EP0469288B1 - Method and apparatus for packaging bulk materials - Google Patents

Method and apparatus for packaging bulk materials Download PDF

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Publication number
EP0469288B1
EP0469288B1 EP91110440A EP91110440A EP0469288B1 EP 0469288 B1 EP0469288 B1 EP 0469288B1 EP 91110440 A EP91110440 A EP 91110440A EP 91110440 A EP91110440 A EP 91110440A EP 0469288 B1 EP0469288 B1 EP 0469288B1
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EP
European Patent Office
Prior art keywords
packaging
tube
bulk materials
oscillation
sheeting
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.)
Expired - Lifetime
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EP91110440A
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German (de)
French (fr)
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EP0469288A1 (en
Inventor
Heinz Focke
Harald Dr. Gosebruch
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Focke and Co GmbH and Co KG
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Focke and Co GmbH and Co KG
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Publication of EP0469288A1 publication Critical patent/EP0469288A1/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
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/26—Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
    • B65B51/30—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes
    • B65B51/306—Counter-rotating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B1/20—Reducing volume of filled material
    • B65B1/22—Reducing volume of filled material by vibration
    • 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
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles

Definitions

  • the invention relates to a method for packaging bulk goods, in particular large-sized, lumpy foodstuffs and luxury foods, such as potato chips, in packaging containers, in particular tubular bags made of plastic film, the bulk goods being filled into the packaging and / or inside it before being sealed is influenced by vibrations or vibrations to promote the filling process and / or the tightness of the bulk material within the packaging. Furthermore, the invention relates to a device according to the preamble of the independent device claim.
  • sealing members for attaching the sealing seam directed transversely to the tubular film are assigned a stripping member. After a filling process in the area of the closure seam to be produced, this is guided along the outside of the packaging film or the film tube in the sense of a stripping movement. Residues of the packaging material within the film tube are to be removed from this area (EP-A-0 165 819).
  • the object of the invention is to further improve the described manner of packaging particularly sensitive bulk goods.
  • the aim is to ensure that no residues of the packaging material are present in the area of the sealing seam of the packaging to be attached.
  • the method according to the invention is characterized in that the bulk material and / or the packaging are caused to vibrate without contact by air vibrations. Due to the vibrations, the packaged goods are introduced into the packaging more quickly. This also removes residues of the packaging material from the upper area of the packaging (tubular bag) in a particularly gentle manner, so that the transverse sealing seam is subsequently sealed here can be attached.
  • the object is further achieved by the device according to claim 6.
  • the vibration in the packaged goods or in the plastic film of the tubular bag is generated by non-contact vibration or vibration sources. These can take effect intermittently, in particular during a final phase of the packaging process or only immediately afterwards before the closure seam is attached.
  • the air vibrations can only be generated by mechanically working generators, such as compressors. Electrodynamic vibration generators that operate on the principle of a loudspeaker are particularly advantageous.
  • a membrane is made to vibrate electrodynamically. The vibrations are passed on via an air column and transferred to the adjacent packaging material, namely to the film tube or film bag. As a result, vibrations also occur within the film bag, namely in the packaged goods.
  • the embodiment shown in the drawings relates to the production of bag packaging, namely tubular bags 10.
  • the tubular bags are used to hold bulk materials, e.g. of potato chips.
  • the tubular bags 10 are manufactured in a conventional manner from a film web 11 made of thermally sealable plastic.
  • the film web 11 is pulled off a bobbin 12 and fed to a packaging station 13.
  • a film tube 14 is formed from the originally flat film web 11.
  • the film web 11 runs over a shaped piece 15, which forms the film tube 14 with overlapping longitudinal tabs.
