EP2077965B1 - Dampfdiffusionsvorrichtung und ausrüstung zur anbringung von etiketten auf behältern mithilfe besagter vorrichtung - Google Patents

Dampfdiffusionsvorrichtung und ausrüstung zur anbringung von etiketten auf behältern mithilfe besagter vorrichtung Download PDF

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Publication number
EP2077965B1
EP2077965B1 EP07825567A EP07825567A EP2077965B1 EP 2077965 B1 EP2077965 B1 EP 2077965B1 EP 07825567 A EP07825567 A EP 07825567A EP 07825567 A EP07825567 A EP 07825567A EP 2077965 B1 EP2077965 B1 EP 2077965B1
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EP
European Patent Office
Prior art keywords
shaped casing
hollow body
pass
vapour
containers
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EP07825567A
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English (en)
French (fr)
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EP2077965A1 (de
Inventor
Silverio Tagliaferro
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.)
Clever Srl-Unipersonale
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Clever Srl-Unipersonale
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Publication of EP2077965A1 publication Critical patent/EP2077965A1/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B53/00—Shrinking wrappers, containers, or container covers during or after packaging
    • B65B53/02—Shrinking wrappers, containers, or container covers during or after packaging by heat
    • B65B53/06—Shrinking wrappers, containers, or container covers during or after packaging by heat supplied by gases, e.g. hot-air jets
    • B65B53/063—Tunnels

