EP2641835A1 - Packaging machine with sealing station for introducing a gas into a package - Google Patents

Packaging machine with sealing station for introducing a gas into a package Download PDF

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Publication number
EP2641835A1
EP2641835A1 EP13001345.1A EP13001345A EP2641835A1 EP 2641835 A1 EP2641835 A1 EP 2641835A1 EP 13001345 A EP13001345 A EP 13001345A EP 2641835 A1 EP2641835 A1 EP 2641835A1
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EP
European Patent Office
Prior art keywords
gassing
evacuation
packaging machine
opening
sealing
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.)
Granted
Application number
EP13001345.1A
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German (de)
French (fr)
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EP2641835B1 (en
Inventor
Dominik Harlacher
Andreas Mader
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.)
Multivac Sepp Haggenmueller GmbH and Co KG
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Multivac Sepp Haggenmueller GmbH and Co KG
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Publication of EP2641835A1 publication Critical patent/EP2641835A1/en
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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
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/04—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied
    • 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
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/02—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas
    • B65B31/025—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas specially adapted for rigid or semi-rigid containers
    • B65B31/028—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas specially adapted for rigid or semi-rigid containers closed by a lid sealed to the upper rim of the container, e.g. tray-like container
    • 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
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/04—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied
    • B65B31/043—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied the nozzles acting horizontally between an upper and a lower part of the container or wrapper, e.g. between container and lid

