EP3842591B1 - Dispositif d'application d'un milieu d'application - Google Patents

Dispositif d'application d'un milieu d'application

Info

Publication number
EP3842591B1
EP3842591B1 EP19000589.2A EP19000589A EP3842591B1 EP 3842591 B1 EP3842591 B1 EP 3842591B1 EP 19000589 A EP19000589 A EP 19000589A EP 3842591 B1 EP3842591 B1 EP 3842591B1
Authority
EP
European Patent Office
Prior art keywords
press
press nip
curtain
roll
application
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP19000589.2A
Other languages
German (de)
English (en)
Other versions
EP3842591A1 (fr
Inventor
Eduard Davydenko
Andreas Pesch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Andritz Kuesters GmbH
Original Assignee
Andritz Kuesters 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 Andritz Kuesters GmbH filed Critical Andritz Kuesters GmbH
Priority to EP19000589.2A priority Critical patent/EP3842591B1/fr
Priority to US17/125,311 priority patent/US11718961B2/en
Priority to CN202011501229.5A priority patent/CN113089369B/zh
Publication of EP3842591A1 publication Critical patent/EP3842591A1/fr
Application granted granted Critical
Publication of EP3842591B1 publication Critical patent/EP3842591B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/80—Paper comprising more than one coating
    • D21H19/82—Paper comprising more than one coating superposed
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/80—Paper comprising more than one coating
    • D21H19/84—Paper comprising more than one coating on both sides of the substrate
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
    • D21H23/56—Rolls
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/54—Starch
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/46—Pouring or allowing the fluid to flow in a continuous stream on to the surface, the entire stream being carried away by the paper
    • D21H23/48—Curtain coaters

