EP2197677B1 - Manchon pour impression flexographique - Google Patents

Manchon pour impression flexographique Download PDF

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Publication number
EP2197677B1
EP2197677B1 EP08804084A EP08804084A EP2197677B1 EP 2197677 B1 EP2197677 B1 EP 2197677B1 EP 08804084 A EP08804084 A EP 08804084A EP 08804084 A EP08804084 A EP 08804084A EP 2197677 B1 EP2197677 B1 EP 2197677B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
radiation
intermediate layer
layer
enlarging
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
EP08804084A
Other languages
German (de)
English (en)
Other versions
EP2197677A1 (fr
Inventor
Reinhard Grassler
Stefan Gelhaus
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.)
Felix Bottcher & Co KG GmbH
Felix Boettcher GmbH and Co KG
Original Assignee
Felix Bottcher & Co KG GmbH
Felix Boettcher GmbH and Co KG
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 EP08100141A external-priority patent/EP2077184A1/fr
Application filed by Felix Bottcher & Co KG GmbH, Felix Boettcher GmbH and Co KG filed Critical Felix Bottcher & Co KG GmbH
Priority to SI200830317T priority Critical patent/SI2197677T1/sl
Priority to PL08804084T priority patent/PL2197677T3/pl
Priority to EP08804084A priority patent/EP2197677B1/fr
Publication of EP2197677A1 publication Critical patent/EP2197677A1/fr
Application granted granted Critical
Publication of EP2197677B1 publication Critical patent/EP2197677B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41CPROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00Forme preparation
    • B41C1/02Engraving; Heads therefor
    • B41C1/04Engraving; Heads therefor using heads controlled by an electric information signal
    • B41C1/05Heat-generating engraving heads, e.g. laser beam, electron beam
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00Inking and printing with a printer's forme
    • B41M1/02Letterpress printing, e.g. book printing
    • B41M1/04Flexographic printing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41NPRINTING 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
    • B41N3/00Preparing for use and conserving printing surfaces
    • B41N3/006Cleaning, washing, rinsing or reclaiming of printing formes other than intaglio formes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41NPRINTING 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
    • B41N7/00Shells for rollers of printing machines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41NPRINTING 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
    • B41N2207/00Location or type of the layers in shells for rollers of printing machines
    • B41N2207/02Top layers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41NPRINTING 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
    • B41N2207/00Location or type of the layers in shells for rollers of printing machines
    • B41N2207/04Intermediate layers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41NPRINTING 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
    • B41N2207/00Location or type of the layers in shells for rollers of printing machines
    • B41N2207/14Location or type of the layers in shells for rollers of printing machines characterised by macromolecular organic compounds

