EP2090694A1 - Procédé d'application d'un enduit et de lissage combiné - Google Patents

Procédé d'application d'un enduit et de lissage combiné Download PDF

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Publication number
EP2090694A1
EP2090694A1 EP09150822A EP09150822A EP2090694A1 EP 2090694 A1 EP2090694 A1 EP 2090694A1 EP 09150822 A EP09150822 A EP 09150822A EP 09150822 A EP09150822 A EP 09150822A EP 2090694 A1 EP2090694 A1 EP 2090694A1
Authority
EP
European Patent Office
Prior art keywords
material web
roller
medium
application medium
heated
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Withdrawn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
EP09150822A
Other languages
German (de)
English (en)
Inventor
Günter HALMSCHLAGER
Manfred Feichtinger
Kurt Eichinger
Martin Lehrner
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.)
Voith Patent GmbH
Original Assignee
Voith Patent 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 Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP2090694A1 publication Critical patent/EP2090694A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • 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
    • D21H19/10—Coatings without pigments
    • D21H19/12—Coatings without pigments applied as a solution using water as the only solvent, e.g. in the presence of acid or alkaline compounds
    • 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
    • D21H19/66—Coatings characterised by a special visual effect, e.g. patterned, textured
    • 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
    • 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

  • the invention relates to a method and a device for applying a medium to a moving material web, in particular paper or board web, and for smoothing the medium applied to the web.
  • a method and a device are known in which a polymer layer is applied to the material web and the polymer layer applied to the material web, while still wet, is brought into contact with a hot surface in order to cause the water contained in it to boil and thereby cavities arise below the surface, but the outer surface of the layer is smooth.
  • the application medium is applied to the material web and the material web is then fed to a smooth heatable drying cylinder, wherein the material web is fed to the drying cylinder via a press roll.
  • the invention has for its object to provide an improved method and an improved device of the type mentioned, with which the two aforementioned functionalities, namely that of a coating unit and the one or more smoothing units in a simple and efficient manner combined with each other.
  • the two aforementioned functionalities namely that of a coating unit and the one or more smoothing units in a simple and efficient manner combined with each other.
  • a corresponding increase in volume, increase in smoothness and pigment savings should be achieved.
  • this object is achieved in that the application medium is transferred to the web, which is guided with the still moist coating medium provided material web formed by a heated smooth press roll and a soft backing roll press nip in which the web with their Application medium having side comes into contact with the heated smooth press roller, and the web after the press nip withdrawn from the heated smooth press roll and immediately thereafter, in particular, a non-contact drying device is supplied.
  • drying with contact dryers eg. B. drying cylinder possible.
  • the take-off angle with which the material web is drawn off from the heated, smooth press roll is preferably variably adjustable.
  • the area over which the heated, smooth pressure roller is wrapped by the material web can thus be set variably.
  • the application medium is preferably transferred to the material web in the region of the soft counter-roller wrapped around the material web.
  • the position at which the medium in question is applied to the material web again be variably adjustable.
  • the application medium can be applied to the material web in the region of the soft mating roll, which is looped around by the material web, for example via an applicator roll or a free jet.
  • the application medium is applied to the material web in an area in which it does not touch the soft counter-roller.
  • the application medium can be applied to the material web in particular via a free jet and / or via a curtain coater (curtain coating method) without excess.
  • the metering of the order of the application medium is advantageously carried out via a blade, a squeegee bar and / or the like.
  • the heated smooth press roll is additionally heated by at least one external auxiliary heater.
  • the smooth press roller is heated from the inside.
  • about the at least one external auxiliary heating the smoothing roller is heated even more.
  • the soft counter roll and the heated smooth press roll with variable adjustable force can be pressed against each other.
  • the press length is selected so that the residence time of the web in the press nip is at least 0.5 milliseconds, preferably at least 1 millisecond.
  • the temperature of the heated press roll is more than 200 ° C.
  • the application of coating medium is advantageously carried out at a distance of less than 5 meters, in particular less than 3 meters in front of the nip.
  • the material web is simultaneously deflected in the device for non-contact drying.
  • the material web is deflected in the device for non-contact drying in a direction which is generally opposite to the direction in which the material web of the soft backing roll or one of these upstream deflection roll is supplied.
