EP0579858A1 - Procédé et dispositif pour l'emballage de marchandises empilées - Google Patents

Procédé et dispositif pour l'emballage de marchandises empilées Download PDF

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Publication number
EP0579858A1
EP0579858A1 EP92112655A EP92112655A EP0579858A1 EP 0579858 A1 EP0579858 A1 EP 0579858A1 EP 92112655 A EP92112655 A EP 92112655A EP 92112655 A EP92112655 A EP 92112655A EP 0579858 A1 EP0579858 A1 EP 0579858A1
Authority
EP
European Patent Office
Prior art keywords
hood
film
goods
valve opening
opening
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.)
Granted
Application number
EP92112655A
Other languages
German (de)
English (en)
Other versions
EP0579858B1 (fr
Inventor
Knut Grefrath
Heinz Berns
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.)
ERAPA-CEKA MASCHINENBAU UND -HANDEL GMBH
Original Assignee
ERAPA-CEKA Maschinenbau und -handel GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ERAPA-CEKA Maschinenbau und -handel GmbH filed Critical ERAPA-CEKA Maschinenbau und -handel GmbH
Priority to DE59208586T priority Critical patent/DE59208586D1/de
Priority to AT92112655T priority patent/ATE153940T1/de
Priority to EP92112655A priority patent/EP0579858B1/fr
Publication of EP0579858A1 publication Critical patent/EP0579858A1/fr
Application granted granted Critical
Publication of EP0579858B1 publication Critical patent/EP0579858B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D71/00Bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans or pop bottles; Bales of material
    • B65D71/0088Palletisable loads, i.e. loads intended to be transported by means of a fork-lift truck
    • B65D71/0092Palletisable loads, i.e. loads intended to be transported by means of a fork-lift truck provided with one or more rigid supports, at least one dimension of the supports corresponding to a dimension of the load, e.g. skids
    • B65D71/0096Palletisable loads, i.e. loads intended to be transported by means of a fork-lift truck provided with one or more rigid supports, at least one dimension of the supports corresponding to a dimension of the load, e.g. skids the dimensions of the supports corresponding to the periphery of the load, e.g. pallets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00Enclosing 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
    • B65B9/10Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/13Enclosing 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
    • B65B9/135Enclosing 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2571/00Bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans, pop bottles; Bales of material
    • B65D2571/00006Palletisable loads, i.e. loads intended to be transported by means of a fork-lift truck
    • B65D2571/00012Bundles surrounded by a film
    • B65D2571/00018Bundles surrounded by a film under tension
    • B65D2571/00024Mechanical characteristics of the shrink film

