EP0116062B1 - Method and device for wrapping articles of substantially flat shape in the food industry, particularly chocolate slabs or sticks, with a wrapping sheet - Google Patents

Method and device for wrapping articles of substantially flat shape in the food industry, particularly chocolate slabs or sticks, with a wrapping sheet Download PDF

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Publication number
EP0116062B1
EP0116062B1 EP83902431A EP83902431A EP0116062B1 EP 0116062 B1 EP0116062 B1 EP 0116062B1 EP 83902431 A EP83902431 A EP 83902431A EP 83902431 A EP83902431 A EP 83902431A EP 0116062 B1 EP0116062 B1 EP 0116062B1
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EP
European Patent Office
Prior art keywords
tube
film
foil
articles
driving components
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Expired
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EP83902431A
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German (de)
French (fr)
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EP0116062A1 (en
Inventor
Hans Lesch
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Otto Hansel GmbH
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Otto Hansel GmbH
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Priority to AT83902431T priority Critical patent/ATE23504T1/en
Publication of EP0116062A1 publication Critical patent/EP0116062A1/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
    • 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
    • B65B9/06—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it
    • B65B9/067—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it the web advancing continuously

Definitions

  • the invention relates to a method for wrapping substantially flat pieces of goods in the luxury or food industry, in particular chocolate bars or bars with a packaging film, and at the same time shows a device that carries out the method.
  • tube machines of the aforementioned type have been used for packaging all types of packaging goods, as are described, for example, in US Pat. No. 3,283,470.
  • the packaging film runs in the form of a film web from a supply roll, on which the parts to be wrapped, successively spaced apart, are fed by drivers which are seated on a transport member moving in the same sense as the film web, whereupon the film around the respective parts was put around and welded between the parts at their transverse edges.
  • the object of the invention is, however, to remedy these deficiencies and to provide a method and a device which allow a hose packaging to be carried out, in particular for the internal wrapping of flat articles, such as chocolate bars or bars, with a high machine output without any particular stress on the respective packaging film and economical consumption of packaging material can be achieved.
  • packaging is to be produced in which a longitudinal sealing seam is required on the narrow side and foils, in particular thin and heat-sealable metal foils are used, which cannot be processed over the usual shape shoulders of the usual tube machines, with a particularly high tightness of the sealing seams being guaranteed.
  • the transport of the film webs is brought about by a temporarily direct connection of the film web and drivers.
  • the film web is temporarily jammed for the purpose of its transport with the drivers that advance to the enveloping parts.
  • the packaging film web in particular aluminum film, is formed lengthwise according to the invention into a casing material tube which is U-shaped in cross section, open on one side and accommodating the parts to be wrapped. This is grasped by conveyor belts rotating at approximately the same speed and taken along by at least one of the two legs of the U-shaped film tube enclosing the goods and the intervening drivers clamped between the drivers and acting on the conveyor belts and moving with them and taken along.
  • the packaging film in particular an aluminum film, is withdrawn from the supply at the same time as the article is handed over and bent flat around the row of articles in a U-shape.
  • a device for carrying out this method is characterized in that the inlet of the goods to be wrapped and the inflow of the film web is followed by a tube former which, from the film web running off the supply roll, has a cross-sectionally U-shaped film tube which extends around the goods and is open on the side forms, the transport member, running next to the film tube, is provided with drivers which extend from the side into the tube opening and at least on one side of the film tube a pressure device running along with the speed of the drivers is provided, which on one side of the tube profile pushes the driver.
  • the tube builder work together with a pair of conveyor belts, which have a U-shaped film tube on both sides, a moving pressure device being provided on both sides of the film tube, which, under spring force, presses the conveyor belt strand against the film tube between the legs of the cross-sectionally U-shaped film tube, also moving driver presses.
