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EP0133462B1 - Method of packing pallettised stacks of goods, and device for carrying out the method - Google Patents

Method of packing pallettised stacks of goods, and device for carrying out the method Download PDF

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Publication number
EP0133462B1
EP0133462B1 EP84107065A EP84107065A EP0133462B1 EP 0133462 B1 EP0133462 B1 EP 0133462B1 EP 84107065 A EP84107065 A EP 84107065A EP 84107065 A EP84107065 A EP 84107065A EP 0133462 B1 EP0133462 B1 EP 0133462B1
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EP
European Patent Office
Prior art keywords
goods
stack
foil
heat
pallet
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
Application number
EP84107065A
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German (de)
French (fr)
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EP0133462A3 (en
EP0133462A2 (en
EP0133462B2 (en
Inventor
Reiner Wilhelm Hannen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
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 AT84107065T priority Critical patent/ATE28607T1/en
Publication of EP0133462A2 publication Critical patent/EP0133462A2/en
Publication of EP0133462A3 publication Critical patent/EP0133462A3/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

Definitions

  • the invention relates to a method for packaging palletized stacks of goods with a heat shrink film, in which the stack of goods is first exposed on its underside, in particular raised and wrapped with the heat shrink film in such a way that its lower edge protrudes over the stack of goods, this lower edge in the released state of the stack of goods is initially heated more than the rest of the heat shrink film to the shrink temperature and is thereby placed under the underside of the stack of goods by flow forces of a hot gas stream generated by a blower, and then the rest of the heat shrink film is shrunk.
  • the invention also relates to a device for carrying out the method with a hood covering station, a lifting platform arranged below the hood covering station and a shrinking device arranged above the lifting platform for heating the heat shrink film to shrink temperature.
  • a method of the type described above is known from US-PS 38 07 126.
  • the stack of goods arranged on a pallet is brought with the aid of a conveyor into a shrinking oven in which the heat shrink film is shrunk with hot air.
  • the hot air is conveyed through the shrinking furnace with a blower arranged on the ceiling of the shrinking furnace in such a way that the hot air first acts on the sides of the stack of material and can then flow out again through openings under the pallet.
  • a device in which the hood pulling station and the shrinking station are combined is known from FR-OS 21 89 264.
  • the shrinking device consists of a frame which has infrared radiators on the inside.
  • the frame is so large that it surrounds the stack of goods arranged on the lifting platform.
  • the heat shrink film surrounding the stack of goods can be shrunk by vertical movement of the frame.
  • the object of the invention is to further develop the method mentioned at the outset in such a way that the shrinkage result at the lower edge of the shrink film is significantly improved and can be carried out using a device which is simpler and saves space.
  • This object is achieved in that first only the lower edge of the heat shrink film is heated to shrink temperature with hot gas from a ring burner surrounding the stack of material and is sucked against the underside of the stack of material with the suction flow of a suction fan arranged under the stack of material, and that the remaining heat shrink film is then included the hot gas of the ring burner is shrunk during a relative movement between the ring burner and the stack of goods.
  • a device is suitable for carrying out the method, which includes a hood pulling station, a lifting platform arranged below the hood pulling station and a hot gas shrinking device arranged above the lifting platform for heating the shrink film to shrink temperature, the shrinking device comprising a stack of goods surrounding the stack of goods and vertically along the stack of goods movable ring burner, and wherein a suction fan is arranged in the area of the lifting platform.
  • the lifting platform for lifting the stack of goods has lifting rams which can be moved into openings on the underside of a stack of goods up to the underside of the surface of the stack of goods. The lifting stamps then no longer hinder the shrinking of the lower edge of the shrink film.
  • the device according to the invention is illustrated in more detail using an exemplary embodiment. It shows a shrinking station 1, which consists of a mast bridge 2 and a ring burner 3.
  • the mast bridge 2 has two masts 4 arranged side by side in a plane perpendicular to the plane of the drawing, of which only the front one in this view can be seen here. Both masts 4 are connected to one another at their upper ends via a transverse yoke 5.
  • a corresponding drive is also arranged on the mast, which is not visible here, the two drives 6 being synchronized with one another in such a way that they are always at the same height.
  • the drives 6 are connected to one another by the ring burner 3, which has a rectangular, frame-like shape, the area enclosed by it being large enough so that the ring burner 3 can be moved vertically over a stack of goods.
  • Such a stack of goods 12 is located below the ring burner 3 on a roller conveyor 13.
  • the stack of goods 12 consists of a conventional pallet 14 and the goods 15 stacked thereon.
  • a lifting platform or lifting device 16 which is shown here schematically as a scissor lift.
  • lifting rams 17, 18 project upwards through corresponding gaps in the roller conveyor path 13 between the base strips 19 of the pallet 14.
  • a schematically illustrated suction fan 20 is also arranged.
  • the method according to the invention proceeds with this device as follows.
  • the ring burner 3 is lowered to the level of the roller conveyor path 13 by a corresponding movement of the drives 6. Then the stack of goods 12 is raised by lifting the lifting rams 17, 18 by means of the lifting device 16 by approximately the height of the pallet 14, for example by approximately 15 cm. Then the shrink film is pulled down with a known hood covering device, not shown here, from above over the stack of goods 12 so far that the lower edge of the shrink film projects downwards over the underside of the stack of goods 12 or the pallet 14. The hood pulling machine is then moved back again.
  • the lower edge of the shrink film is subjected to hot gas through the ring burner 3, so that it heats up to its shrinking temperature and contracts under the underside of the pallet 14. This is supported by the suction fan 18.
  • the stack of goods 12 is then lowered again onto the roller conveyor 13 while the edge of the shrink film is still heated, whereby the hot edge between the rollers of the roller conveyor 13 and the underside of the pallet 14 is pressed together with the effect that the individual layers of this edge are welded together. This gives the lower edge of the shrink film an extremely good hold.
  • the vertical movement of the ring burner 3 then begins.
  • the shrink film contracts strongly over the side surfaces.
  • the ring burner 3 is stopped in order to cause shrinkage on the top of the stack of goods 12.
  • the stack of goods 12 can then be moved out of the shrinking station 1 via the roller conveyor track 13. The procedure described above is then repeated for a new stack of goods.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Stacking Of Articles And Auxiliary Devices (AREA)