Definitions

  • a coating medium particularly starch
  • the application of a coating medium has long been a standard procedure for increasing the resistance of the paper web to moisture, as well as its surface strength and overall strength.
  • the coating medium can be introduced directly into the fiber suspension or sprayed onto a wet web in the wire section of a paper machine. However, it is more efficient to apply the coating medium after the press section and a pre-drying section. Besides size presses or film presses, curtain applicators are also commonly used for applying the coating medium.
  • a generic device for coating a material web on one or both sides is known, in which the coating medium is applied to the surface of mutually rotating rollers by one or two curtain-type coating units. These rollers form a press gap or press nip between them, through which the material web is guided. The rotation of the rollers conveys the coating medium applied to their surface towards the material web and brings it into close contact with the web in the press nip. For this purpose, the material web, with the still-moist coating medium applied to it, can be guided through the press gap. At least one of the pressing elements of the press gap can also serve as a transfer element, onto whose surface the coating medium is applied and transported to the material web. This is intended to ensure a good bond between the material web and the coating medium.
  • the coating medium is dispensed onto the substrate in the form of a curtain of coating medium, which moves from the coating system to the substrate primarily due to gravity.
  • the shape of the curtain emerging from the dispensing nozzle is determined solely by the interplay between the surface tension of the coating medium and gravity.
  • the gap width of the dispensing nozzle can be adjusted between 0.2 and approximately 1.5 mm.
  • the material web in the area where the application medium of the application medium curtain impacts the substrate, can be supported by a counter element, for example, a counter roller or an endlessly circulating support belt.
  • a counter element for example, a counter roller or an endlessly circulating support belt.
  • the application medium is applied to the material web in a free web section, i.e., in a section of the material web's travel path where it is not supported by a counter element.
  • a disadvantage is that, with paper and cardboard machine widths of up to, for example, 8 m, the manufacturing effort for nozzle parts of the discharge nozzle in such dimensions with the required precision is very high, especially with large discharge widths, and involves considerable costs.
  • Well-known coating machines such as film presses, are used to precisely meter and transfer film onto paper.
  • the application of the coating material is achieved, as in coating, via nozzle or roller systems.
  • film press is commonly used generically, although other well-known solutions include the Speedsizer and the Metering Blade Size Press.
  • Film presses are known, for example, from DE 34 17 487 A1 and DE 41 31 131 C2
  • starch, glue suspension, or coating paint is applied to an application roller using a metering applicator and metered by means of a metering squeegee.
  • the coating of the paper or cardboard web takes place on both sides in a press gap between the application rollers.
  • the starch temperature is typically between 50°C and 80°C.
  • the typical solids content of the starch is between 8% and 15%, with an application weight of 0.5 to 6 g/ m2 per side. In some cases, it is also possible to apply starch with a solids content of up to 15% to the paper or board web using a film press of this type.
  • the solids content consists of the starch and pigment components and is typically between 15% and 40%.
  • the line forces between the application rollers are typically between 40 and 70 kN/m.
  • the starch When coating a paper web, the starch should be applied as evenly as possible.
  • the application rate must be as constant as possible across the entire working width.
  • the volume flow in the application zone is divided into two partial flows. One portion of the starch flows with the application roller to the metering blade and is used for coating the paper. The other portion flows back through the overflow gap, against the direction of travel of the application roller, into a collection tray for reprocessing.
  • the overflow gap between the rim of the application chamber and the application roller significantly influences the uniformity of the starch distribution across the working width.
  • presses with a perforated sealing blade were developed.
  • the perforated scraper is arranged as a piercing or applied scraper on the application roller.
  • These film presses are made, for example, of EP 2 646 169 B1 and EP 3 023 163 A1 This is known.
  • the excess starch flows evenly across the working width through holes or slots in the scraper into a collection tray. While this solution can reduce the amount of starch overflow by 10% to 20%, a continuous flow of starch from the application zone is still necessary to prevent disruptive air pockets in the application zone. Therefore, the economic efficiency is not particularly good here either.
