EP2151324A2 - Procédé de fabrication d'un moule d'impression rotatif pour l'utilisation dans un procédé d'impression par rotation de rouleaux - Google Patents

Procédé de fabrication d'un moule d'impression rotatif pour l'utilisation dans un procédé d'impression par rotation de rouleaux Download PDF

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Publication number
EP2151324A2
EP2151324A2 EP09009725A EP09009725A EP2151324A2 EP 2151324 A2 EP2151324 A2 EP 2151324A2 EP 09009725 A EP09009725 A EP 09009725A EP 09009725 A EP09009725 A EP 09009725A EP 2151324 A2 EP2151324 A2 EP 2151324A2
Authority
EP
European Patent Office
Prior art keywords
composite
layer
composite layer
coating
composite 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.)
Granted
Application number
EP09009725A
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German (de)
English (en)
Other versions
EP2151324B1 (fr
EP2151324A3 (fr
Inventor
Yvonne Bohne
Christian Dr. Elsner
Bernd Prof. Dr. Rauschenbach
Claudia Dr Jahn
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.)
Prinovis Dresden & Co KG GmbH
Leibniz Institut fuer Oberflachenmodifizierung eV
Original Assignee
Prinovis Dresden & Co KG GmbH
Leibniz Institut fuer Oberflachenmodifizierung eV
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 Prinovis Dresden & Co KG GmbH, Leibniz Institut fuer Oberflachenmodifizierung eV filed Critical Prinovis Dresden & Co KG GmbH
Priority to PL09009725T priority Critical patent/PL2151324T3/pl
Publication of EP2151324A2 publication Critical patent/EP2151324A2/fr
Publication of EP2151324A3 publication Critical patent/EP2151324A3/fr
Application granted granted Critical
Publication of EP2151324B1 publication Critical patent/EP2151324B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B41C1/02—Engraving; Heads therefor
    • B41C1/04—Engraving; Heads therefor using heads controlled by an electric information signal
    • B41C1/05—Heat-generating engraving heads, e.g. laser beam, electron beam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/18—Curved printing formes or printing cylinders
    • 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
    • B41N1/16—Curved printing plates, especially cylinders
    • B41N1/22—Curved printing plates, especially cylinders made of other substances

