EP0567434A1 - Casing forming dieelectric for electrodes of corona pre-treatment installations - Google Patents

Casing forming dieelectric for electrodes of corona pre-treatment installations Download PDF

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Publication number
EP0567434A1
EP0567434A1 EP93810286A EP93810286A EP0567434A1 EP 0567434 A1 EP0567434 A1 EP 0567434A1 EP 93810286 A EP93810286 A EP 93810286A EP 93810286 A EP93810286 A EP 93810286A EP 0567434 A1 EP0567434 A1 EP 0567434A1
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EP
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Prior art keywords
electrodes
electrode
casing
electrode holder
roller
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Granted
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EP93810286A
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German (de)
French (fr)
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EP0567434B1 (en
Inventor
Jurmin Von Leeuwen
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Sutter Apparatebau AG
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Sutter Apparatebau AG
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T19/00—Devices providing for corona discharge
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S422/00—Chemical apparatus and process disinfecting, deodorizing, preserving, or sterilizing
    • Y10S422/907—Corona or glow discharge means

Definitions

  • the present invention relates to a dielectric-forming jacket for electrodes of corona pretreatment systems, which comprises a mass roller and electrodes with electrode holders which hold the electrodes at a certain distance from the mass roller.
  • corona pretreatment systems which change the molecular surface structure.
  • Such systems consist of various components, namely a high-frequency generator, a high-voltage transformer, a ground roller over which the film to be treated, respectively. Labels are guided and several electrodes distributed around the circumference of the mass roller.
  • the coated electrodes were relatively expensive and accordingly the user often put too few bearings in stock. If the replacement electrodes were missing, the work was usually interrupted for several days.
  • the present invention achieves this object by means of a casing which comprises the features of patent claim 1.
  • the mass roller 1 with the axis 2 passing through it can be seen in FIGS. 1-3.
  • At least one electrode 3 is arranged at a distance above the mass roller 1 and parallel to the axis thereof. Only one such electrode is shown for the sake of simplicity, but four to six electrodes are customary, depending on the size of the corona pretreatment system.
  • Each electrode is attached to an electrode holder.
  • the supply 8 takes place via the electrode holder.
  • the connection between the electrode 3 and the electrode holder 4 takes place in various embodiments by means of corresponding fastening screws 5. These pass through the electrode holder 4 and engage in corresponding threaded blind holes in the electrode 3.
  • the electrode 3 is a rod held on one side.
  • the casing 6 consists of a ceramic tube. This has a recess 7 on one side brought longitudinal slot 17 on.
  • the ceramic tube 6 serving as a dielectric overlaps the electrode 3 on both sides.
  • the floor plan according to FIG. 3 clearly shows that the sheathing 6 or the electrode holder 4 in the region of the recess 7. of the one-sided slot 17, surrounds.
  • Such a ceramic tube as a sheath 6 has a considerably longer service life than the conventional silicone hoses.
  • This solution also makes it possible to work with electrodes 3 of different lengths. In particular, considerably shorter electrodes can be used, depending on the width of the plastic film to be pretreated.
  • FIGS. 4 and 5 A second variant is shown in FIGS. 4 and 5.
  • the electrode 3 is again approximately rod-shaped, it is integrally connected to the electrode holder 4, which has the shape of a welded-on carrier plate.
  • the casing, which forms the dielectric, again has the shape of a tube, but here the recess 7 is designed as a continuous slot 27.
  • Such an embodiment is particularly inexpensive to manufacture, since it has to be manufactured endlessly and only adapted to the electrodes 3 and cut to length.
  • the casing is again formed by a ceramic tube, but the recesses are formed by longitudinal slots 37, which are provided on both sides and are aligned with one another.
  • the electrode holder 4 must be removed on one side before the casing can be pushed on.
  • the electrode holder 4 must then be inserted again into one of the two longitudinal slots 37 and the fastening screw 5 must be tightened again.
  • FIGS. 8 and 9 A last embodiment variant is shown in FIGS. 8 and 9. These exemplary embodiments are by no means to be considered complete or even conclusive.
  • the last embodiment shown is again based on a rod-shaped electrode 3, but its attachment to the electrode holders 4 is not carried out by means of fastening screws in the axial direction, but the holders themselves are designed as rotatable pins and have a threaded bolt 14 at the end, which ends in the corresponding radially extending direction Blind holes are screwable.
  • the casing 6 is again designed as a ceramic tube, which has recesses in the form of radial bores 47 for the passage of the electrode holders 4. The diameter of the radial bores 47 is slightly larger than the diameter of the electrode holders 4 designed as rotatable pins.
  • sheaths 6 are each shown as cylindrical tubes, cross-sectional shapes deviating therefrom can also be used in certain applications.
  • the actual electrodes 3 are not subject to any detectable wear during corona pretreatment, they never have to be replaced even if they are not mechanically damaged. As a result, they remain in the printing shop at all times.
  • the sheaths 6 are extremely easy to replace and can therefore be replaced by specialists in the printing plant themselves. It is a positive side effect that the used ceramic tubes do not pose any problem in terms of disposal.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Elimination Of Static Electricity (AREA)

