EP1747880B1 - Device and method to apply a lining to a container - Google Patents

Device and method to apply a lining to a container Download PDF

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Publication number
EP1747880B1
EP1747880B1 EP06015041A EP06015041A EP1747880B1 EP 1747880 B1 EP1747880 B1 EP 1747880B1 EP 06015041 A EP06015041 A EP 06015041A EP 06015041 A EP06015041 A EP 06015041A EP 1747880 B1 EP1747880 B1 EP 1747880B1
Authority
EP
European Patent Office
Prior art keywords
shell
sealing
strips
edge
formable material
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.)
Not-in-force
Application number
EP06015041A
Other languages
German (de)
French (fr)
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EP1747880A1 (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
Original Assignee
Multivac Sepp Haggenmueller GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Publication of EP1747880A1 publication Critical patent/EP1747880A1/en
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Publication of EP1747880B1 publication Critical patent/EP1747880B1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D77/00Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10Container closures formed after filling
    • B65D77/20Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D25/00Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/14Linings or internal coatings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2105/00Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2120/00Construction of rigid or semi-rigid containers
    • B31B2120/40Construction of rigid or semi-rigid containers lined or internally reinforced
    • B31B2120/402Construction of rigid or semi-rigid containers lined or internally reinforced by applying a liner to already made boxes, e.g. opening or distending of the liner or the box
    • B31B2120/406Construction of rigid or semi-rigid containers lined or internally reinforced by applying a liner to already made boxes, e.g. opening or distending of the liner or the box the lining material being a plunger, a web, a sheet or a bag to be forced into the box, e.g. by using heat
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74Auxiliary operations
    • B31B50/742Coating; Impregnating; Waterproofing; Decoating
    • B31B50/743Coating or impregnating edges or corners

Definitions

  • the present invention relates to an apparatus and a method for coating packaging.
  • trays are lined with an oxygen-barrier plastic composite film and then sealed after being filled with a top film.
  • the packages are separated along the edge of the shells in a separating system of the plastic composite film and the top film and the plastic composite film ends in the finished packaging flush with the shell edge.
  • the FR 2 384 677 A1 discloses a method for producing a double-walled paper container consisting of an outer cup-shaped paper container and an inner container made of thermoplastic or synthetic resin.
  • the inner container is formed from a seamless continuous plastic film or plastic sheet, which is placed across the opening of the paper cup and pulled under the action of a negative pressure in the cavity of the paper cup.
  • protruding edges of the coating there is a risk that it will detach from the shell at individual points. If the overhanging of the edge is to be prevented by an accurate cutting, a complex exact positioning of the packaging must be carried out prior to the cutting and there is a risk that the edges of the shell will be damaged. This problem occurs in particular when a shell of a porous plastic material such as foamed polystyrene is to be used.
  • a package can be produced in which it is reliably prevented that the sheet material used for coating the shell protrudes at the edges. Furthermore, the production of packages does not require such a precise positioning even with a sensitive shell material as in the known methods, so that a more effective, faster production can take place.
  • the device according to the invention enables a fast and efficient production of the desired packaging in a few steps.
  • the packaging achieves attractive appearance and improved handling without protruding edges of the coating material. Furthermore, an undesired release of the coating from the shell in the edge region is prevented.
  • the packaging has a lower part in the form of a shell 1, which in the embodiment shown has a substantially rectangular cross section and forms a trough 10 for a product to be packaged.
  • the shell 1 has a peripheral upper edge 13, which is substantially planar, and outer side edges 14, which extend substantially vertically.
  • the trough 10 is lined with a moldable sheet-like material 3 as a coating, which rests against the inner bottom wall 11 and the inner side walls 12 of the shell 1.
  • the sheet-like material 3 also covers the circumferential upper edge 13.
  • the lateral edge 3a of the sheet-like material 3 abuts in an upper portion 14a of the outer side edges 14. Over the entire contact surface between the moldable sheet material 3 and the shell 1 they adhere to each other, wherein the adhesion is generated in the illustrated embodiment by a thermal sealing by means of heat.
  • the package has a cover part 2, which is formed by a second sheet-like material, which is sealed in the region of the peripheral upper edge 13 on the coating applied there from the moldable sheet material 3.
  • the cover part 2 has a protruding portion 2a.
  • the lid part 2 can be grasped and the seal with the moldable sheet material 3 can be released to open the package.
  • the sealing of the moldable sheet material 3 with the shell 1 on the one hand and with the cover part 2 on the other hand is formed so that the web-shaped material 3 does not detach from the shell 1 when opening the lid part 2.
  • the interior of the shell has a hermetically sealed controlled atmosphere prior to initial opening.
  • the atmosphere may be evacuated and replaced with an inert gas such as CO 2 as a replacement gas.
  • the moldable sheet material which is formed in the described embodiment by a thermoplastic resin film, from a supply roll 4 is unrolled.
  • a heating and forming station 6 In the working direction of the packaging machine (from right to left in Fig. 7) behind the feeder 5, a heating and forming station 6 is provided, in which the moldable sheet material 3 is formed in the wells 10 of the shells 1.
  • the heating and forming station 6 is formed as a thermoforming station, in which the trays 1 are lined by deep drawing with the moldable sheet material 3.
  • the moldable sheet material 3 is first heated and then formed by a pressure difference generated in the wells 10 of the shells 1. After this station, the trays 1 are connected to the moldable sheet material 3.
  • the trays 1 are made of a porous foamed plastics material such as e.g. made of foamed polystyrene and are themselves gas permeable, so they can serve directly as a mold for the deep drawing process.
  • the trays 1 are transported with the already coated troughs 10 together with the feed of the moldable sheet material 3 in a cutting and edge sealing station 7.
  • the coated shells 1 from the moldable web-shaped material 3 separated and laterally over a shell protruding side edge 3a of the sheet-like material 3 is sealed to the upper portion 14a of the side edges 14 of the respective shell 1.
  • a winding device 8 is provided, in which a remaining skeleton 3 'of the moldable sheet material 3 is wound up after the peeling of the coated shells. Behind the winding device 8, a discharge device 9 is provided for the coated shells produced.
  • FIGS. 3 to 5 each show a schematic sectional view of the cutting and edge sealing station 7 transversely to the transport direction.
  • the packaging machine shown is designed for the simultaneous processing of two shells 1 perpendicular to the transport direction.
  • the cutting and edge sealing station 7 consists of a cutting device 20 and a edge sealing device 30.
  • the cutting device 20 has a frame 21, are fixed to the cutting blade 22, which are arranged in the illustrated embodiment, in the first position shown in Fig. 3 below the path of the sheet material 3.
  • the frame 21 is attached to a lifting device 23, the frame 21 with the cutting blades 22 of the in Fig. 3rd shown first position in the second position shown in Figs. 4 and 5 can move.
  • the lifting device 23 is realized by a piston-cylinder arrangement.
  • the cutting blades 22 are arranged so that they run around when introduced into the cutting and Randsiegelstation 7 shell 1 around outside of the outer contour on the opposite side of the web of the sheet-like material 3.
  • the edge sealing device 30 has a sealing tool 31, which is connected to a lifting device 32.
  • the sealing tool 31 is formed by two sealing tools 31a and 31b provided for two packages to be processed in parallel but identical in construction. Also shown are two lifting devices 32a and 32b in the form of piston-cylinder arrangements, which, however, may also be designed as a single lifting device 32. For the sake of simplicity, only one sealing tool 31 and one lifting device 32 will be described in the following.
  • the lifting device 32 is designed such that it can move the sealing tool 31 from the first position shown in FIGS. 3 and 4 into the second position shown in FIG. 5. In the first position shown in FIGS. 3 and 4, the sealing tool 31 is located below the plane spanned by the web-shaped material 3.
  • the sealing tool 31 is designed to be heatable and has a circumferential projecting edge 33.
  • the circumferential projecting edge 33 is adapted to the outer contour of the shells 1 and arranged so that in the second position when inserted into the cutting and Randsiegelstation 7 shell 1 surrounds its outer contour all around along an upper portion 14 a of the outer side edge 14 and the web-shaped material 3 presses against the upper portion 14a.
  • the circumferential projecting edge has an inner wall 34 extending substantially parallel to the direction of movement of the edge seal 30 from the first position to the second position. It can also be seen that the circumferential projecting edge 33 on the side of the inner wall 34 has a tapered surface 35 towards its free end.
  • the trays 1, which are already lined with the formable sheet-like material 3, are held between an upper abutment 40 and a lower abutment 41 in a tray receiving position.
  • the upper abutment 40 is fixed to an upper frame 42 of the cutting and edge sealing station 7, and the lower abutment 41 is fixed to a lower frame 43 of the cutting and edge sealing station 7.
  • This extension plane E extends perpendicular to the direction of movement of the edge-sealing station from the first position to the second position.
  • the upper frame 42 can be moved with the anvil 40 in the direction of the arrow 44 from the closed position shown in FIGS. 3 to 6 into an open position in which the trays 1 are inserted into the cutting and edge sealing station 7 and out of this can be removed.
  • the trays 1 are unstacked from the feed device 5 to the unrolled from the supply roll 4 formable sheet material 3. Subsequently, the moldable sheet-like material 3 is formed in the heating and forming station 6 in the wells 10 of the shells 1, wherein this operation is clocked in a main machine cycle. Subsequently, those with the malleable sheet-like Material 3 clothed trays 1 transported in the machine cycle in the cutting and edge sealing station 7.
  • the cutting device 20 is moved by the lifting device 23 from the first position shown in Fig. 3 in the second position shown in Fig. 4, whereby the path of the moldable sheet material 3 each outside the outer contour of a shell 1 around by the cutting blade 22nd is severed, so that a lateral edge 3a of the sheet-like material 3 outside the peripheral upper edge 13 of each shell 1 is formed.
  • the sealing tool 31 of the edge sealing device 30 is moved by means of the lifting device 32 from the first position shown in FIG. 4 into the second position shown in FIG. 5.
  • the lateral edge 3a of the moldable sheet material 3 is pressed by the circumferential projecting edge 33 of the sealing tool 31 along the entire contour of the peripheral upper edge 13 of the shell 1 in an upper portion 14a against the outer side edge 14 of the shell 1, as Best seen in the enlarged detail view in Fig. 6.
  • the encircling projecting edge 33 of the sealing tool 31 is heated and there is a thermal sealing of the lateral edge 3a of the moldable sheet material 3 to the outer side edge 14 of the shell 1.
  • the peripheral projecting edge 33 presses the lateral edge 3a of the sheet material. 3 against the upper portion 14a.
  • the circumferential projecting edge 33 is therefore in contact with the upper section 14a via the formable sheet-like material 3.
  • the inner wall 34 of the peripheral projecting edge 33 ensures that the lateral edge 3a of the web-shaped Material 3 is reliably pressed against the outer side edge 14 of the shell 1.
  • the beveled surface 35 allows easy passing over the peripheral edge 13 of the shell 1 by the circumferential projecting edge 33, even if the shell 1 is not optimally located in the tray receiving position A.
  • the cutting and edge sealing station 7 thus has three lifting devices, for opening and closing the entire station, for the movement of the cutting device 20 and for the movement of the edge sealer 30. These may e.g. all be realized via piston-cylinder devices.
  • the packaging thus produced can then be filled in a filling station, not shown, with the goods to be packaged and then sealed in a sealing station, also not shown with a second web-shaped material along the peripheral upper edge 13. It may also be provided an Evakuier thanks in which the atmosphere in the package is evacuated and replaced by a replacement gas. In particular, an exchange by a protective gas, such as CO 2 , in question, which prevents aging of the packaged goods or delayed.
  • a protective gas such as CO 2
  • the trays 1 and the formable sheet material 3 are transported from one workstation to the next in a clockwise cycle in a main machine cycle, and the edge is cut and sealed in the cutting and edge sealing station 7 in one clock cycle.
  • the trays 1 are processed with the trough 10 directed downwards and the cutting knives 22 and the tucking tool 31 are located below the path of the formable sheet material 3, the reverse arrangement is also possible.
  • sealing of the overhanging edge 3a of the moldable sheet material by heat is described, however, another form of sealing is possible, such as e.g. a sticking.
  • the packaging is not limited to the form described, there are many different packaging forms depending on the product to be packaged conceivable. Also, the package is not limited to the foamed polystyrene described in the above embodiment, but various materials that require such a coating are conceivable.
  • the cutting device 20 and the edge sealing device 30 are integrated in a cutting and edge sealing station 7, but it is also a separate training possible. Then, however, the packages must be re-grasped after cutting and before sealing the edge, and processing in the cutter 20 and in the edge sealer 30 occurs in mutually different clock cycles.

