EP2907916A1 - Procédé et dispositif de fabrication d'une bande de matière fibreuse à une ou plusieurs couches et bande de matière fibreuse à une ou plusieurs couches fabriquée de cette manière - Google Patents

Procédé et dispositif de fabrication d'une bande de matière fibreuse à une ou plusieurs couches et bande de matière fibreuse à une ou plusieurs couches fabriquée de cette manière Download PDF

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Publication number
EP2907916A1
EP2907916A1 EP14154809.9A EP14154809A EP2907916A1 EP 2907916 A1 EP2907916 A1 EP 2907916A1 EP 14154809 A EP14154809 A EP 14154809A EP 2907916 A1 EP2907916 A1 EP 2907916A1
Authority
EP
European Patent Office
Prior art keywords
pulp
layer
fibrous
fibrous web
fiber groups
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
EP14154809.9A
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German (de)
English (en)
Inventor
Günter Dipl. Ing. Dr. Halmschlager
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.)
Mayr Melnhof Karton AG
Original Assignee
Mayr Melnhof Karton 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 Mayr Melnhof Karton AG filed Critical Mayr Melnhof Karton AG
Priority to EP14154809.9A priority Critical patent/EP2907916A1/fr
Priority to PCT/EP2015/052435 priority patent/WO2015121152A1/fr
Publication of EP2907916A1 publication Critical patent/EP2907916A1/fr
Ceased 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
    • 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
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/02—Head boxes of Fourdrinier machines

