EP1714885B1 - Packaging machine - Google Patents

Packaging machine Download PDF

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Publication number
EP1714885B1
EP1714885B1 EP06007814A EP06007814A EP1714885B1 EP 1714885 B1 EP1714885 B1 EP 1714885B1 EP 06007814 A EP06007814 A EP 06007814A EP 06007814 A EP06007814 A EP 06007814A EP 1714885 B1 EP1714885 B1 EP 1714885B1
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EP
European Patent Office
Prior art keywords
perforation
unit
packaging
packaging machine
machine according
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EP06007814A
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German (de)
French (fr)
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EP1714885A1 (en
Inventor
Elmar Eugen Ehrmann
Tieme Jan Slomp
Hans-Joachim Boekstegers
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Multivac Sepp Haggenmueller GmbH and Co KG
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Multivac Sepp Haggenmueller GmbH and Co KG
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Application filed by Multivac Sepp Haggenmueller GmbH and Co KG filed Critical Multivac Sepp Haggenmueller GmbH and Co KG
Priority to DE202006020052U priority Critical patent/DE202006020052U1/en
Priority to EP07008157A priority patent/EP1806290B1/en
Publication of EP1714885A1 publication Critical patent/EP1714885A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/02—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for perforating, scoring, slitting, or applying code or date marks on material prior to packaging
    • 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
    • B65B25/00—Packaging other articles presenting special problems
    • B65B25/02—Packaging agricultural or horticultural products
    • B65B25/04—Packaging fruit or vegetables
    • B65B25/041—Packaging fruit or vegetables combined with their conservation
    • 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

Definitions

  • the invention relates to a packaging machine according to the preamble of claim 1.
  • ethylene accelerates the maturation process and thus shortens the shelf life.
  • carbon dioxide causes undesirable fermentation processes and thus also counteracts the shelf life.
  • Desirable for a good durability of such packaged goods is a constant as possible oxygen content in the atmosphere inside the packs of about 5% with removal of undesirable gases such as carbon dioxide and ethylene.
  • lidding films in such packaging machines are usually obtained in supply rolls from the operator of the packaging machine at the film suppliers.
  • the operator of the packaging machine can accordingly insert a corresponding roll with perforated film, which is subsequently applied to the packaging as a cover film.
  • a packaging machine according to the preamble of claim 1 is known from US-B1-6,441,340 known.
  • the object of the invention is therefore to propose a packaging machine, in which these disadvantages are at least partially eliminated, and in which differently perforated from the same perforation lid films can be produced.
  • Claim 16 defines a corresponding method.
  • a perforation unit is provided for perforating the lidding film prior to connection to the packages to be closed.
  • the perforation is in this case applied in the film area which, when closing and sealing the packages in the area of the packaged goods, i. in the case of shell sealing machines or so-called thermoforming machines above the packing troughs is arranged.
  • a selectively permeable cover film also results in the sealed state of the packs and thus the effects desired according to the invention.
  • An upgrade of such a packaging machine from dense lid film to permeable lid film is also without changing the film supply, i. the film roll, readily by changing the operating mode of the packaging machine possible.
  • a mechanically operating perforation unit is provided.
  • a mechanical perforation unit may, for example, comprise a perforation roller which is unrolled on the film to be perforated.
  • a roller may be provided with needles or the like projections which attach the desired openings in the cover sheet.
  • a Such Perforationshim represents a particularly simple and reliable embodiment.
  • the perforation unit according to the invention comprises a perforation tool whose working position is adjustable or which can be positioned by means of a controllable positioning unit.
  • a freely programmable positioning unit is preferably used for the perforation tool, so that changes in the type of perforation can be achieved by a mere software conversion.
  • both the number of perforation openings and their arrangement can be selected almost freely and so need-based lidding films of different types are produced.
  • Such a positioning unit can be realized for example by means of Linearverstelleinrance, eg in an xy-coordinate arrangement.
  • all types of robotic systems for example, gantry robot or Einarmroboter, etc. can be used.
  • Essential is the freely selectable positioning of the intended perforation tool in the region of the lid film to be perforated.
  • a perforation tool which is variable with regard to the size and / or shape of the perforation openings is also provided. This makes it possible not only to vary the number and arrangement of the perforation openings, but also the size and shape, so that the desired permeability properties are flexible to install in the cover sheet.
  • a perforation tool can in a simple Embodiment turn, find a mechanical tool, such as a cutting or piercing tool use. Changes in the opening size or shape can be made for example by the penetration depth or cut.
  • Another advantageous embodiment of the invention is to use a tool which has a fluid jet, e.g. can produce a jet of water which is directed with sufficient energy on the cover sheet to pierce them.
  • a tool with the aid of a fluid jet, in particular a water jet in particular offers the possibility of mounting extremely small perforation openings, wherein the actual perforation process can still be carried out mechanically and without material changes in the region of the perforation opening.
  • the use of water offers particular advantages in the field of food packaging, since water itself is a foodstuff and can therefore also be safely used in the processing of food packaging.
  • perforation tools would be conceivable, for example, using electromagnetic waves, for example using one or more lasers.
  • This type of tool offers particular advantages in terms of the variability of the perforation openings to be attached. It can be mounted comparatively large, but also extremely small openings with almost freely selectable opening shape in the lidding film.
  • a laser beam and thus its working location via optical deflection and guide elements is adjustable, so that the working of the tool with little effort is adjustable.
  • a perforation by electromagnetic energy input with a corresponding heat generation through energy absorption is to ensure that material changes in the perforation openings are not harmful.
  • a suction unit is provided in order to suck off evaporating material and thus to prevent contamination of the atmosphere in the region of the cover film and in particular also in the region of the packages to be closed.
  • a cooling unit can also be advantageously used in this area in order, on the one hand, to limit the extent of such evaporation and to prevent evaporated material from spreading by condensation.
  • perforation tool it is particularly useful in the field of food packaging to provide an additional cleaning unit to clean the perforated lid film after the perforation process before it is used as a lid film on the packaging. In this way it can be prevented that manufacturing processes adversely affect the required cleanliness of the environment of the food.
  • an inventive Perforation unit or of parts of such a perforation results in a certain type of packaging machines, in which a plurality of packages made contiguous, filled, sealed and only then separated in a cutting station into individual packages.
  • This type of packaging machines are often referred to as so-called thermoforming machines.
  • the packagings produced in one piece can be provided in individual rows and / or columns or tracks.
  • the cutting station is located in the exit region of this packaging machine and usually comprises two blade units, one in the longitudinal direction of the individual columns or tracks and possibly also separates outer edge strips, while a blade unit in the transverse direction, the individual rows cut.
  • These cutting units are adapted in the known construction to a specific format of the packages and to the arrangement of the contiguously produced packages. In the case of format changes, at least part of the cutting units must be replaced in a changeover process. Rounded cuts or the like can be achieved with such cutting units only with correspondingly elaborate cutting tools.
  • a controllable, variable-size cutting unit could avoid such disadvantages.
  • a variable-format controllable and in particular freely programmable cutting unit could be constructed similar to a perforation unit described above.
  • the cutting tool can work with the same functional principle as the perforation tool.
  • the use of a positionable blade, a fluid jet or a laser If such a variable-size cutting unit is provided in combination with a perforation unit according to the invention, the same components, e.g. the same control can be used, resulting in a significant reduction of the effort.
  • the same base unit with pressure pump, etc. are provided for the fluid supply of two tools.
  • a common laser could be used for both processing units.
  • the positioning units for both tools can be selected identically, which reduces the cost of acquisition and operation.
  • the operation of the perforating tool (s) and cutting tool (s) via common components can be either alternating clockwise or parallel.
  • the beam path can be divided so that at least one laser beam from the same laser is available for the cutting unit and for the perforation unit.
  • thermoforming machines could also allow the use of a correspondingly smaller dimensioned base component, for example a weaker laser under a smaller fluid supply unit, given a corresponding alternating operation of the cutting unit and perforation unit.
  • the single FIGURE shows a schematic perspective view of a packaging machine according to the invention.
  • the packaging machine 1 represents a so-called thermoforming machine, which pulls off a film roll 2, the so-called lower web or trough film 3.
  • the trough film 3 is formed in a mold 4 under heat and optionally also pressure to packing troughs 5.
  • the packing troughs 5 are filled manually or automatically with packaged goods 7 in a filling section 6.
  • a cover sheet 8 is withdrawn from a supply roll 9 and placed as a lid on the packing wells 5.
  • the cover sheet 8 is connected to the packing trough 5 and sealed.
  • a cutting unit 11 individual packs produced in the previous production process are separated into individual packs.
  • the lid film 8 After removal from the film roll 9, the lid film 8 is passed through a perforation unit 12.
  • the cover sheet 8 In this perforation unit 12, the cover sheet 8 is provided in a manner not shown in the desired manner, for example, with a certain number and distribution of perforation openings in the order of 20 to 50 ⁇ .
  • Such a perforated lidding film is capable of allowing any carbon dioxide and ethylene produced in the closed packings to pass to the outside environment and at the same time to ensure an oxygen feed into the interior of the pack. This results in particular in the packaging of vegetable foods such as vegetables, Salad, fruit or the like improved durability. Especially in the packaging of asparagus, such a lidding film has proven to be advantageous.
  • the perforation unit includes a laser not shown in detail, which is housed in a laser station 13. Via two light guides 14, 15 both the perforation unit 15 and the cutting unit 11 are supplied with the necessary laser energy.
  • the corresponding optical switching elements are not shown in detail.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Packages (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)

