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EP3319881B1 - Packaging machine having residual strip disposal - Google Patents

Packaging machine having residual strip disposal Download PDF

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Publication number
EP3319881B1
EP3319881B1 EP16736172.4A EP16736172A EP3319881B1 EP 3319881 B1 EP3319881 B1 EP 3319881B1 EP 16736172 A EP16736172 A EP 16736172A EP 3319881 B1 EP3319881 B1 EP 3319881B1
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EP
European Patent Office
Prior art keywords
cross
film web
film
strip
cutter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16736172.4A
Other languages
German (de)
French (fr)
Other versions
EP3319881A1 (en
Inventor
Bernard Martin
Ernst-Walter Schmitt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEA Food Solutions Germany GmbH
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GEA Food Solutions Germany GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GEA Food Solutions Germany GmbH filed Critical GEA Food Solutions Germany GmbH
Publication of EP3319881A1 publication Critical patent/EP3319881A1/en
Application granted granted Critical
Publication of EP3319881B1 publication Critical patent/EP3319881B1/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
    • 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 packaging in which a film web is transported along a transport direction, in particular intermittently, and depressions are formed in the film web in a forming station, which are filled with a packaging material and closed with a cover film and then with at least one Cross cutter through a cross section, ie be separated by a cut transverse to the transport direction of the film web.
  • the present invention also relates to a packaging machine and a transverse punch.
  • the object is achieved with a method for producing a packaging, in which a film web is transported along a transport direction, in particular intermittently, and troughs are formed in the film web in a forming station, which are filled with a packaging material and closed with a cover film and then with at least a cross cutter through a cross section, a relief recess and / or an embossing being provided in a residual strip in the area of the cross section and / or the temperature of the residual strip being increased.
  • the present invention relates to a method which is carried out on a packaging machine.
  • a packaging machine is in particular a so-called thermoformer on which plastic films are usually processed.
  • thermoformer With the thermoformer, a lower web of film is unrolled from a supply roll and, in particular, transported intermittently along the packaging machine.
  • a packaging trough is first formed in the lower film web, which is then filled with an item to be packaged, in particular a foodstuff.
  • the packaging tray is then closed in a sealing station with one or more upper films that are sealed to the lower film.
  • the packaging produced is separated by a cross cutter cutting through the lower and upper webs of film with a cut across the direction of transport. This section is referred to below as the “cross section”.
  • the packaging machine also has one or more longitudinal cutters, which cut through the packaging in the longitudinal direction, ie parallel to the transport direction of the film web.
  • the edge strip is fed to a shredding device, which divides it into smaller pieces or fed to a suction device, which transports it to a waste container and collects it there.
  • the edge strip is mechanically stressed, in particular stressed by tensile forces.
  • one or more relief recess (s) or one or more embossments are provided in the remaining strip in the area of the cross section and / or the temperature of the edge strip is increased.
  • the method according to the invention has the advantage that the residual strip tears less often when it is disposed of, in which it is subjected to mechanical stress, in particular due to tension.
  • the recess / embossing reduces the progress of a crack that occurs. This considerably increases the availability of the packaging machine and there is no damage to the packaging machine due to torn off residual strips.
  • the remaining strip is heated, in particular in the area of the cross section, in such a way that the elasticity of the material of the remaining strip is increased.
  • the remaining strip is not heated until the so-called glass temperature is reached.
  • the temperature is 10-80 ° K based on the temperature of the packaging immediately after it has been separated.
  • the relief recess is preferably made by a cut or a punching.
  • a relief recess is preferably in front of and / or after and / or at least in sections at the same height as the cross section, in each case based on the Transport direction of the film web, provided.
  • the shape of the relief recess is preferably linear, the line particularly preferably extending parallel to the transport direction of the film web.
  • the corners and / or at least one side of the relief recess are preferably provided with a radius in order to reduce the notch effect.
  • an embossing is provided in the remaining strip, i.e.
  • the flat shape of the remaining strip is changed in particular by plastic deformation.
  • An embossing is preferably provided before and / or after and / or at least in sections at the same height as the cross section, in each case based on the transport direction of the film web.
  • the relief recess and / or embossing is part of the cross section which cuts through the film web outside of the residual strip.
  • the shape of the cross cutter is then preferably enlarged so that it extends more strongly into the remaining strips.
  • at least one radius of the cross cutter is enlarged in the remaining strip.
  • the relief recess preferably extends at least through the entire thickness of the lower film web, particularly preferably also through the upper film web.
  • the edge strip in particular has recesses through which air is sucked out of the packaging trays of a format and / or an exchange gas is blown into the packaging trays .
  • These gassing recesses are preferably only located in the lower web of film and are preferably introduced into the web of film, for example by punching, upstream of the sealing station in relation to the transport direction of the web of film.
  • the shape and / or arrangement of the gassing recesses are designed in such a way that they at the same time at least reduce the crack propagation in the remaining strip, in particular the edge strip.
  • the gassing recesses are arranged so that they are upstream, at the same height and / or downstream of a cross-section, each based on the transport direction of the film web and also in the area, preferably in the immediate vicinity of / to a cross-section, the gassing recesses, which at the same time also reduce the crack propagation in the cross-section, a few cycles before the cross-section is attached to the Foil web are introduced.
  • the shape and / or size and / or position of these recesses is designed in such a way that gas exchange occurs and the progress of cracks is reduced.
  • Another object of the present invention is a packaging machine with a forming station that forms wells in the film web, a filling station in which the wells are filled with a packaged goods and with a sealing station that seals an upper film to the film web and which has a cross cutter, which separates the packaging, wherein it has a means that provides a recess and / or embossing in the remaining strip of the film web and / or heats the remaining strip.
  • the packaging machine preferably has a means with which a recess and / or an embossing is provided in the remaining strip.
  • This means is preferably provided in the area of the cross cutter.
  • the recess and / or the embossing are preferably made at least substantially at the same time as the cross-section is made, particularly preferably during the same cycle of the packaging machine.
  • the means is preferably a knife and / or a punch and / or a laser and / or a water jet.
  • the means is preferably a punch with an internal cutting facet.
  • Another object of the present invention is a cross cutter which cuts out contours from the film web at least in sections, the cross cutter having an internal cutting bevel in the area of the cutting contour.
  • Figure 1 shows a packaging machine 1, in the present case a so-called thermoformer, which has a deep-drawing station 2, a filling station 7 and a sealing station 15.
  • a lower film web 8, here a plastic film web 8 is drawn off from a supply roll and transported cyclically along the packaging machine according to the invention from right to left. With each cycle, a format of packaging consisting preferably of several columns and particularly preferably several rows is preferably produced.
  • the film roll is usually mounted on a shaft.
  • the lower web of film 8 is transported on by one advantage, several advantages being required in order to produce a finished package.
  • the packaging machine has two means of transport10 (cf.
  • each transport means has a multiplicity of clamping means 13 which grip the edge region of the lower film web 8 in the inlet region 19 in a clamping manner and transfer the movement of the transport means to the lower film web 8. In the discharge area of the packaging machine, the clamping connection between the transport means and the lower web 8 is released again.
  • a heating means which heats the film web 8, in particular when it is at a standstill.
  • the packaging trays 6 are formed into the heated film web 8.
  • the lower tool 4 of the forming station 2 is arranged on a lifting table 5 which, as symbolized by the double arrow, is vertically adjustable, which is done by a lifting device. 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 with the packaging material 16 in the filling station 7.
  • an upper film 14 is firmly attached to the lower film web 8, for example by sealing.
  • the upper tool and / or the lower tool are lowered or raised before and after each film transport.
  • the upper film 14 is also unrolled from a film roll which is mounted on a shaft and can be guided in transport means or transported by transport chains, these transport means then only extending from the sealing station and possibly downstream. Otherwise, the statements made about the means of transport for the lower film apply.
  • the upper film can also be heated and deep-drawn with a heating medium.
  • a heatable sealing frame is provided as the lower tool 11, for example, which has an opening for each packaging tray into which the packaging tray dips during sealing, ie when the lower sealing tool moves upward.
  • the upper and lower film webs are pressed together between the upper and lower tools 12, 11 and combine under the influence of heat and pressure.
  • the tools 11, 12 are again moved vertically apart.
  • the finished packs are separated, which in the present case takes place with the cross cutter 18 and the longitudinal cutter 17.
  • the cross cutter 18 can also be raised or lowered with a lifting device 9.
  • an edge strip 31 is produced. This is usually the strip that is gripped by the film grippers 13. This verge is waste and must be disposed of. In the process, it is exposed to mechanical loads which can lead to the edge strip tearing and, for example, getting caught in the chain 10.
  • the following figures show ways and means to avoid this.
  • the Figures 2 - 4 show a first embodiment of the method according to the invention or the device according to the invention.
  • the device now has a means with which recesses 24 are provided in the edge strip 31, in particular in the area of the cross-sections 23, ie before the edge strips are separated from the packaging.
  • this means is a knife 20, which, as shown by the double arrow, moves up and down. During the upward movement, the knife penetrates the film webs 8, 14. This creates the two cuts 24 in the area of the cross section 23.
  • a recess 32 is provided for the knife 20, into which the knife can plunge.
  • the notch effect in the edge strip 31, which results from the fact that the cross section 23 extends partially into the edge strip 31, is reduced.
  • a crack / partial crack 33 is indicated, which is to be prevented or at least reduced by the recess 24.
  • the knife 20 is provided below the film web.
  • the person skilled in the art understands that it can also be arranged above the film web.
  • the recess in the cross cutter is preferably made much wider than the thickness of the knife so that the knife dips safely into the gap when cutting.
  • Figure 5 shows a further embodiment of the method according to the invention or the device according to the invention.
  • the cross cutter is designed here as a contour cutter.
  • the edge area of the cross cutter is expanded by the additional area 25, so that the area punched out by the cross cutter is enlarged.
  • each linear recess 24 has rounded portions 26 in its corner regions, which further reduces the notch effect, which in turn leads to increased stability of the edge strip.
  • Figure 7 shows an embodiment of the cross cutter 18 according to the prior art.
  • a section 28 is punched out of the film webs 8, 14 by means of the cross cutter.
  • Cutting facet ie the bevel or the sharpening provided in the outer area of the tool.
  • the edge strip 31 is pinched, which has proven to be disadvantageous for the progress of the crack.
  • Figure 8 shows the embodiment according to the invention of the cross cutter 18, which in the present case has an internal cutting facet 29 in the area of the contour cut in which a cutout 28 is created.
  • the film material is squeezed in the area of the cutout 28 and not in the area of the edge strip 31, which has a positive effect on the progress of the crack and thus on the durability of the edge strip.
  • the means 20 with which the recess 24 is produced preferably also has an internal grind, in the event that it is a contour punch.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Description

Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung einer Verpackung, bei der eine Folienbahn entlang einer Transportrichtung, insbesondere intermittierend, transportiert wird und in einer Formstation Mulden in die Folienbahn eingeformt werden, die mit einem Verpackungsgut befüllt und mit einer Deckelfolie verschlossen und anschließend mit zumindest einem Querschneider durch einen Querschnitt, d.h. durch einen Schnitt quer zur Transportrichtung der Folienbahn, vereinzelt werden. Des Weiteren betrifft die vorliegende Erfindung eine Verpackungsmaschine und eine Querstanze.The present invention relates to a method for producing a packaging in which a film web is transported along a transport direction, in particular intermittently, and depressions are formed in the film web in a forming station, which are filled with a packaging material and closed with a cover film and then with at least one Cross cutter through a cross section, ie be separated by a cut transverse to the transport direction of the film web. The present invention also relates to a packaging machine and a transverse punch.

Wenn Verpackungen, die aus einer Folienbahn hergestellt werden, vereinzelt werden, verbleiben in der Regel Reststreifen, beispielsweise zwei Randstreifen und gegebenenfalls ein oder mehrere Mittelstreifen, die entsorgt werden müssen, beispielsweise indem sie aufgerollt werden. Stand der Technik dazu ist beispielsweise aus der EP 0 485 208 A1 bekannt. In der Vergangenheit ist dieser Reststreifen oftmals abgerissen, was zu einem Maschinenstillstand geführt hat.When packaging made from a film web is separated, there are usually residual strips, for example two edge strips and possibly one or more center strips, which have to be disposed of, for example by being rolled up. The prior art is, for example, from EP 0 485 208 A1 known. In the past, this residual strip was often torn off, which led to a machine downtime.