Definitions

  • the invention relates to a method for producing a single-layer or multi-layer fibrous web, in particular a paper or board web, comprising at least one fibrous layer.
  • the invention further relates to a device for producing a single-layer or multi-layer fibrous web, in particular a paper or board web, comprising at least one fibrous layer.
  • Methods and devices for producing a multilayer fibrous web, in particular of paper or board webs are known from the prior art in various embodiments.
  • several layers of partially different fibrous materials are formed separately, in particular in paperboard production, and then pressed or vergautscht gradually.
  • a disadvantage of the known methods and devices is that in conventional layer or sheet formation, the fiber orientation is primarily oriented in the x / y direction (two-dimensional) and only very slightly in the z-direction, ie in height. As a result, however, no or only low strength of the multilayer fibrous webs formed in the z-direction can be achieved.
  • the EP 1 422 340 A1 a method in which a fines migration is enforced in the pulp layers in a Gautschnip.
  • the fibers and fines of the individual pulp layers can also be activated by at least one steam blower box before Vergautschen.
  • the multilayer paper or board webs produced by the known methods and devices always have a high density with a relatively small volume.
  • the object of the present invention is to provide a method and an apparatus for producing a multilayer fibrous web, in particular a paper or board web, which is the cost-effective production of a multilayer fibrous web with improved strength in the z direction and with an increased volume while reducing the Density allows.
  • a method for producing a single-layer or multi-layer fibrous web comprising at least one fibrous layer, in particular a paper or board web comprises at least the following steps: providing at least one fibrous suspension having a moisture content of between 99.9 and 85.0% by weight in at least a reservoir or at least one supply line; Direct feeding of the pulp suspension from the storage container or the supply line to at least one fiberizing device for pulping and / or separating the pulp suspension to individual fibers and / or fiber groups and applying the individual fibers and / or fiber groups of the pulp suspension to at least one permeable or non-permeable conveyor belt for forming the at least one fibrous layer. This means that a direct application of the pulp suspension takes place on the fiberizing device.
  • the fibers and / or fiber groups thus isolated can form a very loose and porous pulp layer.
  • Such a fibrous layer with a highly porous structure can not be formed in the usual and known wet Faserstofflagen- or sheet formation.
  • fibrillating and / or separating the pulp suspension creates a porous fiber layer in which the fibers and / or fiber groups are reoriented, so that a strong Alignment portion of the fibers is given in the z direction.
  • the method according to the invention results in a single-layer or multi-layer fibrous web having a high rigidity and good thermal insulation properties.
  • the moisture content of the pulp suspension can be, for example, values of 99.9% by weight, 99.5% by weight, 99.0% by weight, 98.5% by weight, 98.0% by weight, 97.5% by weight, 97.0% by weight %, 96.5 wt.%, 96.0 wt.%, 95.5 wt.%, 95.0 wt.%, 94.5 wt.%, 94.0 wt.%, 93.5 wt.%, 93.0 wt.
  • the moisture content of the pulp suspension can be between 97.5 and 95% by weight.
  • Applying the individual fibers and / or fiber groups of the pulp suspension to at least one permeable or non-permeable conveyor belt to form the at least one fiber layer is understood that the individual fibers and / or fiber groups directly on the conveyor belt or on at least one, already on the Applied conveyor belt and formed fiber layer can be applied.
  • the individual fibers and / or fiber groups can be applied to one or more conventionally formed fiber layers to cover an intermediate fiber layer and covered with at least one further conventionally formed fiber layer. This is usually done before Vergautschen the individual pulp layers.
  • Other combinations of conventional and inventively formed fiber layers to form different multi-layer fibrous webs are conceivable and possible.
  • the inventive method advantageously requires a significantly reduced amount of water for the preparation of the individual fiber webs produced according to the invention. This results in a significant saving of water and energy resources.
  • At least two pulp suspensions are provided in one or more storage containers or supply lines.
  • the pulp suspensions are in each case fed directly to at least one fiberizing device for pulping and / or for separating the individual pulp suspensions into individual fibers and / or fiber groups.
  • the individual pulp suspensions can each be fed to a predetermined fiberizing device.
  • the individual pulp suspensions may also have the same or different compositions in addition to the same or different moisture contents. For example, cellulosic pulps having different proportions of plastic fibers and / or mineral fibers may be used.
  • the method according to the invention can thus be used to produce a large number of single-layer or multi-layer fibrous webs with a wide variety of physical and / or chemical properties.
  • a fibrous suspension formed on a permeable or non-permeable conveyor belt pulp layer by means of at least one Zerfaserungsvorraum at a moisture content between 95 and 40 wt .-% in turn shredded to individual fibers and / or fiber groups and / or isolated.
  • These individual fibers and / or fiber groups can in turn form a porous fibrous layer, which can be connected to and / or applied to other porous fibrous layers produced according to the invention or conventionally formed.
  • the at least one porous fibrous material layer is covered with at least one further porous or non-porous fibrous material layer to form the multilayer fibrous web.
  • a thickness calibration of the at least one fibrous material layer and / or the superimposed fibrous material layers can be carried out before the greening. This contributes in particular to the quality improvement of the resulting fibrous web.
  • the pulp suspension contains cellulosic pulps.
  • these may be mechanically or chemically disrupted pulps, in particular wood pulps and / or pulps.