  • the application chamber in the film presses was replaced by spray nozzles.
  • the starch is pre-metered via free-jet nozzles. It is sprayed as a thin film onto the application roller. Subsequent leveling can be done using a conventional metering blade, as is the case, for example, in... EP 0 881 330 B1 described. Film presses with free-jet nozzles without a metering blade are also known and described, for example, in EP 0 670 004 B1 and DE 20 2017 100 655 U1 .
  • the free-jet nozzles allow for a very thin film application onto the coating roller. This reduces the amount of starch circulating to a minimum.
  • Film presses with spray nozzles have the significant disadvantage that the maximum solids content of the starch is limited to approximately 14%. Particularly with high solids content, starch particles adhere to the free-jet nozzles. This leads to streaking and a resulting uneven distribution of the starch across the web width. In the worst case, this can cause blockages in the nozzles and interruptions in production.
  • Another disadvantage is the formation of a mist of starch particles in the coating zone. These small starch particles adhere to the entire surface of the film press. This increases cleaning requirements and the risk of deposits affecting the paper web. Additional technical effort is required to extract the mist from the coating zone, which in turn creates further problems with fluttering. Paper web causes problems. To stabilize the web, an airflow can be introduced into the application zone, as for example in EP 2 811 069 B1 described.
  • a contract work for multi-shift work is also known, as for example in DE 10 2006 057 870 A1 described.
  • the starch is applied in several layers to the application rollers using curtain applicators and then transferred together in a nip to the material web.
  • the term "hardness" of a roller refers to the hardness of the outer layer or surface of the roller.
  • the P&J hardness test is a common measure for rollers. It can be determined using commercially available devices, such as the P&J Zwick 3108 hardness tester, which meets the requirements of ASTM D531-89.
  • the object of the invention is therefore to create a device that allows for a more economically efficient application of an application medium, in particular starch, to a moving web of material when the web of material is guided through a treatment press gap after the application of the starch, as described in the preamble of claim 1.
  • a curtain applicator is used as the applicator, with which very high solids contents of the applicator medium, in particular starch, of up to 40%, preferably 15% to 35%, can be applied in one or more layers.
  • the applicator medium is transferred indirectly to the material web via a heated transfer element.
  • the press gap includes at least one roller with adjustable crowning, in particular a bending adjustment roller.
  • Line forces in the press gap between 20 kN/m and 200 kN/m, preferably 80 kN/m and 120 kN/m, can then be varied across the entire press force range, since precise thickness cross-profile control is possible regardless of the line load level.
  • at least one coating roller is designed as a heated roller.
  • the temperature of the heated roller is preferably in the range of 50°C to 150°C, preferably in the range of 90°C to 120°C.
  • the press gap can be formed by two coating rollers, both of which can be heated.
  • the coating rollers are preferably hard rollers with a hardness of less than 30 P&J (Pusey & Jones).
  • Increased efficiency of the device results in particular from a significantly reduced energy consumption for the evaporation of excess water at high application medium concentrations.
  • the inventors deserve credit for recognizing that lower accuracy in the nozzle gap width of a curtain coating unit, particularly a curtain coater, can be compensated for across the working width by a sump that forms at or immediately in front of the press gap due to the process, especially when a sensitive adjustment of the linear force profile perpendicular to the web or along the press gap is possible. If parallelism of the roller contact surfaces is ensured perpendicular to the web, for example by means of a bending adjustment roller as the coating roller, a compensating sump forms in the infeed area of the press gap.
  • the accuracy of the discharge gap of the dispensing nozzle for the curtain coating system is preferably in the range of ⁇ 2.5 ⁇ m to ⁇ 10 ⁇ m, particularly preferably ⁇ 4 ⁇ m to ⁇ 8 ⁇ m. This applies in particular to typical gap widths in the range of 0.2 to 1.5 mm.
  • the invention relates to a device for the indirect application of an application medium 2.1, 2.2, in particular starch, to at least one side of a moving web of material 13, in particular a paper or cardboard web, by means of at least one curtain application unit 1.1, 1.2 with a dispensing nozzle 14.1, 14.2.
  • the at least one curtain application unit 1.1, 1.2 is followed by a press gap N for generating hydraulic pressure as the web of material 13 passes through the press gap N, which allows the moist application medium 2.1, 2.2 to penetrate the web of material 13.
  • the press gap N is preferably a hard nip formed by two hard rollers, the application rollers 7, 8.