Abstract

Tight packaging of a load including a stack of goods mounted on a pallet is achieved by lifting the loaded pallet above a conveyor or other supporting surface, pulling a hood of heat-shrinkable plastic foil from above over the load with the rim of the hood projecting below the underside of the pallet, heating that rim to substantially shrinkage temperature for causing it to contract around the pallet periphery, and lowering the load onto the supporting surface to press the hot, contracted hood rim against the bottom of the pallet. The contraction is aided by a blower below the pallet aspirating air toward the center thereof. The remainder of the hood is then thermally shrunk around the load.

Description

Die Erfindung betrifft ein Verfahren zum Verpacken von palettierten Gutstapeln mit einer Heißschrumpffolie, bei dem der Gutstapel an seiner Unterseite zunächst freigestellt, insbesondere angehoben und mit der Heißschrumpffolie derart umhüllt wird, daß deren unterer Rand über den Gutstapel vorsteht, wobei dieser untere Rand in freigestelltem Zustand des Gutstapels zunächst stärker als die übrige Heißschrumpffolie bis auf Schrumpftemperatur erwärmt und dabei durch Strömungskräfte eines von einem Gebläse erzeugten Heißgasstromes unter die Unterseite des Gutstapels gelegt wird sowie anschließend der Rest der Heißschrumpffolie geschrumpft wird. Die Erfindung betrifft auch eine Vorrichtung zur Durchführung des Verfahrens mit einer Haubenüberziehstation, einer unterhalb der Haubenüberziehstation angeordneten Hebebühne sowie einer oberhalb der Hebebühne angeordneten Schrumpfeinrichtung zur Erhitzung der Heißschrumpffolie auf Schrumpftemperatur.The invention relates to a method for packaging palletized stacks of goods with a heat shrink film, in which the stack of goods is first exposed on its underside, in particular raised and wrapped with the heat shrink film in such a way that its lower edge protrudes over the stack of goods, this lower edge in the released state of the stack of goods is initially heated more than the rest of the heat shrink film to the shrink temperature and is thereby placed under the underside of the stack of goods by flow forces of a hot gas stream generated by a blower, and then the rest of the heat shrink film is shrunk. The invention also relates to a device for carrying out the method with a hood covering station, a lifting platform arranged below the hood covering station and a shrinking device arranged above the lifting platform for heating the heat shrink film to shrink temperature.

