EP1876022A2 - Rouleau tramé d'impression flexographique et procédé d'impression flexographique - Google Patents

Rouleau tramé d'impression flexographique et procédé d'impression flexographique Download PDF

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Publication number
EP1876022A2
EP1876022A2 EP07013239A EP07013239A EP1876022A2 EP 1876022 A2 EP1876022 A2 EP 1876022A2 EP 07013239 A EP07013239 A EP 07013239A EP 07013239 A EP07013239 A EP 07013239A EP 1876022 A2 EP1876022 A2 EP 1876022A2
Authority
EP
European Patent Office
Prior art keywords
printing
flexographic printing
ink
paint
recesses
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.)
Withdrawn
Application number
EP07013239A
Other languages
German (de)
English (en)
Inventor
Rainer Stamme
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.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen 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
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP1876022A2 publication Critical patent/EP1876022A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/027—Ink rail devices for inking ink rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/26—Construction of inking rollers

Definitions

  • the invention relates to a flexographic printing plate roller according to the preamble of claim 1. Furthermore, the invention relates to a flexographic printing method according to the preamble of patent claim 6.
  • flexographic printing is a special high-pressure process.
  • Flexographic printing is particularly used in packaging printing, label printing and newspaper printing.
  • in flexographic printing ink is applied via a Farbzu slaughterhouse issued by a Farbzu slaughterhouse, in particular via a chambered doctor blade, on a flexographic printing screen roller which transfers the ink to a positioned on a form cylinder flexographic printing plate, which ultimately applies the ink to the substrate to be printed.
  • Flexographic printing raster rollers known from practice have a grid of pits on a surface, which can be filled with printing ink via the ink supply device, the ink being transferred from the pots to the flexographic printing plate, namely onto raised picture elements thereof.
  • all the pits have an identical depth, from which it follows that printing ink can be applied exclusively to a uniform thickness or layer thickness in flexographic printing on the printing substrate. As a result, the achievable design options for printed products are limited.
  • the present invention is based on the problem to provide a novel flexographic printing screen roller and a novel flexographic printing process, with which or with which can be applied to a substrate to be printed printing ink or paint with different thickness.
  • a flexographic printing roller according to claim 1.
  • the wells have different depths so as to apply printing ink or varnish of different thickness to a flexographic printing plate and thus ultimately to a printing substrate to be printed.
  • the surface has recesses which all have the same dimensions, in particular the same depth, wherein the recesses can be filled evenly and completely with filling material, and subsequently the filling material can be removed individually from the recesses while providing the cups with different depths.
  • the flexographic printing method according to the invention is defined in claim 6.
  • the present invention relates to the field of flexographic printing.
  • Flexographic printing is a special high pressure process.
  • an ink supply device which is designed in particular as a chamber doctor blade
  • printing ink or paint is applied to a flexographic printing screen roller.
  • the flexographic printing roller rolls on a form cylinder, on which a flexographic printing plate is arranged, so as to transfer the ink or the paint on the flexographic printing plate.
  • the flexographic printing plate ultimately contributes to the printing ink or the paint on the substrate.
  • Figs. 1 to 3 show a section of a surface 10 of a flexographic printing cylinder 11 in various states, wherein Fig. 3 shows a section of the surface 10 of the flexographic printing cylinder 11, as it is used for printing.
  • the flexographic printing roller 11 has on its surface 10 via a grid of recesses 12, which preferably all have the same dimensions, in particular an equal depth.
  • the recesses 12 are completely filled in the illustration of FIG. 2 with a filling material 13.
  • filler material 13 is removed differently or individually in FIG. 3 from the recesses 12.
  • the procedure is typically such that the recesses 12 of a printing plate, which are completely empty, are completely or completely filled with filling material 13, as shown in FIG. 4, by means of a doctor blade 15 in that the anilox roller 11 subsequently has a smooth surface on its surface 10.
  • the individual removal of the filling material 13 from the recesses 12 to provide the flexographic printing roller 11 shown in Fig. 3 is carried out according to FIG. 5, preferably with the aid of a laser 16. If there is no flexographic printing roller 11 with completely empty recesses 12, so before filling the recesses 12 with filling material according to FIG. 6 a flexographic printing raster roller 11 already used for printing is erased with the aid of an erasing device 17, the filling material 13 being completely removed for this purpose with the aid of the erasing device 17 from the recesses 12.
  • Flexographic printing roller 11 is therefore an erasable and imageable anilox roller, wherein the imaging is to be understood to mean the provision of cells 14 having a different depth at the surface 10 of the flexographic printing cylinder 11.
  • the depth of the well 14 determines the Schöpfvolumen same or the absorption capacity of the same to printing ink or varnish and thus ultimately the thickness or layer thickness, with which ink or paint is applied to a substrate. This will be described in more detail below with reference to Figs. 7 and 8.
  • FIG. 7 again shows a section of a surface 10 of a flexographic printing screen roller 11 according to the invention, wherein the filling material 13, with which the recesses 12 of the flexographic printing screen roller 11 are filled to different degrees, is shown in FIG. 7 by striped areas and not, as in FIGS 5 are represented by completely black areas.
  • the wells 14 with different depths of the flexographic printing screen roller 10 are filled in FIG. 7 with printing ink 18, wherein the printing ink 18 in FIG. 1 is visualized by black areas.
  • the cups 14 of the flexographic printing screen roller 11 which receive a different amount of printing ink transfer the printing ink 18 to a flexographic printing plate 19, namely raised printing elements 20 of the flexographic printing plate 19. From these raised printing elements 20 of the flexographic printing plate 19 the printing ink 18 passes according to FIG on a substrate 21 and thus forms on the substrate 21 areas 22, which have a different thickness or thickness of ink.
  • the wells 14 of the raster printing roll 11 according to the invention can either have a different image depending on the printing image or independent of the printing image and thus have the different depths and thus scoop volumes for printing ink or varnish. Then, if the wells have different depths depending on the printing image, the individual removal of the filling material 13 from the recesses 11 takes place in the sense of FIG. 5 as a function of print image data of the print image to be printed. In this case, then the diameter of the flexographic printing cylinder must correspond to the diameter of the forme cylinder which carries the flexographic printing plate.
  • the wells have different depths independent of the image of the print image, and this is used, in particular, to produce z. B. in the circumferential direction or in the right-left expansion areas with different thickness or thickness of ink or paint to provide.
  • filler 13 a polymer is preferably used.
  • the polymer used as filler material 13 must be ink-resistant or paint-resistant, so that its properties are not impaired during printing.
  • the polymer used as filling material 13 must have an abrasion resistance so that the filling material 13 is not damaged during the mechanical doctoring process.
  • the polymer used as filler material 13 must be heat resistant so that it can be selectively removed from the cavities 12 with a laser to provide the wells of different depths.
  • Further properties which the polymer 13 used as filling material 13 should have are good extinguishing properties in order to be able to completely remove same from the recesses 12 thereof for extinguishing the flexographic printing plate roller, as well as good curing properties, so that after filling the recesses 12 with filling material directly Selective removal to provide the wells 14 of different depths can be started.
  • filler-filled recesses 12 it may be necessary to treat the filler-filled recesses 12 prior to the selective removal of filler 13 on its surface so as to provide a smooth, non-interfering surface roughness to the flexographic printing cylinder 11.
  • the flexographic printing raster roller 11 according to the invention can be designed both as a solid roller and sleeve or sleeve. Both variants are possible, but the execution of the flexographic printing roller as a sleeve is cheaper.