Es war deshalb die Aufgabe der vorliegenden Erfindung ein Verfahren und eine Verpackungsmaschine zur Verfügung zu stellen, die die Nachteile des Standes der Technik nicht aufweisen.It was therefore the object of the present invention to provide a method and a packaging machine which do not have the disadvantages of the prior art.

Gelöst wird die Aufgabe mit einem Verfahren zur Herstellung einer Verpackung, bei der eine Folienbahn entlang einer Transportrichtung, insbesondere intermittierend, transportiert wird und in einer Formstation Mulden in die Folienbahn eingeformt werden, die mit einem Verpackungsgut befüllt und mit einer Deckelfolie verschlossen und anschließend mit zumindest einem Querschneider durch einen Querschnitt vereinzelt werden, wobei in einem Reststreifen im Bereich des Querschnitts eine Entlastungsausnehmung und/oder eine Prägung vorgesehen wird und/oder die Temperatur des Reststreifens erhöht wird.The object is achieved with a method for producing a packaging, in which a film web is transported along a transport direction, in particular intermittently, and troughs are formed in the film web in a forming station, which are filled with a packaging material and closed with a cover film and then with at least a cross cutter through a cross section, a relief recess and / or an embossing being provided in a residual strip in the area of the cross section and / or the temperature of the residual strip being increased.

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

Die vorliegende Erfindung betrifft ein Verfahren, das auf einer Verpackungsmaschine durchgeführt wird. Bei einer derartigen Verpackungsmaschine handelt es sich insbesondere um einen sogenannten Thermoformer, auf dem in der Regel Kunststofffolien verarbeitet werden. Beim Thermoformer wird eine Unterfolienbahn von einer Vorratsrolle abgerollt und insbesondere intermittierend entlang der Verpackungsmaschine transportiert. In einer Formstation wird zunächst eine Verpackungsmulde in die Unterfolienbahn geformt, die anschließend mit einem Verpackungsgut, insbesondere einem Lebensmittel, befüllt wird. Anschließend wird die Verpackungsmulde in einer Siegelstation mit einer oder mehreren Oberfolien, die an die Unterfolie gesiegelt werden, verschlossen. Abschließend werden die hergestellten Verpackungen vereinzelt, indem ein Querschneider die Unter- und die Oberfolienbahn mit einem Schnitt quer zur Transportrichtung durchtrennt. Dieser Schnitt wird im Folgenden als "Querschnitt" bezeichnet. In der Regel weist die Verpackungsmaschine noch einen oder mehrere Längsschneider auf, die die Verpackungen in Längsrichtung, d.h. parallel zu der Transportrichtung der Folienbahn durchtrennen.The present invention relates to a method which is carried out on a packaging machine. Such a packaging machine is in particular a so-called thermoformer on which plastic films are usually processed. With the thermoformer, a lower web of film is unrolled from a supply roll and, in particular, transported intermittently along the packaging machine. In a Forming station, a packaging trough is first formed in the lower film web, which is then filled with an item to be packaged, in particular a foodstuff. The packaging tray is then closed in a sealing station with one or more upper films that are sealed to the lower film. Finally, the packaging produced is separated by a cross cutter cutting through the lower and upper webs of film with a cut across the direction of transport. This section is referred to below as the “cross section”. As a rule, the packaging machine also has one or more longitudinal cutters, which cut through the packaging in the longitudinal direction, ie parallel to the transport direction of the film web.

Beim Vereinzeln der Verpackungen bleiben mindestens ein, in der Regel mehrere Reststreifen, beispielsweise zwei Rand- und/oder mindestens ein Mittelstreifen übrig, der nach dem Vereinzeln der Verpackungen entsorgt werden muss. Der Querschnitt erstreckt sich in der Regel nur geringfügig in diesen Randstreifen, so dass der Randstreifen als längliches Gebilde übrig bleibt und so entsorgt werden muss. Der Reststreifen kann beispielsweise aufgerollt und die Rolle entsorgt werden. Alternativ wird der Randstreifen einer Zerkleinerungsvorrichtung zugeführt, die ihn in kleinere Stücke zerteilt oder einem Absauger zugeführt, der ihn in einen Abfallbehälter befördert und dort sammelt. Dabei wird der Randstreifen mechanisch belastet, insbesondere durch Zugkräfte belastet.When the packages are separated, at least one, usually several, residual strips, for example two edge strips and / or at least one central strip, remain, which must be disposed of after the packages have been separated. As a rule, the cross-section extends only slightly into these edge strips, so that the edge strips remain as an elongated structure and must be disposed of in this way. The remaining strip can, for example, be rolled up and the roll disposed of. Alternatively, the edge strip is fed to a shredding device, which divides it into smaller pieces or fed to a suction device, which transports it to a waste container and collects it there. The edge strip is mechanically stressed, in particular stressed by tensile forces.

Erfindungsgemäß wird nun im Reststreifen im Bereich des Querschnitts eine oder mehrere Entlastungsausnehmung(en) oder eine oder mehrere Prägungen vorgesehen und/oder die Temperatur des Randstreifens wird erhöht. Das erfindungsgemäße Verfahren hat den Vorteil, dass der Reststreifen beim Entsorgen, bei dem er mechanisch, insbesondere auf Zug belastet wird, seltener reißt. Die Ausnehmung/Prägung vermindert den Fortschritt eines entstehenden Risses. Dadurch wird die Verfügbarkeit der Verpackungsmaschine erheblich erhöht und die Beschädigung der Verpackungsmaschine durch abgerissene Reststreifen entfällt.According to the invention, one or more relief recess (s) or one or more embossments are provided in the remaining strip in the area of the cross section and / or the temperature of the edge strip is increased. The method according to the invention has the advantage that the residual strip tears less often when it is disposed of, in which it is subjected to mechanical stress, in particular due to tension. The recess / embossing reduces the progress of a crack that occurs. This considerably increases the availability of the packaging machine and there is no damage to the packaging machine due to torn off residual strips.

