EP1486420B1 - Method and apparatus for packaging a load with a flexible heatshrinkable foil. - Google Patents

Method and apparatus for packaging a load with a flexible heatshrinkable foil. Download PDF

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Publication number
EP1486420B1
EP1486420B1 EP20040354022 EP04354022A EP1486420B1 EP 1486420 B1 EP1486420 B1 EP 1486420B1 EP 20040354022 EP20040354022 EP 20040354022 EP 04354022 A EP04354022 A EP 04354022A EP 1486420 B1 EP1486420 B1 EP 1486420B1
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EP
European Patent Office
Prior art keywords
hot air
load
heat
cover
shrinking
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Expired - Fee Related
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EP20040354022
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German (de)
French (fr)
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EP1486420A1 (en
Inventor
Jean-Paul Charles Martin Cocher
Georges Jaconelli
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Thimon SAS
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Thimon SAS
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B53/00—Shrinking wrappers, containers, or container covers during or after packaging
    • B65B53/02—Shrinking wrappers, containers, or container covers during or after packaging by heat
    • 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

Definitions

  • the document EP-A-933297 discloses a curtain packaging device making use of two films from two storage reels, and intended to envelop a load, undergoing welding and cutting operations.
  • the resulting envelope is open at both ends, and is then applied to the load by heat shrink.
  • a first flow of air is passed transversely from the inside to the edges and corners protruding from the upper face and the lower face of the load, and a second flow of hot air is sent from the outside to the edges to provide the retraction.
  • the first flow of cold air serves to vertically straighten protruding edges before the retraction process, and is derived from a feed pipe extending perpendicular to the upper face and the lower face in the middle zone of the load.
  • the shrinkage of the film on the load occurs by means of a heating frame framing the load and up and down on a frame.
  • a blast nozzle is located in the middle above and below the load, being connected to a source of compressed air, and comprising exhaust orifices distributed angularly in a ring, and oriented at an angle of 45.degree. ° with respect to the nozzle.
  • the flow of pressurized air at the outlet of the orifices is directed transversely towards the edges of the envelope, to straighten them while keeping the envelope open.
  • the first airflow used to straighten the edges to hold the envelope open over its entire height is cold, and oriented in the opposite direction with the hot air retraction of the second external air flow .
  • Cold air coming into contact with the inner wall of each edge may disturb the retraction.
  • the object of the invention is to develop a method of packaging a load by means of a heat-shrinkable film to obtain a regular and taut retraction of the film on top of the load.
  • the packaging method according to the invention is characterized in that the transverse air flow of lifting of the edge of the envelope, and the hot air of retraction come from the same furnace of hot air.
  • the hot retracting air is directed successively from the inside to the outside, then from the outside towards inside by moving the furnace at the start of its descent run.
  • the deflection of the retraction air at the beginning of the displacement path of the hot air generator is operated by a deflector located in the vicinity of the central zone above the load.
  • the velocity of the transverse air flow directed to the inner wall of the edge can be adjusted by means of an air suction device from the furnace.
  • the deflector is preferably vertically movable bearing on the load during the retraction phase, and has a convergent-divergent nozzle shape.
  • a hot air intake fan from the furnace may be arranged above the load, to return the hot air against the inner wall of the upper edge of the casing so as to increase the speed thereof. , and improve the thermal exchange of shrinkage.
  • the fan can be replaced by any other hot air suction means, including a venturi type nozzle.
  • a device (10) for packaging a load (CH) by means of a shroud (11) of flexible film made of heat-shrinkable material comprises a generator (12) of hot air consisting of by way of example, a movable heating frame-shaped gas burner (13) for surrounding the load (CH) coated with the casing (11).
  • the charge (CH) is usually placed on a pallet (not shown) fed into the packaging station by a conveyor, and the frame (13) heating is movable from top to bottom to heat shrink the film on the load (CH).
  • the film is made of polyethylene, but any other heat-shrinkable plastic material may be used.
  • the envelope (11) is open at both its lower and upper ends so as to form a sleeve, and is manufactured by a curtain packing process of the type described in the document FR 2606366 , or by any other method.
  • the open upper edge (14) of the envelope (11) is first raised vertically by a transverse air flow from the generator (12) of hot air.
  • a deflector (15) is secured to a support (16) arranged in the central zone above the upper face of the load (CH), so as to deflect the flow of hot air by 180 ° directing it towards the inner wall of the upper edge (14) at the beginning of the retraction phase of the envelope (11).
  • the support (16) of the deflector (15) can be fixed, but preferably vertically movable bearing on the load (CH) during retraction.
  • the frame (13) of the hot air generator (12) is connected by a bellows (18) to the frame of the hood (17) integral with the frame of the machine, said bellows being deformable at the during the downward movement of the frame (13).
  • the transverse air flow for raising the upper edge (14) of the envelope (11) and the hot retraction air come from the same generator (12).
  • the hot air is used successively from the inside to the outside for the recovery of the upper edge (14), then from the outside to the inside for the retraction of the film .
  • a fan (19) is associated with the baffle (15) to accelerate the return of hot air from the generator (12).
  • the velocity of the transverse air flow towards the inner wall of the edge (14) is thus increased to improve the thermal exchange of shrinkage.
  • the fan (19) of Figure 4 is replaced by any other pneumatic suction or blowing apparatus, in particular a nozzle (20) of the Venturi type.