  • the above-mentioned object is achieved according to the invention in that it comprises a commissioned unit for transferring the application medium to the web, a heated smooth press roll and a soft counter roll, wherein the web provided with the still moist application medium by the smooth between the heated Press roll and the soft mating roll formed press nip is guided, in which the material web comes with its application medium having the side of the heated smooth press roller in contact, and the following deducted from the heated smooth press roll web following the press nip immediately thereafter, in particular a device for non-contact Drying is supplied.
  • the length of the press nip is preferably more than 30 mm. This improves the smoothing effect.
  • the method according to the invention and the device according to the invention are thus in particular suitable for performing a glue / starch or other surface application on a material web with immediately following smoothing by a highly heated smoothing roll and special web guidance, in particular at a variable withdrawal angle from the heated roll.
  • a highly heated smoothing roll and special web guidance, in particular at a variable withdrawal angle from the heated roll.
  • the compact design according to the invention also ensures good runability of the entire system.
  • the single figure of the drawing shows a schematic representation of a device 10 for applying a medium to a moving material web 12 and for smoothing the applied to the material web 12 medium.
  • the material web 12 may in particular be a paper or board web.
  • the apparatus 10 comprises a commissioning unit 13 for transferring the application medium to the material web 12, a heated smooth press roller 14 and a soft counter-roller 16, that is, a counter-roller 16 having a relatively softer outer peripheral surface compared to the heated press roller 14.
  • the material web 12 provided with the still moist application medium is guided by the press nip 18 formed between the heated smooth press roll 14 and the soft counter roll 16, in which the material web 12 with its the application medium having side with the heated smooth press roller 14 comes into contact.
  • the material web 12 is pulled off the heated smooth press roller 14. Immediately following the heated smooth pressing roller 14, the material web 12 is then fed to a device 20 for non-contact drying.
  • the withdrawal angle ⁇ is variably adjustable.
  • the applicator 13 may comprise means such as, in particular, an applicator roll 22 or the like in order to transfer the application medium in the region of the soft counter-roller 16 looped around by the material web 12 onto the material web 12.
  • the position at which the medium in question is applied to the material web 12 in particular be variably adjustable.
  • the application medium can also be applied to the material web 12, for example, via a free jet in the region of the soft counter-roller 16.
  • the metering of the order of the application medium can be done for example by means of a soft counter-roller 16 acting metering 24.
  • a soft counter-roller 16 acting metering 24 for example, a blade, a doctor blade and / or the like may be provided.
  • the heated smooth pressing roller 14 may be associated with at least one external auxiliary heater 26.
  • at least one external auxiliary heater 26 In the present case, for example, two such external auxiliary heaters 26 are provided.
  • a heated smooth press roller 14 so in particular an internally heated roller can be used.
  • the roller 14 is then additionally heated.
  • the force with which the soft counter-roller 16 and the heated smooth press roller 14 can be pressed against one another is preferably variably adjustable.
  • the contact pressure can be variably adjusted, in particular via a corresponding executed control and / or regulating device.
  • the upper roller 14 against the lower roller 16 can be pressed.
  • the material web 12 can be deflected simultaneously in the device 20 for non-contact drying. In this case, for example, a deflection by at least substantially 180 ° take place.
  • the material web 12 can be deflected in the device 20 in particular in a direction which is generally opposite to the direction in which the material web 12 of the soft counter-roller 16 or of a preceding guide roller 28 is supplied thereto.
  • means or an applicator unit 13 may alternatively be provided to apply the application medium in an area on the material web 12, in which the soft counter-roller 16 is not yet touched.
  • the soft counter-roller 16 is not wrapped by the material web 12.
  • the material web 12 comes into contact with this soft counter-roller 16 at least substantially only in the region of the press-nip 18.
  • the heated smooth counter roll 14 has a Cr / Teflon reference.
  • the heated smooth press roll 14 and the soft backing roll 16 have an equal diameter, which is here 1168 mm, for example.
  • the two rolls can basically also have different diameters.
  • other surface hardnesses and diameters are conceivable in principle.
  • the line force in the press nip 18 is for example in a range between about 60 and about 100 kN / m. Basically, however, another line power range is conceivable.
  • the device 20 for non-contact drying can be heated, for example, with gas and / or steam. It can also comprise at least one cylinder. In particular, IR drying (gas / current) may also be provided.
  • the device 20 for non-contact drying with simultaneous web deflection comprises a so-called HCB-turn, which represents a combination of high load-bearing capacity (deflection of a web of material, in particular 180 ° at high web-trains) and high drying rates with space-saving web guidance.

