EP1350720B1 - Method and apparatus for packaging a stack of articles - Google Patents

Method and apparatus for packaging a stack of articles Download PDF

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Publication number
EP1350720B1
EP1350720B1 EP03001491A EP03001491A EP1350720B1 EP 1350720 B1 EP1350720 B1 EP 1350720B1 EP 03001491 A EP03001491 A EP 03001491A EP 03001491 A EP03001491 A EP 03001491A EP 1350720 B1 EP1350720 B1 EP 1350720B1
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EP
European Patent Office
Prior art keywords
plate
film
stack
packageable
cover sheet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03001491A
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German (de)
French (fr)
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EP1350720A1 (en
Inventor
Willy Wanders
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Erapa-Lenzen & Co KG GmbH
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Erapa-Lenzen & Co KG GmbH
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Publication of EP1350720A1 publication Critical patent/EP1350720A1/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
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/58—Applying two or more wrappers, e.g. in succession
    • B65B11/585—Applying two or more wrappers, e.g. in succession to stacked articles, e.g. pallettised loads
    • 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
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/02—Wrapping articles or quantities of material, without changing their position during the wrapping operation, e.g. in moulds with hinged folders
    • B65B11/025—Wrapping articles or quantities of material, without changing their position during the wrapping operation, e.g. in moulds with hinged folders by webs revolving around stationary articles

Definitions

  • the invention relates firstly to a method for packaging a flat top and sidewalls having Packgutstapels, in which an overlaid on the top and with its edge on all sides over the top of the stack of goods protruding cover sheet covered in the course of the provision of the side walls of the stack of packaged goods with this and is fixed to the side walls.
  • the invention relates to a packaging device for a flat top and sidewalls having Packgutstapel.
  • An apparatus for packaging a stack of packaged goods is known e.g. known from DE 199 58 292 A1.
  • the side walls of the packaged goods stack is provided with foil in such a way that the packaged product is wrapped with a foil pulled from a film roll.
  • the film distributor used here which is guided around the packaged goods on a circular path, is additionally axially, i. movable in the height direction, so as to put the mutually offset turns of the packaging winding.
  • the invention has for its object to provide a solution to the above problem with the aim to prevent air pockets between the top of the stack of packaged goods and the cover sheet.
  • a method according to the preamble of claim 1 is known from US-A-5 048 261.
  • a flexible material web for fixing the cover sheet is described for example in EP-A-0 336 517.
  • a plate preferably arranged above the stack of packaged goods is lowered onto the upper side and thus onto the cover sheet located there.
  • the first remaining air between the top of the packaged product stack and the underside of the cover sheet is pushed out.
  • This state is maintained until the protruding edge of the cover sheet is covered in a subsequent step by the film with which the side walls of the packaged goods are provided, and fixed to these side walls.
  • Significant cavities between top pack stack and bottom cover sheet are prevented in this way even after the plate used to squeeze the air was removed by lifting again.
  • the inventive method is particularly suitable for packaging machines that operate on the winding principle, in which therefore the side surfaces of the stack of packaged goods are provided by wrapping with foil.
  • the method described is also suitable for other types of packaging technology, for example for packaging machines, in which the provision of the side surfaces of the stack of packaged goods with film is carried out by stretching or by a shrinking process.
  • the plate is deformable and initially only comes with a part of its total area in contact with the top of the pack stack when lowering, and that only then reach the other areas of the plate in contact with the top. This will improve the air squeezing out between the air Top of the packaged goods and the cover sheet reached. Air pockets are particularly well avoided in this way.
  • the plate deforms from a curved or curved shape into a flat shape during the lowering as a result of the contact with the top side of the packaged goods stack.
  • a packaging device for a flat upper side and side walls having Packgutstapel which is characterized by a stack above the Packgutstapels plate and means for lowering the plate on the top of the stack of packaged goods, the plate in the lowered state on all sides at least to the Top edge of the stack of goods enough.
  • the plate is deformable and has on its underside a first portion and at least one further portion, wherein in an only partially lowered state, only the first portion, and in the fully lowered state all areas are in contact with the top of the stack of packaged goods.
  • the air accumulated between the top and the top sheet is squeezed out particularly effectively in the direction of the top edges of the stack of packagings.
  • the first portion is located at the center of either the length or the width of the underside of the plate.
  • the plate is curved or curved and deformable to the extent that it deforms when lowered onto the top of the stack of packaged goods into a planar shape. During this deformation, the accumulated air is pushed further and further to the outer edge of the stack of packaged goods, where it can escape under the cover sheet.
  • the plate is connected to a carrier plate arranged above it, which is flat on its underside, behaves rigidly and can be lowered by means of the lowering device in the direction of the pack stack.
  • a carrier plate arranged above it which is flat on its underside, behaves rigidly and can be lowered by means of the lowering device in the direction of the pack stack.
  • the lowering device comprises a scissor lift, the lower end of which is articulated on the upper side of the carrier plate, and whose upper end is articulated on a stationary frame of the packaging device.
  • the plate is connected to the carrier plate exclusively in the region of two mutually parallel edges.
  • the plate can be movably connected to the carrier plate at least at one of the two mutually parallel edges in the horizontal direction. This allows a length compensation of the deformable plate with respect to the predominantly rigidly behaving support plate.
  • Another embodiment of the packaging device is characterized by air nozzles, which are arranged in the region of the edges of the plate and / or the support plate, and whose flow outlet is directed inwardly under the plate.
  • the use of these air nozzles improves the application of the protruding edge of the cover sheet on the side surfaces of the stack of packaged goods, before this edge is then coated with foil and fixed in this way.
  • a plate made of perforated sheet is proposed with a further embodiment.
  • Such formation of the plate facilitates the escape of the air that is between the top of the topsheet and the bottom of the plate. At least part of this air can escape upwards through said holes of the plate.
  • Figures 1 to 5 in different process stages provided with a winding device packaging machine for packing stacks of packaged goods.
  • the drawing shows a side view of a packaging machine for a loaded with a stack of goods 1 pallet 2.
  • the packaging of the piece goods or the stack of packaged goods by wrapping with packaging film, including a ring 4 is arranged on a frame 3 of the packaging machine, along which a film distributor around the stack 1 is feasible.
  • the ring 4 forms the stator of a winding device.
  • Another component of the winding device is a winding slide 4a, which can be moved along the ring 4, for which purpose the slide is provided, for example, with a suitable electric drive.
  • the film distributor 5 consisting of a film roll arranged therein and preferably a plurality of rollers, over which the withdrawn from the film roll packaging film is guided when it is wrapped around the stackable piece 1 stack.
  • either the carriage 4a or the film distributor 5 is in height, i. movable with respect to the winding axis in the axial direction, so as to achieve the vertical propulsion during the winding process.
  • the carriage 4a moves along the fixed ring 4, so that the plastic film discharged from the film distributor 5 wraps around the side walls 6 of the packaged goods.
  • the winding movement is accompanied by a superimposed axial movement in which either the carriage 4a, the film distributor 5 or the ring 4 arranged in the frame 3 is lowered or raised in the manner already described. In this way arises in Figure 1 on the packaged 1 well recognizable, approximately helical winding of the winding film.
  • a cover sheet 8 is placed there during the winding process, cf.
  • the cover sheet 8 is subtracted from a mounted on the frame 3 film roll 9 and pulled substantially horizontally over the top 7 over, including their own technical facilities are available.
  • the peeled off from the film roll 9 cover sheet is by means of suitable Cut devices then cut, whereupon a scattered cover sheet 8 is formed, which deposits under gravity on the top 7 of the stack of articles 1, see. 2).
  • this cover sheet 8 is dimensioned such that it protrudes on all sides with an edge 8a over the upper edge 12 of the stack of articles 1.
  • the width and the length of the cover sheet 8 20 cm to 40 cm larger than the corresponding width or length of the top 7 of the stack of lumps 1.
  • a device for squeezing that air which is located after placing the cover sheet 8 in the cavity 13 between the bottom and the top 7 of the stack of articles.
  • This device consists of a deformable plate 15, a substantially rigidly behaving support plate 16 above the plate 15 and a lifting or lowering device 17.
  • the lifting or lowering device 17 is in the illustrated embodiment, a motor-driven scissor lifter, with the help itself lower the carrier plate 16 and raise it again.
  • the plate 15 is arranged on the underside of the carrier plate 16 and consists in the embodiment of a perforated plate.
  • the plate 15 is relatively thin-walled, which is why it bends down as a result of its own weight in the manner shown in Figures 1 and 2. Only in the region of the two mutually parallel edges 20 of the support plate 16, the plate 15 is connected to the support plate, which is why the plate 15 can bend freely on its interposed length.
  • the connection between plate 15 and support plate 16 is not rigid in the region of the edges 20, but movable in the horizontal direction. In this way, the perforated plate 15, as soon as its bending is transferred to a stretch, relative to the support plate 16 can expand unhindered.
  • the plate 15 initially only in the region of its strongest deflection, which portion is provided in Figure 3 by the reference T, in contact with the cover sheet 8. Only in the course of further lowering of the support plate 16 then put all other areas of the plate 15 to the cover sheet 8, which is shown in Figure 4. In this way, the between the top 7 of the cargo stack 1 and the cover sheet 8 accumulated residual air squeezed from the inside out before it escapes in the region of the upper edges 12. After the support plate 16 has completely lowered with the plate 15, the plate 15 is flush and just on top of the cargo stack, significant air bubbles or air pockets are no longer present between this top and the cover sheet 8.
  • the plate 15 extends in a lowered state on all sides at least up to the top edge 12 of the packaged goods.
  • the plate 15 in the region of its edges about 5 to 10 cm larger than the top 7 of the stack of packs. 1
  • the above-described lowering of the plate 15 and thus the squeezing out of the air from the cavity 13 under the cover sheet 8 is preferably carried out at a time (Fig. 4), to which the winding process for the side walls 6 of the packaged goods 1 is not yet completed, and especially the upper windings are missing.
  • 16 air nozzles 22 are arranged on the plate 15 or the support plate.
  • the flow outlets of the air nozzles 22 are directed inwardly below the plate 15, whereby an air flow is generated, which presses the protruding edge of the cover sheet 8 against the respective side walls 6 of the stack of pieces 1 until the last winding or the last windings are done and on this way the edges 8a of the cover sheet are covered and fixed to the side walls, as shown in FIG.
  • the air nozzles 22 can be switched off again, also plate 15 and support plate 16 are raised back to its upper rest position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Stacking Of Articles And Auxiliary Devices (AREA)
  • Container Filling Or Packaging Operations (AREA)
  • Packaging Of Special Articles (AREA)