  • a longitudinal seam is made by a sealing tool 16, so that the film tube 14, which is shot in cross section, is created. This is conveyed in the downward direction, specifically by side conveyor belts 17.
  • the package contents e.g. Potato chips
  • the material arrives in an upright filling tube 19. This leads into the film tube 14 which surrounds the filling tube 19.
  • the contents of the pack are added in portions.
  • the goods to be packaged pass under their own weight through the filling tube 19 into a free section of the film tube 14 below the filling tube 19.
  • a bottom seam 20 is applied transversely to the longitudinal extent of the film tube 14. In the area of the bottom seam 20, the filled tubular bag 10 is separated from the tubular film 14 by transverse cutting tools.
  • the bottom seam 20 is produced by circumferential sealing jaws 21, 22.
  • two pairs of synchronously rotating sealing jaws 21, 22 are arranged in the region of a sealing station.
  • the sealing jaws 21, 22 are each attached to a common support arm 23 which is mounted on a shaft 24 and is driven in rotation.
  • the sealing jaws 21, 22 at the ends of the support arms 23 are pivotally mounted and guided in a closed curved path 25.
  • the sealing jaws 21, 22 run with guide rollers 26, 27 in the cam track 25. This is designed such that a straight, upright guide section 28 is formed adjacent to the film tube 14 or tubular bag 10.
  • two sealing jaws 21, 22 are moved on both sides of the film tube 14 from top to bottom with local compression of the film tube 14 and to form the bottom seam 20.
  • This has a double width, so that a separating cut is carried out in the middle. This creates an upper closure seam of a finished, filled tubular bag and at the same time a bottom seam 20 at the lower end of the tubular film 14 for the next tubular bag 10.
  • a portion of the bag contents is supplied.
  • the film tube 14 and / or the contents of the bag are made to vibrate at least temporarily. This causes a certain orientation and compression of the contents of the bag.
  • the vibration is generated towards the end of the filling process and immediately afterwards, namely before the upper closure seam is attached (with a new bottom seam 20).
  • the vibration or vibrating effect ensures that the area for attaching the bottom seam 20 and the top closure seam remains free of goods to be packaged. This enables the transverse seams to be attached without problems by sealing.
  • an oscillation or vibration unit is arranged above the sealing station for the bottom seam and closing seam formed by the sealing jaws 21, 22, which temporarily generates vibrations in the film tube 14 and / or in the packaged goods.
  • the vibration unit here consists of two mutually opposite vibration generators 29, 30. These are located on both sides of the film tube 14. In the area of the vibration generators 29, 30, a sleeve-like guide 31 is formed, through which the film tube 14 is passed.
  • the tubular guide 31, which is open at the top and bottom, can be circular, oval, square or - as in the present exemplary embodiment according to FIG. 3 - rectangular in cross section.
  • the vibration generators 29, 30 are laterally attached to the guide 31, with funnel-shaped housings 32.
  • the guide 31 is provided in the area of the vibration generators 29, 30 with an opening 33, which allows air waves from the vibration generators to pass through 29, 30 to the film tube 14. Edges 34 of the openings 33 are shaped outwards in order to avoid damage to the film tube 14.
  • the vibration generators 29, 30 work in the present exemplary embodiment on an electrodynamic basis, in the manner of a loudspeaker.
  • a membrane 35 is set in vibration. This in turn generates vibrations in the air column, which are passed through the openings 33 to the film tube 14 and to the packaging material within the same.
  • the vibrations generated are in the lower frequency range, e.g. below 1000 Hz.
  • Vibrations in the packaging material or goods are only generated during a partial phase of the filling process.
  • the vibration generators 29, 30 are accordingly switched on in cycles, at least immediately before the upper closure seam of a filled tubular bag 10 (including the bottom seam 20) is produced.
  • the vibration can also be generated while the packaged goods are being filled.
  • the vibrations generated by the vibration generators 29 on the one hand and 30 on the other hand can be in phase or out of phase with one another.
  • the filling pipe 19 ends immediately above the vibration generators 29, 30 or the guide 31.
  • the entire device is mounted on a machine frame 36.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Basic Packing Technique (AREA)

