EP3842591A1 - Dispositif d'application d'un milieu d'application - Google Patents

Dispositif d'application d'un milieu d'application Download PDF

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Publication number
EP3842591A1
EP3842591A1 EP19000589.2A EP19000589A EP3842591A1 EP 3842591 A1 EP3842591 A1 EP 3842591A1 EP 19000589 A EP19000589 A EP 19000589A EP 3842591 A1 EP3842591 A1 EP 3842591A1
Authority
EP
European Patent Office
Prior art keywords
application
press
press nip
rollers
roller
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.)
Pending
Application number
EP19000589.2A
Other languages
German (de)
English (en)
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/EP3842591A1/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
Pending legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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
    • 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

Definitions

  • the invention relates to a device for applying an application medium to at least one side of a moving material web according to the preamble of claim 1.
  • an application medium in particular starch
  • the use of an application medium has long been a standard method to increase the resistance of the material web to moisture as well as its surface strength and overall strength.
  • the application medium can be introduced directly into the pulp suspension or sprayed onto a wet web in the wire section of a paper machine.
  • the application medium is applied in a more efficient manner after the press section and a pre-dryer section.
  • curtain applicators in particular are also known for applying the application medium. There is a need in the industry because of the higher production speeds in providing more efficient machines for applying an application medium to a moving web of material.
  • the application medium is delivered to the substrate in the form of an application medium curtain, which essentially moves from the applicator to the substrate due to gravity.
  • the shape of the curtain emerging from the dispensing nozzle is only exposed to the interplay between the surface tension of the application medium and the force of gravity.
  • the gap width of the dispensing nozzle can be between 0.2 and approximately 1.5 mm.
  • the gap width of the dispensing nozzle can be adjusted over the entire working width. It is also known that the sensitive control or regulation of the application quantity with regard to the finished metering of the application medium by the curtain applicator, ie 1: 1 application, is important.
  • the material web can be supported by a counter element, for example a counter roller or an endlessly rotating support belt, in the area where the application medium of the application medium curtain strikes the substrate.
  • a counter element for example a counter roller or an endlessly rotating support belt
  • the application medium it is also possible for the application medium to be applied to the material web in a free web tension, i.e. in a section of the running path of the material web in which it is not supported by a counter-element.
  • Known commissioned works such as a film press, are also known and are used to pre-dose an exact film and transfer it to the paper.
  • the application and coating quantities are supplied via nozzle or roller application systems.
  • film press is usually used as a generic term, with known solutions in this respect also including the speedsizer and the metering blade size press.
  • Film presses are known from, for example DE 34 17 487 A1 and DE 41 31 131 C2 , in which the starch, glue suspension or coating color is applied to an application roller with the aid of a metering applicator and metered using a metering doctor blade.
  • the paper or cardboard web is coated on both sides in a press nip between the application rollers.
  • the temperature of the starch is usually 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 / m 2 per side.
  • a film press of this type it is also possible with a film press of this type to apply the starch with a solids content of up to 15% to the paper or cardboard web.
  • the solids content is made up of the starch content and the pigment content and is usually in the range between 15% and 40%.
  • the line forces between the applicator rollers are usually between 40 and 70 kN / m.
  • the starch When the paper web is coated, the starch should be applied as evenly as possible to the paper web.
  • the application quantity must be as constant as possible over the entire working width.
  • the volume flow in the application zone is divided into two partial flows. Part of the starch flows with the applicator roller to the metering blade and is used for paper coating. Another part of the starch flows through the overflow gap against the direction of travel of the application roller into a collecting tray back for renewed processing.
  • the overflow gap between the strip of the application chamber and the application roller has a decisive influence on the uniformity of the distribution of the thickness over the working width.