Abstract

The procedure for the packing of a stack (1) of packed goods having a flat top side and sidewalls entails the lowering of a horizontal plate (15) onto the stack until resting upon the top side (7). In the lowered position the plate on all sides reaches at least the upper edge (12) of the stacked goods. The lowering of the plate is carried out subsequent to the laying of a cover sheet (8) and before fixing of the edge (8a) of the cover sheet by means of packing film. An Independent claim is included for a packing device for a stack of packed goods with a flat top side and sidewalls which includes a plate and device to lower it onto the top side of the stack.

Description

Die Erfindung betrifft zunächst ein Verfahren zum Verpacken eines eine flache Oberseite und Seitenwände aufweisende Packgutstapels, bei dem ein auf die Oberseite aufgelegtes und mit seinem Rand allseitig über die Oberkante des Packgutstapels vorstehendes Deckblatt im Laufe des Versehens der Seitenwände des Packgutstapels mit Verpackungsfolie von dieser abgedeckt und an den Seitenwänden fixiert wird.The invention relates firstly to a method for packaging a flat top and sidewalls having Packgutstapels, in which an overlaid on the top and with its edge on all sides over the top of the stack of goods protruding cover sheet covered in the course of the provision of the side walls of the stack of packaged goods with this and is fixed to the side walls.

Ferner betrifft die Erfindung eine Verpackungsvorrichtung für einen eine flache Oberseite sowie Seitenwände aufweisenden Packgutstapel.Furthermore, the invention relates to a packaging device for a flat top and sidewalls having Packgutstapel.

