EP1521706B1 - Method and packaging machine for packaging a product placed in a tray - Google Patents

Method and packaging machine for packaging a product placed in a tray Download PDF

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Publication number
EP1521706B1
EP1521706B1 EP03793653A EP03793653A EP1521706B1 EP 1521706 B1 EP1521706 B1 EP 1521706B1 EP 03793653 A EP03793653 A EP 03793653A EP 03793653 A EP03793653 A EP 03793653A EP 1521706 B1 EP1521706 B1 EP 1521706B1
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EP
European Patent Office
Prior art keywords
tray
sealing
tool
product
packaging
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.)
Revoked
Application number
EP03793653A
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German (de)
French (fr)
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EP1521706A1 (en
Inventor
Johann Natterer
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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    • 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
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B65B7/162—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by feeding web material to securing means
    • B65B7/164—Securing by heat-sealing

Definitions

  • the invention relates to a method for packaging a product located in a tray and a packaging machine for carrying out such a method.
  • Atmos packs by hermetic closure to the action of atmospheric oxygen prevents perishable food.
  • an impermeable film is sealed as a cover on the shell, from the previously sucked the air by evacuation and possibly replaced by inert gas.
  • the contents of the tray must not project beyond the edge of the tray when using a flat covering foil, since otherwise the covering foil can form wrinkles and leaks in the sealed seam during sealing.
  • EP-A-1 038 773 a packaging machine with a schematically indicated closing station and a device for feeding trays to be closed by a top film into or out of the closing station is known.
  • such Verschlegstationen are formed in the known packaging machines as evacuating and sealing station.
  • EP 0 314 546 A1 discloses a device for packaging products projecting beyond a container edge.
  • an upper film which serves for the closure, is clamped and heated between an upper part and a lower part of a tool.
  • the container containing the product is moved in the direction of the upper film, so that the product is pressed against the softened upper film and deforms it.
  • a welding head for welding the top film to the container is actuated.
  • the object of the invention is to avoid the disadvantages described above in a method for packaging or a packaging machine and to provide a method and a device, with the manufacture of a package with a shell and one on the edge of the shell after above projecting product is reliably possible.
  • the product packages created in this way should be both dense and allow a favorable presentation on the outside.
  • Fig. 3 shows a sectional view of an evacuating and sealing device 4 from an upper tool 5 and a lower tool 6.
  • the upper tool 5 is fixedly mounted on a frame.
  • the lower tool 6 can be moved up and down via a knee lever device or a pneumatic device in the direction of the arrow 7 into the lowered position shown in FIG. 3 or into the closed position shown in FIG. 4.
  • the upper tool 5 comprises an open towards the lower tool interior 8, in which a lower tool towards a concave opening having molding device 9 is firmly mounted.
  • a conventional sealing tool 10 is provided, which is movable via a pneumatic drive from the retracted position shown in Fig. 3 in the seal position shown in Fig. 8.
  • a cutting device 11 is provided, which has an externally extending around the sealing device around cutting blade, which is also pneumatically movable between the retracted in Fig. 3 position and the cutting position shown in Fig. 9.
  • the lower tool has an inner space 12 facing the upper tool. In the plane formed by the lower edge of the upper tool 5, an upper film 13 is guided.
  • a device referred to below as a tray support 14 for receiving a filled with the product 3 shell 1 is provided, which is initially outside the evacuation and sealing device 4.
  • the tray carrier can be introduced into the position shown in FIG. 3 between the upper die 5 and lower die part 6 of the evacuating and sealing device.
  • the shell carrier 14 has a frame 15 which is arranged substantially at a height corresponding to the lower edge of the upper tool 5, ie the upper level of the frame 15 is located directly below the plane of the upper film 13.
  • the frame 15 On its underside, the frame 15 has two arranged at a distance from each other bolts 16, which serve to guide the actual support member 17 of the switch carrier 14.
  • the support member 17 has on the two outer sides of the bolt 16 running plain bearings 19. Further, on the support member 17 is provided by a shape and size of the edge 2 of the male shell 1 certain edge, which receives on its the sealing tool 10 facing the upper edge of the shell 1 with its edge. Shape and size of the facing edge 20 of the sealing tool corresponds to the shape and size of the edge of the support member 17th
  • the upper part has on the outside at its edge facing the lower tool a circumferential sealing ring 21, and the lower tool 6 on its side facing the upper tool a sealing ring 22.
  • the interior 8 of the upper tool is connected via a bore 23 with a evacuation device 24 shown schematically.
  • the mold 9 has on its side facing away from the bottom tool round running holes 25 for connecting the lower tool side facing the interior 8, so that when connecting vacuum through the bore 23 and a suction on the lower tool side facing the bore 25 is applied ,
  • pneumatic actuators 26 are provided for moving the sealing tool up and down and pneumatic drive 27 for moving the cutting tool up and down.
  • the interior 12 of the lower tool 6 has initially on its bottom an abutment 28 for supporting the support member 17.
  • the interior 12 is connected via a bore 29 with an evacuation and gassing device indicated schematically in FIG. 7A.
  • the frame 15 is fixed in the height shown in FIG. 3 relative to the height of the upper tool 5, but yielding to the extent that it encounters a corresponding pressure on the lower tool 6 is pressed by the lower tool against the upper tool so that the interior of the evacuating and sealing device is hermetically sealed to the outside.
  • the evacuating and sealing device 4 is opened in the position shown in FIG. In this position, the loaded with the product 3 shell 1 carrying tray support 14 is moved in the direction of arrow 31 in the centered position shown between the tool parts.
  • the schematically indicated in Fig. 4 drive 33 of the lower tool 6 is operated so that the lower tool in the Fig. 4 shown closed position is moved, in such a way that the upper film 13 and the frame 15 between the upper tool 5 and lower tool 6 are trapped.
  • the flat, flat top film 13 is clamped around wrinkle-free.
  • an evacuation takes place via the evacuating device 24 above the upper film, with the consequence that it is sucked onto the inner wall of the forming device 9 and thus stretched.
  • the shell 1 is held so deep by the retracted position of the support member 17 that the product 3 still has a distance from the plane of the top film 13.
  • a schematically indicated drive 33 is produced the support member 17 moves relative to the frame 15 as far as the upper tool 5 out that its upper edge is in the original plane of the top film or in a plane with the surface of the frame 15 executed to the upper tool.
  • the Evakuier sensible 24 remains turned on.
  • the evacuation and gassing device 30 is additionally turned on.
  • an evacuation first takes place via a channel 34 extending around the supporting part 17 between the supporting part 17 and the frame 15.
  • This channel opens at a point which is separated by the upper film 13 against the interior, so that the space 35 between product 3 and stretched top film 13 is evacuated.
  • a supply of an inert gas into the space 35 is subsequently carried out.
  • the tray carrier is adapted to receive a plurality of trays and insert them into the sealing station for simultaneous sealing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Vacuum Packaging (AREA)
  • Closing Of Containers (AREA)
  • Container Filling Or Packaging Operations (AREA)
  • Basic Packing Technique (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Packages (AREA)