Description

Die vorliegende Erfindung betrifft eine Vorrichtung und ein Verfahren zum Beschichten von Verpackungen.The present invention relates to an apparatus and a method for coating packaging.

In der Technik ist es bekannt, Waren in Verpackungen einzufüllen und diese anschließend z.B. durch Aufsiegeln einer Folie luftdicht zu verschließen. Vielfach werden zu Verpackungszwecken in eine Folienbahn Mulden geformt und diese nach dem Befüllen mit dem zu verpackenden Gut mit einer zweiten Folie verschlossen und anschließend die fertigen Verpackungen aus der Folienbahn herausgetrennt.It is known in the art to load goods into packages and then to pack them e.g. to seal airtight by sealing a film. In many cases, for packaging purposes, molds are formed in a film web and, after being filled with the product to be packaged, they are closed with a second film and then the finished packaging is cut out of the film web.

Für spezielle Anwendungen ist es gewünscht, z.B. um eine bessere Isolierung zu gewährleisten, Verpackungen bereitzustellen die als das zu verpackende Gut aufnehmendes Verpackungsunterteil eine Schale aus einem anderen Material aufweisen, z.B. aus einem porösen Kunststoffmaterial. Solche Materialien weisen jedoch oftmals den Nachteil auf, dass sie nicht das gewünschte neutrale Verhalten gegenüber dem zu verpackenden Gut aufweisen und/oder nicht so gas- oder flüssigkeitsdicht sind, wie es erforderlich ist. Bei derartigen Verpackungen ist es bekannt, die Schale mit einem Material zu beschichten, das die gewünschten Eigenschaften aufweist, wobei die Beschichtung z.B. mit einem thermoplastischen Kunststofffilm erfolgt, mit dem die Schale ausgekleidet wird.For special applications, it is desired, for example to ensure better insulation, to provide packages which have a shell of another material as the packaging material to be packaged, for example of a porous plastic material. However, such materials often have the disadvantage that they do not have the desired neutral behavior with respect to the product to be packaged and / or are not as gas or liquid-tight as is necessary. In such packaging, it is known that To coat shell with a material having the desired properties, wherein the coating is carried out, for example with a thermoplastic plastic film, with which the shell is lined.