Abstract

It is proposed to cover the electrodes (3) of corona pre-treatment installations with a casing (6) in the form of ceramic tubes which form a dielectric. The casing respectively has cutouts (7, 17) through which the electrode holder (4) can be guided to the electrode (3) through the casing (6). The casing (6) protrudes beyond the electrode (3) on both sides by an arbitrary distance. This renders it possible to use electrodes (3) which are shorter than the underlying composition roller (1). This brings the advantage that, on the one hand, the treatment width can be exactly matched to the corresponding printing width and, in addition, that it is no longer necessary for the encased electrodes (3) to protrude beyond the composition roller (1) itself, as a result of which it is possible to achieve a greater width of the composition roller (1) despite the difficult space conditions on the printing machine by comparison with the known corona pre-treatment installations. The shape of the cutouts (7, 17) and the configuration of the electrode holders (4) can now be fashioned in a manifold way. <IMAGE>

Description

Die vorliegende Erfindung betrifft ein das Dielektrikum bildende Ummantelung für Elektroden von Coronavorbehandlungsanlagen, die eine Massewalze und Elektroden mit Elektrodenhalterungen umfasst, welche die Elektroden in einem bestimmten Abstand zur Massewalze halten.The present invention relates to a dielectric-forming jacket for electrodes of corona pretreatment systems, which comprises a mass roller and electrodes with electrode holders which hold the electrodes at a certain distance from the mass roller.

Damit sich Kunststoffolien und daraus gefertigte Etiketten haltbar bedrucken lassen, muss die Oberfläche vorbehandelt werden. Dies geschieht mit sogenannten Coronavorbehandlungsanlagen, welche die molekulare Oberflächenstruktur verändern. Solche Anlagen sind in diversen Ausgestaltungsformen bekannt. Sie bestehen aus verschiedenen Bauelementen, nämlich einem Hochfrequenzgenerator, einem Hochspannungstransformator, einer Massewalze über die die zu behandelnde Folie bezw. Etiketten geführt werden und mehreren um den Umfang der Massewalze verteilten Elektroden.The surface must be pretreated so that plastic films and labels made from them can be printed durably. This is done with so-called corona pretreatment systems, which change the molecular surface structure. Such systems are known in various forms. They consist of various components, namely a high-frequency generator, a high-voltage transformer, a ground roller over which the film to be treated, respectively. Labels are guided and several electrodes distributed around the circumference of the mass roller.

Obwohl sich solche Anlagen seit langem bewährt haben, gibt es hiermit doch etwelche Probleme. Ein Problem besteht darin, dass der Einbau bzw. Anbauplatz für den Bauteil der Coronavorbehandlungsanlage, welche die Massewalze und die Elektroden umfasst, äusserst gering ist.Although such systems have proven themselves for a long time, there are still some problems with them. One problem is that the installation or mounting space for the component of the corona pretreatment system, which comprises the mass roller and the electrodes, is extremely small.

Man ist daher bestrebt, einerseits eine möglichst grosse Bearbeitungsbreite zu erhalten, andererseits aber die Gesamt breite des Bauteils möglichst gering zu halten.It is therefore endeavored on the one hand to obtain the largest possible machining width, but on the other hand to keep the overall width of the component as small as possible.

