EP2668102B1 - Packaging machine and process for the preparation of individual evacuated packeges - Google Patents

Packaging machine and process for the preparation of individual evacuated packeges Download PDF

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Publication number
EP2668102B1
EP2668102B1 EP12703241.5A EP12703241A EP2668102B1 EP 2668102 B1 EP2668102 B1 EP 2668102B1 EP 12703241 A EP12703241 A EP 12703241A EP 2668102 B1 EP2668102 B1 EP 2668102B1
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EP
European Patent Office
Prior art keywords
packaging machine
pack
packaging
format
gas
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EP12703241.5A
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German (de)
French (fr)
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EP2668102A1 (en
EP2668102B2 (en
Inventor
Gerd HÜBNER
Klaus Meyer
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GEA Food Solutions Germany GmbH
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GEA Food Solutions Germany GmbH
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Application filed by GEA Food Solutions Germany GmbH filed Critical GEA Food Solutions Germany GmbH
Priority to PL12703241T priority Critical patent/PL2668102T3/en
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Classifications

    • 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
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/02—Enclosing successive articles, or quantities of material between opposed webs
    • B65B9/04—Enclosing successive articles, or quantities of material between opposed webs one or both webs being formed with pockets for the reception of the articles, or of the quantities of material
    • 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
    • B65B31/021—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 the containers or wrappers being interconnected
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/04—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied
    • B65B31/043—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied the nozzles acting horizontally between an upper and a lower part of the container or wrapper, e.g. between container and lid
    • 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
    • B65B41/00—Supplying or feeding container-forming sheets or wrapping material
    • B65B41/12—Feeding webs from rolls
    • 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
    • B65B57/00—Automatic control, checking, warning, or safety devices
    • 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
    • B65B59/00—Arrangements to enable machines to handle articles of different sizes, to produce packages of different sizes, to vary the contents of packages, to handle different types of packaging material, or to give access for cleaning or maintenance purposes
    • B65B59/003—Arrangements to enable adjustments related to the packaging material
    • 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
    • B65B47/00—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved
    • 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
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
    • B65B61/06—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting

Definitions

  • the present invention relates to a method for producing a package in which a web is cyclically transported along a packaging machine and a format of several packaging trays is molded into the web per cycle, the packaging trays are then filled with a packaged goods and then a top product web on the Packaging tray is sealed, being degassed before sealing the packaging tray and / or a gas exchange is made
  • the present invention relates to a packaging machine.
  • This packaging machine is preferably a so-called FFS packaging machine, i. H. a so-called form-fill-seal packaging machine.
  • a web is cyclically transported along the packaging machine.
  • a format consisting of several packaging troughs in a web usually a plastic film web, for example by deep drawing, shaped and after filling the respective packaging tray with a packaged, they are in a sealing station with a Oberwarenbahn, in which it The rule is also a plastic film, closed.
  • the top fabric web is materially connected in particular by sealing with the lower fabric web.
  • the atmosphere of the packaging tray is at least partially replaced by a replacement gas.
  • This gas exchange can follow a degassing of the packaging tray.
  • the replacement gas may be, for example, nitrogen, carbon dioxide, argon or oxygen or a mixture of these or other gases.
  • the packaging machine has a loading and / or degassing means, with which the individual packaging troughs of a format can be at least partially individually degassed or degassed. It is preferably possible to treat or degasify each of the packaging troughs differently. This makes it possible to take into account individually the conditions prevailing in the respective packaging trough. As a result, the degassing and / or gassing time can be shortened and / or the volume which is removed during degassing of the packaging trough or injected into the packaging trough during gassing can be reduced. The respective packages can thereby be produced cheaper and / or faster and / or with higher quality. Furthermore, the negative pressure generated in the respective packaging trough or the amount of gas supplied to the respective packaging trough can be recorded and accurately recorded, which can be of great importance in quality monitoring.
  • the gassing and degassing means are provided as a unit.
  • a plurality of packaging trays are formed in the lower fabric web per cycle, filled and then closed.
  • a format has at least one column, wherein one column has a plurality of packaging troughs arranged transversely to the transport direction of the lower fabric web.
  • a format has a plurality of such columns, which are arranged one behind the other with respect to the transport direction of the lower fabric web.
  • a format also has several rows of packaging troughs arranged parallel to the transport direction of the lower fabric web.
  • one obturator for example a valve
  • the gas volume taken from the packaging tray, or which is blown into the packaging tray set individually.
  • the packaging machine has a measuring means, preferably a measuring means per packaging tray, a measuring means per row and / or a measuring means per column of a format, with each of the pressure and / or concentration of at least one gas component in the / the packaging trough is detected.
  • the packaging machine according to the invention is provided with a control that regulates, for example, the obturator.
  • this regulation takes place on the basis of one or more signals of the measuring means.
  • the packaging machine has a means by which the level of the packaged goods in the respective packaging tray and / or the filling quantity of the packaged goods within the respective packaging tray can be determined.
  • the shut-off device can in turn be regulated, for example, in order to individually regulate the gas volume taken or supplied to the respective packaging trough.
  • the gassing and / or degassing agent is preferably a replacement part which is exchanged during a format change.
  • the aeration or degassing means is provided by means of a quick release on the packaging machine according to the invention.
  • Another object of the present invention is a method for producing a package in which a web is cyclically transported along a packaging machine and per cycle a format of several packaging trays is formed in the web, the packaging trays are then filled with a packaged goods and then a top product web the packaging troughs are sealed, wherein prior to sealing the packaging troughs degassed and / or a gas exchange is carried out and in which the packaging troughs of a format are at least partially individually discharged and / or fumigated.
  • the amount of gas and / or the negative pressure generated in the respective packaging tray or the respective packaging tray is supplied, regulated.
  • FIG. 1 shows the packaging machine 1 according to the invention, which has a thermoforming station 2, a filling station 7 and a sealing station 19.
  • a web 8, here a plastic film web 8, the so-called sub-web, is withdrawn from a supply roll and cyclically transported along the packaging machine according to the invention from right to left. At one cycle, the web 8 is transported on by one format length.
  • the packaging machine has two transport means, in the present case in each case two endless chains, which are arranged to the right and left of the film web. Both at the beginning and at the end of the packaging machine at least one gear is provided for each chain in each case, around which the respective chain is deflected. At least one of these gears is driven.
  • the gears in the input area and / or in the output area may be connected to each other, preferably by a rigid shaft.
  • Each transport means has a plurality of clamping means which grip the web 8 in the inlet region 26 by clamping and transmit the movement of the transport means to the lower film 8. In the outlet region of the packaging machine, the clamping connection between the transport and the web 8 is released again.
  • the thermoforming station 2 which has an upper tool 3 and a lower tool 4, which has the shape of the packaging tray to be produced, the packaging trays 6 are formed in the film web 8.
  • the lower tool 4 is arranged on a lifting table 5, which, as symbolized by the double arrow, is vertically adjustable. Before each film feed, the lower tool 4 is lowered and then raised again.
  • the packaging trays are then filled in the filling station 7 with the packaged goods 16.
  • the subsequent sealing station 19 which also consists of an upper tool 12 and a vertically adjustable lower tool 11, a top film 14 is firmly bonded, preferably by sealing, to the web 8.
  • the upper tool and / or the lower tool are lowered or raised before and after each film transport.
  • a certain negative pressure is generated in the filled packaging tray and / or there is a gas exchange.
  • the generation of the negative pressure or the gas exchange are preferably carried out while the respective packaging tray is within the sealing station, preferably immediately before the sealing tools 11, 12 are pressed against each other.
  • the upper film 14 may be guided in transport or be transported by transport chains, which then transport only from the sealing station and possibly downstream extend. Otherwise, the statements that have been made to the means of transport of the lower film apply.
  • the finished packages are separated, which takes place in the present case with the cross cutter 25 and the slitter 27.
  • the cross cutter 25 can also be raised or lowered in the present case by means of a lifting device 9.
  • FIG. 2 shows the sealing station of the packaging machine according to the invention, in which an upper film web is sealed onto the filled packaging trays 6.
  • the not yet closed with a lid film packaging trays are provided with the reference numeral 6, the already closed packaging trays with the reference numeral 6 '.
  • the representation according to FIG. 2 It can also be seen that this packaging machine operates in cycles, with each cycle a format 15, which in the present case consists of three rows 24 and three columns 18 of packaging trays, is further transported to a certain extent, in particular by the length of the format 15 , The transport direction is symbolized by an arrow. Before the respective packaging tray is closed with the cover film, air is sucked out of the packaging trays according to the invention. This is done in the present case with a degassing 17.
  • This degassing 17 is inventively designed so that the gas volume that is taken from the respective packaging tray, can be controlled individually.
  • the packaging machine according to the invention in the present case, a fumigant 13, which may be identical or similar to the degassing 17 constructed.
  • the fumigant too, it is possible to individually adjust the gas quantity supplied to the respective packaging trough and / or the gas composition supplied to the respective packaging trough.
  • the degassing agent can also be provided so that only the rows or columns of a format are each individually loaded and / or degassed ie that the packaging troughs of each row or the respective column are treated the same.
  • FIG. 3 shows details of the fumigant or fumigant 17, 13.
  • This is provided in the present case as a tree 20 having a plurality of branches, in the present case, one branch per column is provided.
  • each packaging cavity is associated with a nozzle 21, which is preceded by a valve 22, so that the amount of gas taken from the respective packaging tray is individually adjustable.
  • the valve 22 is controlled by a controller. This control can be provided so that the valve 22 is only opened or closed.
  • control can also be provided so that by means of the valve 22, the negative pressure with which the gas volume is sucked out of the respective packaging tray or the overpressure with which the replacement gas is blown into the packaging tray, is adjustable.
  • the packaging machine according to the invention has per packaging recess a measuring means, for example a pressure sensor and / or a sensor with which at least the concentration of a gas component of the gas within the packaging cavity can be detected.
  • the valve 22 is preferably regulated in each case.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Vacuum Packaging (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Description

Die vorliegende Erfindung betrifft eine Verpackungsmaschine, bei der eine Warenbahn taktweise transportiert wird mit:

  • einer Tiefziehstation, die pro Takt ein Format von mehreren Verpackungsmulden in die Warenbahn formt,
  • einer Füllstation, in der ein Verpackungsgut in jede Verpackungsmulde gefüllt wird,
  • einer Siegelstation, die eine Oberwarenbahn auf der Warenbahn stoffschlüssig befestigt, wobei vor der stoffschlüssigen Verbindung die Verpackungsmulde ent- und/oder begast wird und
  • einer Schneideinrichtung, die die so fertiggestellten Verpackungen aus den Warenbahnen vereinzelt.
The present invention relates to a packaging machine in which a web is cyclically transported with:
  • a thermoforming station, which forms a format of several packaging troughs per cycle in the web,
  • a filling station in which a packaged item is filled into each packaging tray,
  • a sealing station, which affixes a top goods web on the web of material, wherein before the cohesive connection the packaging tray is discharged and / or gassed and
  • a cutting device that separates the thus finished packaging from the webs.