Definitions

  • the present invention relates to a vapour diffusion device according to the preamble of claim 1 and known from US 2,880,522 , suitable for being used especially for the application of labels on containers.
  • the present invention also relates to equipment for the application of labels on containers using the above device, also known in the field as lance.
  • the above device and equipment allow labels to be applied on the outer wall of various kinds of containers, exploiting the thermoshrinkability of the material of which they are made.
  • this material shrinks, favoring a perfect and correct adhesion to the containers.
  • containers such as glasses, basins, bowls and the like, made for example of plastic or glass, are generally subjected to a labelling process before being sold or filled with the product to be consumed.
  • Variously shaped labels are formed immediately before being applied to the container or, alternatively, they are conveyed already preformed, preferably in tubular form, close to the same container.
  • One of the techniques for applying labels to containers of the known type envisages advancing the containers aligned with each other on a horizontally moveable conveyor belt.
  • the conveyor belt is situated above a supporting structure belonging to more complex equipment.
  • the labels formed on a tubular structure associated with the conveyor belt and having a diameter larger than the maximum encumbrance of the container, are moved in a vertical direction by driving gears to be positioned in line with the relative containers, positioned externally.
  • the labels are applied to the containers by means of a process known in the field as "thermoshrinking", inside a tunnel located on a transporting conveyor belt, through which the containers pass in succession.
  • This process consists in insufflating or distributing vapour in the tunnel at a certain temperature, depending on the type of plastic material of which the label is made, causing the perfect adhesion of this to the outer surface of the container.
  • the vapour is diffused by a pair of devices, associated with the supporting structure, forming the above tunnel as they are opposite and facing one each other and at a distance from the conveyor belt.
  • Each device comprises a shaped casing which, on the side wall, has a plurality of pass-through openings through which the vapour exits.
  • the device also comprises a supply duct and a discharge duct, connected to the shaped casing, the first suitable for introducing the vapour into the shaped casing, the second suitable for sending the condensate which is produced therein outside the casing.
  • the vapour before being directed against the containers passing through the tunnel on the conveyor belt, is heated by the diffusion device.
  • the purpose of this is to reduce the degree of humidity of the vapour entering the thermoshrinking tunnel and consequently to limit the formation of condensate or drops on the outer surface of the container, capable of causing degradation phenomena of the same, such as the creation of surface mildew.
  • the heating of the vapour is effected by heating means, situated in each of the vapour diffusion devices to raise the temperature.
  • the heating means consist, for example, of a tube through which hot air passes, communicating with the interior of the shaped casing, or a cylindrical resistance, contained in a hollow body interposed between the shaped casing and the same resistance and having a plurality of pass-through holes on the side surface.
  • a first disadvantage derives from the fact that the heating means installed in the known vapour diffusion devices do not ensure the complete elimination or reduction to minimum levels of the depositing of condensate or water drops on the containers.
  • this phenomenon causes the formation of mildew on the containers capable of deteriorating not only the specific container involved but also those with which it comes into contact.
  • a second drawback, which is a direct consequence of the previous aspect, of the known devices in question is due to the fact that, in order to avoid or at least limit the negative phenomena mentioned above, it is necessary to have adequate drying systems of the containers downstream of the thermoshrinking tunnel.
  • Another disadvantage of the known art consists in the construction complexity of the vapour diffusion devices, regardless of the necessity of installing drying systems, as they in any case envisage a discharge duct of the condensate produced in the shaped casing.
  • the present invention proposes to solve the drawbacks of the known art indicated above.
  • a primary objective of the invention is to provide a vapour diffusion device used in thermoshrinking processes for labelling containers which prevents or reduces to the minimum the deposit of water drops or condensate on the same containers.
  • the present invention therefore undertakes to provide a vapour diffusion device which prevents the danger of the formation of harmful phenomena, such as for example mildew, on the containers which damage them.
  • the invention also undertakes to prevent the containers already labelled, when stacked, from adhering to each other, thus favouring their easy separation, without high risks, which can also be irremediable, of breakage.