Definitions

  • the invention relates to a method according to the preamble of claim 1 for packaging goods, in particular stacked on a pallet, which are covered with a hood made of shrinkable film tube and are held by the latter by shrinking. Furthermore, the invention relates to a film hood for carrying out the method and, according to the preamble of claim 11, to a device for carrying out this method.
  • the gas volume is essentially exchanged with the environment, with very different purposes being sought.
  • the gas volume to be exchanged is of a different state and / or of a different composition. Other conditions can be given by the temperature and pressure.
  • An upper pressure is often sought to prevent the film hood from being damaged on the edges of the stacked goods.
  • the effect is a balloon-like inflated film hood, the static pressure of which is generated in particular by blowers.
  • it can be achieved by means of a negative pressure in relation to the environment that the film hood already implements the stacked goods before the shrinking process begins. In this way, more uniform shrinkage is often achieved.
  • the temperature of the gas to be exchanged is also important, for example in the packaging of ice cream or fats, which should be protected as far as possible from contact with higher temperatures. In this case, cooled gas is advantageously kept ready for the process. On the other hand, due to the manufacturing process, there is sometimes still heating up of the piece goods, for example when drying them.
  • pressure changes can also be initiated in good time, the goal again being to influence the static values in the final state and to maintain the state of the static default value to a greater or lesser extent.
  • the gas composition is a variable that is often variable when a gas exchange is to be carried out.
  • the surrounding gas In particular in tunnels through which the stacks prepared for shrinkage are passed in heated gas, the surrounding gas generally has much higher concentrations of exhaust gases than when the admission is carried out outdoors. Changes in the gas composition can also play a role for manufacturing reasons, for example if oxidation protection is to be ensured or if the packaging has to take place under protective gas. In this case, it is particularly important to seal the packaging film tightly so that an unintentional change in the gas composition can no longer occur.
  • the invention is based on a prior art, as described in detail in US-PS 38 07 126.
  • the pallet is prepared on a chain conveyor in such a way that the edge of the film hangs freely on the hood that has been pulled open so that it can then be knocked in, which is why it is lifted, shrinking, and, by lowering it onto the chain conveyor, it lies firmly on the bottom of the pallet, so that the shrinking process cannot be disrupted by pushing up the edges of the hood.
  • a fan arranged above the stack of goods ensures that air is supplied from above under pressure is led down along the stack of goods and presses the existing edges to shrink against the pallet bottom. When the air emerges again, it comes up again in a gap outside an enclosure of the stack of goods.
  • the gas exchange carried out in this way thus leads to a lower pressure in the housing of the stack of goods than in the surroundings, so that the walls of the hood create before they start to shrink.
  • the plastic film hoods are usually cut to size, whereby a weld seam is created which runs transversely to the conveying direction and above which a separating cut is made, so that the plastic film is spread by gripping organs, for example on a frame according to DE A 23 46 464, and continue to be promoted.
  • the prepared film hood is formed from gusseted tubes according to its format. There are double folds in the ceiling area, which have a triangular shape.
  • a film cover sheet is placed on the pallet before loading with the goods, which can then be welded to the edge of the film hood later.
  • Outdoor storage, changing climatic conditions and similar influences must be taken into account.
  • a conventional forklift could get caught in loosely hanging film areas and cause damage.
  • increasing the static pressure or maintaining the same leads to the formation of a balloon, so that after shrink-wrapping the film it is necessary to wait a long time until the shrinking forces or the cooling forces lead to a regression of the inflation.
  • the film hood adheres irregularly to the wall of the stack of goods.
  • the invention lies in this extensive prior art starting from the task of significantly improving the film mobility with respect to the surface of the stack of goods, so that there is no overstretching or sticking to the film.
  • valve opening in an upper cover film.
  • fluidic requirements determine the position of the valve opening. If the flow path allows or even suggests, a valve opening will also have to be provided at a short distance from the inlet opening.
  • valve opening is advantageously closed after the application of heat, or is carried out on the same.
  • a particularly favorable valve opening position offers itself with the cover surfaces of hoods, to which one can make side gusseted hoses comes because they have multilayer triangles, of which the lower layer receives the valve opening.
  • the other layers cover the valve opening and at the same time form the prerequisite for the effective closure of the valve opening. Since there are triangular folds on both sides, two valve openings can be provided symmetrically.
  • valve opening in question is cut regularly before the hood is opened.
  • This purpose corresponds to a cutting device in which the separating plate for opening the side folds, as provided for example in DE-OS 30 11 264, is designed as a sheath for a blade, the latter then being extended with appropriate control and performing the slit-like opening.
  • the new process can also be carried out with a sealing effect, since it enables the pallet to be completely enclosed in plastic film.
  • a slightly larger perforated foil base sheet is placed on the unloaded pallet.
  • the perforation allows you to precisely define the places where the air flows in or out through the fan.
  • the protruding edge of the bottom sheet of film is folded up onto the wall of the stack of goods in order to be welded to the hood later. While the bottom foil cover sheets are blown up in this way, the edge of the foil hood reaches the bottom of the system through air supply.
  • the floor seal is optimally prepared so that the heating can then be carried out for the shrinking while simultaneously closing the entry area into the hood.
  • the perforation is shrunk tightly.
  • the latter can be selected for the formation of the valve opening by not completely forming the weld seam.
  • the film tube 1 is fed from above and gripped and spread by means of corner clamps, so that the film hood 2 is formed.
  • the side gussets 3 open, a partition plate being inserted between the sides.
  • triangles 5 with multiple folding are formed when it is spread out on the ceiling.
  • the multiple folds mentioned are recorded at the top shrink and weld to form a dense covering.
  • the film hood is placed on the associated stack of goods 6, which in turn is on the pallet 7.
  • the blower 8 which interacts with a bottom opening of the hood in such a way that there is a flow between the stack of goods and the film hood 2.
  • the valve openings 9 provided in the hood can compensate for the flow pressure. These openings can be closed by welding at the end of the treatment.
  • the fan 8 can advantageously be switched in both flow directions. so that the operation is also possible evacuating.
  • the embodiment according to FIG. 3 allows the stack of goods to be completely sealed by means of foils.
  • a perforated foil cover sheet is placed on the still unloaded pallet, which has a protruding edge 11. The latter is knocked up on the wall of the stack of goods, for which purpose flow forces serve. Air is blown upwards with the blower 8.
  • the film hood 2 can be set to either negative or positive pressure.
  • the perforation openings can be shrunk completely tight after the final shrinking.
  • Such an application of the invention is particularly suitable when the stacked goods have to be stored outside for a long time, so that weather damage and access to insects are avoided.
  • valve openings 9 are covered by the triangles 5. This arrangement is particularly favorable because it reliably prevents foreign matter from entering the hood through the valve openings.
  • the sealing can be carried out by welding the triangular layers at the end of the shrinking process, so that there is a complete seal.
  • cover foils are also used here, the edges 11 of which are folded up at the height 12 are welded to the foil hood 2 when the shrinkage is carried out.
  • Working with forklifts is also made easier by slitting the lower edge of the hood at crosses 13 so that the forks of the forklift can retract without causing warping.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Packages (AREA)
  • Stacking Of Articles And Auxiliary Devices (AREA)
EP92112655A 1992-07-24 1992-07-24 Procédé et dispositif pour l'emballage de marchandises empilées Expired - Lifetime EP0579858B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE59208586T DE59208586D1 (de) 1992-07-24 1992-07-24 Verfahren und Vorrichtung zur Verpackung von gestapelten Gütern
AT92112655T ATE153940T1 (de) 1992-07-24 1992-07-24 Verfahren und vorrichtung zur verpackung von gestapelten gütern
EP92112655A EP0579858B1 (fr) 1992-07-24 1992-07-24 Procédé et dispositif pour l'emballage de marchandises empilées