Definitions

  • the invention relates to a packaging machine with a sealing station with the features of claim 1.
  • Thermoforming packaging machines and tray sealing machines from the Applicant's company are known, which are designed to provide packages by means of vacuum and optionally also by gassing with very low residual oxygen values in order, for example, to ensure a long shelf life for foods.
  • the volume inside the packaging must usually be evacuated to below 10 mbar. Achieving this high vacuum level requires high vacuum pump performance and a long evacuation time. This adversely affects the performance of the packaging machine as the number of packages that can be produced per unit of time decreases.
  • a gassing system can additionally be used.
  • the volume in the interior of the sealing station and the packaging for example, evacuated to, for example, 500 mbar and thus removes a portion of the oxygen from the package.
  • the supply of gas causes a further displacement of the remaining oxygen molecules from the interior of the package and leads to a further reduction of the residual oxygen value.
  • the gas is supplied on one side of the packaging through gassing openings in the sealing tool and discharged on the opposite side via evacuation openings. Part of the gas volume flow flows from the side with the gassing openings in the upper area of the packaging to the side with the evacuation openings. Another part of the gas flow flows into the lower part of the packaging and from there back up.
  • the object of the present invention is to provide a packaging machine which increases the performance of the packaging machine and at the same time improves the efficiency of fumigation and / or evacuation in order to reduce the costs for producing packages with very low residual oxygen values or very high oxygen values of over To reduce 30%.
  • the packaging machine has a sealing station for sealing a packaging, which in turn comprises a trough for receiving a food and a lid film, wherein the sealing station comprises a sealing tool with at least one evacuation opening for discharging the atmosphere and one gassing opening for supplying a gas volume flow.
  • the sealing tool is characterized in that the evacuation opening and the gassing opening are arranged on a common side of the sealing tool. It was extremely astonishing to the person skilled in the art that this arrangement of the gassing and evacuation opening leads to improved residual oxygen values or to a shortening of the processing time and thus increases the performance of the packaging machine.
  • the gas volume flow has a U-shaped flow path both in the upper and in the lower part of the packaging and does not lead to a point of intersection or turbulence.
  • the flow path ensures unhindered and rapid displacement of the oxygen molecules via the evacuation openings from the packaging.
  • a plurality of evacuation openings and a plurality of gassing openings are provided, wherein the total cross section of the evacuation openings differs from the total cross section of the gassing openings by a maximum of 20%, preferably by a maximum of 5%.
  • This provides a large gas flow rate to further increase the fumigation efficiency, which further reduces the processing time, thus maximizing the packaging machine's performance.
  • at least three evacuation openings and three gassing openings are provided in order to allow the gas volume flow to flow in not only selectively but in a wide shape. This leads to an improvement of the distribution of the gas volume flow within the packaging and to an increase in the efficiency. A smaller amount of gas is necessary and the fumigation time for displacing the oxygen molecules can be further shortened.
  • the evacuation opening / s and the gassing opening (s) are preferably arranged such that a U-shaped flow profile of the gas volume flow in the packaging can be generated from the gassing opening to the evacuation opening, which provides improved flow behavior and improved efficiency.
  • the evacuation opening / s and the gassing opening / s are arranged such that a U-shaped flow profile of the gas volume flow can also be generated in the upper and lower regions of the packaging from the gassing opening to the evacuation opening in order to further minimize the residual oxygen content.
  • the evacuation port and the gassing opening are each arranged at an opposite end of the common side in order to improve the flow behavior of the gas volume flow.
  • the gassing opening in the sealing tool is arranged above an edge of the packaging in order to ensure a direct unimpeded flow into the packaging.
  • FIG. 1 shows a perspective view of a first embodiment of a packaging machine 1 according to the invention.
  • a packaging machine 1 is a tray sealing machine ("Traysealer").
  • the packaging machine 1 has a machine frame 2, on which a sealing station 3 is arranged for closing and optionally for evacuating, gasifying and / or sealing supplied, cup-shaped containers and for cutting a cover film used for closing.
  • the sealing station 3 is located under a hood 4 to be opened.
  • the packaging machine 1 further has a feed belt 5 for feeding the packages, a discharge belt 6 for transporting the sealed packages, a film feed roller 7 for picking up and feeding a roll of lid film, a film tensioning device 8 for tensioning the lid film, and a film remover 9 for winding the film after sealing, remaining film residues.
  • a display 10 allows the operator of the packaging machine 1 to check and control the operation of the packaging machine 1. On the display 10 may be provided for this purpose controls 10 a, such as panels or switches to affect the operation of the packaging machine 1. Evacuation settings such as vacuum level or evacuation times, as well as gassing settings such as gas volume and setpoint oxygen residuals, can be stored and managed in recipes for different packages or products in the controller.
  • Fig. 2a shows a sealing tool 11 in the form of a sealing tool lower part 12, which is provided for a package 20.
  • the sealing tool lower part 12 has five gassing openings 14 on the first or left side 13 and four evacuation openings 16 on the opposite or second side 15. This type of arrangement of opposed gassing and evacuation ports is known in the art.
  • a resulting flow profile of the gas volume flow 17 is in Fig. 2b shown schematically.
  • a first part 17 a of the gas volume flow 17 flows in the upper part Area 18 of the package 20, which has a recess 30 for receiving a food, in a largely linear course from a gassing opening 14 to an evacuation opening 16.
  • a second part 17b of the gas flow stream flows down into a lower portion 19 of the package 20. This comes It leads to a reversal of the flow direction and to a crossing point 17 c, as soon as the flow from below back into the upper region 18 and to the evacuation port 16 passes. This causes turbulence and thus flow losses.
  • Fig. 3a shows a sealing tool 21 according to the invention in the form of a sealing tool lower part 22.
  • the gassing openings 24 opposite side 25 no gassing or evacuation openings are provided. Both the gassing openings 24 and the evacuation openings 26 are arranged together only on one side 23.
  • the four in Fig. 3a shown gassing 24 are arranged at the right end of the page 23 and the four evacuation openings 26 at the left end of the side 23 to produce a maximum distance, which is particularly advantageous for a U-shaped course of the gas flow 27.
  • the gassing openings 24 are arranged above the upper shell edge 31 of the packaging 20.
  • Fig. 3b the gas volume flow 27 is shown with the portion 27a in the upper region 18 of the package 20 and with the portion 27b in the lower region 19 of the package 20.
  • This U-shaped flow pattern shows that there are no crossing points or colliding gas flow rates.
  • the number of evacuation openings 24 and the gassing openings 26 does not have to be identical, and it has proven to be advantageous if the total cross section of the gassing openings 24 corresponds approximately to the total cross section of the evacuation openings 26.
  • the orientation of the evacuation openings 26 and the gassing openings 24 is not on the horizontal orientation, as in Fig. 3a shown, limited.
  • the evacuation opening 26 serves as an outlet opening for the gas volume flow or the displaced atmosphere.
  • a first side 23 is one in the context of the invention Half and a second side 25 the opposite half of the circle or the oval.

Abstract

The packaging machine (1) has a sealing station (3) for sealing a package having a trough and a cover film. The sealing station comprises a sealing tool that includes an evacuation aperture for discharging the atmosphere, and a gas flushing aperture for supplying a gas volume flow. The evacuation aperture is arranged on the same side of sealing tool as the gas flushing aperture.

Description

Die Erfindung bezieht sich auf eine Verpackungsmaschine mit einer Siegelstation mit den Merkmalen des Anspruchs 1.The invention relates to a packaging machine with a sealing station with the features of claim 1.