Abstract

The packaging machine for food in trays comprises mobile upper (5) and lower (6) sections which enclose a chamber (8) in which the tray is placed. Rollers feed film (13) into the chamber and it is then lifted away from the food and sealed to the tray at its edges. An Independent claim is included for a method for packing food in trays.

Description

Die Erfindung betrifft ein Verfahren zum Verpacken eines in einer Schale befindlichen Produktes sowie eine Verpackungsmaschine zur Durchführung eines solchen Verfahrens.The invention relates to a method for packaging a product located in a tray and a packaging machine for carrying out such a method.

Viele Gegenstände und Produkte werden bei der Vermarktung in vorgefertigte Schalten verpackt und mit einer sogenannten Stretchfolie verschlossen. Dabei wird eine dehnfähige, meist transparente Folie um die Schale gewickelt, um den Inhalt zu fixieren und vor Einflüssen von außen zu schützen. Da kein hermetischer Abschluß des Inhaltes erfolgt, kann der Luftsauerstoff nachteilig auf verderbliche Produkte einwirken. Die Packungen sind aber optisch sehr attraktiv, besonders, wenn Lebensmittel wie Fleischwaren den Schalenrand überragen und mit der transparenten Abdeckung sehr plastisch wirken.Many items and products are packaged in pre-fabricated shawls during marketing and sealed with a so-called stretch film. In this case, a stretchable, usually transparent film is wrapped around the shell to fix the contents and protect against external influences. Since no hermetic closure of the contents takes place, the atmospheric oxygen can adversely affect perishable products. But the packages are visually very attractive, especially when food such as meat products tower over the edge of the bowl and look very plastic with the transparent cover.

Bei Vakuum- oder sogenannten Atmos-Packungen wird durch hermetischen Verschluß die Einwirkung von Luftsauerstoff auf verderbliche Lebensmittel verhindert. Hierzu wird eine undurchlässige Folie als Abdeckung auf die Schale aufgesiegelt, aus der zuvor die Luft durch Evakuieren abgesaugt und eventuell durch Inertgas ersetzt wird.In vacuum or so-called Atmos packs by hermetic closure to the action of atmospheric oxygen prevents perishable food. For this purpose, an impermeable film is sealed as a cover on the shell, from the previously sucked the air by evacuation and possibly replaced by inert gas.