Description

Domaine technique de l'inventionTechnical field of the invention

L'invention est relative à un procédé d'emballage d'une charge au moyen d'une enveloppe de film souple en matière thermorétractable, ayant un bord ouvert au niveau de la face supérieure de la charge, et consistant à :

  • relever verticalement le bord ouvert de l'enveloppe en le faisant dépasser de la face supérieure de la charge au moyen d'un écoulement d'air transversal dirigé vers la surface interne du bord ouvert,
  • et chauffer le film par de l'air chaud sur toute la surface latérale extérieure de l'enveloppe pour assurer la thermorétraction du film sur la charge,
The invention relates to a method for packaging a load by means of a heat-shrinkable flexible film casing having an open edge at the upper face of the load, and comprising:
  • lift the open edge of the envelope vertically upwards from the upper face of the load by means of a transverse air flow directed towards the inner surface of the open edge,
  • and heating the film with hot air over the entire outer side surface of the envelope to heat shrink the film on the load,

Etat de la techniqueState of the art

Le document EP-A-933297 décrit un dispositif d'emballage à rideau faisant usage de deux films en provenance de deux bobines de stockage, et destinés à envelopper une charge, en subissant des opérations de soudure et de sectionnement. L'enveloppe résultante est ouverte à ses deux extrémités, et est ensuite appliquée sur la charge par thermorétraction. Un premier écoulement d'air est envoyé transversalement de l'intérieur vers les bords et coins dépassant la face supérieure et la face inférieure de la charge, et un deuxième écoulement d'air chaud est envoyé de l'extérieur vers les bords pour assurer la rétraction. Le premier écoulement d'air froid sert à redresser verticalement les bords saillants avant le processus de rétraction, et est issu d'une tubulure d'alimentation s'étendant perpendiculairement à la face supérieure et à la face inférieure dans la zone médiane de la charge.The document EP-A-933297 discloses a curtain packaging device making use of two films from two storage reels, and intended to envelop a load, undergoing welding and cutting operations. The resulting envelope is open at both ends, and is then applied to the load by heat shrink. A first flow of air is passed transversely from the inside to the edges and corners protruding from the upper face and the lower face of the load, and a second flow of hot air is sent from the outside to the edges to provide the retraction. The first flow of cold air serves to vertically straighten protruding edges before the retraction process, and is derived from a feed pipe extending perpendicular to the upper face and the lower face in the middle zone of the load.

