EP3010719A2 - Procédé et dispositif pour imprimer un substrat - Google Patents

Procédé et dispositif pour imprimer un substrat

Info

Publication number
EP3010719A2
EP3010719A2 EP14720498.6A EP14720498A EP3010719A2 EP 3010719 A2 EP3010719 A2 EP 3010719A2 EP 14720498 A EP14720498 A EP 14720498A EP 3010719 A2 EP3010719 A2 EP 3010719A2
Authority
EP
European Patent Office
Prior art keywords
fluid
transfer roller
substrate
printing
roller
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.)
Ceased
Application number
EP14720498.6A
Other languages
German (de)
English (en)
Inventor
Franz Durst
Martin Gillert
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher 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
Application filed by Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP3010719A2 publication Critical patent/EP3010719A2/fr
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/18—Inking arrangements or devices for inking selected parts of printing formes
    • 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
    • B41F31/08—Ducts, containers, supply or metering devices with ink ejecting means, e.g. pumps, nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0813—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line characterised by means for supplying liquid or other fluent material to the roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/28—Spray apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F5/00—Rotary letterpress machines
    • B41F5/24—Rotary letterpress machines for flexographic printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0254—Coating heads with slot-shaped outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2200/00—Printing processes
    • B41P2200/10—Relief printing
    • B41P2200/12—Flexographic printing