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92112655A EP0579858B1 (fr) 1992-07-24 1992-07-24 Procédé et dispositif pour l'emballage de marchandises empilées

Publications (2)

Publication Number Publication Date
EP0579858A1 true EP0579858A1 (fr) 1994-01-26
EP0579858B1 EP0579858B1 (fr) 1997-06-04

Family

ID=8209840

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92112655A Expired - Lifetime EP0579858B1 (fr) 1992-07-24 1992-07-24 Procédé et dispositif pour l'emballage de marchandises empilées

Country Status (3)

Country Link
EP (1) EP0579858B1 (fr)
AT (1) ATE153940T1 (fr)
DE (1) DE59208586D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1207109A1 (fr) * 2000-11-16 2002-05-22 Société Thimon Procédé et dispositif de houssage et de thermoscellage d'une housse en matière plastique thermorétractable pour constituer un emballage étanche palettisé
WO2013030401A3 (fr) * 2011-09-02 2013-05-02 Hi Tech Textile Holding Gmbh Dispositif de transport de balles pressées

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024081431A2 (fr) * 2022-10-14 2024-04-18 Signode Industrial Group Llc Machine à capot extensible pour capot extensible partiellement scellé

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1586421A1 (de) * 1967-02-28 1970-05-21 Alkor Oerlikon Plastic Gmbh Transport- und Lagereinheit
DE2146464A1 (de) * 1970-09-18 1972-03-23 Societe dApplicaüons Thermiques, Aix les Bains (Frankreich) Vorrichtung zum Aufbringen einer Hülle auf eine zu verpackende Ladung
US3807126A (en) * 1970-06-10 1974-04-30 Schwartz F Gmbh Ind Und Maschi Wrapping and securing loads on pallets
US3852937A (en) * 1968-08-06 1974-12-10 Auburn Eng Inc Shrink-wrapping method and apparatus
DE3011264A1 (de) * 1980-03-24 1981-10-01 Ing. Paul Joosten Verpackungstechnik, 4180 Goch Folienueberziehvorrichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1586421A1 (de) * 1967-02-28 1970-05-21 Alkor Oerlikon Plastic Gmbh Transport- und Lagereinheit
US3852937A (en) * 1968-08-06 1974-12-10 Auburn Eng Inc Shrink-wrapping method and apparatus
US3807126A (en) * 1970-06-10 1974-04-30 Schwartz F Gmbh Ind Und Maschi Wrapping and securing loads on pallets
DE2146464A1 (de) * 1970-09-18 1972-03-23 Societe dApplicaüons Thermiques, Aix les Bains (Frankreich) Vorrichtung zum Aufbringen einer Hülle auf eine zu verpackende Ladung
DE3011264A1 (de) * 1980-03-24 1981-10-01 Ing. Paul Joosten Verpackungstechnik, 4180 Goch Folienueberziehvorrichtung

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1207109A1 (fr) * 2000-11-16 2002-05-22 Société Thimon Procédé et dispositif de houssage et de thermoscellage d'une housse en matière plastique thermorétractable pour constituer un emballage étanche palettisé
WO2013030401A3 (fr) * 2011-09-02 2013-05-02 Hi Tech Textile Holding Gmbh Dispositif de transport de balles pressées
CN103889841A (zh) * 2011-09-02 2014-06-25 恒天(奥地利)控股有限公司 用于压缩捆包的带有运输设备的包装系统
CN103889841B (zh) * 2011-09-02 2016-03-16 恒天(奥地利)控股有限公司 用于压缩捆包的带有运输设备的包装系统
US9650166B2 (en) 2011-09-02 2017-05-16 Hi Tech Textile Holding Gmbh Transporting device for pressed bales

Also Published As

Publication number Publication date
ATE153940T1 (de) 1997-06-15
DE59208586D1 (de) 1997-07-10
EP0579858B1 (fr) 1997-06-04

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