EP1262596A2 - Section de formage et procédé de formation d'une feuille - Google Patents

Section de formage et procédé de formation d'une feuille Download PDF

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Publication number
EP1262596A2
EP1262596A2 EP02009843A EP02009843A EP1262596A2 EP 1262596 A2 EP1262596 A2 EP 1262596A2 EP 02009843 A EP02009843 A EP 02009843A EP 02009843 A EP02009843 A EP 02009843A EP 1262596 A2 EP1262596 A2 EP 1262596A2
Authority
EP
European Patent Office
Prior art keywords
fraction
fines
low
fiber
fine
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.)
Ceased
Application number
EP02009843A
Other languages
German (de)
English (en)
Other versions
EP1262596A3 (fr
Inventor
Günter HALMSCHLAGER
Erich Brunnauer
Wilhelm Gansberger
Heinrich Lang
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 Paper 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 Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1262596A2 publication Critical patent/EP1262596A2/fr
Publication of EP1262596A3 publication Critical patent/EP1262596A3/fr
Ceased legal-status Critical Current

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    • 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
    • D21F9/006—Complete machines for making continuous webs of paper of the twin-wire type paper or board consisting of two or more layers
    • 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
    • D21F11/02—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type
    • D21F11/04—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type paper or board consisting on two or more layers