Dies ist bisher nur sehr unbefriedigend gelungen. Begründet ist dies durch die Elektroden und deren, das Dielektrikum bildende, Ummantelung. Ueblicherweise bestanden solche Elektroden bisher aus Metallstäben, die auswechselbar an entsprechenden Halterungen befestigt waren und mit einem Silikonschlauch ummantelt waren. Da bei den Hochfrequenzentladungen zwischen den Elektroden und der Massewalze sich relativ hohe Temperaturen entwickelten, war es erforderlich, die Elektroden kontinuierlich während des Betriebes zu drehen. Dies bedingte selbstverständlich eine relativ aufwendige Mechanik. Trotz dieses Tricks war die Lebensdauer des Dielektrikums, nämlich des Silikonschlauches, sehr begrenzt. Die Elektroden mussten abgeschraubt und ausgewechselt werden, damit sie an den Lieferanten gesandt werden konnten um mit einer neuen isolierenden Ummantelung versehen zu werden.So far, this has only been achieved very unsatisfactorily. This is due to the electrodes and their casing, which forms the dielectric. Typically, such electrodes previously consisted of metal rods that were exchangeably attached to appropriate holders and were covered with a silicone tube. Since relatively high temperatures developed during the high-frequency discharges between the electrodes and the ground roller, it was necessary to continuously rotate the electrodes during operation. Of course, this required a relatively complex mechanism. Despite this trick, the life span of the dielectric, namely the silicone tube, was very limited. The electrodes had to be unscrewed and replaced so that they could be sent to the supplier to be provided with a new insulating jacket.

Die ummantelten Elektroden waren relativ kostspielig und entsprechend legte der Benützer oftmals eine zu geringe Anzahl an Lager. Fehlten dann die Auswechselelektroden, so kam es meist zu Arbeitsunterbrüchen für mehrere Tage.The coated electrodes were relatively expensive and accordingly the user often put too few bearings in stock. If the replacement electrodes were missing, the work was usually interrupted for several days.

Ein weiteres Problem der bekannten ummantelten Elektroden bestand darin, dass der Silikonschlauch selber zu wenig Festigkeit aufwies und entsprechend die Elektroden immer länger als die Ummantelung sein mussten.Another problem with the known covered electrodes was that the silicone tube itself was not strong enough and the electrodes had to be longer than the cover.

Dies bedingte aber zwangsläufig, dass die Elektroden länger als die Massewalze sein mussten und beidseitig über die Massewalze vorstanden, damit keine Kurzschlussdurchlagsspannung zwischen den nichtisolierten Enden der Elektrode und der Massewalze stattfinden konnte. Eine Folge davon war natürlich entweder eine grössere Breite des Bauteiles der Coronavorbehandlungsanlage oder aber eine kürzere Massewalze, was wiederum zur Verminderung der Bearbeitungsbreite führte.However, this inevitably meant that the electrodes had to be longer than the ground roller and protrude from both sides of the ground roller so that no short-circuit breakdown voltage could take place between the non-insulated ends of the electrode and the ground roller. One consequence of this was of course either a larger width of the component of the corona pretreatment system or a shorter mass roller, which in turn led to a reduction in the processing width.

Es ist die Aufgabe der vorliegenden Erfindung, eine die das Dielektrikum bildende Ummantelung für Elektroden von Coronavorbehandlungsanlagen zu schaffen, mit welcher die vorgenannten Probleme gelöst werden können.It is the object of the present invention to provide a jacket for the electrodes of corona pretreatment systems which forms the dielectric and with which the aforementioned problems can be solved.

Diese Aufgabe löst die vorliegende Erfindung durch eine Ummantelung, welche die Merkmale des Patentanspruches 1 umfasst.The present invention achieves this object by means of a casing which comprises the features of patent claim 1.

In der beiliegenden Zeichnung sind verschiedene Ausführungsformen des Erfindungsgegenstandes dargestellt und anhand der nachfolgenden Beschreibung erläutert. Es zeigt:

  • Figur 1 eine ummantelte Elektrode, angeordnet über der Massewalze, in Seitenansicht;
  • Figur 2 dieselbe Anordnung in der Seitenansicht, wobei die Elektrode mit seiner Ummantelung im Schnitt dargestellt ist und
  • Figur 3 dieselbe Elektrode und die dazugehörige Massewalze im Grundriss.
  • Figur 4 - 9 zeigen drei weitere Ausführungsformen von Elektroden mit unterschiedlichen Halterungen und entsprechend angepassten Ummantelungen, jeweils in der Seitenansicht und im Aufriss, teilweise im Schnitt.
Various embodiments of the subject matter of the invention are illustrated in the accompanying drawing and explained with the aid of the following description. It shows:
  • 1 shows a covered electrode, arranged above the mass roller, in side view;
  • Figure 2 shows the same arrangement in side view, the electrode with its casing is shown in section and
  • Figure 3 shows the same electrode and the associated ground roller in the plan.
  • FIGS. 4-9 show three further embodiments of electrodes with different holders and correspondingly adapted sheathings, each in side view and in elevation, partly in section.

