EP0116124A1 - Method and device for shrinking a shrinkable hood drawn over a stack of goods - Google Patents

Method and device for shrinking a shrinkable hood drawn over a stack of goods Download PDF

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Publication number
EP0116124A1
EP0116124A1 EP83110893A EP83110893A EP0116124A1 EP 0116124 A1 EP0116124 A1 EP 0116124A1 EP 83110893 A EP83110893 A EP 83110893A EP 83110893 A EP83110893 A EP 83110893A EP 0116124 A1 EP0116124 A1 EP 0116124A1
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EP
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Prior art keywords
stack
goods
pallet
shrink hood
envelope
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EP83110893A
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German (de)
French (fr)
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EP0116124B1 (en
EP0116124B2 (en
Inventor
Reiner W. Hannen
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MSK Verpackungs Systeme GmbH
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MSK Verpackungs Systeme GmbH
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Application filed by MSK Verpackungs Systeme GmbH filed Critical MSK Verpackungs Systeme GmbH
Priority to AT83110893T priority Critical patent/ATE20015T1/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
    • B65B53/00—Shrinking wrappers, containers, or container covers during or after packaging
    • B65B53/02—Shrinking wrappers, containers, or container covers during or after packaging by heat
    • B65B53/06—Shrinking wrappers, containers, or container covers during or after packaging by heat supplied by gases, e.g. hot-air jets
    • B65B53/066—Mobile frames, hoods, posts or the like

Definitions

  • the invention relates to a method for shrink-fitting a shrink hood, which is pulled over a stack of goods, in particular palletized, and is fixed with its free opening edge at the lower end of the stack of goods or on the pallet and then subjected to heat energy from the outside.
  • the invention also relates to an apparatus for performing the method.
  • packaged goods or piece goods are stacked on a pallet.
  • the stack of goods is covered with a shrink hood, which is then shrunk by the supply of thermal energy and firmly attaches to the stack of goods, protecting and holding it. So that the shrink hood does not move during the shrinking process and also creates a connection to the pallet, the shrink hood is held in place in the lower region of the stack of goods or on the pallet during the shrinking process.
  • the inner layer of the shrink hood made of separating layer film has a higher melting point, which is why the shrink properties in this film are worse than that of a shrink hood made of simple film.
  • the inner film slows down the shrinking of the shrink hood, which is usually made of PE.
  • the invention is therefore based on the object of specifying a method and a device of the type described at the outset with which shrink hoods, which consist in particular of PE, can also be shrunk over a stack of goods, the small containers of which in turn are packaged in PE.
  • This object is achieved in the method of the type described in the introduction by placing the space enclosed by the shrink hood under excess pressure until the shrink hood inflates, the excess pressure being less than the expected shrinkage stresses, and then maintaining the shrink hood of the excess pressure is applied from the outside with thermal energy.
  • the walls of the shrink hood are kept at a distance from the walls of the stack of goods during shrinking, so that welding of the material of the shrink hood to the packaging material of the small containers which form the stack of goods is largely ruled out. Since the overpressure inside the shrink hood is usually caused by the supply of fresh air, the outer walls of the stack of goods are additionally cooled, so that they cannot even reach the temperature of the shrink hood.
  • the free opening edge of the shrink hood should be defined under the pallet and an air jet should be blown against the underside of the pallet. Since the pallets have support feet that are spaced apart, the air blown against the underside of the pallet can escape between the support feet and under the shrink hood arrive, the free opening edge between the underside of the support feet and a transport plane, which is formed for example by the tracks of a chain conveyor, is clamped.
  • the heat energy for shrinking the shrink hood is expediently supplied with a hot gas jet which emerges from a hot gas mast which can be guided around the palletized stack of goods.
  • a hot gas mast which can be guided around the palletized stack of goods.
  • Various burners are distributed over the height of such a hot gas mast, which can optionally also be controlled independently of one another.
  • there is also the possibility of reducing the supply of thermal energy in the area of the edges of the stack of goods because in the area of the edges of the stack of goods the shrink hood lies against the stack of goods or the shrink hood attaches itself early on during the shrinking. By reducing the supply of thermal energy in these areas, welding of the shrink hood material to the packaging material of the small container can also be prevented there.
  • a device for carrying out the method generally has a chain conveyor, a hot gas mast arranged in the area of the chain conveyor and a blower arranged in the area of the chain conveyor below the transport plane.
  • the fan is arranged in front of the hot gas mast in the transport direction and is designed as a suction fan. It serves among other things to create an air flow that pulls the free opening edge of the shrink hood that has not yet shrunk under the pallet.
  • the blower is switched on and inflates the shrink hood during the shrinking process.
  • the single figure shows a schematic representation and partially a side view of a shrinking device for palletized stacks of goods which are covered with a shrink hood.
  • a stack of goods 3 is transported on a pallet 4 in the direction of arrow 5 on a chain conveyor 1, the tracks of which, not shown in detail, form a transport plane 2.
  • the chains of the chain conveyor 1 arranged in lanes are guided over deflection devices (not shown) and returned in the direction of arrow 6 in a plane below the transport plane 2.
  • a shrink hood 7 is pulled over the stack of goods 2, the free opening edge 8 of the shrink hood 8 being clamped between the support feet 9 of the pallet 4 and the tracks of the chain conveyor 1.
  • the pallet 4 with the stack of goods 3 and the shrink hood 7 is brought by the chain conveyor 1 into the area of a shrinking device 10 which has a carrier 11 for an arm 12 pivotable thereon about a vertical axis.
  • a hot gas mast 13 is suspended, which extends into the area of the pallet 4.
  • the hot gas mast 10 has a number of burners, not shown, the emerging hot gas jets 14 of which are directed onto the shrink hood 7.
  • the hot gas mast 13 can be moved around the stack of goods 3 by the arm 12.
  • the pressure blower 15 When the pallet 4 with the stack of goods 3 is above the pressure blower 15, the pressure blower 15 is put into operation.
  • the fan jet 16 places the space enclosed by the shrink hood 7 under excess pressure and inflates the shrink hood 7 in the manner shown.
  • the burners of the hot gas mast 13 are ignited and the hot gas mast 13 is guided around the stack 3 of goods. Because of the distance of the shrink hood 7 from the piece goods 3, which in turn can be packaged again, the heating of the packaging of these piece goods remains low and welding of the shrink hood material to the packaging material is prevented. The cooling effect of the air conveyed by the pressure blower 15 also contributes to this.
  • the burners of the hot gas mast 13 can work with reduced output in order to prevent the shrink-hood material from being welded to the packaging material of the piece goods in these areas.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Packages (AREA)