Dans le document EP-A-1147050 , la rétraction du film sur la charge intervient au moyen d'un cadre chauffant encadrant la charge et pouvant monter et descendre sur un bâti. Une buse de soufflage est située au milieu au-dessus et en-dessous de la charge, en étant reliée à une source d'air comprimé, et comprenant des orifices d'échappement répartis angulairement selon un anneau, et orientés avec un angle de 45° par rapport à la buse. L'écoulement d'air sous pression à la sortie des orifices est dirigé transversalement vers les bords de l'enveloppe, pour les redresser en maintenant l'enveloppe ouverte.In the document EP-A-1147050 , the shrinkage of the film on the load occurs by means of a heating frame framing the load and up and down on a frame. A blast nozzle is located in the middle above and below the load, being connected to a source of compressed air, and comprising exhaust orifices distributed angularly in a ring, and oriented at an angle of 45.degree. ° with respect to the nozzle. The flow of pressurized air at the outlet of the orifices is directed transversely towards the edges of the envelope, to straighten them while keeping the envelope open.

Dans les deux dispositifs précités, le premier écoulement d'air servant à redresser les bords pour tenir l'enveloppe ouverte sur toute sa hauteur, est froid, et orienté en sens inverse avec l'air chaud de rétraction du deuxième écoulement d'air extérieur. L'air froid venant en contact avec la paroi interne de chaque bord risque de perturber la rétraction.In the two aforementioned devices, the first airflow used to straighten the edges to hold the envelope open over its entire height, is cold, and oriented in the opposite direction with the hot air retraction of the second external air flow . Cold air coming into contact with the inner wall of each edge may disturb the retraction.

Objet de l'inventionObject of the invention

L'objet de l'invention consiste à élaborer un procédé d'emballage d'une charge au moyen d'un film thermorétractable permettant d'obtenir une rétraction régulière et tendue du film sur le dessus de la charge.The object of the invention is to develop a method of packaging a load by means of a heat-shrinkable film to obtain a regular and taut retraction of the film on top of the load.

Le procédé d'emballage selon l'invention est caractérisé en ce que l'écoulement d'air transversal de relèvement du bord de l'enveloppe, et l'air chaud de rétraction proviennent du même générateur d'air chaud. L'air chaud de rétraction est dirigé successivement de l'intérieur vers l'extérieur, puis de l'extérieur vers l'intérieur en déplaçant le générateur d'air chaud au début de sa course de descente.The packaging method according to the invention is characterized in that the transverse air flow of lifting of the edge of the envelope, and the hot air of retraction come from the same furnace of hot air. The hot retracting air is directed successively from the inside to the outside, then from the outside towards inside by moving the furnace at the start of its descent run.

Il en résulte un effet de préchauffage de la paroi interne du bord supérieur de l'enveloppe, qui améliore la phase de rétraction du bord supérieur du film sur la face horizontale de la charge. La déviation de l'air de rétraction au début de la course de déplacement du générateur d'air chaud est opérée par un déflecteur se trouvant au voisinage de la zone médiane au-dessus de la charge.This results in a preheating effect of the inner wall of the upper edge of the envelope, which improves the retraction phase of the upper edge of the film on the horizontal face of the load. The deflection of the retraction air at the beginning of the displacement path of the hot air generator is operated by a deflector located in the vicinity of the central zone above the load.

La vitesse de l'écoulement d'air transversal dirigé vers la paroi interne du bord peut être ajustée au moyen d'un dispositif d'aspiration de l'air en provenance du générateur d'air chaud.The velocity of the transverse air flow directed to the inner wall of the edge can be adjusted by means of an air suction device from the furnace.