In den Figuren 1 - 3 ist die Massewalze 1 mit der sie durchsetzenden Achse 2 erkennbar. Im Abstand über der Massewalze 1 und achsparallel zu dieser ist jeweils mindestens eine Elektrode 3 angeordnet. Der Einfachheit halber ist nur eine solche Elektrode dargestellt, doch üblich sind je nach Grösse der Coronavorbehandlungsanlage vier bis sechs Elektroden. Jede Elektrode ist an einer Elektrodenhalterung angebracht. Ueber die Elektrodenhalterung erfolgt die Speisung 8. Die Verbindung zwischen der Elektrode 3 und der Elektrodenhalterung 4 erfolgt bei verschiedenen Ausführungsformen mittels entsprechenden Befestigungsschrauben 5. Diese durchsetzen die Elektrodenhalterung 4 und greifen in entsprechende achsial in der Elektrode 3 verlaufenden Gewindesacklochbohrungen.The mass roller 1 with the axis 2 passing through it can be seen in FIGS. 1-3. At least one electrode 3 is arranged at a distance above the mass roller 1 and parallel to the axis thereof. Only one such electrode is shown for the sake of simplicity, but four to six electrodes are customary, depending on the size of the corona pretreatment system. Each electrode is attached to an electrode holder. The supply 8 takes place via the electrode holder. The connection between the electrode 3 and the electrode holder 4 takes place in various embodiments by means of corresponding fastening screws 5. These pass through the electrode holder 4 and engage in corresponding threaded blind holes in the electrode 3.

In der Ausführungsform gemäss den Figuren 1 - 3 ist die Elektrode 3 ein einseitig gehaltener Stab. Die Ummantelung 6 besteht aus einem Keramikröhrchen. Dieses weist als Ausnehmung 7 einen einseitig angebrachten Längsschlitz 17 auf. Das als Dielektrikum dienende Keramikröhrchen 6 überlappt beidseitig die Elektrode 3. Im Grundriss gemäss der Figur 3 erkennt man deutlich, dass somit die Ummantelung 6 die Elektrodenhalterung 4, im Bereich der Ausnehmung 7 bezw. des einseitigen Schlitzes 17, umgibt.In the embodiment according to FIGS. 1-3, the electrode 3 is a rod held on one side. The casing 6 consists of a ceramic tube. This has a recess 7 on one side brought longitudinal slot 17 on. The ceramic tube 6 serving as a dielectric overlaps the electrode 3 on both sides. The floor plan according to FIG. 3 clearly shows that the sheathing 6 or the electrode holder 4 in the region of the recess 7. of the one-sided slot 17, surrounds.

Ein solches Keramikröhrchen als Ummantelung 6 weist im Vergleich zu den üblichen Silikonschläuchen eine erheblich längere Lebensdauer auf. Diese Lösung erlaubt es auch, mit Elektroden 3 unterschiedlicher Länge zu arbeiten. Insbesondere können erheblich kürzere Elektroden verwendetwerden, entsprechend der Breite der vorzubehandelnden Kunststoffolie.Such a ceramic tube as a sheath 6 has a considerably longer service life than the conventional silicone hoses. This solution also makes it possible to work with electrodes 3 of different lengths. In particular, considerably shorter electrodes can be used, depending on the width of the plastic film to be pretreated.

In den Figuren 4 und 5 ist eine zweite Variante dargestellt. Die Elektrode 3 ist zwar wiederum etwa stabförmig gestaltet, doch ist sie einstückig mit der Elektrodenhalterung 4 verbunden, welche die Gestalt einer angeschweissten Trägerplatte hat. Die Ummantelung, welche das Dielektrikum bildet, hat wiederum die Form eines Röhrchens, doch wird hier die Ausnehmung 7 als durchgehender Schlitz 27 gestaltet. Eine solche Ausführungsform ist in der Fertigung besonders preiswert, da es endlos gefertigt und nur noch den Elektroden 3 angepasst, abgelängt werden muss.A second variant is shown in FIGS. 4 and 5. Although the electrode 3 is again approximately rod-shaped, it is integrally connected to the electrode holder 4, which has the shape of a welded-on carrier plate. The casing, which forms the dielectric, again has the shape of a tube, but here the recess 7 is designed as a continuous slot 27. Such an embodiment is particularly inexpensive to manufacture, since it has to be manufactured endlessly and only adapted to the electrodes 3 and cut to length.