Abstract

The machine has a unit for attachment of a cover foil on a packaging tray filled with a packaging material. A mechanical perforation unit (12) is provided for perforating the cover foil before the connection with the tray, where the perforation is provided in an area that is arranged above the tray after sealing the packing. The unit has a perforation roller. A positionable perforation tool has a controllable positioning unit. An independent claim is also included for a method of manufacturing a packaging of a synclinal package.

Description

Die Erfindung betrifft eine Verpackungsmaschine nach dem Oberbegriff des Anspruchs 1.The invention relates to a packaging machine according to the preamble of claim 1.

Zur Herstellung von Packungen durch Verpacken von Packgut in Verpackungen sind bereits Maschinen im Handel erhältlich, bei denen muldenförmige, mit Packgut gefüllte Verpackungen mit einer Deckelfolie geschlossen und versiegelt werden. Auf diese Weise lassen sich beispielsweise Vakuumverpackungen oder Packungen mit Inertgasfüllung verwirklichen.For the production of packages by packaging of packaged goods in packaging machines are already available in the market, in which trough-shaped, filled with packaged packaging with a lidding foil closed and sealed. In this way, for example, vacuum packaging or packings can be realized with inert gas filling.

Mit der Druckschrift DE 75 33 616 U ist eine Verpackungsmaschine bekannt geworden, bei der die Deckelfolie im Bereich der Randauflage perforiert wird, um die Verpackung in der Versiegelungsstation leichter zu evakuieren. Nach dem Versiegeln der Packungen sind diese jedoch dicht verschlossen, da die Perforationen in den Randstegen im Zwischenbereich zwischen den Packungsmulden angebracht und somit versiegelt werden.With the publication DE 75 33 616 U a packaging machine has become known in which the cover film is perforated in the region of the edge support in order to facilitate the evacuation of the packaging in the sealing station. After sealing the packages, however, these are sealed, since the perforations in the edge webs are mounted in the intermediate area between the packing wells and thus sealed.