In der DE 196 54 230 A1 ist offenbart, dass Schalen mit einer sauerstoffsperrenden Kunststoff-Verbundfolie ausgekleidet werden und anschließend nach einem Befüllen mit einer Oberfolie versiegelt werden. Die Packungen werden entlang dem Rand der Schalen in einer Vereinzelungsanlage aus der Kunststoffverbundfolie und der Oberfolie herausgetrennt und die Kunststoff-Verbundfolie endet bei den fertigen Verpackungen bündig mit dem Schalenrand.In the DE 196 54 230 A1 It is disclosed that trays are lined with an oxygen-barrier plastic composite film and then sealed after being filled with a top film. The packages are separated along the edge of the shells in a separating system of the plastic composite film and the top film and the plastic composite film ends in the finished packaging flush with the shell edge.

Die FR 2 384 677 A1 offenbart ein Verfahren zur Herstellung eines doppelwandigen Papierbehälters, der aus einem äußeren becherförmigen Papierbehälter und einem inneren aus thermoplastischem Kunststoff oder Kunstharz bestehenden Behälter besteht. Der innere Behälter wird aus einer nahtlosen durchgehenden Kunststofffolie oder Kunststofftafel ausgeformt, die quer über die Öffnung des Papierbechers gelegt und unter Einwirkung eines Unterdrucks in den Hohlraum des Papierbechers gezogen wird.The FR 2 384 677 A1 discloses a method for producing a double-walled paper container consisting of an outer cup-shaped paper container and an inner container made of thermoplastic or synthetic resin. The inner container is formed from a seamless continuous plastic film or plastic sheet, which is placed across the opening of the paper cup and pulled under the action of a negative pressure in the cavity of the paper cup.

Aus der DE 198 28 381 A1 ist ein Verfahren bekannt, bei dem einzelne Schalen mit einer hermetisch dichten Folie ausgekleidet und dann zu Verpackungen verarbeitet werden. Auch bei dem offenbarten Verfahren werden die Schalen zusammen mit der zur Beschichtung verwendeten Folie entlang der Ränder der Schalen aus dem Bahnmaterial der hermetisch dichten Folie herausgetrennt.From the DE 198 28 381 A1 For example, a process is known in which individual trays are lined with a hermetically sealed film and then processed into packages. Also in the disclosed method, the trays, along with the film used for coating, are separated along the edges of the trays from the sheet material of the hermetically sealed film.

Nachteilig ist bei den bekannten Verpackungen, dass ein passgenaues Schneiden der Beschichtung an den Außenkanten der Schalen erfolgen muss oder die Beschichtungsfolie seitlich etwas von dem Rand der Schale absteht, was zu scharfen Kanten führt und den Ansprüchen an eine qualitativ hochwertige Verpackung nicht gerecht wird. Außerdem besteht bei überstehenden Kanten der Beschichtung die Gefahr, dass sich diese von der Schale an einzelnen Stellen löst. Wenn das Überstehen der Kante durch ein passgenaues Schneiden verhindert werden soll, so muss eine aufwendige exakte Positionierung der Verpackungen vor dem Schneiden erfolgen und es besteht die Gefahr, dass die Ränder der Schale beschädigt werden. Dieses Problem tritt insbesondere dann auf, wenn eine Schale aus einem porösen Kunststoffmaterial wie z.B. geschäumtem Polystyrol verwendet werden soll.A disadvantage of the known packaging that a precise cutting of the coating must be done on the outer edges of the shells or the coating film laterally protrudes slightly from the edge of the shell, resulting in sharp edges and the demands of a high quality packaging is not fair. In addition, with protruding edges of the coating there is a risk that it will detach from the shell at individual points. If the overhanging of the edge is to be prevented by an accurate cutting, a complex exact positioning of the packaging must be carried out prior to the cutting and there is a risk that the edges of the shell will be damaged. This problem occurs in particular when a shell of a porous plastic material such as foamed polystyrene is to be used.

Es ist Aufgabe der Erfindung, ein Verfahren, mit dem eine verbesserte Verpackung effizient hergestellt werden kann, und eine Vorrichtung, die eine verbesserte Verpackung erzeugen kann, bereitzustellen.It is an object of the invention to provide a method by which improved packaging can be produced efficiently and an apparatus that can produce improved packaging.

Die Aufgabe wird durch ein Verfahren gemäß Anspruch 1 sowie durch eine Vorrichtung gemäß Anspruch 10 gelöst. Weiterbildungen der Erfindung sind jeweils in den Unteransprüchen bezeichnet.The object is achieved by a method according to claim 1 and by a device according to claim 10. Further developments of the invention are each referred to in the subclaims.

Mit dem erfindungsgemäßen Verfahren kann eine Verpackung erzeugt werden, bei der zuverlässig verhindert ist, dass das zur Beschichtung der Schale verwendete bahnförmige Material an den Kanten übersteht. Ferner erfordert das Erzeugen von Verpackungen auch bei einem empfindlichen Schalenmaterial keine derart genaue Positionierung wie bei den bekannten Verfahren, sodass eine effektivere, schnellere Produktion erfolgen kann.With the method according to the invention, a package can be produced in which it is reliably prevented that the sheet material used for coating the shell protrudes at the edges. Furthermore, the production of packages does not require such a precise positioning even with a sensitive shell material as in the known methods, so that a more effective, faster production can take place.

Die erfindungsgemäße Vorrichtung ermöglicht ein schnelles und effizientes Erzeugen der gewünschten Verpackungen in wenigen Arbeitsschritten.The device according to the invention enables a fast and efficient production of the desired packaging in a few steps.

Bei der Verpackung sind eine ansprechende Optik und eine verbesserte Handhabung ohne hervorstehende Kanten des Beschichtungsmaterials erzielt. Ferner ist ein unerwünschtes Lösen der Beschichtung von der Schale im Randbereich verhindert.The packaging achieves attractive appearance and improved handling without protruding edges of the coating material. Furthermore, an undesired release of the coating from the shell in the edge region is prevented.