Wenn übliche Schalen-Versiegelungsmaschinen eingesetzt werden, darf bei Verwendung einer planebenen Abdeckfolie der Packungsinhalt den Schalenrand nicht überragen, da sonst die Abdeckfolie Falten bilden kann und beim Aufsiegeln undichte Stellen in der Siegelnaht entstehen.If conventional tray sealing machines are used, the contents of the tray must not project beyond the edge of the tray when using a flat covering foil, since otherwise the covering foil can form wrinkles and leaks in the sealed seam during sealing.

Aus der US 6,408,598 ist ein Verfahren zur Herstellung einer solchen Packung bekannt. Es wird vorgeschlagen, eine Abdeckfolie, die erwärmt wurde, in einer beheizten Mulde über dem Produkt zu verformen. Dabei besteht die Gefahr, daß im Randbereich Falten entstehen, die in der Siegelzone Leckagen verursachen. Nachteilig ist auch die Erwärmung der Abdeckfolie vor oder während der Verformung, da schrumpffähige Folien bei höheren Temperaturen ihre Schrumpfeigenschaft verlieren.From US 6,408,598 a method for producing such a package is known. It is proposed to deform a cover sheet that has been heated in a heated trough over the product. There is a risk that arise in the edge region wrinkles that cause leaks in the sealing zone. Another disadvantage is the heating of the cover before or during deformation, since shrinkable films lose their shrinkage property at higher temperatures.

Aus der EP-A-1 038 773 ist eine Verpackungsmaschine mit einer schematisch angedeuteten Verschließstation und einer Einrichtung zum Zuführen von mit einer Oberfolie zu verschließenden Schalen in die Verschließstation bzw. aus dieser heraus bekannt. Insbesondere sind solche Verschließstationen bei dem bekannten Verpackungsmaschinen als Evakuier- und Siegelstation ausgebildet.From EP-A-1 038 773 a packaging machine with a schematically indicated closing station and a device for feeding trays to be closed by a top film into or out of the closing station is known. In particular, such Verschließstationen are formed in the known packaging machines as evacuating and sealing station.

Aus der EP 0 314 546 A1 ist eine Vorrichtung zum Verpacken von über einen Behälterrand herausstehenden Produkten bekannt. Dabei wird eine Oberfolie, die zum Verschluss dient, zwischen einem Oberteil und einem Unterteil eines Werkzeugs eingeklemmt und erhitzt. Anschließend wird der das Produkt enthaltende Behälter in Richtung der Oberfolie bewegt, sodass das Produkt gegen die erweichte Oberfolie gedrückt wird und diese deformiert. Gleichzeitig mit der Deformation der Oberfolie wird ein Schweißkopf zum Verschweißen der Oberfolie mit dem Behälter betätigt.EP 0 314 546 A1 discloses a device for packaging products projecting beyond a container edge. In this case, an upper film, which serves for the closure, is clamped and heated between an upper part and a lower part of a tool. Subsequently, the container containing the product is moved in the direction of the upper film, so that the product is pressed against the softened upper film and deforms it. Simultaneously with the deformation of the top film, a welding head for welding the top film to the container is actuated.

Aufgabe der Erfindung ist es, die oben beschriebenen Nachteile bei einem Verfahren zum Verpacken bzw. einer Verpackungsmaschine zu vermeiden und ein Verfahren und eine Vorrichtung zu schaffen, mit der die Herstellung einer Verpackung mit einer Schale und einem über den Schalenrand nach oben hervorstehenden Produkt zuverlässig möglich ist. Die so geschaffenen Produktpackungen sollen sowohl dicht sein als auch rein äußerlich eine vorteilhafte Präsentation erlauben.The object of the invention is to avoid the disadvantages described above in a method for packaging or a packaging machine and to provide a method and a device, with the manufacture of a package with a shell and one on the edge of the shell after above projecting product is reliably possible. The product packages created in this way should be both dense and allow a favorable presentation on the outside.

Diese Aufgabe wird durch das in Patentanspruch 1 beschriebene Verfahren sowie die in Anspruch 4 beschriebene Verpackungsmaschine gelöst.This object is achieved by the method described in claim 1 and the packaging machine described in claim 4.

Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet.Further developments of the invention are characterized in the subclaims.

