EP2860117B1 - Machine for bagging food products and method for bagging food products - Google Patents

Machine for bagging food products and method for bagging food products Download PDF

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Publication number
EP2860117B1
EP2860117B1 EP14188455.1A EP14188455A EP2860117B1 EP 2860117 B1 EP2860117 B1 EP 2860117B1 EP 14188455 A EP14188455 A EP 14188455A EP 2860117 B1 EP2860117 B1 EP 2860117B1
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EP
European Patent Office
Prior art keywords
sleeve
tray
machine
food product
machine according
Prior art date
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EP14188455.1A
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German (de)
French (fr)
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EP2860117A1 (en
Inventor
Hervé Duffner
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Dune
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Dune
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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
    • B65B25/00—Packaging other articles presenting special problems
    • B65B25/16—Packaging bread or like bakery products, e.g. unsliced loaves
    • 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
    • B65B39/00—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers
    • B65B39/06—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers adapted to support containers or wrappers
    • 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
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/26—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks
    • B65B43/34—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks by internal pressure
    • 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
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/26—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks
    • B65B43/34—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks by internal pressure
    • B65B43/36—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks by internal pressure applied pneumatically
    • 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

Definitions

  • the invention relates to a machine for bagging elongated food products, in particular breads.
  • the invention also relates to a method of bagging an elongate food product.
  • EP-B-0 779 209 discloses the preamble of claim 1, EP-B-1 028 054 or EP-A-2 511 188 , to use a bagging machine for packaging breads in bags formed from a sheath wound on a reel.
  • the sheath is unwound on a tray and shaped by means of a blower system so that the end of the bread can be inserted into the sheath.
  • the sheath is cut, folded and welded to form a bag in which the bread can then be completely inserted.
  • the shape of the end of the sheath is circular, and therefore rather adapted to the introduction of loaves of substantially circular section.
  • introducing a bread having a flat base it is likely to be blocked by the edges of the sheath.
  • the bag formed by cutting, folding and welding of the sheath it is no longer held in position, so that the projection of the bread at the bottom of the bag is not complete.
  • the invention intends to remedy by proposing a new bagging machine for breads, making it possible to bag breads more efficiently than the machines of the state of the art, and allowing bagging. more varieties of bread.
  • the invention relates to a bagging machine as defined in claim 1.
  • an edge of the end of the sheath is pressed against the tray, which allows flat-bottomed loaves to be more easily inserted into the bag.
  • the sheath since the sheath is held in position before cutting, the end of the bread no longer needs to be inserted in the sheath before the formation of the bag, and the bread can then be propelled properly to the bottom of the bag.
  • such a bagging machine may incorporate one or more of the features, taken in any technically permissible combination, defined in claims 2 to 11.
  • the invention also relates to a bagging method as defined in claim 12.
  • the machine 1 represented in Figures 1 to 9 is intended to be installed, for example, in the bakery department of a large area.
  • the machine 1 is intended for bagging elongated food products, especially breads.
  • the bagging machine 1 comprises a frame which is not shown for the sake of clarity of the drawings.
  • the machine 1 comprises a coil 5 rotatably mounted relative to the frame and supporting a tubular sheath 7 wound.
  • the machine 1 comprises a drive mechanism of the sheath 7 from the reel 5, including rollers 8 and 9, to a plate 10 on which the sheath 7 is positioned for the bagging of the loaves 3.
  • the machine 1 comprises means 13 for cutting and welding the sheath 7 able to form bags 11 from the sheath 7.
  • the means 13 for cutting and welding comprise jaws adapted to cut the sheath 7, bending members of the portion cut at its end and heating means capable of welding the folded portion to the unfolded portion of the sheath 7, according to a known technique of EP-A-2 511 188 .
  • the sheath 7 is positioned on the plate 10, it is opposite an introduction treadmill 15 for directing the loaves 3, along a longitudinal axis X-X ', to the plate 10 and to introduce them into the sheath 7 along the axis X-X ', which defines the bagging direction.
  • the machine 1 comprises a blower system for shaping the sheath 7 when it is positioned on the plate 10 and the bags 11 when the loaves 3 are introduced.
  • the blower system comprises an upper fan 17 disposed above the introductory conveyor belt 15, which generates an air flow F1 in a direction oblique with respect to the plate 10 and to the axis X-X ', and which makes it possible to keep the bag 11 in shape by inflating it with air, so that it has a substantially cylindrical shape with a circular section facilitating the insertion of a bread 3.
  • the bagging machine 1 comprises, at the outlet of the introducer conveyor 15 on the plate 10, a locking member adapted to lock the sheath 7 in position against the plate 10 before the cutting and welding of the sheath 7 by the means 13, to form the bag 11.
  • the locking member comprises a flap 19 adapted to fall back into the sheath 7 when shaped by the blower system.
  • the shutter 19 is rotatable about an axis Y19 perpendicular to the axis X-X ', between a first raised position shown in FIGS. Figures 1 and 2 , and a second folded position, represented in Figures 3 to 7 , in which the flap 19 is folded substantially parallel to the plate 10. In its second position, the flap 19 exerts a force F2 perpendicular to the plate 10 which plates a lower edge 70a of an end 70 of the sheath 7, open on the introductory treadmill 15, against the plate 10, to hold it in position.