Des Weiteren betrifft die vorliegende Erfindung ein Verfahren zur Herstellung einer Verpackung, bei dem eine Warenbahn taktweise entlang einer Verpackungsmaschine transportiert und pro Takt ein Format von mehreren Verpackungsmulden in die Warenbahn eingeformt wird, die Verpackungsmulden danach mit einem Verpackungsgut befüllt werden und danach eine Oberwarenbahn auf die Verpackungsmulde gesiegelt wird, wobei vor dem Siegeln die Verpackungsmulde entgast und/oder ein Gasaustausch vorgenommen wirdFurthermore, the present invention relates to a method for producing a package in which a web is cyclically transported along a packaging machine and a format of several packaging trays is molded into the web per cycle, the packaging trays are then filled with a packaged goods and then a top product web on the Packaging tray is sealed, being degassed before sealing the packaging tray and / or a gas exchange is made

Die gattungsgemäße Verpackungsmaschine bzw. das gattungsgemäße Verfahren sind aus dem Stand der Technik bekannt. An derartigen Verpackungsmaschinen bzw. Verfahren werden heutzutage immer höhere Qualitätsanforderungen gestellt. Gleichzeitig müssen die jeweiligen Verpackungen immer günstiger hergestellt werden.The generic packaging machine or the generic method are known from the prior art. At such packaging machines or processes nowadays ever higher quality requirements are made. At the same time, the respective packaging must always be produced more cheaply.

Es war deshalb die Aufgabe der vorliegenden Erfindung existierende Verpackungsmaschinen bzw. Verfahren zu verbessern und/oder Verpackungen günstiger herstellen zu können.It was therefore the object of the present invention to improve existing packaging machines or processes and / or to be able to produce packaging more cheaply.

Die Aufgabe wird gelöst mit einer Verpackungsmaschine, bei der eine Warenbahn taktweise transportiert wird mit:

  • einer Tiefziehstation, die pro Takt ein Format von mehreren Verpackungsmulden in die Warenbahn formt,
  • einer Füllstation, in der ein Verpackungsgut in jede Verpackungsmulde gefüllt wird,
  • einer Siegelstation, die eine Oberwarenbahn auf der Warenbahn stoffschlüssig befestigt, wobei vor der stoffschlüssigen Verbindung die Verpackungsmulde ent- und/oder begast wird und
  • einer Schneideinrichtung, die die so fertiggestellten Verpackungen aus den Warenbahnen vereinzelt,
wobei sie ein Begasungs- und/oder ein Entgasungsmittel aufweist, mit dem die einzelnen Verpackungsmulden eines Formates zumindest teilweise individuell be- und/oder entgasbar sind.The object is achieved with a packaging machine in which a web is transported intermittently with:
  • a thermoforming station, which forms a format of several packaging troughs per cycle in the web,
  • a filling station in which a packaged item is filled into each packaging tray,
  • a sealing station, which affixes a top goods web on the web of material, wherein before the cohesive connection the packaging tray is discharged and / or gassed and
  • a cutting device which separates the thus finished packages from the webs,
wherein it has a gassing and / or degassing, with which the individual packaging wells of a format are at least partially individually bes- and / or degassed.

Die vorliegende Erfindung betrifft eine Verpackungsmaschine. Bei dieser Verpackungsmaschine handelt es sich vorzugsweise um eine sogenannte FFS-Verpackungsmaschine, d. h. eine sogenannte Form-Fill-Seal-Verpackungsmaschine.The present invention relates to a packaging machine. This packaging machine is preferably a so-called FFS packaging machine, i. H. a so-called form-fill-seal packaging machine.

Bei einer derartigen Verpackungsmaschine wird eine Warenbahn taktweise entlang der Verpackungsmaschine transportiert. Bei jedem Takt wird ein Format bestehend aus mehreren Verpackungsmulden in eine Warenbahn, in der Regel einer Kunststofffolienbahn, beispielsweise durch Tiefziehen, geformt und nach dem Füllen der jeweiligen Verpackungsmulde mit einem Verpackungsgut, werden sie in einer Siegelstation mit einer Oberwarenbahn, bei der es sich in der Regel ebenfalls um eine Kunststofffolienbahn handelt, verschlossen. Dabei wird die Oberwarenbahn stoffschlüssig insbesondere durch Siegeln mit der Unterwarenbahn verbunden. Vor dieser Verbindung werden die Verpackungsmulden nun erfindungsgemäß ent- und/oder begast, wobei beim Entgasen ein gewisses Vakuum, d. h. ein gewisser Unterdruck in der Verpackungsmulde erzeugt wird. Beim Begasen erfolgt ein Gasaustausch in der Verpackungsmulde, d. h. die Atmosphäre der Verpackungsmulde wird durch ein Austauschgas zumindest teilweise ersetzt. Dieser Gasaustausch kann sich an eine Entgasung der Verpackungsmulde anschließen. Bei dem Austauschgas kann es sich beispielsweise um Stickstoff, Kohlendioxid, Argon oder Sauerstoff oder eine Mischung aus diesen oder anderen Gasen handeln. Nachdem die Oberwarenbahn stoffschlüssig an der Unterwarenbahn angeordnet ist, werden die so fertiggestellten Verpackungen anschließend aus den Warenbahnen vereinzelt. Dabei kann die Oberwarenbahn getrennt von der Unterwarenbahn durchtrennt werden. Es ist jedoch auch möglich die beiden Warenbahnen gleichzeitig zu durchtrennen.In such a packaging machine, a web is cyclically transported along the packaging machine. At each cycle, a format consisting of several packaging troughs in a web, usually a plastic film web, for example by deep drawing, shaped and after filling the respective packaging tray with a packaged, they are in a sealing station with a Oberwarenbahn, in which it The rule is also a plastic film, closed. In this case, the top fabric web is materially connected in particular by sealing with the lower fabric web. Before this connection, the packaging troughs are now according to the invention discharged and / or fumigated, wherein the degassing a certain vacuum, d. H. a certain negative pressure in the packaging tray is generated. When gassing is a gas exchange in the packaging tray, d. H. the atmosphere of the packaging tray is at least partially replaced by a replacement gas. This gas exchange can follow a degassing of the packaging tray. The replacement gas may be, for example, nitrogen, carbon dioxide, argon or oxygen or a mixture of these or other gases. After the upper goods web is cohesively arranged on the lower fabric web, the finished packaging is then separated from the webs. In this case, the top fabric web can be severed separately from the lower fabric web. However, it is also possible to sever the two webs simultaneously.

