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EP2784212A1 - Papier- oder Kartonherstellungsmaschine und Verfahren zum Herstellen von Papier oder Karton mit hohem Füllstoffgehalt - Google Patents

Papier- oder Kartonherstellungsmaschine und Verfahren zum Herstellen von Papier oder Karton mit hohem Füllstoffgehalt Download PDF

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Publication number
EP2784212A1
EP2784212A1 EP13161553.6A EP13161553A EP2784212A1 EP 2784212 A1 EP2784212 A1 EP 2784212A1 EP 13161553 A EP13161553 A EP 13161553A EP 2784212 A1 EP2784212 A1 EP 2784212A1
Authority
EP
European Patent Office
Prior art keywords
drying
web
paper
section
making machine
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.)
Withdrawn
Application number
EP13161553.6A
Other languages
English (en)
French (fr)
Inventor
Sami Anttilainen
Kari Juppi
Timo Valkama
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.)
Valmet Technologies Oy
Original Assignee
Valmet Technologies Oy
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 Valmet Technologies Oy filed Critical Valmet Technologies Oy
Priority to EP13161553.6A priority Critical patent/EP2784212A1/de
Priority to CN201410095851.9A priority patent/CN104074091A/zh
Publication of EP2784212A1 publication Critical patent/EP2784212A1/de
Withdrawn legal-status Critical Current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
    • D21F1/02—Head boxes of Fourdrinier machines
    • D21F1/026—Details of the turbulence section
    • 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
    • D21F1/028—Details of the nozzle section
    • 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
    • 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
    • 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
    • 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
    • D21F9/02—Complete machines for making continuous webs of paper of the Fourdrinier type

