EP0885718B1 - Procédé de fabrication d'un écran d'impression et appareil pour sa mise en oeuvre - Google Patents

Procédé de fabrication d'un écran d'impression et appareil pour sa mise en oeuvre Download PDF

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Publication number
EP0885718B1
EP0885718B1 EP98109708A EP98109708A EP0885718B1 EP 0885718 B1 EP0885718 B1 EP 0885718B1 EP 98109708 A EP98109708 A EP 98109708A EP 98109708 A EP98109708 A EP 98109708A EP 0885718 B1 EP0885718 B1 EP 0885718B1
Authority
EP
European Patent Office
Prior art keywords
thermowax
compound
water
group
screen printing
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
EP98109708A
Other languages
German (de)
English (en)
Other versions
EP0885718A2 (fr
EP0885718A3 (fr
Inventor
Günter Wittemann
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7832669&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0885718(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Kissel & Wolf GmbH filed Critical Kissel & Wolf GmbH
Publication of EP0885718A2 publication Critical patent/EP0885718A2/fr
Publication of EP0885718A3 publication Critical patent/EP0885718A3/fr
Application granted granted Critical
Publication of EP0885718B1 publication Critical patent/EP0885718B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/14—Forme preparation for stencil-printing or silk-screen printing
    • B41C1/147—Forme preparation for stencil-printing or silk-screen printing by imagewise deposition of a liquid, e.g. from an ink jet; Chemical perforation by the hardening or solubilizing of the ink impervious coating or sheet

Definitions

  • the invention relates to a method and an apparatus for the production of a screen printing form according to the preamble of claim 1 and claim 13.
  • Flat screen printing forms are used for flat screen printing, which is a template holder made of a fine plastic or Have metal mesh, which on a rectangular Screen printing frame is stretched.
  • a cylindrical printing form is used, in which the template carrier as a cylindrical jacket between extends two end rings.
  • parts of the Stencil carrier by means of a stencil material impermeable to color made. Form the opaque areas then the screen printing stencil.
  • the screen printing stencil is first of all over the template carrier liquid light-sensitive stencil material - mostly in the form of an emulsion - applied.
  • the template material is water-soluble, but can be light-cured and therefore am Stencil carriers can be fixed.
  • the stencil material After drying, the stencil material is placed over a slide exposed.
  • the slide is designed so that a Exposure and thus a light curing in the areas that should be translucent, is avoided. in these areas the stencil material remains water-soluble.
  • the subsequent development process becomes the template carrier exposed at the unexposed areas, i.e. the Stencil material washed out while the exposed Areas remain fixed on the template holder. Possibly can be followed by a hardening.
  • EP-A-0 492 351 discloses a method in which the unexposed Stencil material where it is not on Stencil holder to be fixed with an opaque Barrier layer is covered. This happens in a specially trained inkjet printer, which a holder for the screen printing form and a jet print head which is computer controlled via the screen printing form is proceeded. In doing so, a stencil material water-soluble ink sprayed on.
  • thermal waxes are normally water-insoluble. This has the advantage that it has high storage and dimensional stability to have. At the same time, however, they create difficulties in development, d. H. when removing the barrier layer. The sieves must be soaked beforehand. Moreover can only be developed from the top of the printing form. Both lead to long development times. There were Clogged drainpipes were also observed. Overall the procedure for working on automatic development machines proven unsuitable.
  • the invention is therefore based on the object of a method to provide with which a screen printing form can be made leaves, the sharp-edged and true-to-size print images is able to produce, and that because of its easy handling and fast development time can also be used on automatic development machines. Another task is to find a suitable one To design the device.
  • the first object is achieved in that a water-removable thermal wax is used which is expediently at least one binder with neutralizable functional groups, a neutralizing agent, an emulsifier and a water-soluble Plasticizer includes.
  • a composition ensures a dissolvability with water while preserving the other advantageous properties of using a Thermal wax.
  • thermal wax is far too pull. This includes such compositions that show waxy behavior, i.e. at ambient temperature are solid, but at elevated temperatures melt and relatively little above the melting temperature are low viscosity and non-stringy.
  • the dissolvability of the thermal wax makes removal easier the barrier layer and also the thermal wax itself essential. Development time can be reduced drastically so that the method is mainly for use on automatic development machines.
  • the development can be used from both sides of the screen printing form and without using of chemicals. The latter is for environmental reasons advantageous. It was surprisingly found that storage and dimensional stability for use screen printing, the existing ones are completely sufficient So fears were unfounded.
  • the binder as an appropriate part of the thermal wax in the present method according to the invention can be selected from the group, the polyester resins, Natural resins, natural oils, waxes and carboxylic acids with 12 to 26 Includes carbon atoms. These components of the group of Binders must meet the criterion of neutralization their functional groups, e.g. Acid groups, is guaranteed.
  • the acid number that the determination the content of free organic acids in fats and oils and in solutions and which is the number of mg KOH indicates the amount used to neutralize 1 g sample is 40 according to an embodiment of the invention up to 300.
  • neutralizing agent which is capable of neutralizing the above binders is, such means selected in particular from the group can be the primary, secondary and tertiary Amines, KOH, NaOH, ammonia and sodium carbonate.
  • the thermal wax according to the invention advantageously comprises furthermore at least one emulsifier, which after another Embodiment of the invention e.g. a fatty acid sulfonate, a anionic fatty alcohol sulfonate, a polyglycol ether or Castor oil can represent.
  • emulsifier e.g. a fatty acid sulfonate, a anionic fatty alcohol sulfonate, a polyglycol ether or Castor oil can represent.
  • the water-soluble preferably present in the thermal wax Plasticizers can be a polyglycol, phosphoric acid ester or Be glycerin.
  • the thermal wax in the method according to the invention have other components.
  • the thermal wax comprises a temperature protection agent, e.g. a phenolic antioxidant, and / or a light stabilizer, e.g. Benzophenone derivatives, benzotriazole derivatives, Cinnamic acid derivatives, radical scavengers of the HALS type (hindered amine light stabilizers) or titanium dioxide.
  • a temperature protection agent e.g. a phenolic antioxidant, and / or a light stabilizer, e.g. Benzophenone derivatives, benzotriazole derivatives, Cinnamic acid derivatives, radical scavengers of the HALS type (hindered amine light stabilizers) or titanium dioxide.
  • This Agents protect the thermal wax from high temperature and / or Exposure to light by eliminating radicals and radiation energies are absorbed and converted.
  • the thermal wax can be dyes or pigments.
  • Emulan OC fatty alcohol ethoxylate
  • Duasyn Black A-RG VP 280 metal complex dye
  • Irganox 1010 phenolic-based antioxidants