Bei der Verpackung bestimmter Lebensmittel, beispielsweise von Obst und Gemüse wie Spargel, Salat oder dergleichen haben geschlossene Verpackungen den Nachteil, dass beim Reifeprozess in der Verpackung Gase, insbesondere Ethylen und Kohlendioxid entstehen, die die Haltbarkeit beeinträchtigen.When packaging certain foods, such as fruits and vegetables such as asparagus, lettuce or the like closed packaging have the disadvantage that the maturation process in the packaging gases, especially ethylene and carbon dioxide, which affect the durability.

Insbesondere Ethylen beschleunigt den Reifungsvorgang und verkürzt demnach die Haltbarkeit. Kohlendioxid verursacht unter anderem unerwünschte Gärungsprozesse und wirkt somit auch der Haltbarkeit entgegen. Wünschenswert für eine gute Haltbarkeit von derartigem Packgut ist ein möglichst gleichbleibender Sauerstoffgehalt in der Atmosphäre im Inneren der Packungen von ungefähr 5 % unter Entfernung unerwünschter Gase wie Kohlendioxid und Ethylen.In particular, ethylene accelerates the maturation process and thus shortens the shelf life. Among other things, carbon dioxide causes undesirable fermentation processes and thus also counteracts the shelf life. Desirable for a good durability of such packaged goods is a constant as possible oxygen content in the atmosphere inside the packs of about 5% with removal of undesirable gases such as carbon dioxide and ethylene.

Zu diesem Zweck ist man dazu übergegangen, entsprechend perforierte Folien zu verwenden. Die Deckelfolien bei solchen Verpackungsmaschinen werden üblicherweise in Vorratsrollen von dem Betreiber der Verpackungsmaschine bei den Folienanbietern bezogen. Zur Herstellung einer Verpackung mit selektiv permeabler Deckelfolie kann demnach der Betreiber der Verpackungsmaschine eine entsprechende Rolle mit perforierter Folie einlegen, die als Deckelfolie anschließend auf die Verpackung aufgebracht wird.For this purpose, one has begun to use corresponding perforated films. The lidding films in such packaging machines are usually obtained in supply rolls from the operator of the packaging machine at the film suppliers. For the production of a packaging with a selectively permeable cover film, the operator of the packaging machine can accordingly insert a corresponding roll with perforated film, which is subsequently applied to the packaging as a cover film.

Diese Vorgehensweise ist sehr aufwändig. Einerseits muss ein Folienhersteller unterschiedliche Arten von Folien herstellen und lagern. Auf der anderen Seite muss der Betreiber der Verpackungsmaschine die unterschiedlichen, teilweise sehr kostenträchtigen Folienarten beziehen und gegebenenfalls bevorraten. Ein Wechsel der Verpackungsart bei einer Änderung des zu verpackenden Packguts bedingt zugleich stets auch eine Umrüstung mit einer passenden Deckelfolie.This procedure is very complicated. On the one hand, a film manufacturer must produce and store different types of films. On the other hand, the operator of the packaging machine must purchase the different, sometimes very expensive types of foil and store them if necessary. A change of the type of packaging with a change in the packaged goods to be packaged at the same time always requires a conversion with a matching lidding film.

Eine Verpackungsmaschine gemäß dem Oberbegriff des Anspruchs 1 ist aus der US-B1-6 441 340 bekannt.A packaging machine according to the preamble of claim 1 is known from US-B1-6,441,340 known.

Aufgabe der Erfindung ist es daher, eine Verpackungsmaschine vorzuschlagen, bei der diese Nachteile zumindest teilweise entfallen, und bei der von der gleichen Perforationseinheit unterschiedlich perforierte Deckelfolien herstellbar sind.The object of the invention is therefore to propose a packaging machine, in which these disadvantages are at least partially eliminated, and in which differently perforated from the same perforation lid films can be produced.

Diese Aufgabe wird ausgehend von einer Verpackungsmaschine gemäß dem Oberbegriff des Anspruchs 1 durch dessen kennzeichnende Merkmale erreicht. Anspruch 16 definiert ein entsprechendes Verfahren.This object is achieved on the basis of a packaging machine according to the preamble of claim 1 by its characterizing features. Claim 16 defines a corresponding method.

Durch die in den Unteransprüchen genannten Maßnahmen sind vorteilhafte Ausführungen und Weiterbildungen der Erfindung möglich.The measures mentioned in the dependent claims advantageous embodiments and developments of the invention are possible.

Bei der erfindungsgemäßen Verpackungsmaschine ist eine Perforationseinheit zum Perforieren der Deckelfolie vor der Verbindung mit den zu schließenden Verpackungen vorgesehen. Die Perforation wird dabei in dem Folienbereich angebracht, der beim Schließen und Versiegeln der Verpackungen im Bereich des Packguts, d.h. im Falle von Schalenversiegelungsmaschinen oder sogenannten Tiefziehmaschinen oberhalb der Packungsmulden angeordnet wird. Dadurch ergibt sich bei einer derart perforierten Folie eine selektivpermeable Deckelfolie auch im versiegelten Zustand der Packungen und somit die erfindungsgemäß gewünschten Wirkungen.In the case of the packaging machine according to the invention, a perforation unit is provided for perforating the lidding film prior to connection to the packages to be closed. The perforation is in this case applied in the film area which, when closing and sealing the packages in the area of the packaged goods, i. in the case of shell sealing machines or so-called thermoforming machines above the packing troughs is arranged. As a result, in the case of such a perforated film, a selectively permeable cover film also results in the sealed state of the packs and thus the effects desired according to the invention.