Weitere Merkmale und Zweckmäßigkeiten der Erfindung ergeben sich aus der Beschreibung von Ausführungsbeispielen anhand der beigefügten Zeichnungen. Von den Figuren zeigen:

Fig. 1
eine perspektivische Ansicht einer Verpackung gemäß einer Ausführungsform mit teilweise weggelassenem Deckelteil;
Fig. 2
eine seitliche Schnittansicht der Verpackung aus Fig. 1;
Fig. 3
eine schematische Schnittansicht einer Arbeitsstation in der eine thermische Andrückeinrichtung und eine Schneideeinrichtung integriert sind mit der thermischen Andrückeinrichtung in einer ersten Position und der Schneideeinrichtung in einer ersten Stellung;
Fig. 4
eine schematische Schnittansicht der Arbeitsstation aus Fig. 3 mit der Schneideeinrichtung in einer zweiten Stellung;
Fig. 5
eine schematische Schnittansicht der Arbeitsstation aus Fig. 4 mit der thermischen Andrückvorrichtung in einer zweiten Position;
Fig. 6
eine vergrößerte Detailansicht des mit einem Kreis gekennzeichneten Ausschnitts von Fig. 5; und
Fig. 7
eine schematische Seitenansicht einer Verpackungsmaschine.
Further features and advantages of the invention will become apparent from the description of embodiments with reference to the accompanying drawings. From the figures show:
Fig. 1
a perspective view of a package according to an embodiment with partially omitted cover part;
Fig. 2
a side sectional view of the package of Fig. 1;
Fig. 3
a schematic sectional view of a workstation in which a thermal pressure device and a cutting device are integrated with the thermal pressure device in a first position and the cutting device in a first position;
Fig. 4
a schematic sectional view of the workstation of Figure 3 with the cutting device in a second position.
Fig. 5
a schematic sectional view of the workstation of Figure 4 with the thermal presser in a second position.
Fig. 6
an enlarged detail of the marked with a circle section of Fig. 5; and
Fig. 7
a schematic side view of a packaging machine.

Im Folgenden wird mit Bezug auf die Fig. 1 und 2 eine Ausführungsform einer Verpackung beschrieben.Hereinafter, an embodiment of a package will be described with reference to Figs.

Wie in den Fig. 1 und 2 zu sehen ist, weist die Verpackung ein Unterteil in Form einer Schale 1 auf, die in der gezeigten Ausführungsform im Wesentlichen einen rechteckigen Querschnitt aufweist und eine Mulde 10 für ein zu verpackendes Gut bildet. Die Schale 1 weist einen umlaufenden oberen Rand 13 auf, der im Wesentlichen eben ist, sowie äußere Seitenränder 14, die im Wesentlichen vertikal verlaufen.As can be seen in FIGS. 1 and 2, the packaging has a lower part in the form of a shell 1, which in the embodiment shown has a substantially rectangular cross section and forms a trough 10 for a product to be packaged. The shell 1 has a peripheral upper edge 13, which is substantially planar, and outer side edges 14, which extend substantially vertically.

Die Mulde 10 ist mit einem formbaren bahnförmigen Material 3 als Beschichtung ausgekleidet, das an der inneren Bodenwand 11 sowie den inneren Seitenwänden 12 der Schale 1 anliegt. Das bahnförmige Material 3 bedeckt auch den umlaufenden oberen Rand 13. Der seitliche Rand 3a des bahnförmigen Materials 3 liegt in einem oberen Abschnitt 14a der äußeren Seitenränder 14 an. Über die gesamte Kontaktfläche zwischen dem formbaren bahnförmigen Material 3 und der Schale 1 haften diese aneinander, wobei die Haftung bei der dargestellten Ausführungsform durch ein thermisches Versiegeln mittels Wärmeeinwirkung erzeugt ist.The trough 10 is lined with a moldable sheet-like material 3 as a coating, which rests against the inner bottom wall 11 and the inner side walls 12 of the shell 1. The sheet-like material 3 also covers the circumferential upper edge 13. The lateral edge 3a of the sheet-like material 3 abuts in an upper portion 14a of the outer side edges 14. Over the entire contact surface between the moldable sheet material 3 and the shell 1 they adhere to each other, wherein the adhesion is generated in the illustrated embodiment by a thermal sealing by means of heat.

Ferner weist die Verpackung ein Deckelteil 2 auf, das durch ein zweites bahnförmiges Material gebildet ist, das im Bereich des umlaufenden oberen Randes 13 auf die dort aufgebrachte Beschichtung aus dem formbaren bahnförmigen Material 3 aufgesiegelt ist. Im Bereich einer Ecke 15 der Schale 1 weist das Deckelteil 2 einen überstehenden Abschnitt 2a auf. An dem überstehenden Abschnitt 2a kann das Deckelteil 2 ergriffen werden und zum Öffnen der Verpackung die Versiegelung mit dem formbaren bahnförmigen Material 3 gelöst werden. Die Versiegelung des formbaren bahnförmigen Materials 3 mit der Schale 1 einerseits und mit dem Deckelteil 2 andererseits ist so ausgebildet, dass sich das bahnförmige Material 3 beim Öffnen des Deckelteils 2 nicht von der Schale 1 löst.Furthermore, the package has a cover part 2, which is formed by a second sheet-like material, which is sealed in the region of the peripheral upper edge 13 on the coating applied there from the moldable sheet material 3. In the area of a corner 15 of the shell 1, the cover part 2 has a protruding portion 2a. At the protruding portion 2a, the lid part 2 can be grasped and the seal with the moldable sheet material 3 can be released to open the package. The sealing of the moldable sheet material 3 with the shell 1 on the one hand and with the cover part 2 on the other hand is formed so that the web-shaped material 3 does not detach from the shell 1 when opening the lid part 2.

Das Innere der Schale weist vor dem ersten Öffnen eine hermetisch abgeschlossene kontrollierte Atmosphäre auf. Dabei kann die Atmosphäre zum Beispiel evakuiert und durch ein Schutzgas, wie z.B. CO2, als Austauschgas ersetzt sein.The interior of the shell has a hermetically sealed controlled atmosphere prior to initial opening. It can For example, the atmosphere may be evacuated and replaced with an inert gas such as CO 2 as a replacement gas.

Als nächstes wird anhand von Fig. 7 eine Ausführungsform einer Verpackungsmaschine beschrieben.Next, an embodiment of a packaging machine will be described with reference to FIG.

Wie in Fig. 7 zu sehen ist, wird das formbare bahnförmige Material, das in der beschriebenen Ausführungsform durch eine thermoplastische Kunststofffolie gebildet ist, von einer Vorratsrolle 4 abgerollt. Es ist eine Zuführeinrichtung 5 für Schalen 1 vorgesehen, in der die Schalen 1 auf das formbare bahnförmige Material 3 entstapelt werden.As can be seen in Fig. 7, the moldable sheet material, which is formed in the described embodiment by a thermoplastic resin film, from a supply roll 4 is unrolled. There is provided a feeding device 5 for trays 1, in which the trays 1 are unstacked onto the formable sheet-like material 3.

In der Arbeitsrichtung der Verpackungsmaschine (von rechts nach links in Fig. 7) hinter der Zuführeinrichtung 5 ist eine Heiz- und Formstation 6 vorgesehen, in der das formbare bahnförmige Material 3 in die Mulden 10 der Schalen 1 geformt wird. In der beschriebenen Ausführungsform ist die Heiz- und Formstation 6 als eine Tiefziehstation ausgebildet, in der die Schalen 1 durch Tiefziehen mit dem formbaren bahnförmigen Material 3 ausgekleidet werden. Dabei wird das formbare bahnförmige Material 3 zunächst erwärmt und anschließen durch eine erzeugte Druckdifferenz in die Mulden 10 der Schalen 1 geformt. Nach dieser Station sind die Schalen 1 mit dem formbaren bahnförmigen Material 3 verbunden. In der beschriebenen Ausführungsform sind die Schalen 1 aus einem porösen geschäumten Kunststoffmaterial wie z.B. geschäumten Polystyrol gefertigt und sind selbst gasdurchlässig, sodass sie direkt als Form für das Tiefziehverfahren dienen können.In the working direction of the packaging machine (from right to left in Fig. 7) behind the feeder 5, a heating and forming station 6 is provided, in which the moldable sheet material 3 is formed in the wells 10 of the shells 1. In the described embodiment, the heating and forming station 6 is formed as a thermoforming station, in which the trays 1 are lined by deep drawing with the moldable sheet material 3. The moldable sheet material 3 is first heated and then formed by a pressure difference generated in the wells 10 of the shells 1. After this station, the trays 1 are connected to the moldable sheet material 3. In the described embodiment, the trays 1 are made of a porous foamed plastics material such as e.g. made of foamed polystyrene and are themselves gas permeable, so they can serve directly as a mold for the deep drawing process.