L'invention concerne également un dispositif d'emballage comportant :

  • un dispositif pour entourer la charge au moyen d'un film thermorétractable, et pour relever verticalement le bord supérieur ouvert de l'enveloppe par un écoulement d'air transversal,
  • un générateur d'air chaud formé par un cadre chauffant entourant l'enveloppe, et déplaçable de haut en bas pour assurer la thermorétraction du film et du bord supérieur sur la charge,
caractérisé en ce que le générateur d'air chaud coopère avec un déflecteur pour envoyer successivement l'écoulement d'air transversal, et l'air de rétraction respectivement sur la paroi interne, et la paroi externe du bord supérieur de l'enveloppe.The invention also relates to a packaging device comprising:
  • a device for surrounding the load by means of a heat-shrinkable film, and for vertically raising the open upper edge of the envelope by a transverse air flow,
  • a hot air generator formed by a heating frame surrounding the envelope, and movable up and down to heat shrink the film and the upper edge on the load,
characterized in that the hot air generator cooperates with a deflector to successively send the transverse air flow, and the retraction air respectively to the inner wall, and the outer wall of the upper edge of the casing.

Le déflecteur est de préférence mobile verticalement en venant en appui sur la charge lors de la phase de rétraction, et possède une forme de tuyère à convergent-divergent.The deflector is preferably vertically movable bearing on the load during the retraction phase, and has a convergent-divergent nozzle shape.

Un ventilateur de reprise d'air chaud en provenance du générateur d'air chaud peut être agencé au-dessus de la charge, pour renvoyer l'air chaud contre la paroi interne du bord supérieur de l'enveloppe de manière à en augmenter la vitesse, et améliorer l'échange thermique de rétraction. Le ventilateur peut être remplacé par tout autre moyen d'aspiration de l'air chaud, notamment une tuyère du type Venturi.A hot air intake fan from the furnace may be arranged above the load, to return the hot air against the inner wall of the upper edge of the casing so as to increase the speed thereof. , and improve the thermal exchange of shrinkage. The fan can be replaced by any other hot air suction means, including a venturi type nozzle.

Description sommaire des dessinsBrief description of the drawings

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre d'un mode de réalisation de l'invention donné à titre d'exemple non limitatif, et représenté aux dessins annexés, dans lesquels:

  • la figure 1 est une vue schématique du dispositif d'emballage selon l'invention, montrant la première étape de redressement du bord supérieur de l'enveloppe au moyen de l'air chaud issu du générateur d'air chaud ;
  • la figure 2 représente une vue identique de la figure 1, au début de la course de descente du générateur d'air chaud engendrant la rétraction du bord supérieur du film sur la charge ;
  • la figure 3 montre le générateur d'air chaud en position de fin de course de descente après la rétraction totale du film sur la surface latérale de la charge;
  • les figures 4 et 5 sont des vues identiques de la figure 1 de deux variantes de réalisation.
Other advantages and features will emerge more clearly from the following description of an embodiment of the invention given by way of non-limiting example, and represented in the accompanying drawings, in which:
  • Figure 1 is a schematic view of the packaging device according to the invention, showing the first step of recovery of the upper edge of the envelope by means of the hot air from the hot air generator;
  • FIG. 2 represents an identical view of FIG. 1, at the beginning of the descent run of the hot air generator generating the retraction of the upper edge of the film on the load;
  • Fig. 3 shows the hot air generator at the end of the descent end position after the total retraction of the film on the lateral surface of the load;
  • Figures 4 and 5 are identical views of Figure 1 of two embodiments.

Description d'un mode de réalisation préférentiel.Description of a Preferred Embodiment

En référence aux figures 1 à 3, un dispositif d'emballage (10) d'une charge (CH) au moyen d'une enveloppe (11) de film souple en matière thermorétractable, comporte un générateur (12) d'air chaud constitué, à titre d'exemple, par un brûleur à gaz en forme de cadre (13) chauffant mobile destiné à entourer la charge (CH) revêtue de l'enveloppe (11). La charge (CH) est généralement posée sur une palette (non représentée) amenée dans le poste d'emballage par un convoyeur, et le cadre (13) chauffant est déplaçable de haut en bas pour assurer la thermorétraction du film sur la charge (CH).With reference to FIGS. 1 to 3, a device (10) for packaging a load (CH) by means of a shroud (11) of flexible film made of heat-shrinkable material, comprises a generator (12) of hot air consisting of by way of example, a movable heating frame-shaped gas burner (13) for surrounding the load (CH) coated with the casing (11). The charge (CH) is usually placed on a pallet (not shown) fed into the packaging station by a conveyor, and the frame (13) heating is movable from top to bottom to heat shrink the film on the load (CH).

