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EP0161540A1 - Device for hardening flat materials from compounds, and compositions hardenable by U.V. radiation - Google Patents

Device for hardening flat materials from compounds, and compositions hardenable by U.V. radiation Download PDF

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Publication number
EP0161540A1
EP0161540A1 EP85104814A EP85104814A EP0161540A1 EP 0161540 A1 EP0161540 A1 EP 0161540A1 EP 85104814 A EP85104814 A EP 85104814A EP 85104814 A EP85104814 A EP 85104814A EP 0161540 A1 EP0161540 A1 EP 0161540A1
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EP
European Patent Office
Prior art keywords
chamber
radiation
hardening
radiation source
lock
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Withdrawn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
EP85104814A
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German (de)
French (fr)
Inventor
Christian Dr. Weitemeyer
Jürgen Jachmann
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.)
Evonik Operations GmbH
Original Assignee
TH Goldschmidt AG
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Filing date
Publication date
Application filed by TH Goldschmidt AG filed Critical TH Goldschmidt AG
Publication of EP0161540A1 publication Critical patent/EP0161540A1/en
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/14—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects using gases or vapours other than air or steam, e.g. inert gases
    • 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
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/0033—Heating devices using lamps
    • H05B3/0038—Heating devices using lamps for industrial applications
    • 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
    • B05D2252/00—Sheets
    • B05D2252/02—Sheets of indefinite length

