EP0764579B1 - Procédé et dispositif d'emballage d'objets dans une feuille tubulaire en matière plastique rétractable - Google Patents

Procédé et dispositif d'emballage d'objets dans une feuille tubulaire en matière plastique rétractable Download PDF

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Publication number
EP0764579B1
EP0764579B1 EP96114495A EP96114495A EP0764579B1 EP 0764579 B1 EP0764579 B1 EP 0764579B1 EP 96114495 A EP96114495 A EP 96114495A EP 96114495 A EP96114495 A EP 96114495A EP 0764579 B1 EP0764579 B1 EP 0764579B1
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EP
European Patent Office
Prior art keywords
film
pallet
stack
welds
products
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
EP96114495A
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German (de)
English (en)
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EP0764579B2 (fr
EP0764579A1 (fr
Inventor
Kurt Lachenmeier
Flemming Thomsen
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.)
Signode Denmark ApS
Original Assignee
Kurt Lachenmeier AS
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Application filed by Kurt Lachenmeier AS filed Critical Kurt Lachenmeier AS
Publication of EP0764579A1 publication Critical patent/EP0764579A1/fr
Application granted granted Critical
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Publication of EP0764579B2 publication Critical patent/EP0764579B2/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/13—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the preformed tubular webs being supplied in a flattened state
    • B65B9/135—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the preformed tubular webs being supplied in a flattened state for palletised loads