  • the pulp suspensions recycled fibers from waste paper or old cardboard can be added.
  • a certain proportion of artificial, in particular plastic fibers and / or mineral fibers may optionally be added to the pulp suspensions.
  • the aforementioned conveyor belts may be at least partially formed as felts or screens.
  • additives such as binders, retention agents, fillers, dyes, bleach, wet strength agent, nano-cellulose and / or others in the paper and board production additives used to influence the production process and the properties and processability of the resulting multilayer fibrous web in the desired manner.
  • Suitable fillers are usually Minerals such as kaolin, talc or calcium carbonate.
  • starch can be added to the fiber layers or to the resulting fiber web by means of a size press or a starch bath.
  • polyethylene pulp may be added to the pulp suspensions, for example.
  • biopolymers for example hemicellulose, cellulose, lignin and / or polyoses, and / or polysaccharides, for example starch, starch polymers, alginates, chitins, hemicellulose, cellulose derivatives, cellulose esters, cellulose acetate, cellulose triacetate, cellulose nitrate, cellulose ethers, ethylcellulose, methylcellulose, Oxyethylcellulose, oxypropylcellulose and carboxymethylcellulose are used.
  • starch polymers for example hemicellulose, cellulose, lignin and / or polyoses, and / or polysaccharides, for example starch, starch polymers, alginates, chitins, hemicellulose, cellulose derivatives, cellulose esters, cellulose acetate, cellulose triacetate, cellulose nitrate, cellulose ethers, ethylcellulose, methylcellulose, Oxyethylcellulose, oxypropylcellulose and carb
  • resins such as phenol-formaldehyde resins, melamine-formaldehyde resins, mixtures of phenol-formaldehyde resins and melamine-formaldehyde resins, neutral or anionic polymers, polyvinyl alcohol, polyacrylamide, anionic or cationic polyelectrolytes such as acrylic acid, carboxymethylcellulose, anionic or cationic starch, polydiallyldiamonium chloride (PolyDADMAC)) or polyvinylamine, natural dry strength agents such as galactomannan or alginates, synthetic dry strength agents such as polyamines, polyamides, polyalcohols, polyacrylamides, polyvinyl alcohol, polyvinyl (alcohol acetate), polyimines or polyethylenimine (PEI), crosslinking or physical wet strength agents such as glyoxal, glutardialdehyde (1,5-pentanedialdehyde) , Aldehy
  • additives from the groups, fixatives, aluminum salts, flame retardants, defoamers, deaerators, lignin derivatives, lignosulfonates, biocides and / or fungicides may also be used.
  • the additives / auxiliaries can in principle be one or more times at the same point and / or at different points of the Be added manufacturing process.
  • the auxiliary agent (s) it is also possible for the auxiliary agent (s) to be added via the at least one fiberizing device to the at least one fiber layer and / or to the individual fibers and / or fiber groups of the at least one fibrous suspension.
  • the invention further relates to a device for producing a multilayer fibrous web, in particular a paper or board web, comprising at least one fibrous layer, the device comprising at least one reservoir or a feed line for receiving and delivering at least one fibrous suspension having a moisture content between 99.9 and 85, 0 wt .-%, at least one Zerfaserungsvoriques for pulping and / or for separating the pulp suspension to individual fibers and / or fiber groups comprises.
  • the storage container or the supply line is arranged such that a direct feeding of the pulp suspension takes place to the fiberizing device. This means that a direct application of the pulp suspension takes place on the fiberizing device.
  • a single-layer or multi-layer fibrous web can advantageously be produced by the device according to the invention, which on the one hand is inexpensive to produce and has improved strength in the z-direction (perpendicular to the fiber web level).
  • the moisture content of the pulp suspension can be, for example, values of 99.9% by weight, 99.5% by weight, 99.0% by weight, 98.5% by weight, 98.0% by weight, 97.5% by weight, 97.0% by weight %, 96.5 wt.%, 96.0 wt.%, 95.5 wt.%, 95.0 wt.%, 94.5 wt.%, 94.0 wt.%, 93.5 wt.%, 93.0 wt.
  • the moisture content of the pulp suspension can be between 97.5 and 95% by weight.
  • the space requirement is advantageously reduced in the device according to the invention, since here a direct processing or a direct order of the pulp suspension via a corresponding Zerfaserungsvoriques without interposition of a conveyor belt takes place. But this also results in lower investment costs.
  • the single-layer or multi-layer fibrous web produced with the device according to the invention has an increased volume with a simultaneous reduction in the density. Finally, a high rigidity and good thermal insulation properties of the single-layer or multi-layer fibrous web produced in this way are to be observed.
  • the at least one fiberizing device can be arranged along a respective transport direction (T) of at least one permeable or non-permeable conveyor belt such that an application of the individual fibers and / or fiber groups of one or more pulp suspensions to the at least one or more conveyor belts takes place.
  • the fibrous layer is formed by the application to the at least one moving conveyor belt.
  • the aforementioned conveyor belts may be at least partially formed as felts or screens.
  • the at least one fiberizing device is designed such that it can be swung in and out of the production line as required.
  • Applying the individual fibers and / or fiber groups of the pulp suspension to at least one moving permeable or non-permeable conveyor belt to form the at least one fiber layer is understood that the individual fibers and / or fiber groups directly on the conveyor belt or on at least one, already on applied to the conveyor belt and formed fiber layer can be applied.
  • the individual fibers and / or fiber groups can be applied, for example, to form an intermediate fiber layer on one or more conventionally formed fiber layers and with at least one further conventionally formed pulp layer are covered. This is usually done before Vergautschen the individual pulp layers. Other combinations of conventional and inventively formed fiber layers to form different multi-layer fibrous webs are conceivable and possible.
