EP3658465B1 - Abdeckung- und heisssiegel- vorrichtung und verfahren - Google Patents

Abdeckung- und heisssiegel- vorrichtung und verfahren Download PDF

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Publication number
EP3658465B1
EP3658465B1 EP18773529.5A EP18773529A EP3658465B1 EP 3658465 B1 EP3658465 B1 EP 3658465B1 EP 18773529 A EP18773529 A EP 18773529A EP 3658465 B1 EP3658465 B1 EP 3658465B1
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EP
European Patent Office
Prior art keywords
plastic film
heat
ring
load
support
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.)
Active
Application number
EP18773529.5A
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English (en)
French (fr)
Other versions
EP3658465C0 (de
EP3658465A1 (de
Inventor
Jean-Christophe Jaconelli
Yohann GAIDON
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Thimon SAS
Original Assignee
Thimon SAS
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Publication of EP3658465A1 publication Critical patent/EP3658465A1/de
Application granted granted Critical
Publication of EP3658465B1 publication Critical patent/EP3658465B1/de
Publication of EP3658465C0 publication Critical patent/EP3658465C0/de
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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
    • 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
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B53/00—Shrinking wrappers, containers, or container covers during or after packaging
    • B65B53/02—Shrinking wrappers, containers, or container covers during or after packaging by heat
    • B65B53/06—Shrinking wrappers, containers, or container covers during or after packaging by heat supplied by gases, e.g. hot-air jets
    • B65B53/066—Mobile frames, hoods, posts or the like
    • 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
    • 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
    • B65B11/04—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material the articles being rotated
    • B65B11/045—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material the articles being rotated by rotating platforms supporting the articles
    • 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

Definitions

  • the invention relates to a covering and heat-sealing process and to a covering and heat-sealing device capable of implementing such a process.
  • a load such as a package or a pallet is transported from its manufacturing site to a distribution area. During this transport, the load must be protected against dust and possibly against humidity.
  • a plastic film is unrolled from its support in order to continuously cover the side walls of the load to be protected by means of coils.
  • the cover and the coils protect the load from water which then runs off the protective plastic film.
  • the covering methods necessarily comprise a first step of forming a first set of ascending turns from the bottom of the load to the top of the load before depositing the cap .
  • the configuration of the first set of turns ensures a tile that prevents water infiltration.
  • FIG. 1 there is a method of covering a load 1 on a support 2.
  • the method comprises the installation of a cover 3 on the load 1 then the fixing of the cover 3 with the load 1 and more particularly the fixing to a pallet 2 which supports load 1.
  • the height of the cover 3 is configured to cover the entire height of the load 1 and the pallet 2.
  • a step of shrinking the cover 3 by heating is used simultaneously with the installation of the cover under the pallet.
  • the retraction step illustrated in picture 2 makes it possible to fix the cover 3 with the pallet 2 by using the transverse retraction of the cover 3.
  • the lateral retraction prevents the cover 3 from rising during the handling stages.
  • the lateral retraction stage is generally associated with a longitudinal retraction which applies a stress between the pallet 2 and the load 1.
  • the lower edge of the pallet provides the mechanical connection of the cover with the load 1.
  • the bottom of the cover 3 closes or hinders access to the handling holes of the pallet 2.
  • the material forming the cover 3 is not a very resistant material so that it is always possible to make one or more holes to facilitate the handling of the pallet 2.
  • this practice is prohibited because the formation of openings by forcing the cover 3 can cause damage to the cover 3 or even tear it.
  • load 1 may be damaged. It is also possible to damage the pallet storage means in a warehouse during attempts to separate the pallet 2 from the handling machine. In many warehouses, this type of covering is prohibited.
  • FIG. 3 and 4 there is also a method of covering which comprises the installation of a cover 3 on the load 1 then the heat sealing of the load 1 to an attachment point 4 which is formed by a ground sheet.
  • Load 1 is placed on a pallet 2 and the floor mat separates load 1 and pallet 2. In this configuration, the floor mat secures cover 3 with load 1 during the heat-sealing step.
  • This operation is faster than wrapping the side walls of the load and it is better accepted in the warehouse.
  • the cost of the floor mat and the constraint of installing the floor mat are not negligible elements and represent obstacles to the generalization of this solution.
  • this embodiment is almost exclusively reserved for areas where the tightness of the load vis-à-vis the outside is mandatory.
