EP1533418A2 - Dispositif d'enduction - Google Patents

Dispositif d'enduction Download PDF

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Publication number
EP1533418A2
EP1533418A2 EP04104338A EP04104338A EP1533418A2 EP 1533418 A2 EP1533418 A2 EP 1533418A2 EP 04104338 A EP04104338 A EP 04104338A EP 04104338 A EP04104338 A EP 04104338A EP 1533418 A2 EP1533418 A2 EP 1533418A2
Authority
EP
European Patent Office
Prior art keywords
application medium
application
degassing
curtain
applicator
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.)
Ceased
Application number
EP04104338A
Other languages
German (de)
English (en)
Other versions
EP1533418A3 (fr
Inventor
Christoph Henninger
Martin Tietz
Volker Fäthke
Stefan Reich
Uwe Fröhlich
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
Voith Paper 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, Voith Paper Patent GmbH filed Critical Voith Patent GmbH
Publication of EP1533418A2 publication Critical patent/EP1533418A2/fr
Publication of EP1533418A3 publication Critical patent/EP1533418A3/fr
Ceased 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
    • D21H23/46—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/005—Curtain coaters

Definitions

  • the invention relates to a device for one or both sides applying a highly viscous coating medium on a running surface, comprising a Curtain applicator and a degassing device for degassing the Order medium, wherein the curtain applicator the order medium as in im essentially gravity-induced moving curtain to the running surface and the surface when directly applied, the surface of a web especially paper or cardboard, and for indirect application, the surface a transfer element, preferably an applicator roll, which is the Application medium to the surface of the web emits.
  • the surface quality of a coating layer depends significantly on the application medium. Gas bubbles present in the application medium appear on the surface of the application layer, where they burst and form uncovered areas on the material web. One of the reasons for this is the requirement for gas-free order media.
  • the invention has the object of a device of the type mentioned To improve that in the future, even highly viscous order media can be processed as free of bubbles as possible.
  • the invention solves the problem by a device with the characterizing features of claim 1 and a method according to Claim 10.
  • the device according to the invention has at least one additional Degassing device for degassing and / or venting of the application medium.
  • the degassing performance of the device is significantly improved, so that the unwanted inclusion of gas bubbles in the application medium is avoided. Consequently, with such a degassed according to the invention the application medium Application layer on a high surface quality.
  • the Degassing devices arranged one behind the other and / or parallel to each other be.
  • the degassing be per se known vacuum degasser.
  • the device may also include a pulsation damper to compensate for Have pressure fluctuations.
  • a filter which is arranged in the supply line for the application medium immediately before the application nozzle. It filters out the unwanted deposits from the application medium.
  • Such a filter acts as a kind of "police filter” and can be formed as a sieve or protective cage. It can be installed directly in the interior of the pipeline and can be retrofitted in existing systems.
  • the sole FIGURE shows a device 10 for applying a coating medium on a paper or board web B.
  • the apparatus 10 has a container 11, in which the order medium is stored.
  • the order medium is with a Entry pump 12 of a first degassing 13 is supplied.
  • From there the application medium to a second degassing device 14.
  • the two Degassing 13 and 14 is withdrawn from the application medium gas to when applied to a here only indicated to be coated web B a ensure optimum surface quality of the coating.
  • the Degassing 13 and 14 vacuum degasser are the Degassing 13 and 14 vacuum degasser.
  • a discharge pump 15a and 15b each guide the application medium from the Degassing 13 and 14 from. Pump 15b feeds the application medium first filter 16 too. Since the degassing 13 and 14 a very high Generate negative pressure, there is the danger of before the discharge pumps 15a and 15b Cavitations. The cavitations lead to pressure fluctuations, whereby the Surface quality of the coating is adversely affected. To avoid that, is at least the discharge pump 15b in a certain height difference of the Venting device 14 spaced. In practice, a minimum distance of proven two meters, but can also be larger than three meters.
  • the filter 16 provides another contribution to Improvement of the surface quality of the coating.
  • a pulsation damper 18 After the filter 16 flows through the application medium in the selected Embodiment, a pulsation damper 18.
  • the pulsation damper 18 has the Task to compensate for pressure fluctuations in the device 10, and thus also to ensure a uniform application of the coating.
  • a further filter 19 is arranged, which filters out of the pipe system between the filter 16 and the curtain applicator 17 originating deposits from the application medium.
  • This filter 19 acts as the last safe link immediately before the commissioned work. From the filter 19 now passes the degassed and held free from impurities application medium finally to the curtain applicator 17, where it can be applied in the form of a closed curtain 20 either indirectly to an applicator roll, which emits the application medium to the surface of the material web to be coated, or the curtain 20 is applied directly (as also shown) directly to the surface of the material web B to be coated.
  • the lines between the filter 16 and the curtain applicator 17 are arranged upwardly ascending. In this way, gas can be better discharged from the lines between the filter 16 and applicator 17. The gas accumulates in the lines after the device 10 has been emptied and must therefore be removed when starting the device 10, so that a satisfactory surface quality of the order is achieved.

