EP0830217B1 - Procede et dispositif permettant de durcir une couche sur un substrat - Google Patents

Procede et dispositif permettant de durcir une couche sur un substrat Download PDF

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Publication number
EP0830217B1
EP0830217B1 EP96919674A EP96919674A EP0830217B1 EP 0830217 B1 EP0830217 B1 EP 0830217B1 EP 96919674 A EP96919674 A EP 96919674A EP 96919674 A EP96919674 A EP 96919674A EP 0830217 B1 EP0830217 B1 EP 0830217B1
Authority
EP
European Patent Office
Prior art keywords
substrate
gas
housing
rinsing
nozzles
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.)
Expired - Lifetime
Application number
EP96919674A
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German (de)
English (en)
Other versions
EP0830217A1 (fr
Inventor
Georg Bolte
Lutz Nölle
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.)
Noelle GmbH
Nolle GmbH
Original Assignee
Noelle GmbH
Nolle 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
Application filed by Noelle GmbH, Nolle GmbH filed Critical Noelle GmbH
Publication of EP0830217A1 publication Critical patent/EP0830217A1/fr
Application granted granted Critical
Publication of EP0830217B1 publication Critical patent/EP0830217B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/0483—Drying combined with cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
    • B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
    • B05D3/065—After-treatment
    • B05D3/066—After-treatment involving also the use of a gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
    • B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
    • B05D3/065—After-treatment
    • B05D3/067—Curing or cross-linking the coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/0403—Drying webs
    • B41F23/0406—Drying webs by radiation
    • B41F23/0409—Ultraviolet dryers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • B41M7/0045—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using protective coatings or film forming compositions cured by mechanical wave energy, e.g. ultrasonics, cured by electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams, or cured by magnetic or electric fields, e.g. electric discharge, plasma
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • B41M7/0081—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
    • F26B3/283—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun in combination with convection