Ein Verfahren der eingangs beschriebenen Gattung ist aus der US-PS 38 07 126 bekannt. Dazu wird der auf einer Palette angeordnete Gutstapel mit Hilfe eines Förderers in einen Schrumpfofen gebracht, in dem die Heißschrumpffolie mit Heißluft geschrumpft wird. Die Heißluft wird mit einem an der Decke des Schrumpfofens angeordneten Gebläse so durch den Schrumpfofen gefördert, daß die heißluft zunächst die Seiten des Gutstapels beaufschlagt und dann durch Öffnungen unter der Palette wieder abströmen kann. Dabei ergeben sich im Bereich der unteren Kanten des Gutstapels höhere Strömungsgeschwindigkeiten, so daß der untere Rand der Heißschrumpffolie zunächst stärker erwärmt wird und unter dem Einfluß der Strömungskräfte unter die Unterseite des Gutstapels gelegt wird. Im Zuge der weiteren Wärmebehandlung wird auch dann der Rest der Heißschrumpffolie auf Schrumpftemperatur erwärmt und schrumpft. Weil sich jedoch der untere, bereits umgeschlagene Rand nicht abkühlt, besteht die Gefahr, daß beim Schrumpfprozeß der übrigen Heißschrumpffolie der untere Rand sich wieder von der Unterseite des Gutstapels löst. Nachteilig ist auch der verhältnismäßig große Raumbedarf der zur Durchführung dieses Verfahrens erforderlichen Anlage, weil Haubenüberziehstation und Schrumpfstation voneinander getrennt sind.A method of the type described above is known from US-PS 38 07 126. For this purpose, the stack of goods arranged on a pallet is brought with the aid of a conveyor into a shrinking oven in which the heat shrink film is shrunk with hot air. The hot air is conveyed through the shrinking furnace with a blower arranged on the ceiling of the shrinking furnace in such a way that the hot air first acts on the sides of the stack of material and can then flow out again through openings under the pallet. This results in higher flow velocities in the area of the lower edges of the stack of goods, so that the lower edge of the heat shrink film is initially heated to a greater extent and is placed under the underside of the stack of goods under the influence of the flow forces. In the course of the further heat treatment, the rest of the heat shrink film is then heated to shrink temperature and shrinks. However, because the lower edge, which has already been folded over, does not cool down, there is a risk that the lower edge will become detached again from the underside of the stack of materials during the shrinking process of the remaining heat shrink film. Another disadvantage is the relatively large amount of space required for the system required to carry out this method, because the hood pulling station and the shrinking station are separated from one another.

Eine Vorrichtung, bei der Haubenüberziehstation und Schrumpfstation vereinigt sind, ist aus der FR-OS 21 89 264 bekannt. Hier besteht die Schrumpfeinrichtung aus einem Rahmen, der innenseitig Infrarotstrahler aufweist. Der Rahmen ist so groß, daß er den auf der Hebebühne angeordneten Gutstapel umgibt. Durch Vertikalbewegung des Rahmens kann die den Gutstapel umgebende Heißschrumpffolie geschrumpft werden.A device in which the hood pulling station and the shrinking station are combined is known from FR-OS 21 89 264. Here the shrinking device consists of a frame which has infrared radiators on the inside. The frame is so large that it surrounds the stack of goods arranged on the lifting platform. The heat shrink film surrounding the stack of goods can be shrunk by vertical movement of the frame.

Aufgabe der Erfindung ist es, das eingangs genannte Verfahren derart weiterzuentwickeln, daß das Schrumpfergebnis am unteren Rand der Schrumpffolie wesentlich verbessert ist und mit einer Vorrichtung durchgeführt werden kann, die einfacher und platzsparender ist.The object of the invention is to further develop the method mentioned at the outset in such a way that the shrinkage result at the lower edge of the shrink film is significantly improved and can be carried out using a device which is simpler and saves space.