  • a further undertaking of the invention is to increase the stability of the stack of containers, with respect to the known art, in the phases immediately following its formation.
  • a second objective of the present invention is to provide a vapour diffusion device, in addition to equipment for the application of labels on containers, which has a simpler construction with respect to the equivalent known devices.
  • a further objective of the invention is to provide a vapour diffusion device which contributes to obtaining an effective application of labels to containers.
  • An object of the present invention also relates to equipment for the application of labels on containers according to claim 18 enclosed, to which reference should be made for the sake of convenience.
  • the vapour diffusion device of the invention advantageously significantly reduces the phenomenon of the deposit of water drops on the containers to which thermoshrinkable labels are applied, with respect to the equivalent known art.
  • the invention consequently eliminates or significantly reduces the risk of the appearance of harmful phenomena on the containers, with respect to the known art, such as for example the formation of mildew, capable of also irreparably modifying the functionality.
  • the device of the invention consequently improves the drying degree of the containers after labelling by means of thermoshrinking.
  • vapour diffusion device and equipment for applying labels on containers of the invention have a simpler construction with respect to the known art.
  • the device of the invention does not comprise the discharge duct of the condensate, typical, on the contrary, of the known devices.
  • the equipment for applying labels on containers of the invention reaches the same qualitative results as the known art without, however, having to install drying systems downstream of the vapour diffusion device.
  • the invention also advantageously allows labels to be effectively applied to containers by means of the thermoshrinking process.
  • vapour diffusion device of the invention is advantageously more economical with respect to similar known devices, the other factors involved being identical.
  • the vapour diffusion device according to the invention is represented in figure 1 , where it is indicated as a whole with 1.
  • the device 1 comprises a shaped casing 2, which, on the side wall 2a, has a plurality of first pass-through openings 3, clearly visible in figure 1a , through which heated vapour is discharged.
  • the device 1 comprises a supply duct 4, associated with the shaped casing 2, which introduces the vapour to be heated into the shaped casing 2.
  • the device 1 also comprises heating means, indicated as a whole with 5, situated inside the shaped casing 2, suitable for increasing the temperature of the vapour.
  • the supply duct 4 is equipped with an outlet mouth 4a which communicates with the heating means 5 to put the vapour directly in contact with the heating means 5.
  • the device 1 preferably comprises in this case a hollow body 6, interposed between the shaped casing 2 and the heating means 5 and having, on the side surface 6a, a plurality of second pass-through openings 7, more clearly visible in figure 2 and in the enlargement of figure 2a .
  • the shaped casing 2 and the hollow body 6 are prevalently developed along a longitudinal axis Z.
  • the shaped casing 2 and the hollow body 6 have a U-shaped profile in the longitudinal section and a square-shaped profile in the transversal section.
  • Both the shaped casing 2 and the hollow body 6 are in fact equipped at one end 2b, 6b, with a bottom wall 2d, 6d and at the opposite end 2c, 6c, with an inlet mouth, not indicated, in correspondence with which the heating means 5 are inserted in the hollow body 6.
  • the device 1 also includes a closing flange 8 coupled in correspondence with the outlet mouth with the shaped casing 2 and the hollow body 6 by first fixing means, indicated as a whole with 9 and screws, for example.
  • the shaped casing 2 and the hollow body 6 define an internal chamber 10 which communicates with the outside of the shaped casing 2 by means of the first pass-through openings 3 and with the internal volume of the hollow body 6 by means of the second pass-through openings 7.
  • the first pass-through openings 3 and the second pass-through openings 7 are substantially distributed for the whole length of the shaped casing 2 and hollow body 6 respectively.
  • first pass-through openings 3 and the second pass-through openings 7 are aligned with each other along respective longitudinal directions parallel to each other and to said longitudinal axis Z.
  • Figure 2 shows that the second pass-through openings 7 of the hollow body 6 face a first section 21a of the side wall 2a of the shaped casing 2 which is opposite to a second section 22a of said side wall 2a in which the first pass-through openings 3 are made.
  • this constructive expedient compels the vapour to follow a rather articulated course and remain in the hollow body 6 and subsequently in the shaped casing 2 for a prolonged period of time or in any case sufficiently long to allow the heating means 5 to raise the temperature of the vapour to high values.
  • the supply duct 4 is inserted in a first pass-through hole, not indicated, and made in the shaped casing 2, and in a second pass-through hole, not indicated, coaxial to the first hole and made in the hollow body 6.