Definitions

  • the present invention relates to a sleeve for flexographic printing and method for its production.
  • Flexographic printing is a printing process that is used extensively for printing on packaging materials made of plastics, paper, cardboard or cardboard.
  • printing plates are used which are clamped onto a printing cylinder or mounting sleeve.
  • This technology has the disadvantage that a seam remains after assembly, which interferes with the printing process.
  • Typical materials for the printing layer of the sleeves in flexographic printing consist of rubber or photopolymers.
  • An alternative to this is direct laser engraving.
  • the unnecessary areas of the printing form are removed by using a laser, the remaining and the removed areas then give the printing form.
  • This is possible with both rubber-coated sleeves and sleeves, in which a layer of a photopolymer is applied to a sleeve and polymerized.
  • the direct laser engraving is particularly advantageous because nowadays the required information is generally already available digitally and can be saved by the direct engraving step over the analog exposure system.
  • the circumference of the printing form is specified in narrow ranges.
  • a large amount of photopolymer would have to be applied, which is very expensive on the one hand, and, on the other hand, hardening of the photopolymer becomes more difficult as the thickness increases.
  • the printing plate can be mechanically unstable due to the low hardness, which adversely affects the printing result.
  • the circumference of the roller or the sleeve determines the printable with the roller printing length, so the repeat, i. the length after which the print pattern repeats.
  • the sleeve according to the invention has on the sleeve on a designssverierernde intermediate layer. This has a thickness of 2 to 20 mm, preferably 2 to 15 mm.
  • the thickness of the intermediate layer is> 5 mm or> 8 mm or> 10 mm.
  • This intermediate layer increases the distance of the outer printing layer from the central axis, so that the printing length increases and larger motifs can be printed. This increases the repeat.
  • the outer layer is a radiation-cured polymer, in particular a photopolymer, as has hitherto been used in the prior art for corresponding sleeves.
  • the sleeve of the sleeve is typically made of a glass fiber reinforced plastic. However, it is also possible, for example, to use carbon fiber-reinforced plastics or other sleeve materials used in flexographic printing.
  • Natural rubber or synthetic rubber, but also polyurethane, is suitable in particular as a pressure-length-increasing intermediate layer. It is important that the intermediate layer has a certain mechanical and geometric stability in order to be used as part of the printing plate in flexographic printing can. A hardness of the material ⁇ 80 Shore A has proven to be particularly suitable.
  • a further compressible layer may be present, for example, a porous polyurethane.
  • Radiation-curable polymers which can be engraved by means of a laser are known to the person skilled in the art, for example from US Pat EP 1 710 093 A1 or the EP 1 424 210 A1 , in which further suitable materials are described.
  • the invention further relates to the use of the sleeve according to the invention, which has a motif produced by laser engraving.
  • the radiation-curable polymer is polymers which are liquid at room temperature. These allow a particularly advantageous application on the intermediate layer.
  • the print length-increasing intermediate layer can be produced in various ways. For example, if it is a natural or synthetic rubber, the partially finished sleeve must first be vulcanized. As a rule, this will be followed by a surface treatment of the intermediate layer before the radiation-curable polymer is applied.
  • polyurethane is used as the pressure-length-increasing intermediate layer, this can basically also be applied directly to the sleeve. It is also possible to surround the sleeve with an outer sleeve and to introduce the polyurethane layer between the two sleeves and then to remove the outer sleeve. It may also leave the outer sleeve and be coated with the photopolymer.
  • the applied radiation-curable polymer is then subsequently cured.
  • this is done by exposure, for example, with UV light.
  • the layer of the cured polymer in a relatively simple manner again can be removed, for example by scratching and tearing.
  • the print length-increasing intermediate layer is exposed again and can - if necessary after a surface treatment - be coated again with a radiation-curable polymer.
  • the inner sleeve can be repeatedly reused with the pressure-length-increasing intermediate layer.
  • the invention also provides for the use of a print length-increasing intermediate layer having a thickness of 2 to 20 nm with a hardness of ⁇ 80 shore A for a sleeve with a sleeve and a laser-engravable layer of a radiation-cured polymer for increasing the repeat of the sleeve.
  • the invention also provides the use of the sleeve according to the invention in a method for laser direct engraving or the use of a sleeve with an applied motif in flexographic printing.
  • FIG. 1 shows schematically the structure according to the invention.
  • a sleeve 1 made of a glass fiber reinforced plastic is a christzannver remplimde Intermediate layer 2, on which a layer of a cured photopolymer 3 is located.
  • the cured photopolymer can then be laser engraved with a motif for flexographic printing.
  • FIG. 2 shows a corresponding structure with a stronger intermediate layer.
  • an intermediate layer of an 80 Shore A hard intermediate rubber is additionally installed between the sleeve and the functional layer, so that a total layer thickness of 7.90 mm and thus an outer diameter of 152.79 mm are formed , With this additional hard liner, a larger print size is achieved cost and at the same time the mechanical stability of the printing plate is maintained.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Manufacturing & Machinery (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Pens And Brushes (AREA)
  • Wrappers (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Claims (11)

  1. Utilisation d'un manchon pour l'impression flexographique, comprenant
    - une douille (1)
    - une couche intermédiaire (2) située sur la douille et augmentant la longueur d'impression, d'une épaisseur de 2 à 20 mm, d'une dureté ≥ 80 shore A
    - une couche, gravable par laser, d'un polymère (3) durci par rayonnement
    pour l'agrandissement du rapport.
  2. Utilisation selon la revendication 1, caractérisée en ce que la douille (1) est réalisée en matière plastique renforcée de fibre de verre ou en matière plastique renforcée de fibre de carbone.
  3. Utilisation selon la revendication 1 ou 2, caractérisée en ce que la couche intermédiaire (2) est sélectionnée parmi le caoutchouc synthétique, le caoutchouc naturel, le poly(uréthane) ou des mélanges de ceux-ci.
  4. Utilisation selon au moins l'une des revendications 1 à 3, caractérisée en ce que, en ce qui concerne le polymère durci par rayonnement, il s'agit d'un photopolymère durci.
  5. Utilisation selon au moins l'une des revendications 1 à 4, caractérisée en ce que, entre la couche intermédiaire (2) augmentant la longueur d'impression et la couche (3) gravable par laser, il y a une couche compressible.
  6. Utilisation selon au moins l'une des revendications 1 à 5, caractérisée en ce que la couche (3) gravable par laser présente un motif créé par gravage au laser.
  7. Utilisation d'une couche intermédiaire (2) augmentant la longueur d'impression, d'une épaisseur de 2 à 20 mm, d'une dureté de ≥ 80 Shore A, dans le cas d'un manchon avec une douille et une couche gravable par laser d'un polymère (3) durci par rayonnement pour l'agrandissement du rapport du manchon.
  8. Manchon pour l'impression flexographique, comprenant
    - une douille (1)
    - une couche intermédiaire (2) augmentant la longueur d'impression, située sur la douille, d'une épaisseur de 2 à 20 mm, d'une dureté ≥ 80 shore A
    - une couche, gravable par laser, d'un polymère (3) durci par rayonnement
    pour l'agrandissement du rapport.
  9. Procédé de fabrication d'un manchon selon la revendication 8, comprenant les étapes suivantes :
    - réalisation d'une douille (1)
    - application d'une couche intermédiaire (2) augmentant la longueur d'impression
    - éventuellement traitement de surface de la couche intermédiaire (2)
    - application d'un polymère durcissable par rayonnement
    - durcissement par rayonnement du polymère durcissable par rayonnement.
  10. Procédé de réutilisation d'un manchon selon la revendication 8, comprenant les étapes suivantes :
    - enlèvement de la couche polymère (3) durcie par rayonnement
    - éventuellement traitement de surface de la couche intermédiaire (2) libérée
    - application d'un polymère durcissable par rayonnement
    - durcissement par rayonnement du polymère durcissable par rayonnement.
  11. Utilisation d'un manchon selon la revendication 8 dans un procédé de gravage direct au laser.
EP08804084A 2007-09-12 2008-09-12 Manchon pour impression flexographique Not-in-force EP2197677B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SI200830317T SI2197677T1 (sl) 2007-09-12 2008-09-12 Rokav za fleksotisk
PL08804084T PL2197677T3 (pl) 2007-09-12 2008-09-12 SLEEVE do druku flexograficznego
EP08804084A EP2197677B1 (fr) 2007-09-12 2008-09-12 Manchon pour impression flexographique