Abstract

In order to package a stack of goods in an envelope of heat-shrinkable plastic material such as polyethylene, with prevention of adhesion between the envelope and the goods which may themselves be wrapped in similar sheet material, the stack is placed on a pallet and is covered by the envelope whose lower rim is clamped between the legs of the pallet and an apertured supporting surface such as an upper run of a chain conveyor. The envelope is then inflated from below, by way of the supporting surface, with a low-temperature gas such as ambient air, to establish significant clearances between the stack and the inner surface of the envelope which is then thermally shrunk around the stack by training jets of hot gas onto its outer surface. In zones where the envelope is in contact with the stack, as along edges of the latter, the heating intensity may be reduced to avoid fusion with individual wrappings.

Description

Die Erfindung betrifft ein Verfahren zum Einschrumpfen einer Schrumpfhaube, die über einen insbesondere palettierten Gutstapel gezogen und mit ihrem freien Öffnungsrand am unteren Ende des Gutstapels oder an der Palette festgelegt wird sowie dann von außen mit Wärmeenergie beaufschlagt wird. Die Erfindung betrifft auch eine Vorrichtung zur Durchführung des Verfahrens.The invention relates to a method for shrink-fitting a shrink hood, which is pulled over a stack of goods, in particular palletized, and is fixed with its free opening edge at the lower end of the stack of goods or on the pallet and then subjected to heat energy from the outside. The invention also relates to an apparatus for performing the method.