  • the film tube is conveyed in a U-shape lying flat, the pair of conveyor belts being formed from a carrier belt for the film tube and a support band lying on the top of the film tube. Both the driver transport and the conveyor belt pair are expediently driven in order to ensure good conveyance of the free-running conveyor belt or the film tube formed therefrom.
  • the pieces of goods to be packaged are supplied on a belt 2 coming from the manufacturing device.
  • confectionery items such as chocolate bars, chocolate bars or the like 1
  • all other, preferably flat, articles from the food industry or cigar or cigarette industry or the like can also be packaged in the same way.
  • the transport of the goods 1 on the feed belt 2 is supported by drivers 3, which are arranged one behind the other on an inevitably driven, operating at the same speed transport member in the distance adapted to the size of the goods.
  • the transport member 3 a for the drivers runs next to the conveyor belt, the drivers 3 being held on the transport member 3 so as to be laterally displaceable in holders 3 b.
  • the laterally displaceable drivers extend over the entire width of the article 1 and run next to the conveyor belt 2 at the same speed as this.
  • the packaging film in the present case a heat-sealable aluminum film 5, is pulled off the supply roll 4 with the aid of a conveyor device to be described later.
  • the film strip is laid flat in a U-shaped manner as it enters a tube former around the articles 1 arriving one behind the other on the feed belt 2, without special molding units being necessary.
  • the carriers 1 keep the articles 1 at a distance from one another which is required for the subsequent closing process.
  • the article 1 and the packaging film 5 are moved at the same speed and drawn into the formed film tube, which is U-shaped in cross section, as can be seen from FIG. 5. Now the film tube 5 with the articles 1 enclosed therein is inserted between a pair of conveyor belts 6, 7 which rotates in the direction of the arrow and is formed from the lower carrier belt 6 and the support belt 7 resting on the top of the film tube 5.
  • the drivers 3 extend into the U-cross section of the hose 5, whereby they capture the workpiece 1 to be conveyed in its full width.
  • the film tube is transported synchronously with the drivers 3 with the aid of a pressure device 8, 9, 10, 11 and 22, respectively.
  • a pressure device 8, 9, 10, 11 and 22, respectively The mode of operation of such a device can be clearly seen from FIGS. 1 and 2. In these two representations, however, only one of the pressure devices is shown, which is on the top, i.e. H. with the support band 7, cooperates.
  • the pressure device arranged on the lower side and cooperating with the carrier tape 6 is designed in the same way.
  • the pressure devices consist of a conveyor in the form of a chain or belt 22, which is equipped with pressure rollers 8 and 9, respectively.
  • a pressure rail 10, which is acted upon by springs 11, is provided in the interior of the conveying member 22.
  • the pressure rollers 8 run along the pressure rail 10 and are at the same distance from each other as the drivers 3.
  • the pressure rollers 8 and 9 are pressed accordingly firmly on the drivers 3, the strand of the film tube 5 resting against it Band 7 and 6 together with the respective side of the film tube 5 is pressed onto the driver and clamped with it, so that the inevitably moved driver 3 can take the film tube and the parts forming the pressure device with it.
  • the packaging film is only slightly stressed by the surface clamping just described when peeling off, which allows the processing of the thinnest films.
  • the overlap of the film edge over the goods 1 can also be kept as small as is currently required for the subsequent closing process. This ensures a minimal consumption of film material.
  • the edges of the film tube extending beyond the articles are now welded or sealed together by heating rollers.
  • the heating rollers 12, 14 and 13 are pivoted away and can be completely removed from the area of the heat-sensitive articles, if necessary, so that there is no radiation on the articles.
  • pairs of rollers are provided in each case, with the pair of heating rollers 12 being followed by cooling roller pairs 13 and 14 for sealing, which permit an optimally sealed seam with the most economical use of material.
  • both the heating rollers and the cooling rollers are connected to known heating or cooling devices, which need not be described further here.
  • the film tube 5 with the articles 1 inserted into the division is guided exactly between the support band 6 and the support band 7.
  • the longitudinal seal seam is created as required on the lower or upper side using appropriate folding switches.
  • the film tube 5 with the articles 1 is carried by the guide bands 6 and 7.
  • the drivers 3 which convey the articles and the film tube were previously pulled out of the still unsealed film tube to the side, as was indicated in FIG. 4.
  • the method described here and the device operating according to the method can be used for all types of goods packaging, in particular, of course, for those goods which are sensitive to temperature and must therefore be packed.