Eine Vorrichtung zum Verpacken eines Packgutstapels ist z.B. aus der DE 199 58 292 A1 bekannt. Bei dieser Vorrichtung erfolgt das Versehen der Seitenwände des Packgutstapels mit Folie in der Weise, dass das Packgut mit einer von einer Folienrolle abgezogenen Folie umwickelt wird. Der hierbei verwendete, auf einer Ringbahn um das Packgut herumgeführte Folienverteiler ist zusätzlich axial, d.h. in Höhenrichtung verfahrbar, um so die zueinander versetzten Windungen der Verpackungswicklung zu legen.An apparatus for packaging a stack of packaged goods is known e.g. known from DE 199 58 292 A1. In this device, the side walls of the packaged goods stack is provided with foil in such a way that the packaged product is wrapped with a foil pulled from a film roll. The film distributor used here, which is guided around the packaged goods on a circular path, is additionally axially, i. movable in the height direction, so as to put the mutually offset turns of the packaging winding.

Bei vielen Gütern ist angestrebt, nicht nur die Seitenwände des Packgutstapels, sondern auch dessen Oberseite mit einer schützenden Folienschicht zu versehen. Hierzu ist es üblich, dass vor dem Fertigstellen der Wicklungen für die Seitenwände zunächst ein Deckblatt auf der Oberseite des Packgutstapels abgelegt wird, wobei die Größe dieses Deckblatts die Größe der Oberseite des Packgutstapels übersteigt, und daher die Ränder des Deckblatts über die Oberkante vorstehen. Dieser Rand wird von den letzten, den oberen Bereich der Seitenwände erfassenden Wicklungen erfasst und gleichsam mit eingewickelt.In the case of many goods, it is desirable to provide not only the side walls of the stack of packagings, but also the upper side thereof with a protective film layer. For this purpose, it is customary that, before the windings for the sidewalls are finished, a cover sheet is first deposited on top of the stack of packagings, the size of this cover sheet exceeding the size of the top of the stack of packagings, and therefore projecting the edges of the cover sheet over the top edge. This edge is detected by the last, the upper area of the side walls detecting windings and wrapped as it were.

Als nachteilig hat sich herausgestellt, dass Luft, die sich nach dem Auflegen des Deckblattes zwischen dessen Unterseite und der Oberseite des Packgutstapels befindet, auf diese Weise mit eingeschlossen wird. Auf der Oberseite des Packgutstapels verbleiben daher unerwünschte Luftpolster oder Luftblasen.A disadvantage has been found that air, which is located after placing the cover sheet between the bottom and the top of the stack of packaged goods, is included in this way. Therefore, unwanted air cushions or air bubbles remain on the top side of the stack of packagings.

Der Erfindung liegt die Aufgabe zugrunde, eine Lösung für das voranstehend angegebene Problem mit dem Ziel bereitzustellen, Lufteinschlüsse zwischen der Oberseite des Packgutstapels und dem Deckblatt zu verhindern.The invention has for its object to provide a solution to the above problem with the aim to prevent air pockets between the top of the stack of packaged goods and the cover sheet.

Zur Lösung dieser Aufgabe wird ein Verfahren gemäss Anspruch 1 vorgeschlagen. Ein Verfahren nach dem Oberbegriff des Anspruchs 1 ist aus US-A-5 048 261 bekannt. Hier dient eine flexible Materialbahn zur Festlegung des Deckblattes. Die Verwendung einer starren Platte ist beispielsweise in EP-A-0 336 517 beschrieben.To solve this problem, a method according to claim 1 is proposed. A method according to the preamble of claim 1 is known from US-A-5 048 261. Here is a flexible material web for fixing the cover sheet. The use of a rigid plate is described for example in EP-A-0 336 517.

Erfindungsgemäß ist daher vorgesehen, dass nach dem Auflegen des Deckblatts auf die Oberseite des Packgutstapels eine vorzugsweise oberhalb des Packgutstapels angeordnete Platte auf die Oberseite und damit auf das dort befindliche Deckblatt abgesenkt wird. Hierdurch wird die zwischen der Oberseite des Packtgutstapels und der Unterseite des Deckblatts zunächst noch vorhandene Luft herausgedrückt. Dieser Zustand wird solange aufrecht erhalten, bis der überstehende Rand des Deckblattes in einem anschließenden Schritt von jener Folie, mit der die Seitenwände des Packgutstapels versehen werden, abgedeckt und an diesen Seitenwänden fixiert wird. Verhindert werden auf diese Weise nennenswerte Hohlräume zwischen Oberseite Packgutstapel und Unterseite Deckblatt auch dann noch, nachdem die zum Herausquetschen der Luft verwendete Platte wieder durch Abheben entfernt wurde.According to the invention it is therefore provided that, after placing the cover sheet on the top of the stack of packaged material, a plate preferably arranged above the stack of packaged goods is lowered onto the upper side and thus onto the cover sheet located there. As a result, the first remaining air between the top of the packaged product stack and the underside of the cover sheet is pushed out. This state is maintained until the protruding edge of the cover sheet is covered in a subsequent step by the film with which the side walls of the packaged goods are provided, and fixed to these side walls. Significant cavities between top pack stack and bottom cover sheet are prevented in this way even after the plate used to squeeze the air was removed by lifting again.

Das erfindungsgemäße Verfahren eignet sich in besonderer Weise für Verpackungsmaschinen, die nach dem Wickelprinzip arbeiten, bei denen also die Seitenflächen des Packgutstapels durch Umwickeln mit Folie versehen werden. Grundsätzlich ist das beschriebene Verfahren jedoch auch für andere Arten der Verpackungstechnik geeignet, zum Beispiel für Verpackungsmaschinen, bei denen das Versehen der Seitenflächen des Packgutstapels mit Folie durch Stretchen oder durch ein Schrumpfverfahren durchgeführt wird.The inventive method is particularly suitable for packaging machines that operate on the winding principle, in which therefore the side surfaces of the stack of packaged goods are provided by wrapping with foil. In principle, however, the method described is also suitable for other types of packaging technology, for example for packaging machines, in which the provision of the side surfaces of the stack of packaged goods with film is carried out by stretching or by a shrinking process.