Es sind Tiefziehverpackungsmaschinen und Schalenversiegelungsmaschinen aus dem Hause der Anmelderin bekannt, die dafür ausgelegt sind, Packungen mittels Vakuum und optional auch mittels Begasung mit sehr geringen Restsauerstoffwerten bereitzustellen, um beispielsweise bei Lebensmitteln eine lange Haltbarkeit zu gewähren. Um geringe Restsauerstoffwerte von unter 0.05 % zu erreichen, muss das Volumen im Inneren der Verpackung üblicherweise auf unter 10 mbar evakuiert werden. Um diesen hohen Vakuumwert zu erreichen, sind eine hohe Leistung der Vakuumpumpe und eine lange Evakuierungszeit notwendig. Dies beeinflusst die Leistung der Verpackungsmaschine negativ, da die Anzahl der erzeugbaren Verpackungen pro Zeiteinheit sinkt.Thermoforming packaging machines and tray sealing machines from the Applicant's company are known, which are designed to provide packages by means of vacuum and optionally also by gassing with very low residual oxygen values in order, for example, to ensure a long shelf life for foods. In order to achieve low residual oxygen values of less than 0.05%, the volume inside the packaging must usually be evacuated to below 10 mbar. Achieving this high vacuum level requires high vacuum pump performance and a long evacuation time. This adversely affects the performance of the packaging machine as the number of packages that can be produced per unit of time decreases.

Um die Leistung der Verpackungsmaschine zu steigern, kann zusätzlich ein Begasungssystem eingesetzt werden. Dabei wird das Volumen im Inneren der Siegelstation und der Verpackung beispielsweise auf beispielsweise 500 mbar evakuiert und somit ein Teil des Sauerstoffs aus der Verpackung entfernt. Die Zuführung von Gas bewirkt ein weiteres Verdrängen der verbliebenen Sauerstoffmoleküle aus dem Inneren der Verpackung und führt zu einer weiteren Verringerung des Restsauerstoffwertes. Dabei wird durch Begasungsöffnungen im Siegelwerkzeug das Gas auf einer Seite der Verpackung zugeführt und auf der gegenüberliegenden Seite über Evakuierungsöffnungen abgeführt. Ein Teil des Gasvolumenstroms strömt im oberen Bereich der Verpackung von der Seite mit den Begasungsöffnungen zur Seite mit den Evakuierungsöffnungen. Ein anderer Teil des Gasvolumenstroms strömt in den unteren Teil der Verpackung und von dort wieder nach oben. Dabei kommt es zu einem Kreuzungspunkt dieses Gasvolumenstroms und zu Strömungsverlusten in Folge von Turbulenzen. Dies beeinflusst das Verdrängen der Sauerstoffmoleküle aus der Verpackung negativ. Ein Vorteil an dieser Kombination ist zum Einen trotzdem eine kürzere Bearbeitungszeit gegenüber dem alleinigen Evakuieren und zum Anderen die Möglichkeit Verpackungen bereitzustellen, die nur ein geringes Vakuum aufweisen und somit eine geringere Belastung auf die Verpackung, dabei aber geringe Restsauerstoffwerte aufweisen. Bei Fleisch ist es alternativ auch möglich, die Verpackung mit einem Gasgemisch von Sauerstoff und Kohlendioxid zu begasen, um den Sauerstoffgehalt auf 30 bis 50 % zu bringen. Der hohe Sauerstoffgehalt sorgt hierbei für eine bleibende rote Farbe des Fleisches und der Kohlendioxidgehalt für die Haltbarkeit.In order to increase the performance of the packaging machine, a gassing system can additionally be used. In this case, the volume in the interior of the sealing station and the packaging, for example, evacuated to, for example, 500 mbar and thus removes a portion of the oxygen from the package. The supply of gas causes a further displacement of the remaining oxygen molecules from the interior of the package and leads to a further reduction of the residual oxygen value. In this case, the gas is supplied on one side of the packaging through gassing openings in the sealing tool and discharged on the opposite side via evacuation openings. Part of the gas volume flow flows from the side with the gassing openings in the upper area of the packaging to the side with the evacuation openings. Another part of the gas flow flows into the lower part of the packaging and from there back up. This results in a crossover point of this gas volume flow and flow losses due to turbulence. This negatively affects the displacement of the oxygen molecules from the package. One advantage of this combination is, on the one hand, a shorter processing time compared to the sole evacuation and, on the other hand, the possibility of providing packages which have only a low vacuum and thus a lower load on the packaging, but with low residual oxygen values. In the case of meat, it is alternatively also possible to gas the packaging with a gas mixture of oxygen and carbon dioxide to reduce the oxygen content to bring 30 to 50%. The high oxygen content ensures a lasting red color of the meat and the carbon dioxide content for the durability.