Weitere Merkmale und Zweckmäßigkeiten der Erfindung ergeben sich aus der Beschreibung eines bevorzugten Ausführungsbeispieles anhand der Figuren. Von den Figuren zeigen:

Fig. 1
das Beispiel einer Packung mit überstehendem Produkt;
Fig. 2
einen Schalenträger mit eingelegter Schale und überstehendem Produkt im Querschnitt;
Fig. 3
den in Fig. 2 gezeigten Schalenträger in einer geöffneten Evakuier- und Versiegelungsstation;
Fig. 4
die in Fig. 3 gezeigte Evakuier- und Versiegelungsstation in geschlossenem Zustand;
Fig. 5
die geschlossene Evakuier- und Versiegelungsstation mit angelegtem Vakuum mit noch abgesenkter Schale;
Fig. 6
die in Fig. 5 gezeigte Vorrichtung mit angehobener Schale;
Fig. 7A
die in Fig. 6 gezeigte Evakuier- und Versiegelungsstation mit Evakuierung des Packungsinneren und gegebenenfalls Gasspülung;
Fig. 7B
eine ausschnittsweise Vergrößerung aus Fig. 7A;
Fig. 8
die Evakuier- und Versiegelungsstation im Zustand des Versiegeln;
Fig. 9
die Evakuier- und Versiegelungsstation mit betätigtem Schneidwerkzeug;
Fig. 10
die Evakuier- und Versiegelungsstation mit Belüftung des Kammerinneren; und
Fig. 11
die geöffnete Evakuier- und Versiegelungsstation zum Herausführen des Schalenträgers mit fertiger Packung.
Other features and advantages of the invention will become apparent from the description of a preferred embodiment with reference to FIGS. From the figures show:
Fig. 1
the example of a product overhanging package;
Fig. 2
a shell carrier with inserted shell and protruding product in cross section;
Fig. 3
the tray carrier shown in Figure 2 in an open evacuation and sealing station.
Fig. 4
the evacuating and sealing station shown in Figure 3 in the closed state.
Fig. 5
the closed evacuation and sealing station with applied vacuum with the bowl still lowered;
Fig. 6
the device shown in Figure 5 with raised shell.
Fig. 7A
the evacuation and sealing station shown in Figure 6 with evacuation of the package interior and optionally gas purging;
Fig. 7B
a partial enlargement of Fig. 7A;
Fig. 8
the evacuation and sealing station in the state of sealing;
Fig. 9
the evacuation and sealing station with activated cutting tool;
Fig. 10
the evacuation and sealing station with ventilation of the chamber interior; and
Fig. 11
the opened evacuation and sealing station for removing the tray carrier with a finished package.

Fig. 1 zeigt ein Beispiel einer Packung mit der eigentlichen Schale 1 und dem über den Rand 2 der Schale nach oben hervorstehenden Produkt 3.1 shows an example of a package with the actual shell 1 and the product 3 projecting upwards over the edge 2 of the shell.

Fig. 3 zeigt eine Schnittdarstellung einer Evakuier- und Versiegelungseinrichtung 4 aus einem Oberwerkzeug 5 und einem Unterwerkzeug 6. In dem Ausführungsbeispiel ist das Oberwerkzeug 5 an einem Rahmen fest montiert. Das Unterwerkzeug 6 ist über eine Kniehebeleinrichtung oder eine pneumatische Einrichtung in Richtung des Pfeiles 7 in die in Fig. 3 gezeigte abgesenkte Stellung bzw. in die in Fig. 4 gezeigte geschlossene Stellung auf- und abbewegbar. Das Oberwerkzeug 5 umfaßt einen zum Unterwerkzeug hin offenen Innenraum 8, in dem eine zum Unterwerkzeug hin eine konkave Öffnung aufweisende Formeinrichtung 9 fest montiert ist. Diese quasi übergreifend ist ein übliches Siegelwerkzeug 10 vorgesehen, welches über einen pneumatischen Antrieb aus der in Fig. 3 gezeigten zurückgezogenen Stellung in die in Fig. 8 gezeigte Siegelstellung bewegbar.ist. Schließlich ist eine Schneideinrichtung 11 vorgesehen, die ein außen um die Siegeleinrichtung herum verlaufendes Schneidmesser aufweist, welches ebenfalls pneumatisch bewegbar ist zwischen der in Fig. 3 zurückgezogenen Stellung und der in Fig. 9 gezeigten Schneidstellung.Fig. 3 shows a sectional view of an evacuating and sealing device 4 from an upper tool 5 and a lower tool 6. In the embodiment, the upper tool 5 is fixedly mounted on a frame. The lower tool 6 can be moved up and down via a knee lever device or a pneumatic device in the direction of the arrow 7 into the lowered position shown in FIG. 3 or into the closed position shown in FIG. 4. The upper tool 5 comprises an open towards the lower tool interior 8, in which a lower tool towards a concave opening having molding device 9 is firmly mounted. This quasi-comprehensive, a conventional sealing tool 10 is provided, which is movable via a pneumatic drive from the retracted position shown in Fig. 3 in the seal position shown in Fig. 8. Finally, a cutting device 11 is provided, which has an externally extending around the sealing device around cutting blade, which is also pneumatically movable between the retracted in Fig. 3 position and the cutting position shown in Fig. 9.