  • the document JP S57-8634 provides another solution to the drawbacks illustrated in relation to the figures 1 and 2 .
  • the length of the cover may be insufficient so that it is no longer possible to attach the cover to the underside of the pallet. It is proposed to use a reinforcing strip that prevents misalignment between the pallet and the load. This configuration ensures that the end of the cover comes into contact with the lower edge of the pallet. The mechanical support of the cover is provided by the lower edge of the pallet.
  • An object of the invention consists in providing a covering and heat-sealing method which is quick to implement and/or which is more economical than the methods of the prior art for forming an envelope integral with the load and/or the support. .
  • This result is sought to be achieved by means of a covering and heat sealing process according to the appended claims.
  • the method is remarkable in that the fixing zone is formed by at least one ring of plastic film under stress around the support and/or the load before heat sealing.
  • the ring of plastic film is formed by at least one turn.
  • the ring of plastic film comprises at least one flat strip.
  • the ring of plastic film comprises at least one strand intended to come into direct contact with the cover.
  • the fixing zone comprises only one or two turns formed by a strand of plastic film.
  • the ring of plastic film is formed around the support.
  • the support is a pallet comprising a floor surmounting at least two pallet runners, the ring of plastic film being formed around the floor.
  • the fixing zone comprises a plurality of turns formed by a strip of plastic film, the consecutive turns overlapping.
  • the cover is stretched during the heat-sealing step.
  • the fixing zone prefferably be formed after bringing the load into contact with the support and before putting on the cover.
  • the attachment zone is formed before bringing the load into contact with the support.
  • Another object of the invention consists of a covering and heat-sealing device which is more effective than the devices of the prior art in forming a waterproof envelope. This result is sought to be achieved by means of a covering and heat-sealing device according to the appended claims.
  • the method of covering a load is more precisely a method of covering and heat sealing.
  • the method comprises a first step of supplying a load 1 placed on a support 2.
  • Load 1 can have any shape.
  • load 1 can have a square, rectangular or circular section.
  • the load 1 is placed on a support 2 which is advantageously a pallet, but it is possible to use another type of support 2.
  • the support 2 can have any shape.
  • the horizontal section of load 1 has the same shape as the horizontal section of support 2, which makes it easier to hold load 1.
  • the cover 3 covers the top and at least partially the side walls of the load 1.
  • the cover 3 covers the side walls of the load 1 over the entire length.
  • the bottom of the cover 3 faces the support 2.
  • the cover 3 is installed by putting it on downwards so that part of the cover comes in front of an attachment zone 4.
  • a heat sealing step is then carried out so as to heat seal the cover 3 with the fixing zone 4.
  • the heat sealing will create a mechanical connection between the cover 3 and the fixing zone 4.
  • the heat sealing is carried out by heating the cover 3 and the attachment area 4.
  • the attachment zone 4 was formed by a floor mat which had to be installed before the load 1, which made the manufacturing process more complex and more expensive.
  • the inventors have observed that it is particularly advantageous to use at least one ring of plastic film to form the attachment zone 4.
  • the ring completely surrounds the load 1 and/or the support 2 in a section plane which is preferably a horizontal section plane.
  • the ring is under stress so that it clamps the load 1 and/or the support 2 in order to limit or even prevent a vertical displacement of the ring and the cover 3 when a vertical stress is applied to the cover 3.
  • the ring exerts a constraint on the side walls of the load and/or of the support 2.
  • the document JP S57-8634 does not propose to control the retraction of the cover, nor the fixing of the cover to the side walls of the load and/or the pallet because the cover is fixed under the lower edge of the pallet.
  • the plastic film used to form the ring can be a shrinkable plastic film, that is to say a film whose length and/or width decreases when it is heated. It is also possible to provide for the plastic film to be produced in a stretchable film, that is to say a film can be plastically deformed by traction. Depending on the configurations, the stretch film can be stretched before it is used to form the ring.
  • This embodiment is easy to make and it makes it easier to manage the stress around the load 1 and/or the support 2. Indeed, if the ring is initially deposited in the form of a closed ring of heat-shrinkable material , this requires a handling step to place the ring which is slightly larger than the pallet to take full advantage of the retraction and obtain the desired clamping force.
  • the ring By making the ring by banding, it is possible to better control the clamping force and therefore the mechanical support that exists between the cover and the pallet without passing the cover under the pallet.
  • the ring can be formed by any suitable plastic material, for example by a heat-shrinkable material or by a stretchable material.