Definitions

  • the invention pertains to a paper or board making machine for manufacturing high filler content paper or board and to a corresponding method.
  • the inventors of the present invention have found that it is possible to improve the paper or board strength by adding starch or a larger amount of refined fiber, or some other chemicals, to a web middle layer. If it was possible to provide the mentioned reinforcing material into the middle of the web, but not into its boundary layers (i.e. at the surface of the paper or board web), the strength properties of the web could be remarkably improved. Thus, a larger amount of filler can be added to the paper, while the strength properties of the paper can be maintained in the required range.
  • a paper or board making machine comprises a forming section in which at least one wire arranged in a wire loop is provided for forming a web from a fiber suspension, a closed draw press section in which at least two press nips being formed between two rolls each are provided for dewatering the web transferred from the forming section, and a drying section in which at least one drying cylinder is provided for drying the web transferred from the closed draw press section.
  • the forming section comprises a headbox being capable of supplying liquids onto the wire in a layered manner and comprising a turbulence generator and a nozzle chamber having two converging walls forming a nozzle outlet.
  • the turbulence generator has at least three diffusers creating turbulence in liquids supplied into each respective diffuser via feeding means for feeding pulp suspension and/or water as liquids.
  • Each of the diffusers has an outlet into the nozzle chamber.
  • a central diffuser of the at least three diffusers has two blades arranged at its outlet and extending into the nozzle chamber in a converging manner. The blades separate a liquid flowing through the central diffuser from liquids flowing through the adjacent diffusers.
  • an impingement drying means is arranged before the at least one drying cylinder in the drying section.
  • the position of the blade tips results in that the central layer consisting mainly of water at its boundaries does not get mixed with the adjacent pulp suspension layers.
  • the individual liquids stay separated from each other due to the blades.
  • another effect of the blades is a slowing down of the turbulences in the boundary areas of each liquid layer. Accordingly, it is possible to supply the desired amounts of additives such as filler, starch or refined fibers in order to set the properties of the later paper or board web by supplying them to a centrally arranged water layer.
  • the different liquids can be supplied to a wire in a forming section in a layered manner, thus maintaining the purity of the individual liquid layers. Since mixing of the layers cannot take place at all, various additives such as filler materials, refined fibers, cationic starch, etc. in the water layer maintain their position in the center of the web to be formed, but are not distributed to the pulp suspension layers. Accordingly, a degradation of the additives caused by mixing and a subsequent interaction with materials from an adjacent liquid layer can be avoided. Thus, the desired properties of the additives are maintained. Accordingly, adjusting the required properties of the later paper or cardboard is easily enabled by supplying the respective materials with the respective layer, because a degradation of the individual material properties of the additives due to mixing with the respectively adjacent layer cannot take place.
  • various additives such as filler materials, refined fibers, cationic starch, etc. in the water layer maintain their position in the center of the web to be formed, but are not distributed to the pulp suspension layers. Accordingly, a degradation of the additives caused by mixing and a subsequent
  • one or more of the adjacent diffusers can have an additional blade arranged at the outlet, and the additional blade has a shorter length than the adjacent blade of the central diffuser.
  • the forming section can comprise a gap former or a hybrid former
  • the closed draw press section can comprise at least two subsequently arranged shoe press rolls
  • the impingement drying means can be arranged next to the closed draw press section.
  • the impingement drying means can comprise a horizontally and/or a vertically arranged impingement dryer.
  • an improved dry content of more than 60% can be achieved before the web enters the cylinder drying section.
  • the traveling path of the web can be curved in the impingement drying means.
  • the runnability of the web can be improved and installation space for the paper or board making machine can be saved.
  • the number of drying cylinders can be less than 20 and a running speed in the drying section can be at least 1600 m/min. Due to the increased dry content of the web, the size of the drying section can be reduced, while the running speed in the drying section can be increased. Accordingly, while the machine can be downsized, the output can be increased.
  • the headbox can eject the liquids in an upwards direction into a gap formed between the at least one wire and a second wire, while both wires may run in a vertical upwards direction.
  • both wires may run in a vertical upwards direction.
  • a method for making a high filler content fiber web comprises the step of supplying liquids in a layered manner onto a wire of a forming section of a paper or board making machine to form a web.
  • the liquid layers supplied onto the wire comprise at least two pulp layers separated by a central water layer.
  • the formed web is then transferred through a closed draw press section comprising at least two press nips being formed between two rolls each for dewatering the web in order to keep bulk in an acceptable range, and through a drying section in which at least one drying cylinder is provided for drying the web transferred from the closed draw press section.
  • the filler content in the fiber web ranges from 30% to 50%.
  • the central water layer comprises fresh water, dilution water, and/or white water.