  • the supply duct 4 has an end section 4b contained in the internal chamber 10 whereas its outlet mouth 4a is coupled with the above second pass-through hole 7 made in the hollow body 6.
  • the heating means 5 comprise a pair of heat resistances 11, 12 of the immersion type, as shown in figure 3 .
  • the number of heat resistances can be different, and can have any value.
  • each of the heat resistances 11, 12 consists of a metallic bar passing through an axial hole, not visible, made in the closing flange 8.
  • the metallic bar has a substantially U-shaped profile according to a longitudinal sectional plane.
  • Each heat resistance 10, 11 is made up of a main portion 110, contained in the hollow body 6, and a smaller portion 111, protruding from the hollow body 6 and shaped casing 2 and connected to a supporting block 12 suitable for being electrically connected to the electric power supply.
  • the device 1 preferably but not exclusively comprises a plurality of diffusive nozzles 13, each of which is applied outside the shaped casing 2 tin correspondence with one of the first pass-through openings 3.
  • the diffusive nozzles 13 are coupled with a supporting plate 14, connected to the shaped casing 2 by second fixing means, indicated as a whole with 15 and again consisting of screws for example, as shown in figure 3a .
  • the diffusive nozzles 13 can be preferably regulated in height with respect to the shaped casing 2, to obtain different outlet directions of the vapour from the casing 2 itself.
  • the diffusion device 1 of the invention thus allows the shape of the container, often variously articulated, to be followed, favouring the effective application of the labels even in those areas of the container which are most difficult to reach.
  • the vapour diffusion device 1 also comprises connection means, indicated as a whole with 16, associated with the shaped casing 2 and suitable for the connection of the latter with a generic supporting structure.
  • connection means 16 comprises two shaped rods 17, 18 which are coupled by joining means of the known type to the supporting structure.
  • the invention also relates to equipment for the application of labels to containers, not illustrated for the sake of convenience.
  • Said equipment comprises a supporting structure, on which stands a conveyor belt which collects the containers and moves them forward along a pre-established direction.
  • the equipment for the application of labels to containers comprises a pair of vapour diffusion devices 1, connected to the supporting structure and facing the conveyor belt to define a tunnel for the thermoshrinking of the labels on the side wall of the containers.
  • Each container normally consists of a glass, a bowl, a basin or a bottle, made of glass or plastic, not yet filled with the substance of interest.
  • the labels to be applied to the containers are made of plastic or thermoshrinkable synthetic material, such as film made of polyethylene, polystyrene, polyvinylchloride or polyethylene foams, or laminated film with the outer surface which can be used for the printing of decorative designs.
  • each label depends on the type of thermoplastic material used.
  • the tunnel extends for a length which is sufficient for allowing an effective and controlled thermoshrinking process, coinciding with that of the shaped casing 2.
  • the vapour is introduced, for example at a temperature of about 120°C, into the hollow body 6 through the supply duct 4, entering directly into contact with the heating means 5.
  • the vapour is brought to a particularly high temperature and in any case higher than that reached in the devices of the known type, which do not envisage the direct contact of the vapour with the heating means.
  • This aspect which favours the overheating of the vapour, is determined in particular by the type of heating means 5 used by the device 1, consisting, as already mentioned, of suitable heat resistances of the immersion type, suitable for operating in the presence of more or less humid environments.
  • the vapour overheated by the heating means 5 leaves the hollow body 6 and, passing through the second pass-through openings 7, enters the internal chamber 10.
  • the overheated vapour passes through the first openings 3 and the diffusive nozzles 13, thus leaving the shaped casing 2.
  • the vapour immediately enters the tunnel formed on the conveyor belt of the equipment for the application of labels on containers.
  • the vapour is used for the thermoshrinking of the labels on the outer wall of the containers.
  • the labels are formed in a tubular form on a rotating tower and are obtained from a roll positioned on a feeding drum of the tower.
  • the labels are cut to size, for a length substantially equal to that of the container, by means of a knife which acts tangentially with respect to the drum.
  • the label is then transported in a vertical and axial direction towards the container.
  • this derives from the arrangement of a supply duct directly in contact with the heating means, the type of heating means used and the course that the vapour is forced to follow inside the diffusion device according to the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Labeling Devices (AREA)
  • Bag Frames (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)

