EP1429924B1 - Dispositif pour appliquer un revetement - Google Patents

Dispositif pour appliquer un revetement Download PDF

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Publication number
EP1429924B1
EP1429924B1 EP02760116A EP02760116A EP1429924B1 EP 1429924 B1 EP1429924 B1 EP 1429924B1 EP 02760116 A EP02760116 A EP 02760116A EP 02760116 A EP02760116 A EP 02760116A EP 1429924 B1 EP1429924 B1 EP 1429924B1
Authority
EP
European Patent Office
Prior art keywords
rotary screen
coating
screen
insert
coating material
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.)
Expired - Lifetime
Application number
EP02760116A
Other languages
German (de)
English (en)
Other versions
EP1429924A1 (fr
Inventor
Detlef Stolten
Hendrik Dohle
Jürgen Mergel
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.)
Forschungszentrum Juelich GmbH
Original Assignee
Forschungszentrum Juelich 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 Forschungszentrum Juelich GmbH filed Critical Forschungszentrum Juelich GmbH
Publication of EP1429924A1 publication Critical patent/EP1429924A1/fr
Application granted granted Critical
Publication of EP1429924B1 publication Critical patent/EP1429924B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/40—Inking units
    • B41F15/42—Inking units comprising squeegees or doctors
    • 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
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/10—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the liquid or other fluent material being supplied from inside the roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/40—Inking units

Definitions

  • the invention relates to a coating device, in particular for the coating of a substrate with catalyst material.
  • the coating composition in particular a catalyst material
  • a scraper through a fine mesh screen onto the component or the membrane.
  • screen mesh made of metal, textile or plastic threads.
  • the advantage of screen printing lies in the high layer thickness that can be applied. Screen printing differs between flat screen printing and rotary screen printing.
  • the printing form is formed by a frame covered with a fabric.
  • the component is placed under the frame, printed and transported on.
  • a stainless steel mesh is often used, which is formed into a hollow cylinder.
  • the coating material In a cylindrical rotary screen, the coating material is typically fed centrally through a supply via a lateral bore or central supply channel. Due to the rotation of the screen during operation, the coating material accumulates in front of the scraper. In order to exclude a patchy coating through the sieve pores on the substrate, an excess of coating material must always be present in front of the scraper. Typically, the coating material rolls up the stripper and falls back onto the screen before the stripper. This means that a part of the coating material must always be used as a precautionary excess portion during the process, which is not available for the actual coating. This proportion is the less favorable the thinner the layer to be applied and / or the smaller the area to be coated per substrate or component and method step.
  • the object of the invention is to provide a coating device in which even the smallest amounts of coating material can be applied effectively and thus costs can be saved.
  • the coating device has a rotary screen, a central feed bore for feeding coating material into the interior of the rotary screen, and a scraper. Furthermore, the coating apparatus comprises an insert within the rotary screen, which reduces the free volume within the rotary screen by at least 50%.
  • the void volume is even reduced by more than 80%.
  • a likewise cylindrical insert which is arranged centrally within the rotary screen is suitable is.
  • the supply of the coating material via a supply bore, or a central supply channel, which is followed by another channel.
  • the coating material is brought directly to the sieve.
  • the further channel is mounted such that it feeds the coating material to the screen in the vicinity of the scraper. In this way, the coating material reaches the screen during operation of the coating device directly in front of the stripper.
  • the void volume, which is occupied by the precautionary introduced coating material advantageously reduced only to the other channel and the area directly in front of the scraper.
  • this is equipped with an additional jacket of the rotary screen.
  • the coating material used regularly contains solvents which make processing of the coating material possible. During operation of the coating occurs evaporation of the solvent, which initially complicates further processing and then prevented.
  • the casing of the rotary screen according to the invention reduces the free volume outside the coating apparatus in such a way that the evaporation of the solvent is reduced and thus the processing time of the coating material, compared to the prior art, can be significantly extended.
  • FIG. 1 shows a rotary screen drum, as can be found in the prior art, in cross section.
  • the outer rotating screen (2) is passed over the film to be coated, layer (1), etc.
  • the revolving counter-roller (5) prevents the film from bending during the coating.
  • the material for coating is introduced through a central opening (3), or a channel in the rotary screen drum. A certain excess of material accumulates during the coating inside the screen in front of the doctor blade (4), ensuring a consistent and complete coating. The disadvantage of this excess must also at Small coating surfaces take place.
  • the screen drum comprises a cylindrical insert (7) mounted inside the screen drum, centered.
  • the supply (3a) of the coating material via a central channel (3) through the insert to the periphery of the screen.
  • the channel can be designed both as a tubular channel and as a gap over the entire width of the screen drum.
  • only a small volume remains between the insert (7), the sieve (2) and the doctor blade (4), so that even a slight excess of coating material lead to a complete and uniform coating.
  • the supply of the coating material can therefore be very metered and minimized overall for a coating process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Screen Printers (AREA)
  • Coating Apparatus (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
  • Seal Device For Vehicle (AREA)
  • Glass Compositions (AREA)

