EP3359734B1 - Procédé et machine pour la fabrication d'une bande de matière fibreuse - Google Patents

Procédé et machine pour la fabrication d'une bande de matière fibreuse Download PDF

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Publication number
EP3359734B1
EP3359734B1 EP16766540.5A EP16766540A EP3359734B1 EP 3359734 B1 EP3359734 B1 EP 3359734B1 EP 16766540 A EP16766540 A EP 16766540A EP 3359734 B1 EP3359734 B1 EP 3359734B1
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EP
European Patent Office
Prior art keywords
fibrous pulp
felt
pulp web
suction roll
roll
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.)
Active
Application number
EP16766540.5A
Other languages
German (de)
English (en)
Other versions
EP3359734A1 (fr
Inventor
Andreas Anzel
Klaus Gissing
Thomas Scherb
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 EP3359734A1 publication Critical patent/EP3359734A1/fr
Application granted granted Critical
Publication of EP3359734B1 publication Critical patent/EP3359734B1/fr
Active legal-status Critical Current
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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
    • 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
    • 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
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/02—Head boxes of Fourdrinier machines
    • 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
    • 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
    • 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
    • D21F1/78—Pulp catching, de-watering, or recovering; Re-use of pulp-water using cylinders with pressure
    • 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
    • D21F3/0272—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
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/08—Felts
    • D21F7/083—Multi-layer felts
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F9/00—Complete machines for making continuous webs of paper
    • D21F9/003—Complete machines for making continuous webs of paper of the twin-wire type
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/002—Tissue paper; Absorbent 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

