EP2160494B1 - 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 Download PDF

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Publication number
EP2160494B1
EP2160494B1 EP08760344A EP08760344A EP2160494B1 EP 2160494 B1 EP2160494 B1 EP 2160494B1 EP 08760344 A EP08760344 A EP 08760344A EP 08760344 A EP08760344 A EP 08760344A EP 2160494 B1 EP2160494 B1 EP 2160494B1
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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.)
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Application number
EP08760344A
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German (de)
English (en)
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EP2160494A1 (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
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Voith Patent GmbH
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Publication date
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Publication of EP2160494A1 publication Critical patent/EP2160494A1/fr
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Publication of EP2160494B1 publication Critical patent/EP2160494B1/fr
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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.
  • MG machine smoothing
  • the web is transferred with a comparatively low dry content by means of a pressure roller to the Yankee cylinder or Yankee.
  • the production capacity of such a machine is limited by the vaporization capacity of the cylinder and associated hood.
  • a wet pressing before the Yankee Due to the low basis weights, however, a closed web guide is required here. Therefore, the presses are double-felted in this case, the achievable dry content is then limited by the rewet.
  • 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 start of the thermal drying in the drying area and a closed and tear-free web guide from the forming area to the drying area and in particular a Glättzylinder or Yankee cylinder associated therewith 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 non-water-absorbing smooth transfer belt is guided by a press nip associated with the first press nip formed by a shoe press, the first press felt is guided away from the paper web immediately after the first press nip, and the paper web, together with the smooth transfer belt, from the first press nip led away, then taken over by means of a particular conditioned water-absorbing, not guided by the first press nip second press felt of the smooth transfer belt and then together with the second P ressfilz is guided by a drying nip assigned to the second press nip.
  • 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 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 taken over by the second press felt in the area of a pickup roller looped by the second press felt from the smooth transfer belt.
  • the paper web is then guided together with the second press felt through the second press nip assigned to the drying area.
  • 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 through a press nip assigned to the first press nip formed by a schurh press, is guided, the first press felt is led away immediately after the first press nip of the paper web and the paper web together with the smooth transfer belt from the first press nip is led away, is then taken over by means of a particular conditioned water-absorbing, not guided by the first press nip second press felt of the smooth transfer belt and then together with the second Press felt is guided by a drying nip assigned to the second press nip.
  • 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
  • means for conditioning the second press felt are provided.
  • this second press felt is preferably not structured.
  • FIG. 1 shows a schematic partial representation of an exemplary embodiment of a machine 10 for producing a one-sided smooth paper web 12 with a forming region 14, a press area 16 and a drying area 18th
  • the paper web 12 to be produced is taken over by a sieve 24 of the forming region 14 by means of a water-receiving 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 in enlarged scale again the press area 16 of the machine 10 according to FIG. 1 ,
  • the first press felt 20 is guided away from the paper web 12 immediately after the first press nip 28 under an angle ⁇ > 0 °, preferably> 10 °, formed with the transfer belt 26 and corresponding to the paper web 12.
  • the press nip 16 associated with the first press nip 28 is 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 a top felt and the smooth transfer belt 26 in particular as a lower belt through the first press nip 28 (cf. Fig. 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 region 18 is formed between a pressing element 42 and a Yankee cylinder and Yankee cylinder 44.
  • the pressing member 42 is formed by a separate from the pickup roller 40 suction roller.
  • FIG. 3 shows a schematic partial view of the drying region 18 of a further embodiment of the machine 10, in which the pressing member 42 is formed by the looped by the second press felt 30 pickup roller 40.
  • the pickup suction roll 40 thus forms here simultaneously with the smoothing cylinder 44, the second press nip 42 forming the pressing element 42.
  • this embodiment has at least substantially the same structure as that of the FIG. 1 , Corresponding parts are assigned the same reference numerals.
  • FIG. 4 shows a schematic partial view of the drying region 18 of a further embodiment of the machine, in which the pressing member 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.
  • FIG. 1 can be removed, the Glättzylinder or Yankee cylinder 44 is associated with a drying hood 46.

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  • Paper (AREA)

Claims (20)