Nach der Heiz- und Formstation 6 werden die Schalen 1 mit den bereits beschichteten Mulden 10 zusammen mit dem Vorschub des formbaren bahnförmigen Materials 3 in eine Schneide- und Randsiegelstation 7 transportiert. In der Schneide- und Randsiegelstation 7 werden die beschichteten Schalen 1 aus dem formbaren bahnförmigen Material 3 ausgetrennt und der seitlich über eine Schale hervorstehende seitliche Rand 3a aus dem bahnförmigen Material 3 wird an den oberen Abschnitt 14a der Seitenränder 14 der jeweiligen Schale 1 angesiegelt.After the heating and forming station 6, the trays 1 are transported with the already coated troughs 10 together with the feed of the moldable sheet material 3 in a cutting and edge sealing station 7. In the cutting and edge sealing station 7, the coated shells 1 from the moldable web-shaped material 3 separated and laterally over a shell protruding side edge 3a of the sheet-like material 3 is sealed to the upper portion 14a of the side edges 14 of the respective shell 1.

In Transportrichtung hinter der Schneide- und Randsiegelstation 7 ist eine Aufwickelvorrichtung 8 vorgesehen, in der ein verbleibendes Restgitter 3' des formbaren bahnförmigen Materials 3 nach dem Austrennen der beschichteten Schalen aufgewickelt wird. Hinter der Aufwickelvorrichtung 8 ist eine Abführvorrichtung 9 für die erzeugten beschichteten Schalen bereitgestellt.In the transport direction behind the cutting and edge sealing station 7, a winding device 8 is provided, in which a remaining skeleton 3 'of the moldable sheet material 3 is wound up after the peeling of the coated shells. Behind the winding device 8, a discharge device 9 is provided for the coated shells produced.

Im Folgenden wird anhand der Fig. 3 bis 6 die Arbeitsweise der Schneide- und Randsiegelstation 7 beschrieben.In the following, the operation of the cutting and edge sealing station 7 will be described with reference to FIGS.

Die Fig. 3 bis 5 zeigen jeweils eine schematische Schnittansicht der Schneide- und Randsiegelstation 7 quer zur Transportrichtung. Wie in den Fig. 3 bis 5 zu sehen ist, ist die dargestellte Verpackungsmaschine zur gleichzeitigen Bearbeitung von zwei Schalen 1 senkrecht zur Transportrichtung ausgebildet. Es ist jedoch ebenfalls möglich, mehr Schalen oder nur eine Schale senkrecht zur Transportrichtung anzuordnen und die Schneide- und Randsiegelstation 7 entsprechend auszubilden.3 to 5 each show a schematic sectional view of the cutting and edge sealing station 7 transversely to the transport direction. As can be seen in FIGS. 3 to 5, the packaging machine shown is designed for the simultaneous processing of two shells 1 perpendicular to the transport direction. However, it is also possible to arrange more shells or only one shell perpendicular to the transport direction and form the cutting and edge sealing station 7 accordingly.

Wie in Fig. 3 zu sehen ist, besteht die Schneide- und Randsiegelstation 7 aus einer Schneideeinrichtung 20 und einer Randsiegeleinrichtung 30.As can be seen in FIG. 3, the cutting and edge sealing station 7 consists of a cutting device 20 and a edge sealing device 30.

Die Schneideeinrichtung 20 weist einen Rahmen 21 auf, an dem Schneidmesser 22 befestigt sind, die bei der dargestellten Ausführungsform in der in Fig. 3 gezeigten ersten Stellung unterhalb der Bahn des bahnförmigen Materials 3 angeordnet sind. Der Rahmen 21 ist an einer Hubvorrichtung 23 befestigt, die den Rahmen 21 mit den Schneidmessern 22 von der in Fig. 3 gezeigten ersten Stellung in die in den Fig. 4 und 5 gezeigte zweite Stellung bewegen kann. Bei der dargestellten Ausführungsform ist die Hubvorrichtung 23 durch eine Kolben-ZylinderAnordnung realisiert. Die Schneidmesser 22 sind dabei so angeordnet, dass sie bei in die Schneide- und Randsiegelstation 7 eingebrachter Schale 1 ringsum außerhalb von deren äußerer Kontur auf der gegenüberliegenden Seite der Bahn des bahnförmigen Materials 3 verlaufen.The cutting device 20 has a frame 21, are fixed to the cutting blade 22, which are arranged in the illustrated embodiment, in the first position shown in Fig. 3 below the path of the sheet material 3. The frame 21 is attached to a lifting device 23, the frame 21 with the cutting blades 22 of the in Fig. 3rd shown first position in the second position shown in Figs. 4 and 5 can move. In the illustrated embodiment, the lifting device 23 is realized by a piston-cylinder arrangement. The cutting blades 22 are arranged so that they run around when introduced into the cutting and Randsiegelstation 7 shell 1 around outside of the outer contour on the opposite side of the web of the sheet-like material 3.

Die Randsiegeleinrichtung 30 weist ein Ansiegelwerkzeug 31 auf, das mit einer Hubvorrichtung 32 verbunden ist. Bei der dargestellten Ausführungsform ist das Ansiegelwerkzeug 31 durch zwei Ansiegelwerkzeuge 31a und 31b gebildet, die für zwei parallel zu verarbeitende Verpackungen vorgesehen sind, jedoch in ihrer Konstruktion identisch sind. Ebenfalls sind zwei Hubvorrichtungen 32a und 32b in Form von Kolben-Zylinder-Anordnungen dargestellt, die jedoch auch als eine einzige Hubvorrichtung 32 ausgebildet sein können. Der Einfachheit halber werden im Folgenden immer nur ein Ansiegelwerkzeug 31 und eine Hubvorrichtung 32 beschrieben. Die Hubvorrichtung 32 ist so ausgebildet, dass sie das Ansiegelwerkzeug 31 aus der in den Fig. 3 und 4 gezeigten ersten Position in die in Fig. 5 gezeigte zweite Position bewegen kann. In der in den Fig. 3 und 4 gezeigten ersten Position befindet sich das Ansiegelwerkzeug 31 unterhalb der durch das bahnförmige Material 3 aufgespannten Ebene. Das Ansiegelwerkzeug 31 ist beheizbar ausgebildet und weist einen umlaufenden vorspringenden Rand 33 auf. Der umlaufende vorspringende Rand 33 ist an die äußere Kontur der Schalen 1 angepasst und so angeordnet, dass er in der zweiten Position bei in die Schneide- und Randsiegelstation 7 eingebrachter Schale 1 deren äußere Kontur ringsum entlang eines oberen Abschnitts 14a des äußeren Seitenrandes 14 umgreift und das bahnförmige Material 3 gegen den oberen Abschnitt 14a drückt.The edge sealing device 30 has a sealing tool 31, which is connected to a lifting device 32. In the illustrated embodiment, the sealing tool 31 is formed by two sealing tools 31a and 31b provided for two packages to be processed in parallel but identical in construction. Also shown are two lifting devices 32a and 32b in the form of piston-cylinder arrangements, which, however, may also be designed as a single lifting device 32. For the sake of simplicity, only one sealing tool 31 and one lifting device 32 will be described in the following. The lifting device 32 is designed such that it can move the sealing tool 31 from the first position shown in FIGS. 3 and 4 into the second position shown in FIG. 5. In the first position shown in FIGS. 3 and 4, the sealing tool 31 is located below the plane spanned by the web-shaped material 3. The sealing tool 31 is designed to be heatable and has a circumferential projecting edge 33. The circumferential projecting edge 33 is adapted to the outer contour of the shells 1 and arranged so that in the second position when inserted into the cutting and Randsiegelstation 7 shell 1 surrounds its outer contour all around along an upper portion 14 a of the outer side edge 14 and the web-shaped material 3 presses against the upper portion 14a.