Definitions

  • the subject of this invention is a process for producing a fibrous web, in particular for producing a tissue or tissue paper web.
  • a pulp suspension is dehydrated to form a fibrous web in a Crescentformer and dried using a Yankee.
  • Crescentformer the pulp suspension is introduced via a headbox between a forming fabric and a felt and dewatered centrifugally in the region of a forming roll.
  • the subject of this invention is also a device with which the method according to the invention can be carried out.
  • the DE 10 2011 007 568 A1 describes a tissue machine in which the fibrous web is guided in front of the Yankee on a suction roll, which is wrapped by a permeable press belt. By the press belt, the fibrous web is less compressed than in conventional presses, but also occur thereby quality losses.
  • the US 3,224,928 discloses a paper machine with a crescent former having a forming roll, wherein directly after the forming roll a suction roll is arranged, over which the fibrous web is guided together with the felt and the wire.
  • the EP 1 837 439 A2 describes the ATMOS system from Voith. This is a system in which the fibrous web is dewatered using a permeable press belt. The EP 1 837 439 A2 specifically concerns the structure of the press belt.
  • the WO 01/00925 A1 describes a machine and a method for producing tissue in which a impingement dryer is arranged in front of the Yankee.
  • the WO 2009/063396 A1 discloses, inter alia, a tissue machine equipped with only two fabrics, a sieve and a felt.
  • the invention has for its object to provide a method for tissue production, can be produced in the highest possible tissue.
  • the fibrous web is passed together with the forming fabric and the felt immediately after the forming roll on a suction roll and further dehydrated there in the process.
  • the fibrous web is enclosed only by the forming fabric and the felt, thus a gentle drainage can take place.
  • the felt is between the suction roll and the fibrous web and the forming fabric wraps around the fibrous web on the outside.
  • the tensile stress of the forming fabric should be less than 15 kN / m, preferably less than 12 kN / m.
  • the fibrous web should preferably be flowed through by a hot fluid at the suction roll, for example, hot air at a temperature of about 150 ° C, in particular over 200 ° C, preferably above 250 ° C.
  • a hot fluid at the suction roll for example, hot air at a temperature of about 150 ° C, in particular over 200 ° C, preferably above 250 ° C.
  • the humidity of the hot air supplied through the hood should preferably be above 150 gH 2 O / kgAir, especially more than 300 gH 2 O / kg air, preferably even more than 450 gH 2 O / kg air.
  • the supplied hot air should preferably be the exhaust air of the Yankee hood.
  • the felt, the fibrous web and the forming fabric in the initial region of the suction roll are flowed through by steam.
  • the temperature of the fibrous web is further increased, the viscosity of the water decreases and the vacuum dewatering is improved.
  • the suction roll or the suction roll hood can also be divided into several zones, for example into two zones, viewed in the machine direction. This can be done in the first zone, a drainage with other operating parameters, for example, with a higher pressure, a higher temperature or with another medium.
  • the fibrous web is then transported on the felt to the Yankee and transferred there via a press or preferably a shoe press on the Yankee surface.
  • the entire machine then only needs two strings, the forming fabric and the felt.
  • the dry content after the forming unit is not only 10%, but more than 20%, in particular more than 25%, preferably more than 30%. Between forming unit and Yankee there is still enough space available for further units. Thus, there can be carried out a further drying step, for example with an impingement dryer or with a radiation dryer (eg infrared radiator). The dry content is then greater than 25%, in particular greater than 30%, preferably greater than 35%.
  • a further drying step for example with an impingement dryer or with a radiation dryer (eg infrared radiator).
  • the dry content is then greater than 25%, in particular greater than 30%, preferably greater than 35%.
  • the advantage is that the fibrous web reaches the press at the Yankee with a dry content of more than 30%, instead of only 20% to 23% in conventional systems. With this higher dry content, the fibers are more resistant to mechanical pressing. This results in a gain in bulk after the press.
  • 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.
  • 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 towards the suction roll favors the removal of water through the perforated suction roll surface into the interior of the roll.
  • 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 is to drain the water through the To facilitate drilling of the suction roll.
  • These dtex values refer to the basic fiber content of the felt.
  • the subject of this invention is also an apparatus for the production of tissue according to claim 11.
  • the forming fabric is lifted off the fibrous web after the forming roll, dried and then brought into contact again with the fibrous web in front of the suction roll.
  • FIG. 1 the pulp suspension is introduced in a Crescentformer 10 via a headbox 1 in the region of the forming roller 2 between a felt 4 and a forming fabric 3.
  • the felt 4 and the forming fabric 3 wrap around a part of the outer periphery of the forming roll 2, thereby the water of the pulp suspension is thrown by centrifugal forces through the forming fabric 3 to the outside.
  • the felt 4 is arranged on the inside.
  • the fibrous web 9 after the forming roll 2 has a dry content of about 10%.
  • the felt 4, the fibrous web 9 and the forming fabric 3 are guided over a suction roll 11, which is looped in regions.
  • the suction roller 11 sucks through the felt 4, the moisture from the fibrous web 9, it takes place here a vacuum dewatering.
  • a steam blower box 12 is arranged in the initial wrap area of the suction roll 11, via which hot steam flows onto the fibrous web 9 and heats it.
  • the fibrous web 9 after the suction roll 11 has a solids content of about 25% to 30%.
  • the fibrous web 9 Since the fibrous web 9 is still very moist in the area of the suction roll 11, evaporation processes hardly occur here. Here, rather, the viscosity of the water in the fibrous web 9 is reduced by the supply of heat, whereby the water is sucked through the suction roller 11 from the fibrous web 9.
  • the fine-pored felt 4 supports drainage by capillary drainage.
  • the forming fabric 3 is lifted off the fibrous web 9.
  • impact drying in the present example. Drying by means of radiation (for example infrared radiation) would also be conceivable.
  • the impingement dryer 8 is arranged on the side of the fibrous web 9.
  • the fibrous web then has a solids content of about 30% to 35%.
  • the fibrous web 9 is transferred by means of a shoe press roll 5 from the felt 4 onto a Yankee 6.
  • the shoe press roll 5 is wrapped by the felt 4 with a wrap angle ⁇ of ⁇ 175 °.
  • the fibrous web 9 is dried in a known manner with hot air supplied via the Yankee hood 7 and scraped off at the end.
  • the dry content of the fibrous web 9 when transferring to the Yankee 6 is approximately 50%.

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  • Paper (AREA)
  • Sanitary Thin Papers (AREA)

Claims (14)