Description

Die Erfindung betrifft ein Verfahren zum Verpacken von Schüttgütern, insbesondere von großformatigen, stückigen Nahrungs- und Genußmitteln, wie Kartoffel-Chips, in Verpackungsbehältern, insbesondere Schlauchbeuteln aus Kunststoffolie, wobei das Schüttgut während des Einfüllens in die Verpackung und/oder innerhalb derselben vor dem Verschließen durch Rüttel- bzw. Vibrationsbeaufschlagung zur Förderung des Füllprozesses und/oder der Dichtigkeit des Schüttguts innerhalb der Verpackung beeinflußt wird. Weiterhin betrifft die Erfindung eine Vorrichtung gemäß dem Oberbegriff des unabhängigen Vorrichtungsanspruchs.The invention relates to a method for packaging bulk goods, in particular large-sized, lumpy foodstuffs and luxury foods, such as potato chips, in packaging containers, in particular tubular bags made of plastic film, the bulk goods being filled into the packaging and / or inside it before being sealed is influenced by vibrations or vibrations to promote the filling process and / or the tightness of the bulk material within the packaging. Furthermore, the invention relates to a device according to the preamble of the independent device claim.

Die Handhabung von sperrigen Schüttgütern, insbesondere von leichtgewichtigen Kartoffel-Chips, bereitet insbesondere Schwierigkeiten in der Verpackungstechnik. Es ist üblich, derartige Schüttgüter in Schlauchbeuteln zu verpacken. Besondere Probleme treten bei der Herstellung von Verschlußnähten dieses Verpackungstyps auf. In diesem Bereich befinden sich häufig Teile des Verpackungsguts, die das Anbringen der Verschlußnaht durch thermisches Siegeln erschweren.The handling of bulky bulk goods, in particular lightweight potato chips, creates particular difficulties in packaging technology. It is customary to pack such bulk goods in tubular bags. Particular problems arise in the manufacture of closure seams of this type of packaging. In this area there are often parts of the packaged goods that are used to apply the sealing seam by means of thermal sealing complicate.

Bei einer bekannten Vorrichtung zum Verpacken von Kartoffel-Chips in Schlauchbeuteln ist Siegelorganen zum Anbringen der quer zum Folienschlauch gerichteten Verschlußnaht ein Abstreiforgan zugeordnet. Dieses wird nach Beendigung eines Füllvorgangs im Bereich der herzustellenden Verschlußnaht an der Verpackungsfolie bzw. am Folienschlauch außen entlanggeführt im Sinne einer Abstreifbewegung. Dabei sollen Rückstände des Verpackungsguts innerhalb des Folienschlauchs aus diesem Bereich herausgefördert werden (EP-A-0 165 819).In a known device for packaging potato chips in tubular bags, sealing members for attaching the sealing seam directed transversely to the tubular film are assigned a stripping member. After a filling process in the area of the closure seam to be produced, this is guided along the outside of the packaging film or the film tube in the sense of a stripping movement. Residues of the packaging material within the film tube are to be removed from this area (EP-A-0 165 819).

Aus der GB-A-1 278 562 sind ein Verfahren und eine Vorrichtung gemäß den Oberbegriffen der Ansprüche 1 und 6 bekannt, bei denen die Verpackung im Bereich einer Verschlußnaht durch bewegbare Backen mechanisch im Sinne einer Vibration beaufschlagt wird. Diese Art der Vibrationserzeugung ist nachteilig, da mechanische Bauteile unmittelbar im Bereich der Verpackung bewegt werden. Die Möglichkeit der Verletzung des Packungsguts sowie der Verpackung selbst ist relativ groß.From GB-A-1 278 562 a method and a device according to the preambles of claims 1 and 6 are known, in which the packaging in the area of a closure seam is mechanically acted upon by movable jaws in the sense of a vibration. This type of vibration generation is disadvantageous because mechanical components are moved directly in the area of the packaging. The possibility of damage to the packaged goods and the packaging itself is relatively large.

Der Erfindung liegt die Aufgabe zugrunde, die beschriebene Verpackungsweise von insbesondere empfindlichen Schüttgütern weiter zu verbessern. Auf möglichst schonende Weise soll erreicht werden, daß im Bereich der anzubringenden Verschlußnaht der Verpackung keine Rückstände des Verpackungsguts vorhanden sind.The object of the invention is to further improve the described manner of packaging particularly sensitive bulk goods. In a way that is as gentle as possible, the aim is to ensure that no residues of the packaging material are present in the area of the sealing seam of the packaging to be attached.