Der umlaufende vorspringende Rand weist, wie in Fig. 6 zu sehen ist, eine Innenwand 34 auf, die sich im Wesentlichen parallel zu der Bewegungsrichtung der Randsiegeleinrichtung 30 von der ersten Position zu der zweiten Position erstreckt. Ferner ist zu sehen, dass der umlaufende vorspringende Rand 33 auf der Seite der Innenwand 34 zu seinem freien Ende hin eine abgeschrägte Fläche 35 aufweist.As shown in FIG. 6, the circumferential projecting edge has an inner wall 34 extending substantially parallel to the direction of movement of the edge seal 30 from the first position to the second position. It can also be seen that the circumferential projecting edge 33 on the side of the inner wall 34 has a tapered surface 35 towards its free end.

In der Schneide- und Randsiegelstation 7 sind die bereits mit dem formbaren bahnförmigen Material 3 ausgekleideten Schalen 1 zwischen einem oberen Gegenlager 40 und einem unteren Gegenlager 41 in einer Schalenaufnahmeposition gehalten. Das obere Gegenlager 40 ist an einem oberen Rahmen 42 der Schneide- und Randsiegelstation 7 befestigt und das untere Gegenlager 41 ist an einem unteren Rahmen 43 der Schneide- und Randsiegelstation 7 befestigt. Zwischen dem oberen Rahmen 42 und dem unteren Rahmen 43 ist eine Erstreckungsebene E für das unverformte bahnförmige Material 3 gebildet, die sich parallel zu der Transportebene des bahnförmigen Materials erstreckt. Diese Erstreckungsebene E erstreckt sich senkrecht zu der Bewegungsrichtung der Randsiegelstation von der ersten Position in die zweite Position. Der obere Rahmen 42 kann mit dem Gegenlager 40 in der Richtung des Pfeils 44 aus der in den Fig. 3 bis 6 dargestellten geschlossenen Position in eine geöffnete Position bewegt werden, in der die Schalen 1 in die Schneide- und Randsiegelstation 7 eingebracht und aus dieser entfernt werden können.In the cutting and edge sealing station 7, the trays 1, which are already lined with the formable sheet-like material 3, are held between an upper abutment 40 and a lower abutment 41 in a tray receiving position. The upper abutment 40 is fixed to an upper frame 42 of the cutting and edge sealing station 7, and the lower abutment 41 is fixed to a lower frame 43 of the cutting and edge sealing station 7. Between the upper frame 42 and the lower frame 43 there is formed an extension plane E for the undeformed sheet material 3 which extends parallel to the transport plane of the sheet material. This extension plane E extends perpendicular to the direction of movement of the edge-sealing station from the first position to the second position. The upper frame 42 can be moved with the anvil 40 in the direction of the arrow 44 from the closed position shown in FIGS. 3 to 6 into an open position in which the trays 1 are inserted into the cutting and edge sealing station 7 and out of this can be removed.

Im Betrieb der Verpackungsmaschine werden die Schalen 1 erst von der Zuführeinrichtung 5 auf das von der Vorratsrolle 4 abgerollte formbare bahnförmige Material 3 entstapelt. Anschließend wird das formbare bahnförmige Material 3 in der Heiz- und Formstation 6 in die Mulden 10 der Schalen 1 geformt, wobei dieser Betrieb in einem Hauptmaschinentakt getaktet erfolgt. Anschließend werden die mit dem formbaren bahnförmigen Material 3 bekleideten Schalen 1 im Maschinentakt in die Schneide- und Randsiegelstation 7 transportiert.During operation of the packaging machine, the trays 1 are unstacked from the feed device 5 to the unrolled from the supply roll 4 formable sheet material 3. Subsequently, the moldable sheet-like material 3 is formed in the heating and forming station 6 in the wells 10 of the shells 1, wherein this operation is clocked in a main machine cycle. Subsequently, those with the malleable sheet-like Material 3 clothed trays 1 transported in the machine cycle in the cutting and edge sealing station 7.

Nach dem Einbringen der mit dem formbaren bahnförmigen Material 3 ausgekleideten Schalen 1 in die Schneide- und Randsiegelstation 7 sind diese zwischen dem oberen Gegenlager 40 und dem unteren Gegenlager 41 gehalten, wie in Fig. 3 dargestellt ist. Dann wird die Schneideeinrichtung 20 durch die Hubvorrichtung 23 aus der in Fig. 3 gezeigten ersten Stellung in die in Fig. 4 gezeigte zweite Stellung bewegt, wodurch die Bahn des formbaren bahnförmigen Materials 3 jeweils außerhalb der äußeren Kontur einer Schale 1 ringsum durch die Schneidmesser 22 durchtrennt wird, sodass ein seitlicher Rand 3a des bahnförmigen Materials 3 außerhalb des umlaufenden oberen Randes 13 jeder Schale 1 gebildet wird. Anschließend wird das Ansiegelwerkzeug 31 der Randsiegeleinrichtung 30 mittels der Hubvorrichtung 32 aus der in Fig. 4 gezeigten ersten Position in die in Fig. 5 gezeigte zweite Position bewegt. Durch diese Bewegung wird der seitliche Rand 3a des formbaren bahnförmigen Materials 3 durch den umlaufenden vorspringenden Rand 33 des Ansiegelwerkzeugs 31 entlang der gesamten Kontur des umlaufenden oberen Randes 13 der Schale 1 in einem oberen Abschnitt 14a gegen den äußeren Seitenrand 14 der Schale 1 gedrückt, wie am besten in der vergrößerten Detailansicht in Fig. 6 zu sehen ist. Dabei wird der umlaufende vorspringende Rand 33 des Ansiegelwerkzeugs 31 beheizt und es erfolgt ein thermisches Ansiegeln des seitlichen Randes 3a des formbaren bahnförmigen Materials 3 an den äußeren Seitenrand 14 der Schale 1. Dabei drückt der umlaufende vorspringende Rand 33 den seitlichen Rand 3a des bahnförmigen Materials 3 gegen den oberen Abschnitt 14a. Der umlaufende vorspringende Rand 33 steht also über das formbare bahnförmige Material 3 mit dem oberen Abschnitt 14a in Kontakt.After introduction of the lined with the moldable sheet material 3 shells 1 in the cutting and edge sealing station 7 they are held between the upper abutment 40 and the lower abutment 41, as shown in Fig. 3. Then the cutting device 20 is moved by the lifting device 23 from the first position shown in Fig. 3 in the second position shown in Fig. 4, whereby the path of the moldable sheet material 3 each outside the outer contour of a shell 1 around by the cutting blade 22nd is severed, so that a lateral edge 3a of the sheet-like material 3 outside the peripheral upper edge 13 of each shell 1 is formed. Subsequently, the sealing tool 31 of the edge sealing device 30 is moved by means of the lifting device 32 from the first position shown in FIG. 4 into the second position shown in FIG. 5. By this movement, the lateral edge 3a of the moldable sheet material 3 is pressed by the circumferential projecting edge 33 of the sealing tool 31 along the entire contour of the peripheral upper edge 13 of the shell 1 in an upper portion 14a against the outer side edge 14 of the shell 1, as Best seen in the enlarged detail view in Fig. 6. In this case, the encircling projecting edge 33 of the sealing tool 31 is heated and there is a thermal sealing of the lateral edge 3a of the moldable sheet material 3 to the outer side edge 14 of the shell 1. The peripheral projecting edge 33 presses the lateral edge 3a of the sheet material. 3 against the upper portion 14a. The circumferential projecting edge 33 is therefore in contact with the upper section 14a via the formable sheet-like material 3.