Erfindungsgemäß weist die Verpackungsmaschine ein Be- und/oder ein Entgasungsmittel auf, mit dem die einzelnen Verpackungsmulden eines Formates zumindest teilweise individuell be- bzw. entgast werden können. Vorzugsweise ist es möglich alle Verpackungsmulden jeweils unterschiedlich zu be- bzw. entgasen. Dadurch ist es möglich, individuell den in der jeweiligen Verpackungsmulde herrschenden Bedingungen Rechnung zu tragen. Folglich kann die Ent- und/oder Begasungszeit verkürzt werden und/oder das Volumen, das beim Entgasen der Verpackungsmulde entnommen bzw. beim Begasen in die Verpackungsmulde eingeblasen wird, kann reduziert werden. Die jeweiligen Verpackungen lassen sich dadurch preiswerter und/oder schneller und/oder mit höherer Qualität herstellen. Des Weiteren kann der in der jeweiligen Verpackungsmulde erzeugte Unterdruck bzw. die der jeweiligen Verpackungsmulde zugeführte Gasmenge erfasst und genau protokolliert werden, was bei einem Qualitätsmonitoring von großer Bedeutung sein kann.According to the invention, the packaging machine has a loading and / or degassing means, with which the individual packaging troughs of a format can be at least partially individually degassed or degassed. It is preferably possible to treat or degasify each of the packaging troughs differently. This makes it possible to take into account individually the conditions prevailing in the respective packaging trough. As a result, the degassing and / or gassing time can be shortened and / or the volume which is removed during degassing of the packaging trough or injected into the packaging trough during gassing can be reduced. The respective packages can thereby be produced cheaper and / or faster and / or with higher quality. Furthermore, the negative pressure generated in the respective packaging trough or the amount of gas supplied to the respective packaging trough can be recorded and accurately recorded, which can be of great importance in quality monitoring.

Vorzugsweise sind das Begasungs- und das Entgasungsmittel als eine Einheit vorgesehen.Preferably, the gassing and degassing means are provided as a unit.

Wie bereits oben erwähnt, werden pro Takt eine Mehrzahl von Verpackungsmulden in die Unterwarenbahn eingeformt, befüllt und dann verschlossen. Ein derartiges Format weist mindestens eine Spalte auf, wobei eine Spalte über mehrere, quer zur Transportrichtung der Unterwarenbahn angeordnete Verpackungsmulden verfügt. Vorzugsweise weist ein derartiges Format eine Mehrzahl derartiger Spalten, die bezogen auf die Transportrichtung der Unterwarenbahn hintereinander angeordnet sind, auf. Ein Format verfügt außerdem über mehrere Reihen an Verpackungsmulden, die parallel zu der Transportrichtung der Unterwarenbahn angeordnet sind.As already mentioned above, a plurality of packaging trays are formed in the lower fabric web per cycle, filled and then closed. Such a format has at least one column, wherein one column has a plurality of packaging troughs arranged transversely to the transport direction of the lower fabric web. Preferably, such a format has a plurality of such columns, which are arranged one behind the other with respect to the transport direction of the lower fabric web. A format also has several rows of packaging troughs arranged parallel to the transport direction of the lower fabric web.

Vorzugsweise ist nun vorgesehen, dass in dem Begasungs- und/oder in dem Entgasungsmittel pro Verpackungsmulde, pro Reihe und/oder pro Spalte eines Formates jeweils ein Absperrorgan, beispielsweise ein Ventil, vorgesehen ist. Mit diesem Absperrorgan ist es beispielweise möglich das Gasvolumen, das der Verpackungsmulde entnommen, bzw. das in die Verpackungsmulde eingeblasen wird, individuell festzulegen.Preferably, it is now provided that in each case one obturator, for example a valve, is provided in the gassing and / or in the degassing agent per packaging tray, per row and / or per column of a format. With this shut-off, it is possible, for example, the gas volume taken from the packaging tray, or which is blown into the packaging tray, set individually.

In einer weiteren bevorzugten Ausführungsform der vorliegenden Erfindung weist die Verpackungsmaschine ein Messmittel, vorzugsweise ein Messmittel pro Verpackungsmulde, ein Messmittel pro Reihe und/oder ein Messmittel pro Spalte eines Formates auf, mit dem jeweils der Druck und/oder die Konzentration mindestens einer Gaskomponente in der/den Verpackungsmulden feststellbar ist.In a further preferred embodiment of the present invention, the packaging machine has a measuring means, preferably a measuring means per packaging tray, a measuring means per row and / or a measuring means per column of a format, with each of the pressure and / or concentration of at least one gas component in the / the packaging trough is detected.