  • the at least one curtain applicator 1.1, 1.2 is designed to dispense an applicator medium 2.1, 2.2 with a solids content in at least one layer of between 10% and 40%.
  • the at least one press gap N is equipped with at least one heated applicator roller 7, and the heated applicator roller 7 and/or a counter element is designed as an applicator roller 8 with adjustable crown 16.
  • the curtain applicator 1.1, 1.2 has a dispensing nozzle 14.1, 14.2 with a discharge gap 15 which has an accuracy in the range of ⁇ 2.5 ⁇ m to ⁇ 10 ⁇ m in gap length at a gap width of preferably 0.2 to 1.5 mm.
  • each curtain application unit 1.1, 1.2 relative to the press gap N is adjustable for an arrangement for the indirect application of the application medium 2.1, 2.2 with selectable residence time of a heat transfer from the at least one heated application roller 7 to the application medium 2.1, 2.2 and/or the material web 13, as will be explained below.
  • the coating roller 8 with adjustable crown 16 is preferably a bending compensation roller.
  • both coating rollers 7, 8 of the press gap N are designed as heated rollers.
  • the coating rollers 7, 8 of the press gap N preferably have coatings with less than 30 P&J.
  • the coating rollers 7, 8 of the press gap N are designed for a roller surface temperature of 50°C to 150°C, particularly preferably 100°C to 120°C.
  • the line load can be selected in the range of 20 kN/m to 200 kN/m.
  • An angle ⁇ for the point of impact of the curtain of the coating medium 2.1, 2.2 on a coating roller 7, 8 of the press gap N is preferably between -90° and +45°.
  • the respective curtain coating unit 1.1, 1.2 is designed to control the solids content of the coating medium 2.1, 2.2 in at least one layer from 25% to 55%.
  • the application weight of the coating medium per side can range from 0.5 to 6 g/ m2 , and the temperature of the coating medium, particularly the starch, can be between 55° and 99°C before application to a coating roller 7, 8. Furthermore, the viscosity of the coating medium can be significantly higher than in film presses. namely at 20 to 500 mPa s (Brookfield 100 rpm).
  • the specific volumetric flow rate from the nozzle of the curtain applicator 1.1, 1.2 is in the range of 4 l/(min xm) to 30 l/(min xm).
  • a film of the application medium 2.1, 2.2, in particular starch is preferably applied to the respective application roller 7, 8 in the range of 5 ml/ m2 to 100 ml/ m2 .
  • guide rollers 12 can also be provided, which determine a treatment path of the running material web 13 between curtain application unit 1.1, 1.2 and press gap N.
  • the application medium 2.1 in particular starch, is first applied to a rotating application roller 7 by a curtain application unit 1.1.
  • a further application medium (film) 2.2 for example a single layer, is applied to a second rotating application roller 8 by a second curtain application unit 1.2.
  • the dwell time of the application medium 2.1, 2.2 on the respective application roller 7, 8 until it enters the press gap N can be selected individually for each side and can therefore be different.
  • the position of the respective curtain application unit 1.1, 1.2 relative to the associated application roller 7, 8 can be changed in the direction of arrow X, for example by horizontal and, if necessary, additionally vertical movement.
  • a specific outer circumference of the roller, corresponding to the residence time, can be set between the impact of the curtain and its entry into the press gap N, thereby increasing or decreasing the residence time as indicated by the angle ⁇ . If the coating roller 7, 8 is heated, the residence time can be used to influence the temperature increase of the coating medium 2.1, 2.2 before it enters the press gap N. The coating medium 2.1, 2.2 can then be thermally pretreated in this way before being pressed into the material web 1 on both sides in the press gap N between the coating rollers 7, 8.
  • each curtain application unit 1.1, 1.2 can be assigned a starter tray 4.1, 4.2 with a quick-start device 5.1, 5.2.
  • the diameter of the application rollers 7, 8 can, for example, be 400 to 1800 mm. Heated transfer belts can also be used instead of heated application rollers 7, 8.
  • Each of the two curtain coating systems 1.1 and 1.2 is provided with a multi-layered coating unit, which, for example, is configured as a two-layer unit.
  • the two curtain coating systems 1.1 and 1.2 can also have different multi-layer configurations.
  • an inner layer can be used to introduce starch for penetration into the material web.
  • the outer (second) layer can, for example, be a pigment coating.
  • the solids content of the starch in the first layer can be, for example, 6% to 50%, preferably 15% to 35%.
  • the solids content of the coating in the second layer can be in the range of 20% to 68%.
  • the two-layer curtain coating can consist of two starch layers.
  • the first layer can have a lower starch concentration to achieve higher penetration and thus high splitting strength.
  • a second layer with a higher starch concentration increases the modulus of elasticity of the outer, near-surface layers and thus achieves higher flexural stiffness.