Claims (18)

  1. Dampfdiffusionsvorrichtung (1), umfassend:
    - ein geformtes Gehäuse (2), das, an der Seitenwand (2a), eine Vielzahl erster Durchgangsöffnungen (3) aufweist, durch die der erwärmte Dampf ausgegeben wird;
    - ein Zuführrohr (4), assoziiert mit dem geformten Gehäuse (2), zum Befördern des zu erwärmenden Dampfs zu dem geformten Gehäuse (2); dadurch gekennzeichnet, dass sie ferner Folgendes umfasst:
    - Erwärmungsmittel (5), angeordnet innenseitig dem geformten Gehäuse (2), geeignet zum Erhöhen der Temperatur des Dampfes, und dadurch, dass das Zuführrohr (4) ausgestattet ist mit einer Auslassmündung (4a), die mit den Erwärmungsmitteln (5) kommuniziert, um den Dampf direkt in Kontakt mit den Erwärmungsmitteln (5) zu bringen.
  2. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, dass sie einen Hohlkörper (6) umfasst, angeordnet zwischen dem geformten Gehäuse (2) und den Erwärmungsmitteln (5), aufweisend, an der Seitenfläche (6a), eine Vielzahl zweiter Durchgangsöffnungen (7).
  3. Vorrichtung gemäß Anspruch 2, dadurch gekennzeichnet, dass das geformte Gehäuse (2) und der Hohlkörper (6) eine Innenkammer definieren, die mit der Außenseite des geformten Gehäuses (2) kommuniziert mittels der ersten Durchgangsöffnungen (3) und mit dem Innenvolumen des Hohlkörpers (6) mittels der zweiten Durchgangsöffnungen (7).
  4. Vorrichtung gemäß Anspruch 2, dadurch gekennzeichnet, dass das geformte Gehäuse (2) und der Hohlkörper (6) im Wesentlichen ausgebildet sind entlang einer Längsachse (Z).
  5. Vorrichtung gemäß Anspruch 2, dadurch gekennzeichnet, dass das geformte Gehäuse (2) und der Hohlkörper (6) ausgestattet sind an einem Ende (2b, 6b) mit einer Bodenwand (2d, 6d) und an dem gegenüberstehenden Ende mit einer Einlassmündung in Korrespondenz mit was die Erwärmungssmittel (5) in den Hohlkörper (6) eingefügt ist.
  6. Vorrichtung gemäß Anspruch 5, dadurch gekennzeichnet, dass sie einen Schließflansch (8) umfasst, gekoppelt durch erste Befestigungsmittel (9) mit dem geformten Gehäuse (2) und an den Hohlkörper (6) in Korrespondenz mit der Einlassmündung.
  7. Vorrichtung gemäß Anspruch 6, dadurch gekennzeichnet, dass die Erwärmungsmittel (5) zumindest einen Wärmewiderstand (10, 11) der Eintauchausführung aufweisen, umfassend eine Metallstange, tretend durch zumindest ein Axialloch, angeordnet in dem Schließflansch (8).
  8. Vorrichtung gemäß Anspruch 7, dadurch gekennzeichnet, dass der Wärmewiderstand (10, 11) einen Hauptabschnitt (110) umfasst, enthalten in dem Hohlkörper (6), und einen kleineren Abschnitt (111), vorragend von dem Hohlkörper (6) und dem geformten Gehäuse (2), verbunden mit einem Stützblock (12), geeignet zur elektrischen Verbindung mit der Elektroenergiezufuhr.
  9. Vorrichtung gemäß Anspruch 7, dadurch gekennzeichnet, dass die Metallstange ein im Wesentlichen U-förmiges Profil entsprechend einer Längsschnittebene aufweist.
  10. Vorrichtung gemäß Anspruch 5, dadurch gekennzeichnet, dass das geformte Gehäuse (2) und der Hohlkörper (6) jeweils ein U-förmiges Profil in einem Längsschnitt und ein quadratisches Profil in einem Transversalschnitt aufweisen.
  11. Vorrichtung gemäß Anspruch 3, dadurch gekennzeichnet, dass das Zuführrohr (4) eingefügt ist in ein erstes Durchgangsloch, angeordnet in dem geformten Gehäuse (2), und in ein zweites Durchgangsloch, koaxial zu dem ersten Loch und angeordnet in dem Hohlkörper (6), und aufweisend eine Endsektion (4b), enthalten in der Innenkammer (10), und die Auslassmündung (4a), gekoppelt mit dem zweiten Durchgangsloch.
  12. Vorrichtung gemäß Anspruch 2, dadurch gekennzeichnet, dass die zweiten Durchgangsöffnungen (7) des Hohlkörpers (6) einer ersten Sektion (21a) der Seitenwand (2a) des geformten Gehäuses (2) gegenüber einer zweiten Sektion (22a) der Seitenwand (2a), wo die ersten Durchgangsöffnungen (3) vorliegend sind, zugewandt sind.
  13. Vorrichtung gemäß Anspruch 2, dadurch gekennzeichnet, dass die ersten Durchgangsöffnungen (3) und die zweiten Durchgangsöffnungen (7) im Wesentlichen verteilt sind bezüglich der gesamten Länge des geformten Gehäuses (2) des Hohlkörpers (6).
  14. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, dass sie eine Vielzahl von Diffusionsdüsen (13) umfasst, jede davon angewandt außenseitig dem geformten Gehäuse (2) in Korrespondenz mit einem der ersten Durchgangslöcher (3).
  15. Vorrichtung gemäß Anspruch 14, dadurch gekennzeichnet, dass die Diffusionsdüsen (13) gekoppelt sind mit einer Stützplatte (14), verbunden durch zweite Befestigungsmittel (15) an dem geformten Gehäuse (2).
  16. Vorrichtung gemäß Anspruch 14, dadurch gekennzeichnet, dass die Diffusionsdüsen (13) höhenreguliert werden können in Bezug auf das geformte Gehäuse (2).
  17. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, dass sie Verbindungsmittel (16) umfassen, assoziiert mit dem geformten Gehäuse (2), geeignet zur Ermöglichung der Verbindung des geformten Gehäuses (2) mit einer Stützstruktur.
  18. Gerät zur Applikation von Etiketten an Containern, umfassend eine Stützstruktur, an der ein Beförderungsband steht, geeignet zum Sammeln der Container und Bewegen von diesen nach vorn entlang einer vorerzeugten Richtung, und zumindest eine Dampfdiffusionsvorrichtung (1) gemäß Anspruch 1, assoziiert mit der Stützstruktur und zugewandt dem Beförderungsband, um einen Tunnel für das Thermoschrumpfen der Etiketten an der Seitenwand der Container zu definieren, und der ausgegebene erwärmte Dampf zu dem Tunnel gesandt wird.
EP07825567A 2006-10-31 2007-10-26 Dampfdiffusionsvorrichtung und ausrüstung zur anbringung von etiketten auf behältern mithilfe besagter vorrichtung Active EP2077965B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000321A ITVI20060321A1 (it) 2006-10-31 2006-10-31 Dispositivo per la diffusione del vapore ed apparecchiatura per l'applicazione di etichette su contenitori utilizzante tale dispositivo
PCT/IB2007/003316 WO2008053335A1 (en) 2006-10-31 2007-10-26 Vapour diffusion device and equipment for the application of labels on containers using said device