Das Unterwerkzeug weist einen dem Oberwerkzeug zugewandten Innenraum 12 auf. In der vom unteren Rand des Oberwerkzeuges 5 gebildeten Ebene ist eine Oberfolie 13 geführt.The lower tool has an inner space 12 facing the upper tool. In the plane formed by the lower edge of the upper tool 5, an upper film 13 is guided.

Ferner ist eine im weiteren als Schalenträger 14 bezeichnete Einrichtung zur Aufnahme einer mit dem Produkt 3 gefüllten Schale 1 vorgesehen, die sich zunächst außerhalb der Evakuier- und Versiegelungseinrichtung 4 befindet. Mittels einer beispielsweise in der genannten EP-A 1 038 773 beschriebenen Transporteinrichtung ist der Schalenträger in die in Fig. 3 gezeigte Stellung zwischen Werkzeugoberteil 5 und Werkzeugunterteil 6 der Evakuier- und Versiegelungseinrichtung einführbar.Furthermore, a device referred to below as a tray support 14 for receiving a filled with the product 3 shell 1 is provided, which is initially outside the evacuation and sealing device 4. By means of a transport device described, for example, in the cited EP-A 1 038 773, the tray carrier can be introduced into the position shown in FIG. 3 between the upper die 5 and lower die part 6 of the evacuating and sealing device.

Der Schalenträger 14 weist einen Rahmen 15 auf, der im wesentlichen in einer Höhe angeordnet ist, die der Unterkante des Oberwerkzeuges 5 entspricht, d.h. die obere Ebene des Rahmens 15 liegt unmittelbar unter der Ebene der Oberfolie 13. An seiner Unterseite weist der Rahmen 15 zwei in einem Abstand voneinander angeordnete Bolzen 16 auf, die zur Führung für das eigentliche Tragteil 17 des Schaltenträgers 14 dienen. Das Tragteil 17 weist an den beiden äußeren Seiten auf den Bolzen 16 laufende Gleitlager 19 auf. Ferner ist auf dem Tragteil 17 ein von Form und Größe des Randes 2 der aufzunehmenden Schale 1 bestimmter Rand vorgesehen, der auf seinem dem Siegelwerkzeug 10 zugewandten oberen Rand die Schale 1 mit ihrem Rand aufnimmt. Form und Größe des zugewandten Randes 20 des Siegelwerkzeuges entspricht Form und Größe des Randes des Trageiles 17.The shell carrier 14 has a frame 15 which is arranged substantially at a height corresponding to the lower edge of the upper tool 5, ie the upper level of the frame 15 is located directly below the plane of the upper film 13. On its underside, the frame 15 has two arranged at a distance from each other bolts 16, which serve to guide the actual support member 17 of the switch carrier 14. The support member 17 has on the two outer sides of the bolt 16 running plain bearings 19. Further, on the support member 17 is provided by a shape and size of the edge 2 of the male shell 1 certain edge, which receives on its the sealing tool 10 facing the upper edge of the shell 1 with its edge. Shape and size of the facing edge 20 of the sealing tool corresponds to the shape and size of the edge of the support member 17th

Das Oberteil weist außen an seinem dem Unterwerkzeug zugewandten Rand einen umlaufenden Dichtungsring 21, und das Unterwerkzeug 6 auf seiner dem Oberwerkzeug zugewandten Seite einen Dichtungsring 22 auf.The upper part has on the outside at its edge facing the lower tool a circumferential sealing ring 21, and the lower tool 6 on its side facing the upper tool a sealing ring 22.

Wie am besten aus Fig. 5 ersichtlich ist, ist der Innenraum 8 des Oberwerkzeuges über eine Bohrung 23 mit einer schematisch dargestellten Evakuiereinrichtung 24 verbunden. Die Formeinrichtung 9 weist auf ihrem dem Unterwerkzeug abgewandten Boden ringsum laufende Bohrungen 25 zum Verbinden der dem Unterwerkzeug zugewandten Seite mit dem Innenraum 8 auf, so daß bei Anschluß von Unterdruck über die Bohrung 23 auch eine Saugwirkung auf der dem Unterwerkzeug zugewandten Seite der Bohrung 25 anliegt.As best seen in Fig. 5 it can be seen, the interior 8 of the upper tool is connected via a bore 23 with a evacuation device 24 shown schematically. The mold 9 has on its side facing away from the bottom tool round running holes 25 for connecting the lower tool side facing the interior 8, so that when connecting vacuum through the bore 23 and a suction on the lower tool side facing the bore 25 is applied ,

Ferner sind Pneumatikantriebe 26 zum Auf- und Abbewegen des Siegelwerkzeuges und Pneumatikantrieb 27 zum Auf- und Abbewegen des Schneidwerkzeuges vorgesehen.Furthermore, pneumatic actuators 26 are provided for moving the sealing tool up and down and pneumatic drive 27 for moving the cutting tool up and down.

