EP3212843B1 - Dispositif d'égouttage d'une bande de matière fibreuse - Google Patents

Dispositif d'égouttage d'une bande de matière fibreuse Download PDF

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Publication number
EP3212843B1
EP3212843B1 EP15777659.2A EP15777659A EP3212843B1 EP 3212843 B1 EP3212843 B1 EP 3212843B1 EP 15777659 A EP15777659 A EP 15777659A EP 3212843 B1 EP3212843 B1 EP 3212843B1
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EP
European Patent Office
Prior art keywords
press
belt
zone
fibrous web
fibre web
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EP15777659.2A
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German (de)
English (en)
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EP3212843A1 (fr
Inventor
Thomas Scherb
Luiz Carlos Silva
Hubert Walkenhaus
Joachim Henssler
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Voith Patent GmbH
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Voith Patent GmbH
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Publication of EP3212843A1 publication Critical patent/EP3212843A1/fr
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    • 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
    • D21F3/0209—Wet presses with extended press nip
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/006—Making patterned paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/14—Making cellulose wadding, filter or blotting paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/14—Making cellulose wadding, filter or blotting paper
    • D21F11/145—Making cellulose wadding, filter or blotting paper including a through-drying process
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/18—Drying webs by hot air
    • D21F5/182—Drying webs by hot air through perforated cylinders