Definitions

  • the invention relates to a device for curing flat materials, in particular layers of UV-radiation-curable compounds or preparations applied to carrier webs, which have a chamber with a radiation source arranged in it, an inlet lock arranged upstream of the chamber, and optionally an exit lock, and optionally an exit lock and Has means for transporting the material to be guided and irradiated through the device.
  • the material to be cured can be supplied to the radiation source in the form of a layer applied to a carrier web or in the form of plates or other flat shaped bodies.
  • the products cure under the action of the radiation in a short time, so that it is possible to continuously pass the material to be cured on a transport device under an appropriate radiation source.
  • Examples of such compounds curable by radiation are acrylic or methacrylic acid esters and others. described in DE-OS 29 48 708.
  • Such a device is described in U.S. Patent 3,936,950.
  • This device consists of an irradiation chamber in which the radiation source is accommodated, a tunnel-like introductory lock arranged in front of the irradiation chamber and an execution tunnel which is located behind the irradiation chamber.
  • the inert gas is blown through a slit-shaped nozzle at an angle of 45 to 80 ° against the surface of the material being passed at a high flow velocity to ensure that the air layer on the surface of the material to be hardened is stripped off.
  • the amount of heat developed by the radiation source is also dissipated by the inert gas. It is therefore only possible to use radiation sources which generate relatively little heat and accept that these radiation sources are less effective, i.e. that the throughput speed of products to be cured is relatively limited. The use of more effective radiation sources requires an economically unacceptable throughput of inert gas to remove the heat. In addition, the amount of heat is removed over the surface of the material to be cured or cured. Are there any volatile components in the material to be hardened, e.g. Residual solvent, these are swirled with the inert gas in the radiation chamber and can lead to the formation of an annoying precipitate on the lamp body or on reflectors, which are attached behind the radiation source.
  • the invention has for its object to provide a device. in which the curing process can take place in the presence of the smallest possible amounts of inert gas and in which the radiation chamber, in particular the radiation source and the radiation reflector, cannot be contaminated in contact with gaseous products originating from the material to be cured. In particular, it should be possible to use highly effective radiation sources.
  • the device according to the invention is characterized in that the chamber 1 containing the radiation source 2 has one or more feed lines 6, 7 and one or more discharge lines 8 for a gaseous coolant and gas-tight from the hardening chamber 28, but permeable to the radiation causing the hardening, is separated.
  • the essence of the invention is therefore to separate the chamber 1 with the radiation source 2 from the hardening space 28 which has the material to be irradiated.
  • This will make the inert gas, e.g. Nitrogen, the volume of the hardening chamber 28 to be acted upon, which is traversed by the material to be irradiated, is substantially reduced, and it is additionally achieved that the chamber 1 with the radiation source 2 can be cooled with air flowing through instead of with inert gas.
  • the radiation unit is thus divided into two spatially limited parts, namely into the actual radiation chamber 1 and the hardening chamber 28 to which inert gas is applied. This also enables the separate temperature control of both rooms.
  • the chamber 1 is closed with a disk 9 made of quartz glass.
  • a filter disk 9 which is selective with regard to the radiation passage. This is particularly advantageous when curing radiation-curable compounds or preparations on a colored or decoratively printed carrier.
  • the filter disc is selected in terms of its radiation permeability so that only the rays causing the hardening are transmitted, but fading or discoloration of the colored carrier web is avoided. Suitable filter disks are known to the person skilled in the art and are commercially available.
  • FIG. 1 An exemplary embodiment of the device according to the invention is shown schematically in FIG. 1.
  • the chamber is designated 1.
  • a radiation source 2 in the chamber 1.
  • Suitable radiation sources are, for example, medium-pressure or low-pressure mercury lamps. Behind the radiation source 2 is a reflect Tor 24 attached, the reflective surface is formed so that the surface located under the chamber 1 is irradiated as evenly as possible.
  • the lamp is preferably located at the focal point of a parabolic reflector 24.
  • the radiation source 2 is located at one focus of an ellipsoidal reflector 24.
  • the material to be hardened should then preferably be guided through the second focal point.
  • Supply lines 6 and 7 for the cooling gas, preferably air, for cooling the radiation source 2 lead into the side walls of the chamber 1.
  • the cooling gas can be guided through baffles 27 in the chamber 1.
  • the heated cooling gas is withdrawn from the chamber 1 through the discharge line 8.
  • the chamber 1 is separated from the hardening chamber in a gas-impermeable manner by the radiation-permeable disk 9.
  • this disk 9 can consist of quartz glass or of a filter which is selectively permeable to the radiation.
  • the chamber 1 is preceded by an entry lock 3, which is divided into lock chambers 11, 12 and 13 by partitions 20, 21, 22, 23.
  • Inert gas in particular nitrogen, is blown into the lock chamber 12 through a feed line 10. It is of course also possible to also introduce nitrogen into the lock chambers 11 and 13 or to provide a larger number of sealing chambers.
  • the structural design of such entrance locks and the partition walls 20, 21, 22, 23 designed as non-contact seals is known from the prior art and is not the subject of the present invention.
  • An outlet lock 4 can be arranged downstream of the chamber 1. However, this is not absolutely necessary.
  • the exit lock 4 consists of the lock chambers 15, 16 and 17, one of the lock chambers, in the example of FIG. 1 the chamber 16, being supplied with nitrogen via a feed line 14. It is advisable to supply the entry lock 3 with a larger amount of nitrogen than the exit lock 4 in order to ensure that the entry lock 3 prevents the entry of atmospheric oxygen.
  • the product to be cured is passed under the curing device described.
  • the transport speed is adapted to the hardening speed.
  • the carrier web 5 with the layer 25 to be cured can be guided past the curing device via transport and / or deflection rollers 18, 19.
  • the product to be hardened does not form a coherent film, but rather is present in shaped, individual pieces, these can be placed on the endless conveyor belt 26.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Coating Apparatus (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

