EP1655145B1 - Druckform für Lacke - Google Patents

Druckform für Lacke Download PDF

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Publication number
EP1655145B1
EP1655145B1 EP05110333A EP05110333A EP1655145B1 EP 1655145 B1 EP1655145 B1 EP 1655145B1 EP 05110333 A EP05110333 A EP 05110333A EP 05110333 A EP05110333 A EP 05110333A EP 1655145 B1 EP1655145 B1 EP 1655145B1
Authority
EP
European Patent Office
Prior art keywords
layer
transfer layer
printing form
printing
hydrophilic
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.)
Not-in-force
Application number
EP05110333A
Other languages
English (en)
French (fr)
Other versions
EP1655145A1 (de
Inventor
Martin Schleussner
Arne Weber
Thomas Dietrich
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.)
Folex Coating GmbH
Original Assignee
Folex Coating 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=35645805&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1655145(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Folex Coating GmbH filed Critical Folex Coating GmbH
Priority to EP08161263A priority Critical patent/EP1977903A1/de
Priority to PL05110333T priority patent/PL1655145T3/pl
Priority to SI200530439T priority patent/SI1655145T1/sl
Publication of EP1655145A1 publication Critical patent/EP1655145A1/de
Application granted granted Critical
Publication of EP1655145B1 publication Critical patent/EP1655145B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/02—Letterpress printing, e.g. book printing
    • B41M1/04—Flexographic printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/06—Lithographic printing
    • 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
    • B41N10/00—Blankets or like coverings; Coverings for wipers for intaglio printing
    • B41N10/02—Blanket structure

Definitions

  • the subject of the present invention is a printing form.
  • gloss varnish After printing, for example by offset or flexo printing processes.
  • gloss lacquers can be present both in aqueous and in organic solution and can be cured by UV or heat.
  • a high-pressure mold in which there is a protective layer protecting against mechanical damage between a carrier layer and a paint or varnish-transferring layer.
  • This layer is intended to protect the backing from mechanical damage and consists essentially of aluminum, biaxially oriented polyester or stainless steel.
  • Such protective layers are expensive and expensive to handle.
  • This known high-pressure form for paints has the disadvantage that the high-quality paint-transferring layers are difficult to prepare depending on the required thickness of the printing plate and the handling of correspondingly thicker polyurethane layers is difficult.
  • the high-pressure form according to the invention has a filling layer 3, which is located between the lacquer-transmitting, hydrophilic layer 2 and a carrier layer 1.
  • the thickness of the paint-transferring, hydrophilic layer can therefore be reduced accordingly. Nevertheless, comparably good product properties of the printing form are achieved.
  • the thickness of the filling layer 3 is greater than the thickness of the lacquer-transferring, hydrophilic layer.
  • Typical support layers are in the range of 300 to 400 .mu.m, the thicknesses for the hydrophilic, paint-transferring layer is in the range of 80 to 400 .mu.m.
  • Printing plates usually have thicknesses of 1,150, 1,350 or 1,950 ⁇ m, so that the thickness of the filling layer 3 is in the range of about 350 to 1,200 ⁇ m, preferably 550 to 950 ⁇ m.
  • FIG 1 shows schematically the structure of the printing form according to the invention.
  • the filling layer 3 are materials having rubber or rubber elastic properties, in particular polyethylenes, silicones, nitrile rubbers, butyl rubbers, polypropylenes, polyvinyl chlorides and mixtures thereof.
  • the filler layer consists of at least 50% by weight of these materials, more preferably at least 70% by weight, and most preferably at least 80% by weight.
  • Suitable materials for the carrier layer are in particular polyethylene terephthalate, polycarbonate, aluminum and stainless steel.
  • Preferred materials for the paint-transferring layer 2 are polyurethanes, urethane-modified epoxy resins, silicones, modified silicones or mixtures thereof, since these give suitable hydrophilic surfaces.
  • the paint-transferring layer 2 may contain polyethers, aromatic polyethers or polyether polyols.
  • Corresponding layers preferably have a Shore (A) hardness of 40 to 90 (DIN 53505) and a surface roughness of Ra 0.05 to 5.0 microns and / or Rz 0.5 to 10 microns.
  • the hydrophilic layer preferably has surface energies ⁇ 35, preferably ⁇ 40, more preferably ⁇ 45 mN / m.
  • the high-pressure mold can be a plate (metal and metal-plastic composite) or a cloth (film or foil laminate).
  • the printing plates of the invention are particularly suitable for the application of paints within or following flexo and offset processes for finishing the printed product.
  • the paints may preferably be in aqueous solution for this purpose. It may also be dispersions and / or emulsions.
  • the printing plates according to the invention can be produced by a method in which a filling layer 3 is applied to a carrier layer 1 and a paint-transferring, hydrophilic layer 2 is applied to the filling layer 3.
  • Suitable methods for this purpose are coating, laminating, laminating and coextruding.
  • the filling layer can be laminated onto the carrier layer with a suitable adhesive system, onto which the hydrophilic coating-transferring layer is then glued.
  • the hydrophilic cover layer and the filling layer can be coextruded onto the carrier layer.
  • a triple coextrusion of support layer, filling layer and hydrophilic cover layer is possible.
  • the invention is further illustrated by the following example.
  • a carrier layer of polyethylene terephthalate (Mylar® A 350 microns, Fa. DuPont) is applied via a suitable binder system (Henkel Liofol® UR 2780) a soft PVC film (700 microns thickness) and on this one Polyurethane film with a thickness of 80 to 100 .mu.m laminated with a suitable for PVC-PU bonding adhesive system (Henkel Liofol ® UR 2780).
  • the hydrophilic cover layer exhibits suitable physical properties.