Im Rahmen der Erfindung ist weiterhin vorgesehen, dass die Platte verformbar ist und beim Absenken zunächst nur mit einem Teil ihrer Gesamtfläche in Kontakt mit der Oberseite des Packgutstapels gelangt, und dass erst anschließend auch die übrigen Bereiche der Platte in Kontakt mit der Oberseite gelangen. Dadurch wird ein verbessertes Herausquetschen der Luft zwischen der Oberseite des Packgutstapels und dem Deckblatt erreicht. Luftnester werden auf diese Weise besonders gut vermieden. Hierbei ist es von zusätzlichem Vorteil, wenn der Kontakt der Platte mit der Oberseite auf der Mitte entweder der Länge oder der Breite der Oberseite erfolgt. Die Platte kommt daher zunächst auf der Mitte der Oberseite des Packgutstapels in Kontakt mit der Oberseite, und anschließend wird die Luft von dort aus zu den Rändern hin aus dem Spalt zwischen Oberseite und Deckblatt herausgequetscht. Ein solches Verfahren ist besonders effektiv und zeitsparend.In the context of the invention, it is further provided that the plate is deformable and initially only comes with a part of its total area in contact with the top of the pack stack when lowering, and that only then reach the other areas of the plate in contact with the top. This will improve the air squeezing out between the air Top of the packaged goods and the cover sheet reached. Air pockets are particularly well avoided in this way. In this case, it is additionally advantageous if the contact of the plate with the upper side takes place on the middle of either the length or the width of the upper side. The plate therefore first comes into contact with the upper side on the middle of the upper side of the stack of packagings, and then the air is squeezed out from there to the edges out of the gap between the upper side and the cover sheet. Such a method is particularly effective and time-saving.

Mit einer weiteren Ausgestaltung des Verfahrens wird vorgeschlagen, dass die Platte sich während des Absenkens in Folge des Konaktes mit der Oberseite des Packgutstapels von einer gebogenen oder gekrümmten Gestalt in eine flache Gestalt verformt.With a further embodiment of the method, it is proposed that the plate deforms from a curved or curved shape into a flat shape during the lowering as a result of the contact with the top side of the packaged goods stack.

Um das Anlegen des Randes des Deckblattes an die Seitenwände des Packgutstapels zu verbessern, kann nach dem Absenken der Platte eine auf den über die Oberkante des Packgutstapels vorstehenden Rand des Deckblatts gerichtete und diesen gegen die jeweilige Seitenwand legende Luftströmung erzeugt werden, wobei diese Luftströmung für die Dauer des Fixieren des Randes aufrechterhalten wird.In order to improve the application of the edge of the cover sheet to the side walls of the stack of packaged after lowering the plate directed to the above the top of the stack of goods stack edge of the cover sheet and this legend laying against the respective side wall air flow are generated, said air flow for the Duration of fixing the edge is maintained.

Es wird ferner eine Verpackungsvorrichtung für einen eine flache Oberseite sowie Seitenwände aufweisenden Packgutstapel beschrieben, welche sich auszeichnet durch eine oberhalb des Packgutstapels angeordnete Platte sowie eine Einrichtung zum Absenken der Platte auf die Oberseite des Packgutstapels, wobei die Platte in abgesenktem Zustand allseitig mindestens bis zur der Oberkante des Packgutstapels reicht.It is further described a packaging device for a flat upper side and side walls having Packgutstapel, which is characterized by a stack above the Packgutstapels plate and means for lowering the plate on the top of the stack of packaged goods, the plate in the lowered state on all sides at least to the Top edge of the stack of goods enough.

Die Platte ist verformbar und sie weist an ihrer Unterseite einen ersten Teilbereich sowie mindestens einen weiteren Teilbereich auf, wobei in einem nur teilweise abgesenktem Zustand nur der erste Teilbereich, und in vollständig abgesenktem Zustand alle Bereiche in Kontakt mit der Oberseite des Packgutstapels stehen. Auf diese Weise wird die zwischen der Oberseite und dem Deckblatt angesammelte Luft besonders wirkunsvoll in Richtung auf die Oberkanten des Packgutstapels herausgequetscht. Hierzu ist ferner von Vorteil, wenn sich der erste Teilbereich auf der Mitte entweder der Länge oder der Breite der Unterseite der Platte befindet.The plate is deformable and has on its underside a first portion and at least one further portion, wherein in an only partially lowered state, only the first portion, and in the fully lowered state all areas are in contact with the top of the stack of packaged goods. In this way, the air accumulated between the top and the top sheet is squeezed out particularly effectively in the direction of the top edges of the stack of packagings. For this purpose, it is also advantageous if the first portion is located at the center of either the length or the width of the underside of the plate.

Mit einer weiteren Ausgestaltung wird vorgeschlagen, dass die Platte gebogen oder gekrümmt gestaltet und soweit verformbar ist, dass sie sich beim Absenken auf die Oberseite des Packgutstapels bis in eine ebene Gestalt verformt. Während dieses Verformens wird die angesammelte Luft immer weiter zur Außenkante des Packgutstapels gedrängt, und kann dort unter dem Deckblatt entweichen.With a further embodiment, it is proposed that the plate is curved or curved and deformable to the extent that it deforms when lowered onto the top of the stack of packaged goods into a planar shape. During this deformation, the accumulated air is pushed further and further to the outer edge of the stack of packaged goods, where it can escape under the cover sheet.

Gemäß einer weiteren Ausgestaltung ist die Platte mit einer über ihr angeordneten Trägerplatte verbunden, die an ihrer Unterseite eben ist, sich starr verhält und mittels der Absenkeinrichtung in Richtung auf den Packgutstapel absenkbar ist. Eine solche gleichsam zweiteilige Ausgestaltung der Platte ist von Vorteil, da sich die oberhalb angeordnete und an ihrer Unterseite ebene Trägerplatte starr verhält, und sich die unterhalb angeordnete Platte daher nur bis in einen Zustand verformen kann, in dem sie vollständig eben ist und auf diese Weise großflächig auf der Oberseite des Packgutstapels aufliegt. Ein konkaves Verbiegen der flexiblen Platte wird auf diese Weise sicher vermieden.According to a further embodiment, the plate is connected to a carrier plate arranged above it, which is flat on its underside, behaves rigidly and can be lowered by means of the lowering device in the direction of the pack stack. Such as two-part design of the plate is advantageous because the above arranged and flat on its underside support plate behaves rigidly, and therefore the plate arranged below can deform only to a state in which it is completely flat and in this way over a large area rests on the top of the packaged goods stack. A concave bending of the flexible plate is safely avoided in this way.