  • the clamping force applied to the ring is between 0.2daN and 2daN.
  • the intensity of the tightening is dependent on the material forming the pallet or the load, the material forming the plastic film as well as the retraction force of the cover to be contained.
  • the intensity of the clamping force can be determined by making a ring around a support and pulling on this ring, for example with a dynamometer. When the ring has been moved from the support by 100mm, the associated force is measured.
  • the turn of plastic film is advantageously made by banding which is a well-known and mastered technique which makes it possible to form at least one turn which goes around the load 1 and/or the support 2 in order to define the fixing zone 4.
  • banding it is possible to easily define the tension applied to the turn or multiple turns so as to easily adapt to manufacturing, heat-sealing and handling constraints.
  • the attachment zone 4 is formed by a turn or by a plurality of turns.
  • the consecutive turns overlap at least partially to improve the mechanical strength of the heat seal.
  • the attachment zone 4 comprises less than ten turns so as not to form an attachment zone that is too wide or too bulky and not to penalize the duration of the production method with a step of forming the attachment zone 4 too long.
  • the fixing zone 4 comprises only one or two turns because this makes it possible to produce a fixing zone 4 with good mechanical resistance to the load 1 and a reduced production time.
  • the turns of the attachment zone 4 are strands.
  • strand it is meant that the turn is formed by several plastic films which are entangled to form a strand.
  • the strand can be formed by a single plastic film which is laterally shrunk to form a solid or substantially solid cylinder having the general shape of a strand or a tube.
  • the strand can be formed by a flat plastic film which is folded or twisted to form a three-dimensional element.
  • the strip represents a substantially two-dimensional plastic film, that is to say with a much greater width and length to film thickness. The thickness is preferably less than 1mm.
  • the web deforms to match the topography of Load 1 or Carrier 2.
  • the fixing zone 4 is formed by means of one or more strands. It is also possible to form the fixing zone 4 by means of one or more strands associated with one or more flat bands. The production of one or more strands is illustrated in figures 7, 8 , 9, 10 , 11 and 12 .
  • fastening zone comprising one or more strands
  • the strand or strands form at least one continuous ring of pleated film, that is to say a complete turn of pleated film around the load and/or the pallet.
  • This configuration makes it possible to better manage the stress in the film and thus better manage the retraction of the cover.
  • the film is deposited directly pleated or entangled on the side walls of the load and/or the pallet.
  • the fastening strip is deposited in the form of a flat strip which is deposited on abutments to avoid direct contact between the fastening strip and the side wall of the pallet. In this way, it is not possible to effectively manage the stress in the fastening strip because the stress decreases after removal of the stops and too much stress cannot be applied without risk of seeing the fastening strip deteriorate. when welding the folds.
  • an attachment zone 4 comprising at least one complete turn formed by a strand, that is to say a ring of pleated film, makes it possible to create an attachment zone 4 under stress which ensures the mechanical attachment between the cover 3 and the side wall of the load 1 and/or of the support 2 after the heating step applied to obtain the retraction of the cover 3 and without the retraction of the cover 3 does not move the attachment zone 4 too far up the load 1.
  • an attachment zone 4 formed by only one or more flat strips of plastic film results in the deformation of the attachment zone and/or of the cover 3 leading to the appearance of tears. Even if it is possible to form an attachment zone 4 with only one or more flat strips, it appeared that the operating conditions for forming a strong attachment zone 4 are much more difficult to obtain than for a strand. The operating conditions are more dependent on the thickness of the film forming the cover, the temperature of the annealing to obtain the retraction of the cover, the thickness of the material forming the fixing zone and its stretching rate. It also appeared that the use of a strand makes it possible to better preserve the stress applied to the pallet 2 or the load 1 by wrapping in comparison with a flat band.
  • the material forming the cover 3 reacts with the material forming the attachment zone 4 so as to create a mechanical connection. It has been observed that the mechanical fastening seems to be of better quality when the turn of the fastening zone 4 which comes into direct contact with the cover 3 is formed by a strand.
  • the attachment zone 4 comprises at least one strand which comes into direct contact with the cover 3 during the heat-sealing step.
  • the inventors believe that the excess material to be heated for the strand is compensated by its static configuration throughout the heat sealing. Thus, even if the strand rises in temperature less quickly, it is easier to ensure continuous contact between the cover 3 and the strand.