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Printing Methods (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Manufacturing Of Printed Wiring (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Claims (13)

  1. Procédé de production d'un écran d'impression pour sérigraphie comprenant un support de pochoir sur lequel est appliqué le matériau pour pochoir pouvant être fixé, suite à quoi, sur la partie du matériau pour pochoir qui ne doit pas être fixée est appliquée une couche d'arrêt en thermocire imperméable à la lumière à l'aide d'une imprimante à jet, le matériau pour pochoir non masqué par la couche d'arrêt est fixé et le matériau pour pochoir restant est enlevé avec la couche d'arrêt, caractérisé en ce que l'on utilise une thermocire pouvant être retirée à l'aide d'eau.
  2. Procédé selon la revendication 1, caractérisé en ce que la thermocire comprend au moins un liant possédant des groupes fonctionnels aptes à la neutralisation, un agent de neutralisation, un émulsifiant et un plastifiant soluble dans l'eau.
  3. Procédé selon la revendication 2, caractérisé en ce que le liant représente au moins un composé qui est sélectionné parmi le groupe composé de résines de polyester, de résines naturelles, d'huiles naturelles, de cires et d'acides / esters carboxyliques comportant 12 à 26 atomes de carbone.
  4. Procédé selon la revendication 2 ou 3, caractérisé en ce que le liant présente un indice d'acidité compris entre 40 et 300 mg KOH/g.
  5. Procédé selon l'une des revendications 2 à 4, caractérisé en ce que l'agent de neutralisation représente au moins un composé qui est sélectionné parmi le groupe composé d'amines primaires, d'amines secondaires, d'amines tertiaires, d'hydroxyde de potassium, d'hydroxyde de sodium, d'ammoniac et de carbonate de sodium.
  6. Procédé selon l'une des revendications 2 à 5, caractérisé en ce que l'émulsifiant représente au moins un composé qui est sélectionné parmi le groupe composé de sulfonates d'acide gras, de sulfonates d'alcools gras anioniques, de polyglycoléthers et d'huile de ricin.
  7. Procédé selon l'une des revendications 2 à 6, caractérisé en ce que le plastifiant soluble dans l'eau représente au moins un composé qui est sélectionné parmi le groupe composé de polyglycols, d'esters d'acide phosphorique et de glycérine.
  8. Procédé selon l'une des revendications 1 à 7, caractérisé en ce que la thermocire comprend en outre un agent de protection thermique.
  9. Procédé selon la revendication 8, caractérisé en ce que l'agent de protection thermique est un antioxydant phénolique.
  10. Procédé selon l'une des revendications 1 à 9, caractérisé en ce que la thermocire comprend en outre un agent photo-protecteur.
  11. Procédé selon la revendication 10, caractérisé en ce que l'agent photo-protecteur représente au moins un composé sélectionné parmi le groupe composé de dérivés de benzophénone, de dérivés de benzotriazole, de dérivés de l'acide cinnamique, de capteurs de radicaux du type HALS (hindered amine light stabilizers) ou de dioxyde de titane.
  12. Procédé selon l'une des revendications 1 à 11, caractérisé en ce que la thermocire comprend en outre un ou plusieurs colorants ou pigments.
  13. Appareil de réalisation du procédé selon l'une des revendications 1 à 12, comprenant une imprimante à jet équipée d'un logement pour un écran d'impression pour sérigraphie, un réservoir contenant une thermocire, qui peut être appliquée au moyen de l'imprimante à jet, et un dispositif de chauffage permettant de fluidifier la thermocire, caractérisé en ce que le réservoir contient une thermocire pouvant être enlevée à l'aide d'eau, telle qu'utilisée dans le procédé selon l'une des revendications 1 à 12.
EP98109708A 1997-06-17 1998-05-28 Procédé de fabrication d'un écran d'impression et appareil pour sa mise en oeuvre Expired - Lifetime EP0885718B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19725488A DE19725488A1 (de) 1997-06-17 1997-06-17 Verfahren zur Herstellung einer Siebdruckform und Vorrichtung zur Durchführung des Verfahrens
DE19725488 1997-06-17