Für Lagerhaus- und Transportzwecke werden in Kleingebinden verpackte Güter oder auch Stückgüter auf einer Palette gestapelt. Der Gutstapel wird mit einer Schrumpfhaube überzogen, die dann durch Zufuhr von Wärmeenergie geschrumpft wird und sich fest an den Gutstapel anlegt, diesen schützt und hält. Damit die Schrumpfhaube während des Schrumpfvorganges sich nicht verschiebt und auch eine Verbindung zur Palette herstellt, wird die Schrumpfhaube während des Einschrumpfens im unteren Bereich des Gutstapels oder an der Palette festgehalten.For warehouse and transport purposes, packaged goods or piece goods are stacked on a pallet. The stack of goods is covered with a shrink hood, which is then shrunk by the supply of thermal energy and firmly attaches to the stack of goods, protecting and holding it. So that the shrink hood does not move during the shrinking process and also creates a connection to the pallet, the shrink hood is held in place in the lower region of the stack of goods or on the pallet during the shrinking process.

Vielfach sind Kleingebinde, wie Flaschen, Kartons oder andere kleine Stückgüter ihrerseits in Kunststofffolien verpackt. Wenn ein aus derartigen Teilen gebildeter Gutstapel mit einer Schrumpffolie überzogen wird und diese Schrumpffolie eingeschrumpft wird, dann besteht die Gefahr, daß die Schrumpffolie mit dem Verpackungsmaterial verschweißt. Das führt zu Problemen beim Entladen der Palette.Small packages such as bottles and boxes are often used or other small piece goods in turn packed in plastic films. If a stack of goods formed from such parts is covered with a shrink film and this shrink film is shrunk, there is a risk that the shrink film will weld to the packaging material. This leads to problems when unloading the pallet.

Zur Vermeidung dieser Probleme ist es bekannt, die Kleingebinde in PVC-Folie zu verpacken, welches mit dem Material der Schrumpfhaube nicht verschweißt. PVC-Folien sind aber teuer, und die Abfallbeseitigung von PVC ist problematisch.To avoid these problems, it is known to pack the small container in PVC film, which does not weld to the material of the shrink hood. PVC films are expensive, however, and PVC waste disposal is problematic.

Daneben ist es auch bekannt, die Kleingebinde mit Folienmaterial zu verpacken, das eine größere Dicke besitzt als das Material der Schrumpfhaube. Auch das vergrößert die Kosten.In addition, it is also known to pack the small container with film material that has a greater thickness than the material of the shrink hood. This also increases the costs.

Wenn man unter der Schrumpfhaube eine Haube aus Trennfolie anordnet, müssen für das Verpacken des palettierten Gutstapels zusätzliche Zeit und zusätzliche Kosten auf gewendet werden.If a hood made of separating film is placed under the shrink hood, additional time and costs have to be used to pack the palletized stack of goods.

Bei Einsatz von Schrumpfhauben aus sogenannten Trennschichtfolien, - das sind zwei- oder mehrschichtige koextrudierte Folien -, wird zwar Zeit eingespart, es müssen aber die zusätzlichen Kosten für die Trennschichtfolie aufgebracht werden. Außerdem hat die Innenlage.der Schrumpfhaube aus Trennschichtfolie einen höheren Schmelzpunkt, weshalb die Schrumpfeigenschaften in dieser Folie schlechter sind als die einer Schrumpfhaube aus einfacher Folie. Die Innenfolie bremst nämlich das Einschrumpfen der üblicherweise aus PE bestehenden Schrumpfhaube.When using shrink hoods made of so-called separating layer films - that is, two- or multi-layer coextruded films - time is saved, but the additional costs for the separating layer film must be applied. In addition, the inner layer of the shrink hood made of separating layer film has a higher melting point, which is why the shrink properties in this film are worse than that of a shrink hood made of simple film. The inner film slows down the shrinking of the shrink hood, which is usually made of PE.

Der Erfindung liegt deswegen die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung der eingangs beschriebenen Gattung anzugeben, mit dem Schrumpfhauben, die insbesondere aus PE bestehen, auch über einen Gutstapel eingeschrumpft werden können, dessen Kleingebinde ihrerseits in PE verpackt sind.The invention is therefore based on the object of specifying a method and a device of the type described at the outset with which shrink hoods, which consist in particular of PE, can also be shrunk over a stack of goods, the small containers of which in turn are packaged in PE.