Aufgabe der vorliegenden Erfindung ist es, eine Verpackungsmaschine zur Verfügung zu stellen, die die Leistung der Verpackungsmaschine erhöht und gleichzeitig die Effizienz der Begasung und/oder der Evakuierung verbessert, um die Kosten zur Herstellung von Verpackungen mit sehr geringen Restsauerstoffwerten oder sehr hohen Sauerstoffwerten von über 30 % zu reduzieren.The object of the present invention is to provide a packaging machine which increases the performance of the packaging machine and at the same time improves the efficiency of fumigation and / or evacuation in order to reduce the costs for producing packages with very low residual oxygen values or very high oxygen values of over To reduce 30%.

Diese Aufgabe wird gelöst durch eine Verpackungsmaschine mit einer Siegelstation mit den Merkmalen des Anspruchs 1. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.This object is achieved by a packaging machine with a sealing station having the features of claim 1. Advantageous developments of the invention are specified in the subclaims.

Die erfindungsgemäße Verpackungsmaschine weist eine Siegelstation zum Siegeln einer Verpackung auf, die ihrerseits eine Mulde zur Aufnahme eines Lebensmittels und eine Deckelfolie umfasst, wobei die Siegelstation ein Siegelwerkzeug mit wenigstens je einer Evakuierungsöffnung zum Abführen der Atmosphäre und je einer Begasungsöffnung zum Zuführen eines Gasvolumenstroms umfasst. Das Siegelwerkzeug zeichnet sich dadurch aus, dass die Evakuierungsöffnung und die Begasungsöffnung an einer gemeinsamen Seite des Siegelwerkzeugs angeordnet sind. Für den Fachmann war es überaus erstaunlich festzustellen, dass diese Anordnung der Begasungs- und Evakuierungsöffnung zu verbesserten Restsauerstoffwerten bzw. zu einer Verkürzung der Bearbeitungszeit führt und somit die Leistung der Verpackungsmaschine steigert. Dies begründet sich in der Tatsache, dass der Gasvolumenstrom einen U-förmigen Strömungsverlauf sowohl im oberen wie auch unteren Teil der Verpackung aufweist und es dabei nicht zu einem Kreuzungspunkt bzw. zu Turbulenzen kommt. Der Strömungsverlauf sorgt für ein ungehindertes und schnelles Verdrängen der Sauerstoffmoleküle über die Evakuierungsöffnungen aus der Verpackung.The packaging machine according to the invention has a sealing station for sealing a packaging, which in turn comprises a trough for receiving a food and a lid film, wherein the sealing station comprises a sealing tool with at least one evacuation opening for discharging the atmosphere and one gassing opening for supplying a gas volume flow. The sealing tool is characterized in that the evacuation opening and the gassing opening are arranged on a common side of the sealing tool. It was extremely astonishing to the person skilled in the art that this arrangement of the gassing and evacuation opening leads to improved residual oxygen values or to a shortening of the processing time and thus increases the performance of the packaging machine. This is due to the fact that the gas volume flow has a U-shaped flow path both in the upper and in the lower part of the packaging and does not lead to a point of intersection or turbulence. The flow path ensures unhindered and rapid displacement of the oxygen molecules via the evacuation openings from the packaging.

In einer vorteilhaften Ausgestaltung sind mehrere Evakuierungsöffnungen und mehrere Begasungsöffnungen vorgesehen, wobei sich der Gesamtquerschnitt der Evakuierungsöffnungen von dem Gesamtquerschnitt der Begasungsöffnungen maximal um 20 %, vorzugsweise um maximal 5 % unterscheidet. Dies sorgt für einen großen Gasvolumenstrom, um die Effizienz der Begasung weiter zu steigern, die zu einer weiteren Verkürzung der Bearbeitungszeit führt, und somit die Leistung der Verpackungsmaschine maximiert. Vorzugsweise sind wenigstens drei Evakuierungsöffnungen und drei Begasungsöffnungen vorgesehen, um den Gasvolumenstrom nicht nur punktuell, sondern in einer breiten Form einströmen zu lassen. Dies führt zu einer Verbesserung der Verteilung des Gasvolumenstroms innerhalb der Verpackung und zu einer Steigerung der Effizienz. Es ist eine geringere Gasmenge notwendig und die Begasungszeit zum Verdrängen der Sauerstoffmoleküle kann weiter verkürzt werden.In an advantageous embodiment, a plurality of evacuation openings and a plurality of gassing openings are provided, wherein the total cross section of the evacuation openings differs from the total cross section of the gassing openings by a maximum of 20%, preferably by a maximum of 5%. This provides a large gas flow rate to further increase the fumigation efficiency, which further reduces the processing time, thus maximizing the packaging machine's performance. Preferably, at least three evacuation openings and three gassing openings are provided in order to allow the gas volume flow to flow in not only selectively but in a wide shape. This leads to an improvement of the distribution of the gas volume flow within the packaging and to an increase in the efficiency. A smaller amount of gas is necessary and the fumigation time for displacing the oxygen molecules can be further shortened.