Abstract

The method and device for wrapping substantially flat shape articles in the food industry, particularly chocolate slabs or sticks, with a wrapping sheet, should provide for a tubular wrapping, particularly to introduce flat articles such as chocolate slabs or sticks (1). A high efficiency of the machine, without any particular requirement as to the wrapping sheet (5), and an economical utilization of the wrapping material are achieved owing to the transport of the sheet by an intermittent connection of the sheet (5) and the driver (3).

Description

Die Erfindung betrifft ein Verfahren zum Umhüllen von im wesentlichen flachen Warenstücken der Genuß- oder Lebensmittelbranche, insbesondere Schokoladetafeln oder -riegel mit einer Verpackungsfolie und zeigt gleichzeitig eine das Verfahren durchführende Vorrichtung. Bisher wurden zum Verpacken von allen Arten von Verpackungsgütern sogenannte Schlauchmaschinen der vorgenannten Gattung verwendet, wie sie beispielsweise in der US-PS 3283470 beschrieben sind. Bei diesen läuft die Verpackungsfolie in Form einer Folienbahn von einer Vorratsrolle ab, auf der die zu umhüllenden Teile, im Abstand aufeinanderfolgend, durch Mitnehmer zugeführt werden, die auf einem im gleichen Sinn wie die Folienbahn bewegten Transportorgan sitzen, worauf die Folie um die jeweiligen Teile herumgelegt und zwischen den Teilen an ihren Querrändern verschweißt wurde. Eine im Prinzip gleiche Vorrichtung ist auch in der DE-OS 2 034 748 erläutert. Es besteht nur der Unterschied, daß die Trennung der aufeinanderfolgenden Warenstücke mittels eines besonderen Faltaggregates erfolgt, durch welches der maschinelle Aufwand erheblich vergrößert und die gesamte Anlage störanfälliger wird. In beiden Fällen müssen die verwendeten Kunststoffolien besonders fest und geschmeidig sein, weil sie bei der Verarbeitung über Formwerkzeuge der verschiedensten Art hinweggezogen werden müssen. Um die geforderte Dichtheit der Packung zu erreichen, mußte mit breiten Materialüberschlägen gearbeitet werden. Die Folge hiervon ist ein großer Verbrauch an teurem Verpackungsmaterial und eine relativ gringe Maschinenleistung. Besonders dünne und heißsiegelfähige Aluminiumfolie als Einschlagmaterial ließ sich hierbei kaum verwenden. Derartige Metallfolien sind aber gerade für die Verpackung von Süßwarenstücken, insbesondere Schokoladetafein oder -riegel besonders prädestiniert.The invention relates to a method for wrapping substantially flat pieces of goods in the luxury or food industry, in particular chocolate bars or bars with a packaging film, and at the same time shows a device that carries out the method. So far, so-called tube machines of the aforementioned type have been used for packaging all types of packaging goods, as are described, for example, in US Pat. No. 3,283,470. In these, the packaging film runs in the form of a film web from a supply roll, on which the parts to be wrapped, successively spaced apart, are fed by drivers which are seated on a transport member moving in the same sense as the film web, whereupon the film around the respective parts was put around and welded between the parts at their transverse edges. A device which is basically the same is also explained in DE-OS 2 034 748. There is only the difference that the consecutive pieces of goods are separated by means of a special folding unit, which considerably increases the mechanical outlay and makes the entire system more susceptible to faults. In both cases, the plastic films used must be particularly strong and supple because they have to be pulled over a wide variety of molds during processing. In order to achieve the required tightness of the packing, it was necessary to work with wide rollovers. The consequence of this is a large consumption of expensive packaging material and a relatively low machine performance. Particularly thin and heat-sealable aluminum foil as a wrapping material could hardly be used here. However, metal foils of this type are particularly predestined for the packaging of confectionery pieces, in particular chocolate bars or bars.

Aufgabe der Erfindung ist es aber, diese Mängel zu beheben und ein Verfahren und eine Vorrichtung zu schaffen, die es gestatten, eine Schlauchverpackung durchzuführen, insbesondere für den 'lnneneinschlag von Flachartikeln, wie Schokoladetafeln oder -riegel, wobei eine hohe Maschinenleistung ohne sonderliche Beanspruchung der jeweiligen Verpackungsfolie und ein sparsamer Verbrauch an Verpackungsmaterial erreichbar sind.The object of the invention is, however, to remedy these deficiencies and to provide a method and a device which allow a hose packaging to be carried out, in particular for the internal wrapping of flat articles, such as chocolate bars or bars, with a high machine output without any particular stress on the respective packaging film and economical consumption of packaging material can be achieved.

Vor allem sollen Verpackungen hergestellt werden, bei denen eine Längssiegelnaht an der Schmalseite gefordert wird und Folien, insbesondere dünne und heißsiegelfähige Metallfolien verwendet werden, die nicht über die üblichen Formschultern der gebräuchlichen Schlauchmaschinen zu verarbeiten sind, wobei eine besonders hohe Dichtigkeit der Verschlußnähte gewährleistet ist.Above all, packaging is to be produced in which a longitudinal sealing seam is required on the narrow side and foils, in particular thin and heat-sealable metal foils are used, which cannot be processed over the usual shape shoulders of the usual tube machines, with a particularly high tightness of the sealing seams being guaranteed.

Dies wird erfindungsgemäß dadurch erreicht, daß der Transport der Folienbahnen durch eine zeitweise unmittelbare Verbindung von Folienbahn und Mitnehmern bewirkt wird. Vorzugsweise wird dabei die Folienbahn zum Zwecke ihres Transportes mit den, die zum umhüllenden Teile vorschiebenden Mitnehmern zeitweise verklemmt. Die Verpackungsfolienbahn, insbesondere Aluminiumfolie, wird erfindungsgemäß der Länge nach zu einem im Querschnitt U-förmigen, einseitig offenen und die zu umhüllenden Teile aufnehmenden Hüllmaterialschlauch umgeformt. Dieser wird von, mit etwa gleicher Geschwindigkeit umlaufenden Förderbändern erfaßt und mitgenommen, indem mindestens einer der beiden Schenkel des U-förmig die Warenstücke und die dazwischenliegenden Mitnehmer umschließenden Folienschlauch zwischen die Mitnehmer und auf die Förderbänder einwirkende und mit diesen mitlaufende Andruckglieder eingespannt und mitgenommen.This is achieved according to the invention in that the transport of the film webs is brought about by a temporarily direct connection of the film web and drivers. Preferably, the film web is temporarily jammed for the purpose of its transport with the drivers that advance to the enveloping parts. The packaging film web, in particular aluminum film, is formed lengthwise according to the invention into a casing material tube which is U-shaped in cross section, open on one side and accommodating the parts to be wrapped. This is grasped by conveyor belts rotating at approximately the same speed and taken along by at least one of the two legs of the U-shaped film tube enclosing the goods and the intervening drivers clamped between the drivers and acting on the conveyor belts and moving with them and taken along.

Mit besonderem Vorteil wird die Verpackungsfolie, insbesondere eine Aluminiumfolie, gleichzeitig mit der Artikelübergabe vom Vorrat abgezogen und U-förmig flachliegend um die Artikelreihe herumgebogen.With particular advantage, the packaging film, in particular an aluminum film, is withdrawn from the supply at the same time as the article is handed over and bent flat around the row of articles in a U-shape.