Diese Aufgabe wird bei dem Verfahren der eingang beschriebenen Gattung dadurch gelöst, daß der von.der Schrumpfhaube umschlossene Raum unter Überdruck gesetzt wird, bis die Schrumpfhaube sich aufbläht, wobei der Überdruck geringer ist als die zu erwartenden Schrumpfspannungen, und daß die Schrumpfhaube dann unter Aufrechterhaltung des Überdrucks von außen mit Wärmeenergie beaufschlagt wird.This object is achieved in the method of the type described in the introduction by placing the space enclosed by the shrink hood under excess pressure until the shrink hood inflates, the excess pressure being less than the expected shrinkage stresses, and then maintaining the shrink hood of the excess pressure is applied from the outside with thermal energy.

Bei dem erfindungsgemäßen Verfahren werden die Wandungen der Schrumpfhaube während des Einschrumpfens im Abstand von den Wandungen des Gutstapels gehalten, so daß ein Verschweißen des Materials der Schrumpfhaube mit dem Verpackungsmaterial der Kleingebinde, die den Gutstapel bilden, weitgehend ausgeschlossen ist. Da der Überdruck innerhalb der Schrumpfhaube in der Regel durch Zufuhr von Frischluft erfolgt, werden die Außenwandungen des Gutstapels zusätzlich auch gekühlt, so daß sie gar nicht die Temperatur der Schrumpfhaube annehmen können.In the method according to the invention, the walls of the shrink hood are kept at a distance from the walls of the stack of goods during shrinking, so that welding of the material of the shrink hood to the packaging material of the small containers which form the stack of goods is largely ruled out. Since the overpressure inside the shrink hood is usually caused by the supply of fresh air, the outer walls of the stack of goods are additionally cooled, so that they cannot even reach the temperature of the shrink hood.

Insbesondere soll der freie Öffnungsrand der Schrumpfhaube unter der Palette festgelegt werden und soll gegen die Unterseite der Palette ein Luftstrahl geblasen werden. Da die Paletten Stützfüße besitzen, die im Abstand voneinander angeordnet sind, kann die gegen die Unterseite der Palette geblasene Luft zwischen den Stützfüßen austreten und unter die Schrumpfhaube gelangen, deren freier Öffnungsrand zwischen der Unterseite der Stützfüße und einer Transportebene, die beispielsweise von den Bahnen eines Kettenförderers gebildet wird, eingeklemmt ist.In particular, the free opening edge of the shrink hood should be defined under the pallet and an air jet should be blown against the underside of the pallet. Since the pallets have support feet that are spaced apart, the air blown against the underside of the pallet can escape between the support feet and under the shrink hood arrive, the free opening edge between the underside of the support feet and a transport plane, which is formed for example by the tracks of a chain conveyor, is clamped.

Die Wärmeenergie zum Einschrumpfen der Schrumpfhaube wird zweckmäßig mit einem Heißgasstrahl zugeführt, der aus einem um den palettierten Gutstapel herumführbaren Heißgasmast austritt. Über die Höhe eines solchen Heißgasmastes verteilt sind verschiedene Brenner, die gegebenenfalls auch unabhängig voneinander gesteuert werden können. Insoweit besteht auch die Möglichkeit, die Zufuhr von Wärmeenergie im Bereich der Kanten des Gutstapels zu reduzieren, denn im Bereich der Kanten des Gutstapels liegt die Schrumpfhaube am Gutstapel an oder legt sich die Schrumpfhaube während des Einschrumpfens frühzeitig an. Durch Reduzierung der Zufuhr von Wärmeenergie in diesen Bereichen kann auch dort das Verschweißen des Schrumpfhaubenmaterials mit dem Verpackungsmaterial der Kleingebinde verhindert werden.The heat energy for shrinking the shrink hood is expediently supplied with a hot gas jet which emerges from a hot gas mast which can be guided around the palletized stack of goods. Various burners are distributed over the height of such a hot gas mast, which can optionally also be controlled independently of one another. In this regard, there is also the possibility of reducing the supply of thermal energy in the area of the edges of the stack of goods, because in the area of the edges of the stack of goods the shrink hood lies against the stack of goods or the shrink hood attaches itself early on during the shrinking. By reducing the supply of thermal energy in these areas, welding of the shrink hood material to the packaging material of the small container can also be prevented there.

