WO2003026893A1 - Dispositif pour appliquer un revetement - Google Patents

Dispositif pour appliquer un revetement Download PDF

Info

Publication number
WO2003026893A1
WO2003026893A1 PCT/DE2002/002934 DE0202934W WO03026893A1 WO 2003026893 A1 WO2003026893 A1 WO 2003026893A1 DE 0202934 W DE0202934 W DE 0202934W WO 03026893 A1 WO03026893 A1 WO 03026893A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotary screen
coating
coating device
screen
insert
Prior art date
Application number
PCT/DE2002/002934
Other languages
German (de)
English (en)
Inventor
Detlef Stolten
Hendrik Dohle
Jürgen Mergel
Original Assignee
Forschungszentrum Jülich 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 Jülich GmbH filed Critical Forschungszentrum Jülich GmbH
Priority to EP02760116A priority Critical patent/EP1429924B1/fr
Priority to DE50213132T priority patent/DE50213132D1/de
Publication of WO2003026893A1 publication Critical patent/WO2003026893A1/fr

Links

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 coating a substrate with catalyst material.
  • the coating composition in particular a catalyst material, is pressed onto the component or the membrane through a fine-meshed sieve with the aid of a scraper.
  • Screen fabrics made of metal, textile or plastic serve as the printing form.
  • the advantage of screen printing is the high layer thickness that can be applied. In screen printing, a distinction is made 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.
  • Stainless steel mesh is often used for rotary screen printing, which is formed into a hollow cylinder. In the interior of the cylinder, feeds for the coating compound and the doctor blade (wiper) are arranged. Due to the rotary structure, a continuous printing process is possible.
  • the coating material In a cylindrical rotary screen, the coating material is typically fed centrally through a feed via a lateral bore or a central feed channel. As the screen rotates during operation, the coating material collects in front of the scraper. In order to be able to rule out a patchy coating through the screen pores on the substrate, there must always be an excess of coating material in front of the stripper. Typically, the coating material rolls up on the stripper and falls back onto the screen in front of the stripper. This means that part of the coating material must always be used as a precautionary excess during the process, which is not available for the actual coating. This proportion is all the more unfavorable the thinner the layer to be applied and / or the smaller the area to be coated per substrate or component and process step.
  • the object of the invention is to provide a coating device in which even the smallest amounts of coating material are effectively applied and thus costs can be saved.
  • the coating device according to the invention has
  • the coating device comprises an insert within the rotary screen, which reduces the free volume within the rotary screen by at least 50%.
  • the empty volume is advantageously even reduced by more than 80%.
  • a likewise cylindrical insert is suitable for this, which is positioned centrally within the rotary screen.
  • the coating material is supplied via a feed bore or a central feed channel, which is followed by a further channel.
  • the coating material is fed directly to the screen through this additional channel.
  • the further channel is advantageously attached in such a way that it feeds the coating material to the sieve in the vicinity of the scraper. In this way, the coating material reaches the screen directly in front of the stripper during operation of the coating device.
  • the empty volume which is taken up by the coating material introduced as a precaution is thus advantageously only reduced to the further channel and the area directly in front of the scraper.
  • the coating device it is equipped with an additional sheathing of the rotary screen.
  • the coating material used regularly contains solvents that only make it possible to process the coating material. During the operation of the coating, evaporation of the solvent occurs, which initially makes further processing difficult and then prevents it.
  • the casing of the rotary screen according to the invention reduces the free volume outside the coating device in such a way that the evaporation of the solvent is reduced and the processing time of the coating material can thus be significantly extended compared to the prior art.
  • FIG. 1 shows a cross section through a rotary screen drum according to the prior art.
  • FIG. 2 shows a cross section through an embodiment according to the invention
  • FIG. 1 shows a rotary sieve drum, as can be found in the prior art, in cross section.
  • the outer rotating sieve (2) is passed over the film, layer (1) etc. to be coated.
  • the counter roller (5) prevents the film from bending during coating.
  • the material for coating is introduced through a central opening (3) or a channel into the rotary screen drum. A certain excess of material collects during the coating inside the screen in front of the doctor blade (4), and ensures a constant and complete coating. This excess must also be disadvantageous small coating areas.
  • FIG. 2 shows an embodiment of the invention.
  • the screening drum comprises a cylindrical insert (7) which is mounted in the center of the inside of the screening drum.
  • the coating material is fed (3a) via a central channel (3) through the insert to the periphery of the screen.
  • the channel can be configured both as a tubular channel and as a gap over the entire width of the screening drum.
  • only a small volume remains between the insert (7), the screen (2) and the doctor blade (4), so that even a small excess of coating material leads to a complete and uniform coating.
  • the supply of the coating material can therefore take place in a very metered manner and can be minimized overall for a coating process.

Abstract

L'invention concerne un dispositif servant à appliquer un revêtement, ce dispositif comprenant, outre un écran rotatif (2), une ouverture centrale d'alimentation (3) pour amener du matériau de revêtement à l'intérieur de l'écran rotatif, ainsi qu'une racle (4). Par ailleurs, un insert (7) est placé à l'intérieur de l'écran rotatif du dispositif, cet insert réduisant le volume libre à l'intérieur de l'écran rotatif (2) d'au moins 50 %. La quantité de matériau de réserve nécessaire s'en trouve réduite de façon avantageuse, ce qui se traduit par une réduction significative des coûts, en particulier dans le cas de surfaces de revêtement réduites ou de substrats à revêtir en nombre limité.
PCT/DE2002/002934 2001-09-26 2002-08-09 Dispositif pour appliquer un revetement WO2003026893A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP02760116A EP1429924B1 (fr) 2001-09-26 2002-08-09 Dispositif pour appliquer un revetement
DE50213132T DE50213132D1 (de) 2001-09-26 2002-08-09 Beschichtungsvorrichtung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10147601.9 2001-09-26
DE10147601A DE10147601B4 (de) 2001-09-26 2001-09-26 Beschichtungsvorrichtung

Publications (1)

Publication Number Publication Date
WO2003026893A1 true WO2003026893A1 (fr) 2003-04-03

Family

ID=7700447

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2002/002934 WO2003026893A1 (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)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1666163A3 (fr) * 2004-12-03 2006-12-20 Nordson Corporation Tête d'application rotative et installation d'étiquetage
US7771556B2 (en) 2005-07-01 2010-08-10 Nordson Corporation Apparatus and process to apply adhesive during labeling operations
CN101973157A (zh) * 2010-09-28 2011-02-16 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

Families Citing this family (1)

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

Citations (2)

* 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

Family Cites Families (2)

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

Patent Citations (2)

* 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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1666163A3 (fr) * 2004-12-03 2006-12-20 Nordson Corporation Tête d'application rotative et installation d'étiquetage
US7341089B2 (en) 2004-12-03 2008-03-11 Nordson Corporation Rotary application head and labelling installation for application of labels
US7771556B2 (en) 2005-07-01 2010-08-10 Nordson Corporation Apparatus and process to apply adhesive during labeling operations
CN101973157A (zh) * 2010-09-28 2011-02-16 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

Also Published As

Publication number Publication date
DE50213132D1 (de) 2009-01-29
DE10147601B4 (de) 2005-06-09
EP1429924A1 (fr) 2004-06-23
ATE417731T1 (de) 2009-01-15
EP1429924B1 (fr) 2008-12-17
DE10147601A1 (de) 2003-04-24

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