Definitions

  • the invention relates to a method for producing a rotary printing form for use in a web-fed rotary printing process with the method steps of claim 1. Furthermore, the invention relates to a gravure mold, which is suitable for use in the method according to claim 1 and the use of a composite as a coating material of a gravure form with cylindrical mold base body, which is thus used in a web-fed rotary printing process.
  • Rotogravure in contrast to other printing processes such as flat, screen, digital or screen printing, is suitable for the production of predominantly high-stock products.
  • Characteristic of the rotogravure printing is that the individual points of the printed image are recessed in the surface of the plate cylinder. They are referred to as cups and result from the print image transfer by means of engraving or etching. During the printing process, depending on their volume, they take up the appropriate amount of printing ink and apply it punctiform to the substrate.
  • the already engraved engraved copper layer is additionally provided with a hard chrome plating, to which galvanic application methods are used.
  • Such "classic" metal coated rotary printing plates may be reused after printing by removing the thin copper coating to the surface of the steel cylinder.
  • a disadvantage of these classic metal-coated rotary printing plates is in particular that on the one hand a large number of process steps with high time and cost and on the other environmentally polluting galvanic coating steps are required.
  • WO 02/40272 a method for the production of screening cups in preferably rotationally symmetrical basic body by means of time-modulated, in particular pulsed laser radiation.
  • a Abtragsunterstützungstik is applied, are introduced through the sieve cups by means of laser radiation in the upper layer areas by material ablation. Subsequently, this erosion assist layer is removed with the aim of obtaining burr-free screen wells.
  • a method and apparatus for gravure printing by means of a erasable and reusable gravure printing form are known.
  • the gravure printing forms shown there are formed as a solid cylinder, as a tubular or thin-walled sleeve on which a basic grid is engraved analogously to a conventional gravure mold in copper.
  • a chromium layer and then a hard coating such as diamond-like carbon, titanium nitrite or tungsten carbide is first applied to the layer engraved with the basic grid.
  • anilox rollers which carry thermally sprayed ceramic coatings, in which a gravure gravure grid is engraved by means of laser.
  • the imaging takes place by thermal ablation by means of a pixel transmission device, by imagewise filling material is removed from the wells.
  • the known gravure form undergoes a deletion process in which the filler material and residual color from the printing process are wholly or partially removed by laser. Subsequently, the basic grid of the gravure mold can be refilled again, whereby it is prepared for the imaging with a new print job.
  • EP 1 410 924 a manufacturing method for a gravure printing is known in which only a wear-resistant layer is applied according to the desired application to the cylindrical printing plate.
  • This wear-resistant layer forms the engraving surface of the printing form and may consist of a hard material, composite material or metal. Different coating methods are mentioned. Cups for receiving the ink are formed by mechanical engraving, laser engraving or etching. For reuse, it is intended to remove the imaged wear-resistant layer chemically, electrochemically or mechanically after the printing process.
  • the invention has for its object to provide a manufacturing method of a rotary printing form or a gravure cylinder or a gravure form, which allows a high-speed cell production by laser, the laser engraving result compared to the known methods is significantly improved already engraved rotative intaglio printing plates for a new imaging can be "deleted" again, the deletion process should be carried out in a simple manner and complicated and environmentally harmful processes within a printing company for the preparation and preparation of rotary printing plates avoided or greatly simplified.
  • a coating material curing by polymerization after the coating process composite material comprising at least one organic binder is applied with nano and / or microparticles contained therein.
  • the wells formed with laser beams are clearly contour sharper than in the prior art and thus suitable for a much better printing result guarantee.
  • the material is sufficiently hard, tensile and compressive strength, elongation at break, modulus of elasticity and wear resistance are suitable to withstand the high mechanical stresses associated with a high speed web-fed rotary printing process. The heat resistance is sufficient for such loads.
  • the claimed composite layer advantageously has a low coefficient of expansion, which has an advantageous effect on its bonding to the substrate.
  • the radiation-curable micro- or nanoparticles have an advantageous effect in terms of abrasion resistance of the composite material.
  • optical and thermal absorption, dissipation and / or emission properties of such a layer can be favorably influenced by the incorporation of micro- or nanoparticles, i. the above-mentioned flow processes and smearing effects, which usually occur during laser engraving of other plastic layers, are so greatly reduced that the lasered cell structure is formed much sharper than is possible with other known coatings made of plastic.
  • the composite layers mentioned are not only advantageous with regard to cup formation by means of a laser, they also have other advantages with respect to deletion of the cup structure.
  • the layers are easily recoated, i. a deletion process can be performed without having to completely detach a composite layer from its backing.
  • Existing structures can be erased by "over-lasers" and the surface re-coated in the required layer thickness with composite material.
  • the composite filling the cells of the structuring composite material be exposed by laser radiation and then completely refilled. This will “delete” the structure and provide it for refining after refilling. Both the "over-laser” of the existing structures, as well as the exposure and subsequent refilling can also be done only on sections of the molding, so it is possible to erase a printing cylinder only partially or to provide new image information.
  • the composite material in principle, it is also possible to coat the composite material with a non-metallic barrier layer after imaging, which has a greater hardness and / or a greater solvent resistance than the coating material itself.