Alternativ oder zusätzlich wird der Reststreifen, insbesondere im Bereich des Querschnitts so erwärmt, dass sich die Elastizität des Materials des Reststreifens erhöht. Für den Fall, dass der Reststreifen aus einer Kunststofffolie besteht, wird der Reststreifen nicht bis zum Erreichen der sogenannten Glastemperatur erwärmt. Vorzugsweise erfolgt die Erwärmung um 10 - 80 °K bezogen auf die Temperatur der Verpackungen unmittelbar nach deren Vereinzelung.Alternatively or additionally, the remaining strip is heated, in particular in the area of the cross section, in such a way that the elasticity of the material of the remaining strip is increased. In the event that the remaining strip consists of a plastic film, the remaining strip is not heated until the so-called glass temperature is reached. Preferably, the temperature is 10-80 ° K based on the temperature of the packaging immediately after it has been separated.

Vorzugsweise erfolgt die Entlastungsausnehmung durch einen Schnitt oder eine Ausstanzung. Vorzugsweise wird eine Entlastungsausnehmung vor und/oder nach und/oder zumindest abschnittsweise auf gleicher Höhe mit dem Querschnitt, jeweils bezogen auf die Transportrichtung der Folienbahn, vorgesehen. Vorzugsweise ist die Form der Entlastungsausnehmung linienförmig, wobei sich die Linie besonders bevorzugt parallel zu der Transportrichtung der Folienbahn erstreckt. Vorzugsweise sind die Ecken und/oder mindestens eine Seite der Entlastungsausnehmung mit einem Radius versehen, um die Kerbwirkung zu reduzieren.The relief recess is preferably made by a cut or a punching. A relief recess is preferably in front of and / or after and / or at least in sections at the same height as the cross section, in each case based on the Transport direction of the film web, provided. The shape of the relief recess is preferably linear, the line particularly preferably extending parallel to the transport direction of the film web. The corners and / or at least one side of the relief recess are preferably provided with a radius in order to reduce the notch effect.

Alternativ oder zusätzlich wird in dem Reststreifen eine Prägung vorgesehen, d.h. ebene Form des Reststreifens wird insbesondere durch plastische Verformung verändert. Vorzugsweise wird eine Prägung vor und/oder nach und/oder zumindest abschnittsweise auf gleicher Höhe mit dem Querschnitt, jeweils bezogen auf die Transportrichtung der Folienbahn, vorgesehen.Alternatively or additionally, an embossing is provided in the remaining strip, i.e. The flat shape of the remaining strip is changed in particular by plastic deformation. An embossing is preferably provided before and / or after and / or at least in sections at the same height as the cross section, in each case based on the transport direction of the film web.

Vorzugsweise entsteht beim Schneiden oder Stanzen des Querschnitts keine Quetschung, insbesondere keine Materialanhäufung im Bereich des Reststreifens.Preferably, when cutting or punching the cross-section, there is no pinching, in particular no accumulation of material in the area of the remaining strip.

Gemäß einer weiteren bevorzugten Ausführungsform ist die Entlastungsausnehmung und/oder Prägung Teil des Querschnitts, der die Folienbahn außerhalb des Reststreifens durchtrennt. Im Randbereich wird die Form des Querschneiders vorzugsweise dann so vergrößert, dass er sich stärker in den Reststreifen erstreckt. Insbesondere wird mindestens ein Radius des Querschneiders im Reststreifen vergrößert.According to a further preferred embodiment, the relief recess and / or embossing is part of the cross section which cuts through the film web outside of the residual strip. In the edge area, the shape of the cross cutter is then preferably enlarged so that it extends more strongly into the remaining strips. In particular, at least one radius of the cross cutter is enlarged in the remaining strip.

Vorzugsweise erstreckt sich die Entlastungsausnehmung zumindest durch die gesamte Dicke der Unterfolienbahn besonders bevorzugt auch durch die Oberfolienbahn.The relief recess preferably extends at least through the entire thickness of the lower film web, particularly preferably also through the upper film web.

Für den Fall, dass das Verpackungsgut in einer, im Vergleich zu Luft veränderten Atmosphäre und/oder Teilvakuum verpackt werden soll, weist insbesondere der Randstreifen Ausnehmungen auf, durch die Luft aus den Verpackungsmulden eines Formates gesaugt und/oder ein Austauschgas in die Verpackungsmulden geblasen wird. Diese Begasungsausnehmungen befinden sich vorzugsweise nur in der Unterfolienbahn und werden vorzugsweise, bezogen auf die Transportrichtung der Folienbahn stromaufwärts von der Siegelstation in die Folienbahn, beispielsweise durch Stanzen eingebracht.In the event that the packaged goods are to be packaged in an atmosphere and / or a partial vacuum that is different from air, the edge strip in particular has recesses through which air is sucked out of the packaging trays of a format and / or an exchange gas is blown into the packaging trays . These gassing recesses are preferably only located in the lower web of film and are preferably introduced into the web of film, for example by punching, upstream of the sealing station in relation to the transport direction of the web of film.

Gemäß einem weiteren erfindungsgemäßen oder bevorzugten Gegenstand der vorliegenden Erfindung werden die Begasungsausnehmungen nun in ihrer Form und/oder ihrer Anordnung so gestaltet, dass sie gleichzeitig den Rissfortschritt in dem Reststreifen, insbesondere dem Randstreifen, zumindest vermindern. Vorzugsweise werden die Begasungsausnehmungen so angeordnet, dass sie sich stromaufwärts, auf derselben Höhe und/oder stromabwärts von einem Querschnitt befinden, jeweils bezogen auf die Transportrichtung der Folienbahn und auch im Bereich vorzugsweise in unmittelbarer Nachbarschaft von/ zu einem Querschnitt angeordnet werden, wobei die Begasungsausnehmungen, die gleichzeitig auch den Rissfortschritt im Bereichs Querschnitts vermindern, einige Takte vor dem Anbringen des Querschnitts in die Folienbahn eingebracht werden. Die Form und/oder Größe und/oder Lage dieser Ausnehmungen wird so gestaltet, dass der Gasaustausch gegeben und der Rissfortschritt vermindert ist.According to a further inventive or preferred subject matter of the present invention, the shape and / or arrangement of the gassing recesses are designed in such a way that they at the same time at least reduce the crack propagation in the remaining strip, in particular the edge strip. Preferably, the gassing recesses are arranged so that they are upstream, at the same height and / or downstream of a cross-section, each based on the transport direction of the film web and also in the area, preferably in the immediate vicinity of / to a cross-section, the gassing recesses, which at the same time also reduce the crack propagation in the cross-section, a few cycles before the cross-section is attached to the Foil web are introduced. The shape and / or size and / or position of these recesses is designed in such a way that gas exchange occurs and the progress of cracks is reduced.