Definitions

  • the invention relates to a sheet forming device, in particular a machine for Production of a multilayer fibrous web, in particular paper or cardboard web or packaging paper web, in which the particular by a respective Shaped layers are spotted together. It also affects a sheet formation method and one by such a device and / or Fibrous web produced by such a method, in particular paper or Cardboard web or packaging paper web.
  • FIG. 2 shows that theoretically possible improvement in basis weight (law of error propagation) in Depends on the number of layers. The improvement is about 30%, if two layers are used instead of one layer. Furthermore, FIG. 2 can be seen that the improvement with the number of layers again drops. To gain another 25%, three more layers are required.
  • FIG. 3 shows the operating window of a younger circular screen former.
  • Multi-layer four-wire machines combine the advantages of individual four-wire machines with those of multi-layer cylinder cylinders. As can be seen from FIG. 4 results, the operating window of multi-layer Fourdrinier machines is wider than that of round screen cylinders.
  • FIG. 5 the operating window of multi-layer Fourdrinier machines (area "A") compared with a single-layer gap former and a two-layer gap former.
  • a sheet or web of 150 g / m 2 can be produced at a speed of, for example, 950 m / min with only one gap former, which leads to a production of up to approximately 205 t / (dm), which is considerable for a former ,
  • the curve "C" shows the operating area for a two-layer gap formation concept. Such a Concept enables the generation of a high sheet square meter weight even at high speeds.
  • the strength is one of the decisive factors for the production of corrugated cardboard and raw papers. With the creation of two layers instead of just one there is a significant improvement in strength.
  • a multi-layer gap former concept (see FIG. 7) ensures the best formation and Strength at highest production values, whereby also the compensation or Averaging effect is used.
  • the aim of the invention is to implement the concepts mentioned for complete paper machines, especially packaging machines, to further develop and optimize and in particular to create a paper machine that at least some of the areas mentioned above bring further advantages.
  • this object is achieved by a sheet-forming device and in particular a machine for producing a multilayer fibrous web, in particular paper or cardboard web or packaging paper web, in which messes up the layers formed by a respective former be, with at least one of the formers to form a multilayer Layer comprises a multi-layer headbox with at least two different Substances or substance streams of different compositions for different layers.
  • the long fiber fraction and / or the fraction low in fine material can in particular a first former and the long fiber / short fiber fraction and / or the low-fine / high-fine fraction as well as the short fiber fraction and / or the high-fraction fraction fed to a multi-layer headbox of a second former become.
  • the long fiber fraction supplied to a first former is preferred and / or fraction low in fine substances formed a ceiling layer.
  • the long fiber / short fiber fraction and / or the low-fine / high-fine fraction as well the short fiber fraction and / or the fraction rich in fines an outer sieve and a former comprising an inner wire in which the long fiber / short fiber fraction is fed and / or the fraction low in fines / rich in fines the outer sieve and the short fiber fraction and / or the fraction rich in fines is dewatered through the inner sieve.
  • the long fiber fraction and / or the low-particulate matter Fraction a top layer, especially on the base sieve, through the long fiber / short fiber fraction and / or the fraction low in fines / rich in fines Back layer and by the short fiber fraction and / or the fraction rich in fines one between the top layer and the back layer Intermediate layer formed.
  • At least one of the formers is formed by a gap former which is a machine in particular comprises a forming element formed by a forming roller.
  • the long fiber / short fiber fraction and / or the low-fine / fine-fiber-rich fraction as well as the short fiber fraction and / or the low-fine fraction expediently fed to a gap former in which the sheet formation with the Short fiber fraction and / or the fraction rich in fines on the forming element side he follows.
  • the machine can be provided in particular for the packaging area.
  • the machine in particular a press section, a dryer section, at least comprise a coating or application device and / or a reel.
  • At least one of the headboxes can be designed, for example, as described in DE 40 19 593 A1.
  • the press section can, for example be carried out as specified in DE 40 26 021 A1.
  • a possible, exemplary embodiment of the dryer section is, for example, in DE 42 18 595 A1.
  • the coating or application device in question can be designed, for example, as in DE 34 17 487 A1 is specified.
  • such a reeling is possible such as is described in WO 98/52858.
  • the multilayer / multilayer combination according to the invention brings in all these areas corresponding advantages.
  • At least one of the Shaper to form a multi-layer ply, especially a multi-layer headbox comprises with at least two different substances or Partial streams of different compositions for different layers is loaded.
  • FIG. 7 shows a purely exemplary embodiment of a machine 10 for production a multilayer fibrous web 12, in which the by a respective Shaped layers are spotted together.
  • the multilayer Fibrous web 12 can in particular be a paper or cardboard web act.
  • two layers are formed by a respective former A, B generated.
  • At least one of these two layers A, B is generated by a gap former, which is a forming element formed in particular by a forming roller 14 includes.
  • the gap formers each comprise two continuous endless drainage belts, which converge to form a material inlet gap and in the area of this inlet gap via the respective forming element 14, here one forming roller each.
  • the outer drainage belt is fed to the forming element 14 via a breast roll 28.
  • the stock inlet gap is fed through a headbox 30 with fiber suspension.
  • first layer A is a first gap former 16 and a second to form the second layer B.
  • Gapformer 18 provided.
  • the first layer A is separated from the top wire 20 Bottom or base sieve 22 of the first gap former 16 of a rubber zone 24 supplied, in which the two layers A, B are mixed together.
  • the direction of rotation of the forming element 14 is the second Gapformer 18 is equal to the direction of rotation of the forming element 14 of the first Gapformers 16.
  • the arrangement can also be made so that there are opposite directions of rotation.
  • the first gap former 16 can be, for example, a "DuoFormer Base "former and in the second gap former, for example, a" DuoFormer Trade top formers.
  • the headbox 30 is the second Gapformers 18 is provided as a multi-layer headbox, with at least two different substances or partial substance flows of different compositions for different layers.
  • the long fiber fraction and / or the fraction low in fine substances can be used the first former 16 and the long fiber / short fiber fraction and / or the low-fine / high-fine fraction as well as the short fiber fraction and / or the high-fraction fraction of the multilayer headbox 30 of the second former 18 be fed.
  • Fraction Due to the long fiber fraction fed to the first former 16 and / or low-fine material Fraction can in particular be a top layer, on the baseband 22, be formed.
  • the sheet formation can take place in particular with the short fiber fraction and / or the low-fine fraction on the forming element side respectively. Accordingly, the long fiber / short fiber fraction is in the gap former 18 and / or the fraction low in fines / high in fines through the outer sieve 20 and the short fiber fraction and / or the fraction rich in fines through the inner sieve 32 drained.
  • the machine 10 can be provided in particular for the packaging area his.
  • Figure 8 shows the relative position of the fractions during the dewatering process. So the long fiber / short fiber fraction and / or the low-fine / fine-fiber-rich Fraction through the outer sieve 20 of the second gap former 18 drained. The short fiber fraction containing the largest proportion of fines and / or fraction rich in fines is through the inner sieve 32 of this gap former 18 drained. By a gentle drainage using the concerned Forming element 14 can be the fines of the short fiber fraction and / or the high-fines fraction are kept in the web, which is different Reasons is desirable, especially for a good ply bond. The Long fiber / short fiber fraction and / or the low-fine / high-fine fraction on the side of the outer screen 20 brings about a reduction in the washout effects.
  • FIG. 10 shows a schematic view of a press nip 34. It is known that a long fiber web and / or a fraction low in fine material is open to a large extent and easier to drain than a short fiber web and / or a fine-fiber one Fraction.
  • the water can be drawn off more easily become. This can counteract web crushing in the press section become, which is particularly important for high production. A better Drainage increases wet compaction accordingly, which increases strength is an advantage.
  • the multilayer / multilayer technology according to the invention also results in the dryer section Advantages (see Fig. 11).
  • the long fiber fraction and / or the low-particulate matter lies Fraction opposite the drying cylinders.
  • the higher surface porosity of a layered web enables one faster steam escape, which is another advantage. There the path to both surfaces is open to a greater extent, so will the Reduces the risk of blistering and delamination or peeling.
  • High strength values require full starch penetration. At high speeds the nip stays shorter and it becomes more difficult to find one to obtain full starch penetration of the web in the press section.
  • the layered Track structure makes drainage easier. Conversely enables the open surface of the layered web provides better starch penetration (see Fig. 12).
  • fine substances have a higher affinity for starch.
  • the high fines content towards the center of the web supports the penetration process by sucking starch inside. This effect is special an advantage for high masses and high production.
  • the long-fiber fraction and / or the low-fine fraction on the surface maintains a certain roughness that is required to achieve the desired glide angle to obtain.
  • the hotmelt properties are also improved.
  • the Glue can penetrate the surface better, creating a mechanical anchor arises with the train.
  • the main reasons for movement for the multi-layer / multi-layer technology according to the invention were the speed and the production, but also the quality. This also applies to the latest carton and packaging gap former concepts.