Vorzugsweise umfasst die Absenkeinrichtung einen Scherenheber, dessen unteres Ende an der Oberseite der Trägerplatte, und dessen oberes Ende an einem ortsfesten Rahmen der Verpackungsvorrichtung angelenkt ist. Bevorzugt wird ferner eine Ausgestaltung, bei der die Platte ausschließlich im Bereich zweier zueinander paralleler Ränder mit der Trägerplatte verbunden sind. In diesem Fall kann die Platte zumindest an einem der beiden zueinander parallelen Ränder in horizontaler Richtung beweglich mit der Trägerplatte verbunden sein. Dies ermöglicht einen Längenausgleich der verformbaren Platte in Bezug auf die sich überwiegend starr verhaltende Trägerplatte.Preferably, the lowering device comprises a scissor lift, the lower end of which is articulated on the upper side of the carrier plate, and whose upper end is articulated on a stationary frame of the packaging device. Furthermore, an embodiment is preferred in which the plate is connected to the carrier plate exclusively in the region of two mutually parallel edges. In this case, the plate can be movably connected to the carrier plate at least at one of the two mutually parallel edges in the horizontal direction. This allows a length compensation of the deformable plate with respect to the predominantly rigidly behaving support plate.

Eine weitere Ausgestaltung der Verpackungsvorrichtung zeichnet sich durch Luftdüsen aus, die im Bereich der Ränder der Platte und/oder der Trägerplatte angeordnet sind, und deren Strömungsaustritt nach innen unter die Platte gerichtet ist. Der Einsatz dieser Luftdüsen verbessert das Anlegen des überstehenden Randes des Deckblattes an die Seitenflächen des Packgutstapels, bevor dieser Rand anschließend mit Folie überzogen und auf diese Weise fixiert wird.Another embodiment of the packaging device is characterized by air nozzles, which are arranged in the region of the edges of the plate and / or the support plate, and whose flow outlet is directed inwardly under the plate. The use of these air nozzles improves the application of the protruding edge of the cover sheet on the side surfaces of the stack of packaged goods, before this edge is then coated with foil and fixed in this way.

Schließlich wird mit einer weiteren Ausgestaltung eine Platte aus gelochtem Blech vorgeschlagen. Eine solche Ausbildung der Platte erleichtert das Entweichen der Luft, die sich zwischen der Oberseite des Deckblatts und der Unterseite der Platte befindet. Zumindest ein Teil dieser Luft kann durch die genannten Löcher der Platte nach oben hin entweichen.Finally, a plate made of perforated sheet is proposed with a further embodiment. Such formation of the plate facilitates the escape of the air that is between the top of the topsheet and the bottom of the plate. At least part of this air can escape upwards through said holes of the plate.

Weitere Einzelheiten und Vorteile ergeben sich aus der nachfolgenden Beschreibung eines auf der Zeichnung dargestellten Ausführungsbeispieles. Im einzelnen zeigen:Further details and advantages will become apparent from the following description of an embodiment shown in the drawing. In detail show:

Figuren 1 bis 5: in verschiedenen Verfahrensstadien eine mit einer Wickelvorrichtung versehene Verpackungsmaschine zum Verpacken von Packgutstapeln.Figures 1 to 5: in different process stages provided with a winding device packaging machine for packing stacks of packaged goods.

Die Zeichnung zeigt in Seitenansicht eine Verpackungsmaschine für eine mit einem Stückgutstapel 1 beladene Palette 2. Das Verpacken des Stückgutes bzw. des Stückgutstapels erfolgt durch Umwickeln mit Verpackungsfolie, wozu an einem Rahmen 3 der Verpackungsmaschine ein Ring 4 angeordnet ist, an dem entlang ein Folienverteiler 5 um den Stapel 1 herum führbar ist. Der Ring 4 bildet hierbei den Stator einer Wickeleinrichtung. Weiterer Bestandteil der Wickeleinrichtung ist ein Wickelschlitten 4a, der entlang des Rings 4 verfahrbar ist, wozu der Schlitten zum Beispiel mit einem geeigneten Elektroantrieb versehen ist. An dem Schlitten 4a befindet sich der Folienverteiler 5, bestehend aus einer darin angeordneten Folienrolle sowie vorzugsweise mehreren Walzen, über die die von der Folienrolle abgezogene Verpackungsfolie geführt wird, wenn diese um den zu verpackenden Stückgutstapel 1 gewickelt wird. Vorzugsweise sind entweder der Schlitten 4a oder der Folienverteiler 5 in der Höhe, d.h. in Bezug auf die Wickelachse in axialer Richtung verlagerbar, um so den vertikalen Vortrieb während des Wickelprozesses zu erzielen. Zum Verpacken des Packgutes mit der Kunststofffolie bewegt sich daher der Schlitten 4a entlang des feststehenden Rings 4, so dass die vom Folienverteiler 5 abgegebene Kunststofffolie sich um die Seitenwände 6 des Packgutes wickelt. Mit der Wickelbewegung einher geht eine überlagerte Axialbewegung, in dem in der bereits beschriebenen Weise entweder der Schlitten 4a, der Folienverteiler 5 oder aber der in dem Rahmen 3 angeordnete Ring 4 abgesenkt oder angehoben wird. Auf diese Weise entsteht die in Figur 1 an dem Packgut 1 gut erkennbar, in etwa schraubenförmige Wicklung der Wickelfolie.The drawing shows a side view of a packaging machine for a loaded with a stack of goods 1 pallet 2. The packaging of the piece goods or the stack of packaged goods by wrapping with packaging film, including a ring 4 is arranged on a frame 3 of the packaging machine, along which a film distributor around the stack 1 is feasible. The ring 4 forms the stator of a winding device. Another component of the winding device is a winding slide 4a, which can be moved along the ring 4, for which purpose the slide is provided, for example, with a suitable electric drive. On the carriage 4a is the film distributor 5, consisting of a film roll arranged therein and preferably a plurality of rollers, over which the withdrawn from the film roll packaging film is guided when it is wrapped around the stackable piece 1 stack. Preferably, either the carriage 4a or the film distributor 5 is in height, i. movable with respect to the winding axis in the axial direction, so as to achieve the vertical propulsion during the winding process. For packaging the packaged goods with the plastic film, therefore, the carriage 4a moves along the fixed ring 4, so that the plastic film discharged from the film distributor 5 wraps around the side walls 6 of the packaged goods. The winding movement is accompanied by a superimposed axial movement in which either the carriage 4a, the film distributor 5 or the ring 4 arranged in the frame 3 is lowered or raised in the manner already described. In this way arises in Figure 1 on the packaged 1 well recognizable, approximately helical winding of the winding film.