  1. Procédé de fabrication d'une nappe de papier (12) lisse d'un côté au moyen d'une machine (10) comprenant une section de formage (14), une section de presse (16) et une section de séchage (18), dans lequel la nappe de papier à fabriquer (12) est reprise depuis la section de formage (14) au moyen d'un premier feutre de presse (20) absorbant l'eau et est guidée conjointement avec le premier feutre de presse (20) et une bande de transfert lisse (26) n'absorbant au moins substantiellement pas l'eau à travers un premier pinçage (28) associé à la section de presse (16), qui est formé par une presse à sabot (28), le premier feutre de presse (20) étant guidé immédiatement après le premier pinçage (28) à l'écart de la nappe de papier (12) et la nappe de papier (12) étant guidée conjointement avec la bande de transfert lisse (26) à l'écart du premier pinçage (28), puis étant reprise au moyen d'un deuxième feutre de presse (30) non guidé à travers le premier pinçage (28), notamment conditionné et absorbant l'eau, depuis la bande de transfert lisse (26) et étant ensuite guidée conjointement avec le deuxième feutre de presse (30) à travers un deuxième pinçage (32) associé à la section de séchage (18).
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    le premier feutre de presse (20) est guidé à l'écart de la nappe de papier (12) directement après le premier pinçage (28), suivant un angle (α) formé avec la bande de transfert (26) et, de manière correspondante, la nappe de papier (12), qui est > à 0°, de préférence > 10°.
  3. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    le premier feutre de presse (20) est guidé à travers le premier pinçage (28) sous forme de feutre supérieur et la bande de transfert lisse (26) est guidée à travers le premier pinçage (28) sous forme de bande inférieure.
  4. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la nappe de papier (12) est reprise par le deuxième feutre de presse (30) depuis la bande de transfert lisse (26) dans la région d'un rouleau de reprise (40) entouré par le deuxième feutre de presse (30).
  5. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    le deuxième pinçage (32) associé à la section de séchage (18) est formé entre un élément de presse (42) et un cylindre de lissage et/ou un cylindre Yankee (44).
  6. Procédé selon la revendication 5,
    caractérisé en ce que
    l'élément de presse (42) est formé par un rouleau aspirant.
  7. Procédé selon la revendication 5 ou 6
    caractérisé en ce que
    l'élément de presse (42) est formé par le rouleau de reprise (40) entouré par le deuxième feutre de presse.
  8. Procédé selon la revendication 5,
    caractérisé en ce que
    l'élément de presse (42) est formé par un rouleau massif.
  9. Procédé selon la revendication 5,
    caractérisé en ce que
    l'élément de presse (42) est formé par une unité de presse à sabot, en particulier un rouleau de presse à sabot.
  10. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la nappe de papier (12) est transférée avec son côté plus lisse du fait du contact précédent avec la bande de transfert lisse (26), au cylindre de lissage ou au cylindre Yankee (44).
  11. Machine (10) de fabrication d'une nappe de papier (12) lisse d'un côté, comprenant une section de formage (14), une section de presse (16) et une section de séchage (18), la nappe de papier à fabriquer (12) étant reprise depuis la section de formage (14) au moyen d'un premier feutre de presse (20) absorbant l'eau et étant guidée conjointement avec le premier feutre de presse (20) et une bande de transfert lisse (26) n'absorbant au moins substantiellement pas l'eau à travers un premier pinçage (28) associé à la section de presse (16), qui est formé par une presse à sabot (28), le premier feutre de presse (20) étant guidé immédiatement après le premier pinçage (28) à l'écart de la nappe de papier (12) et la nappe de papier (12) étant guidée conjointement avec la bande de transfert lisse (26) à l'écart du premier pinçage (28), puis étant reprise au moyen d'un deuxième feutre de presse (30) non guidé à travers le premier pinçage (28), notamment conditionné et absorbant l'eau, depuis la bande de transfert lisse (26) et étant ensuite guidée conjointement avec le deuxième feutre de presse (30) à travers un deuxième pinçage (32) associé à la section de séchage (18).
  12. Machine selon la revendication 11,
    caractérisée en ce que
    le premier feutre de presse (20) est guidé à l'écart de la nappe de papier (12) directement après le premier pinçage (28), suivant un angle (α) formé avec la bande de transfert (26) et, de manière correspondante, la nappe de papier (12), qui est > à 0°, de préférence > 10°.
  13. Machine selon l'une quelconque des revendications précédentes 11 à 12,
    caractérisée en ce que
    le premier feutre de presse (20) est guidé à travers le premier pinçage (28) sous forme de feutre supérieur et la bande de transfert lisse (26) est guidée à travers le premier pinçage (28) sous forme de bande inférieure.
  14. Machine selon l'une quelconque des revendications précédentes 11 à 13,
    caractérisée en ce que
    la nappe de papier (12) est reprise par le deuxième feutre de presse (30) depuis la bande de transfert lisse (26) dans la région d'un rouleau de reprise (40) entouré par le deuxième feutre de presse (30).
  15. Machine selon l'une quelconque des revendications 11 à 14,
    caractérisée en ce que
    le deuxième pinçage (32) associé à la section de séchage (18) est formé entre un élément de presse (42) et un cylindre de lissage et/ou un cylindre Yankee (44).
  16. Machine selon la revendication 15,
    caractérisée en ce que
    l'élément de presse (42) est formé par un rouleau aspirant.
  17. Machine selon la revendication 15 ou 16,
    caractérisée en ce que
    l'élément de presse (42) est formé par le rouleau de reprise (40) entouré par le deuxième feutre de presse.
  18. Machine selon la revendication 15,
    caractérisée en ce que
    l'élément de presse (42) est formé par un rouleau massif.
  19. Machine selon la revendication 15,
    caractérisée en ce que
    l'élément de presse (42) est formé par une unité de presse à sabot, en particulier un rouleau de presse à sabot.
  20. Machine selon l'une quelconque des revendications 15 à 19
    caractérisée en ce que
    la nappe de papier (12) est transférée avec son côté plus lisse du fait du contact précédent avec la bande de transfert lisse (26), au cylindre de lissage ou au cylindre Yankee (44).
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 EP2160494A1 (fr) 2010-03-10
EP2160494B1 true 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

Also Published As

Publication number Publication date
CN101680179A (zh) 2010-03-24
CN101680179B (zh) 2012-12-26
WO2008151960A1 (fr) 2008-12-18
DE102007027270A1 (de) 2008-12-18
US20100096097A1 (en) 2010-04-22
EP2160494A1 (fr) 2010-03-10

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