Definitions

  • the present invention relates to a device for dewatering a fibrous web, in particular a paper, board or tissue web, with a belt press comprising a web-extended nip between a permeable press belt and an at least partially looped by the press belt curved surface of a counter element is formed, wherein the fibrous web is guided together with a permeable carrier tape through the press nip of the belt press and means are provided to pressurize at least a portion of the press nip the belt press so that it flows through the carrier belt and the fibrous web, wherein the Fluidbeaufyerungsffen comprise a blowing device which is arranged so that the fluid flows from the curved surface of the counter element of the belt press to the press belt of the belt press.
  • the document EP 1 852 551 A1 discloses a dewatering apparatus for dewatering a paper, tissue or other fibrous web in a machine for making or finishing the same.
  • the fibrous web is guided lying between two bands on a blow roll, which directs blown air in the wrap to the fibrous web.
  • the document DE 103 03 959 A1 describes a displacement dewatering press for dewatering a fibrous web.
  • the fibrous web will be there also guided lying between two bands on a blower roll, which directs blown air in the wrap to the fibrous web.
  • the dewatering takes place with simultaneous application of gas pressure and mechanical pressure to displace the water in the fibrous web.
  • the fibrous web in the forming zone is dewatered through a forming wire by means of applied centrifugal forces to a solids content of about 12%, whereupon the fibrous web is further dehydrated by vacuum to a solids content of about 23% and mechanically from a solids content of about 23% to about 40%.
  • the fibrous web is highly compressed, which adversely affects their thickness, volume and water absorbency.
  • a dry content limit of 23% more or less represents the maximum dry content value in the dry content vacuum curve that can be achieved by dewatering a tissue web on a wet felt.
  • the provision of a larger vacuum capacity is not energy efficient.
  • the invention has for its object to provide an improved device of the type mentioned above, with the lowest possible energy consumption while avoiding unwanted excessive compression of the fibrous web reach a higher dry content of the fibrous web immediately after the belt press and thus in particular also for the production of a voluminous Tissuebahn can be used.
  • the press belt of the belt press has a thickness ⁇ 4 mm, in particular ⁇ 2.8 mm, and preferably ⁇ 1.9 mm.
  • the fluid loading means of the device comprise a blowing device, which is arranged and designed so that the fluid, starting from the curved surface of the counter element of the belt press flows towards the press belt of the belt press.
  • the fluid thus flows in the direction of the force acting on the fibrous web due to the curved surface of the counter-element centrifugal force. This not only results in a reduction in the energy requirement required for fluid application, but also higher web speeds are possible, since unlike a conventional vacuum on the side of the counter element not the first centrifugal force must be compensated to achieve a corresponding dewatering effect.
  • the fluid flow according to the invention acts in the direction of the force acting on the fibrous web centrifugal force and consequently the dewatering of the fibrous web in the press nip of the belt press is also supported by the centrifugal force, can be achieved at low energy consumption correspondingly higher dry contents of the fibrous web immediately after the belt press, which is particularly advantageous if the fibrous web is subsequently to be fed to a downstream of the belt press drying zone.
  • the blowing device may in particular comprise a blow box assigned to the counter element of the belt press.
  • the fibrous web is guided lying between the carrier tape and the press belt lying through the press nip of the belt press.
  • the fibrous web guided together with the carrier belt through the press nip of the belt press contacts the press belt and the carrier belt the counter element of the belt press. In the present case, therefore, only the carrier tape with the fibrous web is passed through the press nip of the belt press.
  • the fluid acting on at least a portion of the press nips of the belt press advantageously contains hot, moist air and / or steam.
  • the device is designed to form a structured fibrous web and provided as a carrier tape, a structured band.
  • a corresponding device is particularly suitable for producing a voluminous tissue web.
  • the fibrous web is preferably passed together with the carrier tape from a forming zone of the device to the belt press and through it.
  • the device may in particular comprise a forming zone in which the fibrous web is formed on the preferably structured carrier tape.
  • the belt press is also preferably arranged downstream of a drying zone, which is fed to the fibrous web together with the carrier tape.
  • a drying zone expediently has a drying cylinder, in particular Yankee cylinder, and preferably a hood associated with the drying cylinder.
  • the drying cylinder for forming a further pressing zone associated with a counter-element which advantageously comprises a shoe pressing element, in particular shoe press roll, a counter-element with associated suction device, in particular suction roll, or a conventional press roll.
  • the fibrous web is transferred in the region of the further press zone of the carrier tape to the drying cylinder and continued on this.
  • the press belt of the belt press is designed for the highest possible tensile stress and preferably for a tensile stress ⁇ 30 kN / m.
  • a tensile stress in the range from about 10 kN / m to about 30 kN / m acts on the press belt of the belt press.
  • the surface of the press belt of the belt press advantageously has a fiber structure with fibers having a fineness ⁇ 44 dtex, in particular ⁇ 17 dtex and preferably ⁇ 11 dtex.