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EP02009843A 2001-05-07 2002-05-02 Section de formage et procédé de formation d'une feuille Ceased EP1262596A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10122047A DE10122047A1 (de) 2001-05-07 2001-05-07 Blattbildungsvorrichtung und -verfahren
DE10122047 2001-05-07

Publications (2)

Publication Number Publication Date
EP1262596A2 true EP1262596A2 (fr) 2002-12-04
EP1262596A3 EP1262596A3 (fr) 2005-02-09

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EP02009843A Ceased EP1262596A3 (fr) 2001-05-07 2002-05-02 Section de formage et procédé de formation d'une feuille

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US (2) US20020162636A1 (fr)
EP (1) EP1262596A3 (fr)
DE (1) DE10122047A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008041953A1 (de) 2008-09-10 2010-03-11 Voith Patent Gmbh Blattbildungsvorrichtung und Verfahren zur Herstellung symmetrischer Blattstrukturen
WO2010089182A1 (fr) 2009-02-06 2010-08-12 Voith Patent Gmbh Procédé de fabrication d'une bande de matière fibreuse à plusieurs épaisseurs et dispositif de formation de feuille permettant de mettre en oeuvre le procédé
DE102011005747A1 (de) 2011-03-18 2012-09-20 Voith Patent Gmbh Blattbindungsvorrichtung
DE102011005540A1 (de) 2011-03-15 2012-09-20 Voith Patent Gmbh Herstellverfahren für eine Faserstoffbahn
DE102011081239A1 (de) 2011-08-19 2013-02-21 Voith Patent Gmbh Blattbildungsvorrichtung
WO2013139522A1 (fr) 2012-03-22 2013-09-26 Voith Patent Gmbh Dispositif de réception de l'eau résiduelle

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DE202004021817U1 (de) 2004-10-21 2011-06-09 Voith Patent GmbH, 89522 Blattbildungssystem
ITMI20060698A1 (it) * 2006-04-07 2007-10-08 Gruppo Cordenons Spa Materiale cartaceo di sicurezza in particolare per etichettatura e confezionamento e relativo procedimento di fabbricazione
US7588663B2 (en) * 2006-10-20 2009-09-15 Kimberly-Clark Worldwide, Inc. Multiple mode headbox
CN102182098B (zh) * 2011-05-07 2013-09-11 山东世纪阳光纸业集团有限公司 一种轻涂白面牛卡纸生产设备及生产方法
CN102182106A (zh) * 2011-05-07 2011-09-14 昌乐新迈纸业有限公司 一种涂布白面牛卡纸生产设备及生产方法
US8871059B2 (en) * 2012-02-16 2014-10-28 International Paper Company Methods and apparatus for forming fluff pulp sheets
FR3035611B1 (fr) * 2015-04-28 2019-08-09 Centre Technique Du Papier Procede et dispositif de fabrication d'un materiau stratifie comprenant une couche de cellulose fibrillee
SE543829C2 (en) * 2019-12-19 2021-08-03 Stora Enso Oyj A light weight linerboard for corrugated board

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008041953A1 (de) 2008-09-10 2010-03-11 Voith Patent Gmbh Blattbildungsvorrichtung und Verfahren zur Herstellung symmetrischer Blattstrukturen
WO2010089182A1 (fr) 2009-02-06 2010-08-12 Voith Patent Gmbh Procédé de fabrication d'une bande de matière fibreuse à plusieurs épaisseurs et dispositif de formation de feuille permettant de mettre en oeuvre le procédé
DE102009000696A1 (de) 2009-02-06 2010-08-12 Voith Patent Gmbh Verfahren zur Herstellung einer mehrlagigen Faserstoffbahn und Blattbildungsvorrichtung zur Durchführung des Verfahrens
DE102011005540A1 (de) 2011-03-15 2012-09-20 Voith Patent Gmbh Herstellverfahren für eine Faserstoffbahn
DE102011005747A1 (de) 2011-03-18 2012-09-20 Voith Patent Gmbh Blattbindungsvorrichtung
WO2012126875A1 (fr) 2011-03-18 2012-09-27 Voith Patent Gmbh Dispositif de mise en feuille
DE102011081239A1 (de) 2011-08-19 2013-02-21 Voith Patent Gmbh Blattbildungsvorrichtung
WO2013139522A1 (fr) 2012-03-22 2013-09-26 Voith Patent Gmbh Dispositif de réception de l'eau résiduelle
DE102012204593A1 (de) 2012-03-22 2013-09-26 Voith Patent Gmbh Siebwasserauffanganlage
DE202012013055U1 (de) 2012-03-22 2014-09-05 Voith Patent Gmbh Siebwasserauffanganlage

Also Published As

Publication number Publication date
US20020162636A1 (en) 2002-11-07
DE10122047A1 (de) 2002-11-14
EP1262596A3 (fr) 2005-02-09
US20050039874A1 (en) 2005-02-24

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