Auf diese Weise ist es möglich, die gleiche Deckelfolie, die bislang für dicht zu versiegelnde Verpackungen verwendet wurde, auch zum Herstellen von selektiv permeablen Membranen zu verwenden. Dadurch entfällt die separate Anschaffung und auch eine Bevorratung perforierter Folien.In this way it is possible to use the same lidding film previously used for tightly sealed packages also for making selectively permeable membranes. This eliminates the separate purchase and also a storage of perforated films.

Eine Umrüstung einer solchen Verpackungsmaschine von dichter Deckelfolie zu permeabler Deckelfolie ist zudem ohne Wechsel des Folienvorrats, d.h. der Folienrolle, ohne weiteres durch Änderung des Betriebsmodus der Verpackungsmaschine möglich.An upgrade of such a packaging machine from dense lid film to permeable lid film is also without changing the film supply, i. the film roll, readily by changing the operating mode of the packaging machine possible.

In einer besonderen Ausführungsform der Erfindung wird eine mechanisch arbeitende Perforationseinheit vorgesehen. Eine solche mechanische Perforationseinheit kann beispielsweise eine Perforationswalze umfassen, die auf der zu perforierenden Folie abgerollt wird. Eine solche Walze kann mit Nadeln oder dergleichen Vorsprünge versehen sein, die die gewünschten Öffnungen in der Deckelfolie anbringt. Eine solche Perforationseinheit stellt eine besonders einfache und zuverlässige Ausführungsform dar.In a particular embodiment of the invention, a mechanically operating perforation unit is provided. Such a mechanical perforation unit may, for example, comprise a perforation roller which is unrolled on the film to be perforated. Such a roller may be provided with needles or the like projections which attach the desired openings in the cover sheet. A Such Perforationseinheit represents a particularly simple and reliable embodiment.

Die erfindungsgemäße Perforationseinheit umfasst ein Perforationswerkzeug, dessen Arbeitsort verstellbar oder das mittels einer steuerbaren Positioniereinheit positionierbar ist. Dadurch können unterschiedlich perforierte Deckelfolien von der gleichen Perforationseinheit durch Änderung des Betriebsmodus hergestellt werden. Bevorzugt wird hierbei eine frei programmierbare Positioniereinheit für das Perforationswerkzeug verwendet, so dass Änderungen in der Art der Perforation durch eine reine Softwareumstellung zu erreichen sind. Dabei können sowohl die Anzahl der Perforationsöffnungen sowie deren Anordnung nahezu frei gewählt und so bedarfsgerechte Deckelfolien unterschiedlicher Art hergestellt werden.
Eine solche Positioniereinheit kann beispielsweise mittels Linearverstelleinheiten, z.B. in einer xy-Koordinatenanordnung realisiert werden. Für diese Anwendung könne jedoch auch alle Arten von Robotersystemen, beispielsweise auch Portalroboter oder Einarmroboter, usw. Verwendung finden. Wesentlich ist die frei wählbare Positionierung des vorgesehenen Perforationswerkzeuges im Bereich der zu perforierenden Deckelfolie.The perforation unit according to the invention comprises a perforation tool whose working position is adjustable or which can be positioned by means of a controllable positioning unit. As a result, differently perforated lidding films can be produced by the same perforation unit by changing the operating mode. In this case, a freely programmable positioning unit is preferably used for the perforation tool, so that changes in the type of perforation can be achieved by a mere software conversion. In this case, both the number of perforation openings and their arrangement can be selected almost freely and so need-based lidding films of different types are produced.
Such a positioning unit can be realized for example by means of Linearverstelleinheiten, eg in an xy-coordinate arrangement. For this application, however, all types of robotic systems, for example, gantry robot or Einarmroboter, etc. can be used. Essential is the freely selectable positioning of the intended perforation tool in the region of the lid film to be perforated.

In einer Weiterbildung der Erfindung wird zudem ein hinsichtlich der Größe und/oder Form der Perforationsöffnungen variables Perforationswerkzeug vorgesehen. Hierdurch ist es möglich, nicht nur die Anzahl und Anordnung der Perforationsöffnungen zu variieren, sondern auch die Größe und Form, so dass die gewünschten Permeabilitätseigenschaften in der Deckelfolie flexibel anzubringen sind.In a development of the invention, a perforation tool which is variable with regard to the size and / or shape of the perforation openings is also provided. This makes it possible not only to vary the number and arrangement of the perforation openings, but also the size and shape, so that the desired permeability properties are flexible to install in the cover sheet.

Als Perforationswerkzeug kann in einer einfachen Ausführungsvariante wiederum ein mechanisches Werkzeug, z.B. ein Schneid- oder Stechwerkzeug Verwendung finden. Änderungen in der Öffnungsgröße oder -form können dabei beispielsweise durch die Eindringtiefe oder Schnittführung vorgenommen werden.As a perforation tool can in a simple Embodiment turn, find a mechanical tool, such as a cutting or piercing tool use. Changes in the opening size or shape can be made for example by the penetration depth or cut.