  • the permeable press belt of the belt press preferably has a permeability, in particular air permeability, of more than 0.1016 m 3 / (m 2 * s) (20 cfm), in particular more than 0.3048 m 3 / (m 2 * s) (60 cfm) and preferably more than 0.508 m 3 / (m 2 * s) (100 cfm).
  • the press belt of the belt press has a thickness ⁇ 4 mm, in particular ⁇ 2.8 mm, and preferably ⁇ 1.9 mm.
  • the radius of curvature of the curved surface of the counter element of the counter roll of the belt press is advantageously ⁇ 0.6 m and is preferably in the range of 0.35 m. If, for example, a blower roll is provided as the counter element of the belt press, its diameter is correspondingly advantageously ⁇ 1.2 m and is preferably in the range of 0.7 m. With a correspondingly small radius of curvature or diameter higher centrifugal forces are achieved, with a correspondingly higher drainage is achieved.
  • the device according to the invention is thus particularly suitable for producing a structured, voluminous tissue web, wherein the fibrous web produced can in particular have more than 70% non-pressed fibers and a thickness which is in particular twice or more than twice as large and correspondingly a higher volume and a corresponding one has higher water absorbency than the aforementioned known devices.
  • the device according to the invention can in particular also be operated at higher speeds.
  • the investment and energy costs are lower than in the known devices such as TAD (Through Air Drying) machines or crescent formers with a shoe press.
  • the belt press according to the invention can be arranged downstream of a drying zone with a drying cylinder, in particular a Yankee cylinder.
  • a structured fibrous web can be dewatered using the belt press using a very low pressing pressure of, for example, about 0.85 bar and with a very long press nip of, for example, 0.9 m, which is about 15 times longer than in a conventional press, for example a press nip with a length of 60 mm and is operated at, for example, 35 bar.
  • a dry content in the range of 12 to 30% and more can be achieved.
  • the fibrous web of the drying zone is supplied with a dry content ⁇ 30%, so that the fibrous web can be further dried in this one drying cylinder, in particular Yankee cylinder with associated drying hood, comprehensive drying zone.
  • the device according to the invention can be obtained in a simple manner by a corresponding conversion, for example, of a conventional paper machine with a shoe press.
  • hot, dry air, steam or moist, hot air can be used as the fluid.
  • the fluid can serve for heating the fibrous web and / or for receiving water from the fibrous web.
  • the fluid may be at least partially removed from the hood exhaust air of the hood associated with the drying cylinder of the drying zone, whereby the energy consumption is further reduced accordingly.
  • the fibrous web is preferably formed on the structured carrier strip, with which the fibrous web is preferably transferred to the belt press and through it into the downstream of the belt press drying zone.
  • the press formed with the drying cylinder of the drying zone only the bumps of the structured strip are pressed, leaving 70 to 80% of the fibers of the fibrous web completely unpressed, resulting in an overall voluminous fibrous web of greater thickness and higher specific volume.
  • the fibrous web can also be formed, for example, in a twin-wire former or another type of former.
  • the formed fibrous web can also be transferred by means of a pick-up shoe or the like to the structured carrier tape.
  • the high tensile tension permeable press belt of the belt press may be a high tension belt, such as a reinforced felt reinforced seam or an endless knit fiber reinforced fiber (Felted Belt) endlessly knit fabric.
  • a high tension belt such as a reinforced felt reinforced seam or an endless knit fiber reinforced fiber (Felted Belt) endlessly knit fabric.
  • the press belt should have even at higher temperatures only limited elongation, especially since the fluid is hot and in the paper machine in question usually only limited space is available.
  • the reinforced structure of the press belt may have a woven or a non-woven structure, depending on the required conditions of tension and temperature.
  • the material used can also contain components of a biko type (components with bico character).
  • Biko fibers bis-component fibers themselves are known in the art. It is advantageous to use such biko fibers and / or yarns for the production of the press belt both for the support structure and for the design of the at least paper-contacting surface of the press belt.
  • Biko fibers or yarns comprise two material components. The first material component forms the core of the fibers or yarns and the second material component encloses or encases the first material component.
  • a band structure of the press belt without fibers is also conceivable, which also facilitates conditioning and avoids rapid contamination of the structure.
  • the surface structure, in particular the contact side of the press belt for example, during casting of the tape and / or by melting of Plastics or other materials and / or by material-removing processes, for example, be produced by laser or water jet technology.
  • the advantage here lies in the manufacturability of an almost arbitrarily configurable surface structure.
  • the permeability can be generated, for example, during casting of the strip and / or by material-removing processes, for example by laser or water jet technology.
  • the pressing pressure p generated in the press nip of the belt press results from the quotient of the tension T and the radius of curvature of the counter element of the belt press or the radius R of a blowing roller provided as a counter element. For example, at a tensile stress of 30 kN / m and a diameter of a blow roll of 0.7 m, a pressure of 0.85 bar acting on the sandwich of fibrous web and carrier tape results.
  • the dewatering in the belt press thus takes place starting from the curved surface of the counter element to the press belt through first the porous carrier belt and then through the fibrous web.