  • the document JP S57-8634 suggests using a flat strip of thermoplastic film and not a strand because it is taught to cover the pallet and the bottom of the load with the same film to avoid misalignment between these two elements and thus avoid using very long covers .
  • the document does not provide any information on the stress applied in the reinforcement strip because it is expected that the reinforcement strip and the cover bear against the lower edge of the pallet to avoid excessive shrinkage of the cover.
  • the reinforcement strip is not stressed as it is only configured to prevent misalignment between the load and the pallet.
  • the reinforcement strip is not intended to ensure the mechanical connection between the side walls of the load and/or the pallet with the cover. As indicated above, the cover rests on the lower edge of the pallet when the cover shrinks, which requires having a cover that descends under the pallet.
  • a fixing zone 4 formed by one or more coils and advantageously by banding makes it possible to install the fixing zone 4 precisely on the support 2 and/or on the load 1. There is no longer any , as in the prior art, the complete covering of the side walls of the support 2 in order to take fixation under the support 2.
  • the fixing zone is formed by several turns of film, the stress of which varies between the turns. It is better to to provide that the last turn in contact with the cover 3 (advantageously a strand) is less constrained than one or more turns located between the last turn and the load or the pallet.
  • the more the turn is stressed in tension the more it deteriorates during heating. The deterioration can result in the tearing of the turn or in a significant elongation which reduces the initial stress.
  • an attachment zone 4 which comprises several turns arranged on top of each other.
  • the annealing applied to fix the cover 3 with the fixing zone 4 is preferably configured so as to obtain the heat sealing of the last turn which is in contact with the cover 3 and the welding/bonding of the last turn with the front- last turn.
  • the materials forming the last turn and the cover 3 fuse so that it is difficult to discern an interface between these two layers after annealing.
  • the annealing it is advantageous to provide for the annealing to be configured to avoid melting all the turns, in other words the annealing is configured so that at least one turn remains below its melting temperature.
  • the annealing step is carried out in several successive passes of the heating in order to reduce the number of calories supplied to the fixing zone 4 per pass and to avoid melting all the turns.
  • the support 2 is a pallet
  • the floor is formed by a substantially horizontal board which surmounts the skids of the pallet, for example at least two skids of the pallet.
  • the floor and skids define the pallet handling ports.
  • the ring Since the ring is formed under tension, the plastic film does not hang down. This configuration reduces the risk of unwanted collision of the pallet with a handling machine. Furthermore, the vertical dimensions of the ring can be adapted to the dimensions of the pallet to avoid any unwanted covering of the handling holes.
  • the plastic film does not cover the pallet handling openings. If the openings of the pallet are covered, this covering is partial and only on the upper part of the pallet, which reduces the risk of snagging with handling equipment.
  • the height of the cover 3 is configured so as not to obstruct the handling orifices of the support 2, here of the pallet. It is also advantageous to provide that the cover 3 is a heat-shrinkable cover. In this way, during the heat sealing step or in a step to follow, it is possible to have the retraction of the lower part of the cover 3 which is under the mechanical connection with the fixing zone 4 which allows to reduce the rate of obstruction of handling holes and the risks of jamming with handling equipment.
  • the fixing zone 4 is formed only on the support 2, that is to say that the turn or the turns only face the support in the plane of the turn.
  • the attachment zone 4 has no contact with the load 1.
  • the attachment zone 4 is formed solely on the load 1, that is to say that the turn or turns only face 'at load 1 in the plane of the turn.
  • the attachment zone 4 has no contact with the support 2.
  • attachment zone 4 it is possible to make the attachment zone 4 partly on the support 2 and partly on the load 1.
  • a single attachment zone 4 is produced.
  • several fixing zones 4 are produced.
  • One or more heat-sealing steps can be carried out in order to fix the cover 3 to the multiple fixing zones 4.
  • the cover 3 is particularly advantageous to provide for the cover 3 to be stretched. Tension can be applied by pulling cover 3 down.
  • the attachment zone 4 is formed on the support 2 and/or on the load 1 after the support 2 and the load 1 have been brought into contact.
  • the support 2 and the load 1 are provided and the ring forming the fixing zone 4 is installed.
  • the attachment zone 4 is advantageously made before depositing the cover 3 because this greatly facilitates the realization of the attachment zone 4.
  • the attachment zone 4 is formed on the support 2 before adding the load 1 to it. It is then possible to prepare the attachment zones 4 on the supports 2 in advance and then use them to attach the cover 3 to the support 2.