  • starch and/or refined fibers are added to the central water layer before supplying the central water layer onto the wire.
  • a drying content of the web is more than 60% before it is transferred to the cylinder drying section.
  • a running speed of the web in the drying section is at least 1600 m/min.
  • a technology is provided by which it is possible to control the quality and strength of the web, although the filler content is largely increased when compared to prior art solutions. Adding filler causes losing of web strength. Thus, way tail threading as well as runnability at the beginning of the drying section requires a certain attention. However, these drawbacks are overcome in that the dry content before the cylinder drying section remarkably improves when the filler content is higher.
  • the impingement drying unit is arranged at the beginning of the drying section before the wet and cold web gets into contact with the hot drying cylinders. Accordingly, the web temperature increases and the web dry content rises. For instance, with a filler level of 40%, the web dry content exceeds 60%. Furthermore, downstream of the impingement drying unit, control of the web in tail threading and normal running is remarkable easy in the drying section.
  • a headbox 99 comprises headers 39, 41, and 43, to which liquids such as pulp suspension and/or water are fed by headbox fan pumps (not shown), a manifold in which feeding pipes 25, 27, and 29 are provided, a diffuser chamber in which diffuser tubes 1, 3, 5, 7, and 9 are provided, and a nozzle chamber having converging walls 21, 22 forming a slice opening (nozzle outlet) 24.
  • Manifold pipes 25, 27, and 29 establish communication from the headers 39, 41, and 43 to the diffuser tubes 1, 3, 5, 7, and 9. Blades 11, 13, 15, and 17 are respectively attached to outlets of the diffuser tubes 1, 3, 5, 7, and 9 via joints 31, 33, 35 and 37.
  • Blades 11, 13, 15, and 17 have a wedge shaped cross-section, in which a thick end is attached to the respective diffuser tube while a thin end 11a, 13a, 15a, and 17a projects towards the slice opening.
  • the blades are provided in a staggered manner, i.e. blades 11 and 13 as central blades lengthwise extend beyond blades 15 and 17.
  • the blades 11, 13, 15, and 17 maintain the individual liquid layers separate before the liquids are ejected towards a forming section of a paper or board making machine.
  • Each of the blades 11, 13, 15, and 17 is attached to a wall portion between the respective diffuser tubes 1, 3, 5, 7, and 9 via joints 31, 33, 35, and 37 in a freely pivotable manner.
  • each of the diffuser tubes 1, 3, and 7 is respectively continued by two of blades 11, 13, 15, and 17.
  • the uppermost and lowermost diffuser tubes 5 and 9 are continued by blade 15 and nozzle chamber wall 22 and blade 17 and nozzle chamber wall 21, respectively.
  • a transition from the diffuser tubes 1, 3, 5, 7, and 9 towards the nozzle chamber, i.e. the respective blades 11, 13, 15, and 17 and nozzle chamber walls 21 and 22, is formed in a uniform and smooth manner in order to avoid obstacles agitating the respective flow and liquid. This serves to avoid a further generation of turbulence and a corresponding agitation of the boundaries of the respective liquid layers emerging from the diffuser tubes 1, 3, 5, 7, and 9 in between the blades 11, 13, 15, and 17 and nozzle chamber walls 21 and 22, respectively.
  • the length of blades 15 and 17 can be chosen such that there is sufficient distance to the tip ends 11a, 13a of blades 11, 13 for ensuring that individual stock or pulp suspension will merge together.
  • the blades 11, 13 and the nozzle chamber walls 21 and 22 maintain turbulence in the stock or pulp suspension liquid flows.
  • the liquids are ejected via slice opening 24 in a layered manner onto a wire or fabric of a forming section for further treatment, such as dewatering, pressing and drying.
  • the distance from the tip ends 11a, 13a of blades 11, 13 to the forming section is short for ensuring the layered structure. Since thin blade tip ends 11a, 13a improve a layered structure of the web to a greater extent, the thickness of the blade tip end is less than 0.5 mm, preferably less than 0.3 mm. Thus, in the forming section a web W is formed.
  • a slice lip 23 is provided at the upper nozzle chamber wall 22.
  • Slice lip 23 can be adjusted in its position, i.e. in particular its reach can be adjusted by known means such as horizontal or vertical slice positioners, micro adjusters, etc. To simplify matters, these are not shown in the drawing.
  • a slice reach R is preferably 1 to 10 mm, thereby advantageously acting on the ejected liquid flow (also referred to as "free jet") without affecting the purity of the individual liquid layers. Accordingly, by means of the headbox structure according to the invention, it is possible to influence the ejected liquid flow to a much higher degree than is known from the prior art.
  • the additives and other substances present in the respective liquid layers do not interact with each other, because a mixing of the individual liquid layers can be surely excluded.
  • adjusting the properties of the later paper or board by introducing additives or other substances into the stock or pulp suspension liquids/water is facilitated.
  • particularly the amount of filler in the water layer can be increased, thereby achieving a remarkable cost reduction compared to paper or board having a comparably high filler content.
  • Fig. 3 shows a paper machine in accordance with the invention.
  • the paper machine comprises a forming section 101, a press section 102 and a drying section 103.
  • the forming section 101 comprises a gap former.
  • the press section 102 has two press portions 102a and 102b, each of which comprises a press nip formed between respective two press rolls 118 and 119.
  • the drying section 103 has impingement dryers 123, 124 arranged before a first cylinder group 125.
  • the forming section 101 of Fig. 3 comprises the headbox 99, a bottom wire 105 forming an endless loop while guided by a breast roll 106, suction rolls 107a and 107b and guide rolls 108, and a top wire 109 forming a second endless loop while guided by a breast roll 106 and guide rolls 110.
  • the forming section is arranged in a vertical manner.