Die Evakuierungsöffnung/-en und die Begasungsöffnung/-en sind bevorzugt derart angeordnet, dass ein U-förmiger Strömungsverlauf des Gasvolumenstroms in der Verpackung von der Begasungsöffnung zur Evakuierungsöffnung erzeugbar ist, der für ein verbessertes Strömungsverhalten und eine verbesserte Effizienz sorgt.The evacuation opening / s and the gassing opening (s) are preferably arranged such that a U-shaped flow profile of the gas volume flow in the packaging can be generated from the gassing opening to the evacuation opening, which provides improved flow behavior and improved efficiency.

In einer vorteilhaften Ausgestaltung sind die Evakuierungsöffnung/-en und die Begasungsöffnung/-en derart angeordnet, dass ein U-förmiger Strömungsverlauf des Gasvolumenstroms auch im oberen und unteren Bereich der Verpackung von der Begasungsöffnung zur Evakuierungsöffnung erzeugbar ist, um den Restsauerstoffgehalt weiter zu minimieren.In an advantageous embodiment, the evacuation opening / s and the gassing opening / s are arranged such that a U-shaped flow profile of the gas volume flow can also be generated in the upper and lower regions of the packaging from the gassing opening to the evacuation opening in order to further minimize the residual oxygen content.

Vorzugsweise sind die Evakuierungsöffnung und die Begasungsöffnung jeweils an einem entgegengesetzten Ende der gemeinsamen Seite angeordnet, um das Strömungsverhalten des Gasvolumenstroms zu verbessern.Preferably, the evacuation port and the gassing opening are each arranged at an opposite end of the common side in order to improve the flow behavior of the gas volume flow.

Bevorzugt ist die Begasungsöffnung im Siegelwerkzeug oberhalb eines Randes der Verpackung angeordnet, um eine direkte ungehinderte Strömung in die Verpackung zu gewährleisten.Preferably, the gassing opening in the sealing tool is arranged above an edge of the packaging in order to ensure a direct unimpeded flow into the packaging.

Im Folgenden wird ein vorteilhaftes Ausführungsbeispiel der Erfindung anhand einer Zeichnung näher erläutert. Im Einzelnen zeigen:

Fig. 1
eine perspektivische Ansicht einer Verpackungsmaschine,
Fig. 2a
ein Siegelwerkzeug in schematischer Ansicht nach dem Stand der Technik,
Fig. 2b
eine Verpackung in schematischer Ansicht mit einem Strömungsverlauf nach dem Stand der Technik,
Fig. 3a
ein erfindungsgemäßes Siegelwerkzeug in schematischer Ansicht,
Fig. 3b
eine Verpackung in schematischer Ansicht mit einem Strömungsverlauf des erfindungsgemäßen Siegelwerkzeugs.
In the following, an advantageous embodiment of the invention is explained in detail with reference to a drawing. In detail show:
Fig. 1
a perspective view of a packaging machine,
Fig. 2a
a sealing tool in a schematic view according to the prior art,
Fig. 2b
a packaging in a schematic view with a flow path according to the prior art,
Fig. 3a
an inventive sealing tool in a schematic view,
Fig. 3b
a packaging in a schematic view with a flow course of the sealing tool according to the invention.

Gleiche Komponenten sind in den Figuren durchgängig mit gleichen Bezugszeichen versehen.The same components are provided throughout the figures with the same reference numerals.

Figur 1 zeigt in perspektivischer Ansicht ein erstes Ausführungsbeispiel einer erfindungsgemäßen Verpackungsmaschine 1. Bei diesem Ausführungsbeispiel handelt es sich um eine Schalenverschließmaschine ("Traysealer"). Die Verpackungsmaschine 1 verfügt über ein Maschinengestell 2, auf dem eine Siegelstation 3 zum Verschließen sowie gegebenenfalls zum Evakuieren, Begasen und/oder Siegeln von zugeführten, schalenförmigen Behältern sowie zum Schneiden von einer zum Verschließen verwendeten Deckelfolie angeordnet ist. Die Siegelstation 3 befindet sich unter einer zu öffnenden Haube 4. FIG. 1 shows a perspective view of a first embodiment of a packaging machine 1 according to the invention. In this embodiment, it is a tray sealing machine ("Traysealer"). The packaging machine 1 has a machine frame 2, on which a sealing station 3 is arranged for closing and optionally for evacuating, gasifying and / or sealing supplied, cup-shaped containers and for cutting a cover film used for closing. The sealing station 3 is located under a hood 4 to be opened.