  • cover 3 can be configured so as not to come in front of support 2.
  • the method comprises a step of vertical retraction of the cover 3.
  • the retraction of the cover can be carried out before the heat-sealing step or after the heat-sealing step.
  • the retraction of the cover 3 makes it possible to reduce the height of the cover 3 and thus to apply pressure between the support 2 and the load 1 by means of the cover 3 which rests on the support 2 via the fixing zone 4.
  • the retraction of the cover 3 can be carried out after the fixing of the cover 3 with the fixing zone 4.
  • the cover 3 can be stretched during the heat sealing in order to improve the mechanical strength of the fixing between the cover 3 and the fastening zone 4.
  • a partial retraction of the cover 3 can be carried out before sealing the cover 3 with the fixing zone 4 and a partial retraction is carried out after having sealed the cover 3 with the fixing zone 4.
  • the retraction is advantageously carried out by heating the cover 3 with heating means.
  • This configuration makes it possible to use the same heating means to carry out the shrinkage and the heat sealing.
  • the retraction is carried out before the heat sealing, it may be advantageous to stop the inflation just before the heat sealing to improve the quality of the heat sealing. It is also advantageous to carry out a suction step just before heat sealing in order to facilitate bringing the cover 3 into contact with the attachment zone 4 and thus improve the quality of the contact.
  • the inflation and the suction are advantageously carried out by the same ventilation device.
  • the ventilation device ensures either the inflation of the cover 3, or the suction of air. If the support 2 is not airtight, it is not necessary to use the air suction unless the load 1 obstructs the air evacuation.
  • the tensioning of the cover 3 can be carried out by means of a plurality of clamps.
  • the same clamps are used to slip the cover 3 around the load 1 and to put the cover 3 under tension.
  • the heating means is in the form a frame which surrounds the cover 3 and which moves vertically to be able to heat the entire height of the cover 3.
  • the heating means advantageously sends hot air in the direction of the cover 3 to carry out the retraction and the heat sealing, but other techniques can be envisaged such as, for example, the emission of infrared radiation.
  • the cover 3 is advantageously a polyethylene cover. It is advantageous to make the attachment zone 4 in polyethylene or in any other material capable of ensuring the mechanical attachment with the polyethylene.
  • the cover 3 and the attachment zone 4 are made of materials capable of providing heat sealing. In one embodiment, the materials are identical between the cover 3 and the attachment zone 4. Good results have been obtained by using a stretchable film to form the ring and a heat-shrinkable film to form the cover.
  • a heat-shrinkable film to form the ring of the fixing zone 4. If the fixing zone 4 is in the form of a ring before its installation, a first heating step causes the shrinkage which fixes the ring to load 1 and/or support 2.
  • the film is not heat-shrinkable, for example made of stretchable plastic material, it is advantageous to use an attachment zone 4 in the form of a strand to limit the rise in temperature in the attachment zone and thus limit the mechanical deformation of the fastening area under stress.
  • the heat-shrinkable material is thicker than a stretchable film and it sticks less well to itself or to other coils of shrinkable material.
  • a strand is particularly advantageous because it makes it possible to limit the rise in temperature by limiting the outer surface of the plastic film with respect to its volume.
  • the heating conditions are less restrictive.
  • the plastic film is a stretch film used in the form of a flat film, then it is advantageous to use a thick film, for example an unstretched film or a weakly stretched film, for example with an absolute stretch ratio less than 100% so as to maintain a substantial thickness and activate the film by stretching to improve its tackiness.
  • the thickness of the stretchable film forming the turns is greater than 15 ⁇ m and preferably 20 ⁇ m.
  • pallet By pallet is meant a rigid horizontal platform, of minimum height compatible with handling by means of pallet trucks and/or forklifts or other appropriate equipment.
  • the pallet is used as a support for gathering, stacking, storing, handling or transporting goods and loads.
  • the pallet is equipped with pallet pads which are spaced apart to define handling ports.