Landscapes

  • Printing Plates And Materials Therefor (AREA)
  • Laminated Bodies (AREA)
  • Printing Methods (AREA)
  • Preparing Plates And Mask In Photomechanical Process (AREA)
  • Macromonomer-Based Addition Polymer (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Decoration By Transfer Pictures (AREA)

Description

  • Gegenstand der vorliegenden Erfindung ist eine Druckform.
  • Zum Schutz oder zur Veredelung von Oberflächen können diese nach der Bedruckung zum Beispiel durch Offset- oder Flexo-Druckverfahren mit einem Glanzlack versehen werden. Diese Glanzlacke können sowohl in wässriger als auch in organischer Lösung vorliegen und können durch UV oder Wärme gehärtet werden.
  • Aus der DE 198 04 672 A1 ist eine Hochdruckform bekannt, bei der sich zwischen einer Trägerschicht und einer farb- oder lackübertragenden Schicht eine vor mechanischer Beschädigung bewahrende Schutzschicht befindet. Diese Schicht soll die Trägerschicht vor mechanischen Verletzung bewahren und besteht im wesentlichen aus Aluminium, biaxial gerecktem Polyester oder Edelstahl. Solche Schutzschichten sind teuer und aufwendig in der Handhabung.
  • Aus der DE 198 04 671 A1 ist eine Hochdruckform bekannt, die besonders an die Erfordernisse einer Lackübertragung angepasst ist.
  • Diese bekannte Hochdruckform für Lacke hat den Nachteil, dass die hochwertigen lackübertragenden Schichten in Abhängigkeit von der benötigten Stärke der Druckform schwierig herzustellen sind und die Handhabung entsprechend dicker Polyurethanschichten schwierig ist.
  • Aufgabe der vorliegenden Erfindung war es daher, eine Druckform bereit zu stellen, die mit der oben genannten Druckform vergleichbare lackübertragende Eigenschaften aufweist, jedoch eine einfachere Herstellung erlaubt.
  • Überraschenderweise wurde nun gefunden, dass die Aufgabe gelöst wird durch eine Druckform mit den Merkmalen des Patentanspruchs 1.
  • Die erfindungsgemäße Hochdruckform weist eine Füllschicht 3 auf, die sich zwischen der lackübertragenden, hydrophilen Schicht 2 und einer Trägerschicht 1 befindet. Die Dicke der lackübertragenden, hydrophilen Schicht kann daher entsprechend verringert werden. Trotzdem werden vergleichbar gute Produkteigenschaften der Druckform erreicht.
  • Typischerweise ist bei der erfindungsgemäß hergestellten Druckform die Dicke der Füllschicht 3 größer als die Dicke der lackübertagenden, hydrophilen Schicht. Typischen Trägerschichten liegen im Bereich von 300 bis 400 µm, die Stärken für die hydrophile, lackübertragende Schicht liegt im Bereich von 80 bis 400 µm. Druckformen haben üblicherweise Stärken von 1.150, 1.350 oder 1.950 µm, so dass die Stärke der Füllschicht 3 im Bereich von ca. 350 bis 1.200 µm, bevorzugt 550 bis 950 µm liegt.
  • Die Figur 1 zeigt schematisch den Aufbau der erfindungsgemäßen Druckform.