  • the passage of the flap 19 between its first and second position, and vice versa, is obtained by means of a jack or any other mechanical, electrical or pneumatic actuator. According to a not shown embodiment, in its first position, the flap 19 can be retracted under the plate 10.
  • the flap 19 makes it possible to form the bags 11 before the introduction of the loaves 3, by implementing a bagging process taking place in the following manner: the sheath 7 is unwound from the reel 5 on the plate 10. The unwinding sheath 7 is shaped using the blower system, while the edge 70a of the sheath 7 is locked against the plate 10 by means of the shutter 19. Once locked in position, the sheath 7 is cut off folded and welded using means 13 for cutting, folding and welding. A bag 11 is thus obtained. Then, the loaves 3 are inserted into the bags 11 thus formed, by means of the introductory treadmill 15, while the bag is held in place on the plate 10 by the flap 19 which clamps against the tray.
  • This method makes it possible to form the bags 11 from the sheath 7, before the introduction of the loaves 3.
  • the bag 11 thus formed being held in position by the flap 19 along the axis X-X ', the insertion of the loaves 3 is facilitated, and the correct positioning of the loaves 3 at the bottom of the bags 11 is obtained.
  • the blower system of the machine 1 comprises a second fan 21, blowing from a space located under the introductory conveyor belt 15, and which generates a flow of air F3 substantially parallel to the plate 10, and whose speed is less than the speed of the air flow F1 generated by the first fan 17.
  • the fan 17 is deactivated and the fan 21 is activated.
  • the speed of the air flow F3 is sufficient to open the sheath 7 so that the flap 19 can be folded against the edge 70a and maintain the sheath 7 against the plate 10, without the sheath 7 is returned to the rear or to the side by too strong a flow of air. Then, when the sheath 7 is held in place by the flap 19, the fan 17 is switched on and the air flow F1 of the fan 17, whose speed is greater than the air flow 21, makes it possible to pressurize the sheath 7 of way that the jaw 13 does not destabilize the sheath 7 during the cutting, folding and welding operations. The bag 7 then formed is ready for the introduction of the bread 3.
  • the flap 19 makes it possible to press the edge 70a of the bag 11 against the plate 10 so that loaves 3 having a flat base can be introduced more easily.
  • the bagging machine 1 comprises two lateral guides 23 pivotally mounted relative to the frame above the introductory conveyor belt 15, each around a vertical axis Z23 or Z23 'and perpendicular to the plate 10 and to the 'X-X axis'.
  • the free ends 231 of the lateral guides 23 penetrate into the sheath 7 when it is placed on the plate 10 and shaped by the fan 21.
  • the lateral guides 23 are returned by elastic elements such as springs 233 in a position where they are folded towards each other at 15.
  • elastic elements such as springs 233
  • the introduction conveyor belt 15 passes between the lateral guides 23, they are pushed back by the bread 3 and to the against the force of the springs 233, towards the outer edges 150 of the introduction treadmill 15, so that lateral edges 70b of the end 70 of the bag 11 are widened by the ends 231 of the guides 23, which are engaged in the bag 11, to facilitate the introduction of the bread 3.
  • the springs 233 have an adjustable stiffness, which makes it possible to modify the force necessary for their spacing, according to the weight of the breads 3 to be bagged and the forward speed of the introductory treadmill 15.
  • the springs 233 may be replaced by any type of elastic elements able to push the lateral guides 23 into their position of the figure 2 .
  • a second and a third embodiment of the invention are respectively represented on the Figures 10 to 12 , and 13 and 14 .
  • the elements common to the first embodiment bear the same references and operate in the same way. Only differences with respect to the embodiment of the Figures 1 to 9 are detailed below.
  • the machine 1 comprises a guide 25 movable in rotation about a parallel axis Y25 to the axis Y19, relative to the frame and placed above the plate 10 at the outlet of the conveyor belt 15.
  • the guide 25 is held by a not shown spring, which acts against the mass of the guide 25, in his position of the figure 10 , in which it does not spread the edge 70c of the bag 11 to limit the contact force with the bread 3 during its introduction into the bag 11.
  • the guide 25 When a bread 3 is conveyed by the conveyor belt 15, the guide 25 is pushed by the bread 3 so that a free end 251 of the guide 25, which enters the bag 11, spreads the edge 70c towards the outside of the bag 11 to facilitate the introduction of the bread 3 into the bag 11.
  • the edges 70a, 70b and 70c of the end 70 thereof are spaced and shaped as is represented on the figure 12 , which allows the insertion of a bread 3 flat base and whose cross section is non-circular.
  • the plate 10 comprises a first portion 10a located on the side of the jaw 13, and a second portion 10b located on the side of the introductory treadmill 15.
  • Each of the first and second parts 10a and 10b is provided with a movable cleat shown allowing the transfer of a bagged bread 3 to a side of the tray 10 perpendicular to the axis XX 'according to arrows F4 at the figure 9 .
  • the second portion 10b of the plate 10 is movable in translation relative to the first portion 10a along the axis X-X' , parallel to the direction of bagging.
  • the second portion 10b is moved along the axis XX 'and at least one metal plate 10c is folded between the parts 10a and 10b as shown in dashed lines on the figure 14 .
  • the length of the tray 10 can be adapted to the length of the breads 3 by the person who performs the bagging, which makes the bagging and transfer of bread after bagging more reliable.
  • the machine 1 may comprise one or more metal plates 10c that can be folded between the parts 10a and 10b depending on the length of the breads to be bagged. When short loaves are bagged, all the metal plates 10c are raised on one side of the tray 10 so that, as shown in FIG. figure 13 , the parts 10a and 10b are juxtaposed to each other along the axis X-X '.
  • the invention has been shown in connection with the use of a baguette type bread. It is in fact applicable with all types of bread and, in general, with any elongated food product, such as sausage or an article of pastry.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing And Processing Devices For Dough (AREA)
  • Package Closures (AREA)
  • Container Filling Or Packaging Operations (AREA)