Weiterhin bevorzugt ist die erfindungsgemäße Verpackungsmaschine mit einer Regelung versehen, die beispielsweise das Absperrorgan regelt. Insbesondere erfolgt diese Regelung aufgrund eines oder mehrerer Signale der Messmittel.Further preferably, the packaging machine according to the invention is provided with a control that regulates, for example, the obturator. In particular, this regulation takes place on the basis of one or more signals of the measuring means.

Weiterhin bevorzugt weist die erfindungsgemäße Verpackungsmaschine ein Mittel auf, mit dem der Füllstand des Verpackungsgutes in der jeweiligen Verpackungsmulde und/oder die Füllmenge des Verpackungsgutes innerhalb der jeweiligen Verpackungsmulde feststellbar ist. In Abhängigkeit von diesem Messsignal kann dann wiederum beispielsweise das Absperrorgan geregelt werden, um das Gasvolumen, das der jeweiligen Verpackungsmulde entnommen bzw. zugeführt wird, individuell zu regeln.Further preferably, the packaging machine according to the invention has a means by which the level of the packaged goods in the respective packaging tray and / or the filling quantity of the packaged goods within the respective packaging tray can be determined. As a function of this measurement signal, the shut-off device can in turn be regulated, for example, in order to individually regulate the gas volume taken or supplied to the respective packaging trough.

Vorzugsweise handelt es sich bei dem Begasungs- und/oder Entgasungsmittel um ein Austauschteil, das bei einem Formatwechsel ausgetauscht wird. Durch diese bevorzugte Ausführungsform der vorliegenden Erfindung ist es möglich bei einem Formatwechsel ebenfalls das Be- bzw. Entgasungsmittel auszutauschen, damit ein dem jeweiligen Format angepasstes Be- und/oder Entgasungsmittel eingesetzt werden kann. Vorzugsweise ist das Be- oder Entgasungsmittel mittels eines Schnellverschlusses an der erfindungsgemäßen Verpackungsmaschine vorgesehen.The gassing and / or degassing agent is preferably a replacement part which is exchanged during a format change. By means of this preferred embodiment of the present invention, it is also possible, during a format change, to exchange the aeration or degassing agent, so that a loading and / or degassing agent adapted to the respective format can be used. Preferably, the aeration or degassing means is provided by means of a quick release on the packaging machine according to the invention.

Ein weiterer Gegenstand der vorliegenden Erfindung ist ein Verfahren zur Herstellung einer Verpackung, bei dem eine Warenbahn taktweise entlang einer Verpackungsmaschine transportiert und pro Takt ein Format von mehreren Verpackungsmulden in die Warenbahn eingeformt wird, die Verpackungsmulden danach mit einem Verpackungsgut befüllt werden und anschließend eine Oberwarenbahn auf die Verpackungsmulden gesiegelt wird, wobei vor dem Siegeln die Verpackungsmulden entgast und/oder ein Gasaustausch vorgenommen wird und bei dem die Verpackungsmulden eines Formates zumindest teilweise jeweils individuell ent- und/oder begast werden.Another object of the present invention is a method for producing a package in which a web is cyclically transported along a packaging machine and per cycle a format of several packaging trays is formed in the web, the packaging trays are then filled with a packaged goods and then a top product web the packaging troughs are sealed, wherein prior to sealing the packaging troughs degassed and / or a gas exchange is carried out and in which the packaging troughs of a format are at least partially individually discharged and / or fumigated.

Die für die erfindungsgemäße Verpackungsmaschine gemachten Ausführungen gelten für das erfindungsgemäße Verfahren gleichermaßen und umgekehrt.The statements made for the packaging machine according to the invention apply equally to the method according to the invention and vice versa.

Gemäß dem erfindungsgemäßen Verfahren ist es möglich, die jeweiligen Verpackungsmulden eines Formates zumindest teilweise jeweils individuell zu ent- und/oder begasen.In accordance with the method according to the invention, it is possible to discharge and / or aerate the respective packaging troughs of a format at least partially in each case individually.

Vorzugsweise wird die Gasmenge und/oder der Unterdruck, der in der jeweiligen Verpackungsmulde erzeugt bzw. der jeweiligen Verpackungsmulde zugeführt wird, geregelt.Preferably, the amount of gas and / or the negative pressure generated in the respective packaging tray or the respective packaging tray is supplied, regulated.

Im Folgenden werden die Erfindungen anhand der Figuren 1 bis 3 erläutert. Diese Erläuterungen sind lediglich beispielhaft und schränken den allgemeinen Erfindungsgedanken nicht ein. Die Erläuterungen gelten für alle Gegenstände der vorliegenden Erfindung gleichermaßen.

  • Figur 1 zeigt die erfindungsgemäße Verpackungsmaschine.
  • Figur 2 zeigt die Siegelstation der erfindungsgemäßen Verpackungsmaschine.
  • Figur 3 zeigt das Ent- bzw. Begasungsmittels der Siegelstation gemäß Figur 2.
In the following, the inventions are based on the FIGS. 1 to 3 explained. These explanations are merely exemplary and limit the general Inventive idea not one. The explanations apply equally to all articles of the present invention.
  • FIG. 1 shows the packaging machine according to the invention.
  • FIG. 2 shows the sealing station of the packaging machine according to the invention.
  • FIG. 3 shows the degassing or fumigant of the sealing station according to FIG. 2 ,