Der Innenraum 12 des Unterwerkzeuges 6 weist zunächst auf seinem Boden ein Widerlager 28 zur Auflage des Tragteiles 17 auf. Der Innenraum 12 ist über eine Bohrung 29 mit einer in Fig. 7A schematisch angedeuteten Evakuier- und Begasungseinrichtung verbunden.The interior 12 of the lower tool 6 has initially on its bottom an abutment 28 for supporting the support member 17. The interior 12 is connected via a bore 29 with an evacuation and gassing device indicated schematically in FIG. 7A.

Wie am besten aus einem Vergleich von Fig. 3 und 4 ersichtlich ist, ist der Rahmen 15 zwar in der in Fig. 3 gezeigten Höhe relativ zur Höhe des Oberwerkzeuges 5 fixiert, jedoch insoweit nachgebend, als er bei Anliegen eines entsprechenden Druckes am Unterwerkzeug 6 von dem Unterwerkzeug so gegen das Oberwerkzeug gedrückt wird, daß das Innere der Evakuier- und Versiegelungseinrichtung hermetisch nach außen abgeschlossen ist.As best seen in a comparison of FIGS. 3 and 4, the frame 15 is fixed in the height shown in FIG. 3 relative to the height of the upper tool 5, but yielding to the extent that it encounters a corresponding pressure on the lower tool 6 is pressed by the lower tool against the upper tool so that the interior of the evacuating and sealing device is hermetically sealed to the outside.

Im Betrieb ist die Evakuier- und Versiegelungseinrichtung 4 in der in Fig. 3 gezeigten Stellung geöffnet. In dieser Stellung wird der die mit dem Produkt 3 beladene Schale 1 tragende Schalenträger 14 in Richtung des Pfeiles 31 in die gezeigte zentrierte Position zwischen die Werkzeugteile gefahren. Im nächsten Schritt wird der in Fig. 4 schematisch angedeutete Antrieb 33 des Unterwerkzeuges 6 derart betätigt, daß das Unterwerkzeug in die Fig. 4 gezeigte geschlossene Stellung bewegt wird, und zwar so, daß die Oberfolie 13 und der Rahmen 15 zwischen Oberwerkzeug 5 und Unterwerkzeug 6 eingeklemmt sind. Damit ist die plane, ebene Oberfolie 13 faltenfrei ringsherum eingespannt. In dem nächsten in Fig. 5 gezeigten Schritt erfolgt über die Evakuiereinrichtung 24 ein Evakuieren oberhalb der Oberfolie mit der Folge, daß diese an die Innenwandung der Formeinrichtung 9 angesaugt und somit gereckt wird.In operation, the evacuating and sealing device 4 is opened in the position shown in FIG. In this position, the loaded with the product 3 shell 1 carrying tray support 14 is moved in the direction of arrow 31 in the centered position shown between the tool parts. In the next step, the schematically indicated in Fig. 4 drive 33 of the lower tool 6 is operated so that the lower tool in the Fig. 4 shown closed position is moved, in such a way that the upper film 13 and the frame 15 between the upper tool 5 and lower tool 6 are trapped. Thus, the flat, flat top film 13 is clamped around wrinkle-free. In the next step shown in FIG. 5, an evacuation takes place via the evacuating device 24 above the upper film, with the consequence that it is sucked onto the inner wall of the forming device 9 and thus stretched.

In dem in den Fig. 4 und 5 gezeigten Schritt ist die Schale 1 durch die zurückgezogene Stellung des Tragteiles 17 jeweils so tief gehalten, daß das Produkt 3 noch einen Abstand von der Ebene der Oberfolie 13 besitzt. Nachdem die Oberfolie in dem in Fig. 5 gezeigten Schritt an die innere Oberfläche der Formeinrichtung 9 angesaugt ist, wird in dem in Fig. 6 gezeigten Schritt mit einem schematisch angedeuteten Antrieb 33 das Tragteil 17 relativ zum Rahmen 15 soweit zum Oberwerkzeug 5 hin bewegt, daß sein oberer Rand in der ursprünglichen Ebene der Oberfolie bzw. in einer Ebene mit der zum Oberwerkzeug hingerichteten Oberfläche des Rahmens 15 liegt. Bei diesem Schritt bleibt die Evakuiereinrichtung 24 eingeschaltet.In the step shown in FIGS. 4 and 5, the shell 1 is held so deep by the retracted position of the support member 17 that the product 3 still has a distance from the plane of the top film 13. After the upper film has been sucked into the inner surface of the former 9 in the step shown in FIG. 5, in the step shown in FIG. 6 a schematically indicated drive 33 is produced the support member 17 moves relative to the frame 15 as far as the upper tool 5 out that its upper edge is in the original plane of the top film or in a plane with the surface of the frame 15 executed to the upper tool. In this step, the Evakuiereinrichtung 24 remains turned on.