Diese Aufgabe wird dadurch gelöst, daß zuerst nur der untere Rand der Heißschrumpffolie mit Heißgas aus einem den Gutstapel umgebenden Ringbrenner auf Schrumpftemperatur erwärmt und mit dem Ansaugstrom eines unter dem Gutstapel angeordneten Sauggebläses gegen die Unterseite des Gutstapels gesogen wird, und daß dann die restliche Heißschrumpffolie mit dem Heißgas des Ringbrenners bei einer Relativbewegung zwischen Ringbrenner und Gutstapel geschrumpft wird.This object is achieved in that first only the lower edge of the heat shrink film is heated to shrink temperature with hot gas from a ring burner surrounding the stack of material and is sucked against the underside of the stack of material with the suction flow of a suction fan arranged under the stack of material, and that the remaining heat shrink film is then included the hot gas of the ring burner is shrunk during a relative movement between the ring burner and the stack of goods.

Im Unterschied zum vorbekannten Verfahren wird zunächst ausschließlich der untere Rand der Schrumpffolie bis auf Schrumpftemperatur erhitzt und dabei durch Luftkräfte unter den Gutstapel gezogen. Das hat den Vorteil, daß die gesamte Fläche des unteren Randes der Schrumpffolie mit Heißgas beaufschlagt und auf Schrumpftemperatur gebracht wird. Beim anschließenden Umschlagen gegen den unteren Rand des Gutstapels verkleben die aufeinanderliegenden Flächen des Randes, wodurch die Schrumpffolie in diesem Bereich einen sehr guten Halt für das nachfolgende Schrumpfen der Heißschrumpffolie an den Seitenflächen des Gutstapels erhält. Der untere Rand der Schrumpffolie kann dann kaum noch durch den weiteren Schrumpfprozeß hochgezogen werden. Die Fixierung des unteren Randes nach dem Umschlagen gegen die Unterseite des Gutstapels kann noch verbessert werden, wenn der zunächst angehobene Gutstapel mit dem noch auf Schrumpftemperatur befindlichen Rand der Heißschrumpffolie auf eine Unterlage abgesetzt wird.In contrast to the previously known method, only the lower edge of the shrink film is first heated up to the shrink temperature and is thereby drawn under the stack of materials by air forces. This has the advantage that hot gas is applied to the entire surface of the lower edge of the shrink film and brought to the shrink temperature. When subsequently turning over against the lower edge of the stack of goods, the surfaces of the edge lying on top of one another stick, as a result of which the shrink film in this area is given a very good hold for the subsequent shrinking of the heat shrink film on the side surfaces of the stack of goods. The lower edge of the shrink film can then hardly be pulled up by the further shrinking process. The fixation of the lower edge after turning over against the underside of the stack of goods can be further improved if the stack of goods initially lifted is placed on a support with the edge of the heat shrink film still at the shrinking temperature.

Zur Durchführung des Verfahrens eignet sich eine Vorrichtung, zu der eine Haubenüberziehstation, eine unterhalb der Haubenüberziehstation angeordnete Hebebühne sowie eine oberhalb der Hebebühne angeordnete Heißgas-Schrumpfeinrichtung zur Erhitzung der Schrumpffolie auf Schrumpftemperatur gehört, wobei die Schrumpfeinrichtung aus einem den Gutstapel umgebenden und vertikal längs des Gutstapels bewegbaren Ringbrenner besteht, und wobei im Bereich der Hebebühne ein Sauggebläse angeordnet ist. Dabei ist es besonders zweckmäßig, wenn die Hebebühne zum Anheben des Gutstapels Hubstempel aufweist, die in Öffnungen an der Unterseite einer Gutstapelpalette bis zur Unterseite der Oberfläche der Gutstapelpalette einfahrbar sind. Die Hubstempel behindern dann nicht mehr das Unterschrumpfen des unteren Randes der Schrumpffolie.A device is suitable for carrying out the method, which includes a hood pulling station, a lifting platform arranged below the hood pulling station and a hot gas shrinking device arranged above the lifting platform for heating the shrink film to shrink temperature, the shrinking device comprising a stack of goods surrounding the stack of goods and vertically along the stack of goods movable ring burner, and wherein a suction fan is arranged in the area of the lifting platform. It is particularly expedient if the lifting platform for lifting the stack of goods has lifting rams which can be moved into openings on the underside of a stack of goods up to the underside of the surface of the stack of goods. The lifting stamps then no longer hinder the shrinking of the lower edge of the shrink film.