Ein weiterer Gegenstand der vorliegenden Erfindung ist eine Verpackungsmaschine mit einer Formstation, die Mulden in die Folienbahn formt, einer Füllstation, in der die Mulden mit einem Verpackungsgut befüllt werden und mit einer Siegelstation, die eine Oberfolie an die Folienbahn siegelt und die einen Querschneider aufweist, der die Verpackungen vereinzelt, wobei sie ein Mittel aufweist, das eine Ausnehmung und/oder Prägung im Reststreifen der Folienbahn vorsieht und/oder den Reststreifen erwärmt.Another object of the present invention is a packaging machine with a forming station that forms wells in the film web, a filling station in which the wells are filled with a packaged goods and with a sealing station that seals an upper film to the film web and which has a cross cutter, which separates the packaging, wherein it has a means that provides a recess and / or embossing in the remaining strip of the film web and / or heats the remaining strip.

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

Vorzugsweise weist die Verpackungsmaschine ein Mittel auf, mit dem eine Ausnehmung und/oder eine Prägung in dem Reststreifen vorgesehen wird. Vorzugsweise ist dieses Mittel im Bereich des Querschneiders vorgesehen. Vorzugsweise erfolgt das Einbringen der Ausnehmung und/oder der Prägung zumindest im Wesentlichen gleichzeitig mit dem Anbringen des Querschnitts, besonders bevorzugt während desselben Takts der Verpackungsmaschine.The packaging machine preferably has a means with which a recess and / or an embossing is provided in the remaining strip. This means is preferably provided in the area of the cross cutter. The recess and / or the embossing are preferably made at least substantially at the same time as the cross-section is made, particularly preferably during the same cycle of the packaging machine.

Vorzugsweise ist das Mittel ein Messer und/oder eine Stanze und/oder ein Laser und/oder ein Wasserstrahl.The means is preferably a knife and / or a punch and / or a laser and / or a water jet.

Vorzugsweise ist das Mittel eine Stanze mit einer innenliegenden Schneidwate.The means is preferably a punch with an internal cutting facet.

Ein weiterer Gegenstand der vorliegenden Erfindung ist ein Querschneider, der zumindest abschnittsweise Konturen aus der Folienbahn ausschneidet wobei der Querschneider im Bereich der Schneidkontur eine innenliegende Schneidwate aufweist.Another object of the present invention is a cross cutter which cuts out contours from the film web at least in sections, the cross cutter having an internal cutting bevel in the area of the cutting contour.

Im Folgenden werden die Erfindungen anhand der Figuren 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 Verpackungsmaschine.
Figuren 2 bis 4
zeigen Details des Mittels zur Einbringung der Ausnehmung in den Randstreifen 31.
Figur 5
zeigt ein Querschneider mit einer erfindungsmäßen Form im Randbereich.
Figur 6
zeigt eine bevorzugte Form der Ausnehmung vor und nach dem Querschnitt.
Figur 7
zeigt eine Schneidwate nach dem Stand der Technik.
Figur 8
zeigt einen Querschneider mit einer erfindungsgemäßen Schneidwate.
The inventions are explained below with reference to the figures. These explanations are merely exemplary and do not restrict the general inventive concept. The explanations apply equally to all subjects of the present invention.
Figure 1
shows the packaging machine.
Figures 2 to 4
show details of the means for making the recess in the edge strip 31.
Figure 5
shows a cross cutter with a shape according to the invention in the edge area.
Figure 6
shows a preferred shape of the recess before and after the cross-section.
Figure 7
shows a cutting facet according to the prior art.
Figure 8
shows a cross cutter with a cutting facet according to the invention.