  1. Procédé de fabrication d'une bande de pâte fibreuse (9), en particulier pour fabriquer une bande de papier hygiénique ou de papier ouaté, une suspension de pâte fibreuse étant égouttée dans un formeur Crescent (10) pour former une bande de pâte fibreuse (9), et la bande de pâte fibreuse (9) étant séchée à l'aide d'un frictionneur (6), la suspension de pâte fibreuse étant introduite par une caisse de tête (1) entre une toile de formation (3) et un feutre (4) dans le formeur Crescent (10) et étant égouttée par force centrifuge dans la zone d'un cylindre de formation (2), la bande de pâte fibreuse (9) étant guidée sur un cylindre de formation (11) conjointement avec la toile de formation (3) et le feutre (4) directement après le cylindre de formation (2), caractérisé en ce que le feutre (4) se trouve entre le cylindre aspirant (11) et la bande de pâte fibreuse (9) et en ce que la toile de formation (3) enveloppe l'extérieur de la bande de pâte fibreuse (9) dans la zone du cylindre aspirant.
  2. Procédé selon la revendication 1, caractérisé en ce que la bande de pâte fibreuse (9) enveloppe le cylindre aspirant (11) à certains endroits et y est traversée par un fluide chaud.
  3. Procédé selon la revendication 2, caractérisé en ce que de l'air chaud à une température supérieure à 150°C, en particulier supérieure à 200°C, de préférence supérieure à 250°C, s'écoule à travers la bande de pâte fibreuse (9) sur le cylindre aspirant (11).
  4. Procédé selon la revendication 3, caractérisé en ce que de l'air chaud humide s'écoule à travers la bande de pâte fibreuse (9) sur le cylindre aspirant (11), la teneur en humidité étant supérieure à 150 gH2O/kg air, en particulier supérieure à 300 gH2O/kg air, de préférence encore supérieure à 450 gH2O/kg air.
  5. Procédé selon la revendication 3 ou 4, caractérisé en ce que l'air chaud appliqué est de l'air sortant d'un capot de frictionneur (7).
  6. Procédé selon l'une quelconque des revendications 2 à 5, caractérisé en ce que de la vapeur s'écoule à travers la bande de pâte fibreuse (9) dans la zone initiale du cylindre aspirant (11).
  7. Procédé selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la bande de pâte fibreuse (9) est transportée sur le feutre (4) jusqu'au frictionneur (6).
  8. Procédé selon la revendication 7, caractérisé en ce que la bande fibreuse (9) est transférée à l'aide d'une presse à sabot (5) sur le frictionneur (6), le cylindre de presse à sabot (5) étant enveloppé de feutre selon un angle supérieur à 60°, de préférence supérieur à 90°, idéalement supérieur à 120°.
  9. Procédé selon l'une quelconque des revendications 1 à 8, caractérisé en ce que la finesse de la surface de feutre faisant face à la bande de pâte fibreuse est inférieure à 6,7 dtex, de préférence inférieure à 3,3 dtex, la couche se trouvant directement en-dessous présentant une finesse inférieure à 17 dtex, de préférence inférieure à 11 dtex et la finesse de la surface de feutre faisant face au cylindre aspirant étant supérieure à 17 dtex.
  10. Procédé selon l'une quelconque des revendications 1 à 9, caractérisé en ce que la bande de pâte fibreuse (9) est pré-séchée par un sécheur par soufflage (8) avant le frictionneur (6) et après le cylindre aspirant (11).
  11. Dispositif de fabrication de papier ouaté comprenant un formeur Crescent (10) et un frictionneur (6), le formeur Crescent (10) comprenant une caisse de tête (1), un cylindre de formation (2), un feutre (4) et une toile de formation (3), le feutre (4) étant disposé entre le cylindre de formation (2) et la bande de pâte fibreuse (9), un cylindre aspirant (11) étant disposé directement après le cylindre de formation (2), le feutre (4), la bande de pâte fibreuse (9) et la toile de formation (3) enveloppant le cylindre aspirant (11), caractérisé en ce que le feutre (4) se trouve entre le cylindre aspirant (11) et la bande de pâte fibreuse (9) et en ce que la toile de formation (3) enveloppe l'extérieur de la bande de pâte fibreuse (9) dans la zone du cylindre aspirant.
  12. Dispositif selon la revendication 11, caractérisé en ce qu'un autre dispositif de séchage thermique (8), en particulier un sécheur par soufflage, est disposé après le cylindre aspirant (11) et avant le frictionneur (6).
  13. Procédé selon l'une quelconque des revendications 11 ou 12, caractérisé en ce qu'aucun autre habillage ne se trouve dans la machine à ouate sauf le feutre (4) et la toile de formation (3).
  14. Procédé selon l'une quelconque des revendications 11 ou 13, caractérisé en ce que la bande de pâte fibreuse (9) est transféré vers le frictionneur (6) à l'aide d'un cylindre de presse à sabot (5), qui est enveloppé par le feutre (4) selon un angle supérieur à 60°, de préférence supérieur à 90°, idéalement supérieur à 120°.
EP16766540.5A 2015-10-06 2016-09-15 Procédé et machine pour la fabrication d'une bande de matière fibreuse Active EP3359734B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50853/2015A AT517330B1 (de) 2015-10-06 2015-10-06 Verfahren zur herstellung einer faserstoffbahn
PCT/EP2016/071818 WO2017060053A1 (fr) 2015-10-06 2016-09-15 Procédé de fabrication d'une bande de matière fibreuse