Durch die beschriebene Wickeltechnik lassen sich nur die Seitenwände 6 des Stückgutstapels 1 mit Folie bedecken, nicht hingegen die flach und eben ausgebildete Oberseite 7 des Stückgutstapels 1. Um auch die Oberseite 7 abzudecken, wird dort im Zuge des Wickelprozesses ein Deckblatt 8 aufgelegt, vgl. hierzu Figur 2. Das Deckblatt 8 wird von einer an dem Rahmen 3 gelagerten Folienrolle 9 abgezogen und im Wesentlichen horizontal über die Oberseite 7 hinüber gezogen, wozu eigene technische Einrichtungen vorhanden sind. Die von der Folienrolle 9 abgezogene Deckblattfolie wird mittels geeigneter Schneideinrichtungen dann geschnitten, woraufhin ein vereinzeltes Deckblatt 8 entsteht, welches sich unter Schwerkraftwirkung auf der Oberseite 7 des Stückgutstapels 1 ablegt, vgl. hierzu Figur 2. Die Größe dieses Deckblattes 8 ist so bemessen, dass dieses allseitig mit einem Rand 8a über die Oberkante 12 des Stückgutstapels 1 vorsteht. Vorzugsweise ist die Breite sowie die Länge des Deckblatts 8 20 cm bis 40 cm größer, als die entsprechende Breite bzw. Länge der Oberseite 7 des Stückgutstapels 1. Nach dem Auflegen des Deckblattes 8 hängen dessen Ränder 8a ähnlich dem Rande eines Tischtuches herab, ohne dass sich die Ränder 8a bereits von selbst an die Seitenwände 6 des Stückgutstapels anlegen. Ursächlich hierfür ist die zu große Eigensteifigkeit des Folienmaterials, aus dem das Deckblatt 8 besteht.By means of the winding technique described, only the side walls 6 of the stack of unit goods 1 can be covered with film, but not the flat and flat upper side 7 of the stack of articles 1. In order to cover the upper side 7 as well, a cover sheet 8 is placed there during the winding process, cf. For this figure 2, the cover sheet 8 is subtracted from a mounted on the frame 3 film roll 9 and pulled substantially horizontally over the top 7 over, including their own technical facilities are available. The peeled off from the film roll 9 cover sheet is by means of suitable Cut devices then cut, whereupon a scattered cover sheet 8 is formed, which deposits under gravity on the top 7 of the stack of articles 1, see. 2). The size of this cover sheet 8 is dimensioned such that it protrudes on all sides with an edge 8a over the upper edge 12 of the stack of articles 1. Preferably, the width and the length of the cover sheet 8 20 cm to 40 cm larger than the corresponding width or length of the top 7 of the stack of lumps 1. After placing the cover sheet 8 whose edges 8a hang down similar to the edge of a tablecloth, without the edges 8a already create itself on the side walls 6 of the cargo stack. The reason for this is the excessive rigidity of the film material from which the cover sheet 8 is made.

In dem Rahmen 3 befindet sich über dem Stückgutstapel 1 eine Einrichtung zum Herausquetschen jener Luft, die sich nach dem Auflegen des Deckblattes 8 in dem Hohlraum 13 zwischen dessen Unterseite und der Oberseite 7 des Stückgutstapels befindet. Diese Einrichtung besteht aus einer verformbaren Platte 15, einer sich im wesentlichen starr verhaltenden Trägerplatte 16 oberhalb der Platte 15 sowie einer Hub- bzw. Senkeinrichtung 17. Die Hub- bzw. Senkeinrichtung 17 ist beim dargestellten Ausführungsbeispiel ein motorisch angetriebener Scherenheber, mit dessen Hilfe sich die Trägerplatte 16 absenken und wieder anheben lässt.In the frame 3 is located above the stack of pieces 1, a device for squeezing that air, which is located after placing the cover sheet 8 in the cavity 13 between the bottom and the top 7 of the stack of articles. This device consists of a deformable plate 15, a substantially rigidly behaving support plate 16 above the plate 15 and a lifting or lowering device 17. The lifting or lowering device 17 is in the illustrated embodiment, a motor-driven scissor lifter, with the help itself lower the carrier plate 16 and raise it again.

Die Platte 15 ist an der Unterseite der Trägerplatte 16 angeordnet und besteht beim Ausführungsbeispiel aus einem Lochblech. Die Platte 15 ist relativ dünnwandig, weshalb sie sich in Folge ihres Eigengewichtes in der in den Figuren 1 und 2 dargestellten Weise nach unten durchbiegt. Lediglich im Bereich der beiden zueinander parallelen Ränder 20 der Trägerplatte 16 ist die Platte 15 mit der Trägerplatte verbunden, weshalb sich die Platte 15 auf ihrer dazwischen angeordneten Länge frei durchbiegen kann. Die Verbindung zwischen Platte 15 und Trägerplatte 16 ist im Bereich der Ränder 20 auch nicht starr, sondern in horizontaler Richtung beweglich. Auf diese Weise kann sich die gelochte Platte 15, sobald ihre Biegung in eine Streckung überführt wird, relativ zu der Trägerplatte 16 ungehindert ausdehnen.The plate 15 is arranged on the underside of the carrier plate 16 and consists in the embodiment of a perforated plate. The plate 15 is relatively thin-walled, which is why it bends down as a result of its own weight in the manner shown in Figures 1 and 2. Only in the region of the two mutually parallel edges 20 of the support plate 16, the plate 15 is connected to the support plate, which is why the plate 15 can bend freely on its interposed length. The connection between plate 15 and support plate 16 is not rigid in the region of the edges 20, but movable in the horizontal direction. In this way, the perforated plate 15, as soon as its bending is transferred to a stretch, relative to the support plate 16 can expand unhindered.