Eine anderen vorteilhafte Ausführungsform der Erfindung besteht darin, ein Werkzeug zu verwenden, das eine Fluidstrahl, z.B. einen Wasserstrahl erzeugen kann, der mit einer ausreichenden Energie auf die Deckelfolie gerichtet wird, um diese zu durchstoßen. Ein solches Werkzeug unter Zuhilfenahme eines Fluidstrahls, insbesondere Wasserstrahls bietet insbesondere die Möglichkeit, extrem kleine Perforationsöffnungen anzubringen, wobei der eigentliche Perforationsvorgang nach wie vor mechanisch und ohne Materialveränderungen im Bereich der Perforationsöffnung durchführbar ist. Die Verwendung von Wasser bietet darüber hinaus im Bereich der Nahrungsmittelverpackung besondere Vorteile, da Wasser selbst ein Nahrungsmittel ist und somit auch im Bereich der Bearbeitung von Nahrungsmittelverpackungen unbedenklich eingesetzt werden kann.Another advantageous embodiment of the invention is to use a tool which has a fluid jet, e.g. can produce a jet of water which is directed with sufficient energy on the cover sheet to pierce them. Such a tool with the aid of a fluid jet, in particular a water jet, in particular offers the possibility of mounting extremely small perforation openings, wherein the actual perforation process can still be carried out mechanically and without material changes in the region of the perforation opening. Moreover, the use of water offers particular advantages in the field of food packaging, since water itself is a foodstuff and can therefore also be safely used in the processing of food packaging.

Eine andere Art von Perforationswerkzeugen wäre beispielsweise unter Einsatz von elektromagnetischen Wellen, beispielsweise unter Einsatz eines oder mehrerer Laser denkbar. Diese Art Werkzeuge bietet besondere Vorteile im Hinblick auf die Variabilität der anzubringenden Perforationsöffnungen. Es können vergleichsweise große, aber auch extrem kleine Öffnungen mit nahezu frei wählbarer Öffnungsform in der Deckelfolie angebracht werden. Außerdem ist ein Laserstrahl und somit dessen Arbeitsort auch über optische Ablenk- und Leitelemente verstellbar, so dass der Arbeitsort des Werkzeugs mit wenig Aufwand verstellbar ist. Andererseits ist bei einer Perforation durch elektromagnetischen Energieeintrag, der mit einer entsprechenden Wärmeentwicklung durch Energieabsorption verbunden ist, darauf zu achten, dass Materialveränderungen im Bereich der Perforationsöffnungen sich nicht schädlich auswirken.Another type of perforation tools would be conceivable, for example, using electromagnetic waves, for example using one or more lasers. This type of tool offers particular advantages in terms of the variability of the perforation openings to be attached. It can be mounted comparatively large, but also extremely small openings with almost freely selectable opening shape in the lidding film. In addition, a laser beam and thus its working location via optical deflection and guide elements is adjustable, so that the working of the tool with little effort is adjustable. On the other hand, in a perforation by electromagnetic energy input, with a corresponding heat generation through energy absorption is to ensure that material changes in the perforation openings are not harmful.

In einer bestimmten Ausführungsform der Erfindung wird daher eine Absaugeinheit vorgesehen, um abdampfendes Material abzusaugen und somit eine Kontamination der Atmosphäre im Bereich der Deckelfolie und insbesondere auch im Bereich der zu verschließenden Verpackungen zu verhindern.In a specific embodiment of the invention, therefore, a suction unit is provided in order to suck off evaporating material and thus to prevent contamination of the atmosphere in the region of the cover film and in particular also in the region of the packages to be closed.

Auch eine Kühleinheit kann in diesem Bereich vorteilhaft eingesetzt werden, um zum einen das Ausmaß derartiger Verdampfung zu begrenzen und verdampftes Material durch Kondensation an der Ausbreitung zu hindern.A cooling unit can also be advantageously used in this area in order, on the one hand, to limit the extent of such evaporation and to prevent evaporated material from spreading by condensation.

Unabhängig von der Art des Perforationswerkzeuges ist es vor allem im Bereich der Nahrungsmittelverpackungen sinnvoll, eine zusätzliche Reinigungseinheit vorzusehen, um die perforierte Deckelfolie nach dem Perforationsvorgang zu reinigen, bevor sie als Deckelfolie auf der Verpackung verwendet wird. Auf diese Weise kann verhindert werden, dass Herstellungsprozesse sich nachteilig auf die erforderliche Reinhaltung der Umgebung der Nahrungsmittel auswirkt.Regardless of the type of perforation tool, it is particularly useful in the field of food packaging to provide an additional cleaning unit to clean the perforated lid film after the perforation process before it is used as a lid film on the packaging. In this way it can be prevented that manufacturing processes adversely affect the required cleanliness of the environment of the food.

Neben den oben angeführten konkreten Ausführungen zur Verwirklichung einer Verpackungsmaschine mit Perforationseinheit sind alle Arten von Perforationsmöglichkeiten erfindungsgemäß verwendbar. Wesentlich ist die Integration der Perforationseinheit in die Verpackungsmaschine, um unterschiedliche Deckelfolien ausgehend von einem Ausgangsmaterial für unterschiedliche Verpackungsarten unmittelbar in der Verpackungsmaschine herstellen zu können.In addition to the above-mentioned specific embodiments for the realization of a packaging machine with perforation unit all types of Perforationsmöglichkeiten are used in the invention. The integration of the perforation unit into the packaging machine is essential in order to be able to produce different lid films directly from a starting material for different types of packaging directly in the packaging machine.

