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 côtéInfo
- 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
Links
- 238000000034 method Methods 0.000 title claims description 22
- 238000001035 drying Methods 0.000 claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 230000001143 conditioned effect Effects 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims description 17
- 239000007787 solid Substances 0.000 claims description 4
- 239000002250 absorbent Substances 0.000 abstract description 4
- 238000009499 grossing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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
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)
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)
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 |
-
2007
- 2007-06-11 DE DE102007027270A patent/DE102007027270A1/de not_active Withdrawn
-
2008
- 2008-06-02 CN CN200880019898XA patent/CN101680179B/zh active Active
- 2008-06-02 EP EP08760344A patent/EP2160494B1/fr active Active
- 2008-06-02 WO PCT/EP2008/056757 patent/WO2008151960A1/fr active Application Filing
-
2009
- 2009-12-10 US US12/634,758 patent/US20100096097A1/en not_active Abandoned
Non-Patent Citations (1)
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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