EP2160494A1 - Procédé et machine de fabrication d'une bande de papier lisse sur un côté - Google Patents

Procédé et machine de fabrication d'une bande de papier lisse sur un côté

Info

Publication number
EP2160494A1
EP2160494A1 EP08760344A EP08760344A EP2160494A1 EP 2160494 A1 EP2160494 A1 EP 2160494A1 EP 08760344 A EP08760344 A EP 08760344A EP 08760344 A EP08760344 A EP 08760344A EP 2160494 A1 EP2160494 A1 EP 2160494A1
Authority
EP
European Patent Office
Prior art keywords
press
paper web
felt
transfer belt
nip
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
EP08760344A
Other languages
German (de)
English (en)
Other versions
EP2160494B1 (fr
Inventor
Peter Mirsberger
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 EP2160494A1 publication Critical patent/EP2160494A1/fr
Application granted granted Critical
Publication of EP2160494B1 publication Critical patent/EP2160494B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/0281—Wet presses in combination with a dryer roll
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/04—Arrangements thereof
    • D21F3/045—Arrangements thereof including at least one extended press nip

Definitions

  • the invention relates to a method and a machine for producing a one-sided smooth paper web.
  • the paper web to be produced is transferred by a transfer felt from the press area to the drying area, which was previously passed through a nip associated with the press area. This can lead to unwanted rewetting of the lightweight web.
  • the invention has for its object to provide an improved method and an improved machine of the type mentioned, in which the aforementioned disadvantages are eliminated.
  • a more efficient mechanical dewatering of the web before the beginning of the thermal drying in the drying area as well as a closed and tear-free web guide from the forming area to the drying area and in particular a smoothing cylinder or Yankee cylinder assigned thereto should be ensured.
  • a method for producing a one-sided smooth paper web by means of a forming area, a press area and a drying area comprising machine in which the paper web to be produced by means of a water-absorbing first press felt taken from the forming area and together with the first press felt and an at least substantially not water-absorbing smooth transfer belt is guided by a press nip associated first press nip, the first press felt is led away immediately after the first press nip of the paper web and led away the paper web together with the smooth transfer belt of the first press nip, then by means of a particular conditioned water-absorbing, not guided by the first press nip second press felt taken from the smooth transfer belt and then together with the second press felt through the drying area z subordinated second press nip is performed.
  • the first press felt is led away from the paper web immediately after the first press nip under an angle of> 0 °, preferably> 10 °, formed with the transfer belt and corresponding to the paper web.
  • the first press nip assigned to the press area is formed by a shoe press.
  • the first press felt is passed as top felt and the smooth transfer belt as the bottom band through the first press nip.
  • the drainage performance of a simply felted shoe press is sufficient. Dry contents, in particular> 40%, can be achieved. Since the web is separated from the first press felt immediately after the first press nip and follows the smooth transfer belt, rewetting is minimized.
  • the paper web is in the region of a looped by the second press felt pickup roller through the second press felt of the smooth
  • the second press nip associated with the drying area is formed between a press element and a Yankee cylinder and / or Yankee cylinder.
  • the pressing element may advantageously be formed by a suction roll, by the pickup roll looped by the second press felt, a solid roll or a shoe press unit, in particular a shoe press roll.
  • a well-conditioned second press felt which allows a further increase in dry content to dry contents of, for example, 50% or more. Correspondingly less water must be evaporated. With the same evaporation performance, the production increases, or with the same production, the specific drying costs decrease after, for example, less gas needed for the Glättzylinder associated bonnet heater and / or optionally a smaller Yankee cylinder can be used.
  • the paper web is transferred with its smoother side due to the preceding contact with the smooth transfer belt to the Yankee cylinder.
  • the process can be used with particular advantage for the production of paper webs which are one-sidedly smooth and have a basis weight in the range from 20 to 80 g / m 2 , in particular in a range from 16 to 40 g / m 2 .