Eine weitere vorteilhafte Nutzung einer erfindungsgemäßen Perforationseinheit bzw. von Teilen einer solchen Perforationseinheit ergibt sich bei einer bestimmten Art von Verpackungsmaschinen, bei denen eine Mehrzahl von Verpackungen zusammenhängend hergestellt, gefüllt, versiegelt und erst danach in einer Schneidstation in einzelne Verpackungen getrennt werden. Diese Art von Verpackungsmaschinen werden häufig als sogenannten Tiefziehmaschinen bezeichnet. Die zusammenhängend am Stück hergestellten Verpackungen können dabei in einzelnen Reihen und/oder Spalten bzw. Spuren bereitgestellt werden. Die Schneidstation befindet sich im Ausgangsbereich dieser Verpackungsmaschine und umfasst in der Regel zwei Messereinheiten, eine die in Längsrichtung die einzelnen Spalten oder Spuren und gegebenenfalls auch äußere Randstreifen trennt, während eine Messereinheit in Querrichtung die einzelnen Reihen ausschneidet.Another advantageous use of an inventive Perforation unit or of parts of such a perforation results in a certain type of packaging machines, in which a plurality of packages made contiguous, filled, sealed and only then separated in a cutting station into individual packages. This type of packaging machines are often referred to as so-called thermoforming machines. The packagings produced in one piece can be provided in individual rows and / or columns or tracks. The cutting station is located in the exit region of this packaging machine and usually comprises two blade units, one in the longitudinal direction of the individual columns or tracks and possibly also separates outer edge strips, while a blade unit in the transverse direction, the individual rows cut.

Diese Schneideinheiten sind in der bekannten Bauweise an ein bestimmtes Format der Packungen und an die Anordnung der zusammenhängend hergestellten Packungen angepasst. Bei Formatänderungen muss wenigstens ein Teil der Schneideinheiten in einem Umrüstvorgang ausgetauscht werden. Abgerundete Schnitte oder dergleichen sind mit solchen Schneideinheiten nur mit entsprechend aufwändigen Schneidwerkzeugen zu erzielen.These cutting units are adapted in the known construction to a specific format of the packages and to the arrangement of the contiguously produced packages. In the case of format changes, at least part of the cutting units must be replaced in a changeover process. Rounded cuts or the like can be achieved with such cutting units only with correspondingly elaborate cutting tools.

Eine ansteuerbare, formatvariable Schneideinheit könnte derartige Nachteile vermeiden. Eine formatvariable steuerbare und insbesondere frei programmierbare Schneideinheit könnte dabei ähnlich wie eine oben beschriebene Perforationseinheit aufgebaut werden.A controllable, variable-size cutting unit could avoid such disadvantages. A variable-format controllable and in particular freely programmable cutting unit could be constructed similar to a perforation unit described above.

Insbesondere empfiehlt es sich dabei, ein frei positionierbares Schneidwerkzeug mit einer entsprechenden Positioniereinheit vorzusehen.In particular, it is advisable to provide a freely positionable cutting tool with a corresponding positioning.

Das Schneidwerkzeug kann dabei mit dem gleichen Funktionsprinzip arbeiten, wie das Perforationswerkzeug. In Frage kommt beispielsweise bei beiden Werkzeugen die Verwendung eines positionierbaren Messers, eines Fluidstrahls oder eines Lasers. Sofern nun eine derartige formatvariable Schneideinheit in Kombination mit einer erfindungsgemäßen Perforationseinheit vorgesehen wird, so können je nach Ausführungsform zumindest teilweise die gleichen Komponenten, z.B. die gleiche Steuerung verwendet werden, wodurch sich eine deutliche Reduzierung des Aufwands ergibt. So kann beispielsweise bei Verwendung von Fluidstrahl-, insbesondere Wasserstrahlwerkzeugen die gleiche Basiseinheit mit Druckpumpe, usw. für die Fluidversorgung zweier Werkzeuge bereitgestellt werden. Im Falle eines Lasereinsatzes könnte beispielsweise ein gemeinsamer Laser für beide Bearbeitungseinheiten verwendet werden. Die Positioniereinheiten für beide Werkzeuge können identisch ausgewählt werden, wodurch sich der Aufwand in der Anschaffung und im Betrieb vermindert.The cutting tool can work with the same functional principle as the perforation tool. In question, for example, in both tools, the use of a positionable blade, a fluid jet or a laser. If such a variable-size cutting unit is provided in combination with a perforation unit according to the invention, the same components, e.g. the same control can be used, resulting in a significant reduction of the effort. Thus, for example, when using fluid jet, in particular water jet tools the same base unit with pressure pump, etc. are provided for the fluid supply of two tools. In the case of laser use, for example, a common laser could be used for both processing units. The positioning units for both tools can be selected identically, which reduces the cost of acquisition and operation.

Der Betrieb des bzw. der Perforationswerkzeuge und des bzw. der Schneidwerkzeuge über gemeinsame Komponenten, z.B. eine gemeinsame Basisstation kann dabei entweder alternierend taktweise oder aber parallel erfolgen. Im Falle der Verwendung eines gemeinsamen Lasers kann beispielsweise der Strahlengang geteilt werden, so dass je wenigstens ein Laserstrahl aus dem gleichen Laser für die Schneideinheit und für die Perforationseinheit zur Verfügung steht.The operation of the perforating tool (s) and cutting tool (s) via common components, e.g. a common base station can be either alternating clockwise or parallel. In the case of using a common laser, for example, the beam path can be divided so that at least one laser beam from the same laser is available for the cutting unit and for the perforation unit.