  • the Zerfaserungsvoretti comb, brush or roller-like or formed as a water jet or air pressure device the water jet or air pressure device may be rotating or non-rotating and at least one pulsating or non-pulsating water jet or air jet Defibration and / or produced for separation of the pulp suspension.
  • Other refinements of the fiberizing device are also conceivable, and these must enable defibration and / or singulation of the fibrous suspension to form individual fibers and / or fiber groups.
  • the defibering device has at least one opening for dispensing at least one adjuvant used in paper and board production from the group consisting of binders, retention aids, fillers, dyes, bleaches, wet strength agents, nano-cellulose or other substances present in paper and cardboard. and board making has used adjuvants.
  • the delivery of at least one auxiliary used in the paper and board production can also take place via known devices, such as a spray bar.
  • the device comprises at least one pressing device for covering at least the second fibrous layer with a porous fibrous layer formed from the defibred and / or separated fibers and / or fiber groups and / or at least one drying device for drying the multilayer fibrous web and / or or at least one calender and / or at least one glueing and / or gluing device and / or at least one calibrating unit and / or at least one picking device for picking up the fibrous web from the corresponding conveyor belt and / or at least one application device for additives and / or at least one cutting device.
  • the device according to the invention may comprise one or more of said machine elements.
  • the present invention also includes a multi-ply fibrous web made by a method as described and / or made by means of a device also described above.
  • Fig. 1 shows a schematic representation of an apparatus 10 for producing a multilayer fibrous web 48.
  • the illustrated fibrous web 10 is a board web comprising three pulp layers 28, 30, 32.
  • the apparatus 10 comprises a total of three reservoirs 12, 14, 16 for receiving and Dispensing each of a pulp suspension 24, 34, 36 each having a moisture content between 99.9 and 85.0 wt .-%.
  • the compositions of the individual pulp suspensions 24, 34, 36 are designed differently.
  • the different pulp suspensions 12, 14, 16 may have, for example, different proportions of fresh and recycled fibers.
  • the compositions of the individual pulp suspensions 24, 34, 36 are identical.
  • the level of fibrous suspensions 24, 34, 36 within the reservoirs 12, 14, 16 may be regulated, for example via a supply pump (not shown).
  • the apparatus 10 further comprises three shredding devices 18, 20, 22 for shredding and / or separating the pulp suspensions 24, 34, 36 into individual fibers and / or fiber groups 42, 44, 46.
  • the respective storage containers 12, 24, 26 and the associated Zerfaserungsvortechniken 18, 20, 22 arranged in such a way that a direct feeding or a direct order of the pulp suspensions 24, 34, 36 to the respective Zerfaserungsvortechniken 18, 20, 22 takes place.
  • the fiberizing devices 18, 20, 22 are cylindrical in the illustrated embodiment, wherein on the respective cylinders corresponding bristles or prongs 38 for singling and / or defibration of the pulp suspensions 24, 34, 36 are arranged.
  • the fiberizing devices 18, 20, 22 rotate in opposite directions to a transport direction T or a direction of rotation of a corresponding deflection roller 40 of a permeable or non-permeable conveyor belt 26.
  • the individual fibers and / or fiber groups 42, 44, 46 of the pulp suspensions 24, 34, 36 are successively applied to the conveyor belt 26, which in the present embodiment is designed as a sieve.
  • the fibrous web 48 is composed of the respective fibrous webs 28, 30, 32.
  • the thus formed multi-layer fibrous web 48 is then sent for further processing, for example, a Vergautschen (not shown).
  • Fig. 2 shows a schematic representation of an alternative embodiment of an apparatus 10 'for producing a multilayer fibrous web 48.
  • the device 10 comprises a first headbox 50 via which a first pulp suspension 52 is applied to the first permeable or non-permeable conveyor belt 26.
  • a first pulp layer 54 is formed from the first pulp suspension 52.
  • the conveyor belt 26 is in turn moved in the transport direction T by means of a plurality of deflection and transport rollers, for example by means of the transport and deflection roller 40.
  • a storage container 12 with a second fiber suspension 24 is arranged above the conveyor belt 26 and in the transport direction T after the first headbox 50.
  • the fiberizing device 18 is used again to fiberize and / or singulate the pulp suspension 24 into individual fibers and / or fiber groups 42.
  • the fiberized and / or fiberized fibers 42 and / or fiber groups 42 are applied to the first fiber web layer 54 and in turn form a movement of the conveyor belt 26 porous fibrous layer 28 from.
  • This porous fiber layer 28 has, in particular, fibers and / or fiber groups which are arranged protruding in the z direction, that is to say out of the x / y plane of the fibrous web 48. This results in a relatively high volume of the porous pulp layer 28 at a relatively low density. Furthermore, a high strength of the thus formed multilayer fibrous web 48 in the z-direction can be achieved.
  • a third pulp layer 60 is applied to the porous pulp layer 28.
  • the third pulp layer 60 is formed via a second headbox 56, which applies a third pulp suspension 58 to another permeable or non-permeable conveyor belt 62.
  • All pulp suspensions 24, 52, 58 contain pulps based on cellulose or other sources. These may be so-called fresh fibers and / or recycled fibers and / or artificially produced fibers. However, the compositions of the pulp suspensions 24, 52, 56 can also be identical.
  • the porous fibrous material layer 28 with the first fibrous material layer 54 serving as the backsheet and the fibrous material layer 60 serving as the topsheet are doctored by means of a pressing device 64. After Vergautschen a drying of the multi-layer fibrous web 48 and optionally the order of one or more strokes. Furthermore, the device 10 'has a removal device 66 for removing the fibrous web 48 from the conveyor belt 26. After leaving the device 10 ', the multi-layer fibrous web 48 can be further processed.
  • the arrows marked T in the FIGS. 1 and 2 represent the transport directions of the conveyor belts 26, 62. By the movement of the conveyor belt 26, the porous pulp layer 28 forms.