  • the attachment zone 4 is located above the openings of the pallet and/or only partially covers the various side faces of the pallet.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pallets (AREA)
  • Package Closures (AREA)

Claims (17)

  1. Verfahren zum Überziehen und Heißverschweißen einer Haube (3) um eine Ladung (1), umfassend:
    - Bereitstellen der Ladung (1), die auf einem Träger (2) angeordnet ist, wobei um den Träger (2) und/oder die Ladung (1) herum ein Ring aus Kunststofffolie gebildet wurde, um einen Befestigungsbereich (4) zu definieren,
    - Überziehen der Haube (3) über die Ladung (1), indem sie so nach unten gezogen wird, dass sie dem Ring aus Kunststofffolie gegenüberliegt,
    - Heißverschweißen der Haube (3) mit dem Ring aus Kunststofffolie, wobei der Ring aus Kunststofffolie die Seitenwände des Trägers (2) und/oder der Ladung (1) umspannt, um die Haube (3) an den Seitenwänden des Trägers (2) und/oder der Ladung (1) zu befestigen und einem Schrumpfen der Haube (3) entgegenzuwirken,
    dadurch gekennzeichnet, dass der Ring aus Kunststofffolie mindestens einen Strang aufweist, der vollständig um den Träger (2) und/oder die Ladung (1) herum verläuft, wobei der Strang durch Aufbringen einer plissierten Kunststofffolie gebildet wird.
  2. Verfahren zum Überziehen und Heißverschweißen nach Anspruch 1, wobei die Haube (3) mit einer Unterkante des Trägers (2) keinen Kontakt hat.
  3. Verfahren zum Überziehen und Heißverschweißen nach einem der vorherigen Ansprüche, wobei der Ring aus Kunststofffolie mit einer Unterkante des Trägers (2) keinen Kontakt hat.
  4. Verfahren zum Überziehen und Heißverschweißen nach einem der vorherigen Ansprüche, wobei der Ring aus Kunststofffolie zusätzlich zum Strang mindestens ein flaches Band aufweist.
  5. Verfahren zum Überziehen und Heißverschweißen nach einem der vorherigen Ansprüche, wobei der Ring aus Kunststofffolie nur eine oder zwei Windungen aufweist, die durch einen Strang aus Kunststofffolie gebildet werden.
  6. Verfahren zum Überziehen und Heißverschweißen nach einem der vorherigen Ansprüche, wobei der Ring aus Kunststofffolie mindestens einen Strang aufweist, die dazu bestimmt ist, in direktem Kontakt mit der Haube (3) zu kommen.
  7. Verfahren zum Überziehen und Heißverschweißen nach einem der Ansprüche 1 bis 5, wobei der Ring aus Kunststofffolie nur um den Träger (2) herum gebildet wird.
  8. Verfahren zum Überziehen und Heißverschweißen nach dem vorherigen Anspruch, wobei der Träger (2) eine Palette ist, die einen Boden aufweist, der auf mindestens zwei Palettenkufen liegt, wobei der Ring aus Kunststofffolie um den Boden herum gebildet wird.
  9. Verfahren zum Überziehen und Heißverschweißen nach einem der Ansprüche 1 bis 6, wobei der Ring aus Kunststofffolie ohne Kontakt mit dem Träger (2) um die Ladung (1) herum gebildet wird.
  10. Verfahren zum Überziehen und Heißverschweißen nach einem der vorherigen Ansprüche, wobei der Ring aus Kunststofffolie eine Vielzahl von Windungen aufweist, die durch ein Band aus Kunststofffolie gebildet werden, wobei die aufeinanderfolgenden Windungen sich überlappen.
  11. Verfahren zum Überziehen und Heißverschweißen nach einem der vorherigen Ansprüche, wobei der Ring aus Kunststofffolie eine Vielzahl von Windungen aufweist, wovon eine letzte Windung beim Schritt des Heißverschweißens mit der Haube (3) in Kontakt ist, wobei ein Glühen dazu konfiguriert ist, die Haube (3) mit der letzten Windung zu verschweißen und das Schmelzen mindestens einer anderen Windung der Vielzahl von Windungen zu verhindern.
  12. Verfahren zum Überziehen und Heißverschweißen nach einem der vorherigen Ansprüche, wobei der Ring aus Kunststofffolie gebildet wird, nachdem die Ladung (1) mit dem Träger (2) in Kontakt gebracht wird und bevor die Haube (3) übergezogen wird.
  13. Verfahren zum Überziehen und Heißverschweißen nach einem der Ansprüche 1 bis 11, wobei der Ring aus Kunststofffolie gebildet wird, bevor die Ladung (1) mit dem Träger (2) in Kontakt gebracht wird.