A device for hardening flat materials, especially layers applied to carrier tracks of compounds or compositions which can be hardened by UV radiation, which device has a chamber with a radiation source arranged therein, an inlet gate which is arranged in front of the chamber and is subjected to inert gas, and, if required, an outlet gate and a means for transportation of the material to be passed through the device and irradiated, the chamber 1, containing the radiation source 2, having one or more inlet lines 6, 7 and one or more outlet lines 8 for a gaseous coolant and being separated from the hardening space 28 in a manner which is gas-proof but which is permeable to the radiation causing the hardening. By separating the chamber 1, with the radiation source 2, from the hardening space 28 it is possible to cool the chamber with air and to regulate the temperature control of the radiation chamber and the hardening space separately. <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zum Aushärten von flächigen Werkstoffen, insbesondere auf Trägerbahnen aufgebrachten Schichten aus durch UV-Strahlung härtbaren Verbindungen oder Zubereitungen, welche eine Kammer mit einer in ihr angeordneten Strahlungsquelle, eine der Kammer vorgeordnete, mit Inertgas beaufschlagte Eintrittsschleuse und gegebenenfalls eine Austrittsschleuse sowie Mittel zum Transport des durch die Vorrichtung zu führenden und zu bestrahlenden Gutes aufweist.The invention relates to a device for curing flat materials, in particular layers of UV-radiation-curable compounds or preparations applied to carrier webs, which have a chamber with a radiation source arranged in it, an inlet lock arranged upstream of the chamber, and optionally an exit lock, and optionally an exit lock and Has means for transporting the material to be guided and irradiated through the device.

Aus dem Stand der Technik sind Verbindungen oder Zubereitungen bekannt, welche unter der Einwirkung von UV-Strahlung aushärten. Das auszuhärtende Gut kann dabei der Strahlungsquelle in Form einer auf einer Trägerbahn aufgebrachten Schicht oder in Form von Platten oder anderen flächigen Formkörpern zugeführt werden. Die Produkte härten unter der Einwirkung der Strahlung in kurzer Zeit aus, so daß es möglich ist, das zu härtende Gut kontinuierlich auf einer Transportvorrichtung unter einer entsprechenden Strahlungsquelle vorbeizuführen.Compounds or preparations which cure under the action of UV radiation are known from the prior art. The material to be cured can be supplied to the radiation source in the form of a layer applied to a carrier web or in the form of plates or other flat shaped bodies. The products cure under the action of the radiation in a short time, so that it is possible to continuously pass the material to be cured on a transport device under an appropriate radiation source.

Beispiele solcher durch Strahlung, insbesondere UV-Strahlung, härtbaren Verbindungen sind Acryl- oder Methacrylsäureester und u.a. in der DE-OS 29 48 708 beschrieben.Examples of such compounds curable by radiation, in particular UV radiation, are acrylic or methacrylic acid esters and others. described in DE-OS 29 48 708.

Die Aushärtung solcher Verbindungen wird durch Sauerstoff, wie z.B. durch den in der Luft enthaltenen Sauerstoff, inhibiert oder zumindest beeinträchtigt. Die Aushärtung erfolgt deshalb entsprechend dem Stand der Technik in einer Bestrahlungsvorrichtung, welche mit Inertgas, vorzugsweise Stickstoff, beaufschlagt ist.The curing of such compounds is inhibited or at least impaired by oxygen, such as, for example, the oxygen contained in the air. Curing is therefore carried out in accordance with the State of the art in an irradiation device to which inert gas, preferably nitrogen, is applied.

Eine solche Vorrichtung ist in der US-PS 3 936 950 beschrieben. Diese Vorrichtung besteht aus einer Bestrahlungskammer, in welcher die Strahlungsquelle untergebracht ist, einer vor der Bestrahlungskammer angeordneten, tunnelartigen Einführungsschleuse und einem Ausführungstunnel, welcher sich hinter der Bestrahlungskammer befindet. Das Inertgas wird dabei durch eine schlitzförmige Düse in einem Winkel von 45 bis 80° gegen die Oberfläche des durchlaufenden Gutes mit hoher Anströmgeschwindigkeit geblasen, um sicherzustellen, daß die auf der Oberfläche des auszuhärtenden Gutes befindliche Luftschicht abgestreift wird.Such a device is described in U.S. Patent 3,936,950. This device consists of an irradiation chamber in which the radiation source is accommodated, a tunnel-like introductory lock arranged in front of the irradiation chamber and an execution tunnel which is located behind the irradiation chamber. The inert gas is blown through a slit-shaped nozzle at an angle of 45 to 80 ° against the surface of the material being passed at a high flow velocity to ensure that the air layer on the surface of the material to be hardened is stripped off.

