EP1417099B1 - Procede de production d'un pochoir pour serigraphie - Google Patents

Procede de production d'un pochoir pour serigraphie Download PDF

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Publication number
EP1417099B1
EP1417099B1 EP02767282A EP02767282A EP1417099B1 EP 1417099 B1 EP1417099 B1 EP 1417099B1 EP 02767282 A EP02767282 A EP 02767282A EP 02767282 A EP02767282 A EP 02767282A EP 1417099 B1 EP1417099 B1 EP 1417099B1
Authority
EP
European Patent Office
Prior art keywords
coating
laser
printing
cross
linking
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
EP02767282A
Other languages
German (de)
English (en)
Other versions
EP1417099A1 (fr
Inventor
Werner Kunz
Karl Dennler
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.)
Sefar AG
Original Assignee
Sefar AG
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
Priority claimed from DE10233767A external-priority patent/DE10233767A1/de
Application filed by Sefar AG filed Critical Sefar AG
Publication of EP1417099A1 publication Critical patent/EP1417099A1/fr
Application granted granted Critical
Publication of EP1417099B1 publication Critical patent/EP1417099B1/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
    • 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
    • B41C1/145—Forme preparation for stencil-printing or silk-screen printing by perforation using an energetic radiation beam, e.g. a laser
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N1/00—Printing plates or foils; Materials therefor
    • B41N1/24—Stencils; Stencil materials; Carriers therefor

Definitions

  • the invention relates to a method for producing a screen printing stencil, in which a carrier surface is coated, according to the preamble of claim 1.
  • the invention covers a corresponding coating system.
  • US-A-3 696 742 describes a process for exclusively processing fabrics of metal wires coated with thermoplastic, uncrosslinked materials - such as polymethyl methacrylate (PMMA), polychlorotrifluoroethylene (PCTFE), polyoxymethylene (POM) - without laser light sensitive additives.
  • thermoplastic, uncrosslinked materials such as polymethyl methacrylate (PMMA), polychlorotrifluoroethylene (PCTFE), polyoxymethylene (POM) - without laser light sensitive additives.
  • metal powder is used to increase the thermal conductivity of the coating material.
  • EP 1 080 883 A2 describes a material which is used for the production of relief printing plates especially for flexographic printing. However, this material can be used in this modification - other modifications are not described - are not used for the production of stencil printing stencils, in particular with regard to the consistency and the concentration of the additives. When using laser-engravable stencils, other printing techniques must be used.
  • JP-A-7 104 462 discloses a UV-curable color filter system comprising a photosensitive emulsion of polyvinyl alcohol, carbon black, blue phthalocyanines, yellow disazo dye.
  • the stencil production corresponds to the principle known from the prior art.
  • the prior art also shows the processing of plastics with laser beams, which are mixed with special additives such as iron oxide or soot.
  • the inventor has set the goal to improve the production of printing stencils and the application of materials to a printing fabric by means of appropriate coating process and at the same time to make laser engravable.
  • For screen printing it is assumed that - since it is a through-printing process - the coating can or must be completely removed where the printed image is to be produced.
  • the tissue itself must not be destroyed.
  • a coating paste of laser-engravable material is applied in uncrosslinked state on a screen printing fabric and then subjected to a curing or crosslinking process, wherein the coating is processed or ablated on the print fabric by means of laser beams for imaging.
  • the application of the coating paste is indirect and can be done both before and after tensioning the screen printing fabric on the screen frame.
  • the coating paste of laser-engravable material is applied according to the invention to a dimensionally stable transfer film and transferred from the latter in the uncrosslinked state.
  • the crosslinking process can therefore also be carried out before and after the stretching of this fabric.
  • An ablation of the coating for imaging - as in the present invention - does not take place in the relevant state of the screen printing technology.
  • the coating method according to the invention is adapted to the requirements of screen printing and is divided into a primary and a secondary process.
  • the coating of the dimensionally stable transfer film mentioned first takes place by a suitable application method, for example by means of a roll or air doctor blade, anilox roll application or spray application.
  • the secondary process involves transferring the coating paste in the uncrosslinked state from the film to the screen printing fabric followed by a curing or crosslinking process.
  • the application of the coating paste on a stencil for screen printing has proven to be particularly favorable.
  • the coating of the fabric web should be performed over the entire surface or partially.
  • Full-area means in this case that the carrier material, regardless of the template image size, is completely coated, while in a partial coating, the coating surface is adapted to the later stencil or image size.
  • the coating on the screen printing frame is processed by means of laser beams in such a way that the material to be printed can be printed as before.
  • the filming, exposure and washout operations of the stencil are eliminated and replaced by laser engraving. Since a particularly smooth surface of the coating is required in screen printing, the coating process must be adapted or selected accordingly.
  • the coating systems are modified in a spreadable form by solvents or dispersants or by the laser-sensitive additives themselves, even in the appropriate concentration.
  • additives are preferably carbon black or iron oxides.

