EP3359733A1 - Procédé de fabrication d'une bande de matière fibreuse - Google Patents

Procédé de fabrication d'une bande de matière fibreuse

Info

Publication number
EP3359733A1
EP3359733A1 EP16766279.0A EP16766279A EP3359733A1 EP 3359733 A1 EP3359733 A1 EP 3359733A1 EP 16766279 A EP16766279 A EP 16766279A EP 3359733 A1 EP3359733 A1 EP 3359733A1
Authority
EP
European Patent Office
Prior art keywords
fibrous web
dewatering device
hot air
sieve
tad
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
EP16766279.0A
Other languages
German (de)
English (en)
Other versions
EP3359733B1 (fr
Inventor
Andreas Anzel
Thomas Scherb
Wilhelm Mausser
Klaus Gissing
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.)
Andritz AG
Original Assignee
Andritz AG
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 Andritz AG filed Critical Andritz AG
Publication of EP3359733A1 publication Critical patent/EP3359733A1/fr
Application granted granted Critical
Publication of EP3359733B1 publication Critical patent/EP3359733B1/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
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/0027—Screen-cloths
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
    • D21F1/74—Pulp catching, de-watering, or recovering; Re-use of pulp-water using cylinders
    • D21F1/76—Pulp catching, de-watering, or recovering; Re-use of pulp-water using cylinders with suction
    • 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
    • D21F3/0209—Wet presses with extended press nip
    • D21F3/0254—Cluster presses, i.e. presses comprising a press chamber defined by at least three rollers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/0027—Screen-cloths
    • D21F1/0036—Multi-layer screen-cloths
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/0027—Screen-cloths
    • D21F1/0063—Perforated sheets
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/0027—Screen-cloths
    • D21F1/0072—Link belts
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/48—Suction apparatus
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/006—Making patterned paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/14—Making cellulose wadding, filter or blotting paper
    • D21F11/145—Making cellulose wadding, filter or blotting paper including a through-drying process
    • 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
    • D21F3/0209—Wet presses with extended press nip
    • 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
    • D21F3/0209—Wet presses with extended press nip
    • D21F3/0218—Shoe presses
    • D21F3/0227—Belts or sleeves therefor
    • 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
    • D21F3/0272—Wet presses in combination with suction or blowing devices
    • 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
    • D21F3/10—Suction rolls, e.g. couch rolls
    • 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
    • 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
    • D21F5/18—Drying webs by hot air