Eine Vorrichtung zur Durchführung des Verfahrens weist in der Regel einen Kettenförderer auf, einen im Bereich des Kettenförderers angeordneten Heißgasmast und ein im Bereich des Kettenförderers unterhalb der Transportebene angeordnetes Gebläse. Bei herkömmlichen Vorrichtungen ist das Gebläse in Transportrichtung vor dem Heißgasmast angeordnet und als Sauggebläse ausgebildet. Es dient u.a. dazu, eine Luftströmung zu erzeugen, die den freien Öffnungsrand der noch nicht geschrumpften Schrumpfhaube unter die Palette zieht.A device for carrying out the method generally has a chain conveyor, a hot gas mast arranged in the area of the chain conveyor and a blower arranged in the area of the chain conveyor below the transport plane. In conventional devices, the fan is arranged in front of the hot gas mast in the transport direction and is designed as a suction fan. It serves among other things to create an air flow that pulls the free opening edge of the shrink hood that has not yet shrunk under the pallet.

Erfindungsgemäß und zur Lösung der Aufgabe soll das Gebläse oder soll ein weiteres Gebläse im Bereich des Heißgasmastes angeordnet und als Druckgebläse mit auf die Transportebene gerichtetem Gebläsestrahl ausgebildet sein. Wenn der palettierte Gutstapel mit der darübergezogenen Schrumpfhaube in den Bereich des Heißgasmastes gelangt, wird das Gebläse eingeschaltet und bläht die Schrumpfhaube während des Einschrumpfens auf.According to the invention and to solve the problem, the blower or should be another blower in the area the hot gas mast and be designed as a pressure blower with a blower jet directed at the transport plane. When the stacked goods stack with the shrink hood pulled into the area of the hot gas mast, the blower is switched on and inflates the shrink hood during the shrinking process.

Im folgenden wird ein in der Zeichnung dargestelltes Ausführungsbeispiel der Erfindung erläutert; die einzige Figur zeigt in schematischer Darstellung und teilweise eine Seitenansicht einer Schrumpfvorrichtung für palettierte Gutstapel, die mit einer Schrumpfhaube überzogen sind.In the following an embodiment of the invention shown in the drawing is explained; the single figure shows a schematic representation and partially a side view of a shrinking device for palletized stacks of goods which are covered with a shrink hood.

Auf einem Kettenförderer 1, dessen im einzelnen nicht dargestellte Bahnen eine Transportebene 2 bilden, wird ein Gutstapel 3 auf einer Palette 4 in Richtung des Pfeils 5 transportiert. Die bahnenweise angeordneten Ketten des Kettenförderers 1 werden über nicht dargestellte Umlenkeinrichtungen geführt und in einer unterhalb der Transportebene 2 liegenden Ebene in Richtung des Pfeils 6 zurückgeführt.A stack of goods 3 is transported on a pallet 4 in the direction of arrow 5 on a chain conveyor 1, the tracks of which, not shown in detail, form a transport plane 2. The chains of the chain conveyor 1 arranged in lanes are guided over deflection devices (not shown) and returned in the direction of arrow 6 in a plane below the transport plane 2.

Über den Gutstapel 2 ist im Bereich einer anderen Station eine Schrumpfhaube 7 gezogen, deren freier Öffnungsrand 8 zwischen den Stützfüßen 9 der Palette 4 und den Bahnen des Kettenförderers 1 eingeklemmt wurde.In the area of another station, a shrink hood 7 is pulled over the stack of goods 2, the free opening edge 8 of the shrink hood 8 being clamped between the support feet 9 of the pallet 4 and the tracks of the chain conveyor 1.

Die Palette 4 mit dem Gutstapel 3 und der Schrumpfhaube 7 wird vom Kettenförderer 1 bis in den Bereich einer Schrumpfeinrichtung 10 gebracht, welche einen Träger 11 für einen daran um eine vertikale Achse schwenkbaren Arm 12 aufweist. Am freien Ende des Arms 12 ist ein Heißgasmast 13 aufgehängt, der sich bis in den Bereich der Palette 4 erstreckt. Der Heißgasmast 10 weist eine Reihe von nicht dargestellten Brennern auf, deren austretende Heißgasstrahlen 14 auf die Schrumpfhaube 7 gerichtet sind. Der Heißgasmast 13 kann vom Arm 12 um den Gutstapel 3 herumgefahren werden.The pallet 4 with the stack of goods 3 and the shrink hood 7 is brought by the chain conveyor 1 into the area of a shrinking device 10 which has a carrier 11 for an arm 12 pivotable thereon about a vertical axis. At the free end of the arm 12 is a hot gas mast 13 is suspended, which extends into the area of the pallet 4. The hot gas mast 10 has a number of burners, not shown, the emerging hot gas jets 14 of which are directed onto the shrink hood 7. The hot gas mast 13 can be moved around the stack of goods 3 by the arm 12.