Eine Vorrichtung zur Durchführung dieses Verfahrens kennzeichnet sich dadurch, daß dem Einlauf der zu umhüllenden Warenstücke und dem Zulauf der Folienbahn ein Schlauchbildner nachgeschaltet ist, der aus der von der Vorratsrolle ablaufenden Folienbahn einen im Querschnitt U-förmigen, um die Warenstücke herumreichenden, seitlich offenen Folienschlauch bildet, wobei das Transportorgan, neben dem Folienschlauch herlaufend, mit Mitnehmern versehen ist, die von der Seite her in die Schlauchöffnung hineinreichen und mindestens auf einer Seite des Folienschlauches eine mit der Geschwindigkeit der Mitnehmer mitlaufende Andruckvorrichtung vorgesehen ist, die die eine Seite des Schlauchprofiles auf die Mitnehmer drückt.A device for carrying out this method is characterized in that the inlet of the goods to be wrapped and the inflow of the film web is followed by a tube former which, from the film web running off the supply roll, has a cross-sectionally U-shaped film tube which extends around the goods and is open on the side forms, the transport member, running next to the film tube, is provided with drivers which extend from the side into the tube opening and at least on one side of the film tube a pressure device running along with the speed of the drivers is provided, which on one side of the tube profile pushes the driver.

Mit besonderem Vorteil arbeitet der Schlauchbildner mit einem, den im Querschnitt U-förmigen Folienschlauch auf beiden Seiten erfaßenden Förderbandpaar zusammen, wobei auf beiden Seiten des Folienschlauches jeweils eine mitlaufende Andruckvorrichtung vorgesehen ist, die unter Federkraft stehend das jeweils am Folienschlauch anliegende Förderband-Trum auf die zwischen die Schenkel des im Querschnitt U-förmigen Folienschlauches hineinreichenden, ebenfalls mitlaufenden Mitnehmer drückt. Der Folienschlauch wird U-förmig flachliegend gefördert, wobei das Förderbandpaar aus einem Tragband für den Folienschlauch und einem sich auf die Oberseite des Folienschlauches legenden Stützband gebildet ist. Zweckmäßig sind sowohl der Mitnehmertransport als auch das Förderbandpaar zwangsläufig angetrieben, um so eine gute Förderung des freilaufenden Förderbandes bzw. des daraus gebildeten Folienschlauches zu sichern.It is particularly advantageous for the tube builder to work together with a pair of conveyor belts, which have a U-shaped film tube on both sides, a moving pressure device being provided on both sides of the film tube, which, under spring force, presses the conveyor belt strand against the film tube between the legs of the cross-sectionally U-shaped film tube, also moving driver presses. The film tube is conveyed in a U-shape lying flat, the pair of conveyor belts being formed from a carrier belt for the film tube and a support band lying on the top of the film tube. Both the driver transport and the conveyor belt pair are expediently driven in order to ensure good conveyance of the free-running conveyor belt or the film tube formed therefrom.

Hinter dem Schlauchbildner sind schließlich Werkzeuge zum Versiegeln bzw. Verschweißen der seitlich überstehenden Folienränder und zum Umlegen derselben sowie eine Quersiegelstation und eine Trennvorrichtung zum Abteilen der einzelnen in die Aluminiumfolie eingehüllten und allseitig versiegelten Packstücke vom Schlauch vorgesehen.Finally, behind the hose builder Tools for sealing or welding the laterally projecting film edges and for folding them over, as well as a cross-sealing station and a separating device for dividing the individual packages wrapped in the aluminum foil and sealed on all sides from the tube are provided.

Der Erfindungsgedanke läßt die verschiedensten Ausführungsmöglichkeiten zu. Eine das erfindungsgemäße Verfahren durchführende Vorrichtung ist nachstehend beschrieben und in der anliegenden Zeichnung wiedergegeben, und zwar zeigen :

  • Figur 1 und 2 schematische Darstellungen zur Erläuterung des erfindungsgemäßen Problems,
  • Figur 3a bis 3c eine schematische Darstellung der Seitenansicht einer, das erfindungsgemäße Verfahren durchführenden Vorrichtung, wobei die Aneinanderreihung der Fig. 3a-3c eine einzige Darstellung bildet, die nachstehend als Fig. 3 bezeichnet ist und
  • Figur 4 bis 9 Schnitte nach den Linien A-B bis M-N durch Fig.3.
The idea of the invention allows a wide variety of design options. A device which carries out the method according to the invention is described below and shown in the accompanying drawing, namely
  • FIGS. 1 and 2 are schematic representations to explain the problem according to the invention,
  • 3a to 3c show a schematic illustration of the side view of an apparatus which carries out the method according to the invention, the sequence of FIGS. 3a-3c forming a single illustration, which is referred to below as FIG. 3 and
  • Figure 4 to 9 sections along the lines AB to MN through Fig.3.