  • a non-metallic barrier layer after imaging, which has a greater hardness and / or a greater solvent resistance than the coating material itself.
  • the durability of the barrier layer on the surface of the composite layer is improved by the microparticles and nanoparticles.
  • the barrier layer comprises silasane or SiOx compounds.
  • the provision of carbon and / or nitrogen atoms in the barrier layer has also proved to be advantageous.
  • the cylinder jacket surface can be provided in a conventional manner with a basic structure.
  • the composite material on a ballard skin can be applied on a ballard skin.
  • Such a ballard skin together with the composite layer applied to it, can be detached from the base cylinder without negatively affecting the structure of the base cylinder.
  • a ballard skin is produced by electroplating on so-called ground copper an approximately 0.1 mm thick copper skin, which can be provided with a surface structure. After the print run, the ballard skin can be removed from the printing cylinder.
  • a non-metallic intermediate layer eg a primer, can fulfill the detachment function.
  • the layer thickness of the composite layer can be between 15 and 150 ⁇ m. Further advantageous compounds and / or elements of the composite layer can be found in claims 10-12.
  • the laser engraving i. the impressing of wells by means of laser radiation can be carried out particularly well with pulsed lasers.
  • the depth and shape of the wells in the composite layer can be adjusted by the number of pulses per spot and the energy deposited by the laser beam. Since the composite layer has far more favorable optical and thermal absorption properties compared to other plastic coatings, any desired cell shape can be engraved by laser insertion, for example square, triangular, round. Different depth profiles on a basic shaped body can also be produced, e.g. in step shape, in the form of a Gauss curve or wedge-shaped.
  • the Be firmungsablauf the layer can be done either locally individually or by a raster method. In the usual way, the laser beams can be directed via scanners or multiple axis systems onto the composite layer to be imaged.
  • the cup shape can advantageously take place via beam shaping of the laser beam.
  • beam shaping can be realized by diaphragms, masks and / or other optical elements.
  • Such a laser-registered structuring can be erased by laser ablation and the composite layer, which is then thinned in the ablated areas, re-coated, whereby coating material can be saved.
  • the refilling of the partially removed wells leads to a closed composite surface layer.
  • the time saving achievable in this case represents a significant advantage of the method according to the invention.
  • an applied composite layer Before being imaged by laser engraving, an applied composite layer can be smoothed mechanically or also by laser action, which leads to a further improvement of the printing result.
  • the claims 9 - 15 relate to a gravure printing form, which can be prepared by the method of claims 1-8.
  • the imageable surface formed by a composite layer has, as a first component, the following compounds: acrylates of radically UV-curing systems, cycloaliphatic epoxides, aliphatic epoxides and compounds of cationically UV-curing systems. Such compounds for the composite layer lead to particularly advantageous laser engraving results with highly definable cup shape.
  • the composite layer comprises several multifunctional radiation-curable monomers, oligomers or polymers which may comprise orthogonal functional groups.
  • the particles of the nanocomposite layer are micro- or nanoscale metal or semimetal oxides or oxides of transition metals or mixed oxides in powder form or organometallic particles. Compounds of Al 2 O 3 , SiO 2 , ZrO 2 , TiO 2 have proved to be particularly advantageous for the nanocomposite layer.
  • the compounds of the composite layer may be provided with an organophilic envelope. Further advantages with regard to different compounds in different proportions emerge from claim 11.
  • the layer thickness of the composite layer can be between one nanometer as the theoretical lower limit and one millimeter.
  • the hardness of the composite layer should be greater than 200 N / mm 2 (Marten hardness).
  • the cup structure of the composite layer should be chosen so that the depth of the wells is less than the thickness of the composite layer.
  • the composite layer may carry a quenching layer that completely overlaps the wells.
  • rotary printing plate 1 consists essentially of a cylindrical mold base body with structuring 2 and a non-metallic coating material, which can be applied to the surface, ie the cylinder surface 4 of the mold body 2.
  • the coating material is according to FIG. 2 from a composite material 3 and thus forms a composite layer 33.
  • the composite material 3 comprises an acrylate-based matrix 5 and substantially uniformly distributed nanoparticles 6, which - as in FIG. 2 shown schematically - very different Can have shapes and sizes.
  • a non-metallic barrier layer 8 is applied, which has a greater hardness than the composite material 3.
  • a laser engraving method is used.
  • the cell structure 9 can be seen in drawing figure 2.
  • the surface 4 of the molded basic body 2 can be provided with a basic structure 20 on which a ballard skin 21 is applied, which ultimately carries the composite layer 33.
  • a ballard skin 21 prior to application of the composite layer 33 is merely an option intended to facilitate complete detachment of a coating from the mold base body 2.
  • ballast skin 21 applied to the mold base body 2 may be provided with a structuring.
  • the composite layer 33 is arranged without ballard skin directly on the mold base body 2.
  • the cylinder jacket surface 4 is provided with an eg web-like basic structure 20, which increases the contact surface.
  • the cell structure 9 can have different shapes, depths and / or dimensions.
  • the composite layer 33 can be formed from a coating material 3 which can comprise a very wide variety of chemical compositions.
  • the compositions may be selected by the person skilled in the art within the ranges indicated to form a scratch / abrasion and adhesion resistant and solvent resistant coating, which - as far as the core idea of the invention is concerned - ensures almost residue-free laser engravability.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
EP09009725.4A 2008-07-28 2009-07-28 Procédé de fabrication d'un moule d'impression rotatif pour l'utilisation dans un procédé d'impression par rotation de rouleaux Active EP2151324B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09009725T PL2151324T3 (pl) 2008-07-28 2009-07-28 Sposób wytwarzania rotacyjnej formy drukarskiej do stosowania w procesie rotacyjnego drukowania z roli