Definitions

  • the invention relates to a device for curing an ink, lacquer, Adhesive or silicone layer, according to the preamble of claim 1.
  • the invention is concerned with the treatment of substances, in particular of dyes which have a double bond as a monomer, which is to be polymerized using UV light. It is known, Polymerize double bonds with electrons or cationically.
  • the treating mixture e.g. a dye a so-called photoinitiator needed.
  • This photoinitiator is used in excess so the polymerization reaction once started by UV light does not result from this breaks off that the dye radical reacts with the diradical oxygen. Accordingly, a relatively high concentration of Photoinitiators worked so that the probability for the dye radical, to meet and enter an oxygen radical become, relatively less than the probability of another To hit monomer with double bond and to radicalize it.
  • Central cylinder machines are known with which on a paper web or applied different colors one after the other on a plastic film each layer is dried before the next layer of paint is applied.
  • UV lamps are used to dry these individual layers of paint used and cooled by air. This is a UV lamp cooled with an outside temperature of approx. 800 ° C by sucking in air, which is led past the lamp.
  • a disadvantage of this Construction is the continuous generation of ozone, the movement of large ones Amounts of dirt particles and the heating of the coated substrate, which is particularly difficult for heat-sensitive plastic films Defects.
  • EP-A-0 161 540 describes a method for hardening a hardenable Silicon layer known that on a paper substrate surface is applied, the layer being carried out in a hardness stage Irradiation substrate with UV light while flushing the UV lamp room is subjected to gas.
  • the UV lamp room is from that Hardening room through which the substrate is led by means of a quartz glass pane separated gas-tight.
  • the cooling gas preferably air
  • Nitrogen as an inert gas is fed separately into the hardening room entered, ensuring that special locks are provided, that the entry of atmospheric oxygen into the hardening room is not possible.
  • US-A-4 143 278 describes a radiation reactor for hardening layers, Colors and the like. Described at what ambient air in the Housing, over the lamps and on the substrate surface and circulates. The use of an inert gas is not intended there. A special cooling device turns the circulating air into heat withdrawn.
  • EP-A-0 589 260 is a flexographic printing machine constructed in a modular design known, on the printing unit, a film made of plastic or Metal is printed with a UV-curing ink.
  • the printed web is fed to a UV radiation and cooling unit, which comprises a cooling cylinder, the inner cooling jacket of cooling water is flowed through.
  • the first step is that the film, which is usually very sensitive to heat and has a thickness of 10 to 50 ⁇ m during the UV irradiation must be cooled.
  • the present invention exists in performing the second step, d. H. the printing and drying / curing process in an atmosphere of purge gas. If If inert gas is used, nitrogen or carbon dioxide is preferred.
  • the purge gas does not necessarily have to be an inert gas, but can be in Depending on the layer to be hardened also dry air, moist air or be another reactive gas.
  • moist air or be another reactive gas for example, there are chemical ones Systems that are not sensitive to oxygen, but sensitive to moisture are.
  • glue on a paper web or a Plastic or aluminum foil are applied, they need water, to be able to react and harden better.
  • a polyamide film on the other hand tends to bind very strong moisture on the surface. As a result then the gas must be chosen so that this film before Printing process, that is, dehumidified before applying the color, so that there are much more favorable conditions than when the color is on a monomolecular moisture film is applied.
  • the proposal according to the invention is particularly at a high speed working flexographic cylinder machine with great advantage applicable, on which, for example, films for food packaging to be completed or where it has to be laminated. It can not only be excellent adhesion of paint to paper / plastic or aluminum foils achieve, but the problem of the unpleasant smell is caused by a significant reduction in the photoinitiator also eliminated because the hardening / drying of the individual layers of paint now takes place in a protective atmosphere and quickly.
  • the Laminar flow including oxygen can also occur in particular Entry of the substrate in the hardness stage in the form of the UV dryer Nitrogen can be replaced, the color on the surface also from that quickly absorbed oxygen is released. According to the invention can more than 80% of the photoinitiators required so far have been dispensed with that there are also significant cost savings in UV curing inks surrender.
  • a housing 1 with side walls 4, 5 is provided.
  • This housing is open at its lower end, which too has an impression cylinder 14 which is a hollow cylinder and the latter Wall coolant passages 17, through which, for example Water can flow.
  • an impression cylinder 14 which is a hollow cylinder and the latter Wall coolant passages 17, through which, for example Water can flow.
  • the side wall 5 with the cylinder surface defines a gap 8
  • a gap 9 is provided; the two columns 8, 9 are shown in the Embodiment approximately 2 mm wide.
  • the rotating cylinder transports a substrate which before entry into the housing 1 as a hardness level has been coated with a layer.
  • Nozzle bodies are provided on the outer surfaces of the side walls 4, 5, wherein between these nozzle bodies 6a, 7a and the surface of the Backing cylinder transporting substrate also provided gaps are the width of columns 8, 9 correspond.
  • a reflector 2 which is in its top area is curved and the rays of a UV lamp 3 directly on the continuous substrate aligns with that applied to the substrate To dry or harden the layer.
  • Both the housing 1 and the Reflector 2 are interspersed with coolant channels 15, 16 so that these parts can be tempered or cooled if through these channels 15, 16 a cooling medium, preferably water, circulates.
  • a purge gas source Q which has a purge gas for the hardness stage feeds in or away from it.
  • a purge gas line extends for this purpose 11 from the purge gas source Q via a gas flow and Flow regulator 10 through an opening 12a in the upper housing wall and ends in a nozzle provided in the reflector 2. So that the purge gas Rinse the space below the reflector 2 and exit from columns 8, 9. Furthermore, one extends from the gas flow and quantity regulator 10 further purge gas line 12 to the nozzle body 6a, so that through the nozzle gap 6 also flushing gas is directed onto the incoming substrate, the Transport direction in Fig. 1 is indicated by an arrow.
  • Another purge gas line 13 leads from the gas flow and quantity regulator to the nozzle body 7a and is connected to a nozzle gap 7.
  • the purge gas can also on the outlet side of the substrate on the latter, especially act on the applied layer.
  • the purge gas out the nozzle gap 7 has an additional effect by being in that of the Reflector 2 surrounding space creates a negative pressure and existing there Draws purge gas from the outlet gap 9.
  • the size of this negative pressure can be adjusted by the controller 10 and a valve V, which in the Purge gas line 11 is arranged.
  • Such a suction effect can also the nozzle gap 6 are exerted, from which purge gas not only on the Layer of the incoming substrate is directed. It is preferred that To make nozzle gaps 6, 7 adjustable in their flow angle, like this is described below.
  • Nozzle bodies 6a and 7a are each on the outer surface of the side walls 4, 5 are located, it is also possible to integrate these bodies in the side walls.
  • a nozzle body 7a is provided, which at the same time as Sun protection screen acts and is glued and screwed to the side wall.
  • the nozzle gap 7 results from the fact that a further nozzle body 18 with Is held on the nozzle body 7a by means of an adjusting screw, wherein this adjusting screw has an enlarged head, the inner edge of a gradation of the nozzle body 18 is present.
  • the nozzle gap 7 is adjustable in width.
  • This Nozzle gap 7 is supplied with purge gas via a channel 20 which is connected to the Purge gas line 13 is in flow connection. 2 is the direction of movement of the substrate, not shown in detail, by an arrow 8 indicated, the substrate through the gap 9 between the nozzle body and Impression cylinder is guided.
  • the controller 10 set the purge gas line 11 to suction operation, while the two purge gas lines 12, 13 the purge gas to the nozzle bodies 6a, 7a direct. In other words, it is up to you to choose and depending possible from the substrate to be treated, the purge gas lines 11, 12 and 13 to work as a pressure or suction line.
  • a relatively high direct radiation angle means correspondingly high ones Power yield of UV light with the disadvantage of possible substrate heating, which is compensated for by appropriate cylinder cooling becomes.
  • the reflected rays are on a water-cooled reflector system been mirrored.
  • the housing is cooled and the Interior can be filled with gas such as Be filled with nitrogen.
  • the usual light shields to protect the personnel are shown in the Embodiment designed so that they work simultaneously as a gas nozzle.
  • the angle of attack is used to achieve a "peeling effect" the gas nozzle adjustable.
  • the gas supply is controlled by the plant operation programmed.
  • the so-called light and gas flushing bar can be independent of the UV lamp unit, i.e. in front of a printing station Removal of a rough surface from oxygen before the paint is applied.
  • gas supply and discharge in the UV lamp is for these variants sensible with a combination of the regulation of the gas composition.
  • An application example is the achievement of a defined gloss level of Varnishes by changing lamp power of at least two in Direction of substrate of successive UV lamps and the targeted Change in the amount of residual oxygen during each lamp run.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • General Engineering & Computer Science (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
  • Wire Bonding (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
  • Coating Apparatus (AREA)