Die zu verpackenden Warenstücke, insbesondere Süßwarenartikel, wie Schokoladetafeln, Schokoladeriegel od. dgl. 1, werden von der Herstellungsvorrichtung kommend auf einem Band 2 zugeführt. Selbstverständlich lassen sich aber auch alle anderen, vorzugsweise flache Artikel, aus der Lebensmittelbranche oder Zigarren- oder Zigarettenbranche od. ä. in der gleichen Weise verpacken.The pieces of goods to be packaged, in particular confectionery items, such as chocolate bars, chocolate bars or the like 1, are supplied on a belt 2 coming from the manufacturing device. Of course, all other, preferably flat, articles from the food industry or cigar or cigarette industry or the like can also be packaged in the same way.

Der Transport der Warenstücke 1 auf dem Zubringeband 2 wird durch Mitnehmer 3 unterstützt, die auf einem zwangsläufig angetriebenen, mit gleicher Geschwindigkeit arbeitenden Transportorgan in dem der Warengröße angepaßten Abstand hintereinander angeordnet sind. Das Transportorgan 3a für die Mitnehmer läuft neben dem Förderband, wobei die Mitnehmer 3 seitenverschiebbar in Halterungen 3b auf dem Transportorgan 3 gehalten sind. Auf jeden Fall reichen die seitlich verschiebbaren Mitnehmer über die gesamte Breite der Artikel 1 und laufen neben dem Förderband 2 her mit gleicher Geschwindigkeit wie dieses.The transport of the goods 1 on the feed belt 2 is supported by drivers 3, which are arranged one behind the other on an inevitably driven, operating at the same speed transport member in the distance adapted to the size of the goods. The transport member 3 a for the drivers runs next to the conveyor belt, the drivers 3 being held on the transport member 3 so as to be laterally displaceable in holders 3 b. In any case, the laterally displaceable drivers extend over the entire width of the article 1 and run next to the conveyor belt 2 at the same speed as this.

Die Verpackungsfolie, im vorliegenden Fall eine heißsiegelfähige Aluminiumfolie 5, wird von der Vorratsrolle 4 abgezogen mit Hilfe einer noch später zu beschreibenden Fördereinrichtung. Das Folienband wird beim Einlauf in einen Schlauchbildner U-förmig flachliegend um die auf dem Zuführband 2 im Abstand hintereinanderliegend ankommenden Artikel 1 herumgelegt, ohne daß hierbei besondere Formaggregate notwendig sind.The packaging film, in the present case a heat-sealable aluminum film 5, is pulled off the supply roll 4 with the aid of a conveyor device to be described later. The film strip is laid flat in a U-shaped manner as it enters a tube former around the articles 1 arriving one behind the other on the feed belt 2, without special molding units being necessary.

Die Artikel 1 werden von den Mitnehmern 3 in dem Abstand voneinander gehalten, der für den späteren Verschließvorgang benötigt wird. Die Artikel 1 und die Verpackungsfolie 5 werden mit gleicher Geschwindigkeit bewegt und in den gebildeten, im Querschnitt U-förmigen Folienschlauch eingezogen, wie dies aus Fig. 5 erkennbar ist. Nunmehr wird der Folienschlauch 5 mit den darin eingeschlossenen Artikeln 1 zwischen ein Förderbandpaar 6, 7 eingeführt, welches in der eingezeichneten Pfeilrichtung umläuft und aus dem unteren Tragband 6 und den auf der Oberseite des Folienschlauches 5 aufliegenden Stützband 7 gebildet ist.The carriers 1 keep the articles 1 at a distance from one another which is required for the subsequent closing process. The article 1 and the packaging film 5 are moved at the same speed and drawn into the formed film tube, which is U-shaped in cross section, as can be seen from FIG. 5. Now the film tube 5 with the articles 1 enclosed therein is inserted between a pair of conveyor belts 6, 7 which rotates in the direction of the arrow and is formed from the lower carrier belt 6 and the support belt 7 resting on the top of the film tube 5.

Für die Bandführung im Einlauf sind Führungswalzen 21 vorgesehen, von denen die obere, mit dem Stützband 7 zusammenarbeitenden Walze 21 durch Federn 21a beaufschlagt ist,For the belt guide in the inlet guide rollers 21 are provided, of which the upper roller 21, which cooperates with the support belt 7, is acted upon by springs 21a,

Wie aus Figuren 6 und 7 gut erkennbar ist, reichen die Mitnehmer 3 in den U-Querschnitt des Schlauches 5 hinein, wobei sie das zu fördernde Werkstück 1 in voller Breite erfassen.As can be clearly seen from FIGS. 6 and 7, the drivers 3 extend into the U-cross section of the hose 5, whereby they capture the workpiece 1 to be conveyed in its full width.