Landscapes

  • Paper (AREA)

Claims (12)

  1. Dispositif pour l'application indirecte d'un milieu d'application (2.1, 2.2), en particulier de l'amidon, sur au moins un côté d'une bande de matériau en défilement (13), en particulier une bande de papier ou de carton, au moyen d'au moins un applicateur en rideau (1.1, 1.2) avec une buse de décharge (14.1, 14.2) et au moins une fente de presse (N) faisant suite à l'applicateur en rideau (1.1, 1.2) pour former une pression hydraulique lorsque la bande de matériau (13) passe à travers une fente de presse (N) formé par deux rouleaux presseurs rotatifs, qui permet au milieu d'application (2.1, 2.2) pour pénétrer dans la bande de matériau (13), caractérisé en ce que l'applicateur en rideau (1.1, 1.2) a une buse de décharge (14.1, 14.2) avec une fente de sortie avec une précision de tolérance de fabrication dans la plage de ± 2,5 µm à ± 10 µm en longueur de fente à une largeur de fente de 0,2 à 2,0 mm, afin d'augmenter la pénétration du milieu d'application (2.1, 2.2) dans la bande de matériau (13), au moins une fente de presse (N) est équipée d'au moins un rouleau d'application chauffé (7, 8) comme rouleau presseur, et au moins l'un des deux rouleaux presseurs est conçu avec une couronne réglable (16) pour régler une charge linéaire dans une plage de 20 à 200 kN/m, dans lequel un carter de compensation est prévu dans la région d'alimentation de la fente de presse (N), qui est assurée transversalement à la bande de matériau (13) au moyen du rouleau presseur avec une couronne réglable (16) comme le rouleau d'application (8) et des forces linéaires dans la fente de presse (N) lorsque les surfaces de contact de rouleau des deux rouleaux presseurs sont parallèles.
  2. Dispositif selon la revendication 1, caractérisé en ce que la fente de presse (N) est conçue comme une ligne de contact dure.
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que la position dans l'espace de l'applicateur en rideau (1.1, 1.2) respectif par rapport à la fente de presse (N) est réglable pour un agencement pour l'application indirecte du milieu d'application (2.1, 2.2) avec un temps de séjour sélectionnable pour le transfert de chaleur depuis l'au moins un rouleau d'application chauffé (7, 8) vers le milieu d'application (2.1, 2.2).
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que l'applicateur en rideau (1.1, 1.2) est conçu pour former un rideau multicouche.
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que des rouleaux de guidage sont prévus, qui déterminent un trajet de traitement de la bande de matériau en défilement (13) entre l'applicateur en rideau (1.1, 1.2) et la fente de presse (N).
  6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que le rouleau presseur à couronne réglable (16) est un rouleau de compensation de pliage.
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que les deux rouleaux presseurs de la fente de presse (N) sont conçus comme des rouleaux d'application (7, 8) chauffés.
  8. Dispositif selon l'une des revendications 1 à 7, caractérisé en ce que les rouleaux d'application (7, 8) de la fente de presse (N) présentent des revêtements d'une dureté inférieure à 30 P&J.
  9. Dispositif selon l'une des revendications 1 à 8, caractérisé en ce que les rouleaux presseurs de la fente de presse (N) sont conçus comme des rouleaux d'application (7, 8) pour une température de surface de rouleau de 50 °C à 150 °C.
  10. Dispositif selon l'une des revendications 1 à 9, caractérisé en ce que la fente de presse (N) est conçue pour des forces linéaires dans la plage de 20 kN/m à 200 kN/m.
  11. Dispositif selon l'une quelconque des revendications 1 à 10, caractérisé en ce qu'un angle α pour un point d'impact du rideau du milieu d'application (2.1, 2.2) sur un rouleau d'application (7, 8) de la fente de presse (N) se trouve entre - 90° et +45°.
  12. Dispositif selon l'une des revendications 1 à 11, caractérisé en ce que l'applicateur en rideau (1.1, 1.2) est conçu pour commander la teneur en matières solides du milieu d'application (2.1, 2.2) dans au moins une couche de 25 % à 55 %.
EP19000589.2A 2019-12-23 2019-12-23 Dispositif d'application d'un milieu d'application Active EP3842591B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP19000589.2A EP3842591B1 (fr) 2019-12-23 2019-12-23 Dispositif d'application d'un milieu d'application
US17/125,311 US11718961B2 (en) 2019-12-23 2020-12-17 Device for applying a treatment substance
CN202011501229.5A CN113089369B (zh) 2019-12-23 2020-12-18 用于涂布处理物质的装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19000589.2A EP3842591B1 (fr) 2019-12-23 2019-12-23 Dispositif d'application d'un milieu d'application

Publications (2)

Publication Number Publication Date
EP3842591A1 EP3842591A1 (fr) 2021-06-30
EP3842591B1 true EP3842591B1 (fr) 2026-02-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19000589.2A Active EP3842591B1 (fr) 2019-12-23 2019-12-23 Dispositif d'application d'un milieu d'application

Country Status (3)