In der Zeichnung ist die erfindungsgemäße Vorrichtung anhand eines Ausführungsbeispeils näher veranschaulicht. Sie zeigt eine Schrumpfstation 1, die aus einer Mastbrücke 2 und einem Ringbrenner 3 besteht.In the drawing, the device according to the invention is illustrated in more detail using an exemplary embodiment. It shows a shrinking station 1, which consists of a mast bridge 2 and a ring burner 3.

Die Mastbrücke 2 weist zwei in einer Ebene senkrecht zur Zeichnungsebene nebeneinander angeordnete Masten 4 auf, von denen hier nur der in dieser Ansicht vordere zu sehen ist. Beide Masten 4 sind an ihren oberen Enden über ein Querjoch 5 miteinander verbunden.The mast bridge 2 has two masts 4 arranged side by side in a plane perpendicular to the plane of the drawing, of which only the front one in this view can be seen here. Both masts 4 are connected to one another at their upper ends via a transverse yoke 5.

An jedem Mast 4 ist ein Laufwerk vertikal verfahrbar geführt, wobei die Führung über Rollen 7, 8 geschieht. Das vertikale Verfahren des Laufwerkes 6 wird über eine umlaufende Kette 9 bewirkt, wobei die Umlenkung an dem unteren und oberen Ende des Mastes 4 über entsprechende Kettenräder 10, 11 erfolgt.On each mast 4, a drive is guided so that it can move vertically, the guidance being done via rollers 7, 8. The vertical movement of the carriage 6 is effected via a circulating chain 9, the deflection at the lower and upper ends of the mast 4 taking place via corresponding chain wheels 10, 11.

Ein entsprechendes Laufwerk ist auch an dem hier nicht sichtbaren Mast angeordnet, wobei beide Laufwerke 6 derart miteinander synchronisiert sind, daß sie sich immer auf gleicher Höhe befinden. Die Laufwerke 6 werden durch den Ringbrenner 3 miteinander verbunden, der eine rechteckige, rahmenartige Form hat, wobei die von ihm eingeschlossene Fläche groß genug ist, damit der Ringbrenner 3 vertikal über -einen Gutstapel verfahren werden kann.A corresponding drive is also arranged on the mast, which is not visible here, the two drives 6 being synchronized with one another in such a way that they are always at the same height. The drives 6 are connected to one another by the ring burner 3, which has a rectangular, frame-like shape, the area enclosed by it being large enough so that the ring burner 3 can be moved vertically over a stack of goods.

Ein solcher Gutstapel 12 befindet sich unterhalb des Ringbrenners 3 auf einer Rollenförderbahn 13. Der Gutstapel 12 besteht dabei aus einer üblichen Palette 14 und dem darauf gestapelten Gut 15.Such a stack of goods 12 is located below the ring burner 3 on a roller conveyor 13. The stack of goods 12 consists of a conventional pallet 14 and the goods 15 stacked thereon.

Unterhalb des Gutstapels 12 befindet sich eine Hebebühne bzw. Hubeinrichtung 16, die hier schematisch als Scherenheber dargestellt ist. An der Oberseite der Hubeinrichtung 16 ragen Hubstempel 17, 18 durch entsprechende Lücken in der Rollenförderbahn 13 nach oben zwischen die Standleisten 19 der Palette 14. Zwischen den Hubstempeln 17, 18 und unterhalb der Rollenförderbahn 13 ist noch ein schematisch dargestelltes Sauggebläse 20 angeordnet.Below the stack of goods 12 is a lifting platform or lifting device 16, which is shown here schematically as a scissor lift. On the upper side of the lifting device 16, lifting rams 17, 18 project upwards through corresponding gaps in the roller conveyor path 13 between the base strips 19 of the pallet 14. Between the lifting rams 17, 18 and below the roller conveyor path 13, a schematically illustrated suction fan 20 is also arranged.

Das erfindungsgemäße Verfahren geht mit dieser Vorrichtung wie folgt vor sich.The method according to the invention proceeds with this device as follows.