Definitions

  • the invention relates to a method and an apparatus for Pack items with a tubular Plastic film. Such methods and devices are mostly used for packing stacked goods that are located on a pallet.
  • the packaging can on the one hand provide protection against damage and on the other hand prevent the stack of goods from moving.
  • DE 37 07 877 describes a method and a device shown for packing items, with or with the stretched the film in the cold state and then over the stack of goods is pulled.
  • the tubular film is placed over a console fed to a frame and opened via suction devices.
  • Grippers are inserted into the slightly opened film allow a restriction of finger elements via the the film is then stretched and over in the vertical direction the stack of goods is drawn.
  • a disadvantage of the described The device and the method is that the film is horizontal and stretched vertically around the stack of goods, but no means are provided for vertical expansion of the Maintain slide. This can be caused by shocks and vibrations cause horizontal folds to form on the film and the stack of goods in spite of the supporting film wrapping itself, it can shift and tilt. This is particularly extreme in the case of bulk cargoes filled in bags problematic.
  • Document DE-43 27 450 C1 shows a method and an apparatus for Covering a stretch film hood over a stack of goods in which the film hood after covering the stack in the vertical direction is stretched and the edges of the film by fixing elements, for example an adhesive, welding or stapling device to be fixed under the stack.
  • fixing elements for example an adhesive, welding or stapling device to be fixed under the stack.
  • Document DE-U-91 04 072 discloses a device for covering Stretch film hoods over a stack of goods, with the inside of the lower one Edge of the stretch film hood after covering the stack of goods by means of an adhesive spray device is sprayed with adhesive and then pressed against the bottom of the pallet and attached to it.
  • Document DE-U-90 13 049 shows a device for securing the lower one Edge of stretch films drawn over palletized material stacks, in which the edge of the covered stretch film hood folded over under the pallet is heated by means of heating discs with heating tapes, so that the film material is warmed and softened and a connection with the pallet material received.
  • the present invention is therefore based on the object of a method and a device for packaging objects with a tubular To create plastic film, in which the packaged item through the film supported safely and easily for a long time with little effort becomes.
  • the film hood is stretched horizontally and vertically in elastic Area is applied to the object and then through this stretch the provision of constriction welds is maintained increases the stability of the item, especially if it is the item is a pallet with a stack of goods.
  • a vertical Displacement of the film hood which is easily caused by shocks or vibrations can be avoided, it is avoided that the film in vertical Direction can span again and it will slip the stack of goods counteracted.
  • the narrowing welds increase the adhesion of the film hood is reached on the packaged goods and / or the pallet.
  • the heightened Expansion forces due to the reduced opening circumference in the area of the narrowing welds cause better adhesion of the film to the pallet, whereby the stack of goods is not damaged by the increased tensile forces.
  • the film hood is attached to the Pallet created that conveyors do not grasp in through the film hood the elongated recesses of the pallet are prevented. It is special important for transportation in automatically operated high-bay warehouses.
  • the device according to the invention is in spite of little additional effort Additional devices can be used more flexibly than conventional packaging machines.
  • the device according to the invention can perform the tasks of a Shrink wrapping machine take over, but without such a high energy consumption exhibit.
  • a tubular film is shown on its side edges each has a fold, so that in the slightly open state in cross section the corners of the tubular film taper at an acute angle.
  • the tubular film will unwound from a tape and at a certain point with a continuous Provided weld 1, above which a separator 2 is provided where the tubular film is cut off, so that the cut off part has a hood shape and can be put over an object.
  • a separator 2 is provided in the lower area of this film hood 4 there are constriction welds 3 the four corners of the film hood 4 are provided. These narrowing welds 3 cause the film hood 4 at this point after stretching Relaxing to a lesser extent.
  • narrowing welds 3 are different exemplary embodiments for narrowing welds 3, the number and direction of the Welds vary. It is also possible to limit the number of welds 3 vary at the four corners or the position and number the narrowing welds 3 on the film hood 4 itself to change. So can, for example, additional constriction welds in the area of Stack to be arranged to fix the film in several sections and a relaxation in the vertical direction due to the increased adhesion to the To prevent objects in the area of the constriction welds.
  • a film hood 4 according to the invention is shown, in its lower Area at four corners has narrowing welds 3, which accordingly 2a are.
  • the narrowing welds 3 are not shown Welders attached.
  • the film hood 4 is on a good stack 5 a pallet 6 pulled over, the film end 7 slightly below the Pallet is located.
  • the narrowing welds 3 shown in FIGS. 1-3 can produced simultaneously, before or after the production of the weld seam 1 become. Irrespective of this, the film hood 4 is pulled over the cover Object stretched across the horizontal circumference of the object, the Foil hood 4 also when lying against the object in the horizontal direction is stretched.
  • the horizontal expansion of the film hood when it is in place is between 10% - 30%.
  • the film hood 4 is pulled over an object and thereby in vertical Direction stretched, the vertical Restoring forces counteracted due to the adhesive effect of the narrowing welds 3 becomes.
  • the vertical expansion of the film hood is preferably 5% - 25%.
  • the film hood 4 is on a good stack 5 a pallet 6 covered, the narrowing welds in the area of Foil end 7 are arranged so that the narrowing welds by the 3rd resulting folding edges are directed into the pallet and are located where a conveyor usually attacks on the pallet 6.
  • the narrowing welds 3 are here only after covering the film hood 4 manufactured on the stack of goods 5 and the pallet 6.
  • the film hood 4 gripped in its lower area by grippers, not shown, on which Corresponding welding devices are arranged, and the narrowing welds 3 are according to the desired voltage state shrink wrapped.
  • the constriction welds which are applied at right angles to the end of the film 7 3 ensure a particularly stable hold of the film hood 4th
  • the lower one Attach the area of the film hood 4 to the pallet 6.
  • the film hood 4 After covering the film hood 4 over the Good stack 5 and the pallet on the broad side of the pallet 6 Bracket 11 pressed against the pallet 6, which is a retraction the foil hood, which is under tension in the vertical direction 4 prevent. Then the bottom section the film hood 4 is subjected to heat or hot air 10, what a shrinking of the film in the lower area of the film hood 4 causes and a close concern of this area leads to the pallet 6. After the shrinking process, the Counterholder 11 can be removed again because of the on the pallet 6 adjacent area due to the increased adhesion maintaining the vertical tension guaranteed in the film hood 4.
  • the heat or Hot air is provided by heating devices arranged on a frame generated.
  • FIG. 6 is another embodiment shown. After the film hood 4 over the stack 5 and the pallet 6 has been pulled over, the area at the end of the film 7 by means of a bracket 9 and a stitching machine 12 applied to the inside of the outer blocks 14 of the pallet 6.
  • the film hood 4 is either with the stapling machine 12 clamped, the clamps 13 in the outer blocks 14th or the bottom of the pallet, or the area of the film end 7 with devices provided on the bracket 9 under the action of heat on the outer blocks 14 of the pallet 6 stapled. It is also possible not to apply the film hood 4 the outer blocks 14, but to stick to the bottom board 16.
  • the lower area of the film hood 4 is shown in FIG Guide strips 17 placed around the two outer blocks 14.
  • Fig. 8 it is shown how the film hood 4 only over the stack of goods 5 and the upper edge of the pallet 6 coated is.
  • the height to which the film end 7 is pulled down is determined by the ironing bars 19, from the bottom the pallet 6 is pressed between the outer blocks 14 are.
  • the lower area of the film hood 4 is folded and forms a film strip 20, either by means of self-locking counteracts the restoring forces or according to one of the above described types is attached to the pallet 6.