Definitions

  • the invention relates to a method and a device for printing a substrate with a printable fluid, in particular with a printing ink.
  • a printing ink is first applied to an anilox roller.
  • an anilox roller In one surface of the anilox roller, about 60 to 500 nap-shaped recesses per cm 2 are provided for receiving the printing ink.
  • the ink in the recesses is then transferred to a plate or a printing form, which is accommodated on a printing form cylinder.
  • the ink is finally printed by the printing forme on the guided over an impression cylinder substrate.
  • the thickness of the ink layer transferred to the substrate depends on the depth, number and configuration of the recesses on the surface of the anilox roller.
  • the object of the invention is to eliminate the disadvantages of the prior art. In particular, a method and a device are to be specified which make it possible to print on a substrate with a reduced outlay.
  • the method and the device should enable a simplified adjustment of a thickness of a fluid layer to be printed on the substrate.
  • This object is achieved by the features 1 and 10.
  • Advantageous embodiments of the invention will become apparent from the features of claims 2 to 9 and 1 1 to 18.
  • a method for printing a substrate with a printable fluid, in particular a printing ink proposed with the following steps:
  • the provision of a multiplicity of different anilox rollers can be dispensed with.
  • a desired thickness of a fluid layer printed on the substrate can be varied, for example, by changing a mass flow of the fluid through a slot nozzle of the slot die tool and / or by changing a rotational speed of the transfer roller. This makes it possible to set a desired color of printed on a substrate color without much effort. The selection and a change of anilox rolls are no longer necessary for this purpose. It can thus be significantly reduced the effort for printing a substrate.
  • a "slot nozzle tool” is understood to mean a tool with which a fluid film having a predetermined thickness can be produced across a width of a slot nozzle.
  • a slot nozzle tool is known, for example, from WO 2010/020594.
  • the slot nozzle is arranged at a predetermined distance from a surface to be coated, here the surface of the transfer roller. Such a distance may be 50 ⁇ to 40.0 cm.
  • fluid is understood to mean a fluid which can be imprinted on a substrate in the printing process. It can be in particular a printing ink or else a fluid for the production of organic semiconductors.
  • substrate is generally understood to mean a material which has a printable, preferably flat, surface.
  • the substrate can be a sheet-like material made of paper, plastic or a textile.
  • the substrate may be a general cargo.
  • the substrate may for example also be made of glass, corrugated board, cardboard or metal.
  • the "printing cliché” can be a cliché that allows for high or low pressure.
  • a width of the slot nozzle of the slot die tool is set such that a thickness of the fluid layer applied to the transfer roller is within a predetermined range across a width of the transfer roller.
  • the thickness of the fluid layer is advantageously in the range of 0.2 ⁇ to 2.0 mm, preferably 1 ⁇ to 500 ⁇ .
  • a thickness of an ink layer applied to the transfer roller By varying a thickness of an ink layer applied to the transfer roller, a hue can be adjusted.
  • a thickness of the applied to the transfer roller fluid layer by means of a provided for conveying the fluid conveyor, for. As a pump or a pressure vessel controlled. With the conveyor, a mass flow of the exiting through the slot nozzle fluid can be varied.
  • the thickness of the fluid layer can be varied by the rotational speed of the transfer roller. This also allows, for example, a simple and quick adjustment of a hue.
  • the fluid is supplied to the slot nozzle tool via at least one feed channel and conveyed from there through a plurality of fan-shaped to the slot nozzle extending distribution channels, wherein a cross section of the distribution channels from the feed channel to the slot nozzle increases.
  • By providing the fan-shaped to the slot nozzle extending distribution channels and their cross-sectional widening is achieved that the fluid is present at substantially the same pressure over the entire width of the slot nozzle at the slot nozzle.
  • the production of a fluid film having a substantially constant thickness can be achieved.
  • a thickness of the fluid layer applied to the transfer roller also has a substantially constant thickness over its width. This ensures a consistent print quality over the entire width of the substrate to be printed.
  • downstream of a contact area between transfer and pressure roller still adhering to the transfer roller fluid residues are removed and fed to a collecting container.
  • the fluid residues cover on the transfer roller those areas which have not been transferred to the printing plate.
  • at least one doctor applied to the transfer roller can be used.
  • the substrate is pressed by means of a rotating counter-pressure roller against the pressure roller.
  • a flexible sheet material such as a plastic sheet, a paper sheet, a textile sheet or the like is used as the substrate.
  • the counter-pressure roller is expediently driven. Ie.
  • the substrate can be transported simultaneously with the counterpressure roller.
  • the substrate printed with the fluid is dried.
  • a drying device can be provided downstream of the pressure roller.
  • an apparatus for printing a substrate with a printable fluid comprising a slot nozzle tool for generating and applying a fluid film to a rotatable transfer roller, a rotatable and a printing plate in contact with the transfer roller having printing roller for printing the transfer of the transfer roller on the printing plate fluid to a pressed against the substrate.
  • the proposed device makes it possible to easily set a hue. For this it is not necessary to replace about the transfer roller.
  • a thickness of a fluid layer applied to the transfer roller by means of the slit nozzle tool can be adjusted by changing the mass flow through the slit nozzle and / or changing a rotational speed of the transfer roller.
  • a device for adjusting a width of the slot nozzle of the slot nozzle tool is provided. The choice of a suitable width of the slot nozzle depends on the fluid. If the fluid contains, for example, pigments, a width of the slot nozzle is adjusted so that it is not blocked by pigments or pigment agglomerates.
  • the device for adjusting the width of the slot nozzle may be a device which is to be operated manually, but in particular may also be an electrically operated device.
  • a thickness of the fluid layer applied to the transfer roller can be measured across the width of the transfer roller with a measuring device.
  • the mass flow of the fluid through the slot nozzle can be automatically regulated by means of a suitable regulation, so that a fluid layer having a uniform thickness is applied across the width of the transfer roller. Also, the thickness of the fluid layer as a whole can be adjusted.
  • a conveying device for conveying the fluid film to the slot nozzle tool.
  • the conveyor is expediently designed so that so that the fluid can be promoted with a variable mass flow to the slot nozzle tool.
  • the mass flow generated by the conveying device can be controlled or regulated as a function of a thickness of the fluid layer applied to the transfer roller.
  • a conventional slot nozzle tool with which a fluid film with a constant thickness can be produced across the width of the transfer roller.
  • a slot nozzle tool is known, for example, from WO 2010/020594 A1, the disclosure of which is hereby incorporated by reference.
  • a doctor blade is provided downstream of a contact region between the transfer and pressure rollers for removing fluid residues still adhering to the transfer roller. Downstream- If the squeegee, a collecting container for collecting the removed with the doctor blade from the transfer roller fluid may be provided downstream.
  • a counter-pressure roller for pressing the substrate against the pressure roller or the printing plate.
  • the web-shaped substrate is guided over the counter-pressure roller and thus pressed against the pressure roller, so that the fluid is transferred from the printing plate to the substrate.
  • a means for driving the platen roller may be provided.
  • the counter-pressure roller also serves as a transport roller.
  • Downstream of the pressure roll may be provided means for drying the fluid-printed substrate.
  • An embodiment of the invention will be explained in more detail with reference to the drawing.
  • the single FIGURE schematically shows a device for printing on a substrate 1 unwound from a supply roll (not shown here).
  • the substrate 1 may be, for example, a plastic film, a paper web, a textile web or the like.
  • the reference numeral 2 denotes a deflection roller, with which the substrate 1 is forced into contact with a counter-pressure roller 3.
  • the reference numeral 4 designates a slot nozzle tool, which is arranged above a surface of the transfer roller 5.
  • the transfer roller 5 may be made of metal.
  • the surface of the transfer roller 5 is advantageously smooth. It can have a mean roughness Ra of at most 0.5 ⁇ m, preferably at most 0.3 ⁇ m, particularly preferably at most 0.1 ⁇ m.
  • the surface of the transfer roller 5 may also be formed rough. It can also be made of an elastic plastic, rubber, metal or ceramic.
  • the transfer roller 5 is in contact with a rotatable pressure roller 6 arranged parallel thereto, on the surface of which a printing plate 7 is provided.
  • the pressure roller 6 is in turn in contact with the counter-pressure roller 3 arranged parallel thereto.
  • the reference numeral 8 designates a pump which is connected to the slot nozzle tool 4 via a line 9 for supplying fluid F.
  • a squeegee 10 Approximately opposite the slot nozzle tool 4 is a squeegee 10 to the transfer roller 5 at.
  • the doctor blade 10 is a collecting container 1 1 downstream.
  • the function of the device is the following:
  • fluid reservoir fluid F is supplied via the line 9 to the slot nozzle tool 4 by means of the pump 8.
  • a fluid film is generated, which extends across the width of the transfer roller 5 away.
  • the fluid film falls from the slit nozzle 13 to the surface of the transfer roller 5, where it forms a fluid layer 12.
  • a thickness of the fluid layer 12 can be adjusted by changing the mass flow through the slit nozzle 13 and / or by varying a rotational speed of the transfer roller 5 ,
  • the fluid layer 12 is subsequently transferred to the pressure plate 7 mounted on the surface of the pressure roller 6. Remaining fluid residues are removed by means of the doctor blade 10 from the transfer roller 5 and fed to the collecting container 11.
  • the transferred to the printing plate 7 fluid layer 12 is finally printed on the means of the platen roller 3 supplied substrate 1.
  • the printed substrate is referred to, which after printing a (not shown here) drying device can be supplied.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Printing Methods (AREA)