Description

L'invention concerne une machine d'ensachage de produits alimentaires allongés, notamment de pains.The invention relates to a machine for bagging elongated food products, in particular breads.

L'invention concerne également un procédé d'ensachage d'un produit alimentaire allongé.The invention also relates to a method of bagging an elongate food product.

Pour l'ensachage de pains dans les centres commerciaux de grande distribution, il est connu, notamment de EP-B-0 779 209 , qui divulgue le préambule de la revendication 1, EP-B-1 028 054 ou EP-A-2 511 188 , d'utiliser une machine d'ensachage permettant d'emballer des pains dans des sachets formés à partir d'une gaine enroulée sur une bobine. Lors de l'ensachage du pain, la gaine est déroulée sur un plateau et mise en forme à l'aide d'un système de soufflerie afin que l'extrémité du pain puisse être insérée dans la gaine. Une fois la gaine maintenue en place par l'insertion du pain, la gaine est découpée, pliée et soudée afin de former un sachet dans lequel le pain peut ensuite être complètement inséré.For bagging breads in mass-market shopping centers, it is known to EP-B-0 779 209 which discloses the preamble of claim 1, EP-B-1 028 054 or EP-A-2 511 188 , to use a bagging machine for packaging breads in bags formed from a sheath wound on a reel. When bagging bread, the sheath is unwound on a tray and shaped by means of a blower system so that the end of the bread can be inserted into the sheath. Once the sheath is held in place by the insertion of the bread, the sheath is cut, folded and welded to form a bag in which the bread can then be completely inserted.