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008035203A DE102008035203B4 (de) 2008-07-28 2008-07-28 Verfahren zum Löschen und Neubebildern eines Druckzylinders

Publications (3)

Publication Number Publication Date
EP2151324A2 true EP2151324A2 (fr) 2010-02-10
EP2151324A3 EP2151324A3 (fr) 2011-02-23
EP2151324B1 EP2151324B1 (fr) 2014-03-19

Family

ID=41127639

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09009725.4A Active EP2151324B1 (fr) 2008-07-28 2009-07-28 Procédé de fabrication d'un moule d'impression rotatif pour l'utilisation dans un procédé d'impression par rotation de rouleaux

Country Status (5)

Country Link
EP (1) EP2151324B1 (fr)
DE (1) DE102008035203B4 (fr)
DK (1) DK2151324T3 (fr)
ES (1) ES2459346T3 (fr)
PL (1) PL2151324T3 (fr)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3109096A1 (de) 1980-03-11 1981-12-24 Crosfield Electronics Ltd., London Intaglio-druckteil, verfahren zu seiner herstellung und verfahren zur herstellung einer gravierten intaglio-druckoberflaeche
EP0584857A2 (fr) 1992-08-27 1994-03-02 Metallgesellschaft Ag Cylindre à impression en creux
DE19631469C1 (de) 1996-08-03 1998-02-19 Roland Man Druckmasch Verfahren und Vorrichtung zur Durchführung von Druckaufträgen
JP2000015770A (ja) 1998-06-30 2000-01-18 Think Laboratory Co Ltd 印刷版の再利用方法
WO2002040272A1 (fr) 2000-11-15 2002-05-23 Mdc Max Daetwyler Ag Procede de realisation de godets de trame dans une plaque d'heliogravure, et corps de base pouvant etre utilise dans ce procede
DE10126264A1 (de) 2001-05-29 2002-12-05 Giesecke & Devrient Gmbh Tiefdruckzylinder, Verfahren zum Herstellen eines Tiefdruckzylinders und Verfahren zum Recyceln eines Tiefdruckzylinders
EP1410924A1 (fr) 2002-10-17 2004-04-21 Hell Gravure Systems GmbH Procédé de production d'une forme d'impression pour la rotogravure, forme d'impression pour la rotogravure et utilisation de cette forme
EP1568490A1 (fr) 2004-02-27 2005-08-31 Hell Gravure Systems GmbH Procédé de gravure directe des cellules pour recevoir l'encre en rotogravure
DE102005052156A1 (de) 2005-11-02 2007-05-03 Man Roland Druckmaschinen Ag Verfahren und Vorrichtung für den Tiefdruck mittels einer lösch- und wiederverwendbaren Tiefdruckform
DE102005052157A1 (de) 2005-11-02 2007-05-03 Man Roland Druckmaschinen Ag Verfahren und Vorrichtung zur Bebilderung einer löschbaren und wieder verwendbaren Tiefdruckform