  • the bottom wire loop is arranged on the right side and above headbox 99
  • the top wire loop is arranged on the left side and above headbox 99.
  • the bottom wire 105 and the top wire 109 define a twin-wire portion between themselves.
  • a fiber suspension is fed from the headbox 99 into a gap formed between the bottom wire 105 and the top wire 109.
  • a dewatering box arrangement 111 provided with a curved deck and guiding the top wire 109 onto the surface of the fiber suspension layer present between the bottom wire 105 and the top wire 109.
  • suction roll 107a After the dewatering box arrangement 111 on the side of the bottom wire 105, there is a first suction roll 107a, which turns the web W still sandwiched between the bottom wire 105 to run to the right. Furthermore, the top wire 109 is guided such that, in the area of suction roll 107a, the top wire 109 is separated from the bottom wire 105 and the web is kept with the bottom wire 105 by means of suction roll 107a. Suction roll 107a is further followed by a suction roll 107b. Suction roll 107b is arranged at a lower level than suction roll 107a. Accordingly, the web W is transported in an oblique and downward manner towards suction roll 107b. Suction roll 107b is then followed by a suction box 114, on which the dry solids content of the web W is raised before it is transferred to the first press loop 102a of the press section 102.
  • the web W is passed from the downward oblique portion of the bottom wire 105 to a pick-up felt 115 of the first press portion 102a of press section 102 by means of a pickup roll 116.
  • the press section 102 has two corresponding press portions 102a and 102b being subsequently arranged.
  • press portion 102b more or less corresponds to press portion 102a, corresponding elements have been provided with the same reference signs, and a repetition of their description will be omitted.
  • the press nip N is formed between two press rolls 118, 119, the upper one of which is a shoe roll 118 and the lower is a counter roll 119.
  • the shoe roll 118 is provided with a static concave surface, around which a flexible shell is rotating.
  • the web W is passed through the nip N sandwiched between the pickup felt 115 also functioning as a top felt and a bottom felt 117, which both receive water being pressed out of the web.
  • the counter roll 119 presses the felts (fabrics) 115, 117 and the web W against the concave surface of the shoe roll 118, thereby forming a so called extended nip, the length of said nip being greater than that of a nip formed by two hard-surfaced rolls.
  • a suction roll 120 Downstream of the nip N on the side of the bottom felt 117 there is a suction roll 120, one function of which is to ensure that the web W follows the bottom felt 117 at the stage when the top felt 115 is separated from the web W. After that, the web W is transferred from the bottom felt 117 by means of a pickup roll 116 arranged in the second press loop 102b onto the pick-up felt 115 of the second press portion 102b.
  • the treatment of the web i.e. pressing is performed in an identical manner as in the first press portion 102a.
  • the web W Downstream of the press nip N when the top felt 115 is separated from the web W in the second press portion 102b, the web W is transferred from the bottom felt 117 by means of a transfer fabric 121 to a first drying fabric 122 of the drying section 103. Transfer to the transfer fabric is effected by means of another pickup roll 135 arranged in the loop formed by the transfer fabric 121.
  • the drying section 103 first comprises a horizontal impingement dryer 123, which is followed by a vertical impingement dryer 124 and at least one drying cylinder group 125.
  • the horizontal impingement dryer 123 comprises a blow unit 126 and the drying fabric 122 forming an endless loop while guided by support rolls 127.
  • the support rolls are arranged in a convex manner, i.e. while passing the impingement dryer 123, the traveling path of the web is curved towards the blow unit 126. Heated air is blown from the blow unit 126 towards the web W when it travels under the blow unit 126 while being supported by the drying fabric 122 and the support rolls 127, so that the web W is heated and water evaporates from its surface.
  • the web W is transferred from the first drying fabric 122 to a second drying fabric 128, which conveys the web W through both the vertical impingement dryer 124 and the first drying cylinder group 125.
  • the drying fabric 128 first forms, a vertical loop, blow units 130 and 131 being disposed on two opposing vertical portions of the vertical loop.
  • the first blow unit 130 blows heated air to the surface of the web W while it runs vertically in a downward direction and the second blow unit 131 blows heated air against the web W while it runs back in an upward direction.
  • the support rolls 129 are also arranged in a convex manner such that the traveling path of the web is curved towards the blow units 130 and 131, respectively.
  • the web W is passed, while supported by the drying fabric 128, along a meandering path through the first drying group 125 comprising a number of steam-heated drying cylinders 132 in an upper row and a number of reversing rolls 133 in a lower row. It is to be noted that, after the first drying cylinder group 125 there can be one or more other drying cylinder groups, which can comprise one or two wires.
  • the web is passed as a closed draw the whole distance from the forming section 101 through the press section 102 to the beginning of the drying section 103.
  • the web is not stretched unnecessarily and the number of breaks advantageously can be minimized.
  • Fig. 4 is a schematic diagram showing the internal strength increase of the web when increasing the amount of starch in the web.
  • the dashed line represents a case where the starch is added according to the prior art technology, i.e. the starch is added to the machine chest.
  • the solid line represents a case where the starch is added to water (white water or fresh water) supplied via the headbox 99 and forming a central pure water layer between two or more pulp suspension layers when being ejected into the gap between the two forming wires 105 and 109.