Während die Lösung gemäss den Figuren 4 und 5 eine freie relative Verschieblichkeit der Ummantelung 6 bezüglich der Elektrode 3 erlaubt, ist dies bei der Lösung gemäss den Figuren 6 und 7 nicht möglich. Auch hier wird die Ummantelung wiederum durch ein Keramikröhrchen gebildet, doch sind die Ausnehmungen durch beidseitig angebrachte Längsschlitze 37, die miteinander fluchten, gestaltet. Zur Auswechslung der Ummantelung 6 muss eine der beiden Befestigungsschrauben 17 gelöst und die Elektrodenhalterung 4 einseitig entfernt werden, bevor sich die Ummantelung aufschieben lässt. Anschliessend muss die Elektrodenhalterung 4 wieder in den einen der beiden Längsschlitze 37 eingeführt und die Befestigungsschraube 5 wieder angezogen werden.While the solution according to FIGS. 4 and 5 allows the casing 6 to move freely relative to the electrode 3, this is not possible with the solution according to FIGS. 6 and 7. Here, too, the casing is again formed by a ceramic tube, but the recesses are formed by longitudinal slots 37, which are provided on both sides and are aligned with one another. To replace the casing 6, one of the two fastening screws 17 must be loosened and the electrode holder 4 must be removed on one side before the casing can be pushed on. The electrode holder 4 must then be inserted again into one of the two longitudinal slots 37 and the fastening screw 5 must be tightened again.

Eine letzte Ausführungsvariante ist in den Figuren 8 und 9 aufgezeigt. Diese Ausführungsbeispiele sind keineswegs vollständig oder gar als abschliessend zu betrachten. Die letztgezeigte Ausführungsform geht wiederum von einer stabförmigen Elektrode 3 aus, doch erfolgt deren Befestigung mit den Elektrodenhalterungen 4 nicht mittels Befestigungsschrauben in achsialer Verlaufsrichtung, sondern die Halterungen selbst sind als drehbare Stifte ausgestaltet, und weisen endseitig einen Gewindebolzen 14 auf, der in die entsprechenden radialverlaufenden Sacklochbohrungen einschraubbar sind. Die Ummantelung 6 ist auch hier wiederum als Keramikröhrchen gestaltet, welches Ausnehmungen in Form von radialen Bohrungen 47 zur Durchführung der Elektrodenhalterungen 4 aufweist. Der Durchmesser der radialen Bohrungen 47 ist geringfügig grösser als die Durchmesser der als drehbare Stifte gestalteten Elektrodenhalterungen 4.A last embodiment variant is shown in FIGS. 8 and 9. These exemplary embodiments are by no means to be considered complete or even conclusive. The last embodiment shown is again based on a rod-shaped electrode 3, but its attachment to the electrode holders 4 is not carried out by means of fastening screws in the axial direction, but the holders themselves are designed as rotatable pins and have a threaded bolt 14 at the end, which ends in the corresponding radially extending direction Blind holes are screwable. The casing 6 is again designed as a ceramic tube, which has recesses in the form of radial bores 47 for the passage of the electrode holders 4. The diameter of the radial bores 47 is slightly larger than the diameter of the electrode holders 4 designed as rotatable pins.

Obwohl die Ummantelungen 6 jeweils als zylindrische Röhrchen dargestellt sind, können in gewissen Anwendungsfällen auch davon abweichende Querschnittsformen Verwendung finden.Although the sheaths 6 are each shown as cylindrical tubes, cross-sectional shapes deviating therefrom can also be used in certain applications.

Da die eigentlichen Elektroden 3 bei der Coronavorbehandlung keiner feststellbaren Abnutzung unterliegen, müssen diese selber, wenn sie nicht mechanisch beschädigt werden, nie ausgewechselt werden. Folglich bleiben diese ständig im Druckereibetrieb. Die Ummantelungen 6 sind äusserst einfach auswechselbar und können folglich vom Fachpersonal im Druckereibetrieb selber ausgewechselt werden. Es ist ein positiver Nebeneffekt, dass die verbrauchten Keramikröhrchen auch kein Problem in der Entsorgung bieten.Since the actual electrodes 3 are not subject to any detectable wear during corona pretreatment, they never have to be replaced even if they are not mechanically damaged. As a result, they remain in the printing shop at all times. The sheaths 6 are extremely easy to replace and can therefore be replaced by specialists in the printing plant themselves. It is a positive side effect that the used ceramic tubes do not pose any problem in terms of disposal.