Zur Lösung dieser Aufgabe ist das erfindungsgemäße Verfahren dadurch gekennzeichnet, daß das Schüttgut und/oder die Verpackung berührungslos durch Luftschwingungen zum Schwingen gebracht werden. Durch die Schwingungen wird das Verpackungsgut schneller in die Verpackung eingeführt. Dabei kommt es auch auf eine besonders schonende Weise zur Beseitigung von Rückständen des Verpackungsguts aus dem oberen Bereich der Verpackung (Schlauchbeutel), so daß hier anschließend die quergerichtete Verschlußnaht durch Siegeln angebracht werden kann.To achieve this object, the method according to the invention is characterized in that the bulk material and / or the packaging are caused to vibrate without contact by air vibrations. Due to the vibrations, the packaged goods are introduced into the packaging more quickly. This also removes residues of the packaging material from the upper area of the packaging (tubular bag) in a particularly gentle manner, so that the transverse sealing seam is subsequently sealed here can be attached.

Die Aufgabe wird weiterhin durch die Vorrichtung gemäß Anspruch 6 gelöst. Die Vibration im Verpackungsgut bzw. in der Kunststoffolie des Schlauchbeutels wird durch berührungslos wirkende Schwingungs- oder Vibrationsquellen erzeugt. Diese können taktweise wirksam werden, insbesondere während einer Schlußphase des Verpackungsvorgangs oder lediglich unmittelbar danach vor Anbringen der Verschlußnaht.The object is further achieved by the device according to claim 6. The vibration in the packaged goods or in the plastic film of the tubular bag is generated by non-contact vibration or vibration sources. These can take effect intermittently, in particular during a final phase of the packaging process or only immediately afterwards before the closure seam is attached.

Die Luftschwingungen können durch ausschließlich mechanisch arbeitende Generatoren, wie Kompressoren, erzeugt werden. Besonders vorteilhaft sind elektrodynamische Schwingungsgeneratoren, die nach dem Prinzip eines Lautsprechers arbeiten. Eine Membran wird elektrodynamisch zum Schwingen gebracht. Die Schwingungen werden über eine Luftsäule weitergeleitet und auf das benachbarte Verpackungsmaterial, nämlich auf den Folienschlauch bzw. Folienbeutel übertragen. Dadurch kommt es zu Schwingungen auch innerhalb des Folienbeutels, nämlich im Verpackungsgut.The air vibrations can only be generated by mechanically working generators, such as compressors. Electrodynamic vibration generators that operate on the principle of a loudspeaker are particularly advantageous. A membrane is made to vibrate electrodynamically. The vibrations are passed on via an air column and transferred to the adjacent packaging material, namely to the film tube or film bag. As a result, vibrations also occur within the film bag, namely in the packaged goods.

Weitere Einzelheiten der Erfindung beziehen sich auf die Ausgestaltung einer Vorrichtung zum Verpacken von empfindlichen, sperrigen Schüttgütern. Ein Ausführungsbeispiel dieser Vorrichtung wird nachfolgend anhand der Zeichnungen näher erläutert. Es zeigt:

Fig. 1
eine Vorrichtung zum Verpacken von Schüttgütern, wie Kartoffel-Chips, in schematischer Seitenansicht,
Fig. 2
eine Einzelheit der Vorrichtung gemäß Fig. 1 im Vertikalschnitt bei vergrößertem Maßstab,
Fig. 3
einen Horizontalschnitt durch die Einzelheit gemäß Fig. 2 in der Schnittebene III-III,
Fig. 4
eine Ansicht IV der Einzelheit gemäß Fig. 2.
Further details of the invention relate to the design of a device for packaging sensitive, bulky bulk goods. An embodiment this device is explained in more detail below with reference to the drawings. It shows:
Fig. 1
a device for packaging bulk goods, such as potato chips, in a schematic side view,
Fig. 2
1 shows a detail of the device according to FIG. 1 in vertical section on an enlarged scale,
Fig. 3
2 in the sectional plane III-III,
Fig. 4
a view IV of the detail of FIG .. 2

Das in den Zeichnungen dargestellte Ausführungsbeispiel bezieht sich auf die Herstellung von Beutelverpackungen, nämlich Schlauchbeuteln 10. Die Schlauchbeutel dienen zur Aufnahme von Schüttgütern, z.B. von Kartoffel-Chips.The embodiment shown in the drawings relates to the production of bag packaging, namely tubular bags 10. The tubular bags are used to hold bulk materials, e.g. of potato chips.