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  • Printing Methods (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP07013239A 2006-07-08 2007-07-06 Rouleau tramé d'impression flexographique et procédé d'impression flexographique Withdrawn EP1876022A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006031682A DE102006031682A1 (de) 2006-07-08 2006-07-08 Flexodruckrasterwalze und Flexodruckverfahren

Publications (1)

Publication Number Publication Date
EP1876022A2 true EP1876022A2 (fr) 2008-01-09

Family

ID=38606559

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07013239A Withdrawn EP1876022A2 (fr) 2006-07-08 2007-07-06 Rouleau tramé d'impression flexographique et procédé d'impression flexographique

Country Status (3)

Country Link
US (1) US20080022870A1 (fr)
EP (1) EP1876022A2 (fr)
DE (1) DE102006031682A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2581227A1 (fr) * 2011-10-14 2013-04-17 Bobst Bielefeld GmbH Rouleau d'encrage et jeux de rouleaux d'encrage pour vérification des couleurs

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9589880B2 (en) * 2013-10-09 2017-03-07 Infineon Technologies Ag Method for processing a wafer and wafer structure
CN114570618B (zh) * 2022-02-16 2023-04-21 福建凯达集团有限公司 定点防雾功能的易揭包装袋生产工艺

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2338558A (en) * 1940-10-22 1944-01-04 Interchem Corp Method of making intaglio cylinders
US3589289A (en) * 1966-12-22 1971-06-29 Burroughs Corp Printing members and methods for graphic composition
US4718340A (en) * 1982-08-09 1988-01-12 Milliken Research Corporation Printing method
US4672893A (en) * 1985-03-21 1987-06-16 Paramount Packaging Flexo-gravure printing
US5154121A (en) * 1988-11-09 1992-10-13 Man Roland Druckmaschinen Ag System and method to apply a printing image on a printing machine cylinder having ink accepting receptors or cells, in accordance with electronically furnished image information
DE3938449A1 (de) * 1989-11-18 1991-05-23 Roland Man Druckmasch Druckwerk
DE59009335D1 (de) * 1989-11-18 1995-08-03 Roland Man Druckmasch Verfahren zur Druckvorbereitung eines Druckwerks und dazu verwendbares Druckwerk.
DE4007130C1 (fr) * 1990-03-07 1991-06-27 Kurt Zecher Gmbh, 4790 Paderborn, De
US5370052A (en) * 1993-03-15 1994-12-06 Man Roland Druckmaschinen Ag Method of controlling the quantity of printing ink and reconditioning used anilox rollers
DE19645934A1 (de) * 1996-11-07 1998-05-14 Roland Man Druckmasch Rasterwalze innerhalb eines Auftragswerkes einer Rotationsdruckmaschine
DE19807505A1 (de) * 1998-02-21 1999-08-26 Roland Man Druckmasch Bogenrotationsdruckmaschine mit Druckeinheiten für den Mehrfarbendruck und wenigstens einer Beschichtungseinheit
US6213018B1 (en) * 1999-05-14 2001-04-10 Pcc Artwork Systems Flexographic printing plate having improved solids rendition

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2581227A1 (fr) * 2011-10-14 2013-04-17 Bobst Bielefeld GmbH Rouleau d'encrage et jeux de rouleaux d'encrage pour vérification des couleurs

Also Published As

Publication number Publication date
DE102006031682A1 (de) 2008-01-10
US20080022870A1 (en) 2008-01-31

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