  • the particular structured permeable carrier tape runs approximately dry on the side of the counter element through the press nip the Belt press, which results in a much lower rewet compared to a felt on the side of the mating element.
  • the fibrous web remains on the structured carrier belt and not on the felted press belt, since the fibers of the fibrous web lie in the depressions of the structured carrier belt.
  • the achievable with such a belt press dry content is in particular at least 7% higher than without belt press and with a carrier tape with a normal felt configuration and 12% higher than without belt press and with a carrier tape with the textured tape configuration.
  • the press nip of the belt press may in particular have a length ⁇ 700 mm.
  • the achievable dry content is further increased.
  • the drying zone In the drying zone, only the bumps of the carrier tape are pressed.
  • the press formed with the drying cylinder serves only for the further transport of the fibrous web and not the increase of the dry content.
  • a dry content of at least 30% should be achieved at the outlet of the belt press, which corresponds to the dry content immediately after the press formed with the drying cylinder of the drying zone.
  • the fibrous web can be further dried by means of the drying cylinder and the dryer hood associated therewith without the production of dents and without problems in terms of runability or machinability.
  • FIGURE shows a schematic representation of an exemplary embodiment of a device according to the invention for dewatering a fibrous web.
  • FIG. 1 shows a device 10 for dewatering a fibrous web 12, which can be used in particular as a machine for producing a voluminous tissue web.
  • the apparatus 10 or machine comprises a belt press 14 which comprises a press nip 16 elongated in the web running direction L, which is formed between a permeable press belt 18 and a curved surface of a counter element 20, which is at least partially wrapped by the press belt 18.
  • the fibrous web 12 is guided together with a permeable carrier tape 22 through the press nip 16 of the belt press 14.
  • means are provided to pressurize at least a portion of the press nip 16 of the belt press 14 with a fluid so that it flows through the carrier belt 22 and the fibrous web 12 therethrough.
  • the fluid loading means comprise a blowing device, which is arranged and designed so that the fluid flows from the curved surface of the counter-element 20 of the belt press 14 to the press belt 18 of the belt press 14. On the side of the counter element 20 of the belt press 14 thus results in a blowing zone 24, which extends along at least a portion of the press nips 16 of the belt press 14.
  • the blowing device may, for example, comprise a blow box assigned to the counter element of the belt press 14.
  • the counter element 20 of the belt press 14 comprises, for example, a blower roll.
  • the fibrous web 12 is guided lying between the carrier tape 22 and the press belt 18 lying through the press nip 16 of the belt press 14.
  • the guided together with the carrier tape 22 through the press nip 16 of the belt press 14 fibrous web 12, the press belt 18 and the carrier tape 22, the counter-element 20 of the belt press 14th
  • the at least a portion of the press nips 16 of the belt press 14 acting fluid may in particular contain hot, humid air and / or steam.
  • the device 10 is designed in particular to form a structured fibrous web 12.
  • a structured band is provided as a carrier tape 22.
  • the fibrous web 12 is guided together with the carrier tape 22 from a forming zone 26 to the belt press 14 and through this.
  • a forming zone 26 is provided in the present case, in which the fibrous web 12 is formed on the structured permeable carrier tape 22.
  • the carrier tape 22 is guided, together with a forming belt 28, to form a feed gap 32, which is acted upon by pulp suspension from a headbox 30, around a forming element 34, here a forming roll.
  • the forming belt 28 is again separated from the fibrous web 12 and the carrier tape 22 and the fibrous web 12 is continued together with the carrier tape.
  • the belt press 14 is followed by a drying zone 36, which is fed to the fibrous web 12 together with the carrier tape 22.
  • the drying zone 36 comprises a drying cylinder 38, in the present case, for example, a Yankee cylinder, and a hood 40 associated with the drying cylinder 38.
  • the hood guides the fibrous web guided around the drying cylinder 38 with hot fluid, in particular hot air.
  • the drying cylinder 38 is associated with a counter element 44, which is in the present case, for example, a shoe press roll to form an at least substantially only the transfer of the fibrous web 12 from the carrier tape 22 to the drying cylinder 38 serving further press zone 42.
  • a counter element 44 which is in the present case, for example, a shoe press roll to form an at least substantially only the transfer of the fibrous web 12 from the carrier tape 22 to the drying cylinder 38 serving further press zone 42.
  • the fibrous web 12 is transferred in the region of the further press zone 42 from the carrier tape 22 to the drying cylinder 38 and continued thereon.
  • this drying cylinder 38 with associated hood 40 comprising drying zone 36 the fibrous web 12 is then further dried.
  • the press belt of the belt press 14 can be designed in particular for a tensile stress ⁇ 30 kN / m.
  • a tensile stress in the range from about 10 kN / m to about 30 kN / m can act on the press belt 18 in particular.
  • the radius of curvature of the curved surface of the counter-element 20 of the belt press 14 may in particular be ⁇ 0.6 m and in particular be in the range of 0.35 m.
  • the fibrous web 12 can have, for example, a dry content (TG) of 10% immediately before the belt press 14 and immediately after the further press zone 42 serving merely to transfer the fibrous web 12 onto the drying cylinder 38, in particular having a dry content ⁇ 30% ,
  • TG dry content
  • the transferred to the drying cylinder 38 fibrous web 12 may in particular contain between about 70 to about 80% unpressed fibers.