Der Transport des Folienschlauches erfolgt synchron mit den Mitnehmern 3 unter Zuhilfenahme jeweils einer Andruckvorrichtung 8, 9, 10, 11 und 22. Die Wirkungsweise einer solchen ist aus den Figuren 1 und 2 deutlich erkennbar. In diesen beiden Darstellungen ist jedoch nur eine der Andruckvorrichtungen wiedergegeben, die auf der Oberseite, d. h. mit dem Stützband 7, zusammenarbeitet. Die auf der unteren Seite angeordnete mit dem Tragband 6 zusammenarbeitende Andruckvorrichtung ist in gleicher Weise ausgebildet. Auf jeden Fall bestehen die Andruckvorrichtungen aus einem Förderorgan in Form einer Kette oder Bandes 22, welches mit Druckrollen 8 bzw. 9 besetzt ist. Im Innern des Förderorganes 22 ist eine Andruckschiene 10 vorgesehen, die durch Federn 11 beaufschlagt wird. Die Andruckrollen 8 laufen an der Andruckschiene 10 entlang und haben den gleichen Abstand voneinander wie die Mitnehmer 3. Beim Entlanglaufen an der Andruckschiene 10 werden die Druckrollen 8 bzw. 9 entsprechend fest auf die Mitnehmer 3 gedrückt, wobei das an den Folienschlauch 5 anliegende Trum des Bandes 7 bzw. 6 zusammen mit der jeweiligen Seite des Folienschlauches 5 auf die Mitnehmer gedrückt und mit diesen verklemmt wird, so daß die zwangsläufig bewegten Mitnehmer 3 den Folienschlauch und die die Andruckvorrichtung bildenden Teile mitnehmen können. Die Verpackungsfolie wird durch die eben beschriebene Flächenklemmung beim Abziehen nur ganz geringfügig beansprucht, was die Verarbeitung dünnster Folien gestattet.The film tube is transported synchronously with the drivers 3 with the aid of a pressure device 8, 9, 10, 11 and 22, respectively. The mode of operation of such a device can be clearly seen from FIGS. 1 and 2. In these two representations, however, only one of the pressure devices is shown, which is on the top, i.e. H. with the support band 7, cooperates. The pressure device arranged on the lower side and cooperating with the carrier tape 6 is designed in the same way. In any case, the pressure devices consist of a conveyor in the form of a chain or belt 22, which is equipped with pressure rollers 8 and 9, respectively. A pressure rail 10, which is acted upon by springs 11, is provided in the interior of the conveying member 22. The pressure rollers 8 run along the pressure rail 10 and are at the same distance from each other as the drivers 3. When running along the pressure rail 10, the pressure rollers 8 and 9 are pressed accordingly firmly on the drivers 3, the strand of the film tube 5 resting against it Band 7 and 6 together with the respective side of the film tube 5 is pressed onto the driver and clamped with it, so that the inevitably moved driver 3 can take the film tube and the parts forming the pressure device with it. The packaging film is only slightly stressed by the surface clamping just described when peeling off, which allows the processing of the thinnest films.

Andererseits kann die Überlappung des Folienrandes über die Warenstücke 1 hinaus so gering gehalten werden, wie es für den sich nunmehr anschließenden Verschließvorgang gerade benötigt wird. Damit ist ein Minimalverbrauch an Folienmaterial sichergestellt.On the other hand, the overlap of the film edge over the goods 1 can also be kept as small as is currently required for the subsequent closing process. This ensures a minimal consumption of film material.

Die über die Artikel hinausreichenden Ränder des Folienschlauches werden nunmehr durch Heizwalzen miteinander verschweißt bzw. versiegelt. Die Heizwalzen 12, 14 und 13 sind wegschwenkbar gelagert und können bei Bedarf völlig aus dem Bereich der hitzeempf-indlichen Artikel entfernt werden, damit keinerlei Abstrahlung auf die Artikel erfolgt. Wie ersichtlich, sind jeweils Walzenpaare vorgesehen, wobei dem Heizwalzenpaar 12 für die Versiegelung Kühlwalzenpaare 13 und 14 nachgeschaltet sind, die eine optimale dichte Siegelnaht bei sparsamstem Materialverbrauch gestatten.The edges of the film tube extending beyond the articles are now welded or sealed together by heating rollers. The heating rollers 12, 14 and 13 are pivoted away and can be completely removed from the area of the heat-sensitive articles, if necessary, so that there is no radiation on the articles. As can be seen, pairs of rollers are provided in each case, with the pair of heating rollers 12 being followed by cooling roller pairs 13 and 14 for sealing, which permit an optimally sealed seam with the most economical use of material.

Selbstverständlich sind sowohl die Heizwalzen als auch die Kühlwalzen an an sich bekannte Heiz- oder Kühleinrichtungen angeschlossen, was hier nicht weiter beschrieben zu werden braucht.Of course, both the heating rollers and the cooling rollers are connected to known heating or cooling devices, which need not be described further here.

Beim Verschließvorgang wird der Folienschlauch 5 mit den auf Teilung eingebrachten Artikeln 1 zwischen Auflageband 6 und Stützband 7 exakt geführt. Die Längssiegelnaht wird je nach Bedarf auf der unteren oder oberen Seite mittels entsprechender Faltweichen angelegt. Auch hierbei wird der Folienschlauch 5 mit den Artikeln 1 von den Führungsbändern 6 und 7 getragen. Selbstverständlich wurden vorher die die Artikel und den Folienschlauch fördernden Mitnehmer 3 nach der Seite hin aus dem noch unverschlossenen Folienschlauch herausgezogen, wie dies in Fig. 4 angedeutet wurde.During the closing process, the film tube 5 with the articles 1 inserted into the division is guided exactly between the support band 6 and the support band 7. The longitudinal seal seam is created as required on the lower or upper side using appropriate folding switches. Here too, the film tube 5 with the articles 1 is carried by the guide bands 6 and 7. Of course, the drivers 3 which convey the articles and the film tube were previously pulled out of the still unsealed film tube to the side, as was indicated in FIG. 4.