Bei den nach dem Stand der Technik bekannten Vorrichtungen wird-die von der Strahlungsquelle entwickelte Wärmemenge ebenfalls durch das Inertgas abgeführt. Man kann deshalb nur solche Strahlungsquellen verwenden, welche verhältnismäßig wenig Wärme entwickeln und nimmt in Kauf, daß diese Strahlungsquellen weniger wirksam sind, d.h., daß die Durchlaufgeschwindigkeit von zu härtenden Produkten relativ begrenzt ist. Die Verwendung wirksamerer Strahlungsquellen bedingt einen wirtschaftlich nicht mehr tragbaren Durchsatz von Inertgas zur Abführung der Wärme. Außerdem wird hierbei die Wärmemenge über die Oberfläche des auszuhärtenden oder ausgehärteten Gutes abtransportiert. Befinden sich in dem zu härtenden Gut noch flüchtige Bestandteile, wie z.B. Lösungsmittelreste, werden diese mit dem Inertgas in der Bestrahlungskammer verwirbelt und können zur Bildung eines störenden Niederschlags auf dem Lampenkörper oder auf Reflektoren führen, die hinter der Strahlungsquelle angebracht sind.In the devices known from the prior art, the amount of heat developed by the radiation source is also dissipated by the inert gas. It is therefore only possible to use radiation sources which generate relatively little heat and accept that these radiation sources are less effective, i.e. that the throughput speed of products to be cured is relatively limited. The use of more effective radiation sources requires an economically unacceptable throughput of inert gas to remove the heat. In addition, the amount of heat is removed over the surface of the material to be cured or cured. Are there any volatile components in the material to be hardened, e.g. Residual solvent, these are swirled with the inert gas in the radiation chamber and can lead to the formation of an annoying precipitate on the lamp body or on reflectors, which are attached behind the radiation source.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zu schaffen. in der der Härtungsvorgang in Gegenwart möglichst geringer Mengen Inertgas erfolgen kann und bei der die Strahlungskammer, insbesondere die Strahlungsquelle und der Strahlungsreflektor, nicht in Kontakt mit gasförmigen, von dem zu härtenden Gut herrührenden Produkten verunreinigt werden können. Es soll insbesondere möglich sein, hochwirksame Strahlungsquellen zu verwenden.The invention has for its object to provide a device. in which the curing process can take place in the presence of the smallest possible amounts of inert gas and in which the radiation chamber, in particular the radiation source and the radiation reflector, cannot be contaminated in contact with gaseous products originating from the material to be cured. In particular, it should be possible to use highly effective radiation sources.

Die erfindungsgemäße Vorrichtung ist dadurch gekennzeichnet, daß die die Strahlungsquelle'2 enthaltende Kammer 1 eine oder mehrere Zuleitungen 6, 7 und eine oder mehrere Ableitungen 8 für ein gasförmiges Kühlmittel aufweist und von dem Härtungsraum 28 gasdicht, aber für die die Härtung verursachende Strahlung durchlässig, getrennt ist.The device according to the invention is characterized in that the chamber 1 containing the radiation source 2 has one or more feed lines 6, 7 and one or more discharge lines 8 for a gaseous coolant and gas-tight from the hardening chamber 28, but permeable to the radiation causing the hardening, is separated.