In dem in Fig. 7A gezeigten Schritt wird die Evakuier- und Begasungseinrichtung 30 zusätzlich eingeschaltet. Dadurch erfolgt zunächst über einen sich ringsherum um das Tragteil 17 erstreckenden Kanal 34 zwischen Tragteil 17 und Rahmen 15 eine Evakuierung. Dieser Kanal mündet an einer Stelle, die durch die Oberfolie 13 gegen den Innenraum abgetrennt ist, so daß der Raum 35 zwischen Produkt 3 und gereckter Oberfolie 13 evakuiert wird. Für den Fall, daß es gewünscht ist, erfolgt durch entsprechendes Umschalten der Evakuier- und Begasungs- einrichtung 30 anschließend ein Zuführen eines Schutzgases in den Raum 35.In the step shown in Fig. 7A, the evacuation and gassing device 30 is additionally turned on. As a result, an evacuation first takes place via a channel 34 extending around the supporting part 17 between the supporting part 17 and the frame 15. This channel opens at a point which is separated by the upper film 13 against the interior, so that the space 35 between product 3 and stretched top film 13 is evacuated. In the event that it is desired, by means of appropriate switching of the evacuation and gassing device 30, a supply of an inert gas into the space 35 is subsequently carried out.

In dem nächsten in Fig. 8 gezeigten Schritt wird durch Einschalten des pneumatischen Antriebes 26 des Siegelwerkzeuges 10 dieses in die Siegelstellung bewegt, wodurch der Rand 2 der Schale 1 mit der Oberfolie hermetisch und faltenfrei versiegelt wird. Anschließend wird der pneumatische Antrieb 27 für die Schneideinrichtung 11 eingeschaltet derart, daß die Schneideinrichtung in die in Fig. 9 gezeigte Trennstellung bewegt wird, wodurch die fertige Packung aus der Oberfolienbahn ausgetrennt wird.In the next step shown in FIG. 8, by switching on the pneumatic drive 26 of the sealing tool 10, it moves into the sealing position, whereby the edge 2 of the shell 1 is sealed hermetically and wrinkle-free with the upper foil. Subsequently, the pneumatic drive 27 for the cutting device 11 is turned on so that the cutting device is moved to the separating position shown in Fig. 9, whereby the finished package is separated from the upper film web.

In dem darauffolgenden in Fig. 10 gezeigten Schritt erfolgt über Umschalten der Pneumatikantriebe 26 und 27 ein Zurückziehen von Schneideinrichtung 11 und Siegelwerkzeug 10 sowie ein Belüften über die Evakuiereinrichtungen 24 und 30. Durch das Belüften über die Evakuiereinrichtung 24 wird die Oberfolie 13 von der Hohlfläche der Formeinrichtung 9 gelöst und legt sich auf den am meisten hervorstehenden Teil des Produktes 3. Damit ist die Packung vollständig erzeugt. Das Unterwerkzeug 6 wird über seinen Antrieb in die zurückgezogene untere Stellung bewegt, und anschließend wird der Schalenträger 14 in Richtung des Pfeiles 36 aus der Evakuier- und Versiegelungseinrichtung herausbewegt, so daß die fertige Packung dem Schalenträger entnehmbar ist.In the subsequent step shown in Fig. 10 takes place by switching the pneumatic drives 26 and 27, a retraction of cutting device 11 and sealing tool 10 and venting through the Evakuiereinrichtungen 24 and 30. By venting through the Evakuiereinrichtung 24 is the top film 13 is released from the hollow surface of the mold 9 and lies down on the most protruding part of the product 3. Thus, the package is completely produced. The lower tool 6 is moved by its drive in the retracted lower position, and then the tray support 14 is moved in the direction of arrow 36 from the evacuating and sealing device, so that the finished package is removed from the shell carrier.

In dem oben beschriebenen Ausführungsbeispiel ist jeweils nur eine Schale in die Versiegelungsstation eingebracht. Nach einer abgewandelten Ausführungsform ist der Schalenträger so ausgebildet, daß er eine Mehrzahl von Schalen aufnimmt und diese zum gleichzeitigen Versiegeln in die Versiegelungsstation eingebracht werden.In the embodiment described above, in each case only one shell is introduced into the sealing station. According to a modified embodiment, the tray carrier is adapted to receive a plurality of trays and insert them into the sealing station for simultaneous sealing.