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  • Paper (AREA)
  • Coating Apparatus (AREA)
EP09150822A 2008-02-12 2009-01-19 Procédé d'application d'un enduit et de lissage combiné Withdrawn EP2090694A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810000283 DE102008000283A1 (de) 2008-02-12 2008-02-12 Kombiniertes Auftrags- und Glättverfahren

Publications (1)

Publication Number Publication Date
EP2090694A1 true EP2090694A1 (fr) 2009-08-19

Family

ID=40666767

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09150822A Withdrawn EP2090694A1 (fr) 2008-02-12 2009-01-19 Procédé d'application d'un enduit et de lissage combiné

Country Status (2)

Country Link
EP (1) EP2090694A1 (fr)
DE (1) DE102008000283A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210189660A1 (en) * 2019-12-23 2021-06-24 Andritz Küsters Gmbh Device for applying a treatment substance

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19821446A1 (de) * 1998-05-13 1999-11-18 Voith Sulzer Papiertech Patent Vorrichtung zum Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn, insbesondere aus Papier oder Karton, und Maschine zur Papier- oder Kartonherstellung
EP1674615A1 (fr) * 2004-12-24 2006-06-28 Voith Paper Patent GmbH Dispositif de lissage
DE102004062121A1 (de) * 2004-12-23 2006-07-13 Voith Paper Patent Gmbh Vorrichtung zum Behandeln einer laufenden Papier-, Karton- oder anderen Faserstoffbahn
EP1736321A1 (fr) * 2005-06-22 2006-12-27 Voith Patent GmbH Procédé pour la fabrication d'un papier thermique
WO2007100667A2 (fr) 2006-02-23 2007-09-07 Meadwestvaco Corporation Procédé de traitement d'un substrat

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19821446A1 (de) * 1998-05-13 1999-11-18 Voith Sulzer Papiertech Patent Vorrichtung zum Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn, insbesondere aus Papier oder Karton, und Maschine zur Papier- oder Kartonherstellung
DE102004062121A1 (de) * 2004-12-23 2006-07-13 Voith Paper Patent Gmbh Vorrichtung zum Behandeln einer laufenden Papier-, Karton- oder anderen Faserstoffbahn
EP1674615A1 (fr) * 2004-12-24 2006-06-28 Voith Paper Patent GmbH Dispositif de lissage
EP1736321A1 (fr) * 2005-06-22 2006-12-27 Voith Patent GmbH Procédé pour la fabrication d'un papier thermique
WO2007100667A2 (fr) 2006-02-23 2007-09-07 Meadwestvaco Corporation Procédé de traitement d'un substrat

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210189660A1 (en) * 2019-12-23 2021-06-24 Andritz Küsters Gmbh Device for applying a treatment substance
EP3842591A1 (fr) * 2019-12-23 2021-06-30 Andritz Küsters GmbH Dispositif d'application d'un milieu d'application
CN113089369A (zh) * 2019-12-23 2021-07-09 安德里茨库斯特斯有限责任公司 用于涂布处理物质的装置
US11718961B2 (en) 2019-12-23 2023-08-08 Andritz Küsters Gmbh Device for applying a treatment substance
CN113089369B (zh) * 2019-12-23 2023-10-24 安德里茨库斯特斯有限责任公司 用于涂布处理物质的装置

Also Published As

Publication number Publication date
DE102008000283A1 (de) 2009-08-13

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