Das Wesen der Erfindung besteht somit darin, -die Kammer 1 mit der Strahlungsquelle 2 gegenüber dem das zu bestrahlende Gut aufweisenden Härtungsraum 28 abzutrennen. Hierdurch wird das mit dem Inertgas, z.B. Stickstoff, zu beaufschlagende Volumen des Härtungsraumes 28, das von dem zu bestrahlenden Gut durchlaufen wird, wesentlich verringert, und es wird zusätzlich erreicht, daß die Kammer 1 mit der Strahlungsquelle 2 statt mit Inertgas mit durchströmender Luft gekühlt werden kann. Die Bestrahlungseinheit wird somit in zwei räumlich begrenzte Teile aufgeteilt, nämlich in die eigentliche Strahlungskammer 1 und den mit Inertgas beaufschlagten Härtungsraum 28. Dies ermöglicht außerdem die getrennte Temperaturführung beider Räume.The essence of the invention is therefore to separate the chamber 1 with the radiation source 2 from the hardening space 28 which has the material to be irradiated. This will make the inert gas, e.g. Nitrogen, the volume of the hardening chamber 28 to be acted upon, which is traversed by the material to be irradiated, is substantially reduced, and it is additionally achieved that the chamber 1 with the radiation source 2 can be cooled with air flowing through instead of with inert gas. The radiation unit is thus divided into two spatially limited parts, namely into the actual radiation chamber 1 and the hardening chamber 28 to which inert gas is applied. This also enables the separate temperature control of both rooms.

In einer bevorzugten Ausführungsform der erfindungsgemäßen Vorrichtung ist die Kammer 1 mit einer Scheibe 9 aus Quarzglas abgeschlossen. Es ist jedoch auch möglich, die Kammer 1 mit einer Filterscheibe 9 vom Härtungsraum 28 zu trennen, welche in bezug auf den Strahlendurchtritt selektiv ist. Dies ist insbesondere dann von Vorteil, wenn man strahlungshärtbare Verbindungen oder Zubereitungen auf einem farbigen oder dekorativ bedruckten Träger aushärtet. Die Filterscheibe wird dabei in ihrer Strahlungsdurchlässigkeit so ausgewählt, daß nur die die Härtung bewirkenden Strahlen durchgelassen werden, jedoch ein Ausbleichen oder Verfärben der eingefärbten Trägerbahn vermieden wird. Geeignete Filterscheiben sind dem Fachmann bekannt und im Handel erhältlich.In a preferred embodiment of the device according to the invention, the chamber 1 is closed with a disk 9 made of quartz glass. However, it is also possible to separate the chamber 1 from the hardening space 28 with a filter disk 9, which is selective with regard to the radiation passage. This is particularly advantageous when curing radiation-curable compounds or preparations on a colored or decoratively printed carrier. The filter disc is selected in terms of its radiation permeability so that only the rays causing the hardening are transmitted, but fading or discoloration of the colored carrier web is avoided. Suitable filter disks are known to the person skilled in the art and are commercially available.

Eine beispielhafte Ausführungsform der erfindungsgemäßen Vorrichtung ist in Fig. 1 schematisch dargestellt. Dabei ist die Kammer mit 1 bezeichnet. In der Kammer 1 befindet sich eine Strahlungsquelle 2. Geeignete Strahlungsquellen sind z.B. Quecksilbermitteldruck- oder -niederdrucklampen. Hinter der Strahlungsquelle 2 ist ein Reflektor 24 angebracht, dessen reflektierende Fläche so ausgebildet ist, daß die unter der Kammer 1 befindliche Fläche möglichst gleichmäßig bestrahlt wird. Die Lampe befindet sich vorzugsweise im Brennpunkt eines parabolischen Reflektors 24. In einer anderen Ausführungsform befindet sich die Strahlungsquelle 2 in einem Brennpunkt eines ellipsoiden Reflektors 24.. Das zu härtende Gut soll dann vorzugsweise durch den zweiten Brennpunkt geführt werden. In die Seitenwände der Kammer 1 führen Zuleitungen 6 und 7 für das Kühlgas, vorzugsweise Luft, zur Kühlung der Strahlungsquelle 2. Das Kühlgas kann dabei durch Leitbleche 27 in der Kammer 1 geführt werden. Das erwärmte Kühlgas wird durch die Ableitung 8 aus der Kammer 1 abgezogen. Die Kammer 1 ist durch die strahlungsdurchlässige Scheibe 9 von dem Härtungsraum gasundurchlässig getrennt. Diese Scheibe 9 kann, wie oben ausgeführt, aus Quarzglas oder aus einem für die Strahlung selektiv durchlässigen Filter bestehen.An exemplary embodiment of the device according to the invention is shown schematically in FIG. 1. The chamber is designated 1. There is a radiation source 2 in the chamber 1. Suitable radiation sources are, for example, medium-pressure or low-pressure mercury lamps. Behind the radiation source 2 is a reflect Tor 24 attached, the reflective surface is formed so that the surface located under the chamber 1 is irradiated as evenly as possible. The lamp is preferably located at the focal point of a parabolic reflector 24. In another embodiment, the radiation source 2 is located at one focus of an ellipsoidal reflector 24. The material to be hardened should then preferably be guided through the second focal point. Supply lines 6 and 7 for the cooling gas, preferably air, for cooling the radiation source 2 lead into the side walls of the chamber 1. The cooling gas can be guided through baffles 27 in the chamber 1. The heated cooling gas is withdrawn from the chamber 1 through the discharge line 8. The chamber 1 is separated from the hardening chamber in a gas-impermeable manner by the radiation-permeable disk 9. As stated above, this disk 9 can consist of quartz glass or of a filter which is selectively permeable to the radiation.