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Claims (19)

  1. Dispositif (10) d'égouttage d'une nappe de matière fibreuse (12), en particulier d'une nappe de papier, de carton ou de papier-tissu, comprenant une presse à bande (14) qui comprend un pinçage (16) s'étendant dans la direction d'avance de la bande (L), qui est formé entre une bande de pressage perméable (18) et une surface courbe d'un élément conjugué (20) enveloppée au moins en partie par la bande de pressage (18), la nappe de matière fibreuse (12) étant guidée conjointement avec une bande de support perméable (22) à travers le pinçage (16) de la presse à bande (14) et des moyens étant prévus pour solliciter au moins une région partielle du pinçage (16) de la presse à bande (14) avec un fluide de telle sorte que celui-ci s'écoule à travers la bande de support (22) et la nappe de matière fibreuse (12),
    les moyens de sollicitation de fluide comprenant un dispositif de soufflage qui est disposé et réalisé de telle sorte que le fluide sortant de la surface courbe de l'élément conjugué (20) de la presse à bande (14) s'écoule jusqu'à la bande de pressage (18) de la presse à bande (14),
    caractérisé en ce que
    la bande de pressage (18) de la presse à bande (14) présente une épaisseur ≤ 4 mm, en particulier ≤ 2,8 mm et de préférence ≤ 1,9 mm.
  2. Dispositif selon la revendication 1, caractérisé en ce que le dispositif de soufflage comprend un caisson de soufflage associé à l'élément conjugué (20) de la presse à bande (14).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que l'élément conjugué (20) de la presse à bande (14) comprend un rouleau de soufflage.
  4. Dispositif selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que la nappe de matière fibreuse (12) située entre la bande de support (22) et la bande de pressage (18) est guidée à travers le pinçage (16) de la presse à bande (14).
  5. Dispositif selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que la nappe de matière fibreuse (12) guidée à travers le pinçage (16) de la presse à bande (14) conjointement avec la bande de support (22) est en contact avec la bande de pressage (18) et la bande de support (22) est en contact avec l'élément conjugué (20) de la presse à bande (14).
  6. Dispositif selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que le fluide sollicitant l'au moins une région partielle du pinçage (16) de la presse à bande (14) contient de l'air chaud et humide et/ou de la vapeur.
  7. Dispositif selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif (10) est réalisé pour former une nappe de matière fibreuse structurée (12) et une bande structurée est prévue en tant que bande de support (22).
  8. Dispositif selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que la nappe de matière fibreuse (12), conjointement avec la bande de support (22), est guidée depuis une zone de formage (26) jusqu'à la bande de pressage (14) et à travers celle-ci.
  9. Dispositif selon au moins l'une quelconque des revendications précédentes, caractérisé en ce qu'il est prévu une zone de formage (26) dans laquelle la nappe de matière fibreuse (12) est formée sur la bande de support (22) de préférence structurée.
  10. Dispositif selon au moins l'une quelconque des revendications précédentes, caractérisé en ce qu'une zone de séchage (36) à laquelle est acheminée la nappe de matière fibreuse (12) conjointement avec la bande de support (22), est montée en aval de la presse à bande (14).
  11. Dispositif selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que la zone de séchage (36) comprend un cylindre de séchage (38), en particulier un cylindre Yankee, et de préférence un capot (40) associé au cylindre de séchage.
  12. Dispositif selon la revendication 11, caractérisé en ce qu'un élément conjugué (44) est associé au cylindre de séchage (38) pour former une zone de pressage supplémentaire (42).
  13. Dispositif selon la revendication 12, caractérisé en ce qu'un élément de pressage à sabot, en particulier un rouleau de pressage à sabot, un élément conjugué avec un dispositif d'aspiration associé, en particulier un rouleau d'aspiration, ou un rouleau de pressage, est associé au cylindre de séchage (38) pour former la zone de pressage supplémentaire (42).
  14. Dispositif selon la revendication 13, caractérisé en ce que la nappe de matière fibreuse (12) est transférée dans la région de la zone de pressage supplémentaire (42) de la bande de support (22) au cylindre de séchage (38) et est transportée sur celui-ci.
  15. Dispositif selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que la bande de pressage (18) de la presse à bande (14) est conçue pour une tension de traction ≥ 30 kN/m.
  16. Dispositif selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que sur la bande de pressage (18) de la presse à bande (14) s'exerce une tension de traction de l'ordre d'environ 10 kN/m à environ 30 kN/m.
  17. Dispositif selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que la surface de la bande de pressage (18) de la presse à bande (14) possède une structure fibreuse avec des fibres qui présentent une finesse ≤ 44 dtex, notamment ≤ 17 dtex et de préférence ≤ 11 dtex.
  18. Dispositif selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que la bande de pressage perméable (18) de la presse à bande (14) présente une perméabilité, en particulier une perméabilité à l'air, supérieure à 0,1016 m3/(m2*s) (20 cfm), en particulier supérieure à 0,3048 m3/(m2*s) (60 cfm) et de préférence supérieure à 0,508 m3/(m2*s) (100 cfm).
  19. Dispositif selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que le rayon de courbure de la surface courbe de l'élément conjugué (20) de la presse à bande (14) est ≤ 0,6 m et vaut environ 0,35 m.
EP15777659.2A 2014-10-29 2015-10-05 Dispositif d'égouttage d'une bande de matière fibreuse Active EP3212843B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014222010 2014-10-29
PCT/EP2015/072922 WO2016066375A1 (fr) 2014-10-29 2015-10-05 Dispositif d'égouttage d'une bande de matière fibreuse