Claims (8)

  1. Method for packaging a product arranged in a tray wherein a film located in a distance above the product is clamped along an edge surrounding the tray and thereafter is stretched in a direction extending away from the product and wherein subsequently the tray is raised relative to the upper film and then the edge of the tray and the upper film are sealed.
  2. Method for packaging a product arranged in a tray according to claim 1, characterized in that the space surrounding the product is evacuated before sealing.
  3. Method for packaging a product arranged in a tray according to claim 1 or 2, characterized in that the space surrounding the product is filled with a gas before sealing.
  4. Packaging machine for performing a method according to one of claims 1 to 3 comprising:
    a sealing station (4) with an internal space (8, 12) and comprising an upper tool (5) with a sealing tool (10) and a lower tool (6) which are movable relative to each other into an opened and into a closed position;
    a tray (1) which is insertable into the internal space (8, 12) in the opened position;
    a device for supplying an upper film (13) into the interior of the chamber (8, 12);
    a drive mechanism for the relative movement of the upper and the lower tool and for the sealing tool;
    a control for controlling the drive mechanism characterised in that the control is formed such that
    the chamber is closed after supply of the tray and thereby the upper film (13) is firmly clamped along an edge surrounding the edge (2) of the tray (1),
    thereafter the upper film (5) is stretched in a direction away from the product,
    then the tray (1) is raised towards the upper film (5), and
    subsequently sealing is performed.
  5. Packaging machine according to claim 4, characterized in that the control is formed such that evacuating of the space surrounding the product and, if necessary, supplying of gas into this space are performed before sealing.
  6. Packaging machine according to claim 4 or 5, with
    a device for accommodating a tray in the interior of the chamber;
    characterized in that
    the device for accommodating the tray is movable to and fro between a first position in which the tray has a maximum distance to the plane of the upper film and a second position in which the tray has a minimum distance to this plane.
  7. Packaging machine according to one of claims 4 to 6, characterized in that the upper tool comprises a forming tool with a recess facing the lower tool.
  8. Packaging machine according to claim 6 or 7, characterized in that
    a tray carrier insertable into the sealing station for sealing of a package is provided having a frame which is supported between the upper and the lower tool, when the sealing station is closed, and a carrying part;
    and in that
    the carrying part is movable to and fro for performing the variation of the distance.
EP03793653A 2002-08-14 2003-07-28 Method and packaging machine for packaging a product placed in a tray Revoked EP1521706B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10237933 2002-08-14
DE10237933A DE10237933A1 (en) 2002-08-14 2002-08-14 Packaging machine for food in trays comprises mobile upper and lower sections enclosing chamber for tray, rollers feeding film into chamber, after which it is lifted away from food and sealed to tray at its edges
PCT/EP2003/008309 WO2004022431A1 (en) 2002-08-14 2003-07-28 Method and packaging machine for packaging a product placed in a tray

Publications (2)

Publication Number Publication Date
EP1521706A1 EP1521706A1 (en) 2005-04-13
EP1521706B1 true EP1521706B1 (en) 2006-04-19

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EP03793653A Revoked EP1521706B1 (en) 2002-08-14 2003-07-28 Method and packaging machine for packaging a product placed in a tray

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US (1) US7600358B2 (en)
EP (1) EP1521706B1 (en)
JP (1) JP3950141B2 (en)
AT (1) ATE323649T1 (en)
AU (1) AU2003266251A1 (en)
CA (1) CA2495188A1 (en)
DE (2) DE10237933A1 (en)
DK (1) DK1521706T3 (en)
ES (1) ES2263059T3 (en)
NO (1) NO20051283L (en)
PL (1) PL373555A1 (en)
WO (1) WO2004022431A1 (en)

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WO2019132741A3 (en) * 2018-01-01 2020-01-02 ليث عبدالله، Machine and method for preparing and dispensing fresh and healthy food produce
CN111615489A (en) * 2018-01-01 2020-09-01 赖斯·阿卜杜拉 Machine and method for preparing and dispensing healthy fresh products
CN111615489B (en) * 2018-01-01 2022-08-09 赖斯·阿卜杜拉 Machine and method for preparing and dispensing healthy fresh products

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NO20051283L (en) 2005-03-11
US7600358B2 (en) 2009-10-13
JP3950141B2 (en) 2007-07-25
ES2263059T3 (en) 2006-12-01
AU2003266251A1 (en) 2004-03-29
JP2005535535A (en) 2005-11-24
WO2004022431A1 (en) 2004-03-18
DE50303045D1 (en) 2006-05-24
CA2495188A1 (en) 2004-03-18
EP1521706A1 (en) 2005-04-13
PL373555A1 (en) 2005-09-05
DE10237933A1 (en) 2004-02-26
DK1521706T3 (en) 2006-07-10
ATE323649T1 (en) 2006-05-15
US20050257501A1 (en) 2005-11-24

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