formation de bande de papier continue extensible dans le sens longitudinal et transversal
AT17730U3 (de) * 2022-07-05 2023-02-15 Voith Patent Gmbh Maschine und Verfahren

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008043704A1 (de) 2008-11-13 2010-05-20 Voith Patent Gmbh Verfahren und Vorrichtung zur Trocknung und Glättung einer Faserstoffbahn

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6189233B1 (en) * 1997-06-03 2001-02-20 Voith Sulzer Papiermaschinen Gmbh Dryer section
WO2001014637A2 (fr) * 1999-08-24 2001-03-01 Metso Paper, Inc. Procede et dispositif destines au traitement de surface d'une bande de papier et/ou d'une bande de carton
US6207019B1 (en) * 1995-08-18 2001-03-27 Abitibi-Price, Inc. Calender hood
US20030089248A1 (en) * 2000-01-28 2003-05-15 Pekka Linnonmaa Method and device for moisturatization of a paper board web in calendering

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6207019B1 (en) * 1995-08-18 2001-03-27 Abitibi-Price, Inc. Calender hood
US6189233B1 (en) * 1997-06-03 2001-02-20 Voith Sulzer Papiermaschinen Gmbh Dryer section
WO2001014637A2 (fr) * 1999-08-24 2001-03-01 Metso Paper, Inc. Procede et dispositif destines au traitement de surface d'une bande de papier et/ou d'une bande de carton
US20030089248A1 (en) * 2000-01-28 2003-05-15 Pekka Linnonmaa Method and device for moisturatization of a paper board web in calendering

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1785524A1 (fr) * 2005-11-12 2007-05-16 Voith Patent GmbH Dispositif de lissage d'une bande fibreuse
EP2295634A3 (fr) * 2009-08-07 2013-09-04 Giorgio Trani Procédé de formation de bande de papier continue extensible dans le sens longitudinal et transversal
AT17730U3 (de) * 2022-07-05 2023-02-15 Voith Patent Gmbh Maschine und Verfahren

Also Published As

Publication number Publication date
DE102004017823A1 (de) 2005-11-03
ATE469264T1 (de) 2010-06-15
EP1586697B1 (fr) 2010-05-26
DE502005009621D1 (de) 2010-07-08

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