  • the above-mentioned object is also achieved by a machine for producing a one-sided smooth paper web, with a Formier Council, a press area and a drying area, wherein the paper web to be produced by means of a water-absorbing first press felt taken from the forming area and together with the first press felt and a at least substantially not water-absorbing smooth transfer belt is guided by a press nip associated first press nip, the first press felt is led away immediately after the first press nip of the paper web and the paper web is led away together with the smooth transfer belt of the first press nip, then by means of a particular conditioned water receiving, not guided by the first press nip second press felt is taken over by the smooth transfer belt and then together with the second press felt through a drying area associated second press nip is guided.
  • the machine according to the invention is in particular for Implementation of the method according to the invention provided. Preferred practical embodiments are given in the subclaims.
  • means for conditioning the second press felt are provided.
  • this second press felt is preferably not structured.
  • Figure 1 is a partial schematic representation of an exemplary
  • Embodiment of a machine according to the invention for producing a one-sided smooth paper web
  • FIG. 2 shows an enlarged view of the press area of the machine according to FIG. 1,
  • FIG. 3 is a partial schematic representation of the drying area of another embodiment of the machine.
  • FIG. 4 shows a schematic partial representation of the drying area of a further embodiment of the machine.
  • FIG. 1 shows, in a schematic partial representation, an exemplary embodiment of a machine 10 for producing a one-sidedly smooth paper web 12 having a forming region 14, a press region 16 and a drying region 18.
  • the paper web 12 to be produced is taken over by a sieve 24 of the forming region 14 by means of a water-absorbing first press felt 20 in the region of a first pickup roller 22 looped by the press felt 20 and together with the first press felt 20 and a smooth transfer belt 26 at least substantially non-absorbent passed through a first press nip 28 associated with the press section 16.
  • the first press felt 20 immediately after the first press nip 28 away from the paper web 12 and the smooth transfer belt 26, where the paper web 12 is led away from the first press nip 28.
  • the paper web 12 is taken over by the smooth transfer belt 26 by means of a preferably conditioned, and in particular non-structured, water-absorbing second press felt 30 not guided by the first press nip 28.
  • the paper web 12 is then guided together with the second press felt 30 through a second press nip 32 assigned to the drying area 18. Also in this second nip 32 so again a pressing force is generated.
  • FIG. 2 shows an enlarged view again of the press area 16 of the machine 10 according to FIG. 1.
  • the first press felt 20 immediately after the first press nip 28 is at an angle ⁇ > 0 °, preferably> 10, formed with the transfer belt 26 and corresponding to the paper web 12 °, led away from the paper web 12.
  • the first press nip 28 assigned to the press area 16 can be formed in particular by a shoe press 28.
  • the shoe press 28 comprises, for example, an overhead shoe press unit, in particular a shoe press roll 36 and a lower counter roll 38.
  • the first press felt 20 can be guided in particular as an upper felt and the smooth transfer belt 26 in particular as a lower belt through the first press nip 28 (see FIGS. 1 and 2).
  • the paper web 12 is taken over by the second press felt 30 from the smooth transfer belt 26 in the region of a second pickup roll 40 looped by the second press felt 30.
  • the second press nip 32 assigned to the drying area 18 is formed between a press element 42 and a Yankee cylinder 44 and / or Yankee cylinder 44.
  • the pressing member 42 is formed by a separate from the pickup roller 40 suction roller.
  • FIG. 3 shows, in a schematic partial representation, the drying area 18 of a further embodiment of the machine 10, in which the pressing element 42 is formed by the pickup roller 40 looped around by the second press felt 30.
  • the pickup suction roll 40 thus simultaneously forms the pressing element 42 forming the second press nip 42 with the Yankee cylinder 44.
  • this embodiment has at least substantially the same structure as that of FIG. 1. Corresponding reference numerals are assigned to corresponding parts.
  • FIG. 4 shows, in a schematic partial representation, the drying region 18 of a further embodiment of the machine, in which the pressing element 42 is formed by a shoe press unit, here for example a shoe press roll.
  • the pressing element 42 may for example also be formed by a solid roller.
  • the paper web 12 is transferred with its smoother on the basis of the previous contact with the smooth transfer belt 26 side of the Yankee cylinder or cylinder 44.
  • the Glättzylinder or Yankee cylinder 44 is assigned a drying hood 46.