Claims (5)

  1. Dispositif de revêtement comportant un écran rotatif (2), une forure d'admission (3) centrale pour l'admission du matériau de revêtement à l'intérieur de l'écran rotatif, ainsi qu'une raclette (4), caractérisé par un insert (7) symétrique sur le plan radial, qui est monté à l'intérieur de l'écran rotatif et qui diminue d'au moins 50 % le volume libre à l'intérieur de l'écran rotatif (2).
  2. Dispositif de revêtement selon la revendication 1 précédente, comportant un insert (7), qui diminue de plus de 80 % le volume libre.
  3. Dispositif de revêtement selon l'une quelconque des revendications 1 à 2 précédentes, comportant un insert (7), qui est disposé par symétrie de révolution autour de la forure d'admission (3) ou d'un conduit d'admission (3) central, et qui comporte au moins un conduit (3a) supplémentaire, sensiblement radial, qui mène depuis la forure d'admission (3) jusqu'à l'écran (2).
  4. Dispositif de revêtement selon la revendication 3 précédente, dans lequel le conduit (3a) supplémentaire débouche dans une zone de la périphérie de l'écran (2), en amont de laquelle est située la raclette (4) en cours de service.
  5. Dispositif de revêtement selon l'une quelconque des revendications 1 à 4 précédentes, comportant une enveloppe (6) supplémentaire de l'écran rotatif (2).
EP02760116A 2001-09-26 2002-08-09 Dispositif pour appliquer un revetement Expired - Lifetime EP1429924B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10147601A DE10147601B4 (de) 2001-09-26 2001-09-26 Beschichtungsvorrichtung
DE10147601 2001-09-26
PCT/DE2002/002934 WO2003026893A1 (fr) 2001-09-26 2002-08-09 Dispositif pour appliquer un revetement

Publications (2)

Publication Number Publication Date
EP1429924A1 EP1429924A1 (fr) 2004-06-23
EP1429924B1 true EP1429924B1 (fr) 2008-12-17

Family

ID=7700447

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02760116A Expired - Lifetime EP1429924B1 (fr) 2001-09-26 2002-08-09 Dispositif pour appliquer un revetement

Country Status (4)

Country Link
EP (1) EP1429924B1 (fr)
AT (1) ATE417731T1 (fr)
DE (2) DE10147601B4 (fr)
WO (1) WO2003026893A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004058542A1 (de) * 2004-12-03 2006-06-08 Nordson Corporation, Westlake Rotationsauftragskopf und Etikettieranlage zum Aufbringen von Etiketten
US7771556B2 (en) 2005-07-01 2010-08-10 Nordson Corporation Apparatus and process to apply adhesive during labeling operations
CN101973157B (zh) * 2010-09-28 2012-01-04 深圳市凯力诚实业发展有限公司 高速印刷装置、方法及生产线
DE102018205196B3 (de) 2018-04-06 2019-07-11 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zur lokal definierten Ausbildung von Funktionsschichten auf der Oberfläche einer Innenwand eines hohlzylindrischen Substrates

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE35937C (de) * G. GERSTENBERGER in Chemnitz Klebstoff-Auftragwalze mit Zuführung des Klebstoffs von innen
US2333382A (en) * 1941-07-12 1943-11-02 Curt P Kent Fabric printing apparatus
NL7006063A (fr) * 1970-04-26 1971-10-28
ATE172387T1 (de) * 1994-02-12 1998-11-15 Johannes Zimmer Vorrichtung zum zuführen einer substanz an eine auftragungsstelle, verfahren zur substanzzuführung und zum reinigen der vorrichtung sowie verfahren zur herstellung der vorrichtung und hilfsvorrichtung zum reinigen der vorrichtung

Also Published As

Publication number Publication date
DE10147601B4 (de) 2005-06-09
DE50213132D1 (de) 2009-01-29
DE10147601A1 (de) 2003-04-24
EP1429924A1 (fr) 2004-06-23
ATE417731T1 (de) 2009-01-15
WO2003026893A1 (fr) 2003-04-03

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