Die Schlauchbeutel 10 werden in konventioneller Weise aus einer Folienbahn 11 aus thermisch siegelbarem Kunststoff gefertigt. Die Folienbahn 11 wird dabei von einer Bobine 12 abgezogen und einer Verpackungsstation 13 zugeführt. Im Bereich derselben wird aus der ursprünglich flachen Folienbahn 11 ein Folienschlauch 14 geformt. Zu diesem Zweck läuft die Folienbahn 11 über ein Formstück 15, welches den Folienschlauch 14 mit einander überdeckenden Längslappen formt. Im Bereich derselben wird durch ein Siegelwerkzeug 16 eine Längsnaht angebracht, so daß der im Querschnitt geschossene Folienschlauch 14 entsteht. Dieser wird in Abwärtsrichtung gefördert, und zwar durch seitliche Förderbänder 17.The tubular bags 10 are manufactured in a conventional manner from a film web 11 made of thermally sealable plastic. The film web 11 is pulled off a bobbin 12 and fed to a packaging station 13. In the area thereof, a film tube 14 is formed from the originally flat film web 11. For this purpose, the film web 11 runs over a shaped piece 15, which forms the film tube 14 with overlapping longitudinal tabs. In the area of the latter, a longitudinal seam is made by a sealing tool 16, so that the film tube 14, which is shot in cross section, is created. This is conveyed in the downward direction, specifically by side conveyor belts 17.

Der Packungsinhalt, z.B. Kartoffel-Chips, wird über einen Fülltrichter 18 zugeführt. Das Material gelangt in ein aufrechtes Füllrohr 19. Dieses führt in den Folienschlauch 14, der das Füllrohr 19 umgibt.The package contents, e.g. Potato chips, is fed via a hopper 18. The material arrives in an upright filling tube 19. This leads into the film tube 14 which surrounds the filling tube 19.

Der Packungsinhalt wird portionsweise dosiert zugeführt. Das Verpackungsgut gelangt unter Eigengewicht durch das Füllrohr 19 hindurch in einen freien Abschnitt des Folienschlauchs 14 unterhalb des Füllrohrs 19. Am unteren Ende des Folienschlauchs 14 ist eine Bodennaht 20 quer zur Längserstreckung des Folienschlauchs 14 angebracht. Im Bereich der Bodennaht 20 wird der gefüllte Schlauchbeutel 10 vom Folienschlauch 14 abgetrennt durch quergerichtete Schneidwerkzeuge.The contents of the pack are added in portions. The goods to be packaged pass under their own weight through the filling tube 19 into a free section of the film tube 14 below the filling tube 19. At the lower end of the film tube 14, a bottom seam 20 is applied transversely to the longitudinal extent of the film tube 14. In the area of the bottom seam 20, the filled tubular bag 10 is separated from the tubular film 14 by transverse cutting tools.