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  • Paper (AREA)
EP13161553.6A 2013-03-28 2013-03-28 Papier- oder Kartonherstellungsmaschine und Verfahren zum Herstellen von Papier oder Karton mit hohem Füllstoffgehalt Withdrawn EP2784212A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP13161553.6A EP2784212A1 (de) 2013-03-28 2013-03-28 Papier- oder Kartonherstellungsmaschine und Verfahren zum Herstellen von Papier oder Karton mit hohem Füllstoffgehalt
CN201410095851.9A CN104074091A (zh) 2013-03-28 2014-03-14 制造高填料含量的纸或纸板的造纸机或纸板机以及方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13161553.6A EP2784212A1 (de) 2013-03-28 2013-03-28 Papier- oder Kartonherstellungsmaschine und Verfahren zum Herstellen von Papier oder Karton mit hohem Füllstoffgehalt

Publications (1)

Publication Number Publication Date
EP2784212A1 true EP2784212A1 (de) 2014-10-01

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Family Applications (1)

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EP13161553.6A Withdrawn EP2784212A1 (de) 2013-03-28 2013-03-28 Papier- oder Kartonherstellungsmaschine und Verfahren zum Herstellen von Papier oder Karton mit hohem Füllstoffgehalt

Country Status (2)

Country Link
EP (1) EP2784212A1 (de)
CN (1) CN104074091A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016083172A1 (de) * 2014-11-28 2016-06-02 Voith Patent Gmbh Vorrichtung zur herstellung einer faserstoffbahn
WO2017092931A1 (de) * 2015-11-30 2017-06-08 Voith Patent Gmbh Vorrichtung zur herstellung einer faserstoffbahn
WO2017092933A1 (de) * 2015-11-30 2017-06-08 Voith Patent Gmbh Vorrichtung und verfahren zur herstellung einer faserstoffbahn
WO2017092932A1 (de) * 2015-11-30 2017-06-08 Voith Patent Gmbh Vorrichtung zur herstellung einer faserstoffbahn
CN113584930A (zh) * 2021-07-15 2021-11-02 东莞市金田纸业有限公司 一种灰纸板生产设备及其生产方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015209389A1 (de) * 2015-05-22 2016-11-24 Voith Patent Gmbh Verfahren und Vorrichtung zur Herstellung von hochgefüllten Papieren
DE102015223660A1 (de) * 2015-11-30 2017-06-01 Voith Patent Gmbh Vorrichtung und verfahren zur herstellung einer faserstoffbahn
CN106868918A (zh) * 2017-01-25 2017-06-20 广东华泰纸业有限公司 一种瓦楞纸造纸系统

Citations (8)