Landscapes

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

Claims (13)

  1. Procédé d'emballage d'objets avec un film tubulaire en matière plastique extensible, dans lequel :
    on soude le film en matière plastique pour former une calotte en film (4) avec un cordon de soudure continu (1),
    on tire la calotte en film (4) par-dessus l'objet (5, 6), la calotte en film étant allongée en direction horizontale et en direction verticale,
    caractérisé en ce que l'on réalise des soudures de rétrécissement (3) pour maintenir l'allongement vertical sur le film pour la calotte en film (4) soit simultanément avec le cordon de soudure (1), soit auparavant soit encore après.
  2. Procédé selon la revendication 1, dans lequel les objets à emballer sont constitués chacun par un empilement d'articles (5) et par une palette (6), caractérisé en ce que les soudures de rétrécissement (3) sont prévues dans la zone inférieure de la calotte en film (4), ladite zone s'appuyant contre la palette (6).
  3. Procédé selon la revendication 2, caractérisé en ce que l'on prévoit dans le film, au niveau de l'empilement d'articles (5), des soudures de rétrécissement supplémentaires.
  4. Procédé selon l'une ou l'autre des revendications 2 et 3, caractérisé en ce que l'on réalise les soudures de rétrécissement (3) aux quatre coins de l'empilement d'articles (5) ou de la palette (6), et on les met en forme oblongue.
  5. Procédé selon l'une quelconque des revendications 1 à 4, dans lequel les objets à emballer sont constitués chacun par un empilement d'articles (5) et par une palette (6), caractérisé en ce qu'après tirage par-dessus l'objet (5, 6), la calotte en film (4) est maintenue en supplément par des éléments de maintien antagonistes (11) sur la palette (6) et est rétractée au niveau de la palette (6) par action thermique ou par air chaud.
  6. Procédé selon l'une quelconque des revendications 1 à 4, dans lequel les objets à emballer sont constitués chacun par un empilement d'articles (5) et par une palette (6), caractérisé en ce qu'après tirage par-dessus l'objet (5, 6), on rabat la zone inférieure de la calotte en film (4) en supplément autour des cales extérieures extrêmes (14) de la palette (6), et on fixe le film rabattu, au moyen de pinces (13), d'agrafages à chaud ou des rubans (18), sur les cales extérieures (14) de la palette (6).
  7. Procédé selon l'une quelconque des revendications 1 à 4, dans lequel les objets à emballer sont constitués chacun par un empilement d'articles (5) et par une palette (6), caractérisé en ce que l'on tire la calotte en film (4) sur l'empilement d'articles (5) et jusqu'au-dessus de l'arête inférieure (h) de la palette (6), et en ce que l'on pose la zone inférieure de la calotte en film (4) dans l'état plié contre la palette (6).
  8. Appareil pour emballer des objets, pour mettre en oeuvre le procédé selon l'une quelconque des revendications 1 à 7, comportant un cadre dont la section libre est supérieure à la section maximale de l'objet à emballer, un dispositif d'amenée pour amener un film tubulaire en matière plastique depuis un rouleau de réserve jusqu'au cadre, et des moyens pour saisir et allonger le film en matière plastique en direction horizontale et en direction verticale, caractérisé en ce que l'appareil comprend des moyens avec lesquels on peut réaliser des soudures de rétrécissement pour l'adhésion du film contre l'objet à l'encontre d'un déplacement vertical.
  9. Appareil selon la revendication 8, caractérisé en ce que les moyens comprennent des appareils à souder des films, au moyen desquelles on peut réaliser les soudures de rétrécissement (3) sur le film de la calotte en film (4).
  10. Appareil selon la revendication 8, caractérisé en ce que les moyens peuvent comprendre en supplément des éléments de maintien antagonistes (11) qui peuvent retenir le film sur l'objet, ainsi qu'en outre des dispositifs pour produire de la chaleur.
  11. Appareil selon la revendication 10, caractérisé en ce que les dispositifs pour produire de la chaleur sont des éléments chauffants agencés sur le cadre.
  12. Appareil selon la revendication 8, dans lequel l'objet est un empilement d'articles (5) avec une palette (6), caractérisé en ce qu'il est prévu en supplément des dispositifs pour rabattre le film autour de la palette (6), ainsi que des appareils d'agrafage, des appareils à souder des films ou des appareils de ficelage, au moyen desquels la zone inférieure de la calotte en film (4) peut être fixée sur la palette (6).
  13. Appareil selon la revendication 8, caractérisé en ce qu'il est prévu une baguette en forme d'étrier (19) au moyen de laquelle la hauteur d'emballage est réglable.
EP96114495A 1995-09-19 1996-09-10 Procédé et dispositif d'emballage d'objets dans une feuille tubulaire en matière plastique rétractable Expired - Lifetime EP0764579B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19534743A DE19534743A1 (de) 1995-09-19 1995-09-19 Verfahren und Vorrichtung zum Verpacken von Gegenständen mit einer dehnbaren schlauchförmigen Kunststoffolie
DE19534743 1995-09-19