Claims (5)

1. Eine das Dielektrikum bildende Ummantelung (6) für Elektroden (5) von Coronavorbehandlungsanlagen, die eine Massewalze (1) und Elektroden mit Elektrodenhalterungen (4) umfasst, welche die Elektroden in einem bestimmten Abstand zur Massewalze halten, dadurch gekennzeichnet, dass die Ummantelung (6) aus einer Keramikhülse besteht, welche länger als die zu ummantelnde Elektrode (3) ist, und in dem von der Massewalze (1) abgelegenen Bereich mindestens eine Ausnehmung (17,27,37,47) aufweist, durch welche die Elektrodenhalterung durchgeführt ist.1. A dielectric forming jacket (6) for electrodes (5) of corona pretreatment systems, which comprises a mass roller (1) and electrodes with electrode holders (4) which hold the electrodes at a certain distance from the mass roller, characterized in that the jacket (6) consists of a ceramic sleeve which is longer than the electrode (3) to be encased and which has at least one recess (17,27,37,47) in the area remote from the ground roller (1) through which the electrode holder is passed is. 2. Ummantelung nach Anspruch 1, dadurch gekennzeichnet, dass diese (6) die Gestalt eines Röhrchens hat, welches einen einseitigen Längsschlitz (17) als Ausnehmung für die Durchführung der Elektrodenhalterung (4) aufweist.2. Sheath according to claim 1, characterized in that it (6) has the shape of a tube which has a one-sided longitudinal slot (17) as a recess for the passage of the electrode holder (4). 3. Ummantelung nach Anspruch 2, dadurch gekennzeichnet, dass diese (6) die Gestalt eines Röhrchens hat, welches beidseitig einen Längsschlitz (37) als Ausnehmungen für die Durchführung der Elektrodenhalterung (4) aufweist.3. Sheath according to claim 2, characterized in that it (6) has the shape of a tube which has a longitudinal slot (37) on both sides as recesses for the implementation of the electrode holder (4). 4. Ummantelung nach Anspruch 1, dadurch gekennzeichnet, dass diese (6) die Gestalt eines Röhrchens hat, welches einen über die gesamte Länge sich erstreckenden Schlitz (27) als Ausnehmung zur Durchführung der Elektrodenhalterung (4) aufweist.4. Sheathing according to claim 1, characterized in that this (6) has the shape of a tube which has a slot (27) extending over the entire length as a recess for passage the electrode holder (4). 5. Ummantelung nach Anspruch 1, dadurch gekennzeichnet, dass diese (6) die Gestalt eines Röhrchens hat, welches mehrere auf einer Linie angeordnete, radiale Bohrungen (47) als Ausnehmungen für die Durchführung der Elektrodenhalterung aufweist.5. Sheath according to claim 1, characterized in that it (6) has the shape of a tube which has a plurality of radial bores (47) arranged on a line as recesses for the passage of the electrode holder.
EP93810286A 1992-04-21 1993-04-20 Casing forming dieelectric for electrodes of corona pre-treatment installations Expired - Lifetime EP0567434B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1294/92A CH685004A5 (en) 1992-04-21 1992-04-21 Dielectric-sheathing for electrodes of corona treatment plants.
CH1294/92 1992-04-21

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EP0567434A1 true EP0567434A1 (en) 1993-10-27
EP0567434B1 EP0567434B1 (en) 1996-11-27

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US6773678B2 (en) 2000-03-20 2004-08-10 Endress + Hauser Conducta Gesellschaft Fur Mess Und Regeltechnik Mbh + Co. Mounting system and retractable sensor holder for analytical sensors

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DE3321464A1 (en) * 1983-06-14 1984-12-20 Klaus 4803 Steinhagen Kalwar Apparatus for the surface treatment of film webs by means of electrical corona discharges
DE3935013A1 (en) * 1989-10-20 1991-04-25 Klaus Kalwar Corona discharge system - uses inks or coatings which release no flammable vapours in ozone-free operation

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EP0567434B1 (en) 1996-11-27
DE59304564D1 (en) 1997-01-09
CH685004A5 (en) 1995-02-28
US5466422A (en) 1995-11-14

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