Le film est en polyéthylène, mais toute autre matière plastique thermorétractable peut être utilisée.The film is made of polyethylene, but any other heat-shrinkable plastic material may be used.

L'enveloppe (11) est ouverte à ses deux extrémités inférieure et supérieure de manière à former un manchon, et est fabriquée par un procédé d'emballage à rideau du type décrit dans le document FR 2606 366 , ou par tout autre procédé.The envelope (11) is open at both its lower and upper ends so as to form a sleeve, and is manufactured by a curtain packing process of the type described in the document FR 2606366 , or by any other method.

Pour garantir une rétraction régulière et tendue du film sur le dessus de la charge (CH), le bord supérieur (14) ouvert de l'enveloppe (11) est d'abord relevé verticalement grâce à un écoulement d'air transversal en provenance du générateur (12) d'air chaud. A cet effet, un déflecteur (15) est solidarisé à un support (16) agencé dans la zone médiane au-dessus de la face supérieure de la charge (CH), de manière à dévier l'écoulement d'air chaud de 180° en le dirigeant vers la paroi interne du bord supérieur (14) au début de la phase de rétraction de l'enveloppe (11).To ensure a smooth and taut retraction of the film on top of the load (CH), the open upper edge (14) of the envelope (11) is first raised vertically by a transverse air flow from the generator (12) of hot air. For this purpose, a deflector (15) is secured to a support (16) arranged in the central zone above the upper face of the load (CH), so as to deflect the flow of hot air by 180 ° directing it towards the inner wall of the upper edge (14) at the beginning of the retraction phase of the envelope (11).

Le support (16) du déflecteur (15) peut être fixe, mais de préférence mobile verticalement en venant en appui sur la charge (CH) lors de la rétraction.The support (16) of the deflector (15) can be fixed, but preferably vertically movable bearing on the load (CH) during retraction.

A titre d'exemple, le cadre (13) du générateur (12) d'air chaud est relié par un soufflet (18) à l'ossature de la hotte (17) solidaire du bâti de la machine, ledit soufflet étant déformable au cours du mouvement de descente du cadre (13).For example, the frame (13) of the hot air generator (12) is connected by a bellows (18) to the frame of the hood (17) integral with the frame of the machine, said bellows being deformable at the during the downward movement of the frame (13).

Le fonctionnement du dispositif d'emballage (10) selon les figures 1 à 3, est le suivant :

  • Sur la figure 1, l'écoulement d'air chaud issu du générateur (12) est dirigé vers le déflecteur (15) dans le sens de la flèche F1, de manière à être dévié de 180° et renvoyé de l'intérieur vers la paroi interne du bord (14). Ce dernier est redressé verticalement, et subit simultanément un préchauffage suite à l'apport de chaleur.
  • Sur la figure 2, le cadre (13) du générateur (12) d'air chaud commence son mouvement de descente en effectuant la rétraction du bord supérieur (14) de l'enveloppe (11 ) sur la face supérieure de la charge (CH). Lorsque le cadre (13) arrive sensiblement au niveau de la face supérieure de la charge (CH), le sens de propagation de l'air chaud s'inverse (flèche F2) en étant dévié vers le haut par le déflecteur (15) pour ne pas perturber l'application du film sur le dessus de la charge (CH) emballée.
  • La figure 3 montre la poursuite du mouvement de descente du cadre (13) pour la thermorétraction des faces latérales de l'enveloppe (11) sur la charge (CH).
The operation of the packaging device (10) according to FIGS. 1 to 3 is as follows:
  • In FIG. 1, the flow of hot air from the generator (12) is directed towards the deflector (15) in the direction of the arrow F1, so as to be deviated by 180 ° and returned from the inside towards the inner wall of the edge (14). The latter is straightened vertically, and undergoes simultaneous preheating following the input of heat.
  • In FIG. 2, the frame (13) of the hot air generator (12) begins its downward movement by effecting the retraction of the upper edge (14) of the casing (11) on the upper face of the load (CH). ). When the frame (13) substantially reaches the upper face of the load (CH), the direction of propagation of the hot air is reversed (arrow F2) being deflected upwards by the deflector (15) to do not disturb the application of the film on top of the packaged charge (CH).
  • Figure 3 shows the continued downward movement of the frame (13) for heat shrinking of the side faces of the casing (11) on the load (CH).

