EP0903230B1 - Verfahren und Vorrichtung zur Entfernung von Schablonenbeschichtungen auf Siebdruckformen - Google Patents

Verfahren und Vorrichtung zur Entfernung von Schablonenbeschichtungen auf Siebdruckformen Download PDF

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Publication number
EP0903230B1
EP0903230B1 EP98114323A EP98114323A EP0903230B1 EP 0903230 B1 EP0903230 B1 EP 0903230B1 EP 98114323 A EP98114323 A EP 98114323A EP 98114323 A EP98114323 A EP 98114323A EP 0903230 B1 EP0903230 B1 EP 0903230B1
Authority
EP
European Patent Office
Prior art keywords
ultrasound
carrier
stencil
screen printing
liquid bath
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
EP98114323A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0903230A3 (de
EP0903230A2 (de
Inventor
Harry Dr. Kallweit
Jürgen Stieler
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.)
Kissel & Wolf GmbH
Original Assignee
Kissel & Wolf 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 Kissel & Wolf GmbH filed Critical Kissel & Wolf GmbH
Publication of EP0903230A2 publication Critical patent/EP0903230A2/de
Publication of EP0903230A3 publication Critical patent/EP0903230A3/de
Application granted granted Critical
Publication of EP0903230B1 publication Critical patent/EP0903230B1/de
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
    • B41F35/00—Cleaning arrangements or devices
    • B41F35/003—Cleaning arrangements or devices for screen printers or parts thereof
    • B41F35/005—Cleaning arrangements or devices for screen printers or parts thereof for flat screens

Definitions

  • the invention relates to a method for removing Stencil coatings on screen printing forms, in particular their template carriers. Furthermore, the Invention on a device for performing this Process.
  • the stencil coating is removed at certain intervals , for example around the screen printing form to prepare for the production of another printed image.
  • chemical ones are still used for this Means used, especially when it are hardened stencil coatings.
  • very strong oxidizing agents iodates or periodate, manganese peroxide, osmium tetraoxide, selenium dioxide etc.
  • polyvinyl alcohol or cellulose layers required.
  • Enzymes used. In any case, the wastewater badly affected, so the sewage must be processed in expensive plants.
  • DE-A-28 27 163 describes a process for cleaning cylindrical screen printing forms, in which the Screen printing form immersed vertically in a tank and charged with a cleaning liquid from the inside becomes. To support the cleaning process several ultrasound generators are arranged in the tank, which generate an ultrasonic field in the liquid. At the The printing form screen will also be removed on the outside sprayed with a cleaning liquid and additionally Air blown.
  • JP-A-5 220 460 describes a method in which an object, for example the screen of a printing press, inserted in a liquid bath and an ultrasonic generator so far immersed in the liquid bath is that there is only a small gap between the ultrasonic generator and object remains with the cleaning liquid is filled.
  • Metal masks or screen masks in a liquid bath of printing material such as solder paste
  • by cleaning the mask in a liquid bath immersed and moved back and forth by means of a mechanism as well as an additional ultrasound device is applied.
  • such a procedure is for the decoating of screen printing forms, i.e. the Removal of the stencil coating, not suitable.
  • the invention has for its object a method to provide with the screen printing forms without the Let the use of chemicals be decoated, and at the the outlay on equipment is comparatively low.
  • a another object is to provide a device for Propose implementation of this procedure.
  • the first part of the task is according to the invention solved that the screen printing form with the stencil holder in a liquid bath immersed and by the action of a Ultrasonic device with at least one ultrasonic generator is decoated by this or these is or will be created on the template carrier and remains applied during ultrasound generation or stay.
  • the basic idea of the invention is therefore the use ultrasound in a liquid, especially water bath, in such a way that direct contact between Ultrasonic generator (s) and screen printing form are created.
  • the template holder can then no longer swing through evade so that the full pressure of the ultrasonic generator (s) is taken over. This leads to a Detonation of the stencil coating, the effect is also present on the back. Should this effect not sufficient, the screen printing form after the first stripping process and then again exposed to ultrasound.
  • the ultrasound consists of high-frequency sound waves with frequencies above 16 kHz which are vaporized in the liquid or create gas bubbles after an expansion phase implode. This creates high pressure surges and turbulence and also heat waves that when exposed towards the stencil holder with the appropriate intensity de-coating.
  • the intensity of the ultrasound device can be set so that this the template carrier is not attacked.
  • the advantages over the chemical processes lie in the fact that the use of chemicals completely can be dispensed with, d. H. all related Disadvantages such as pollution, air emissions, fire risk, Risk of chemical burns and the provision of such chemicals fall away here.
  • the detached stencil coatings can by simple filtering or Precipitation from the aqueous medium of the liquid bath be removed and deposited, unless they have been processed can be. Thorough cleaning results even at the crosshairs of the stencil carrier fabric, even if hardened stencil layers available.
  • the ultrasound to act is limited to parts of the template carrier and the ultrasonic device and the template carrier relative and be moved parallel to each other. That way there is the possibility of areas of the template carrier to exclude the effect of ultrasound, so that existing there Stencil adhesives or stencil coatings not attacked become.
  • a device for performing the above is characterized in that the Ultrasound generator abuts on the template carrier or issue. It is clear that this device is relative simply constructed and thus the expenditure on equipment is low is.
  • the installation of the ultrasonic generator (s) can, for example done with the help of a lifting device.
  • the ultrasound device is arranged on a support is that is movable in a horizontal plane, so the entire surface of the template carrier with ultrasound can be applied.
  • the carrier is designed as a girder bridge which is on both sides in the edge area of the liquid pan is guided, the support bridge expediently designed to be movable in one direction and the ultrasound device transverse to it relative to the carrier is suspended.
  • the ultrasound device has several ultrasound generators, also called sonotrodes.
  • the device 1 to be seen in perspective in FIG. 1 has a tub 2 rectangular plan that one flat floor 3 and four vertical side walls 4, 4 ', 5, 5'.
  • the side walls 4, 4 ', 5, 5 ' are shown transparently so that it is visible that a flat screen printing form 6 is inserted into the tub 2 is, which consists of a rectangular printing form frame 7 and one of this spanned template carrier 8 from one fine plastic fabric.
  • the tub 2 is with Filled with water, the mirror of which is marked by line 9 is.
  • the mirror 9 lies above the screen printing form 6, d. H. it is complete and at a distance from Mirror 9 immersed.
  • the tub 2 has two drains 10, 11 in the bottom 3, which in a filter 12 converge. Be in this filter 12 detached coating particles collected so that the drained water is discharged into the sewer system can be.
  • the carrier bridge 15 spans the tub 12 in Y-direction.
  • An ultrasound device hangs on the carrier bridge 15 18 consisting of four in the Y direction side by side arranged ultrasound generators 19, 20, 21, 22 assembled is.
  • the ultrasound device 18 is in the Y direction movably suspended on the carrier bridge 15.
  • the ultrasound generators 19, 20, 21, 22 protrude downwards into the water 9 and lie with their underside Ends on the template carrier 8. This will be particularly by the enlarged view in Fig. 2 clearly.
  • Fig. 2 In the position shown in Fig. 2 is the effect the ultrasonic device 18 so strong that the stencil coating is blown up and in the form of template particles - designated by way of example at 23 - replaced becomes.
  • the template particles 23 are after completion the impact of ultrasound with the water in the drains 10, 11 washed out and caught in the filter 12.