Die Innenwand 34 des umlaufenden vorspringenden Randes 33 gewährleistet, dass der seitliche Rand 3a des bahnförmigen Materials 3 zuverlässig gegen den äußeren Seitenrand 14 der Schale 1 gedrückt wird. Die abgeschrägte Fläche 35 ermöglicht ein problemloses Übergreifen des umlaufenden Randes 13 der Schale 1 durch den umlaufenden vorspringenden Rand 33 auch dann, wenn sich die Schale 1 nicht optimal in der Schalenaufnahmeposition A befindet.The inner wall 34 of the peripheral projecting edge 33 ensures that the lateral edge 3a of the web-shaped Material 3 is reliably pressed against the outer side edge 14 of the shell 1. The beveled surface 35 allows easy passing over the peripheral edge 13 of the shell 1 by the circumferential projecting edge 33, even if the shell 1 is not optimally located in the tray receiving position A.

Anschließend werden die Schneideeinrichtung 20 und die Randsiegeleinrichtung 30 wieder in die in Fig. 3 gezeigte Position bewegt, die Schneide- und Randsiegelstation 7 wird geöffnet und die erzeugten Verpackungen werden weitertransportiert. Die Schneide- und Randsiegelstation 7 weist demnach drei Hubvorrichtungen auf, für das Öffnen und Schließen der gesamten Station, für die Bewegung der Schneideeinrichtung 20 und für die Bewegung der Randsiegeleinrichtung 30. Diese können z.B. alle über Kolben-Zylinder-Einrichtungen realisiert sein.Subsequently, the cutting device 20 and the edge sealing device 30 are moved back into the position shown in Fig. 3, the cutting and edge sealing station 7 is opened and the packaging produced are transported on. The cutting and edge sealing station 7 thus has three lifting devices, for opening and closing the entire station, for the movement of the cutting device 20 and for the movement of the edge sealer 30. These may e.g. all be realized via piston-cylinder devices.

Die so erzeugten Verpackungen können dann in einer nicht dargestellten Füllstation mit dem zu verpackenden Gut befüllt werden und anschließend in einer ebenfalls nicht dargestellten Versiegelstation mit einem zweiten bahnförmigen Material entlang des umlaufenden oberen Randes 13 versiegelt werden. Es kann auch eine Evakuiereinrichtung vorgesehen sein, in der die Atmosphäre in der Verpackung evakuiert und durch ein Austauschgas ersetzt wird. Dabei kommt insbesondere ein Austausch durch ein Schutzgas, wie z.B. CO2, infrage, das ein Altern des verpackten Gutes verhindert bzw. verzögert.The packaging thus produced can then be filled in a filling station, not shown, with the goods to be packaged and then sealed in a sealing station, also not shown with a second web-shaped material along the peripheral upper edge 13. It may also be provided an Evakuiereinrichtung in which the atmosphere in the package is evacuated and replaced by a replacement gas. In particular, an exchange by a protective gas, such as CO 2 , in question, which prevents aging of the packaged goods or delayed.

Bei der dargestellten Ausführungsform erfolgt ein Transport der Schalen 1 und des formbaren bahnförmigen Materials 3 von einer Arbeitsstation zu der nächsten taktweise in einem Hauptmaschinentakt und das Schneiden und Siegeln des Randes in der Schneide- und Randsiegelstation 7 erfolgt in einem Taktzyklus.In the illustrated embodiment, the trays 1 and the formable sheet material 3 are transported from one workstation to the next in a clockwise cycle in a main machine cycle, and the edge is cut and sealed in the cutting and edge sealing station 7 in one clock cycle.

Abwandlungen der beschriebenen AusführungsformModifications of the described embodiment

Obwohl bei der beschriebenen Ausführungsform die Schalen 1 mit der Mulde 10 nach unten gerichtet verarbeitet werden und die Schneidmesser 22 und das Ansiegelwerkzeug 31 unterhalb der Bahn des formbaren bahnförmigen Materials 3 angeordnet sind, ist die umgekehrte Anordnung ebenfalls möglich.Although in the described embodiment the trays 1 are processed with the trough 10 directed downwards and the cutting knives 22 and the tucking tool 31 are located below the path of the formable sheet material 3, the reverse arrangement is also possible.

In der beschriebenen Ausführungsform ist ein Ansiegeln des überstehenden Randes 3a des formbaren bahnförmigen Materials durch Wärmeeinwirkung beschrieben, es ist jedoch auch eine andere Form des Ansiegelns möglich, wie z.B. ein Ankleben.In the described embodiment sealing of the overhanging edge 3a of the moldable sheet material by heat is described, however, another form of sealing is possible, such as e.g. a sticking.

Die Verpackung ist auch nicht auf die beschriebene Form beschränkt, es sind viele verschiedene Verpackungsformen je nach zu verpackendem Produkt denkbar. Ebensowenig ist die Verpackung auf das bei der obigen Ausführungsform beschriebene geschäumte Polystyrol beschränkt, es sind vielmehr verschiedene Materialien denkbar, die eine solche Beschichtung erforderlich machen.The packaging is not limited to the form described, there are many different packaging forms depending on the product to be packaged conceivable. Also, the package is not limited to the foamed polystyrene described in the above embodiment, but various materials that require such a coating are conceivable.

Bei der beschriebenen Ausführungsform der Verpackungsmaschine sind die Schneideeinrichtung 20 und die Randsiegeleinrichtung 30 in einer Schneide- und Randsiegelstation 7 integriert, es ist jedoch auch eine separate Ausbildung möglich. Dann müssen die Verpackungen nach dem Schneiden und vor dem Siegeln des Randes jedoch erneut ergriffen werden und die Verarbeitung in der Schneideeinrichtung 20 und in der Randsiegeleinrichtung 30 erfolgt in voneinander verschiedenen Taktzyklen.In the described embodiment of the packaging machine, the cutting device 20 and the edge sealing device 30 are integrated in a cutting and edge sealing station 7, but it is also a separate training possible. Then, however, the packages must be re-grasped after cutting and before sealing the edge, and processing in the cutter 20 and in the edge sealer 30 occurs in mutually different clock cycles.