Publications (3)

Publication Number Publication Date
EP0764579A1 EP0764579A1 (fr) 1997-03-26
EP0764579B1 true EP0764579B1 (fr) 2002-06-05
EP0764579B2 EP0764579B2 (fr) 2006-05-31

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ID=7772577

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Application Number Title Priority Date Filing Date
EP96114495A Expired - Lifetime EP0764579B2 (fr) 1995-09-19 1996-09-10 Procédé et dispositif d'emballage d'objets dans une feuille tubulaire en matière plastique rétractable

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EP (1) EP0764579B2 (fr)
DE (2) DE19534743A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1851131B1 (fr) 2005-01-20 2014-04-30 Saint-Gobain Isover Unite de transport de panneaux
DE102016212436B4 (de) 2016-07-07 2018-07-26 Signode Industrial Group Llc Verpackungsverfahren und Haubenstretchanlage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3707877A1 (de) * 1987-03-11 1988-09-22 Lachenmeier Kurt Aps Verfahren und vorrichtung zum verpacken von gegenstaenden mit einer bahnfoermigen kunststoffolie
DE3941139A1 (de) * 1989-12-13 1991-06-20 Moellers Maschf Gmbh Verfahren zur herstellung einer palettenlosen verpackungseinheit
DE4103384A1 (de) * 1990-02-06 1991-08-08 Hannen Reiner Develog Vorrichtung zum ueberziehen von stretchfolienhauben ueber einen gutstapel

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9013049U1 (fr) * 1990-09-13 1990-12-06 Develog, Reiner Hannen & Cie, Courtelary, Ch
DE9104072U1 (fr) * 1991-04-04 1991-06-20 Develog, Reiner Hannen & Cie, Courtelary, Ch
DE4327450C1 (de) * 1993-08-14 1995-01-05 Moellers Maschf Gmbh Verfahren und Vorrichtung zum Überziehen einer Stretchfolienhaube über einen Gutstapel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3707877A1 (de) * 1987-03-11 1988-09-22 Lachenmeier Kurt Aps Verfahren und vorrichtung zum verpacken von gegenstaenden mit einer bahnfoermigen kunststoffolie
DE3941139A1 (de) * 1989-12-13 1991-06-20 Moellers Maschf Gmbh Verfahren zur herstellung einer palettenlosen verpackungseinheit
DE4103384A1 (de) * 1990-02-06 1991-08-08 Hannen Reiner Develog Vorrichtung zum ueberziehen von stretchfolienhauben ueber einen gutstapel

Also Published As

Publication number Publication date
EP0764579B2 (fr) 2006-05-31
EP0764579A1 (fr) 1997-03-26
DE19534743A1 (de) 1997-03-20
DE59609288D1 (de) 2002-07-11

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