Figur 1 zeigt die erfindungsgemäße Verpackungsmaschine 1, die eine Tiefziehstation 2, eine Füllstation 7 sowie eine Siegelstation 19 aufweist. Eine Warenbahn 8, hier eine Kunststofffolienbahn 8, die sogenannte Unterbahn, wird von einer Vorratsrolle abgezogen und taktweise, entlang der erfindungsgemäßen Verpackungsmaschine von rechts nach links transportiert. Bei einem Takt wird die Warenbahn 8 um eine Formatlänge weitertransportiert. Dafür weist die Verpackungsmaschine zwei Transportmittel, in dem vorliegenden Fall jeweils zwei Endlosketten, auf, die rechts und links von der Folienbahn angeordnet sind. Sowohl am Anfang als auch am Ende der Verpackungsmaschine ist für jede Kette jeweils mindestens ein Zahnrad vorgesehen, um das die jeweilige Kette umgelenkt wird. Mindestens eines dieser Zahnrader ist angetrieben. Die Zahnräder im Eingangsbereich und/oder im Ausgangsbereich können miteinander, vorzugsweise durch eine starre Welle, verbunden sein. Jedes Transportmittel weist eine Vielzahl von Klemmmitteln auf, die die Warenbahn 8 im Einlaufbereich 26 klemmend ergreifen und die Bewegung des Transportmittels auf die Unterfolie 8 übertragen. Im Auslaufbereich der Verpackungsmaschine wird die klemmende Verbindung zwischen dem Transportmittel und der Warenbahn 8 wieder gelöst. In der Tiefziehstation 2, die über ein Oberwerkzeug 3 und ein Unterwerkzeug 4 verfügt, das die Form der herzustellenden Verpackungsmulde aufweist, werden die Verpackungsmulden 6 in die Folienbahn 8 eingeformt. Das Unterwerkzeug 4 ist auf einem Hubtisch 5 angeordnet, der, wie durch den Doppelpfeil symbolisiert wird, vertikal verstellbar ist. Vor jedem Folienvorschub wird das Unterwerkzeug 4 abgesenkt und danach wieder angehoben. Im weiteren Verlauf der Verpackungsmaschine werden die Verpackungsmulden dann in der Füllstation 7 mit dem Verpackungsgut 16 befüllt. In der sich daran anschließenden Siegelstation 19, die ebenfalls aus einem Oberwerkzeug 12 und einem vertikal verstellbaren Unterwerkzeug 11 besteht, wird eine Oberfolie 14 stoffschlüssig, vorzugsweise durch Siegeln, an der Warenbahn 8 befestigt. Auch in der Siegelstation werden das Oberwerkzeug und/oder das Unterwerkzeug vor und nach jedem Folientransport abgesenkt bzw. angehoben. Vor dem Siegeln der Oberfolie 1 an die Unterfolie 8 wird in der befüllten Verpackungsmulde ein gewisser Unterdruck erzeugt und/oder es erfolgt ein Gasaustausch. FIG. 1 shows the packaging machine 1 according to the invention, which has a thermoforming station 2, a filling station 7 and a sealing station 19. A web 8, here a plastic film web 8, the so-called sub-web, is withdrawn from a supply roll and cyclically transported along the packaging machine according to the invention from right to left. At one cycle, the web 8 is transported on by one format length. For this purpose, the packaging machine has two transport means, in the present case in each case two endless chains, which are arranged to the right and left of the film web. Both at the beginning and at the end of the packaging machine at least one gear is provided for each chain in each case, around which the respective chain is deflected. At least one of these gears is driven. The gears in the input area and / or in the output area may be connected to each other, preferably by a rigid shaft. Each transport means has a plurality of clamping means which grip the web 8 in the inlet region 26 by clamping and transmit the movement of the transport means to the lower film 8. In the outlet region of the packaging machine, the clamping connection between the transport and the web 8 is released again. In the thermoforming station 2, which has an upper tool 3 and a lower tool 4, which has the shape of the packaging tray to be produced, the packaging trays 6 are formed in the film web 8. The lower tool 4 is arranged on a lifting table 5, which, as symbolized by the double arrow, is vertically adjustable. Before each film feed, the lower tool 4 is lowered and then raised again. In the further course of the packaging machine, the packaging trays are then filled in the filling station 7 with the packaged goods 16. In the subsequent sealing station 19, which also consists of an upper tool 12 and a vertically adjustable lower tool 11, a top film 14 is firmly bonded, preferably by sealing, to the web 8. Also in the sealing station, the upper tool and / or the lower tool are lowered or raised before and after each film transport. Before sealing the upper film 1 to the lower film 8, a certain negative pressure is generated in the filled packaging tray and / or there is a gas exchange.

Die Erzeugung des Unterdrucks bzw. der Gasaustausch erfolgen vorzugsweise während sich die jeweilige Verpackungsmulde innerhalb der Siegelstation befindet, vorzugsweise unmittelbar, bevor die Siegelwerkzeuge 11, 12 gegeneinander gepresst werden. Auch die Oberfolie 14 kann in Transportmitteln geführt sein bzw. von Transportketten transportiert werden, wobei sich diese Transportmittel dann nur von der Siegelstation und ggf. stromabwärts erstrecken. Ansonsten gelten die Ausführungen, die zu dem Transportmitteln der Unterfolie gemacht wurden. Im weiteren Verlauf der Verpackungsmaschine werden die fertiggestellten Verpackungen vereinzelt, was in dem vorliegenden Fall mit dem Querschneider 25 und dem Längsschneider 27 erfolgt. Der Querschneider 25 ist in dem vorliegenden Fall ebenfalls mit einer Hubeinrichtung 9 anhebbar bzw. absenkbar.The generation of the negative pressure or the gas exchange are preferably carried out while the respective packaging tray is within the sealing station, preferably immediately before the sealing tools 11, 12 are pressed against each other. The upper film 14 may be guided in transport or be transported by transport chains, which then transport only from the sealing station and possibly downstream extend. Otherwise, the statements that have been made to the means of transport of the lower film apply. In the further course of the packaging machine, the finished packages are separated, which takes place in the present case with the cross cutter 25 and the slitter 27. The cross cutter 25 can also be raised or lowered in the present case by means of a lifting device 9.