Ein taktweiser Betrieb, der der üblichen Betriebsart der genannten Tiefziehmaschinen entspricht, könnte darüber hinaus bei entsprechender alternierender Arbeitsweise der Schneideinheit und Perforationseinheit die Verwendung einer entsprechend kleiner dimensionierten Basiskomponente, beispielsweise eines schwächeren Lasers unter einer kleineren Fluidversorgungseinheit ermöglichen.A cyclical operation, which corresponds to the usual operating mode of said thermoforming machines, could also allow the use of a correspondingly smaller dimensioned base component, for example a weaker laser under a smaller fluid supply unit, given a corresponding alternating operation of the cutting unit and perforation unit.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird anhand der Figuren nachfolgend näher erläutert.An embodiment of the invention is illustrated in the drawing and will be explained in more detail with reference to FIGS.

Die einzige Figur zeigt eine schematische perspektivische Darstellung einer erfindungsgemäßen Verpackungsmaschine.The single FIGURE shows a schematic perspective view of a packaging machine according to the invention.

Die Verpackungsmaschine 1 stellt eine sogenannte Tiefziehmaschine dar, die aus einer Folienrolle 2 die sogenannte Unterbahn oder auch Muldenfolie 3 abzieht. Die Muldenfolie 3 wird in einem Formwerkzeug 4 unter Wärme und gegebenenfalls auch Druckeinwirkung zu Packungsmulden 5 geformt. Die Packungsmulden 5 werden in einer Füllstrecke 6 manuell oder automatisch mit Packgut 7 gefüllt. Eine Deckelfolie 8 wird von einer Vorratsrolle 9 abgezogen und als Deckel auf die Packungsmulden 5 aufgelegt. In einem Siegelwerkzeug 10 wird die Deckfolie 8 mit der Packungsmulde 5 verbunden und versiegelt. In einer Schneideinheit 11 werden einzelne, im bisherigen Herstellungsprozess zusammenhängend gefertigten Packungen zu Einzelpackungen abgetrennt.The packaging machine 1 represents a so-called thermoforming machine, which pulls off a film roll 2, the so-called lower web or trough film 3. The trough film 3 is formed in a mold 4 under heat and optionally also pressure to packing troughs 5. The packing troughs 5 are filled manually or automatically with packaged goods 7 in a filling section 6. A cover sheet 8 is withdrawn from a supply roll 9 and placed as a lid on the packing wells 5. In a sealing tool 10, the cover sheet 8 is connected to the packing trough 5 and sealed. In a cutting unit 11, individual packs produced in the previous production process are separated into individual packs.

Nach dem Abzug von der Folienrolle 9 wird die Deckelfolie 8 durch eine Perforationseinheit 12 geführt. In dieser Perforationseinheit 12 wird auf nicht näher dargestellte Weise die Deckelfolie 8 in der gewünschten Weise beispielsweise mit einer bestimmte Anzahl und Verteilung von Perforationsöffnungen in der Größenordnung von 20 bis 50 µ versehen.After removal from the film roll 9, the lid film 8 is passed through a perforation unit 12. In this perforation unit 12, the cover sheet 8 is provided in a manner not shown in the desired manner, for example, with a certain number and distribution of perforation openings in the order of 20 to 50 μ.

Eine derart perforierte Deckelfolie ist in der Lage, etwaiges, in der geschlossenen Packungen entstehendes Kohlendioxid und Ethylen an die Außenumgebung durchzulassen und zugleich eine Sauerstoffzufuhr ins Innere der Packung zu gewährleisten. Hierdurch ergibt sich insbesondere bei der Verpackung von pflanzlichen Nahrungsmitteln wie Gemüse, Salat, Obst oder dergleichen eine verbesserte Haltbarkeit. Besonders bei der Verpackung von Spargel hat sich eine derartige Deckelfolie als vorteilhaft erwiesen.Such a perforated lidding film is capable of allowing any carbon dioxide and ethylene produced in the closed packings to pass to the outside environment and at the same time to ensure an oxygen feed into the interior of the pack. This results in particular in the packaging of vegetable foods such as vegetables, Salad, fruit or the like improved durability. Especially in the packaging of asparagus, such a lidding film has proven to be advantageous.

In der dargestellten Ausführungsform umfasst die Perforationseinheit einen nicht näher dargestellten Laser, der in einer Laserstation 13 untergebracht ist. Über zwei Lichtleiter 14, 15 werden sowohl die Perforationseinheit 15 als auch die Schneideinheit 11 mit der notwendigen Laserenergie versorgt. Die entsprechenden optischen Schaltelemente sind nicht näher dargestellt. Ebenso wenig sind die zugehörigen Werkzeuge (Perforationswerkzeuge, Schneidwerkzeuge) und Positioniereinheiten eingezeichnet. Diese Komponenten können analog zu handelsüblichen Laserschneidvorrichtungen ausgestaltet und mit entsprechenden Steuerungen, insbesondere programmierbaren Steuerungen versehen werden.In the illustrated embodiment, the perforation unit includes a laser not shown in detail, which is housed in a laser station 13. Via two light guides 14, 15 both the perforation unit 15 and the cutting unit 11 are supplied with the necessary laser energy. The corresponding optical switching elements are not shown in detail. Nor are the associated tools (perforation tools, cutting tools) and positioning units drawn. These components can be configured analogously to commercially available laser cutting devices and provided with appropriate controls, in particular programmable controllers.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Verpackungsmaschinepackaging machine
22
Folienrollefilm roll
33
Muldenfoliepan sheet
44
Formwerkzeugmold
55
Packungsmuldenpacking troughs
66
Füllstreckefilling section
77
Packgutpackaged goods
88th
Deckelfoliecover film
99
Folienrollefilm roll
1010
Siegelwerkzeugsealing tool
1111
Schneideinheitcutting unit
1212
Perforationseinheitperforation
1313
Laserstationlaser station
1414
Lichtleiteroptical fiber
1515
Lichtleiteroptical fiber