Nachdem der Gutstapel 12 in die gezeigte Stellung befördert worden ist, wird der Ringbrenner 3 bis auf das Niveau der Rollenförderbahn 13 durch entsprechendes Verfahren der Laufwerke 6 abgesenkt. Dann wird der Gutstapel 12 durch Anheben der Hubstempel 17, 18 mittels der Hubeinrichtung 16 um etwa die Höhe der Palette 14 angehoben, beispielsweise um etwa 15 cm. Anschließend wird die Schrumpffolie mit einer an sich bekannten, hier nicht näher dargestellten Haubenüberzieheinrichtung von oben über den Gutstapel 12 so weit nach unten gezogen, daß der untere Rand der Schrumpffolie nach unten über die Unterseite des Gutstapels 12 bzw. der Palette 14 vorsteht. Danach wird die Haubenüberziehmaschine wieder zurückgefahren.After the stack of goods 12 has been conveyed into the position shown, the ring burner 3 is lowered to the level of the roller conveyor path 13 by a corresponding movement of the drives 6. Then the stack of goods 12 is raised by lifting the lifting rams 17, 18 by means of the lifting device 16 by approximately the height of the pallet 14, for example by approximately 15 cm. Then the shrink film is pulled down with a known hood covering device, not shown here, from above over the stack of goods 12 so far that the lower edge of the shrink film projects downwards over the underside of the stack of goods 12 or the pallet 14. The hood pulling machine is then moved back again.

Nun wird zunächst der untere Rand der Schrumpffolie durch den Ringbrenner 3 mit Heißgas beaufschlagt, so daß er sich auf seine Schrumpftemperatur erhitzt und dabei unter die Unterseite der Palette 14 zusammenzieht. Dies wird dabei noch unterstützt durch das Sauggebläse 18.Now the lower edge of the shrink film is subjected to hot gas through the ring burner 3, so that it heats up to its shrinking temperature and contracts under the underside of the pallet 14. This is supported by the suction fan 18.

Anschließend wird der Gutstapel 12 bei noch erhitztem Rand der Schrumpffolie wieder auf die Rollenförderbahn 13 abgesenkt, wodurch der heiße Rand zwischen den Rollen der Rollenförderbahn 13 und der Unterseite der Palette 14 mit dem Effekt zusammengepreßt wird, daß eine Verschweißung der einzelnen Lagen dieses Randes stattfindet. Hierdurch erhält der untere Rand der Schrumpffolie einen extrem guten Halt.The stack of goods 12 is then lowered again onto the roller conveyor 13 while the edge of the shrink film is still heated, whereby the hot edge between the rollers of the roller conveyor 13 and the underside of the pallet 14 is pressed together with the effect that the individual layers of this edge are welded together. This gives the lower edge of the shrink film an extremely good hold.

Mit dem Absenken des Gutstapels 12 beginnt dann auch die Vertikalbewegung des Ringbrenners 3 nach oben. Die Schrumpffolie zieht sich dabei über die Seitenflächen stark zusammen. Mit Erreichen der Oberkante des Gutstapels 12 wird der Ringbrenner 3 angehalten, um das Schrumpfen an der Oberseite des Gutstapels 12 zu bewirken. Nach Abschluß des Schrumpfprozesses kann dann der Gutstapel 12 aus der Schrumpfstation 1 über die Rollenförderbahn 13 herausgefahren werden. Für einen neuen Gutstapel wiederholt sich dann das vorbeschriebene Verfahren.With the lowering of the stack of goods 12, the vertical movement of the ring burner 3 then begins. The shrink film contracts strongly over the side surfaces. When the top edge of the stack of goods 12 is reached, the ring burner 3 is stopped in order to cause shrinkage on the top of the stack of goods 12. After completion of the shrinking process, the stack of goods 12 can then be moved out of the shrinking station 1 via the roller conveyor track 13. The procedure described above is then repeated for a new stack of goods.