Publications (2)

Publication Number Publication Date
EP2077965A1 EP2077965A1 (de) 2009-07-15
EP2077965B1 true EP2077965B1 (de) 2010-07-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07825567A Active EP2077965B1 (de) 2006-10-31 2007-10-26 Dampfdiffusionsvorrichtung und ausrüstung zur anbringung von etiketten auf behältern mithilfe besagter vorrichtung

Country Status (5)

Country Link
EP (1) EP2077965B1 (de)
AT (1) ATE473924T1 (de)
DE (1) DE602007007798D1 (de)
IT (1) ITVI20060321A1 (de)
WO (1) WO2008053335A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1393596B1 (it) * 2009-04-10 2012-04-27 Clever Srl Unipersonale Tunnel perfezionato per il fissaggio stabile di etichette a contenitori

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2880522A (en) * 1956-11-07 1959-04-07 Wilbur G Rollins Steam box
US3312811A (en) * 1964-02-04 1967-04-04 Shanklin Frank Garrett Shrink tunnel
US3678244A (en) * 1971-06-18 1972-07-18 Paul W Worline Film shrinking tunnel utilizing hot air and water as heat transfer medium
DE3318993A1 (de) * 1983-05-25 1984-11-29 Multivac Sepp Haggenmüller KG, 8941 Wolfertschwenden Verfahren und vorrichtung zum herstellen einer packung
DK162038C (da) * 1989-03-17 1992-02-10 Ole Bressendorf Fremgangsmaade samt apparat til krympning af indpakningsfolier

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EP2077965A1 (de) 2009-07-15
DE602007007798D1 (de) 2010-08-26
WO2008053335A1 (en) 2008-05-08
ITVI20060321A1 (it) 2008-05-01
ATE473924T1 (de) 2010-07-15

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