Die Verpackungsmaschine 1 verfügt ferner über ein Zuführband 5 zum Zuführen der Verpackungen, ein Abführband 6 zum Abtransportieren der verschlossenen Verpackungen, eine Folienzuführrolle 7 zum Aufnehmen und Zuführen einer Rolle einer Deckelfolie, eine Folienspannvorrichtung 8 zum Spannen der Deckelfolie, sowie einen Folienrestaufwickler 9 zum Aufwickeln der nach dem Versiegeln verbleibenden Folienreste. Eine Anzeige 10 ermöglicht dem Bediener der Verpackungsmaschine 1 das Überprüfen und Steuern des Betriebs der Verpackungsmaschine 1. An der Anzeige 10 können zu diesem Zweck Bedienelemente 10a vorgesehen sein, beispielsweise Bedienfelder oder Schalter, um den Betrieb der Verpackungsmaschine 1 zu beeinflussen. Es können Evakuierungseinstellungen wie Vakuumwert oder Evakuierungszeiten sowie Begasungseinstellungen wie Gasmenge und Sollwerte für einen Restsauerstoffwert in Rezepten für unterschiedliche Verpackungen bzw. Produkte in der Steuerung gespeichert und verwaltet werden.The packaging machine 1 further has a feed belt 5 for feeding the packages, a discharge belt 6 for transporting the sealed packages, a film feed roller 7 for picking up and feeding a roll of lid film, a film tensioning device 8 for tensioning the lid film, and a film remover 9 for winding the film after sealing, remaining film residues. A display 10 allows the operator of the packaging machine 1 to check and control the operation of the packaging machine 1. On the display 10 may be provided for this purpose controls 10 a, such as panels or switches to affect the operation of the packaging machine 1. Evacuation settings such as vacuum level or evacuation times, as well as gassing settings such as gas volume and setpoint oxygen residuals, can be stored and managed in recipes for different packages or products in the controller.

Fig. 2a zeigt ein Siegelwerkzeug 11 in Form eines Siegelwerkzeugunterteils 12, das für eine Verpackung 20 vorgesehen ist. Das Siegelwerkzeugunterteil 12 weist auf der ersten bzw. linken Seite 13 fünf Begasungsöffnungen 14 und auf der gegenüberliegenden bzw. zweiten Seite 15 vier Evakuierungsöffnungen 16 auf. Diese Art der Anordnung von gegenüberliegenden Begasungs- und Evakuierungsöffnungen ist aus dem Stand der Technik bekannt. Fig. 2a shows a sealing tool 11 in the form of a sealing tool lower part 12, which is provided for a package 20. The sealing tool lower part 12 has five gassing openings 14 on the first or left side 13 and four evacuation openings 16 on the opposite or second side 15. This type of arrangement of opposed gassing and evacuation ports is known in the art.

Ein sich daraus ergebender Strömungsverlauf des Gasvolumenstroms 17 ist in Fig. 2b schematisch dargestellt. Ein erster Teil 17a des Gasvolumenstroms 17 strömt im oberen Bereich 18 der Verpackung 20, die eine Mulde 30 zur Aufnahme eines Lebensmittel aufweist, in einem weitgehend linearen Verlauf von einer Begasungsöffnung 14 zu einer Evakuierungsöffnung 16. Ein zweiter Teil 17b des Gasvolumenstroms strömt nach unten in einen unteren Bereich 19 der Verpackung 20. Dabei kommt es zu einer Umkehr der Strömungsrichtung und zu einem Kreuzungspunkt 17c, sobald die Strömung von unten zurück in den oberen Bereich 18 und zur Evakuierungsöffnung 16 gelangt. Dabei treten Turbulenzen und somit Strömungsverluste auf.A resulting flow profile of the gas volume flow 17 is in Fig. 2b shown schematically. A first part 17 a of the gas volume flow 17 flows in the upper part Area 18 of the package 20, which has a recess 30 for receiving a food, in a largely linear course from a gassing opening 14 to an evacuation opening 16. A second part 17b of the gas flow stream flows down into a lower portion 19 of the package 20. This comes It leads to a reversal of the flow direction and to a crossing point 17 c, as soon as the flow from below back into the upper region 18 and to the evacuation port 16 passes. This causes turbulence and thus flow losses.