Publications (2)

Publication Number Publication Date
EP3212843A1 EP3212843A1 (fr) 2017-09-06
EP3212843B1 true EP3212843B1 (fr) 2018-07-18

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EP (1) EP3212843B1 (fr)
CN (1) CN107148500B (fr)
WO (1) WO2016066375A1 (fr)

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CN107503215B (zh) * 2017-09-25 2019-02-15 绥阳县双龙纸业有限公司 一种自动化造纸系统
DE102018107068A1 (de) 2018-03-26 2019-09-26 Voith Patent Gmbh Vorrichtung und Verfahren zur Trocknung einer Faserstoffbahn unter Verwendung einer Dampfrückgewinnung
DE102021117643A1 (de) 2021-07-08 2023-01-12 Voith Patent Gmbh Verfahren und Maschine zur Herstellung einer Faserstoffbahn
DE102021117647A1 (de) 2021-07-08 2023-01-12 Voith Patent Gmbh Verfahren und Maschine zur Herstellung einer Faserstoffbahn
AT526668B1 (de) * 2023-08-10 2024-06-15 Andritz Ag Maschine und verfahren zur herstellung einer faserstoffbahn

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US7297233B2 (en) * 2004-01-30 2007-11-20 Voith Paper Patent Gmbh Dewatering apparatus in a paper machine
DE102006021328A1 (de) * 2006-05-05 2007-11-08 Voith Patent Gmbh Entwässerungsvorrichtung
DE102008054990A1 (de) * 2008-12-19 2010-06-24 Voith Patent Gmbh Vorrichtung und Verfahren zur Herstellung einer Materialbahn
DE102010044079A1 (de) * 2010-11-17 2012-05-24 Voith Patent Gmbh Vorrichtung und Verfahren zur Herstellung einer Materialbahn
DE102011007568A1 (de) * 2011-04-18 2012-10-18 Voith Patent Gmbh Vorrichtung und Verfahren zur Herstellung einer Materialbahn
BR112014013929B1 (pt) * 2011-12-08 2022-01-04 Voith Patent Gmbh Cinta de prensa e máquina para fabricação de folha contínua de material fibroso especialmente papel tissue
EP3017104B1 (fr) * 2013-07-04 2020-03-04 Voith Patent GmbH Procédé de conversion et d'utilisation d'un dispositif de fabrication de tissu non-tissé
WO2015000690A1 (fr) * 2013-07-04 2015-01-08 Voith Patent Gmbh Procédé et dispositif compact de fabrication de non-tissé

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EP3212843A1 (fr) 2017-09-06
WO2016066375A1 (fr) 2016-05-06
CN107148500A (zh) 2017-09-08
CN107148500B (zh) 2020-02-21

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