Die in dem Folienschlauch 5 liegenden exakt auf Abstand geführten Artikel 1 laufen schließlich der Quersiegelstation 15, 16 zu, wobei die umlaufenden Siegelwerkzeuge 15, 16 den Folienschlauch 5 zusammendrücken und unter Hitzeeinwirkung versiegeln. Unmittelbar anschließend läuft der Packstrom zwischen Kühlbacken 17, 18 ein, die den Folienschlauch 5 im Bereich der Quersiegelnähte erfassen und während des Durchlaufens zusammenpressen. Erst dann erfolgt in an sich bekannter Weise das Abtrennen der einzeln allseitig dicht im Folienmaterial eingesiegelten Artikel vom Packstrom.The articles 1 lying exactly spaced in the film tube 5 finally run to the transverse sealing station 15, 16, the circumferential sealing tools 15, 16 compressing the film tube 5 and sealing them under the action of heat. Immediately afterwards, the pack flow runs in between cooling jaws 17, 18, which grip the film tube 5 in the region of the transverse sealing seams and press it together during the passage. Only then, in a manner known per se, is the separation of the articles individually sealed on all sides in the film material from the packing stream.

Das hier beschriebene Verfahren und die nach dem Verfahren arbeitende Vorrichtung läßt sich für alle Arten von Warenverpackungen, insbesondere natürlich für solche Warenstücke verwenden, die temperaturempf-indlich sind und damit verpackt werden müssen.The method described here and the device operating according to the method can be used for all types of goods packaging, in particular, of course, for those goods which are sensitive to temperature and must therefore be packed.

Dies gilt insbesondere für die Verpackung von Lebensmitteln, Genußmitteln, insbesondere Schokolade und Süßwaren, aber auch für Tabakwaren und andere nicht zu Lebens- und Genußmitteln gehörige Warenstücke.This applies in particular to the packaging of food, luxury goods, in particular chocolate and confectionery, but also to tobacco products and other goods not belonging to food and luxury goods.

Claims (10)