Der Kammer 1 ist eine Eintrittsschleuse 3 vorgeordnet, welche durch Trennwände 20, 21, 22, 23 in Schleusenkammern 11, 12 und 13 unterteilt ist. In die Schleusenkammer 12 wird durch eine Zuleitung 10 Inertgas, insbesondere Stickstoff, eingeblasen. Es ist natürlich auch möglich, in die Schleusenkammern 11 und 13 ebenfalls Stickstoff einzuleiten oder eine größere Anzahl von Dichtkammern vorzusehen. Die konstruktive Ausgestaltung derartiger Eintrittsschleusen und der als berührungsfreie Dichtungen ausgebildeten Trennwände 20, 21, 22, 23 ist aus dem Stand der Technik bekannt und nicht Gegenstand vorliegender Erfindung.The chamber 1 is preceded by an entry lock 3, which is divided into lock chambers 11, 12 and 13 by partitions 20, 21, 22, 23. Inert gas, in particular nitrogen, is blown into the lock chamber 12 through a feed line 10. It is of course also possible to also introduce nitrogen into the lock chambers 11 and 13 or to provide a larger number of sealing chambers. The structural design of such entrance locks and the partition walls 20, 21, 22, 23 designed as non-contact seals is known from the prior art and is not the subject of the present invention.

Der Kammer 1 kann eine Austrittsschleuse 4 nachgeordnet sein. Jedoch ist dies nicht unbedingt erforderlich. In dem in der Fig. 1 dargestellten Beispiel besteht die Austrittsschleuse 4 aus den Schleusenkammern 15, 16 und 17, wobei einer der Schleusenkammern, im Beispiel der Fig. 1 der Kammer 16, über eine Zuleitung 14 Stickstoff zugeführt wird. Es empfiehlt sich, der Eintrittsschleuse 3 eine größere Menge Stickstoff als der Austrittsschleuse 4 zuzuführen, um sicherzustellen, daß der Zutritt von Luftsauerstoff durch die Eintrittsschleuse 3 verhindert wird.An outlet lock 4 can be arranged downstream of the chamber 1. However, this is not absolutely necessary. In the example shown in FIG. 1, the exit lock 4 consists of the lock chambers 15, 16 and 17, one of the lock chambers, in the example of FIG. 1 the chamber 16, being supplied with nitrogen via a feed line 14. It is advisable to supply the entry lock 3 with a larger amount of nitrogen than the exit lock 4 in order to ensure that the entry lock 3 prevents the entry of atmospheric oxygen.