Claims (16)

  1. Packaging machine for producing packages from tray-like packaging filled with packaged product with a unit for applying a cover film (8) onto packaging trays (5) filled with product, wherein a perforation unit (12) is provided for perforating the cover film (8) prior to joining with the packaging trays (5), whereby the perforation in the cover film (8) is provided at least in the section arranged after sealing the packaging above the packaging trays (5), characterised in that a positionable perforation tool with a controllable positioning unit or a perforation tool with an adjustable working position is provided .
  2. Packaging machine according to claim 1, characterised in that a mechanical perforation unit (12) is provided.
  3. Packaging machine according to one of the preceding claims, characterised in that the perforation unit (12) comprises a perforation roller.
  4. Packaging machine according to one of the preceding claims, characterised in that as a positioning unit an xy-axis system with at least two linear adjusting units is provided.
  5. Packaging machine according to one of the preceding claims, characterised in that a robot is provided as the positioning unit.
  6. Packaging machine according to one of the preceding claims, characterised in that with respect to the size and shape of the perforation openings a variably adjustable perforation tool is provided.
  7. Packaging machine according to one of the preceding claims, characterised in that a fluid jet tool is provided.
  8. Packaging machine according to one of the preceding claims, characterised in that a water jet tool is provided.
  9. Packaging machine according to one of the preceding claims, characterised in that an electromagnetic perforation tool is provided.
  10. Packaging machine according to one of the preceding claims, characterised in that a laser tool is provided.
  11. Packaging machine according to one of the preceding claims, characterised in that a suction unit is provided.
  12. Packaging machine according to one of the preceding claims, characterised in that a cooling unit is provided.
  13. Packaging machine according to one of the preceding claims, characterised in that a cleaning unit is provided for cleaning the perforated cover film.
  14. Packaging machine according to one of the preceding claims, characterised in that a cutting unit (11) is provided for cutting individual packages from a set of interconnected packages, which comprises a cutting tool which can be positioned by a controllable positioning unit.
  15. Packaging machine according to claim 14, characterised in that the cutting unit (11) and the perforation unit (12) comprise at least one common control and/or supply unit.
  16. Method for producing packages consisting of tray-like packaging (5) filled with packaged product onto which a cover film (8) is applied, whereby the cover film (8) is perforated prior to joining onto the packaging trays (5), whereby the perforation of the cover film (8) is provided at least in the section arranged after the sealing of the packaging above the packaging trays (5), characterised in that a positionable perforation tool with a controllable positioning unit or a perforation tool with an adjustable working position is provided.
EP06007814A 2005-04-19 2006-04-13 Packaging machine Active EP1714885B1 (en)

Priority Applications (2)

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DE202006020052U DE202006020052U1 (en) 2005-04-19 2006-04-13 packaging machine
EP07008157A EP1806290B1 (en) 2005-04-19 2006-04-13 Packaging machine

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DE102005018249 2005-04-19

Related Child Applications (1)

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Publication number Priority date Publication date Assignee Title
DE102007013698A1 (en) 2006-12-22 2008-06-26 Multivac Sepp Haggenmüller Gmbh & Co. Kg packaging machine
GB2453590A (en) * 2007-10-12 2009-04-15 Sharp Interpack Ltd Packaging tray with lid having apertures
EP2179824A1 (en) 2008-10-23 2010-04-28 Wardenburg Malgo Engineering B.V. Device for punching series of microperforations in film material
DE102009017993A1 (en) * 2009-04-21 2010-11-04 Multivac Sepp Haggenmüller Gmbh & Co. Kg Packaging machine i.e. packing tray, for manufacturing sealable packings for e.g. fruit, has perforation unit for perforating lower foil, where perforation is provided in area of foil to form packaging body after closing
CN108190080B (en) * 2018-02-08 2024-09-24 瑞安市宏泰机械科技有限公司 Four-side packaging line

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7533616U (en) * 1976-03-18 Hermann Waldner Kg, 7988 Wangen Device for perforating material webs
BE757629A (en) 1969-10-17 1971-04-01 Afrikanische Frucht Compagnie PACKAGING FOR BANANAS AS WELL AS THE PROCESS AND INSTALLATION FOR PACKING THEM
GB2200618B (en) 1987-02-19 1989-06-14 Michael Greengrass Controlled ripening of produce and fruits
US5477660A (en) * 1994-11-01 1995-12-26 Multivac Sepp Haggenmuller Kg Process and apparatus for maximizing vacuum packaging machine cycle rate
US20030185947A1 (en) * 1997-03-13 2003-10-02 Garwood Anthony J.M. Apparatus for biaxially stretching a web of overwrapping material
US6441340B1 (en) 1999-05-04 2002-08-27 Elizabeth Varriano-Marston Registered microperforated films for modified/controlled atmosphere packaging
NL1015870C2 (en) * 2000-08-03 2002-02-05 Backus Sormac Method for packaging perishable products.
FR2873992B1 (en) * 2004-08-05 2007-10-12 Perle Du Sud PROCESS AND DEVICE FOR PACKAGING FRESH VEGETABLE PRODUCTS

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DE202006020052U1 (en) 2007-11-08
DE502006001296D1 (en) 2008-09-25
ES2312060T3 (en) 2009-02-16
EP1714885A1 (en) 2006-10-25
ATE404437T1 (en) 2008-08-15
EP1806290A1 (en) 2007-07-11
EP1806290B1 (en) 2009-06-24
DE502006004058D1 (en) 2009-08-06
DE102006017887A1 (en) 2006-10-26
ATE434568T1 (en) 2009-07-15
ES2330051T3 (en) 2009-12-03

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