1. Method for foil-wrapping or film-wrapping confectionery or other food industry products that take the form of articles (1) which are essentially flat in shape, particularly slabs of chocolate, or chocolate bars, this method employing a packaging foil or film, running from a supply reel (4), in the form of a foil or film web (5), to which the said articles (1) are successively fed by means of driving components (3), in a manner such that they are spaced, these driving components (3) being seated on a transport means which is caused to move in the same direction as the said web (5), the edges thereof being placed around the said articles (1), which are following one another in succession, the placing of these edges being such that the web (5) becomes U-shaped, characterized in that the transport of the web (5), which may consist of either a foil or a film, is brought about as a result of its being connected directly to the driving components (3), this connection being temporary.
2. Method according to Claim 1, characterized in that the web (5), which may consist of either a foil or a film, is temporarily clamped to the driving components (3) that are propelling the portions which are to be wrapped, this clamping action being designed to cause the said web (5) to be transported.
3. Method according to Claims 1 and 2, characterized in that an aluminium packaging foil (5) is employed, which is pulled from the supply (4) in synchronism with the feeding of the articles (1), its edges being bent around the row of articles in a manner such that they lie flat against them, in the shape of a « U •.
4. Method according to any of Claims 1 to 3, characterized in that the web (5) of packaging foil or film is continuously shaped, lengthwise, into a tube of wrapping material which receives the articles, this tube exhibiting a U-shaped cross-section, being open along one side, and being grasped and pulled along by transport belts (6, 7) which are circulating at the same speed, in that at least one of the two sides of this tube, which may consist of either a foil or a film, is clamped between the driving components (3) and pressure elements (8, 9), the former following one another in succession and the latter acting on the transport belts (6, 7) and travelling with them, and is carried along with these driving components (3) and pressure elements (8, 9), the said tube, being U-shaped, enclosing the articles (1) and the driving components (3) lying between them.
5. Appliance for foil-wrapping or film-wrapping confectionery or other food industry products that take the form of articles which are essentially flat in shape, particularly slabs of chocolate, or chocolate bars, this appliance employing a packaging foil or film, running from a supply reel (4), in the form of a foil or film web (5), and possessing a transport means (6, 7) that is occupied by driving components (3) for the articles (1) which are to be wrapped, this transport means (6, 7) being caused to move in the same direction as the said web (5), and further possessing devices for placing the edges of the foil or film around the said articles, which, spaced one from another, are following one another in succession, characterized in that a tube-forming arrangement is inserted downline both of the point where the articles (1) which are to be wrapped are fed in, and of the point where the foil or film web (5) runs in, this arrangement shaping the tube, which may consist of either a foil or a film, starting from the foil or film web (5) which is running in from the supply reel (4), the resulting tube exhibiting a U-shaped cross-section, being open along one side, and extending around the articles (1), while the transport means, running in close beside the said tube, is provided with driving components (3) which extend, from the side, into the opening in the tube, and in that a pressure-applying assembly (8-11) is provided on at least one side of the said tube, this pressure-applying assembly (8-11) running in the same direction as the driving components (3) and at the same speed, and pressing one side of the tube profile against them.
6. Appliance according to Claim 5, characterized in that the tube-forming arrangement cooperates with a pair of transport belts (6, 7) which grasp the tube (5) on both sides, this tube consisting of either a foil or a film and exhibiting a U-shaped cross-section, while a pressure-applying assembly (8-11) is provided on each of the two sides of the said tube (5), both these pressure-applying assemblies (8-11) running in the same direction as the said tube (5), being subject to forces exerted by springs (11), and in each case pressing that side of the transport belt (6, 7) which' lies close to the said tube (5) into pressure- contact with the driving components (3), which extend inwards between the sides of the said tube (5), which exhibits a U-shaped cross-section, these driving components (3) likewise travelling with the tube (5).
7. Appliance according to Claims 5 and 6, characterized in that the tube (5), which may consist of either a foil or a film, is transported while lying flat, in the shape of a « U •, the pair of transport belts comprising a carrying belt (6) for supporting the tube (5), and a backing belt (7) which runs into contact with the upper side of the said tube.
8. Appliance according to any of Claims 5 to 7, characterized in that the means for transporting the driving components (3) is driven in a manner such that they are compelled to move, the pair of transport belts (6, 7) likewise being positively driven if the circumstances so require.
9. Appliance according to any of Claims 5 to 8, characterized in that the driving components for propelling the articles (1) are arranged on a transport belt, or on a chain or similar contrivance running lengthwise along the tube of wrapping material, and are capable of being moved, from the side, into the said tube, which is open, their movements being controlled by means of a control device, in order to synchronize them with the operating cycle of the said appliance.
10. Appliance according to any of Claims 5 to 9, characterized in that tools (12-14), a cross- sealing station (15, 16), and a cut-off unit (17-20) are provided downline of the tube-forming arrangement, these tools (12-14) serving both to seal the laterally projecting edges of the foil or film, or, rather, to weld them together, and to fold them over, while the cut-off unit (17-20) serves to separate the individual, packaged portions from the tube (5).
EP83902431A 1982-08-13 1983-08-03 Method and device for wrapping articles of substantially flat shape in the food industry, particularly chocolate slabs or sticks, with a wrapping sheet Expired EP0116062B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83902431T ATE23504T1 (en) 1982-08-13 1983-08-03 METHOD AND DEVICE FOR WRAPPING ESSENTIALLY FLAT PIECE OF GOODS IN THE CONSUMPTION OR FOOD INDUSTRY, IN PARTICULAR CHOCOLATE BARS OR BARS WITH A PACKAGING FILM.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3230083 1982-08-13
DE19823230083 DE3230083A1 (en) 1982-08-13 1982-08-13 METHOD AND DEVICE FOR COVERING, IN THE WEST, FLAT, PLEASANT OR FOOD PARTS, IN PARTICULAR. CHOCOLATE BARS OR BAR WITH A PACKAGING FILM

Publications (2)

Publication Number Publication Date
EP0116062A1 EP0116062A1 (en) 1984-08-22
EP0116062B1 true EP0116062B1 (en) 1986-11-12

Family

ID=6170739

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83902431A Expired EP0116062B1 (en) 1982-08-13 1983-08-03 Method and device for wrapping articles of substantially flat shape in the food industry, particularly chocolate slabs or sticks, with a wrapping sheet

Country Status (6)

Country Link
US (1) US4670279A (en)
EP (1) EP0116062B1 (en)
JP (1) JPS59501404A (en)
DE (2) DE3230083A1 (en)
DK (1) DK82884A (en)
WO (1) WO1984000735A1 (en)

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DE3400172A1 (en) * 1984-01-04 1985-07-18 Otto Hänsel GmbH, 3000 Hannover DEVICE FOR CONTINUOUSLY INPUTING (INSTOCKING) OF SUBSTANTIALLY FLAT PIECES OF GOODS OR FOOD INDUSTRIES, IN PARTICULAR CHOCOLATE TABLES OR BARS, INTO A PACKING MACHINE
CA2064258C (en) * 1991-03-29 2000-11-28 Shozo Omori Shrink-wrapping method and apparatus
US6481188B1 (en) 2000-06-30 2002-11-19 Owens Corning Fiberglas Technology, Inc. Apparatus and method for sealing an article
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US8123515B2 (en) * 2008-10-02 2012-02-28 Robert Frank Schleelein System and method for producing composite materials with variable shapes
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DE102012004341A1 (en) † 2012-03-07 2013-09-12 Gea Cfs Germany Gmbh packaging line

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Also Published As

Publication number Publication date
DE3230083A1 (en) 1984-02-16
DK82884D0 (en) 1984-02-21
DK82884A (en) 1984-04-12
US4670279A (en) 1987-06-02
DE3367575D1 (en) 1987-01-02
JPS59501404A (en) 1984-08-09
WO1984000735A1 (en) 1984-03-01
EP0116062A1 (en) 1984-08-22

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