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Optics & Photonics (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Printing Methods (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Non-Metallic Protective Coatings For Printed Circuits (AREA)

Claims (11)

  1. Procédé de fabrication d'un pochoir pour sérigraphie, dans lequel une pâte d'enduction est appliqué sur un tissu d'impression et est ensuite soumise à un processus de durcissement ou de réticulation, l'enduction sur le tissu d'impression étant ensuite soumise à un usinage par utilisation de rayons laser,
    caractérisé en ce que
    la pâte d'enduction est formé d'un matériau pouvant être gravé au laser et est appliquée sur une feuille de transfert dimensionnellement stable et est transférée, à l'état non réticulé, de la feuille de transfert au tissu d'impression, et est gravée au laser sur celui-ci en utilisant des rayons laser.
  2. Procédé selon la revendication 1, caractérisé en ce que la pâte d'enduction est appliquée sur le tissu d'impression pour l'impression sérigraphique, après avoir effectué le montage sous tension mécanique sur un cadre d'impression sérigraphique.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'enduction est effectuée sur toute la surface.
  4. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'enduction est effectuée de façon partielle.
  5. Procédé selon au moins l'une des revendications précédentes, caractérisé par l'utilisation d'un système d'enduction, présentant des systèmes à deux composants, réticulant sous l'effet de la chaleur :
    (a) des polymères de base, tel que du polyuréthanne (PUR)/isocyanate ou un caoutchouc au silicone ;
    (b) des additifs absorbant la lumière laser ;
    (c) des solvants et/ou des dispersants.
  6. Procédé selon au moins l'une des revendications 1 à 4, caractérisé par l'utilisation d'un système d'enduction présentant des systèmes bi-composants réticulant à froid :
    (a) des polymères de base, tel que du caoutchouc au silicone ;
    (b) des additifs absorbant la lumière laser ;
    (c) des solvants et/ou des dispersants.
  7. Procédé selon au moins l'une des revendications 1 à 4, caractérisé par l'utilisation d'un système d'enduction présentant des systèmes à monocomposants réticulant à froid :
    (a) des polymères de base, tel que du caoutchouc au silicone ;
    (b) des additifs absorbant la lumière laser ;
    (c) des solvants et/ou des dispersants.
  8. Procédé selon au moins l'une des revendications 1 à 4, caractérisé par l'utilisation d'un système d'enduction présentant des systèmes monocomposants réticulant sous l'effet de la chaleur :
    (a) des polymères de base, tel que du polyuréthanne (PUR) ;
    (b) des additifs absorbant la lumière laser ;
    (c) des solvants et/ou des dispersants.
  9. Procédé selon au moins l'une des revendications 1 à 4, caractérisé par l'utilisation d'un système d'enduction présentant des systèmes réticulant sous l'effet des UV :
    (a) des émulsions photosensibles à base d'alcool polyvinylique (PVAL) ;
    (b) des additifs absorbant la lumière laser ;
    (c) des solvants et/ou des dispersants.
  10. Procédé selon au moins l'une des revendications 5 à 9, caractérisé en ce que les additifs sont de la suie ou des oxydes de fer.
  11. Procédé selon au moins l'une des revendications 5 à 9, caractérisé en ce que les additifs appartiennent au groupe des benzophénones.
EP02767282A 2001-08-14 2002-07-31 Procede de production d'un pochoir pour serigraphie Expired - Lifetime EP1417099B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10138816 2001-08-14
DE10138816 2001-08-14
DE10233767A DE10233767A1 (de) 2001-08-14 2002-07-25 Verfahren zum Herstellen einer Druckschablone für den Siebdruck sowie Beschichtungssystem
DE10233767 2002-07-25
PCT/EP2002/008513 WO2003016055A1 (fr) 2001-08-14 2002-07-31 Procede de production d'un pochoir pour serigraphie, et systeme de revetement y relatif

Publications (2)

Publication Number Publication Date
EP1417099A1 EP1417099A1 (fr) 2004-05-12
EP1417099B1 true EP1417099B1 (fr) 2006-11-15

Family

ID=26009898

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02767282A Expired - Lifetime EP1417099B1 (fr) 2001-08-14 2002-07-31 Procede de production d'un pochoir pour serigraphie

Country Status (7)

Country Link
EP (1) EP1417099B1 (fr)
AT (1) ATE345214T1 (fr)
DE (1) DE50208721D1 (fr)
DK (1) DK1417099T3 (fr)
ES (1) ES2276956T3 (fr)
HK (1) HK1067591A1 (fr)
WO (1) WO2003016055A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3696742A (en) * 1969-10-06 1972-10-10 Monsanto Res Corp Method of making a stencil for screen-printing using a laser beam
NL8701176A (nl) * 1987-05-15 1988-12-01 Stork Screens Bv Dessineerdeklaag voor een metalen zeefdruksjabloon; zeefdruksjabloon voorzien van een dessineerdeklaag en werkwijze voor het aanbrengen van een dessineerpatroon in een deklaag welke aanwezig is op een metalen zeefdruksjabloon.
EP0658812B1 (fr) * 1992-10-21 2000-05-24 Schablonentechnik Kufstein Aktiengesellschaft Appareil rotatif pour l'exposition d'un écran de sérigraphie cylindrique
DE19942216C2 (de) 1999-09-03 2003-04-24 Basf Drucksysteme Gmbh Siliconkautschuk und eisenhaltige, anorganische Feststoffe und/oder Ruß enthaltendes Aufzeichnungsmaterial zur Herstellung von Reliefdruckplatten mittels Lasergravur, Verfahren zur Herstellung von Reliefdruckplatten sowie damit hergestellte Reliefdruckplatte

Also Published As

Publication number Publication date
WO2003016055A1 (fr) 2003-02-27
ES2276956T3 (es) 2007-07-01
EP1417099A1 (fr) 2004-05-12
HK1067591A1 (en) 2005-04-15
ATE345214T1 (de) 2006-12-15
DK1417099T3 (da) 2007-03-19
DE50208721D1 (de) 2006-12-28

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