Unterhalb der Transportebene 2 des Kettenförderers 1 befindet sich ein Druckgebläse 15, dessen Gebläsestrahl 16 auf die Transportebene 2 und damit gegen die Unterseite der Palette 4 gerichtet ist.Below the transport plane 2 of the chain conveyor 1 there is a pressure blower 15, the blower jet 16 of which is directed onto the transport plane 2 and thus against the underside of the pallet 4.

Wenn sich die Palette 4 mit dem Gutstapel 3 über dem Druckgebläse 15 befindet, wird das Druckgebläse 15 in Betrieb genommen. Der Gebläsestrahl 16 setzt den von der Schrumpfhaube 7 umschlossenen Raum unter Überdruck und bläht die Schrumpfhaube 7 in der dargestellten Weise auf.When the pallet 4 with the stack of goods 3 is above the pressure blower 15, the pressure blower 15 is put into operation. The fan jet 16 places the space enclosed by the shrink hood 7 under excess pressure and inflates the shrink hood 7 in the manner shown.

Zum Einschrumpfen der Schrumpfhaube 7 werden die Brenner des Heißgasmastes 13 gezündet, und wird der Heißgasmast 13 um den Gutstapel 3 herumgeführt. Wegen des Abstandes der Schrumpfhaube 7 von den zum Gutstapel 3 zusammengestellten Stückgütern, die ihrerseits wieder verpackt sein können, bleibt die Erwärmung der Verpackung dieser Stückgüter gering und eine Verschweißung des Schrumpfhaubenmaterials mit dem Verpackungsmaterial wird verhindet. Dazu trägt auch die Kühlwirkung der vom Druckgebläse 15 geförderten Luft bei.To shrink the shrink hood 7, the burners of the hot gas mast 13 are ignited and the hot gas mast 13 is guided around the stack 3 of goods. Because of the distance of the shrink hood 7 from the piece goods 3, which in turn can be packaged again, the heating of the packaging of these piece goods remains low and welding of the shrink hood material to the packaging material is prevented. The cooling effect of the air conveyed by the pressure blower 15 also contributes to this.

Im Bereich der Kanten des Gutstapels 3 können die Brenner des Heißgasmastes 13 mit verringerter Leistung arbeiten, um ein Verschweißen des Schrumpfhaubenmaterials mit dem Verpackungsmaterial der Stückgüter in diesen Bereichen zu verhindern.In the area of the edges of the stack of goods 3, the burners of the hot gas mast 13 can work with reduced output in order to prevent the shrink-hood material from being welded to the packaging material of the piece goods in these areas.

Claims (6)