Definitions

  • the subject of this invention is a process for producing a fibrous web, in particular for
  • Fibrous web dewatered in a twin-wire former and dried using a TAD dryer In front of the TAD dryer a Vorent camess mecanics adopted is provided with a hood and a suction roll, while the embedded between each exactly one fabric fiber web is traversed by a hot fluid, the fabric between the suction roll and fibrous web is a felt and wherein the fabric between fibrous web and Hood is a sieve.
  • the fibrous web is first pre-dewatered by means of vacuum to a solids content of about 25% and then in the TAD dryer with the help of large quantities
  • Hot air dried This air is heated by burners and with the help of blowers via the TAD hood through the fibrous web in the TAD drum passed, thereby evaporating the water in the fibrous web.
  • the differential pressure between the hood and drum is low.
  • Dry content of the fibrous web is high enough so that the air can flow through the fibrous web. Only then does one reach the area of throughflow drying. This undesirable impact drying in the TAD dryer has a detrimental effect on the moisture profile of the fibrous web. In addition, the drying efficiency or energy consumption decreases. To achieve a sufficient
  • Dry content is often also two TAD dryers
  • EP 1 397 587 B1 discloses a tissue machine which dispenses with the use of TAD driers. Here is the
  • the pre-dewatering device can also be operated without a special embossing belt, and furthermore permits the production of a fibrous web provided with a three-dimensional surface structure.
  • the invention has for its object to increase the dry content of the fibrous web, so that the efficiency of the TAD drum is increased or the energy consumption is reduced.
  • the moisture profile of the fibrous web transverse to the machine direction compared to conventional TAD systems should be uniform and preferably the use of only one TAD drum should be possible.
  • the pre-dewatering should be so gentle that the quality of the fibrous web is not reduced, a pre-dewatering with presses or press belts can compress the fibrous web too much and thus adversely affect the quality. This object is achieved by a manufacturing method according to claim 1.
  • the process uses a TAD drum and, in addition, a very high specificity is achieved in the predrying device
  • volume flow of the fluid greater than 100 m 3 / (m 2 ' min), in particular greater than 200 m 3 / (m 2 min), preferably greater than 250 m 3 / (m 2 ' min) sucked through the fibrous web.
  • the differential pressure in the pre-dewatering device between hood side and suction roller side should be set to greater than 0.25 bar, in particular greater than 0.45 bar, preferably greater than 0.55 bar. This will be the
  • Pre-dewatering device operated at a pressure difference that is orders of magnitude greater than the
  • the dry content prior to the TAD drum can be increased from previously about 25% in conventional machines to over 30%, in particular to over 35%, preferably even over 40%. This increases the dry content prior to the TAD drum
  • Permeability of the fibrous web and in the TAD drum can be a through-air drying over the entire
  • the hot fluid may be, for example, hot air or hot steam.
  • Favorable temperature ranges of the hot air are at temperatures of above 150 ° C, in particular above 200 ° C, preferably above 250 ° C.
  • the pre-dewatering device can also be installed in
  • Machine direction viewed in several zones, for example, be divided into two zones. This allows drying in the first zone with others
  • the felt has a fine-pored structure, wherein the average pore size of the fibrous web-facing surface of the felt is smaller than the average pore size of the side facing the suction roll side.
  • a fine and soft felt top to the fibrous web increases the contact area between felt and fibrous web, which promotes Kapillarent camesstation.
  • a coarser felt structure to the suction roll on the other hand favors the removal of water through the perforated suction roller surface into the interior of the roller.
  • the fineness of the finer felt surface should be less than 6.7 dtex, preferably less than 3.3 dtex, the layer directly below it should have a fineness of less than 17 dtex, preferably less than 11 dtex, whereas the opposite felt side facing the suction roll would then be much more open (coarser) should be to the discharge of the
  • the suction roll should have as large a free surface as possible, for example greater than 25%, but better still greater than 35%.
  • Fig. 1 is a schematic (side view) tissue machine, which is suitable for carrying out the method according to the invention
  • FIG. 2 shows a further schematic (side view) of a suitable tissue machine
  • Twin-wire former 18 is introduced via a headbox 1 between two wires 3, passed over a forming roll 2 and dewatered by means of vacuum boxes (not shown) to a dry content of about 24%.
  • the transfer box 11 then transfers the fibrous web 9 onto a structured TAD sieve 4.
  • the structured TAD sieve 4 can (need not) be moved somewhat slower than the sieve 3, so that the fibers fit well into the depressions of the TAD Sieve 4 can insert (wet crepe), through the suction box 10 for
  • Pre-dewatering device 20 The
  • Pre-dewatering device 20 has a hood 17, a felt 5 and a suction roll 16.
  • the fibrous web 9 fixed on the TAD wire 4 can be pressed by the press roll (kiss press roll) 15 against the felt 5 and against the suction roll 16. This improves the contact between felt 5 and fibrous web 9.
  • the line force in this press nip is between 5 kN / m and 30 kN / m. At these pressures, only about 20% of the fibers are compacted
  • the remaining 80% of the fibers are protected by the depressions of the TAD sieve 4 and are therefore not compressed.
  • the fibrous web 9 is guided between the felt 5 and the TAD sieve 4 through the pre-dewatering device 20.
  • About the hood 17 in a first zone steam is blown onto the fibrous web 9 and that more than 0.3 tons of steam per ton of pulp, better still more than 0.5 tons of steam per ton of pulp, ideally even more than 1 ton of steam per ton pulp.
  • Fibrous web 9 is still very humid, it hardly comes here to evaporation processes. Here, rather, by the heat supply, the viscosity of the water in the
  • the amount of air supplied via the hood 17 substantially corresponds to the amount sucked off via the suction roller 16.
  • the hot air dryer 19 is a TAD dryer and consists of a TAD drum 13 and a TAD hood 14. At a dry content of 35%, a second TAD drum can be omitted.
  • the fibrous web is transferred with a press roller 12 from the TAD sieve 4 to a Yankee cylinder 6.
  • the fibrous web 9 is further dried with hot air supplied via the hood 7 and then scraped off.
  • the Yankee surface is over a
  • Coating device 8 sprayed with chemicals, so that the fibrous web can be easily scrape off from the Yankee surface.
  • FIG. 2 shows a further device for carrying out the method according to the invention.
  • the sieve 3 of the twin-wire former 18 can be a