Claims (6)

  1. Dispositif pour durcir une couche d'encre d'impression, de peinture, de colle ou de silicone, dont est recouvert un substrat en papier, en matière plastique, en verre, en bois ou en un métal, comportant un boítier (1), qui est ouvert en direction d'un corps de transport (14) transportant le substrat et qui recouvre le substrat tout en conservant des fentes (8,9) d'entrée et de sortie du substrat, et comportant une lampe à ultraviolet (3) disposée à l'intérieur du boítier et équipée d'un réflecteur (2), qui dirige le rayonnement ultraviolet sur le substrat qui se déplace, et dans lequel au moins une canalisation de gaz de balayage (11) est reliée d'une part à une source de gaz de balayage (Q) et d'autre part à l'espace intérieur du boítier (1) par l'intermédiaire d'une buse (12), caractérisé en ce qu'en dehors de la fente (8) d'entrée du substrat et de la fente (9) de sortie du substrat, il est prévu des buses (6,7) pour le gaz de balayage, qui peuvent être refroidies de préférence par de l'eau et dont les angles de direction du jet sont réglables par rapport au substrat, qui se déplace, et qui sont reliées, selon une liaison fluidique, à un régulateur (10) de la direction et de la quantité du courant de gaz, qu'il est prévu un dispositif de mise en température (17) pour le refroidissement du substrat qui se déplace, que les buses (6, 7) pour le gaz de balayage sont prévues sur les parois latérales (4,5) du boítier et que des canaux de refroidissement (15,16,17) sont disposés dans le boítier (1), dans le réflecteur (2) et dans le corps de transport (14).
  2. Dispositif selon la revendication 1, caractérisé en ce que les buses (6,7) pour le gaz de balayage sont reliées par l'intermédiaire de canalisations (12,13) au régulateur (10) et sont situées à l'extérieur du boítier (1) de sorte qu'on obtient un balayage du substrat par le gaz également avant et après le passage du substrat.
  3. Dispositif selon la revendication 1, caractérisé en ce que les buses (6,7) pour le gaz de balayage sont prévues sous la forme d'écrans de protection pour la lumière, qui sont disposés d'une manière réglable sur les faces extérieures des parois latérales (4,5) du boítier.
  4. Dispositif selon les revendications 1 et 2, caractérisé en ce que les canalisations (11,12,13) pour le gaz peuvent être commutées par le régulateur (10) au choix en tant que canalisations d'évacuation du gaz ou en tant que canalisations d'amenée du gaz.
  5. Dispositif selon la revendication 1, caractérisé en ce qu'il est disposé en tant que composant d'une machine à cylindre central, sur la périphérie d'un cylindre central et est branché respectivement en aval ou en amont d'une unité d'application de revêtement.
  6. Dispositif selon la revendication 1, caractérisé en ce que dans le boítier (1) est prévu un volet d'obturateur, qui est refroidi par de l'eau et est déplaçable entre la lampe à ultraviolet et le substrat.
EP96919674A 1995-05-04 1996-05-06 Procede et dispositif permettant de durcir une couche sur un substrat Expired - Lifetime EP0830217B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19516231 1995-05-04
DE19516231 1995-05-04
PCT/EP1996/001872 WO1996034700A1 (fr) 1995-05-04 1996-05-06 Procede et dispositif permettant de durcir une couche sur un substrat