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)
  • Manufacturing Of Printed Wiring (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP98114323A 1997-07-31 1998-07-30 Verfahren und Vorrichtung zur Entfernung von Schablonenbeschichtungen auf Siebdruckformen Expired - Lifetime EP0903230B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19733185 1997-07-31
DE19733185 1997-07-31
DE19747026 1997-10-24
DE19747026 1997-10-24

Publications (3)

Publication Number Publication Date
EP0903230A2 EP0903230A2 (de) 1999-03-24
EP0903230A3 EP0903230A3 (de) 1999-10-27
EP0903230B1 true EP0903230B1 (de) 2002-02-06

Family

ID=26038759

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98114323A Expired - Lifetime EP0903230B1 (de) 1997-07-31 1998-07-30 Verfahren und Vorrichtung zur Entfernung von Schablonenbeschichtungen auf Siebdruckformen

Country Status (6)

Country Link
EP (1) EP0903230B1 (es)
AT (1) ATE212911T1 (es)
DE (1) DE59803003D1 (es)
DK (1) DK0903230T3 (es)
ES (1) ES2172842T3 (es)
PT (1) PT903230E (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10213647B4 (de) * 2002-03-27 2004-08-26 Hermann Leufgens Verfahren zum Reinigen einer Gummituchwaschvorrichtung sowie Reinigungswanne zur Durchführung des Verfahrens
ITBO20100549A1 (it) * 2010-09-10 2012-03-11 Eugenio Curtarello Metodo di eliminazione emulsioni ed immagini residue da matrice di stampa serigrafica
GB2525033A (en) * 2014-04-10 2015-10-14 Asm Assembly Systems Switzerland Gmbh Screen printing apparatus and method
CN103990607A (zh) * 2014-05-30 2014-08-20 苏州倍辰莱电子科技有限公司 钢网清洗装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04351592A (ja) * 1991-05-29 1992-12-07 Masu Shoji:Kk マスクの洗浄装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH426896A (de) * 1963-11-13 1966-12-31 Ernst Greminger Konstruktionsw Verfahren zum Reinigen und Trocknen von ausgedruckten Druckformen und Einrichtung zur Ausübung des Verfahrens
GB1580658A (en) * 1977-07-18 1980-12-03 Whiteley Ltd E Gordon Cleaning apparatus
DE3212916A1 (de) * 1982-04-06 1983-10-13 Markku 02170 Espoo Hakala Verfahren und vorrichtung zum reinigen im seidendruck verwendeter seidentuecher
FR2630665B1 (fr) * 1988-04-28 1990-08-03 Philippe Ets Pierre Dispositif de traitement par immersion dans un bain d'un objet tubulaire presentant une surface exterieure fragile
JPH05220460A (ja) * 1991-10-17 1993-08-31 Sawaa Corp:Kk 超音波洗浄方法及びその装置
JP2879505B2 (ja) * 1993-03-04 1999-04-05 シャープ株式会社 スクリーン版洗浄装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04351592A (ja) * 1991-05-29 1992-12-07 Masu Shoji:Kk マスクの洗浄装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 017, no. 212 (M - 1402) 26 April 1993 (1993-04-26) *
Übersetzung der JP-A-4351592 in die deutsche Sprache *

Also Published As

Publication number Publication date
ES2172842T3 (es) 2002-10-01
EP0903230A3 (de) 1999-10-27
EP0903230A2 (de) 1999-03-24
DE59803003D1 (de) 2002-03-21
ATE212911T1 (de) 2002-02-15
DK0903230T3 (da) 2002-07-01
PT903230E (pt) 2002-07-31

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