Die Bodennaht 20 wird durch umlaufende Siegelbacken 21, 22 hergestellt. Bei dem vorliegenden Ausführungsbeispiel sind zwei Paare von synchron umlaufenden Siegelbacken 21, 22 im Bereich einer Siegelstation angeordnet. Die Siegelbacken 21, 22 sind jeweils an einem gemeinsamen Tragarm 23 angebracht, der auf einer Welle 24 gelagert ist und drehend angetrieben wird. Die Siegelbacken 21, 22 an den Enden der Tragarme 23 sind schwenkbar gelagert und in einer geschlossenen Kurvenbahn 25 geführt. Die Siegelbacken 21, 22 laufen mit Führungsrollen 26, 27 in der Kurvenbahn 25. Diese ist so ausgebildet, daß benachbart zum Folienschlauch 14 bzw. Schlauchbeutel 10 ein geradliniger, aufrechter Führungsabschnitt 28 gebildet ist. Im Bereich desselben werden zwei Siegelbacken 21, 22 zu beiden Seiten des Folienschlauchs 14 von oben nach unten bewegt unter örtlichem Zusammendrücken des Folienschlauchs 14 und zur Bildung der Bodennaht 20. Diese hat doppelte Breite, so daß in der Mitte ein Trennschnitt ausgeführt wird. Es entsteht dadurch eine obere Verschlußnaht eines fertigen, gefüllten Schlauchbeutels und zugleich eine Bodennaht 20 am unteren Ende des Folienschlauchs 14 für den nächstfolgenden Schlauchbeutel 10.The bottom seam 20 is produced by circumferential sealing jaws 21, 22. In the present exemplary embodiment, two pairs of synchronously rotating sealing jaws 21, 22 are arranged in the region of a sealing station. The sealing jaws 21, 22 are each attached to a common support arm 23 which is mounted on a shaft 24 and is driven in rotation. The sealing jaws 21, 22 at the ends of the support arms 23 are pivotally mounted and guided in a closed curved path 25. The sealing jaws 21, 22 run with guide rollers 26, 27 in the cam track 25. This is designed such that a straight, upright guide section 28 is formed adjacent to the film tube 14 or tubular bag 10. In the area of the same, two sealing jaws 21, 22 are moved on both sides of the film tube 14 from top to bottom with local compression of the film tube 14 and to form the bottom seam 20. This has a double width, so that a separating cut is carried out in the middle. This creates an upper closure seam of a finished, filled tubular bag and at the same time a bottom seam 20 at the lower end of the tubular film 14 for the next tubular bag 10.

Nach Anbringen einer Bodennaht 20 am unteren Ende des Folienschlauchs 14 wird jeweils eine Portion des Beutelinhalts zugeführt. Während dieses Füllvorgangs wird mindestens zeitweilig der Folienschlauch 14 und/oder der Beutelinhalt zum Vibrieren gebracht. Dadurch wird eine gewisse Orientierung und Verdichtung des Beutelinhalts bewirkt. Insbesondere wird aber die Vibration gegen Ende des Füllvorgangs und unmittelbar danach erzeugt, nämlich vor dem Anbringen der oberen Verschlußnaht (mit neuer Bodennaht 20). Durch den Vibrations- bzw. Rütteleffekt wird erreicht, daß der Bereich zum Anbringen der Bodennaht 20 und oberen Verschlußnaht frei von zu verpackendem Gut bleibt. Dadurch können die quergerichteten Nähte durch Siegeln störungsfrei angebracht werden.After making a bottom seam 20 at the lower end of the film tube 14, a portion of the bag contents is supplied. During this filling process, the film tube 14 and / or the contents of the bag are made to vibrate at least temporarily. This causes a certain orientation and compression of the contents of the bag. In particular, however, the vibration is generated towards the end of the filling process and immediately afterwards, namely before the upper closure seam is attached (with a new bottom seam 20). The vibration or vibrating effect ensures that the area for attaching the bottom seam 20 and the top closure seam remains free of goods to be packaged. This enables the transverse seams to be attached without problems by sealing.