  • a disadvantage of this type of construction is that the overflow gap widens, especially in the middle of the paper web. This leads to higher volume flows in the middle and thus to an uneven distribution of the thickness over the working width. To compensate for this, the amount of starch overflow must be kept very high. Depending on the speed of the paper web, the amount of starch overflow is 10 to 30 times the amount required to coat the web. Due to the high pump performance, these film presses have a high energy consumption and the resulting poor economic efficiency.
  • film presses with a perforated doctor have been developed.
  • the perforated scraper is a piercing or applied scraper on the application roller arranged.
  • These film presses are made for example EP 2 646 169 B1 and EP 3 023 163 A1 known.
  • the overflow amount of starch flows evenly across the working width through holes or slots in the scraper into a collecting tray. With this solution the overflow quantity of the starch can be reduced by 10% to 20%, but a continuous flow of the starch from the application zone is still necessary in order to avoid disruptive air inclusions in the application zone. Therefore, the economy is not particularly good here either.
  • the application chamber was replaced by spray nozzles in the film presses.
  • the starch is pre-metered via free jet nozzles.
  • the starch is sprayed onto the application roller as a thin film.
  • the subsequent equalization can be carried out using a conventional metering doctor, such as in EP 0 881 330 B1 described.
  • Film presses with free jet nozzles without a doctor blade are also known and are described, for example, in US Pat EP 0 670 004 B1 and DE 20 2017 100 655 U1 .
  • the free jet nozzles enable a very thin film to be applied to the application roller. This reduces the amount of starch in circulation to a minimum.
  • the film presses with the spray nozzles have the decisive disadvantage that the maximum solids content of the starch is limited to approx. 14%. Particularly when the starch solids content is high, particles of the starch adhere to the free jet nozzles. This leads to the formation of streaks and the resulting uneven distribution of the thickness across the width of the web. In the worst case, the nozzles will clog and production will be interrupted.
  • Another disadvantage is the formation of a mist from the starch particles in the application zone. This is where the small starch particles adhere to the entire surface of the film press.
  • hardness of a roller is understood as the hardness of the outer layer or the outer cover of the corresponding roller.
  • P&J hardness is a common measure for rolls. It can be determined using commercially available devices, such as the P&J Zwick 3108 hardness tester, which meets the requirements of the ASTM D531-89 standard.
  • the object of the invention is therefore to create a device that allows an economically more efficient application of an application medium, in particular starch, to a moving material web when the material web is passed through a treatment press nip after the application of the starch, as in the preamble of claim 1 executed.
  • a curtain applicator is used as the applicator, with which very high solids contents of application medium, in particular starch, of up to 40%, preferably 15% to 35%, can be applied in one or more layers.
  • the application medium is transferred indirectly to the material web via a heated transfer element.
  • an exact control of the line load distribution over the roll width is provided, for which the press nip has at least one roll with a fixed or adjustable camber, in particular a bending adjustment roll.
  • Line forces in the press nip between 20 kN / m and 200 kN / m, preferably 80 kN / m and 120 kN / m, can then be varied over the entire pressing force range, since an exact cross-sectional thickness control is possible regardless of the level of the line load.
  • the same also applies to the temperature of a heated roller, so that at least one application roller is further provided according to the invention to be designed as a heated roller.
  • the temperature of the heated roller is preferably controlled in the range from 50.degree. C. to 150.degree. C., preferably in the range from 90.degree. C. to 120.degree.
  • the press nip can be formed by two application rollers, both of which can be configured as heated rollers.
  • the applicator rolls are preferably hard rolls with a hardness of less than 30 P&J (Pusey & Jones).
  • the accuracy of the outlet gap of the delivery nozzle for the curtain applicator is preferably in the range from ⁇ 2.5 ⁇ m to ⁇ 10 ⁇ m, particularly preferably from ⁇ 4 ⁇ m to ⁇ 8 ⁇ m. This applies in particular to the usual gap widths in the range from 0.2 to 1.5 mm.
  • the invention relates to a device for indirectly applying an application medium 2.1, 2.2, in particular starch, on at least one side of a running material web 13, in particular a paper or cardboard web, by means of at least one curtain applicator 1.1, 1.2 with dispensing nozzle 14.1, 14.2.
  • the at least one curtain applicator 1.1, 1.2 is followed by a press nip N for creating a hydraulic pressure when the material web 13 passes through the press nip N, which allows the moist application medium 2.1, 2.2 to penetrate into the material web 13.