1. Verfahren zum Einschrumpfen der Schrumpfhaube, die über einen insbesondere palettierten Gutstapel gezogen wird und mit ihrem freien Öffnungsrand am unteren Ende des Gutstapels oder an der Palette festgelegt wird sowie dann von außen mit Wärmeenergie beaufschlagt wird, dadurch gekennzeichnet, daß der von der Schrumpfhaube (7) umschlossene Raum unter Überdruck gesetzt wird, bis die Schrumpfhaube (7) sich aufbläht, wobei der Überdruck geringer ist als die zu erwartenden Schrumpfspannungen, und daß die Schrumpfhaube (7) dann unter Aufrechterhaltung des Überdrucks von außen mit Wärmeenergie beaufschlagt wird.1. A method for shrinking the shrink hood, which is pulled over a palletized good stack in particular and is fixed with its free opening edge at the lower end of the good stack or on the pallet and then subjected to heat energy from the outside, characterized in that the heat shrink hood ( 7) enclosed space is placed under positive pressure until the shrink hood (7) inflates, the positive pressure being less than the expected shrinkage stresses, and that the shrink hood (7) is then subjected to external heat energy while maintaining the positive pressure. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der freie Öffnungsrand (8) der Schrumpfhaube (7) oder der Palette (4) festgelegt wird und daß gegen die Unterseite der Palette (4) ein Luftstrahl (16) geblasen wird.2. The method according to claim 1, characterized in that the free opening edge (8) of the shrink hood (7) or the pallet (4) is fixed and that an air jet (16) is blown against the underside of the pallet (4). 3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß der freie Öffnungsrand (8) der Schrumpfhaube (7) zwischen der Unterseite der Palette (4) und den Bahnen (2) eines Kettenförderers (1) eingeklemmt wird.3. The method according to claim 2, characterized in that the free opening edge (8) of the shrink hood (7) between the underside of the pallet (4) and the tracks (2) of a chain conveyor (1) is clamped. 4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Wärmeenergie mit einem Heißgasstrahl (14) zugeführt wird.4. The method according to any one of claims 1 to 3, characterized in that the thermal energy is supplied with a hot gas jet (14). 5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Zufuhr von Wärmeenergie im Bereich der Kanten des Gutstapels (3) reduziert wird.5. The method according to any one of claims 1 to 4, characterized in that the supply of thermal energy in the region of the edges of the stack of goods (3) is reduced. 6. Vorrichtung zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 5 mit einem Kettenförderer, einen im Bereich des Kettenförderers angeordneten Heißgasmast und einen im Bereich des Kettenförderers unterhalb der Transportebene angeordneten Gebläse, dadurch gekennzeichnet, daß das Gebläse im Bereich des Heißgasmastes (10, 13) angeordnet und als Druckgebläse (15) mit auf die Transportebene (2) gerichtetem Gebläsestrahl (16) ausgebildet ist.6. Apparatus for carrying out the method according to one of claims 1 to 5 with a chain conveyor, a hot gas mast arranged in the area of the chain conveyor and a blower arranged in the area of the chain conveyor below the transport plane, characterized in that the blower in the area of the hot gas mast (10, 13) and is designed as a pressure blower (15) with a blower jet (16) directed towards the transport plane (2).
EP83110893A 1982-12-30 1983-11-02 Method and device for shrinking a shrinkable hood drawn over a stack of goods Expired - Lifetime EP0116124B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83110893T ATE20015T1 (en) 1982-12-30 1983-11-02 METHOD AND DEVICE FOR SHRINKING A SHRINK HOOD DRAFTED OVER A PARTICULARLY PALLETIZED STACK OF GOODS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8236854 1982-12-30
DE8236854U 1982-12-30

Publications (3)

Publication Number Publication Date
EP0116124A1 true EP0116124A1 (en) 1984-08-22
EP0116124B1 EP0116124B1 (en) 1986-05-28
EP0116124B2 EP0116124B2 (en) 1992-11-04

Family

ID=6747009

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83110893A Expired - Lifetime EP0116124B2 (en) 1982-12-30 1983-11-02 Method and device for shrinking a shrinkable hood drawn over a stack of goods

Country Status (5)

Country Link
US (1) US4562689A (en)
EP (1) EP0116124B2 (en)
JP (1) JPS59134134A (en)
AT (1) ATE20015T1 (en)
DE (1) DE3363806D1 (en)

Cited By (8)

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Publication number Priority date Publication date Assignee Title
EP0205135A1 (en) * 1985-06-14 1986-12-17 MSK-Verpackungs-Systeme Gesellschaft mit beschränkter Haftung Method for packaging stacked articles disposed on a pallet, and device for putting the method into operation
EP0283541A1 (en) * 1987-03-26 1988-09-28 VFI Gesellschaft für Verpackungstechnik mbH Method and apparatus for shrinking a plastic hood around a palletized load
DE3932782A1 (en) * 1988-12-16 1990-06-21 Brega Verpackungsmaschinen Anw Shrink wrapping palletised goods with plastic film - using appts. comprising vertically mobile heating head on pillar fixed to cantilevered arm
US5203350A (en) * 1990-07-05 1993-04-20 Rotecno Ag Medical surgical cover sheet
EP0649791A1 (en) * 1993-10-26 1995-04-26 Maschinenfabrik Möllers GmbH u. Co. Method and device for shrinking a shrinkable film hood
FR2792610A1 (en) 1999-04-26 2000-10-27 Thimon PROCESS FOR SHRINKING A FLEXIBLE SHEATH IN THERMALLY SHRINKABLE PLASTIC MATERIAL ON A PALLETIZED LOAD, AND MACHINE FOR CARRYING OUT THIS PROCESS
CZ302643B6 (en) * 2010-06-11 2011-08-10 Jihoceská univerzita v Ceských Budejovicích, Ekonomická fakulta Device for multiple fixations of goods onto a pallet and method of multiple fixations of goods onto pallet
EP2918502B1 (en) * 2014-03-14 2019-01-16 MSK - Verpackungs-Systeme GmbH Device for packaging a stack of goods