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP07116254 2007-09-12
EP08100141A EP2077184A1 (fr) 2008-01-07 2008-01-07 Manchon pour l'impression flexographique
PCT/EP2008/062119 WO2009034160A1 (fr) 2007-09-12 2008-09-12 Manchon pour impression flexographique
EP08804084A EP2197677B1 (fr) 2007-09-12 2008-09-12 Manchon pour impression flexographique

Publications (2)

Publication Number Publication Date
EP2197677A1 EP2197677A1 (fr) 2010-06-23
EP2197677B1 true EP2197677B1 (fr) 2011-04-20

Family

ID=40122500

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08804084A Not-in-force EP2197677B1 (fr) 2007-09-12 2008-09-12 Manchon pour impression flexographique

Country Status (11)

Country Link
US (1) US20110303110A1 (fr)
EP (1) EP2197677B1 (fr)
JP (1) JP5619611B2 (fr)
AT (1) ATE506184T1 (fr)
CA (1) CA2699053A1 (fr)
DE (1) DE502008003304D1 (fr)
DK (1) DK2197677T3 (fr)
PL (1) PL2197677T3 (fr)
PT (1) PT2197677E (fr)
SI (1) SI2197677T1 (fr)
WO (1) WO2009034160A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009003817A1 (de) * 2009-04-23 2010-10-28 Contitech Elastomer-Beschichtungen Gmbh Mehrschichtiges Flächengebilde in Form eines Drucktuches oder einer Druckplatte für den Flexo-und Hochdruck mit einer Lasergravur
US20120234189A1 (en) * 2011-03-17 2012-09-20 Yehuda Solomon Reuseable printing device
US9156299B2 (en) 2011-06-30 2015-10-13 Eastman Kodak Company Laser-imageable flexographic printing precursors and methods of imaging
DE102014220850A1 (de) * 2014-10-15 2016-04-21 Contitech Elastomer-Beschichtungen Gmbh Druckhülse und Verfahren zur Herstellung einer Druckhülse

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5804353A (en) * 1992-05-11 1998-09-08 E. I. Dupont De Nemours And Company Lasers engravable multilayer flexographic printing element
DE60226617D1 (de) * 2001-09-05 2008-06-26 Asahi Kasei Chemicals Corp Lichtempfindliche harzzusammensetzung und lasergravierbares druckelement
US6703095B2 (en) * 2002-02-19 2004-03-09 Day International, Inc. Thin-walled reinforced sleeve with integral compressible layer
JPWO2005070691A1 (ja) * 2004-01-27 2007-09-06 旭化成ケミカルズ株式会社 レーザー彫刻可能な印刷基材用感光性樹脂組成物
JP4391260B2 (ja) * 2004-02-05 2009-12-24 旭化成イーマテリアルズ株式会社 周長調整層を有する円筒状印刷原版
JP2005219378A (ja) * 2004-02-06 2005-08-18 Asahi Kasei Chemicals Corp 円筒状印刷原版
EP1731325B1 (fr) * 2004-03-30 2010-02-24 Asahi Kasei Chemicals Corporation Matériau de base d'impression cylindrique creux

Also Published As

Publication number Publication date
EP2197677A1 (fr) 2010-06-23
ATE506184T1 (de) 2011-05-15
DE502008003304D1 (de) 2011-06-01
SI2197677T1 (sl) 2011-08-31
PT2197677E (pt) 2011-05-13
CA2699053A1 (fr) 2009-03-19
WO2009034160A1 (fr) 2009-03-19
JP2010538867A (ja) 2010-12-16
DK2197677T3 (da) 2011-07-25
JP5619611B2 (ja) 2014-11-05
US20110303110A1 (en) 2011-12-15
PL2197677T3 (pl) 2011-10-31

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