  • the press nip N is preferably a hard nip which is formed by two hard rollers, the applicator rollers 7, 8.
  • the at least one curtain applicator 1.1, 1.2 is designed to deliver an application medium 2.1, 2.2 with a solids content in at least one layer of between 10% and 40%.
  • the at least one press nip N is equipped with at least one heated application roller 7, and the heated application roller 7 and / or a counter-element is designed as an application roller 8 with a fixed or adjustable camber 16 .
  • the curtain applicator 1.1, 1.2 has a discharge nozzle 14.1, 14.2 with an outlet gap 15, which has an accuracy in the range of ⁇ 2.5 ⁇ m to ⁇ 10 ⁇ m in Has gap length with a gap width of preferably 0.2 to 1.5 mm.
  • the spatial position of a respective curtain applicator 1.1, 1.2 relative to the press nip N is adjustable for an arrangement for indirect application of the application medium 2.1, 2.2 with a selectable dwell time of 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 applicator roller 8 with adjustable camber 16 is preferably a deflection compensation roller.
  • both application rollers 7, 8 of the press nip N are preferably designed as heated rollers.
  • the application rollers 7, 8 of the press nip N preferably have coatings with less than 30 P&J.
  • the application rollers 7, 8 of the press nip N are designed for a temperature of the roller surface of 50.degree. C. to 150.degree. C., particularly preferably 100.degree. To 120.degree.
  • the line load can be selected in the range from 20 kN / m to 200 kN / m.
  • An angle ⁇ for a point of impact of the curtain of the application medium 2.1, 2.2 on an application roller 7, 8 of the press nip N is preferably between -90 ° and + 45 °.
  • the respective curtain applicator 1.1, 1.2 is designed to control the solids content of the application medium 2.1, 2.2 in at least one layer of 25% to 55%.
  • the application weight of the application medium per side can be 0.5 to 6 g / m 2 and the temperature of the application medium, in particular the thickness, can be in the range from 55 ° to 99 ° C. before application to an application roller 7, 8. Furthermore, the viscosity of the application medium can be significantly higher than in the case of film presses, namely 20 to 500 mPa s (Brookfield 100 rpm).
  • the specific volume flow from the nozzle of the curtain applicator 1.1, 1.2 is in the range from 4 l / (min xm) to 30 l / (min xm).
  • a film is preferably applied to the respective application roller 7, 8 of the application medium 2.1, 2.2, in particular starch, applied in the range from 5 ml / m 2 to 100 ml / m 2 .
  • guide rollers 12 can also be provided, which determine a treatment path of the running material web 13 between the curtain applicator 1.1, 1.2 and the press nip N.
  • the application medium 2.1 in particular starch
  • a rotating application roller 7 with a curtain applicator 1.1 For a two-sided application, a further, for example single-layer application medium (film) 2.2 is applied to a second rotating application roller 8 with a second curtain applicator 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 nip N can be selected individually for each side and can therefore also be selected differently.
  • the position of the respective curtain applicator unit 1.1, 1.2 with respect to the associated applicator rollers 7, 8 can be changed in the direction of the arrow X by, for example, horizontal and possibly also vertical displacement.
  • a specific roller outer circumference length which corresponds to the dwell time, can thereby be set between the impact of the curtain and its entry into the press nip N and thus the dwell time can be increased or decreased, as the angle ⁇ indicates. If the application roller 7, 8 is heated, the dwell time can be used to influence an increase in temperature of the application medium 2.1, 2.2 before it enters the press nip N. The application medium 2.1, 2.2 can then be thermally pretreated in the press nip N between the application rollers 7, 8 are pressed into the material web 1 on both sides.
  • a starter tub 4.1, 4.2 with a quick start device 5.1, 5.2 can be assigned to each curtain applicator 1.1, 1.2.
  • the diameter of the application rollers 7, 8 can be, for example, 400 to 1800 mm.
  • heated application rollers 7, 8 heated transfer belts can also be used.
  • a multi-layer curtain applicator 1.1, 1.2 is provided in each case, which is designed here, for example, as a two-layer.
  • the two curtain applicator units 1.1, 1.2 can also each have different multilayer designs.
  • thickness can be introduced into the material web for penetration.
  • the outer (second) layer can, for example, be a pigment coating.
  • the solids content of the starch in the 1st layer can be, for example, 6% to 50%, preferably 15% to 35%.
  • the solids content of the coating color in the 2nd layer can be in the range between 20% and 68%.
  • the two-layer curtain for example, can consist of two layers of starch.
  • the first layer can have a lower concentration of starch in order to achieve a higher penetration for high splitting strength.
  • a second layer with a higher starch concentration increases the modulus of elasticity of the outer layers close to the surface and thus achieves a higher flexural strength.