Abstract

L'invention concerne un procédé pour imprimer un substrat (1) avec un fluide (F) propre à l'impression, en particulier une encre, comportant les étapes suivantes : transport du fluide (F) vers un outil à buse plate (4), application d'un film de fluide, généré au moyen de l'outil à buse plate (4), sur un cylindre de transfert (5) rotatif, transfert du fluide (F) depuis le cylindre de transfert (5) sur un cylindre d'impression (6) rotatif, en contact avec ce dernier et comportant une forme imprimante (7), et impression du fluide (F) depuis la forme imprimante (7) sur le substrat (1).
EP14720498.6A 2013-03-28 2014-03-28 Procédé et dispositif pour imprimer un substrat Ceased EP3010719A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102013205678 2013-03-28
DE102013206588.4A DE102013206588A1 (de) 2013-03-28 2013-04-12 Verfahren und Vorrichtung zum Bedrucken eines Substrats
PCT/EP2014/056307 WO2014154873A2 (fr) 2013-03-28 2014-03-28 Procédé et dispositif pour imprimer un substrat

Publications (1)

Publication Number Publication Date
EP3010719A2 true EP3010719A2 (fr) 2016-04-27

Family

ID=51519826

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14720498.6A Ceased EP3010719A2 (fr) 2013-03-28 2014-03-28 Procédé et dispositif pour imprimer un substrat

Country Status (4)

Country Link
US (1) US20160052258A1 (fr)
EP (1) EP3010719A2 (fr)
DE (1) DE102013206588A1 (fr)
WO (1) WO2014154873A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10102040B2 (en) 2016-06-29 2018-10-16 Amazon Technologies, Inc Adjusting variable limit on concurrent code executions
CN109772639B (zh) * 2019-02-14 2023-12-08 湖南固虹机械制造有限公司 一种滚动式传动的环保树脂瓦生产设备

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1107247B (de) * 1956-02-15 1961-05-25 Fischer & Krecke Kg Farbauftragsvorrichtung fuer Rotationsdruckmaschinen, insbesondere Anilindruckmaschinen
US3766856A (en) * 1972-05-30 1973-10-23 Faustel Inc Ink applicator means for printing press
US5129320A (en) * 1991-03-27 1992-07-14 Rockwell International Corporation Method for controlling viscous ink application in a printing press
DE4208295A1 (de) * 1992-03-16 1993-09-23 Roland Man Druckmasch Einfaerbevorrichtung fuer eine rasterwalze
US5957051A (en) * 1997-06-30 1999-09-28 Atwater; Richard G. Single width press with digital ink injection
DE102005035701A1 (de) * 2005-07-27 2007-02-08 Hauni Maschinenbau Ag Druckwerk der Tabak verarbeitenden Industrie
DE102008041423B4 (de) 2008-08-21 2015-04-16 Fmp Technology Gmbh Fluid Measurements & Projects Beschichtungswerkzeug zum Auftragen eines Flüssigkeitsfilms auf ein Substrat

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2014154873A2 *

Also Published As

Publication number Publication date
US20160052258A1 (en) 2016-02-25
DE102013206588A1 (de) 2014-10-02
WO2014154873A2 (fr) 2014-10-02
WO2014154873A3 (fr) 2014-12-11

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