Figur 2 zeigt die Siegelstation der erfindungsgemäßen Verpackungsmaschine, bei der eine Oberfolienbahn auf die befüllten Verpackungsmulden 6 gesiegelt wird. Die noch nicht mit einer Deckelfolie verschlossenen Verpackungsmulden sind mit dem Bezugszeichen 6 die bereits verschlossenen Verpackungsmulden mit dem Bezugszeichen 6' versehen. Der Darstellung gemäß Figur 2 ist ebenfalls zu entnehmen, dass diese Verpackungsmaschine taktweise arbeitet, wobei bei jedem Takt ein Format 15, das in dem vorliegenden Fall aus drei Reihen 24 und drei Spalten 18 von Verpackungsmulden besteht, um ein gewisses Maß insbesondere um die Länge des Formates 15 weiter transportiert wird. Die Transportrichtung ist durch einen Pfeil symbolisiert. Bevor die jeweilige Verpackungsmulde mit der Deckelfolie verschlossen wird, wird erfindungsgemäß Luft aus den Verpackungsmulden abgesaugt. Dies erfolgt in dem vorliegenden Fall mit einem Entgasungsmittel 17. Dieses Entgasungsmittel 17 ist erfindungsgemäß so ausgeführt, dass das Gasvolumen, das der jeweiligen Verpackungsmulde entnommen wird, individuell geregelt werden kann. Des Weiteren weist die erfindungsgemäße Verpackungsmaschine in dem vorliegenden Fall ein Begasungsmittel 13 auf, das identisch oder ähnlich wie das Entgasungsmittel 17 aufgebaut sein kann. Es ist jedoch auch möglich die Entgasung und die Begasung mit demselben Mittel durchzuführen. Auch bei dem Begasungsmittel ist es möglich, die der jeweiligen Verpackungsmulde zugeführte Gasmenge und/oder die der jeweiligen Verpackungsmulde zugeführte Gaszusammensetzung jeweils individuell einzustellen. Das Be- bzw. Entgasungsmittel kann jedoch auch so vorgesehen sein, dass nur die Reihen oder Spalten eines Formates jeweils individuell be- und/oder entgast werden d. h. das die Verpackungsmulden der jeweiligen Reihe bzw. der jeweiligen Spalte werden gleich behandelt. FIG. 2 shows the sealing station of the packaging machine according to the invention, in which an upper film web is sealed onto the filled packaging trays 6. The not yet closed with a lid film packaging trays are provided with the reference numeral 6, the already closed packaging trays with the reference numeral 6 '. The representation according to FIG. 2 It can also be seen that this packaging machine operates in cycles, with each cycle a format 15, which in the present case consists of three rows 24 and three columns 18 of packaging trays, is further transported to a certain extent, in particular by the length of the format 15 , The transport direction is symbolized by an arrow. Before the respective packaging tray is closed with the cover film, air is sucked out of the packaging trays according to the invention. This is done in the present case with a degassing 17. This degassing 17 is inventively designed so that the gas volume that is taken from the respective packaging tray, can be controlled individually. Furthermore, the packaging machine according to the invention in the present case, a fumigant 13, which may be identical or similar to the degassing 17 constructed. However, it is also possible to carry out the degassing and the gassing with the same agent. In the case of the fumigant, too, it is possible to individually adjust the gas quantity supplied to the respective packaging trough and / or the gas composition supplied to the respective packaging trough. However, the degassing agent can also be provided so that only the rows or columns of a format are each individually loaded and / or degassed ie that the packaging troughs of each row or the respective column are treated the same.