Bei dem vorliegenden Ausführungsbeispiel ist zu diesem Zweck oberhalb der durch die Siegelbacken 21, 22 gebildeten Siegelstation für die Bodennaht und Verschlußnaht ein Schwingungs- bzw. Vibrationsaggregat angeordnet, welches zeitweilig Schwingungen im Folienschlauch 14 und/oder im Verpackungsgut erzeugt. Das Vibrationsaggregat besteht hier aus zwei einander gegenüberliegenden Schwingungsgeneratoren 29, 30. Diese befinden sich zu beiden Seiten des Folienschlauchs 14. Im Bereich der Schwingungsgeneratoren 29, 30 ist eine hülsenartige Führung 31 gebildet, durch die der Folienschlauch 14 hindurchgeleitet wird. Die oben und unten offene, rohrförmige Führung 31 kann im Querschnitt kreisförmig, oval, quadratisch oder - wie im vorliegenden Ausführungsbeispiel gemäß Fig. 3 - rechteckig ausgebildet sein.For this purpose, in the present exemplary embodiment, an oscillation or vibration unit is arranged above the sealing station for the bottom seam and closing seam formed by the sealing jaws 21, 22, which temporarily generates vibrations in the film tube 14 and / or in the packaged goods. The vibration unit here consists of two mutually opposite vibration generators 29, 30. These are located on both sides of the film tube 14. In the area of the vibration generators 29, 30, a sleeve-like guide 31 is formed, through which the film tube 14 is passed. The tubular guide 31, which is open at the top and bottom, can be circular, oval, square or - as in the present exemplary embodiment according to FIG. 3 - rectangular in cross section.

Die Schwingungsgeneratoren 29, 30 sind an der Führung 31 seitlich befestigt, und zwar mit trichterförmigen Gehäusen 32. Die Führung 31 ist im Bereich der Schwingungsgeneratoren 29, 30 jeweils mit einer Öffnung 33 versehen, die den Durchtritt von Luftwellen von den Schwingungsgeneratoren 29, 30 zum Folienschlauch 14 ermöglicht. Ränder 34 der Öffnungen 33 sind nach außen geformt, um Beschädigungen des Folienschlauchs 14 zu vermeiden.The vibration generators 29, 30 are laterally attached to the guide 31, with funnel-shaped housings 32. The guide 31 is provided in the area of the vibration generators 29, 30 with an opening 33, which allows air waves from the vibration generators to pass through 29, 30 to the film tube 14. Edges 34 of the openings 33 are shaped outwards in order to avoid damage to the film tube 14.

Die Schwingungsgeneratoren 29, 30 arbeiten im vorliegenden Ausführungsbeispiel auf elektrodynamischer Basis, nach Art eines Lautsprechers. Dabei wird eine Membran 35 in Schwingungen versetzt. Diese erzeugt ihrerseits Schwingungen in der Luftsäule, die durch die Öffnungen 33 hindurchgeleitet werden zum Folienschlauch 14 und zum Verpackungsgut innerhalb desselben. Die erzeugten Schwingungen liegen im unteren Frequenzbereich, z.B. unterhalb 1000 Hz.The vibration generators 29, 30 work in the present exemplary embodiment on an electrodynamic basis, in the manner of a loudspeaker. A membrane 35 is set in vibration. This in turn generates vibrations in the air column, which are passed through the openings 33 to the film tube 14 and to the packaging material within the same. The vibrations generated are in the lower frequency range, e.g. below 1000 Hz.

Schwingungen im Verpackungsmaterial bzw. Verpackungsgut werden nur während einer Teilphase des Füllvorgans erzeugt. Die Schwingungsgeneratoren 29, 30 werden demnach taktweise eingeschaltet, mindestens unmittelbar vor der Herstellung der oberen Verschlußnaht eines gefüllten Schlauchbeutels 10 (einschließlich Bodennaht 20). Die Vibration kann aber auch bereits während des Einfüllens des Packungsgutes erzeugt werden. Die durch die Schwingungsgeneratoren 29 einerseits und 30 andererseits erzeugten Schwingungen können phasengleich oder zueinander phasenversetzt sein.Vibrations in the packaging material or goods are only generated during a partial phase of the filling process. The vibration generators 29, 30 are accordingly switched on in cycles, at least immediately before the upper closure seam of a filled tubular bag 10 (including the bottom seam 20) is produced. The vibration can also be generated while the packaged goods are being filled. The vibrations generated by the vibration generators 29 on the one hand and 30 on the other hand can be in phase or out of phase with one another.

Das Füllrohr 19 endet unmittelbar oberhalb der Schwingungsgeneratoren 29, 30 bzw. der Führung 31.The filling pipe 19 ends immediately above the vibration generators 29, 30 or the guide 31.

Die gesamte Vorrichtung ist, wie Fig. 1 zeigt, an einem Maschinengestell 36 gelagert.As shown in FIG. 1, the entire device is mounted on a machine frame 36.