Landscapes

  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Paper (AREA)
EP04104338A 2003-11-12 2004-09-09 Dispositif d'enduction Ceased EP1533418A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10352807 2003-11-12
DE2003152807 DE10352807A1 (de) 2003-11-12 2003-11-12 Auftragsvorrichtung

Publications (2)

Publication Number Publication Date
EP1533418A2 true EP1533418A2 (fr) 2005-05-25
EP1533418A3 EP1533418A3 (fr) 2009-08-05

Family

ID=34428689

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04104338A Ceased EP1533418A3 (fr) 2003-11-12 2004-09-09 Dispositif d'enduction

Country Status (2)

Country Link
EP (1) EP1533418A3 (fr)
DE (1) DE10352807A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1811084A3 (fr) * 2005-12-16 2011-07-13 Voith Paper Patent GmbH Procédé et dispositif de dégazage d'une composition fluide ou pâteuse
WO2012010511A1 (fr) * 2010-07-20 2012-01-26 Voith Patent Gmbh Coucheuse rideau
WO2012041662A1 (fr) * 2010-09-30 2012-04-05 Voith Patent Gmbh Procédé de mise en œuvre d'un dispositif pour une application directe ou indirecte d'un milieu d'enduction liquide ou pâteux et dispositif
CN103882775A (zh) * 2012-12-24 2014-06-25 中国制浆造纸研究院 一种用于涂料除气的方法
WO2021239310A1 (fr) * 2020-05-27 2021-12-02 Voith Patent Gmbh Dispositif de revêtement
CN115613385A (zh) * 2022-09-29 2023-01-17 东莞建晖纸业有限公司 一种预涂和中涂废水零排放系统

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005017952B4 (de) * 2005-04-18 2013-03-07 Voith Patent Gmbh Verfahren zum Entgasen von Streichfarbe
DE102005060847A1 (de) * 2005-12-16 2007-06-28 Voith Patent Gmbh Verfahren und Vorrichtung zum Entgasen eines flüssigen bis pastösen Mediums
DE102008000451A1 (de) 2008-02-29 2009-09-03 Voith Patent Gmbh Streichstation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5792317A (en) * 1996-02-07 1998-08-11 Gl&V-Paper Machine Group, Inc. Wet end starch application
DE19700633B4 (de) * 1997-01-10 2005-06-02 Voith Sulzer Papiermaschinen Gmbh Vorrichtung zum Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn, vorzugsweise aus Papier oder Karton, und Maschine zur Papier- oder Kartonherstellung
JP2001087698A (ja) * 1999-09-22 2001-04-03 Ishikawajima Harima Heavy Ind Co Ltd カーテンコータ用カラー脱泡装置
DE10032430A1 (de) * 2000-07-04 2002-01-17 Voith Paper Patent Gmbh Auftragsvorrichtung
ATE368149T1 (de) * 2001-02-16 2007-08-15 Voith Patent Gmbh Verfahren zur herstellung von gestrichenem papier oder karton& x9;
DE10120818A1 (de) * 2001-04-27 2002-10-31 Giesecke & Devrient Gmbh Verfahren und Vorrichtung zum Einbringen von Merkmalsstoffen in eine Papierbahn

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1811084A3 (fr) * 2005-12-16 2011-07-13 Voith Paper Patent GmbH Procédé et dispositif de dégazage d'une composition fluide ou pâteuse
WO2012010511A1 (fr) * 2010-07-20 2012-01-26 Voith Patent Gmbh Coucheuse rideau
CN103080421A (zh) * 2010-07-20 2013-05-01 福伊特专利公司 帘幕涂覆器
CN103080421B (zh) * 2010-07-20 2016-06-29 福伊特专利公司 帘幕涂覆器
WO2012041662A1 (fr) * 2010-09-30 2012-04-05 Voith Patent Gmbh Procédé de mise en œuvre d'un dispositif pour une application directe ou indirecte d'un milieu d'enduction liquide ou pâteux et dispositif
CN103882775A (zh) * 2012-12-24 2014-06-25 中国制浆造纸研究院 一种用于涂料除气的方法
WO2021239310A1 (fr) * 2020-05-27 2021-12-02 Voith Patent Gmbh Dispositif de revêtement
CN115613385A (zh) * 2022-09-29 2023-01-17 东莞建晖纸业有限公司 一种预涂和中涂废水零排放系统

Also Published As

Publication number Publication date
EP1533418A3 (fr) 2009-08-05
DE10352807A1 (de) 2005-06-23

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