Wird mittels der Hub- bzw. Senkeinrichtung 17 die Trägerplatte 16 abgesenkt, so gerät die Platte 15 zunächst nur im Bereich ihrer stärksten Durchbiegung, welcher Teilbereich in Figur 3 mit dem Bezugszeichen T versehen ist, in Kontakt mit dem Deckblatt 8. Erst im Verlauf der weiteren Absenkung der Trägerplatte 16 legen sich dann auch alle anderen Bereiche der Platte 15 an das Deckblatt 8 an, was in Figur 4 dargestellt ist. Auf diese Weise wird die zwischen der Oberseite 7 des Stückgutstapels 1 und dem Deckblatt 8 angesammelte Restluft von innen nach außen herausgequetscht, bevor sie im Bereich der Oberkanten 12 entweicht. Nachdem sich die Trägerplatte 16 mit der Platte 15 vollständig abgesenkt hat, liegt die Platte 15 bündig und eben auf der Oberseite des Stückgutstapels auf, nennenswerte Luftblasen oder Luftnester sind zwischen dieser Oberseite und dem Deckblatt 8 nicht mehr vorhanden. Hierzu ist es erforderlich, dass die Platte 15 in abgesenktem Zustand allseitig mindestens bis zu der Oberkante 12 des Packgutstapels reicht. Vorzugsweise ist die Platte 15 im Bereich ihrer Ränder ca. 5 bis 10 cm größer, als die Oberseite 7 des Packgutstapels 1.If the support plate 16 is lowered by means of the lifting or lowering device 17, then the plate 15 initially only in the region of its strongest deflection, which portion is provided in Figure 3 by the reference T, in contact with the cover sheet 8. Only in the course of further lowering of the support plate 16 then put all other areas of the plate 15 to the cover sheet 8, which is shown in Figure 4. In this way, the between the top 7 of the cargo stack 1 and the cover sheet 8 accumulated residual air squeezed from the inside out before it escapes in the region of the upper edges 12. After the support plate 16 has completely lowered with the plate 15, the plate 15 is flush and just on top of the cargo stack, significant air bubbles or air pockets are no longer present between this top and the cover sheet 8. For this purpose, it is necessary that the plate 15 extends in a lowered state on all sides at least up to the top edge 12 of the packaged goods. Preferably, the plate 15 in the region of its edges about 5 to 10 cm larger than the top 7 of the stack of packs. 1

Das voranstehend beschriebene Absenken der Platte 15 und damit das Herausquetschen der Luft aus dem Hohlraum 13 unter dem Deckblatt 8 erfolgt vorzugsweise zu einem Zeitpunkt (Fig. 4), zu dem der Wickelprozess für die Seitenwände 6 des Packgutstapels 1 noch nicht abgeschlossen ist, und zu dem vor allem die oberen Wicklungen noch fehlen.The above-described lowering of the plate 15 and thus the squeezing out of the air from the cavity 13 under the cover sheet 8 is preferably carried out at a time (Fig. 4), to which the winding process for the side walls 6 of the packaged goods 1 is not yet completed, and especially the upper windings are missing.

Nachdem in der beschriebenen Weise die Platte 15 abgesenkt wurde und die Luft unter dem Deckblatt 8 entweichen konnte, werden sodann die letzten Wicklungen im oberen Teil des Stückgutstapels 1 durchgeführt, wobei der nach unten herabhängende Rand 8a des Deckblatts 8 mit eingewickelt wird. Damit das freie Herabhängen des Randes 8a nicht von jenem Folienabschnitt 21 der Wickelfolie behindert wird, welcher zwar bereits vom Folienverteiler 5 abgegeben, jedoch noch nicht an die Seitenfläche 6 angelegt wurde, wird dieser Folienabschnitt zuvor künstlich gereckt, wodurch sich seine Folienbreite B verringert. In den Fign. 1 bis 4 ist dies dargestellt. Zum Recken des Folienabschnitts 21 wird mittels des Folienverteilers 5 eine erhöhte Zugspannung auf den Folienabschnitt ausgeübt. Durch das Recken wird die Folie schmaler und behindert an dem Ort "P" kaum noch das Herabhängen des Randes 8a des Deckblatts. Anschließend wird der Wickelprozeß fortgesetzt, wobei der Rand 8a mit eingewickelt wird.After having been lowered in the manner described, the plate 15 and the air could escape under the cover sheet 8, then the last windings are carried out in the upper part of the piece goods stack 1, wherein the downwardly depending edge 8a of the cover sheet 8 is wrapped with. So that the free hanging of the edge 8a is not hindered by that film section 21 of the winding film, which is already discharged from the film distributor 5, but not yet applied to the side surface 6, this film section is previously artificially stretched, thereby reducing its film width B. In the Fign. 1 to 4 this is shown. For stretching the film section 21, an increased tensile stress is exerted on the film section by means of the film distributor 5. By stretching the film is narrower and hindered at the location "P" barely the hanging down of the edge 8 a of the cover sheet. Subsequently, the winding process is continued, wherein the edge 8a is wrapped with.

Um ferner zu erreichen, dass sich der vorstehende Rand 8a des Deckblatts 8 vor dessen Einwickeln gut an die Seitenwände 6 des Stückgutstapels anlegt, sind an der Platte 15 oder der Trägerplatte 16 Luftdüsen 22 angeordnet. Die Strömungsaustritte der Luftdüsen 22 sind nach innen unter die Platte 15 gerichtet, wodurch ein Luftstrom erzeugt wird, welcher den überstehenden Rand des Deckblatts 8 solange gegen die betreffenden Seitenwände 6 des Stückgutstapels 1 drückt, bis die letzte Wicklung oder die letzen Wicklungen erfolgt sind und auf diese Weise die Ränder 8a des Deckblattes abgedeckt und an den Seitenwänden fixiert sind, wie dies Figur 5 zeigt.To further achieve that the protruding edge 8a of the cover sheet 8 rests well before wrapping it on the side walls 6 of the stack of articles, 16 air nozzles 22 are arranged on the plate 15 or the support plate. The flow outlets of the air nozzles 22 are directed inwardly below the plate 15, whereby an air flow is generated, which presses the protruding edge of the cover sheet 8 against the respective side walls 6 of the stack of pieces 1 until the last winding or the last windings are done and on this way the edges 8a of the cover sheet are covered and fixed to the side walls, as shown in FIG.