Landscapes

  • Paper (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

L'invention concerne un procédé pour produire une bande de matière fibreuse (9), notamment une bande de papier ouaté ou de papier hygiénique, comprenant les étapes qui consistent à retirer l'eau d'une suspension de matière fibreuse pour former une bande de matière fibreuse (9) dans un formeur à double toile (18) et à sécher la bande de matière fibreuse (9) à l'aide d'un sécheur d'air traversant (19). En aval du formeur à double toile (18) et en amont du sécheur d'air traversant (19) se trouve un dispositif de pré-hydroextraction (20) comportant un capot (17) et un cylindre aspirant (16), la bande de matière fibreuse (9) qui se trouve précisément entre des toiles (3, 4, 5) respectives étant parcourue par un fluide de température très élevée. La toile (5) située entre le cylindre aspirant (16) et la bande de matière fibreuse (9) est un feutre (5) et la toile (3, 4) située entre la bande de matière fibreuse (9) et le capot (17) est un filtre (3, 4). Dans le dispositif de pré-hydroextraction (20), un débit volumique spécifique de fluide supérieur à 100 m3/ (m2.min), notamment supérieur à 200 m3/ (m2.min), de préférence supérieur à 250m3/ (m2.min) passe par aspiration à travers la bande de matière fibreuse (9).
EP16766279.0A 2015-10-05 2016-09-14 Procédé de fabrication d'une bande de matière fibreuse Active EP3359733B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50843/2015A AT517329B1 (de) 2015-10-05 2015-10-05 Verfahren zur herstellung einer faserstoffbahn
PCT/EP2016/071621 WO2017060049A1 (fr) 2015-10-05 2016-09-14 Procédé de fabrication d'une bande de matière fibreuse

Publications (2)

Publication Number Publication Date
EP3359733A1 true EP3359733A1 (fr) 2018-08-15
EP3359733B1 EP3359733B1 (fr) 2019-05-08

Family

ID=56936403

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16766279.0A Active EP3359733B1 (fr) 2015-10-05 2016-09-14 Procédé de fabrication d'une bande de matière fibreuse

Country Status (6)

Country Link
US (1) US9856603B2 (fr)
EP (1) EP3359733B1 (fr)
CN (1) CN106968121B (fr)
AT (1) AT517329B1 (fr)
ES (1) ES2737828T3 (fr)
WO (1) WO2017060049A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT517330B1 (de) * 2015-10-06 2017-01-15 Andritz Ag Maschf Verfahren zur herstellung einer faserstoffbahn
US10694666B2 (en) 2018-04-16 2020-06-30 Baum Machine, Inc. Harvesting machine having a moisture removal mechanism and a crop converging mechanism
US10745858B1 (en) 2018-06-27 2020-08-18 Kimberly-Clark Worldwide, Inc. Through-air drying apparatus and methods of manufacture
AT522784B1 (de) * 2020-02-25 2021-02-15 Andritz Ag Maschf Vorrichtung und verfahren zum herstellen einer faserstoffbahn
SE2230068A1 (en) * 2022-03-10 2022-11-15 Valmet Oy A machine for producing a fibrous web

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE177490T1 (de) * 1993-12-20 1999-03-15 Procter & Gamble Nass gepresstes papier und verfahren zu dessen herstellung
CA2234305A1 (fr) * 1997-04-03 1998-10-03 Fort James Corporation Secheur a air traversant haute intensite pour conversion de machines a papier classiques a presse humide
US6398916B1 (en) * 1999-12-16 2002-06-04 Valmet Karlstad Ab Simplified through-air drying paper making machine having a twin wire forming section
DE10129613A1 (de) * 2001-06-20 2003-01-02 Voith Paper Patent Gmbh Verfahren und Vorrichtung zur Herstellung einer mit einer dreidimensionalen Oberflächenstruktur versehenen Faserstoffbahn
AT413039B (de) * 2004-01-13 2005-10-15 Andritz Ag Maschf Vorrichtung zum wechseln einer bespannung einer papiermaschine
CA2771007C (fr) * 2004-01-30 2014-06-10 Voith Paper Patent Gmbh Systeme de deshydratation avance
JP2007519834A (ja) * 2004-01-30 2007-07-19 ボイス ペ−パ− パテント ゲ−エムベ−ハ− 最新式脱水システム
AT508331B1 (de) * 2009-05-19 2011-05-15 Andritz Ag Maschf Verfahren und vorrichtung zur behandlung einer faserstoffbahn in einer langnip-presseinheit

Also Published As

Publication number Publication date
US9856603B2 (en) 2018-01-02
EP3359733B1 (fr) 2019-05-08
WO2017060049A1 (fr) 2017-04-13
CN106968121B (zh) 2019-10-25
US20170096775A1 (en) 2017-04-06
CN106968121A (zh) 2017-07-21
ES2737828T3 (es) 2020-01-16
AT517329A4 (de) 2017-01-15
AT517329B1 (de) 2017-01-15

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