  • Für die Füllschicht 3 eignen sich Materialien mit gummi- oder kautschukelastischen Eigenschaften, insbesondere Polyethylene, Silikone, NitrilKautschuke, Butyl-Kautschuke, Polypropylene, Polyvinylchloride und Mischungen davon. Die Füllschicht besteht zu mindestens 50 Gew. % aus diesen Stoffen, mehr bevorzugt zu mindestens 70 Gew. % und am meisten bevorzugt zu mindestens 80 Gew. %.
  • Geeignete Materialien für die Trägerschicht sind insbesondere Polyethylentherephthalat, Polycarbonat, Aluminium und Edelstahl.
  • Bevorzugte Materialien für die lackübertragende Schicht 2 sind Polyurethane, urethanmodifizierte Epoxidharze, Silikone, modifizierte Silikone oder Mischungen davon, da diese geeignete hydrophile Oberflächen ergeben. Darüber hinaus kann die lackübertragende Schicht 2 Polyether, aromatische Polyether oder Polyetherpolyole enthalten.
  • Entsprechende Schichten weisen bevorzugt eine Shore (A)-Härte von 40 bis 90 (DIN 53505) und eine Oberflächenrauhigkeit von Ra 0,05 bis 5,0 µm und/oder Rz 0,5 bis 10 µm auf.
  • Die hydrophile Schicht weist bevorzugt Oberflächenenergien ≥ 35, bevorzugt ≥ 40, mehr bevorzugt ≥ 45 mN/m auf.
  • Je nach verwendeter Druckmaschine kann die Hochdruckform eine Platte (Metall und Metall-Kunststoffverbund) oder ein Tuch (Folie oder Folienlaminat) sein.
  • Die erfindungsgemäßen Druckformen eignen sich insbesondere zur Auftragung von Lacken innerhalb oder im Anschluss an Flexo- und Offset-Prozesse zur Veredelung des Druckproduktes. Bevorzugterweise können die Lacke dazu in wässriger Lösung vorliegen. Es können auch Dispersionen und/oder Emulsionen sein.
  • Die erfindungsgemäßen Druckformen sind herstellbar durch ein Verfahren, bei dem eine Füllschicht 3 auf eine Trägerschicht 1 aufgetragen wird und auf die Füllschicht 3 eine lackübertragende, hydrophile Schicht 2 aufgetragen wird. Geeignete Verfahren sind hierfür Beschichten, Kaschieren, Laminieren und Coextrudieren. Dabei kann die Füllschicht auf die Trägerschicht mit einem geeigneten Klebersystem auflaminiert werden, auf die dann die hydrophile lackübertragende Schicht aufgeklebt wird. Alternativ können auch die hydrophile Deckschicht und die Füllschicht auf die Trägerschicht coextrudiert werden. Darüber hinaus ist auch eine dreifache Coextrusion von Trägerschicht, Füllschicht und hydrophiler Deckschicht möglich.
  • Die Erfindung wird durch das folgende Beispiel näher erläutert.
  • Auf eine Trägerschicht aus Polyethylentherephthalat (Mylar® A 350 µm, Fa. DuPont) wird über ein geeignetes Bindersystem (Henkel Liofol® UR 2780) eine weiche PVC-Folie (700 µm Stärke) aufgebracht und auf diese eine Polyurethanfolie mit einer Dicke von 80 bis 100 µm mit einem zur PVC-PU-Verklebung geeigneten Klebersystem (Henkel Liofol® UR 2780) laminiert.
  • Die hydrophile Deckschicht zeigt geeignete physikalische Eigenschaften.

Claims (10)