Claims (4)

1. A method of packing palettised stacks of goods (12) with a heat-shrink foil, wherein the stack of goods (12) is at first left open at the bottom, in particular is lifted and wrapped with the heat-shrink foil in such a way that the lower edge of the foil projects below the stack of goods (12), and, in the unwrapped condition of the stack of goods (12), is at first heated more strongly than the rest of the heat-shrink foil up to shrinking temperature and simultaneously laid beneath the stack of goods (12) under the force of a hot gas stream from a blower (20), and the rest of the heat-shrink foil is then shrunk, characterised in that at first only the lower edge of the heat-shrink foil is heated to shrinking temperature by a hot gas stream from a ring burner (3) surrounding the stack of goods (12) and sucked towards the underside of the stack of goods (12) by the vacuum current of a suction fan (20) disposed beneath the stack of goods (12), and in that the remaining heat-shrink foil is schrunk by the hot gas of the ring burner (3) during relative movement between the ring burner (3) and the stack of goods (12).
2. A method according to claim 1, characterised in that the stack of goods (12), which is at first lifted, is lowered onto a support (13) with the edge of the heat-shrink foil still at shrinking temperature.
3. Apparatus for carrying out the method according to claim 1 or 2 with a foil-covering station, a lifting platform arranged below the foil-covering station, and a hot gas shrinking device for heating the foil to shrinking temperature, characterised in that the hot gas shrinking device (1) has a ring burner (3) surrounding the stack of goods (12) and being vertically movable along the stack of goods (12), and in that a suction fan (20) is arranged in the region of the lifting platform (16).
4. Apparatus according to claim 3, characterised in that the lifting platform (16) has lifting posts (17, 18) movable into openings on the underside of a goods palette (14) up to the underside of the top of the goods palette (14).
EP84107065A 1983-08-03 1984-06-20 Method of packing pallettised stacks of goods, and device for carrying out the method Expired - Lifetime EP0133462B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84107065T ATE28607T1 (en) 1983-08-03 1984-06-20 METHOD FOR PACKING PALLETIZED STACKS OF GOODS AND DEVICE FOR PERFORMING THIS METHOD.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833327996 DE3327996A1 (en) 1983-08-03 1983-08-03 METHOD FOR PACKING PALLETIZED GOODS STACKS AND DEVICE FOR CARRYING OUT THIS METHOD
DE3327996 1983-08-03

Publications (4)

Publication Number Publication Date
EP0133462A2 EP0133462A2 (en) 1985-02-27
EP0133462A3 EP0133462A3 (en) 1986-03-05
EP0133462B1 true EP0133462B1 (en) 1987-07-29
EP0133462B2 EP0133462B2 (en) 1994-04-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP84107065A Expired - Lifetime EP0133462B2 (en) 1983-08-03 1984-06-20 Method of packing pallettised stacks of goods, and device for carrying out the method

Country Status (6)

Country Link
US (1) US4616471A (en)
EP (1) EP0133462B2 (en)
JP (1) JPS6058319A (en)
AT (1) ATE28607T1 (en)
DE (2) DE3327996A1 (en)
ZA (1) ZA846037B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4426369C1 (en) * 1994-07-26 1995-08-17 Moellers Maschf Gmbh Shrink wrapping of film around product stock
DE4404599A1 (en) * 1994-02-12 1995-08-17 Moellers Maschf Gmbh Method of packing palleted stacks of goods with shrink-fit foil cover