Fig. 3a zeigt ein erfindungsgemäßes Siegelwerkzeug 21 in Form eines Siegelwerkzeugunterteils 22. An der den Begasungsöffnungen 24 gegenüberliegenden Seite 25 sind keine Begasungs- oder Evakuierungsöffnungen vorgesehen. Sowohl die Begasungsöffnungen 24 wie auch die Evakuierungsöffnungen 26 sind nur an einer Seite 23 gemeinsam angeordnet. Die vier in Fig. 3a dargestellten Begasungsöffnungen 24 sind am rechten Ende der Seite 23 und die vier Evakuierungsöffnungen 26 am linken Ende der Seite 23 angeordnet, um einen maximalen Abstand zu erzeugen, der für einen U-förmigen Verlauf des Gasvolumenstroms 27 besonders vorteilhaft ist. Dabei sind die Begasungsöffnungen 24 oberhalb des oberen Schalenrands 31 der Verpackung 20 angeordnet. Fig. 3a shows a sealing tool 21 according to the invention in the form of a sealing tool lower part 22. At the gassing openings 24 opposite side 25 no gassing or evacuation openings are provided. Both the gassing openings 24 and the evacuation openings 26 are arranged together only on one side 23. The four in Fig. 3a shown gassing 24 are arranged at the right end of the page 23 and the four evacuation openings 26 at the left end of the side 23 to produce a maximum distance, which is particularly advantageous for a U-shaped course of the gas flow 27. In this case, the gassing openings 24 are arranged above the upper shell edge 31 of the packaging 20.

In Fig. 3b ist der Gasvolumenstrom 27 mit dem Anteil 27a im oberen Bereich 18 der Verpackung 20 und mit dem Anteil 27b im unteren Bereich 19 der Verpackung 20 dargestellt. Dieser U-förmige Strömungsverlauf zeigt, dass keine Kreuzungspunkte oder miteinander kollidierende Gasvolumenströme vorhanden sind.In Fig. 3b the gas volume flow 27 is shown with the portion 27a in the upper region 18 of the package 20 and with the portion 27b in the lower region 19 of the package 20. This U-shaped flow pattern shows that there are no crossing points or colliding gas flow rates.

Die Anzahl der Evakuierungsöffnungen 24 und der Begasungsöffnungen 26 muss nicht identisch sein, wobei es sich als vorteilhaft verwiesen hat, wenn der Gesamtquerschnitt der Begasungsöffnungen 24 annähernd dem Gesamtquerschnitt der Evakuierungsöffnungen 26 entspricht. Die Ausrichtung der Evakuierungsöffnungen 26 und der Begasungsöffnungen 24 ist nicht auf die horizontale Ausrichtung, wie in der Fig. 3a dargestellt, beschränkt.The number of evacuation openings 24 and the gassing openings 26 does not have to be identical, and it has proven to be advantageous if the total cross section of the gassing openings 24 corresponds approximately to the total cross section of the evacuation openings 26. The orientation of the evacuation openings 26 and the gassing openings 24 is not on the horizontal orientation, as in Fig. 3a shown, limited.

Im Fall, dass keine Evakuierung auch vor dem Begasen stattfindet, dient die Evakuierungsöffnung 26 als Auslassöffnung für den Gasvolumenstrom bzw. die verdrängte Atmosphäre.In the event that no evacuation takes place before gassing, the evacuation opening 26 serves as an outlet opening for the gas volume flow or the displaced atmosphere.

Bei Verpackungen 20 und zu deren Aufnahme geeigneten Siegelwerkzeugen 21, die eine runde oder ovale Form aufweisen, ist im Kontext der Erfindung eine erste Seite 23 eine Hälfte und eine zweite Seite 25 die gegenüberliegende Hälfte des Kreises bzw. des Ovals.In the case of packages 20 and sealing tools 21 suitable for receiving them, which have a round or oval shape, a first side 23 is one in the context of the invention Half and a second side 25 the opposite half of the circle or the oval.