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Publication number Priority date Publication date Assignee Title
GB1492324A (en) * 1974-01-17 1977-11-16 Beloit Corp Method of making a web of three or more plies
US4781793A (en) * 1986-07-04 1988-11-01 Valmet Oy Method for improving paper properties in multiply paper using long and short fiber layers
WO1997013031A1 (en) * 1995-10-04 1997-04-10 Valmet Corporation Method and device in a paper machine
EP1281807A2 (de) * 2001-07-30 2003-02-05 Voith Paper Patent GmbH Maschine zur Herstellung einer Faserstoffbahn
WO2005068713A1 (en) * 2004-01-15 2005-07-28 Metso Paper, Inc. Arrangement in a paper machine
WO2008034947A1 (en) 2006-09-21 2008-03-27 Metso Paper, Inc. Paper or board machine and method for manufacturing paper or board
DE102009025652A1 (de) * 2008-06-19 2009-12-24 Metso Paper, Inc. Verfahren in Verbindung mit einer Papiermaschine und eine Papiermaschine
WO2010086234A1 (de) * 2009-01-30 2010-08-05 Voith Patent Gmbh Vorrichtung zur herstellung einer materialbahn

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FI105118B (fi) * 1999-05-12 2000-06-15 Valmet Corp Menetelmä paperi- tai kartonkirainan valmistamiseksi ja paperi- tai kartonkikone
EP1313911B1 (de) * 2000-06-22 2007-09-05 Metso Paper Karlstad Aktiebolag Verfahren zur sicherung der planheit einer leitschaufel in einer papiermaschine durch eine aufnahmevorrichtung, stoffauflauf mit solcher aufnahmevorrrichtung und aufnahmevorrichtung dafür
FI118811B (fi) * 2000-11-06 2008-03-31 Metso Paper Inc Päällepuhalluskuivatusyksikkö ja kuivatusosa
FI122111B (fi) * 2004-01-15 2011-08-31 Metso Paper Inc Menetelmä ja laite paperikoneen kuivatusosassa

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1492324A (en) * 1974-01-17 1977-11-16 Beloit Corp Method of making a web of three or more plies
US4781793A (en) * 1986-07-04 1988-11-01 Valmet Oy Method for improving paper properties in multiply paper using long and short fiber layers
WO1997013031A1 (en) * 1995-10-04 1997-04-10 Valmet Corporation Method and device in a paper machine
EP1281807A2 (de) * 2001-07-30 2003-02-05 Voith Paper Patent GmbH Maschine zur Herstellung einer Faserstoffbahn
WO2005068713A1 (en) * 2004-01-15 2005-07-28 Metso Paper, Inc. Arrangement in a paper machine
WO2008034947A1 (en) 2006-09-21 2008-03-27 Metso Paper, Inc. Paper or board machine and method for manufacturing paper or board
DE102009025652A1 (de) * 2008-06-19 2009-12-24 Metso Paper, Inc. Verfahren in Verbindung mit einer Papiermaschine und eine Papiermaschine
WO2010086234A1 (de) * 2009-01-30 2010-08-05 Voith Patent Gmbh Vorrichtung zur herstellung einer materialbahn

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016083172A1 (de) * 2014-11-28 2016-06-02 Voith Patent Gmbh Vorrichtung zur herstellung einer faserstoffbahn
WO2017092931A1 (de) * 2015-11-30 2017-06-08 Voith Patent Gmbh Vorrichtung zur herstellung einer faserstoffbahn
WO2017092933A1 (de) * 2015-11-30 2017-06-08 Voith Patent Gmbh Vorrichtung und verfahren zur herstellung einer faserstoffbahn
WO2017092932A1 (de) * 2015-11-30 2017-06-08 Voith Patent Gmbh Vorrichtung zur herstellung einer faserstoffbahn
CN113584930A (zh) * 2021-07-15 2021-11-02 东莞市金田纸业有限公司 一种灰纸板生产设备及其生产方法
CN113584930B (zh) * 2021-07-15 2023-09-05 东莞市金田纸业有限公司 一种灰纸板生产设备及其生产方法

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