Publications (3)

Publication Number Publication Date
EP0885718A2 EP0885718A2 (fr) 1998-12-23
EP0885718A3 EP0885718A3 (fr) 1999-03-03
EP0885718B1 true EP0885718B1 (fr) 2001-10-17

Family

ID=7832669

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98109708A Expired - Lifetime EP0885718B1 (fr) 1997-06-17 1998-05-28 Procédé de fabrication d'un écran d'impression et appareil pour sa mise en oeuvre

Country Status (7)

Country Link
EP (1) EP0885718B1 (fr)
AT (1) ATE207012T1 (fr)
DE (2) DE19725488A1 (fr)
DK (1) DK0885718T3 (fr)
ES (1) ES2163828T3 (fr)
GR (1) GR3037082T3 (fr)
PT (1) PT885718E (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19914323A1 (de) * 1999-03-30 2000-10-26 Kesper Druckwalzen Gmbh Verfahren und Vorrichtung zur Herstellung eines Druckwerkzeugs
CN104742493A (zh) * 2013-12-27 2015-07-01 乐凯华光印刷科技有限公司 一种丝网印刷版及其制造方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5053079A (en) * 1990-05-23 1991-10-01 Coates Electrographics Limited Dispersed pigmented hot melt ink
US5354368A (en) * 1993-05-04 1994-10-11 Markem Corporation Hot melt jet ink composition

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5156089A (en) * 1990-12-17 1992-10-20 Gerber Scientific Products, Inc. Method and apparatus for making a painting screen using an ink jet printer for printing a graphic on the screen emulsion
US5466653A (en) * 1994-06-29 1995-11-14 E. I. Du Pont De Nemours And Company Method for preparing negative-working wash-off relief images and non-photosensitive elements for use therein
US5464729A (en) * 1994-11-07 1995-11-07 Hoebener; William H. Process for creating an image on film used in screen printing
CH690030A5 (de) * 1995-01-26 2000-03-31 Fingraf Ag Verfahren und Vorrichtung zur Herstellung einer Druckschablone.
GB2315076A (en) * 1996-07-05 1998-01-21 Sericol Ltd A phase change ink

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5053079A (en) * 1990-05-23 1991-10-01 Coates Electrographics Limited Dispersed pigmented hot melt ink
US5354368A (en) * 1993-05-04 1994-10-11 Markem Corporation Hot melt jet ink composition

Also Published As

Publication number Publication date
GR3037082T3 (en) 2002-01-31
EP0885718A2 (fr) 1998-12-23
EP0885718A3 (fr) 1999-03-03
DE59801742D1 (de) 2001-11-22
ES2163828T3 (es) 2002-02-01
ATE207012T1 (de) 2001-11-15
DE19725488A1 (de) 1999-01-21
DK0885718T3 (da) 2002-02-04
PT885718E (pt) 2002-04-29

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