Claims (8)

  1. Process for packaging bulk materials, in particular large-format foodstuffs and luxury foods in piece form, such as potato crisps, in packaging containers, in particular tube bags (10, 11) consisting of plastic sheeting, the bulk materials, before the packaging is closed, being made to shake or vibrate, during introduction into the packaging and/or when it is situated within the same, in order to promote the filling process and/or the compactness of the bulk materials within the packaging, characterized in that the bulk materials and/or the packaging (10,11) are made to oscillate by air oscillations in a contactless manner.
  2. Process according to Claim 1, characterized in that, during an end phase of the filling procedure or directly after that, the bulk materials and/or the packaging (10, 11) are made to oscillate in order to remove bulk-material residues from the region of an introduction opening which is to be provided with a closure seam, and in that the bulk materials and/or the packaging are made to oscillate preferably temporarily or cyclically.
  3. Process according to Claim 1 or 2, characterized in that air oscillations act, from at least two mutually opposite sides of the packaging (10, 11) or of the sheeting tube (14), on said packaging or said tube.
  4. Process according to Claim 1 and one or more of the further claims, characterized in that air oscillations are generated by at least one electrodynamic oscillation generator (29, 30) - in accordance with the loudspeaker principle.
  5. Process according to Claim 4, characterized in that in-phase or out-of-phase oscillations are generated by the oscillation generators (29, 30).
  6. Apparatus for packaging bulk materials, in particular foodstuffs and luxury foods in the form of large pieces, such as potato crisps, in packaging, in particular in tube bags (10) consisting of plastic sheeting, in a packaging station (13), having an introduction member, in particular a filling tube (19), for conveying the bulk materials in free fall into the upwardly open packaging (10), which, after the filling procedure is complete, can be closed transversely, in particular by a transversely directed closure seam (20) produced by thermal sealing, and having at least one oscillation or vibration source in the region of the packaging station (13) in order to generate vibrations of the packaging (10) or of the sheeting tube (14) and/or of the bulk materials during the filling procedure or thereafter, characterized in that the oscillation or vibration source is an air-oscillation generator (29, 30) which acts in a contactless manner on the packaging (10) or the sheeting tube (14).
  7. Apparatus according to Claim 6, characterized in that, when the tube bags (10) are filled in the packaging station (13), at least one oscillation generator (29, 30) is arranged on both sides of a sheeting tube (14), intended for producing the tube bag (10), or of the tube bag (10) itself.
  8. Apparatus according to Claim 7, characterized in that the oscillation generators (29, 30) are arranged in the region of the sleeve-type guide (31) for the sheeting tube (14), the guide (31) being provided with openings (33) adjacent to the oscillation generators (29, 30).
EP91110440A 1990-07-30 1991-06-25 Method and apparatus for packaging bulk materials Expired - Lifetime EP0469288B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4024984 1990-07-30
DE4024984A DE4024984A1 (en) 1990-07-30 1990-07-30 METHOD AND DEVICE FOR PACKAGING Bulk Goods

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EP0469288A1 EP0469288A1 (en) 1992-02-05
EP0469288B1 true EP0469288B1 (en) 1994-09-07

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EP91110440A Expired - Lifetime EP0469288B1 (en) 1990-07-30 1991-06-25 Method and apparatus for packaging bulk materials

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US (1) US5125213A (en)
EP (1) EP0469288B1 (en)
JP (1) JPH04239439A (en)
BR (1) BR9102969A (en)
CA (1) CA2045913A1 (en)
DE (2) DE4024984A1 (en)

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CN102858637B (en) * 2010-04-30 2014-08-06 Ima工业有限公司 Machine with vertical axis for making filter bags with infusion products

Also Published As

Publication number Publication date
DE59102821D1 (en) 1994-10-13
EP0469288A1 (en) 1992-02-05
DE4024984A1 (en) 1992-02-06
US5125213A (en) 1992-06-30
BR9102969A (en) 1992-02-18
CA2045913A1 (en) 1992-01-31
JPH04239439A (en) 1992-08-27

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