Auch ist es möglich, das Austrennen der Verpackungen aus dem formbaren bahnförmigen Material nicht in einem Schritt durchzuführen, sondern z.B. eine separate Längs- und Querschneidung vorzusehen.It is also possible not to carry out the removal of the packages from the moldable sheet material in one step, but e.g. to provide a separate longitudinal and Querschneidung.

Claims (20)

  1. Method for production of a packaging with the steps:
    lining of a shell (1) with a formable material (3) in the form of strips and
    sealing of a laterally projecting edge (3a) of the formable material (3) in the form of strips onto the circumferential external side edges (14) of the shell,
    characterised in that the sealing is done using a sealing tool (31) which grips around a contour of the external side edges (14) of the shell (1).
  2. Method according to claim with the additional step:
    removal of a section of the formable material (3) in the form of strips along a contour outside the shell (1) after lining the shell.
  3. Method according to one of claims 1 or 2 with the additional step:
    sealing on of a second material (2) in the form of strips on the formable material in the form of strips along a peripheral edge (13) of the shell (1).
  4. Method according to one of claims 1 to 3, in which the formable material (3) in the form of strips is a thermoplastic synthetic film.
  5. Method according to one of claims 1 to 4, in which the lining is done using deep drawing.
  6. Method according to one of claims 1 to 5, in which bonding of the formable material (3) in the form of strips to the shell (1) following lining is achieved by the effect of heat.
  7. Method according to one of claims 1 to 6, in which the sealing of the laterally projecting edge (3a) is achieved by the effect of heat.
  8. Method according to claims 2 to 7, in which the detachment of the section of the formable material (3) in the form of strips and the sealing along the peripheral side edges (14) occurs in the same work cycle.
  9. Method according to one of claims 1 to 8, in which the shell (1) consists of a porous synthetic material.
  10. Device for producing a packaging with
    a lining station for lining shells (1) with a formable material (3) in the form of strips;
    a rim sealing device (30) with a shell receiving position (A) and a plane of extension (E) for unformed formable material in the form of strips, characterised in that the rim sealing device (30) has a sealing tool (31) and is movable from a first position at a distance from the shell receiving position (A) and from the plane of extension (E) into a second position, in which the sealing tool (31) grips around a contour of the external side edges of a shell in the shell receiving position (A) and breaks through the plane of extension (E) for the material in the form of strips.
  11. Device according to claim 10, in which a cutting device (20) is equipped with a cutting tool (22) which is movable from a first position at a distance from the plane of extension (E) for the formable material (3) in the form of strips into a second position, in which it breaks through the plane of extension (E) for the material in the form of strips.
  12. Device according to one of claims 10 or 11, in which the sealing tool (31) has a peripheral projecting edge (33).
  13. Device according to claim 12, in which the inner contour of the projecting edge (33) is adapted to the outer contour of a shell to be processed.
  14. Device according to one of claims 12 or 13, in which the projecting edge (33) has an area (34) on its inside parallel to the direction of movement of the edge sealing device from the first position into the second position.
  15. Device according to one of claims 11 to 14 in which the edge sealing device (30) and the cutting device (20) are integrated into a work station (7).
  16. Device according to one of claims 11 to 15, in which the cutting tool (22) is a blade which presses from one side against the strip of the formable material (3) in the form of strips.
  17. Device according to one of claims 11 to 16, in which a controller is provided which controls the cutting device (20) and the edge sealing device (30) in such a way that firstly the cutting tool (22) is moved into its second position and then the sealing tool (31) is moved into its second position.
  18. Device according to one of claims 10 to 17, in which the inner contour of the sealing tool (31) has an edge (35) which is bevelled towards its free end.
  19. Device according to one of claims 10 to 18, in which the lining station (6) is a deep-drawing device.
  20. Device according to one of claims 10 to 19, in which the sealing tool (31) can be heated.
EP06015041A 2005-07-28 2006-07-19 Device and method to apply a lining to a container Not-in-force EP1747880B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005035489A DE102005035489B4 (en) 2005-07-28 2005-07-28 Apparatus and method for coating packaging

Publications (2)

Publication Number Publication Date
EP1747880A1 EP1747880A1 (en) 2007-01-31
EP1747880B1 true EP1747880B1 (en) 2007-09-05

Family

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Application Number Title Priority Date Filing Date
EP06015041A Not-in-force EP1747880B1 (en) 2005-07-28 2006-07-19 Device and method to apply a lining to a container

Country Status (2)

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EP (1) EP1747880B1 (en)
DE (2) DE102005035489B4 (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN101638189B (en) * 2008-07-16 2011-09-07 莫迪维克贸易有限公司 Film coiling device and packaging machine with the same

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DE102010000265B4 (en) * 2010-01-31 2018-04-19 Rainer Spies-Matsuo Two-piece disposable meal box for food, ready meals and hamburgers
GB2492828B (en) 2011-07-14 2015-07-22 Boys Ltd 3 Disposable container
GB2509746B (en) 2013-01-11 2016-07-13 3 Boys Ltd Method of manufacture of a container
HUE064600T2 (en) * 2019-04-19 2024-04-28 Siropack Italia S R L Method to manufacure a container for food products

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SE308198B (en) * 1965-11-01 1969-02-03 Karpos & Co Ab
DE7434631U (en) * 1974-10-16 1975-01-23 Bachmann Adolf Insulated container made of foam for ready meals in disposable packaging
GB1602625A (en) * 1977-03-23 1981-11-11 Tokan Kogyo Co Ltd Double-walled paper container and a method for producing the same
JPS573605U (en) * 1980-06-09 1982-01-09
FI881056A (en) * 1987-03-27 1988-09-28 Amerplast Oy FOERFARANDE FOER TILLVERKNING AV LIVSMEDELSFOERPACKNING.
EP0816239A1 (en) * 1996-07-03 1998-01-07 Danapak A/S Packaging container and tool for the manufacture thereof
DE19654230A1 (en) * 1996-12-23 1998-07-02 Jochen Dietrich Food packaging, method for producing an oxygen-tight packaging, device for carrying out such a method and related cardboard cuts used
DE19828381A1 (en) * 1998-06-25 1999-12-30 Jochen Dietrich Packaging for food, which has a gas-tight cover
DE10134232A1 (en) * 2001-07-13 2003-01-23 Jochen Dietrich Packaging unit comprises a tray and an edge flange which are joined to one another by two lining foils respectively covering the tray and the assembled unit
JP4834935B2 (en) * 2001-08-09 2011-12-14 凸版印刷株式会社 Manufacturing method of paper container with flange

Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN101638189B (en) * 2008-07-16 2011-09-07 莫迪维克贸易有限公司 Film coiling device and packaging machine with the same

Also Published As

Publication number Publication date
DE102005035489B4 (en) 2007-04-05
DE502006000087D1 (en) 2007-10-18
EP1747880A1 (en) 2007-01-31
DE102005035489A1 (en) 2007-02-01

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