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  • Paper (AREA)
EP19000589.2A 2019-12-23 2019-12-23 Dispositif d'application d'un milieu d'application Pending EP3842591A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP19000589.2A EP3842591A1 (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 EP3842591A1 (fr) 2019-12-23 2019-12-23 Dispositif d'application d'un milieu d'application

Publications (1)

Publication Number Publication Date
EP3842591A1 true EP3842591A1 (fr) 2021-06-30

Family

ID=69104190

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19000589.2A Pending EP3842591A1 (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) EP3842591A1 (fr)
CN (1) CN113089369B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023169740A1 (fr) * 2022-03-09 2023-09-14 Voith Patent Gmbh Buse d'application, unité d'application, et procédé
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
EP4316671A1 (fr) * 2022-08-01 2024-02-07 Andritz Küsters GmbH Mécanisme d'application à nappe permettant d'appliquer des agents d'application sur au moins un cylindre applicateur
AT526630A3 (de) * 2022-11-03 2024-08-15 Valmet Technologies Oy Behandlungssystem zur Behandlung einer Faserbahn

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Citations (15)

* 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
EP0622127A1 (fr) * 1993-04-30 1994-11-02 Minnesota Mining And Manufacturing Company Appareil et procédé de revêtement
EP0670004B1 (fr) 1993-09-14 1997-04-23 Voith Sulzer Papiermaschinen GmbH Procede et dispositif permettant d'effectuer le couchage d'une bande continue de materiau
EP0791687A1 (fr) * 1996-02-21 1997-08-27 Voith Sulzer Papiermaschinen GmbH Procédé et dispositif pour enduire une substance liquide ou pâteuse sur une bande en mouvement
DE10012344A1 (de) 2000-03-14 2001-09-20 Voith Paper Patent Gmbh Vorhang-Auftragsverfahren
EP0881330B1 (fr) 1997-05-27 2002-11-06 Voith Paper Patent GmbH Procédé et dispositif pour enduire un matériau fluide ou pâteux sur une bande en mouvement
DE102006057870A1 (de) 2006-12-08 2008-06-12 Voith Patent Gmbh Mehrschichtauftrag
EP2090694A1 (fr) * 2008-02-12 2009-08-19 Voith Patent GmbH Procédé d'application d'un enduit et de lissage combiné
DE102009012920A1 (de) * 2009-03-12 2010-09-16 Papiertechnische Stiftung Verfahren zum Auftragen eines Auftragsmediums auf bahnförmige Materialien und Vorrichtung zur Durchführung des Verfahrens
EP3023163A1 (fr) 2014-11-18 2016-05-25 Valmet Technologies, Inc. Lame d'étanchéité
DE202017100655U1 (de) 2016-03-15 2017-02-20 Valmet Technologies Oy Vorrichtung zur Behandlung von Faserbahnen
EP2646169B1 (fr) 2010-11-30 2017-02-22 Horst Sprenger GmbH Dispositif pour enduire des bandes de papier ou de carton
DE102018100924A1 (de) 2017-02-01 2018-08-02 Voith Patent Gmbh Verfahren und Vorrichtung zum Auftragen von Stärke
EP2811069B1 (fr) 2012-11-22 2018-08-29 Valmet Technologies, Inc. Dispositif pour traiter un voile de fibres

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013234400A (ja) * 2012-05-08 2013-11-21 Oji Holdings Corp 塗工紙の製造方法
DE102014223910A1 (de) 2014-11-24 2016-05-25 Homag Holzbearbeitungssysteme Gmbh Werkstückzuführvorrichtung

Patent Citations (15)

* 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
EP0622127A1 (fr) * 1993-04-30 1994-11-02 Minnesota Mining And Manufacturing Company Appareil et procédé de revêtement
EP0670004B1 (fr) 1993-09-14 1997-04-23 Voith Sulzer Papiermaschinen GmbH Procede et dispositif permettant d'effectuer le couchage d'une bande continue de materiau
EP0791687A1 (fr) * 1996-02-21 1997-08-27 Voith Sulzer Papiermaschinen GmbH Procédé et dispositif pour enduire une substance liquide ou pâteuse sur une bande en mouvement
EP0881330B1 (fr) 1997-05-27 2002-11-06 Voith Paper Patent GmbH Procédé et dispositif pour enduire un matériau fluide ou pâteux sur une bande en mouvement
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
EP2090694A1 (fr) * 2008-02-12 2009-08-19 Voith Patent GmbH Procédé d'application d'un enduit et de lissage combiné
DE102009012920A1 (de) * 2009-03-12 2010-09-16 Papiertechnische Stiftung Verfahren zum Auftragen eines Auftragsmediums auf bahnförmige Materialien und Vorrichtung zur Durchführung des Verfahrens
EP2646169B1 (fr) 2010-11-30 2017-02-22 Horst Sprenger GmbH Dispositif pour enduire des bandes de papier ou de carton
EP2811069B1 (fr) 2012-11-22 2018-08-29 Valmet Technologies, Inc. Dispositif pour traiter un voile de fibres
EP3023163A1 (fr) 2014-11-18 2016-05-25 Valmet Technologies, Inc. Lame d'étanchéité
DE202017100655U1 (de) 2016-03-15 2017-02-20 Valmet Technologies Oy Vorrichtung zur Behandlung von Faserbahnen
DE102018100924A1 (de) 2017-02-01 2018-08-02 Voith Patent Gmbh Verfahren und Vorrichtung zum Auftragen von Stärke

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023169740A1 (fr) * 2022-03-09 2023-09-14 Voith Patent Gmbh Buse d'application, unité d'application, et procédé
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
EP4316671A1 (fr) * 2022-08-01 2024-02-07 Andritz Küsters GmbH Mécanisme d'application à nappe permettant d'appliquer des agents d'application sur au moins un cylindre applicateur
AT526630A3 (de) * 2022-11-03 2024-08-15 Valmet Technologies Oy Behandlungssystem zur Behandlung einer Faserbahn

Also Published As

Publication number Publication date
CN113089369A (zh) 2021-07-09
CN113089369B (zh) 2023-10-24
US20210189660A1 (en) 2021-06-24
US11718961B2 (en) 2023-08-08

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