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Publication number Priority date Publication date Assignee Title
DE3521416A1 (en) * 1985-06-14 1986-12-18 MSK - Verpackungs-Systeme GmbH, 4190 Kleve METHOD FOR PACKING A PACK OF GOODS ARRANGED ON A PALLET, AND DEVICE FOR IMPLEMENTING THE METHOD
DE3621297A1 (en) * 1986-06-25 1988-01-14 Moellers Maschf Gmbh DEVICE FOR PULLING ON AND SHRINKING A SHRINK FILM HOOD OVER OR ON A STACK.
DE3633680A1 (en) * 1986-10-03 1988-04-14 Dentz Verpackungsmaschinen Gmb DEVICE FOR SHRINKING PACKAGING FILMS
DE3639472A1 (en) * 1986-11-18 1988-05-19 Moellers Maschf Gmbh DEVICE FOR PRODUCING A PACKAGING UNIT COMPLETELY COVERED WITH SHRINK FILM
DE8708145U1 (en) * 1987-06-06 1987-08-06 MSK-Verpackungs-Systeme GmbH, 4190 Kleve Device for shrinking shrink hoods that surround a palletized stack of goods
FR2644136B1 (en) * 1989-03-08 1991-05-03 Balgros Jacques HOT AIR RETRACTION DEVICE
DE8907610U1 (en) * 1989-06-22 1989-08-17 MSK-Verpackungs-Systeme GmbH, 4190 Kleve Device for shrinking a shrink hood pulled over a stack of goods
EP0519116B1 (en) * 1990-09-13 1995-08-16 DEVELOG, REINER HANNEN & CIE Method for covering a stack of articles with a stretchfoil hood and device for carrying out the method
DE4301361C1 (en) * 1993-01-20 1994-03-24 Baust & Co Gmbh Lifting station for wrapping loaded pallets in shrink film - has bearer which is vertically movable on lifting device and has erector operated by controller on frame
DE4318753A1 (en) * 1993-06-05 1994-12-08 Dentz Verpackungsmaschinen Gmb Device for shrinking packaging films on packaging material units
DE4423513C1 (en) * 1993-10-26 1996-02-01 Moellers Maschf Gmbh Device for shrinking a shrink film hood
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
JPH07331499A (en) * 1994-06-06 1995-12-19 Agency Of Ind Science & Technol Production of metal having porous surface
ES2183785T3 (en) * 1999-01-28 2003-04-01 Msk Verpackung Syst Gmbh DEVICE FOR THE CONTRA6ATION OF A HOT CONTRACT SHEET.
FR2792609B1 (en) 1999-04-26 2001-07-13 Thimon HANDLING DEVICE FOR LAYING A HEAT SHRINKABLE PLASTIC SHEATH ON A PALLETIZED LOAD
DE20018815U1 (en) * 2000-11-03 2001-03-15 Kirschsieper, Rolf, 45886 Gelsenkirchen Transport and storage device
DE102008031236A1 (en) * 2008-07-02 2010-01-07 Rwe Power Ag Method and device for strapping at least one stack of shaped fuel bodies
CN102673836A (en) * 2012-06-11 2012-09-19 常州市成功建材机械有限公司 Fuel gas heat shrinkable film equipment
CN104787397A (en) * 2014-01-16 2015-07-22 珠海格力电器股份有限公司 Heat shrinkage method for packaging bag of water chilling unit

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US3662512A (en) * 1968-01-24 1972-05-16 Weldotron Corp Method and apparatus for shrink-film wrapping a pallet load
SE335498B (en) * 1968-02-07 1971-05-24 E Gustavsson
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US3930790A (en) * 1971-04-08 1976-01-06 Ethyl Corporation Method and apparatus for shrinking plastic film over grouped articles
JPS5018655B2 (en) * 1971-12-24 1975-07-01
JPS4871261A (en) * 1971-12-25 1973-09-27
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IT1101694B (en) * 1978-02-18 1985-10-07 Moellers Maschf DEVICE FOR UNIFORM PARTS OF Shrinkage COVER SHEETS IN LATERAL RE-ENTERING AREAS OF A STACK
DE3117531A1 (en) * 1981-05-04 1982-11-18 Kurt Lachenmeier ApS, 6400 Soenderborg METHOD AND APPARATUS FOR PACKAGING STACKS AND THE LIKE WITH A HOT SHRINK FILM
DE3200832A1 (en) * 1982-01-14 1983-07-21 Msk - Verpackungs-Systeme Gmbh, 4192 Kalkar Device for packaging palletised stacks of goods

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4404599A1 (en) * 1994-02-12 1995-08-17 Moellers Maschf Gmbh Method of packing palleted stacks of goods with shrink-fit foil cover
DE4426369C1 (en) * 1994-07-26 1995-08-17 Moellers Maschf Gmbh Shrink wrapping of film around product stock

Also Published As

Publication number Publication date
US4616471A (en) 1986-10-14
DE3327996A1 (en) 1985-02-14
JPS6058319A (en) 1985-04-04
EP0133462A3 (en) 1986-03-05
JPH0543577B2 (en) 1993-07-02
ATE28607T1 (en) 1987-08-15
EP0133462A2 (en) 1985-02-27
EP0133462B2 (en) 1994-04-20
ZA846037B (en) 1985-03-27
DE3465052D1 (en) 1987-09-03

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