Landscapes

  • Paper (AREA)

Abstract

L'invention concerne un procédé de fabrication d'une bande de papier lisse sur un côté, au moyen d'une machine présentant une zone de façonnage (14), une zone de presses (16) et une zone de séchage (18). La bande de papier à fabriquer (12) est prélevée dans la zone de façonnage au moyen d'un premier feutre de presse (20) absorbant l'eau, et guidée avec le premier feutre de presse (20) et une bande de transfert lisse (26), n'absorbant pas l'eau ou très peu, au travers d'une première ligne de contact de presses (28) affectée à la zone de presses (16). Le premier feutre de presse (20) est éloigné de la bande de papier (12) directement après la première ligne de contact de presses (28), tandis que la bande de papier (12) et la bande de transfert lisse (26) sont éloignées de la première ligne de contact de presses (28). La bande de papier (12) est ensuite prélevée sur la bande de transfert lisse (26) au moyen d'un deuxième feutre de presse (30) notamment conditionné, absorbant l'eau, non-guidé au travers de la première ligne de contact de presses (28), puis guidée avec le deuxième feutre de presse (30) au travers d'une deuxième ligne de contact de presses (32) affectée à la zone de séchage. L'invention concerne également une machine correspondante de fabrication d'une bande de papier lisse sur un côté.
EP08760344A 2007-06-11 2008-06-02 Procédé et machine de fabrication d'une bande de papier lisse sur un côté Active EP2160494B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007027270A DE102007027270A1 (de) 2007-06-11 2007-06-11 Verfahren und Maschine zur Herstellung einer einseitig glatten Papierbahn
PCT/EP2008/056757 WO2008151960A1 (fr) 2007-06-11 2008-06-02 Procédé et machine de fabrication d'une bande de papier lisse sur un côté

Publications (2)

Publication Number Publication Date
EP2160494A1 true EP2160494A1 (fr) 2010-03-10
EP2160494B1 EP2160494B1 (fr) 2012-11-21

Family

ID=39737627

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08760344A Active EP2160494B1 (fr) 2007-06-11 2008-06-02 Procédé et machine de fabrication d'une bande de papier lisse sur un côté

Country Status (5)

Country Link
US (1) US20100096097A1 (fr)
EP (1) EP2160494B1 (fr)
CN (1) CN101680179B (fr)
DE (1) DE102007027270A1 (fr)
WO (1) WO2008151960A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008001410A1 (de) 2008-04-28 2009-10-29 Voith Patent Gmbh Maschine zur Herstellung einer einseitig glatten Papierbahn
DE102021109340B4 (de) * 2021-04-14 2024-02-15 Voith Patent Gmbh Maschine und Verfahren zur Herstellung einer Faserstoffbahn

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB727763A (en) * 1953-02-02 1955-04-06 Beloit Iron Works Improvements in or relating to suction press assembly and method of treating a travelling paper web in a paper-making machine
GB1433165A (en) 1973-09-13 1976-04-22 Wiggins Teape Ltd Coated
US5972813A (en) 1997-12-17 1999-10-26 The Procter & Gamble Company Textured impermeable papermaking belt, process of making, and process of making paper therewith
SE512808C2 (sv) 1998-09-09 2000-05-15 Valmet Karlstad Ab Pappersmaskin och sätt för framställning av strukturerat mjukpapper
US6287426B1 (en) * 1998-09-09 2001-09-11 Valmet-Karlstad Ab Paper machine for manufacturing structured soft paper
JP4036765B2 (ja) * 2003-01-29 2008-01-23 イチカワ株式会社 湿紙搬送用ベルト
EP2217759B1 (fr) * 2007-11-19 2011-06-29 Metso Paper, Inc. Dispositif pour transférer une bande de papier d'une bande de soutien a une autre

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008151960A1 *

Also Published As

Publication number Publication date
CN101680179B (zh) 2012-12-26
US20100096097A1 (en) 2010-04-22
DE102007027270A1 (de) 2008-12-18
CN101680179A (zh) 2010-03-24
EP2160494B1 (fr) 2012-11-21
WO2008151960A1 (fr) 2008-12-18

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