Sobald diese letzen Wicklungen fertiggestellt sind, können die Luftdüsen 22 wieder abgeschaltet werden, ferner werden Platte 15 und Trägerplatte 16 wieder in ihre obere Ruheposition angehoben.Once these last windings are completed, the air nozzles 22 can be switched off again, also plate 15 and support plate 16 are raised back to its upper rest position.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Stückgutstapelstack of packaged goods
22
Palettepalette
33
Rahmenframe
44
Ringring
4a4a
Schlittencarriage
55
Folienverteilerfilm distribution
66
SeitenwandSide wall
77
Oberseitetop
88th
Deckblattcover sheet
8a8a
Randedge
99
Folienrollefilm roll
1212
Oberkantetop edge
1313
Hohlraumcavity
1515
Platteplate
1616
Trägerplattesupport plate
1717
Hub- bzw. SenkeinrichtungLifting or lowering device
1818
Transportebenetransport plane
2020
Randedge
2121
Folienabschnittfilm section
2222
Luftdüseair nozzle
BB
Breite der WickelfolieWidth of the wrapping film
PP
Ortplace
TT
Teilbereichsubregion

Claims (10)

  1. Method for the packaging of a packageable goods stack having a flat top side and side walls, in which a cover sheet laid onto the top side and projecting with its margin on all sides beyond the top edge of the packageable goods stack is covered with packaging film during the provision of the side walls of the packageable goods stack with the latter and is fixed to the side walls, an essentially horizontal sheet-like element being lowerable onto the packageable goods stack (1) until it comes to bear on the top side (7) of the latter and, in this lowered state, extending on all sides at least as far as the top edge (12) of the packageable goods stack, characterized in that the sheet-like element is a deformable plate (15), in that the lowering of the plate (15) is carried out only after the cover sheet (8) is laid on and before the margin (8a) of the latter is fixed by means of the packaging film, in that, at the start of lowering, the plate (15) initially comes only with one part (T) of its total area into contact with the top side (7) of the packageable goods stack, and in that, only during the further lowering of the plate (15), the remaining regions of the plate (15) also come into contact with the top side (7).
  2. Method according to Claim 1, characterized in that the first contact of the plate (15) with the top side (7) takes place on the middle either of the length or of the width of the top side (7).
  3. Method according to Claim 1 or Claim 2, characterized in that, during lowering, the plate (15) is deformed from a bent or curved configuration to a flat configuration as a result of contact with the top side of the packageable goods stack.
  4. Method according to one of Claims 1 to 3, characterized in that, after the lowering of the plate (15), an airflow directed onto the margin (8a), projecting over the top edge (12) of the packageable goods stack, of the cover sheet (8) and laying the said margin against the respective side wall (6) is generated, and in that this airflow is maintained for the duration of the fixing of the margin.
  5. Method according to one of the preceding claims, characterized in that the covering of the side walls (6) with a film wound around the packageable goods stack takes place, in that the winding process is interrupted before the cover sheet (8) is laid on, and in that a winding-film portion (21) not yet applied to the respective side wall (6) at the time of interruption is elongated in order to reduce its film width (B).
  6. Method according to one of the preceding claims, characterized in that lowering takes place with the aid of a scissor-type lifter, the lower end of which is articulated on the top side of the carrier plate (16) and the upper end of which is articulated on a fixed frame (3) of the packaging device.
  7. Method according to one of the preceding claims, characterized in that the plate (15) is connected to the carrier plate (16) solely in the region of two margins (20) parallel to one another.
  8. Method according to Claim 7, characterized in that the plate (15) is connected movably in the horizontal direction to the carrier plate (16) at least at one of the two margins (20) parallel to one another.
  9. Method according to one of the preceding claims, characterized by air nozzles (22) which are arranged in the region of the margins of the plate (15) and/or of the carrier plate (16) and the flow outlet of which is directed inwards under the plate (15).
  10. Method according to one of the preceding claims, characterized in that, in order to cover the side walls (6), film is dispensed from a film distributor (5) capable of being led around the packageable goods stack, and in that the film distributor (5) is provided with means for increasing the tensile stress on the dispensed film, in order at the same time to elongate the film and thereby to contract its film width (B).
EP03001491A 2002-03-23 2003-01-23 Method and apparatus for packaging a stack of articles Expired - Lifetime EP1350720B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10213143 2002-03-23
DE10213143A DE10213143A1 (en) 2002-03-23 2002-03-23 Procedure for packing of stack of packed goods having flat top side and sidewalls entails lowering of horizontal plate onto stack until resting upon top side so that when lowered the plate on all sides reaches at least upper edge of stack

Publications (2)

Publication Number Publication Date
EP1350720A1 EP1350720A1 (en) 2003-10-08
EP1350720B1 true EP1350720B1 (en) 2006-08-23

Family

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Application Number Title Priority Date Filing Date
EP03001491A Expired - Lifetime EP1350720B1 (en) 2002-03-23 2003-01-23 Method and apparatus for packaging a stack of articles

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EP (1) EP1350720B1 (en)
AT (1) ATE337224T1 (en)
DE (2) DE10213143A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITRN20070029A1 (en) * 2007-06-01 2007-08-31 Mecwrap Srl GRAVITY PRESSURE FOR PALLET WINDING MACHINES

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2096090A (en) * 1981-04-07 1982-10-13 Reed International Ltd Handling bulky goods or materials
NL8502816A (en) * 1985-05-03 1986-12-01 Groot R Holding Laag Zuthem Bv Item stack packing machine - places sheet on top with edges hanging down before wrapping in flexible strip
FI80418C (en) * 1988-04-06 1990-06-11 Haloila M Oy Ab ANORDINATION OF FOERFARANDE FOR EXAMINATION AV EN OMSLAGSFILM VID INVECKLING.
US5048261A (en) * 1989-09-14 1991-09-17 Lantech, Inc. Top sheet dispenser for a stretch wrapping apparatus
US5299906A (en) * 1991-05-03 1994-04-05 Stone Robert M Self-adjusting pneumatic load elevator
US5819503A (en) * 1997-06-11 1998-10-13 Lantech, Inc. Method and apparatus for wrapping a load including a waterproof top sheet
FI991020A0 (en) * 1999-05-04 1999-05-04 United Packaging Plc Wrapping procedure and wrapping machine
DE19958292B4 (en) * 1999-12-03 2004-08-19 Erapa-Lenzen Gmbh & Co.Kg Packaging machine for wrapping packaged goods with a film pulled off a film roll
FI111530B (en) * 2000-04-11 2003-08-15 Octomeca Oy Method and apparatus for wrapping a package in a wrapping film in a wrapping machine

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Publication number Publication date
DE50304703D1 (en) 2006-10-05
ATE337224T1 (en) 2006-09-15
DE10213143A1 (en) 2003-10-02
EP1350720A1 (en) 2003-10-08

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