Figur 3 zeigt Details des Ent- bzw. Begasungsmittels 17, 13. Dieses ist in dem vorliegenden Fall als Baum 20 mit mehreren Ästen vorgesehen, wobei in dem vorliegenden Fall ein Ast pro Spalte vorgesehen ist. Der Fachmann versteht, dass es beispielsweise auch möglich ist einen Ast pro Reihe zur Verfügung zu stellen. In dem vorliegenden Fall ist jeder Verpackungsmulde eine Düse 21 zugeordnet, der ein Ventil 22 vorgeschaltet ist, so dass die Gasmenge, die der jeweiligen Verpackungsmulde entnommen bzw. zugeführt wird, individuell einstellbar ist. Vorzugsweise wird das Ventil 22 von einer Regelung geregelt. Diese Regelung kann so vorgesehen sein, dass das Ventil 22 lediglich geöffnet oder geschlossen wird. Die Regelung kann aber auch so vorgesehen sein, dass mittels des Ventils 22 der Unterdruck, mit dem das Gasvolumen aus der jeweiligen Verpackungsmulde abgesaugt bzw. der Überdruck, mit dem das Austauschgas in die Verpackungsmulde eingeblasen wird, einstellbar ist. Vorzugsweise weist die erfindungsgemäße Verpackungsmaschine pro Verpackungsmulde ein Messmittel, beispielsweise einen Drucksensor und/oder einen Sensor, mit dem zumindest die Konzentration einer Gaskomponente des Gases innerhalb der Verpackungsmulde feststellbar ist, auf. Anhand dieses Signals wird vorzugsweise jeweils das Ventil 22 geregelt. FIG. 3 shows details of the fumigant or fumigant 17, 13. This is provided in the present case as a tree 20 having a plurality of branches, in the present case, one branch per column is provided. The person skilled in the art understands that it is also possible, for example to provide one branch per row. In the present case, each packaging cavity is associated with a nozzle 21, which is preceded by a valve 22, so that the amount of gas taken from the respective packaging tray is individually adjustable. Preferably, the valve 22 is controlled by a controller. This control can be provided so that the valve 22 is only opened or closed. However, the control can also be provided so that by means of the valve 22, the negative pressure with which the gas volume is sucked out of the respective packaging tray or the overpressure with which the replacement gas is blown into the packaging tray, is adjustable. Preferably, the packaging machine according to the invention has per packaging recess a measuring means, for example a pressure sensor and / or a sensor with which at least the concentration of a gas component of the gas within the packaging cavity can be detected. On the basis of this signal, the valve 22 is preferably regulated in each case.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Verpackungsmaschinepackaging machine
22
TiefziehstationThermoforming station
33
Oberwerkzeug der TiefziehstationUpper tool of the thermoforming station
44
Unterwerkzeug der TiefziehstationLower tool of the thermoforming station
55
Hubtisch, Träger eines Werkzeugs der Siegel- , Tiefziehstation und/oder der SchneideinrichtungLifting table, carrier of a tool of the sealing, thermoforming station and / or the cutting device
6, 6'6, 6 '
Verpackungsmuldepackaging tray
77
Füllstationfilling station
88th
Unterwarenbahn, UnterfolienbahnUnterwarenbahn, Unterfolienbahn
99
Hubeinrichtunglifting device
1010
Rahmenframe
1111
Unterwerkzeug der SiegelstationLower tool of the sealing station
1212
Oberwerkzeug der SiegelstationUpper tool of the sealing station
1313
Begasungsmittel, BegasungsdüseFumigant, fumigation nozzle
1414
Oberwarenbahn, Oberfolienbahn, DeckelfolieUpper goods web, upper film web, cover film
1515
Formatformat
1616
Verpackungsgutpackaged goods
1717
Entgasungsmitteldegassing
1818
Spaltecolumn
1919
Siegelstationsealing station
2020
Begasungs-, EntgasungsbaumFumigation, degassing tree
2121
Düsejet
2222
VentilValve
2323
Strömungsrichtungflow direction
2424
Reiheline
2525
Schneideinrichtungcutter
2626
Einlaufbereichintake area
2727
Längsschneiderslitter

Claims (10)

  1. Packaging machine (1), in which a material web (8) is transported cyclically with
    - a thermoforming station (2), which forms a format (15) of a plurality of pack cavities in the material web per cycle,
    - a filling station in which an article to be packed (16) is charged into each pack cavity,
    - a sealing station (19), which fastens an upper material web (14) to the material web (8) with an integral bond, wherein the gas is introduced into or evacuated from the pack cavity prior to the integral bond being made and
    - a cutting device (27), which separates the packs so produced from the material webs (8, 14),
    characterised in that it has a gas supply means (13) and/or a degassing means (17), with which gas can be supplied to or evacuated from the individual pack cavities of a format (15).
  2. Packaging machine (1) in accordance with claim 1 characterised in that the gas supply means (13) and the degassing means (17) are provided in one unit.
  3. Packaging machine (1) in accordance with one of the preceding claims, characterised in that
    a shut-off device (22) is provided respectively in the gas supply means (13) and/or in the degassing means (17) per pack cavity, per row (24) and/or per column (18) of a format
  4. Packaging machine (1) in accordance with one of the preceding claims, characterised in that it has a measuring means, preferably per pack cavity, per row (24) and/or per column (18) of a format, with which respectively the pressure and/or the concentration of at least one gas component in the pack cavity/cavities can be determined.
  5. Packaging machine (1) in accordance with claim 3 or 4, characterised in that it has a control system, which controls the shut-off devices, preferably on the basis of a signal of the measuring means.
  6. Packaging machine (1) in accordance with one of the preceding claims, characterised in that it has a means with which the filling level of the article to be packed (16) in the respective pack cavity is determined.
  7. Packaging machine (1) in accordance with claim 6 only in combination with claim 5, characterised in that the control system of the shut-off device (22) controls on the basis of the respective filling level in the pack cavity.
  8. Packaging machine (1) in accordance with one of the preceding claims, characterised in that the gas supply means (13) and/or the degassing means (17) is a replaceable part that can be replaced when there is a change of format.
  9. Method for producing a packaging, in which a material web (8) is cyclically transported along a packaging machine and a format (15) of a plurality of pack cavities is formed in the material web, the pack cavities are then filled with an article to be packed and then an upper material web (14) is sealed on the pack cavities, wherein gas is evacuated from the pack cavities and a gas exchange is carried out before the pack cavities are sealed, characterised in that gas is respectively supplied to and/or evacuated from the pack cavities of a format individually.
  10. Method in accordance with claim 9, characterised in that the quantity of gas and/or the negative pressure in the respective pack cavity is controlled.
EP12703241.5A 2011-01-27 2012-01-27 Packaging machine for the preparation of individual evacuated packeges Active EP2668102B2 (en)

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DE102011009657 2011-01-27
PCT/EP2012/000376 WO2012100955A1 (en) 2011-01-27 2012-01-27 Packaging machine and process for producing individually evacuated and/or gas-treated packs

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WO2012100955A1 (en) 2012-08-02
DK2668102T3 (en) 2015-04-27
ES2534971T3 (en) 2015-04-30
EP2668102A1 (en) 2013-12-04
US20140020338A1 (en) 2014-01-23
EP2668102B2 (en) 2022-12-14
PL2668102T3 (en) 2015-06-30
ES2534971T5 (en) 2023-04-24

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