Country Link
US (1) US11718961B2 (fr)
EP (1) EP3842591B1 (fr)
CN (1) CN113089369B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022105518B4 (de) * 2022-03-09 2024-03-21 Voith Patent Gmbh Auftragsdüse, Auftragswerk und Verfahren
EP4245916A1 (fr) * 2022-03-14 2023-09-20 Valmet Technologies Oy Procédé de traitement d'une bande de fibres et système de traitement pour le traitement d'une bande de fibres
EP4283039A1 (fr) * 2022-05-24 2023-11-29 Andritz Küsters GmbH Dispositif de lissage et d'application d'un milieu d'application
PL4316671T3 (pl) * 2022-08-01 2026-04-27 Andritz Küsters Gmbh Mechanizm do nanoszenia kurtynowego, do nanoszenia czynników nanoszonych na co najmniej jeden walec nanoszący
DE102023129320A1 (de) * 2022-11-03 2024-05-08 Valmet Technologies Oy Behandlungssystem zur Behandlung einer Faserbahn
CN116575251B (zh) * 2023-05-18 2024-09-03 福建省闽清双棱纸业有限公司 一种防水复合牛皮纸生产加工系统

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3417487A1 (de) 1984-05-11 1985-11-21 J.M. Voith Gmbh, 7920 Heidenheim Vorrichtung zum auftragen einer fluessigkeit auf eine laufende bahn
DE4131131C2 (de) 1991-09-19 1994-07-21 Voith Gmbh J M Vorrichtung zum Auftragen von Streichfarbe auf eine Faserstoffbahn
CA2122075A1 (fr) * 1993-04-30 1994-10-31 Glen H. Bayer, Jr. Procede et dispositif de revetement
ATE152193T1 (de) 1993-09-14 1997-05-15 Voith Sulzer Papiermasch Gmbh Verfahren und einrichtung zum beschichten einer laufenden warenbahn
DE19606459A1 (de) * 1996-02-21 1997-08-28 Voith Sulzer Papiermasch Gmbh Verfahren und Vorrichtungen zum Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn
DE19722159A1 (de) 1997-05-27 1998-12-03 Voith Sulzer Papiermasch Gmbh Verfahren und Vorrichtung zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Auftragsmediums auf eine laufende Oberfläche
DE10012344A1 (de) 2000-03-14 2001-09-20 Voith Paper Patent Gmbh Vorhang-Auftragsverfahren
DE102006057870A1 (de) 2006-12-08 2008-06-12 Voith Patent Gmbh Mehrschichtauftrag
DE102008000283A1 (de) * 2008-02-12 2009-08-13 Voith Patent Gmbh Kombiniertes Auftrags- und Glättverfahren
DE102009012920A1 (de) * 2009-03-12 2010-09-16 Papiertechnische Stiftung Verfahren zum Auftragen eines Auftragsmediums auf bahnförmige Materialien und Vorrichtung zur Durchführung des Verfahrens
DE102010052649A1 (de) 2010-11-30 2012-05-31 Horst Sprenger Gmbh Vorrichtung zum Beschichten von Papier- oder Kartonbahnen
JP2013234400A (ja) * 2012-05-08 2013-11-21 Oji Holdings Corp 塗工紙の製造方法
EP2735648A1 (fr) 2012-11-22 2014-05-28 Valmet Technologies, Inc. Dispositif pour traiter un voile de fibres
FI126700B (fi) 2014-11-18 2017-04-13 Valmet Technologies Inc Patoterä
DE102014223910A1 (de) 2014-11-24 2016-05-25 Homag Holzbearbeitungssysteme Gmbh Werkstückzuführvorrichtung
EP3219849A1 (fr) 2016-03-15 2017-09-20 Valmet Technologies Oy Dispositif pour traiter des toiles de fibres
FI127948B (en) 2017-02-01 2019-05-31 Voith Patent Gmbh Method and device for starch application

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US20210189660A1 (en) 2021-06-24
CN113089369B (zh) 2023-10-24
EP3842591A1 (fr) 2021-06-30
US11718961B2 (en) 2023-08-08
CN113089369A (zh) 2021-07-09

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