Figur 1 zeigt eine Verpackungsmaschine 1, in dem vorliegenden Fall ein sogenannter Thermoformer, die eine Tiefziehstation 2, eine Füllstation 7 sowie eine Siegelstation 15 aufweist. Eine Unterfolienbahn 8, hier eine Kunststofffolienbahn 8, wird von einer Vorratsrolle abgezogen und taktweise entlang der erfindungsgemäßen Verpackungsmaschine von rechts nach links transportiert. Bei jedem Takt wird vorzugsweise ein Format an Verpackungen bestehend aus vorzugsweise mehreren Spalten und besonders bevorzugt mehreren Zeilen hergestellt. Die Folienrolle ist in der Regel auf einer Welle gelagert. Bei einem Takt wird die Unterfolienbahn 8 um einen Vorzug weitertransportiert, wobei es mehrerer Vorzüge bedarf, um eine fertige Verpackung zu produzieren. Dafür weist die Verpackungsmaschine zwei Transportmittel10 (vergleiche Figur 2), in dem vorliegenden Fall jeweils zwei Endlosketten, auf, die rechts und links von der Unterfolienbahn 8 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 Zahnräder 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 13 auf, die die den Randbereich der Unterfolienbahn 8 im Einlaufbereich 19 klemmend ergreifen und die Bewegung des Transportmittels auf die Unterfolienbahn 8 übertragen. Im Auslaufbereich der Verpackungsmaschine wird die klemmende Verbindung zwischen dem Transportmittel und der Unterfolienbahn 8 wieder gelöst. Stromabwärts von dem Einlaufbereich 19 ist ein Heizmittel vorgesehen, das die Folienbahn 8 erwärmt, insbesondere wenn diese stillsteht. In der Formstation 2, die hier über ein Oberwerkzeug 3 und ein Unterwerkzeug 4 verfügt, das die Form/Matrize der herzustellenden Verpackungsmulde aufweist, werden die Verpackungsmulden 6 in die angewärmte Folienbahn 8 geformt. Das Unterwerkzeug 4 der Formstation 2 ist auf einem Hubtisch 5 angeordnet, der, wie durch den Doppelpfeil symbolisiert wird, vertikal verstellbar ist, was durch eine Hubvorrichtung erfolgt. 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 15, die ebenfalls aus einem Oberwerkzeug 12 und einem vertikal verstellbaren Unterwerkzeug 11 besteht, wird eine Oberfolie 14 stoffschlüssig beispielsweise durch Siegeln an der Unterfolienbahn 8 befestigt. Auch in der Siegelstation werden das Oberwerkzeug und/oder das Unterwerkzeug vor und nach jedem Folientransport abgesenkt bzw. angehoben. Auch die Oberfolie 14 wird von einer Folienrolle, die auf einer Welle gelagert ist, abgerollt und 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 den Transportmitteln der Unterfolie gemacht wurden. Auch die Oberfolie kann mit einem Heizmittel angewärmt und tiefgezogen werden. Für das Siegeln ist als Unterwerkzeug 11 beispielweise ein heizbarer Siegelrahmen vorgesehen, der pro Verpackungsmulde eine Öffnung aufweist, in die die Verpackungsmulde beim Siegeln, d.h. bei der Aufwärtsbewegung des Untersiegelwerkzeugs, eintaucht. Zum Siegeln werden die Ober- und die Unterfolienbahn zwischen dem Ober- und dem Unterwerkzeug 12, 11 zusammengepresst und verbinden sich unter dem Einfluss von Wärme und Druck. Nach dem Siegeln werden die Werkzeuge 11, 12 wieder vertikal auseinanderbewegt. Im weiteren Verlauf der Verpackungsmaschine werden die fertiggestellten Verpackungen vereinzelt, was in dem vorliegenden Fall mit dem Querschneider 18 und dem Längsschneider 17 erfolgt. Der Querschneider 18 ist in dem vorliegenden Fall ebenfalls mit einer Hubeinrichtung 9 anhebbar bzw. absenkbar. Beim Vereinzeln der Verpackungen entsteht ein Randstreifen 31. Dies ist in der Regel der Streifen, der von den Foliengreifern 13 ergriffen wird. Dieser Randstreifen ist Abfall und muss entsorgt werden. Dabei wird er mechanischen Belastungen ausgesetzt, die dazu führen können, dass der Randstreifen reißt und sich beispielsweise in der Kette 10 verfängt. Die folgenden Figuren zeigen Mittel und Wege dies zu vermeiden. Figure 1 shows a packaging machine 1, in the present case a so-called thermoformer, which has a deep-drawing station 2, a filling station 7 and a sealing station 15. A lower film web 8, here a plastic film web 8, is drawn off from a supply roll and transported cyclically along the packaging machine according to the invention from right to left. With each cycle, a format of packaging consisting preferably of several columns and particularly preferably several rows is preferably produced. The film roll is usually mounted on a shaft. In the case of one cycle, the lower web of film 8 is transported on by one advantage, several advantages being required in order to produce a finished package. For this, the packaging machine has two means of transport10 (cf. Figure 2 ), in the present case two endless chains, which are arranged to the right and left of the lower film web 8. At least one gearwheel is provided for each chain both at the beginning and at the end of the packaging machine, around which the respective chain is deflected. At least one of these gears is driven. The gears in the entrance area and / or in the exit area can be connected to one another, preferably by a rigid shaft. Each transport means has a multiplicity of clamping means 13 which grip the edge region of the lower film web 8 in the inlet region 19 in a clamping manner and transfer the movement of the transport means to the lower film web 8. In the discharge area of the packaging machine, the clamping connection between the transport means and the lower web 8 is released again. Downstream of the inlet region 19, a heating means is provided which heats the film web 8, in particular when it is at a standstill. In the forming station 2, which here has an upper tool 3 and a lower tool 4, which the form / die of Has the packaging tray to be produced, the packaging trays 6 are formed into the heated film web 8. The lower tool 4 of the forming station 2 is arranged on a lifting table 5 which, as symbolized by the double arrow, is vertically adjustable, which is done by a lifting device. 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 with the packaging material 16 in the filling station 7. In the adjoining sealing station 15, which also consists of an upper tool 12 and a vertically adjustable lower tool 11, an upper film 14 is firmly attached to the lower film web 8, for example by sealing. In the sealing station, too, the upper tool and / or the lower tool are lowered or raised before and after each film transport. The upper film 14 is also unrolled from a film roll which is mounted on a shaft and can be guided in transport means or transported by transport chains, these transport means then only extending from the sealing station and possibly downstream. Otherwise, the statements made about the means of transport for the lower film apply. The upper film can also be heated and deep-drawn with a heating medium. For the sealing, a heatable sealing frame is provided as the lower tool 11, for example, which has an opening for each packaging tray into which the packaging tray dips during sealing, ie when the lower sealing tool moves upward. For sealing, the upper and lower film webs are pressed together between the upper and lower tools 12, 11 and combine under the influence of heat and pressure. After sealing, the tools 11, 12 are again moved vertically apart. In the further course of the packaging machine, the finished packs are separated, which in the present case takes place with the cross cutter 18 and the longitudinal cutter 17. In the present case, the cross cutter 18 can also be raised or lowered with a lifting device 9. When the packaging is separated, an edge strip 31 is produced. This is usually the strip that is gripped by the film grippers 13. This verge is waste and must be disposed of. In the process, it is exposed to mechanical loads which can lead to the edge strip tearing and, for example, getting caught in the chain 10. The following figures show ways and means to avoid this.