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US4093684A (en) * 1973-10-25 1978-06-06 Monsanto Research Corporation Solid solderable polyurethane data signal recording medium
GB1465364A (en) * 1974-02-28 1977-02-23 Crosfield Electronics Ltd Preparation of printing surfaces
JPS54146107A (en) * 1978-05-04 1979-11-15 Dainippon Printing Co Ltd Gravure material and making method thereof
DE2937275A1 (de) * 1978-09-15 1980-06-04 Crosfield Electronics Ltd Druckelement
JPS5619758A (en) * 1979-07-27 1981-02-24 Dainippon Printing Co Ltd Preparation of gravure cylinder made of resin
US5694852A (en) * 1990-04-26 1997-12-09 W.R. Chesnut Engineering, Inc. Rotogravure printing media and methods of manufacturing a rotogravure printing device employing the media
FR2693205B1 (fr) * 1992-07-02 1994-09-02 Inst Francais Du Petrole Compositions de revêtement gravables notamment pour rouleaux d'imprimerie, procédé d'enduction et objets fabriqués par ce procédé.
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
DE10115434A1 (de) * 2001-03-29 2002-10-10 Huber Fa Michael Muenchen Präpolymer und Rasterwalzen-Füllmaterial für tiefenvariable Laserablation
AUPR857301A0 (en) * 2001-10-29 2001-11-29 Kirk Engineering Services Australia Pty Ltd Printing elements and methods of construction
US7126619B2 (en) * 2002-05-31 2006-10-24 Buzz Sales Company, Inc. System and method for direct laser engraving of images onto a printing substrate
JPWO2007013333A1 (ja) * 2005-07-25 2009-02-05 株式会社シンク・ラボラトリー グラビア製版ロール及びその製造方法

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3109096A1 (de) 1980-03-11 1981-12-24 Crosfield Electronics Ltd., London Intaglio-druckteil, verfahren zu seiner herstellung und verfahren zur herstellung einer gravierten intaglio-druckoberflaeche
EP0584857A2 (fr) 1992-08-27 1994-03-02 Metallgesellschaft Ag Cylindre à impression en creux
DE19631469C1 (de) 1996-08-03 1998-02-19 Roland Man Druckmasch Verfahren und Vorrichtung zur Durchführung von Druckaufträgen
JP2000015770A (ja) 1998-06-30 2000-01-18 Think Laboratory Co Ltd 印刷版の再利用方法
WO2002040272A1 (fr) 2000-11-15 2002-05-23 Mdc Max Daetwyler Ag Procede de realisation de godets de trame dans une plaque d'heliogravure, et corps de base pouvant etre utilise dans ce procede
DE10126264A1 (de) 2001-05-29 2002-12-05 Giesecke & Devrient Gmbh Tiefdruckzylinder, Verfahren zum Herstellen eines Tiefdruckzylinders und Verfahren zum Recyceln eines Tiefdruckzylinders
EP1410924A1 (fr) 2002-10-17 2004-04-21 Hell Gravure Systems GmbH Procédé de production d'une forme d'impression pour la rotogravure, forme d'impression pour la rotogravure et utilisation de cette forme
EP1568490A1 (fr) 2004-02-27 2005-08-31 Hell Gravure Systems GmbH Procédé de gravure directe des cellules pour recevoir l'encre en rotogravure
DE102005052156A1 (de) 2005-11-02 2007-05-03 Man Roland Druckmaschinen Ag Verfahren und Vorrichtung für den Tiefdruck mittels einer lösch- und wiederverwendbaren Tiefdruckform
DE102005052157A1 (de) 2005-11-02 2007-05-03 Man Roland Druckmaschinen Ag Verfahren und Vorrichtung zur Bebilderung einer löschbaren und wieder verwendbaren Tiefdruckform

Also Published As

Publication number Publication date
DE102008035203A1 (de) 2010-02-11
DE102008035203B4 (de) 2011-01-27
EP2151324B1 (fr) 2014-03-19
DK2151324T3 (da) 2014-06-23
ES2459346T3 (es) 2014-05-09
PL2151324T3 (pl) 2014-08-29
EP2151324A3 (fr) 2011-02-23

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