  14. Verfahren zum Überziehen und Heißverschweißen nach einem der vorherigen Ansprüche, wobei der Ring aus Kunststofffolie eine Vielzahl von Windungen aufweist, wovon eine letzte Windung mit der Haube (3) in Kontakt ist, wobei die letzte Windung einer geringeren Beanspruchung ausgesetzt ist als mindestens eine andere Windung der Vielzahl von Windungen.
  15. Verfahren zum Überziehen und Heißverschweißen nach einem der vorherigen Ansprüche, wobei der Ring aus Kunststofffolie eine Vielzahl von Windungen aufweist, wovon eine letzte Windung mit der Haube (3) in Kontakt ist, der Befestigungsbereich (4) vor dem Heißverschweißen geglüht wird, um mindestens zwei Windungen der Vielzahl von Windungen vor dem Heißverschweißen zu verkleben.
  16. Verfahren zum Überziehen und Heißverschweißen nach einem der vorherigen Ansprüche, wobei der Träger (2) Handhabungsöffnungen aufweist, und wobei der Ring aus Kunststofffolie oberhalb der Handhabungsöffnungen liegt.
  17. Vorrichtung zum Überziehen und Heißverschweißen einer Haube, dadurch gekennzeichnet, dass sie umfasst:
    - eine Banderoliervorrichtung, die dazu konfiguriert ist, eine Kunststofffolie abzugeben, die mindestens eine Windung um eine Ladung (1) oder um einen die Ladung (1) tragenden Träger (2) bildet, wobei die mindestens eine Windung einen Ring aus Kunststofffolie bildet, der dazu bestimmt ist, einen Befestigungsbereich (4) zu definieren, wobei der Ring aus Kunststofffolie die Seitenwände des Trägers (2) und/oder der Ladung (1) umspannt,
    - Mittel zum Überziehen einer Haube (3) über die Ladung (1), indem die Haube (3) nach unten gezogen wird, wobei die Mittel zum Überziehen der Haube (3) so konfiguriert sind, dass die Haube (3) dem Ring aus Kunststofffolie gegenüberliegt,
    - Heißverschweißungsmittel, die dazu konfiguriert ist, die Haube (3) mit dem Ring aus Kunststofffolie zu verschweißen, um die Haube (3) an den Seitenwänden des Trägers (2) und/oder der Ladung (1) zu befestigen, wobei der Ring aus Kunststofffolie einem Schrumpfen der Haube (3) entgegenwirkt,
    - eine Steuerschaltung, die dazu konfiguriert ist, die Betätigung der Heißverschweißungsmittel nach dem Überziehen der Haube (3) so zu steuern, dass die Haube (3) dem Ring aus Kunststofffolie beim Heißverschweißen gegenüberliegt,
    dadurch gekennzeichnet, dass die Banderoliervorrichtung so konfiguriert ist, dass der Ring aus Kunststofffolie mindestens einen Strang aufweist, der vollständig um den Träger (2) und/oder die Ladung (1) herum verläuft, wobei der Strang durch Aufbringen einer plissierten Kunststofffolie gebildet wird.
EP18773529.5A 2017-07-24 2018-07-24 Abdeckung- und heisssiegel- vorrichtung und verfahren Active EP3658465B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1756994A FR3069232B1 (fr) 2017-07-24 2017-07-24 Procede de houssage et thermoscellage et dispositif de houssage et thermoscellage
PCT/FR2018/051896 WO2019020930A1 (fr) 2017-07-24 2018-07-24 Procede de houssage et thermoscellage

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Publication number Priority date Publication date Assignee Title
JPS578634A (en) * 1980-06-13 1982-01-16 Ouji Seitai Kk Contracting packing method for pallet
FR2703024B1 (fr) * 1993-03-26 1995-06-16 Newtec Int Procede de suremballage et dispositif pour la mise en oeuvre dudit procede .
FR2816587B1 (fr) * 2000-11-16 2003-03-07 Thimon Procede et dispositif de houssage et de thermoscellage d'une housse en matiere plastique thermoretractable pour constituer un emballage etanche sur une charge palettisee
US20070220830A1 (en) * 2006-03-27 2007-09-27 Macleod Richard F J Methods and apparatus for preserving pallet units of fresh perishables in modified atmosphere-containing bags

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EP3658465A1 (de) 2020-06-03
FR3069232A1 (fr) 2019-01-25
FR3069232B1 (fr) 2021-10-29
WO2019020930A1 (fr) 2019-01-31

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