  1. Druckform für Druckverfahren mit einer Trägerschicht (1) und einer lackübertragenden, hydrophilen Schicht (2), dadurch gekennzeichnet, dass sich zwischen der Trägerschicht (1) und der lackübertragenden, hydrophilen Schicht (2) eine Füllschicht (3) befindet, die zu mindestens 50 Gew.-% aus Polyethylen, Silikonen, Nitril-Kautschuken, Butyl-Kautschuken, Polypropylen, Polyvinylchlorid oder Mischungen davon besteht und wobei die lackübertragende Schicht (2) eine Stärke von 80 bis 400 µm aufweist.
  2. Druckform gemäß Anspruch 1, dadurch gekennzeichnet, dass die lackübertragende Schicht (2) Polyurethane, Urethan modifizierte Epoxidharz-Mischungen, Silikone, modifizierte Silikone oder Mischungen davon enthält.
  3. Druckform gemäß Anspruch 1 und/oder 2, dadurch gekennzeichnet, dass die lackübertragende Schicht (2) Polyether, aromatische Polyether und/oder Polyetherpolyole enthält.
  4. Druckform gemäß mindestens einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Druckform eine Platte oder ein Tuch ist.
  5. Druckform nach mindestens einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Dicke der Füllschicht (3) größer ist als die Dicke der lackübertragenden, hydrophilen Schicht (2).
  6. Druckform nach mindestens einem der Ansprüche 1 bis 5 dadurch gekennzeichnet, dass die hydrophile, lackübertragende Schicht (2) eine Oberflächenspannung über 28, bevorzugt über 40 mN/m aufweist.
  7. Verwendung von Druckformen gemäß mindestens einem der Ansprüche 1 bis 6 für die Auftragung von Lacken innerhalb oder im Anschluss an Flexo- oder Offset-Prozesse zur Veredelung des Produktes.
  8. Verwendung gemäß Anspruch 7, dadurch gekennzeichnet, dass die Lacke in wässriger Lösung, Dispersion und/oder Emulsionen vorliegen.
  9. Verfahren zur Herstellung einer Druckform gemäß mindestens einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass auf eine Trägerschicht (1) eine Füllschicht (3) aufgebracht wird, auf die eine lackübertragende, hydrophile Schicht (2) aufgetragen wird.
  10. Verfahren nach Anspruch 9, dadurch gekennzeichnet, dass der Auftrag durch Beschichten, Kaschieren, Laminieren oder Coextrudieren erfolgt.
EP05110333A 2004-11-04 2005-11-04 Druckform für Lacke Not-in-force EP1655145B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP08161263A EP1977903A1 (de) 2004-11-04 2005-11-04 Druckform für Lacke
PL05110333T PL1655145T3 (pl) 2004-11-04 2005-11-04 Forma drukarska do lakierów
SI200530439T SI1655145T1 (sl) 2004-11-04 2005-11-04 Tiskovna plošča za lake

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004053824A DE102004053824A1 (de) 2004-11-04 2004-11-04 Druckform für Lacke

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP08161263A Division EP1977903A1 (de) 2004-11-04 2005-11-04 Druckform für Lacke

Publications (2)

Publication Number Publication Date
EP1655145A1 EP1655145A1 (de) 2006-05-10
EP1655145B1 true EP1655145B1 (de) 2008-07-30

Family

ID=35645805

Family Applications (2)

Application Number Title Priority Date Filing Date
EP08161263A Withdrawn EP1977903A1 (de) 2004-11-04 2005-11-04 Druckform für Lacke
EP05110333A Not-in-force EP1655145B1 (de) 2004-11-04 2005-11-04 Druckform für Lacke

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP08161263A Withdrawn EP1977903A1 (de) 2004-11-04 2005-11-04 Druckform für Lacke

Country Status (8)

Country Link
EP (2) EP1977903A1 (de)
AT (1) ATE402825T1 (de)
DE (2) DE102004053824A1 (de)
DK (1) DK1655145T3 (de)
ES (1) ES2311933T3 (de)
PL (1) PL1655145T3 (de)
PT (1) PT1655145E (de)
SI (1) SI1655145T1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202016003289U1 (de) 2016-05-30 2017-09-20 Folex Coating Gmbh Lackierform für Flexo- und Offsetdruck

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2559426A1 (fr) * 1984-02-10 1985-08-16 Ferre Jean Michel Plaque flexographique
US4642247A (en) * 1984-06-29 1987-02-10 Canon Kabushiki Kaisha Recording medium
DE3730194A1 (de) * 1987-09-09 1989-03-23 Bonner Zeitungsdruckerei Druckplatte, insbesondere fuer den zeitungsrotations-hochdruck
DE19804671A1 (de) * 1998-02-06 1999-08-12 Technoplast Beschichtungsgesel Hochdruckform für Lacke
DE19804672A1 (de) * 1998-02-06 1999-08-12 Technoplast Beschichtungsgesel Einreißgeschützte Hochdruckform
DE10034932B4 (de) * 2000-07-11 2009-02-05 Paul Sauer Gmbh & Co. Walzenfabrik Kg Farb-,Feucht- oder Lackierwalze mit lösbarem Walzenmantel

Also Published As

Publication number Publication date
DE102004053824A1 (de) 2006-05-11
ES2311933T3 (es) 2009-02-16
PL1655145T3 (pl) 2009-01-30
EP1655145A1 (de) 2006-05-10
PT1655145E (pt) 2008-09-17
DK1655145T3 (da) 2008-11-24
EP1977903A1 (de) 2008-10-08
SI1655145T1 (sl) 2009-02-28
DE502005004868D1 (de) 2008-09-11
ATE402825T1 (de) 2008-08-15

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