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EP14154809.9A 2014-02-12 2014-02-12 Procédé et dispositif de fabrication d'une bande de matière fibreuse à une ou plusieurs couches et bande de matière fibreuse à une ou plusieurs couches fabriquée de cette manière Ceased EP2907916A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP14154809.9A EP2907916A1 (fr) 2014-02-12 2014-02-12 Procédé et dispositif de fabrication d'une bande de matière fibreuse à une ou plusieurs couches et bande de matière fibreuse à une ou plusieurs couches fabriquée de cette manière
PCT/EP2015/052435 WO2015121152A1 (fr) 2014-02-12 2015-02-05 Procédé et dispositif de production d'une bande de matière fibreuse monocouche ou multicouches et bande de matière fibreuse monocouche ou multicouches produite par ce procédé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14154809.9A EP2907916A1 (fr) 2014-02-12 2014-02-12 Procédé et dispositif de fabrication d'une bande de matière fibreuse à une ou plusieurs couches et bande de matière fibreuse à une ou plusieurs couches fabriquée de cette manière

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Publication Number Publication Date
EP2907916A1 true EP2907916A1 (fr) 2015-08-19

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EP14154809.9A Ceased EP2907916A1 (fr) 2014-02-12 2014-02-12 Procédé et dispositif de fabrication d'une bande de matière fibreuse à une ou plusieurs couches et bande de matière fibreuse à une ou plusieurs couches fabriquée de cette manière

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EP (1) EP2907916A1 (fr)
WO (1) WO2015121152A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1064949A (en) * 1964-03-31 1967-04-12 Wilhelm Holzhauer Process for the removal of water from suspensions of fibrous materials
WO1993004234A1 (fr) * 1991-08-16 1993-03-04 Sunds Defibrator Industries Aktiebolag Procede de deshydratation d'une suspension pateuse
WO1998000603A1 (fr) * 1996-06-27 1998-01-08 Andritz-Patentverwaltungs-Gesellschaft Mbh Procede et dispositif pour repartir une suspension de substance fibreuse, notamment de consistance moyenne
EP1138822A2 (fr) * 2000-03-30 2001-10-04 Voith Paper Patent GmbH Dispositif pour la fabrication d' une bande fibreuse à plusieurs couches
EP1422340A1 (fr) 2002-11-21 2004-05-26 Voith Paper Patent GmbH Procédé et partie toile d'une machine pour la frabrication d'une bande fibreuse multi-couches
WO2009063135A1 (fr) * 2007-11-14 2009-05-22 Metso Paper, Inc. Procédé pour délivrer une pâte à haute consistance à un support de formation et à une caisse de tête de pâte à haute consistance
WO2009136008A2 (fr) * 2008-05-09 2009-11-12 Metso Paper, Inc. Procédé et appareil d’amenée d’une pâte de fibres à un support de formation

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1064949A (en) * 1964-03-31 1967-04-12 Wilhelm Holzhauer Process for the removal of water from suspensions of fibrous materials
WO1993004234A1 (fr) * 1991-08-16 1993-03-04 Sunds Defibrator Industries Aktiebolag Procede de deshydratation d'une suspension pateuse
WO1998000603A1 (fr) * 1996-06-27 1998-01-08 Andritz-Patentverwaltungs-Gesellschaft Mbh Procede et dispositif pour repartir une suspension de substance fibreuse, notamment de consistance moyenne
EP1138822A2 (fr) * 2000-03-30 2001-10-04 Voith Paper Patent GmbH Dispositif pour la fabrication d' une bande fibreuse à plusieurs couches
EP1422340A1 (fr) 2002-11-21 2004-05-26 Voith Paper Patent GmbH Procédé et partie toile d'une machine pour la frabrication d'une bande fibreuse multi-couches
WO2009063135A1 (fr) * 2007-11-14 2009-05-22 Metso Paper, Inc. Procédé pour délivrer une pâte à haute consistance à un support de formation et à une caisse de tête de pâte à haute consistance
WO2009136008A2 (fr) * 2008-05-09 2009-11-12 Metso Paper, Inc. Procédé et appareil d’amenée d’une pâte de fibres à un support de formation

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