Publications (2)

Publication Number Publication Date
EP3359734A1 EP3359734A1 (fr) 2018-08-15
EP3359734B1 true EP3359734B1 (fr) 2019-05-08

Family

ID=56940045

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16766540.5A Active EP3359734B1 (fr) 2015-10-06 2016-09-15 Procédé et machine pour la fabrication d'une bande de matière fibreuse

Country Status (6)

Country Link
US (1) US10808360B2 (fr)
EP (1) EP3359734B1 (fr)
CN (1) CN106968120B (fr)
AT (1) AT517330B1 (fr)
ES (1) ES2740877T3 (fr)
WO (1) WO2017060053A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021043483A1 (fr) 2019-09-05 2021-03-11 Voith Patent Gmbh Procédé et appareil de production d'une bande de matériau fibreux

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Publication number Priority date Publication date Assignee Title
DE102018123389A1 (de) * 2018-09-24 2020-02-13 Voith Patent Gmbh Maschine und Verfahren zur Herstellung einer Faserstoffbahn
CN109267414B (zh) * 2018-10-30 2023-09-22 华南理工大学 一种圆网成型装置及方法
US12060681B2 (en) * 2019-05-03 2024-08-13 Voith Patent Gmbh Seamed felt and use of the seamed felt in a tissue machine
SE544018C2 (en) * 2020-01-09 2021-11-02 Valmet Oy A tissue paper making machine
AT522459B1 (de) 2020-01-30 2020-11-15 Andritz Ag Maschf Vorrichtung und verfahren zum herstellen einer faserstoffbahn
WO2022122576A1 (fr) * 2020-12-07 2022-06-16 Voith Patent Gmbh Dispositif et procédé de production d'une bande de matière fibreuse

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US3224928A (en) * 1961-12-21 1965-12-21 Kimberly Clark Co Papermaking machine using a moving felt through a pressure forming slice and the same felt throughout the machine
FI74060C (fi) * 1975-09-17 1987-12-10 Valmet Oy Tissuepappersmaskin.
DE19912226A1 (de) * 1999-03-18 2000-09-28 Sca Hygiene Prod Gmbh Verfahren und Vorrichtung zum Herstellen von Tissue-Papier sowie das damit erhältliche Tissue-Papier
US6231723B1 (en) * 1999-06-02 2001-05-15 Beloit Technologies, Inc Papermaking machine for forming tissue employing an air press
WO2001000925A1 (fr) * 1999-06-29 2001-01-04 Valmet-Karlstad Ab Appareil et procede permettant de fabriquer du papier de soie texture
DE10003684A1 (de) * 2000-01-28 2001-08-02 Voith Paper Patent Gmbh Maschine sowie Verfahren zur Herstellung einer Tissuebahn
EP1294982B1 (fr) * 2000-06-30 2007-10-03 Kimberly-Clark Worldwide, Inc. Procede de fabrication de papier tissu
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US7351307B2 (en) * 2004-01-30 2008-04-01 Voith Paper Patent Gmbh Method of dewatering a fibrous web with a press belt
US7527709B2 (en) 2006-03-14 2009-05-05 Voith Paper Patent Gmbh High tension permeable belt for an ATMOS system and press section of paper machine using the permeable belt
ITFI20070256A1 (it) 2007-11-12 2009-05-13 Costanza Panigada Processo per la produzione di carta tissue in continuo e dispositivo utilizzato in detto processo.
DE102011007568A1 (de) 2011-04-18 2012-10-18 Voith Patent Gmbh Vorrichtung und Verfahren zur Herstellung einer Materialbahn
AT517329B1 (de) * 2015-10-05 2017-01-15 Andritz Ag Maschf Verfahren zur herstellung einer faserstoffbahn

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021043483A1 (fr) 2019-09-05 2021-03-11 Voith Patent Gmbh Procédé et appareil de production d'une bande de matériau fibreux
DE102019123811A1 (de) * 2019-09-05 2021-03-11 Voith Patent Gmbh Verfahren und Vorrichtung zur Herstellung einer Faserstoffbahn

Also Published As

Publication number Publication date
ES2740877T3 (es) 2020-02-06
AT517330A4 (de) 2017-01-15
US20190360155A1 (en) 2019-11-28
US10808360B2 (en) 2020-10-20
AT517330B1 (de) 2017-01-15
WO2017060053A1 (fr) 2017-04-13
CN106968120A (zh) 2017-07-21
CN106968120B (zh) 2020-05-19
EP3359734A1 (fr) 2018-08-15

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