Das zu härtende Produkt wird unter der beschriebenen Härtungsvorrichtung vorbeigeführt. Die Transportgeschwindigkeit wird dabei der Härtungsgeschwindigkeit angepaßt. Hat das zu härtende Produkt dabei die Form einer auf einem Träger aufgebrachten Schicht, kann die Trägerbahn 5 mit der zu härtenden Schicht 25 über Transport- und/oder Umlenkrollen 18, 19 unter der Härtungsvorrichtung vorbeigeführt werden. So ist es beispielsweise möglich, eine Trägerbahn aus Papier mittels dosierten Walzenauftrages mit einer härtbaren Siliconharzschicht zu beschichten, sie kontinuierlich auszuhärten und das beschichtete Papier mit der nach der Aushärtung nicht mehr klebrigen, abhäsiven Siliconharzschicht aufzuwickeln.The product to be cured is passed under the curing device described. The transport speed is adapted to the hardening speed. If the product to be cured has the form of a layer applied to a carrier, the carrier web 5 with the layer 25 to be cured can be guided past the curing device via transport and / or deflection rollers 18, 19. For example, it is possible to coat a paper carrier web with a curable silicone resin layer by metered roller application, to cure it continuously, and to wind the coated paper with the abhesive silicone resin layer that is no longer tacky after curing.

Bildet das zu härtende Produkt keinen zusammenhängenden Film, sondern liegt es in geformten, einzelnen Stücken vor, kann man diese auf das endlose Transportband 26 auflegen.If the product to be hardened does not form a coherent film, but rather is present in shaped, individual pieces, these can be placed on the endless conveyor belt 26.

Claims (3)

1. Vorrichtung zum Aushärten von flächigen Werkstoffen, insbesondere auf Trägerbahnen aufgebrachten Schichten aus durch UV-Strahlung härtbaren Verbindungen oder Zubereitungen, welche eine Kammer mit einer in ihr angeordneten Strahlungsquelle, eine der Kammer vorgeordnete, mit Inertgas beaufschlagte Eintrittsschleuse und gegebenenfalls eine Austrittsschleuse sowie Mittel zum Transport des durch die Vorrichtung zu führenden und zu bestrahlenden Gutes aufweist, dadurch gekennzeichnet, daß die die Strahlungsquelle (2) enthaltende Kammer (1) eine oder mehrere Zuleitungen (6, 7) und eine oder mehrere Ableitungen (8) für ein gasförmiges Kühlmittel aufweist und von dem Härtungsraum (28) gasdicht, aber für die die Härtung verursachende Strahlung durchlässig, getrennt ist.1.Device for hardening flat materials, in particular layers of UV-radiation-curable compounds or preparations applied to carrier webs, which have a chamber with a radiation source arranged in it, an inlet lock arranged upstream of the chamber and possibly an inert lock and an exit lock as well as means for Transport of the material to be guided and irradiated by the device, characterized in that the chamber (1) containing the radiation source (2) has one or more supply lines (6, 7) and one or more discharge lines (8) for a gaseous coolant and is gas-tight from the hardening space (28), but is transparent to the radiation causing the hardening. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Kammer (1) durch eine Scheibe (9) aus Quarzglas vom Härtungsraum (28) getrennt ist.2. Device according to claim 1, characterized in that the chamber (1) is separated from the hardening space (28) by a disk (9) made of quartz glass. 3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Kammer (1) durch eine strahlungsselektive Filterscheibe (9) vom Härtungsraum (28) getrennt ist.3. Apparatus according to claim 1, characterized in that the chamber (1) is separated from the curing chamber (28) by a radiation-selective filter disc (9).
EP85104814A 1984-05-04 1985-04-20 Device for hardening flat materials from compounds, and compositions hardenable by U.V. radiation Withdrawn EP0161540A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3416502 1984-05-04
DE19843416502 DE3416502A1 (en) 1984-05-04 1984-05-04 DEVICE FOR CURING FLAT-MATERIAL MATERIALS FROM CONNECTIONS OR PREPARATIONS THAT ARE CURABLE BY UV RADIATION

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JP (1) JPS60235793A (en)
DE (1) DE3416502A1 (en)