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FR2573031B1 (en) * 1984-11-15 1987-07-03 Raffault Gerard MACHINE FOR PACKAGING VARIOUS PRODUCTS, UNDER HEAT SHRINK FILM
DE3717495C1 (en) * 1987-05-23 1988-06-30 Becker Josef Process for the treatment of threadlike textile material
DE4336387C1 (en) * 1993-10-26 1994-10-20 Moellers Maschf Gmbh Process and apparatus for the shrinkage of a shrink-foil cover
WO1995013218A1 (en) * 1993-11-12 1995-05-18 Shinwa Corporation Method of and device for packing article by means of athmospheric pressure
DE4342490C2 (en) * 1993-12-13 1996-09-26 Lachenmeier Kurt Aps Method and device for shrinking a film hood made of heat-shrinkable material, which is pulled over a load on a pallet
DE4426369C1 (en) * 1994-07-26 1995-08-17 Moellers Maschf Gmbh Shrink wrapping of film around product stock
PL202615B1 (en) * 1999-01-28 2009-07-31 Msk Verpackung Syst Gmbh Device for shrinking a shrink-wrap film
US6304720B1 (en) * 1999-08-19 2001-10-16 Cpfilms Inc. Heat shrinking heat gun with fan-shaped nozzle with temperature and/or airflow variation along the nozzle
US6962037B2 (en) * 2001-04-03 2005-11-08 Borchard James A Methods for sealing a load placed on a pallet
ITRM20040472A1 (en) * 2004-10-01 2005-01-01 Stelliferi & Itavex S P A PROCEDURE FOR THE PACKAGING OF PRODUCTS, FOR EXAMPLE FOR FOOD PRODUCTS, RELATED PACKAGING AND CONSTRUCTION EQUIPMENT.

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0205135A1 (en) * 1985-06-14 1986-12-17 MSK-Verpackungs-Systeme Gesellschaft mit beschränkter Haftung Method for packaging stacked articles disposed on a pallet, and device for putting the method into operation
EP0283541A1 (en) * 1987-03-26 1988-09-28 VFI Gesellschaft für Verpackungstechnik mbH Method and apparatus for shrinking a plastic hood around a palletized load
DE3932782A1 (en) * 1988-12-16 1990-06-21 Brega Verpackungsmaschinen Anw Shrink wrapping palletised goods with plastic film - using appts. comprising vertically mobile heating head on pillar fixed to cantilevered arm
US5203350A (en) * 1990-07-05 1993-04-20 Rotecno Ag Medical surgical cover sheet
EP0649791A1 (en) * 1993-10-26 1995-04-26 Maschinenfabrik Möllers GmbH u. Co. Method and device for shrinking a shrinkable film hood
US5502947A (en) * 1993-10-26 1996-04-02 Maschinenfabrik Mollers Gmbh U. Co. Method of and apparatus for shrinking a shrink film cover
FR2792610A1 (en) 1999-04-26 2000-10-27 Thimon PROCESS FOR SHRINKING A FLEXIBLE SHEATH IN THERMALLY SHRINKABLE PLASTIC MATERIAL ON A PALLETIZED LOAD, AND MACHINE FOR CARRYING OUT THIS PROCESS
CZ302643B6 (en) * 2010-06-11 2011-08-10 Jihoceská univerzita v Ceských Budejovicích, Ekonomická fakulta Device for multiple fixations of goods onto a pallet and method of multiple fixations of goods onto pallet
EP2918502B1 (en) * 2014-03-14 2019-01-16 MSK - Verpackungs-Systeme GmbH Device for packaging a stack of goods

Also Published As

Publication number Publication date
EP0116124B1 (en) 1986-05-28
DE3363806D1 (en) 1986-07-03
ATE20015T1 (en) 1986-06-15
JPS59134134A (en) 1984-08-01
EP0116124B2 (en) 1992-11-04
US4562689A (en) 1986-01-07

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