On remarque que l'écoulement d'air transversal de relèvement du bord (14) supérieur de l'enveloppe (11), et l'air chaud de rétraction proviennent du même générateur (12). Pendant la course de descente du cadre (13), l'air chaud est utilisé successivement de l'intérieur vers l'extérieur pour le relèvement du bord (14) supérieur, puis de l'extérieur vers l'intérieur pour la rétraction du film.It will be noted that the transverse air flow for raising the upper edge (14) of the envelope (11) and the hot retraction air come from the same generator (12). During the descent run of the frame (13), the hot air is used successively from the inside to the outside for the recovery of the upper edge (14), then from the outside to the inside for the retraction of the film .

Sur la figure 4, un ventilateur (19) est associé au déflecteur (15) pour accélérer la reprise de l'air chaud en provenance du générateur (12). La vitesse de l'écoulement d'air transversal vers la paroi interne du bord (14) est ainsi augmentée pour améliorer l'échange thermique de rétraction.In Figure 4, a fan (19) is associated with the baffle (15) to accelerate the return of hot air from the generator (12). The velocity of the transverse air flow towards the inner wall of the edge (14) is thus increased to improve the thermal exchange of shrinkage.

Selon la variante de la figure 5, le ventilateur (19) de la figure 4 est remplacé par tout autre appareil pneumatique d'aspiration ou de soufflage, notamment une tuyère (20) du type Venturi.According to the variant of Figure 5, the fan (19) of Figure 4 is replaced by any other pneumatic suction or blowing apparatus, in particular a nozzle (20) of the Venturi type.

Claims (14)