Die Figuren 2 - 4 zeigen eine erste Ausführungsform des erfindungsgemäßen Verfahrens beziehungsweise der erfindungsgemäßen Vorrichtung. Die miteinander verbundenen Folienbahnen 8, 14, die der Einfachheit halber in dem vorliegenden Fall ohne Verpackungsmulden dargestellt sind, werden stromabwärts, bezogen auf die Transportrichtung der Folienbahn, von der Siegelstation von einem Querschneider 18 durch Querschnitte 23 vereinzelt. Stromabwärts von dem Querschneider ist ein Längsschneider 17 vorgesehen, der Längsschnitte in den Folienbahne 8, 14 anbringt, wodurch ein Randstreifen 31 entsteht. Erfindungsgemäß weist die Vorrichtung nun ein Mittel auf, mit dem Ausnehmungen 24 in dem Randstreifen 31, insbesondere im Bereich der Querschnitte 23 vorgesehen werden, d.h. bevor die Randstreifen von den Verpackungen getrennt sind. In dem vorliegenden Fall ist dieses Mittel ein Messer 20, das sich, wie durch den Doppelpfeil dargestellt, aufwärts und abwärts bewegt. Bei der Aufwärtsbewegung durchdringt das Messer die Folienbahnen 8, 14. Dadurch entstehen die beiden Schnitte 24 im Bereich des Querschnitts 23. Im Querschneider 18 ist für das Messer 20 eine Ausnehmung 32 vorgesehen, in die das Messer eintauchen kann. Durch die beiden Ausnehmungen 24 wird die Kerbwirkung in dem Randstreifen 31, die dadurch entsteht, dass sich der Querschnitt 23 teilweise in den Randstreifen 31 erstreckt, vermindert. In Figur 4 ist ein Riss/Teilriss 33 angedeutet, der durch die Ausnehmung 24 verhindert oder zumindest vermindert werden soll.The Figures 2 - 4 show a first embodiment of the method according to the invention or the device according to the invention. The interconnected film webs 8, 14, which for the sake of simplicity are shown in the present case without packaging troughs, are separated downstream, based on the transport direction of the film web, from the sealing station by a cross cutter 18 through cross-sections 23. Downstream of the cross cutter is a length cutter 17 provided, which makes longitudinal cuts in the film webs 8, 14, whereby an edge strip 31 is formed. According to the invention, the device now has a means with which recesses 24 are provided in the edge strip 31, in particular in the area of the cross-sections 23, ie before the edge strips are separated from the packaging. In the present case, this means is a knife 20, which, as shown by the double arrow, moves up and down. During the upward movement, the knife penetrates the film webs 8, 14. This creates the two cuts 24 in the area of the cross section 23. In the cross cutter 18, a recess 32 is provided for the knife 20, into which the knife can plunge. As a result of the two recesses 24, the notch effect in the edge strip 31, which results from the fact that the cross section 23 extends partially into the edge strip 31, is reduced. In Figure 4 a crack / partial crack 33 is indicated, which is to be prevented or at least reduced by the recess 24.

In dem dargestellten Fall ist das Messer 20 unterhalb der Folienbahn vorgesehen. Der Fachmann versteht, dass es auch oberhalb der Folienbahn angeordnet sein kann.In the case shown, the knife 20 is provided below the film web. The person skilled in the art understands that it can also be arranged above the film web.

Vorzugsweise wird die Ausnehmung im Querschneider wesentlich breiter als die Dicke des Messers ausgeführt, damit das Messer beim Schneiden sicher in den Spalt eintaucht.The recess in the cross cutter is preferably made much wider than the thickness of the knife so that the knife dips safely into the gap when cutting.

Figur 5 zeigt eine weitere Ausführungsform des erfindungsgemäßen Verfahrens beziehungsweise der erfindungsgemäßen Vorrichtung. Der Querschneider ist hier als Konturschneider ausgeführt. In dem vorliegenden Fall wird der Randbereich des Querschneiders um den Zusatzbereich 25 erweitert, so dass sich die durch den Querschneider ausgestanzte Fläche vergrößert. Dadurch entsteht in dem Randstreifen 31 eine vergrößerte Ausnehmung, die insbesondere im Randstreifen vergrößerte Radien aufweist, wodurch wiederum die Kerbwirkung und damit die Rissanfälligkeit des Randstreifens reduziert werden. Figure 5 shows a further embodiment of the method according to the invention or the device according to the invention. The cross cutter is designed here as a contour cutter. In the present case, the edge area of the cross cutter is expanded by the additional area 25, so that the area punched out by the cross cutter is enlarged. This creates an enlarged recess in the edge strip 31, which has enlarged radii in particular in the edge strip, which in turn reduces the notch effect and thus the susceptibility of the edge strip to cracks.

In Figur 6 Ist eine weitere bevorzugte Ausführungsform der vorliegenden Erfindung dargestellt. In dem vorliegenden Fall weist jede linienförmige Ausnehmung 24 in ihren Eckbereichen Rundungen 26 auf, wodurch die Kerbwirkung noch weiter reduziert wird, was wiederum zu einer erhöhten Stabilität des Randstreifens führt.In Figure 6 Shown is another preferred embodiment of the present invention. In the present case, each linear recess 24 has rounded portions 26 in its corner regions, which further reduces the notch effect, which in turn leads to increased stability of the edge strip.

Figur 7 zeigt eine Ausführungsform des Querschneiders 18 gemäß dem Stand der Technik. Mittels des Querschneiders wird ein Abschnitt 28 aus den Folienbahnen 8, 14 ausgestanzt. Bei der Ausführungsform des Querschneiders gemäß dem Stand der Technik ist die Schneidwate, d.h. der Anschliff oder die Anschärfung im Außenbereich des Werkzeugs vorgesehen. Dadurch entsteht bei der Durchführung des Schnitts eine Quetschung des Randstreifens 31, was sich als nachteilig für den Rissfortschritt herausgestellt hat. Figure 7 shows an embodiment of the cross cutter 18 according to the prior art. A section 28 is punched out of the film webs 8, 14 by means of the cross cutter. In the embodiment of the cross cutter according to the prior art Cutting facet, ie the bevel or the sharpening provided in the outer area of the tool. As a result, when the cut is made, the edge strip 31 is pinched, which has proven to be disadvantageous for the progress of the crack.