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WO1990008591A1 (en) * 1989-02-06 1990-08-09 Fluid Dynamics (Sales) Ltd A curing apparatus
WO1993002329A1 (en) * 1991-07-25 1993-02-04 G.E.W. (Ec) Ltd. Uv dryers
WO1996034700A1 (en) * 1995-05-04 1996-11-07 Nölle Gmbh Method and device for hardening a layer on a substrate
EP0834351A1 (en) * 1996-10-04 1998-04-08 Acco-Rexel Group Services Plc Process and apparatus for coating elongate objects
DE19828266C1 (en) * 1998-06-25 2000-03-30 Michael Bisges Ultra-violet light drying system for paint, lacquer, adhesives and printing ink has air flow pattern preventing particle deposition on mirror reflectors
DE19933960C1 (en) * 1999-07-20 2001-02-01 Sturm Maschb Gmbh Coating hardening oven using ultraviolet radiation has cooling medium flow used for simultaneously cooling workpiece and ultraviolet radiation source
WO2003101627A1 (en) * 2002-05-31 2003-12-11 L'air Liquide, Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude Process and apparatus for uv curing of coating materials with inertization
WO2008055556A1 (en) * 2006-11-08 2008-05-15 Linde Ag Method and apparatus for radiation curing
CN100595062C (en) * 2008-08-01 2010-03-24 刘洪生 A drying oven for an ultraviolet printing machine
CN102285213A (en) * 2011-05-05 2011-12-21 刘洪生 UV Drying Lamp Shade
EP2058614A3 (en) * 2007-11-09 2014-04-02 Sturm Maschinen- & Anlagenbau GmbH Device to irradiate elements with UV/light and method of its operation
EP2786807A1 (en) 2013-04-05 2014-10-08 IOT - Innovative Oberflächentechnologie GmbH Device for innertion with UV irradiation in open throughput systems
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WO1990008591A1 (en) * 1989-02-06 1990-08-09 Fluid Dynamics (Sales) Ltd A curing apparatus
WO1993002329A1 (en) * 1991-07-25 1993-02-04 G.E.W. (Ec) Ltd. Uv dryers
WO1996034700A1 (en) * 1995-05-04 1996-11-07 Nölle Gmbh Method and device for hardening a layer on a substrate
US6185840B1 (en) * 1995-05-04 2001-02-13 Noelle Gmbh Method and apparatus for hardening a layer on a substrate
EP0834351A1 (en) * 1996-10-04 1998-04-08 Acco-Rexel Group Services Plc Process and apparatus for coating elongate objects
US6077568A (en) * 1996-10-04 2000-06-20 Acco-Rexel Group Services Plc. Method of coating elongate objects
DE19828266C1 (en) * 1998-06-25 2000-03-30 Michael Bisges Ultra-violet light drying system for paint, lacquer, adhesives and printing ink has air flow pattern preventing particle deposition on mirror reflectors
DE19933960C1 (en) * 1999-07-20 2001-02-01 Sturm Maschb Gmbh Coating hardening oven using ultraviolet radiation has cooling medium flow used for simultaneously cooling workpiece and ultraviolet radiation source
WO2003101627A1 (en) * 2002-05-31 2003-12-11 L'air Liquide, Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude Process and apparatus for uv curing of coating materials with inertization
WO2008055556A1 (en) * 2006-11-08 2008-05-15 Linde Ag Method and apparatus for radiation curing
EP1927406A1 (en) * 2006-11-08 2008-06-04 Linde AG Method and device for radiation hardening
EP2058614A3 (en) * 2007-11-09 2014-04-02 Sturm Maschinen- & Anlagenbau GmbH Device to irradiate elements with UV/light and method of its operation
CN100595062C (en) * 2008-08-01 2010-03-24 刘洪生 A drying oven for an ultraviolet printing machine
CN102285213A (en) * 2011-05-05 2011-12-21 刘洪生 UV Drying Lamp Shade
EP2786807A1 (en) 2013-04-05 2014-10-08 IOT - Innovative Oberflächentechnologie GmbH Device for innertion with UV irradiation in open throughput systems
EP4134172A1 (en) * 2021-08-10 2023-02-15 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Ultraviolet curing apparatus and ultraviolet curing method

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JPS60235793A (en) 1985-11-22

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