  1. Packaging method of a load by means of a flexible film cover made of heat-shrink material, having an open edge at the level of the top surface of the load, and consisting in:
    - lifting the open edge of the cover vertically making the latter extend beyond the top surface of the load by means of a transverse air flow directed towards the internal surface of the open edge,
    - heating the film by the hot air over the whole external lateral surface of the cover to ensure heat-shrinking of the film onto the load,
    characterized in that the transverse air flow lifting the edge (14) of the cover (11) and the heat-shrinking hot air are provided by the same hot air generator (12).
  2. Packaging method according to claim 1, characterized in that the heat-shrinking hot air is directed successively from the inside to the outside, then from the outside to the inside, by moving the hot air generator (12) downwards.
  3. Packaging method according to claim 1 or 2, characterized in that the transverse air flow is hot so as to perform pre-heating of the inside wall of the top edge (14) of the cover (11).
  4. Packaging method according to one of the claims 1 to 3, characterized in that the air performing heat-shrinking of the top edge (14) of the cover is directed in opposite directions to successively act on the inside wall and on the outside wall of said edge.
  5. Packaging method according to claim 4, characterized in that diversion of the heat-shrinking air at the beginning of movement of the hot air generator (12) is performed by a deflector (15) located close to the middle zone above the load (CH).
  6. Packaging method according to one of the claims 1 to 5, characterized in that the speed of the transverse air flow directed towards the inside wall of the edge (14) is increased by means of a suction device of the air coming from the hot air generator (12).
  7. Packaging device for implementation of the method according to one of the claims 1 to 6, comprising:
    - a device for surrounding the load by means of a heat-shrink film and for lifting the top edge of the cover vertically by means of a transverse air flow,
    - a hot air generator formed by a heating frame surrounding the cover and movable in the downwards direction to ensure heat-shrinking of the film and of the top edge onto the load,
    characterized in that said hot air generator (12) operates in conjunction with a deflector (15) to successively dispatch the transverse air flow and the heat-shrinking air respectively to the inside wall and the outside wall of the top edge (14) of the cover (11).
  8. Packaging device according to claim 7, characterized in that the deflector (15) is fixed and is located above the load (CH).
  9. Packaging device according to claim 7, characterized in that the deflector (15) is movable vertically and is pressing on the load (CH) during the heat-shrink phase.
  10. Packaging device according to claim 8 or 9, characterized in that the deflector (15) has the shape of a convergent-divergent nozzle.
  11. Packaging device according to one of the claims 7 to 10, characterized in that the means for dispatching hot air coming from the hot air generator (12) are arranged above the load (CH) to dispatch the hot air against the inside wall of the top edge (14) of the cover (1) so as to increase the speed thereof and to improve the heat exchange for performing heat-shrinking.
  12. Packaging device according to claim 11, characterized in that the hot air generator (12) is formed by a gas burner shaped as a rectangular frame (13).
  13. Packaging device according to claim 11, characterized in that the hot air dispatching means (19) comprise a fan (19) communicating with the deflector (15) via a hot air inlet vent.
  14. Packaging device according to claim 11, characterized in that the hot air dispatching means (19) comprise a suction device, in particular with a Venturi nozzle (20).
EP20040354022 2003-06-06 2004-06-02 Method and apparatus for packaging a load with a flexible heatshrinkable foil. Expired - Fee Related EP1486420B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0306828 2003-06-06
FR0306828A FR2855814B1 (en) 2003-06-06 2003-06-06 METHOD AND DEVICE FOR PACKAGING A LOAD BY A THERMORETRABLE SOFT FILM

Publications (2)

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EP1486420A1 EP1486420A1 (en) 2004-12-15
EP1486420B1 true EP1486420B1 (en) 2007-08-29

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EP20040354022 Expired - Fee Related EP1486420B1 (en) 2003-06-06 2004-06-02 Method and apparatus for packaging a load with a flexible heatshrinkable foil.

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EP (1) EP1486420B1 (en)
ES (1) ES2293188T3 (en)
FR (1) FR2855814B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101296847B (en) * 2005-10-24 2012-05-09 Msk包装系统股份有限公司 Method and device for shrinking a heat shrink film placed around a stack of items, in particular a palleted stack of items

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202005020192U1 (en) 2005-10-24 2006-05-24 MSK-Verpackungs-Systeme Gesellschaft mit beschränkter Haftung Device for shrinking a heat-shrinkable film placed around a, in particular palletized, stack of goods

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2606366B1 (en) 1986-11-12 1989-07-13 Newtec Int PASS-THROUGH PACKAGING PROCESS AND MACHINE
DE4423513C1 (en) * 1993-10-26 1996-02-01 Moellers Maschf Gmbh Device for shrinking a shrink film hood
FR2722473B1 (en) * 1994-07-18 1996-08-30 Newtec Int LOAD PACKAGING APPARATUS AND METHOD USING SUCH APPARATUS
DE19803244C2 (en) 1998-01-28 2003-04-24 Kurt Lachenmeier As Sonderborg Method and device for packaging a good
ES2183785T3 (en) * 1999-01-28 2003-04-01 Msk Verpackung Syst Gmbh DEVICE FOR THE CONTRA6ATION OF A HOT CONTRACT SHEET.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101296847B (en) * 2005-10-24 2012-05-09 Msk包装系统股份有限公司 Method and device for shrinking a heat shrink film placed around a stack of items, in particular a palleted stack of items

Also Published As

Publication number Publication date
ES2293188T3 (en) 2008-03-16
FR2855814B1 (en) 2005-08-19
FR2855814A1 (en) 2004-12-10
EP1486420A1 (en) 2004-12-15

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