Figur 8 zeigt die erfindungsgemäße Ausführungsform des Querschneiders 18, der in dem vorliegenden Fall im Bereich des Konturenschnitts, bei dem ein Ausschnitt 28 entsteht, eine innenliegende Schneidwate 29 aufweist. Dadurch erfolgt die Verquetschung des Folienmaterials im Bereich des Ausschnitts 28 und nicht im Bereich des Randstreifens 31, was sich positiv auf den Rissfortschritt und damit auf die Haltbarkeit des Randstreifens auswirkt. Der Fachmann versteht, dass das Mittel 20, mit dem die Ausnehmung 24 erzeugt wird, vorzugsweise auch einen Innenschliff aufweist, für den Fall, dass es sich um eine Konturstanze handelt. Figure 8 shows the embodiment according to the invention of the cross cutter 18, which in the present case has an internal cutting facet 29 in the area of the contour cut in which a cutout 28 is created. As a result, the film material is squeezed in the area of the cutout 28 and not in the area of the edge strip 31, which has a positive effect on the progress of the crack and thus on the durability of the edge strip. The person skilled in the art understands that the means 20 with which the recess 24 is produced preferably also has an internal grind, in the event that it is a contour punch.

Bezugszeichenliste:List of reference symbols:

11
VerpackungsmaschinePacking machine
22
Formstation, TiefziehstationForming station, deep-drawing station
33
Oberwerkzeug der TiefziehstationUpper tool of the deep-drawing station
44th
Unterwerkzeug der TiefziehstationLower tool of the deep-drawing station
55
Hubtisch, Träger eines Werkzeugs der Siegel-, Tiefziehstation und/oder der SchneideinrichtungLifting table, carrier of a tool of the sealing, deep-drawing station and / or the cutting device
66th
VerpackungsmuldePackaging tray
77th
FüllstationFilling station
88th
Folienbahn, UnterfolienbahnFilm web, sub-film web
99
HubeinrichtungLifting device
1010
TransportketteTransport chain
1111
Unterwerkzeug der SiegelstationLower tool of the sealing station
1212
Oberwerkzeug der SiegelstationUpper tool of the sealing station
1313
FoliengreiferFoil gripper
1414th
Oberfolienbahn, DeckelfolieUpper film web, cover film
1515th
SiegelstationSealing station
1616
VerpackungsgutPackaged goods
1717th
LängsschneiderSlitter
1818th
QuerschneiderSheeter
1919th
EinlaufbereichInlet area
2020th
Perforationsmittel, MesserPerforating means, knives
2121st
Bewegung des PerforationsmittelsMovement of the perforating means
2222nd
EinlegestationLoading station
2323
Querschnittcross-section
2424
Entlastungsausnehmung, EntlastungsschnittRelief recess, relief cut
2525th
Entlastungsausnehmung, ZusatzausnehmungRelief recess, additional recess
2626th
Entlastungsausnehmung, RundungenRelief recess, curves
2727
Ambossanvil
2828
AusschnittCutout
2929
Schneidwate/Anschliff/AnschärfungCutting facet / bevel / sharpening
3030th
Quetschung, aufgeworfenes MaterialBruise, thrown up material
3131
RandstreifenVerge
3232
Ausnehmung im Querschneider 18Recess in the cross cutter 18
3333
Beispielhafter Riss / AnrissExemplary crack / tear

Claims (10)

  1. Method for producing a pack where a film web (8) is transported, in particular intermittently, along a transporting direction (23) and hollows (6) are formed in the film web in a forming station, said hollows being filled with pack contents (16) and closed by a cover film (14) and then being separated by a cross-cut (23) using at least one cross-cutter (18), characterized in that a loading-relief aperture (24 - 26) and/or a stamped formation are/is provided in a residual strip (31) in the region of the cross-cut (23) and/or the temperature of the peripheral strip is increased.
  2. Method according to Claim 1, characterized in that the loading-relief aperture (24) is linear.
  3. Method according to either of the preceding claims, characterized in that the loading-relief aperture is part of the cross-cut (23).
  4. Method according to one of the preceding claims, characterized in that the loading-relief aperture extends at least through the entire thickness of the film web (8) .
  5. Method according to Claim 1, characterized in that the peripheral strip is not pinched during the cross-cutting operation.
  6. Method according to one of the preceding claims, characterized in that the aperture (24 - 26) serves, at the same time, to admit gas to the pack hollows and/or remove gas therefrom.
  7. Packing machine having a forming station (2), which forms hollows (6) in the film web, having a filling station (7), in which the hollows (6) are filled with pack contents (16), and possibly having a sealing station (15), which seals an upper film (14) onto the film web (8), and with a cross-cutter (18), characterized in that the packing machine has a means (20) which provides an aperture (24 - 26) and/or a stamped formation in the peripheral strip (31) of the film web (8, 14) and/or heats the peripheral strip (31).
  8. Packing machine according to Claim 7, characterized in that the means (20) is a blade or a punch or a laser or a water jet.
  9. Packing machine according to either of Claims 7 and 8, characterized in that the means is provided in the region of the cross-cutter (18) or in front of the same.
  10. Packing machine according to one of preceding Claims 7 - 9, characterized in that the means is a punch with an inner cutting bevel (29).
EP16736172.4A 2015-07-10 2016-07-07 Packaging machine having residual strip disposal Active EP3319881B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015212936 2015-07-10
PCT/EP2016/066149 WO2017009179A1 (en) 2015-07-10 2016-07-07 Packaging machine having residual strip disposal

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EP3319881A1 EP3319881A1 (en) 2018-05-16
EP3319881B1 true EP3319881B1 (en) 2020-09-02

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WO (1) WO2017009179A1 (en)

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Publication number Priority date Publication date Assignee Title
WO2023105084A1 (en) 2021-12-10 2023-06-15 Gea Food Solutions Germany Gmbh Packaging machine having a suction nozzle

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Publication number Priority date Publication date Assignee Title
EP0485208A1 (en) * 1990-11-09 1992-05-13 Sanford Redmond Inc. Compact form-fill-seal machine for automatic production of sealed packages with improved transverse cutting mechanism
DE102004024358A1 (en) * 2004-05-17 2005-12-15 Multivac Sepp Haggenmüller Gmbh & Co. Kg Packaging machine and method for cutting packages

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Title
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