Publications (2)

Publication Number Publication Date
EP0830217A1 EP0830217A1 (fr) 1998-03-25
EP0830217B1 true EP0830217B1 (fr) 1999-11-24

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EP96919674A Expired - Lifetime EP0830217B1 (fr) 1995-05-04 1996-05-06 Procede et dispositif permettant de durcir une couche sur un substrat

Country Status (7)

Country Link
US (1) US6185840B1 (fr)
EP (1) EP0830217B1 (fr)
JP (1) JPH11504850A (fr)
AT (1) ATE186857T1 (fr)
CA (1) CA2220108A1 (fr)
DE (1) DE59603722D1 (fr)
WO (1) WO1996034700A1 (fr)

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EP1413416A3 (fr) * 2002-10-25 2007-05-02 Air Liquide Deutschland GmbH Dispositif de durcissage par rayonnement
EP2031330A2 (fr) 2007-08-27 2009-03-04 Uviterno AG Dispositif de rayonnement d'un substrat avec un rayonnement UV
EP2192366A2 (fr) 2008-12-01 2010-06-02 Uviterno AG Dispositif de rayonnement d'un substrat
DE102018130279A1 (de) * 2018-11-29 2020-06-04 Koenig & Bauer Ag Bogendruckmaschine mit mindestens einem Druckwerk zum Bedrucken von Druckbogen
DE102018130280A1 (de) * 2018-11-29 2020-06-04 Koenig & Bauer Ag Trocknungseinheit zum Trocknen bedruckter Substrate
DE102016200545B4 (de) 2015-06-05 2022-12-22 Koenig & Bauer Ag Vorrichtung zur Behandlung von bogenförmigem Substrat

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DE10242719A1 (de) 2002-09-13 2004-03-18 Cetelon Lackfabrik Walter Stier Gmbh & Co.Kg Vorrichtung zur Härtung strahlungshärtbarer Beschichtungen
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EP1555122B1 (fr) * 2004-01-16 2011-04-27 Uviterno AG Procédé et dispositif pour imprimer du matériau plat
FR2865418B1 (fr) * 2004-01-28 2006-03-03 Air Liquide Equipement de reticulation ultraviolette sous atmosphere controlee
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CN201587165U (zh) * 2010-01-09 2010-09-22 刘洪生 一种凹印机
CN102285213A (zh) * 2011-05-05 2011-12-21 刘洪生 紫外线干燥灯罩
US9069252B2 (en) 2011-08-26 2015-06-30 E I Du Pont De Nemours And Company Method for preparing a relief printing form
US9097974B2 (en) 2012-08-23 2015-08-04 E I Du Pont De Nemours And Company Method for preparing a relief printing form
US9372407B2 (en) 2013-04-18 2016-06-21 E I Du Pont De Nemours And Company Exposure apparatus and a method for exposing a photosensitive element and a method for preparing a printing form from the photosensitive element
DE102015212762B4 (de) * 2015-07-08 2019-06-19 Koenig & Bauer Ag Trockenvorrichtung
ITUB20159365A1 (it) * 2015-12-22 2017-06-22 Uv Ray S R L Dispositivo per la polimerizzazione di inchiostri e/o vernici in atmosfera inerte
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KR20170058182A (ko) * 2015-11-18 2017-05-26 (주)쎄미시스코 연기 제거를 위한 경사 이송부를 구비한 광 소결장치
DE102016101970A1 (de) 2016-02-04 2017-08-10 Schmid Rhyner Ag Verfahren zum Auftragen von Kunststoffbeschichtungen, Vorrichtung zur Durchführung des Verfahrens und verfahrensgemäß herstellbares beschichtetes Substrat
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EP2031330A2 (fr) 2007-08-27 2009-03-04 Uviterno AG Dispositif de rayonnement d'un substrat avec un rayonnement UV
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EP2192366A2 (fr) 2008-12-01 2010-06-02 Uviterno AG Dispositif de rayonnement d'un substrat
DE102016200545B4 (de) 2015-06-05 2022-12-22 Koenig & Bauer Ag Vorrichtung zur Behandlung von bogenförmigem Substrat
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JPH11504850A (ja) 1999-05-11
US6185840B1 (en) 2001-02-13
CA2220108A1 (fr) 1996-11-07
DE59603722D1 (de) 1999-12-30
WO1996034700A1 (fr) 1996-11-07
ATE186857T1 (de) 1999-12-15
MX9708479A (es) 1998-10-31
EP0830217A1 (fr) 1998-03-25

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