Claims (7)

Verpackungsmaschine (1) mit einer Siegelstation (3) zum Siegeln einer Verpackung (20), die eine Mulde (30) und eine Deckelfolie (8) umfasst, wobei die Siegelstation (3) ein Siegelwerkzeug (22) mit wenigstens je einer Evakuierungsöffnung (26) zum Abführen der Atmosphäre und je einer Begasungsöffnung (24) zum Zuführen eines Gasvolumenstroms (27) umfasst, dadurch gekennzeichnet, dass die Evakuierungsöffnung (26) und die Begasungsöffnung (24) an einer gemeinsamen Seite (23) des Siegelwerkzeugs (21) angeordnet sind.A packaging machine (1) having a sealing station (3) for sealing a package (20) comprising a trough (30) and a cover sheet (8), the sealing station (3) having a sealing tool (22) with at least one evacuation opening (26 ) for discharging the atmosphere and a respective gassing opening (24) for supplying a gas volume flow (27), characterized in that the evacuation opening (26) and the gassing opening (24) on a common side (23) of the sealing tool (21) are arranged , Verpackungsmaschine nach Anspruch 1, dadurch gekennzeichnet, dass mehrere Evakuierungsöffnungen (26) und mehrere Begasungsöffnungen (24) vorgesehen sind, wobei sich der Gesamtquerschnitt der Evakuierungsöffnungen (26) von dem Gesamtquerschnitt der Begasungsöffnungen (24) maximal um 20 % unterscheidet.Packaging machine according to claim 1, characterized in that a plurality of evacuation openings (26) and a plurality of gassing openings (24) are provided, wherein the total cross section of the evacuation openings (26) differs from the total cross section of the gassing openings (24) by a maximum of 20%. Verpackungsmaschine nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass wenigstens drei Evakuierungs- (26) und wenigstens drei Begasungsöffnungen (24) vorgesehen sind.Packaging machine according to one of the preceding claims, characterized in that at least three evacuation (26) and at least three gassing openings (24) are provided. Verpackungsmaschine nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Evakuierungs- (26) und die Begasungsöffnung (24) derart angeordnet sind, dass ein U-förmiger Strömungsverlauf (27a, 27b) des Gasvolumenstroms (27) in der Verpackung (20) von der Begasungsöffnung (24) zur Evakuierungsöffnung (26) erzeugbar ist.Packaging machine according to one of the preceding claims, characterized in that the evacuation (26) and the gassing (24) are arranged such that a U-shaped flow path (27a, 27b) of the gas volume flow (27) in the package (20) of the gassing opening (24) to the evacuation opening (26) can be generated. Verpackungsmaschine nach Anspruch 4, dadurch gekennzeichnet, dass sich ein U-förmiger Strömungsverlauf (27a, 27b) im oberen (18) und unteren Bereich (19) der Verpackung (20) ergibt.Packaging machine according to claim 4, characterized in that a U-shaped flow path (27a, 27b) results in the upper (18) and lower region (19) of the packaging (20). Verpackungsmaschine nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Evakuierungsöffnung (26) und die Begasungsöffnung (24) jeweils an einem entgegengesetzten Ende der gemeinsamen Seite (23) des Siegelwerkzeugs (22) angeordnet sind.Packaging machine according to one of the preceding claims, characterized in that the evacuation opening (26) and the gassing opening (24) are each arranged at an opposite end of the common side (23) of the sealing tool (22). Verpackungsmaschine nach einem der vorangehenden Ansprüche dadurch gekennzeichnet, dass die Begasungsöffnung (24) derart im Siegelwerkzeug (22) angeordnet ist, dass sie nach dem Einlegen einer Verpackung (20) in das Siegelwerkzeug (22) oberhalb eines Randes (31) der Verpackung (20) angeordnet ist.Packaging machine according to one of the preceding claims, characterized in that the gassing opening (24) is arranged in the sealing tool (22) that, after inserting a package (20) into the sealing tool (22) above an edge (31) of the packaging (20 ) is arranged.
EP20130001345 2012-03-23 2013-03-15 Packaging machine with sealing station for introducing a gas into a package Active EP2641835B1 (en)

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DE102012005891A DE102012005891A1 (en) 2012-03-23 2012-03-23 Packaging machine with sealing station for gassing a packaging

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EP2641835A1 true EP2641835A1 (en) 2013-09-25
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WO2016193006A1 (en) 2015-05-29 2016-12-08 Cryovac, Inc. Apparatus and process for packaging a product

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EP3450327B1 (en) * 2017-08-30 2020-07-29 MULTIVAC Sepp Haggenmüller SE & Co. KG Sealing station and method for the production of skin packages with tear-open corner
GB2576735A (en) * 2018-08-29 2020-03-04 Proseal Uk Ltd Packaging apparatus
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CN103318448B (en) 2016-09-14
DE102012005891A1 (en) 2013-09-26
ES2537896T3 (en) 2015-06-15
US9481480B2 (en) 2016-11-01
US20130247510A1 (en) 2013-09-26
EP2641835B1 (en) 2015-05-06
CN103318448A (en) 2013-09-25

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