Une telle machine peut être améliorée. La forme de l'extrémité de la gaine est circulaire, et donc plutôt adaptée à l'introduction de pains à section sensiblement circulaire. Lors de l'introduction d'un pain présentant une base plate, celui-ci est susceptible d'être bloqué par les bords de la gaine. En outre, une fois le sachet formé par découpe, pliage et soudage de la gaine, il n'est plus maintenu en position, de sorte que la projection du pain au fond du sachet n'est pas complète.Such a machine can be improved. The shape of the end of the sheath is circular, and therefore rather adapted to the introduction of loaves of substantially circular section. When introducing a bread having a flat base, it is likely to be blocked by the edges of the sheath. In addition, once the bag formed by cutting, folding and welding of the sheath, it is no longer held in position, so that the projection of the bread at the bottom of the bag is not complete.

D'autres types de machines d'ensachage, connues notamment de US-B-3 508 379 , utilisent des piles de sachets préfabriqués aplatis et empilés les uns sur les autres. Une telle machine utilise un procédé complétement différent et nécessite la fabrication préalable des sachets.Other types of bagging machines, known in particular from US-B-3,508,379 , use piles of prefabricated bags that are flattened and stacked on top of one another. Such a machine uses a completely different process and requires the prior manufacture of the bags.

C'est à ces inconvénients qu'entend remédier l'invention en proposant une nouvelle machine d'ensachage de pains, permettant d'ensacher les pains de façon plus efficace que les machines de l'état de la technique, et autorisant l'ensachage d'un plus grand nombre de variétés de pains.It is these drawbacks that the invention intends to remedy by proposing a new bagging machine for breads, making it possible to bag breads more efficiently than the machines of the state of the art, and allowing bagging. more varieties of bread.

A cet effet, l'invention concerne une machine d'ensachage telle que définie dans la revendication 1.For this purpose, the invention relates to a bagging machine as defined in claim 1.

Grâce à l'invention, un bord de l'extrémité de la gaine est plaqué contre le plateau, ce qui permet à des pains à base plate d'être plus facilement insérés dans le sachet. En outre, comme la gaine est maintenue en position avant sa découpe, l'extrémité du pain n'a plus besoin d'être insérée dans la gaine avant la formation du sachet, et le pain peut ensuite être propulsé correctement au fond du sachet.Thanks to the invention, an edge of the end of the sheath is pressed against the tray, which allows flat-bottomed loaves to be more easily inserted into the bag. In addition, since the sheath is held in position before cutting, the end of the bread no longer needs to be inserted in the sheath before the formation of the bag, and the bread can then be propelled properly to the bottom of the bag.

Selon des aspects avantageux mais non obligatoires de l'invention, une telle machine d'ensachage peut incorporer une ou plusieurs des caractéristiques, prises dans toute combinaison techniquement admissible, définies dans les revendications 2 à 11.According to advantageous but non-mandatory aspects of the invention, such a bagging machine may incorporate one or more of the features, taken in any technically permissible combination, defined in claims 2 to 11.

L'invention concerne également un procédé d'ensachage tel que défini dans la revendication 12.The invention also relates to a bagging method as defined in claim 12.

L'invention sera mieux comprise et d'autres avantages de celle-ci apparaitront plus clairement à la lumière de la description qui va suivre d'une machine d'ensachage et d'un procédé d'ensachage conformes à son principe, faite à titre d'exemple non limitatif en référence aux dessins annexés dans lesquels :

  • la figure 1 est une vue schématique de côté d'une machine d'ensachage conforme à l'invention dans une première configuration d'utilisation,
  • la figure 2 est une vue de dessus de la machine d'ensachage de la figure 1,
  • la figure 3 est une vue similaire à la figure 1, la machine étant dans une deuxième configuration d'utilisation, un volet de blocage étant en position fermée,
  • la figure 4 est une vue similaire aux figures 1 et 3, montrant une phase de formation d'un sachet, la machine étant dans une troisième configuration d'utilisation,
  • la figure 5 est une vue similaire à la figure 1, lors d'une phase de transfert d'un pain, la machine étant dans une quatrième configuration d'utilisation,
  • la figure 6 est une vue similaire à la figure 1, d'une phase d'introduction d'un pain dans un sachet, la machine étant dans une cinquième configuration d'utilisation,
  • la figure 7 est une vue de dessus similaire à la figure 2, de la machine d'ensachage dans la configuration de sa figure 6,
  • la figure 8 est une vue similaire à la figure 1, lorsqu'un pain est introduit dans un sachet, la machine étant dans une sixième configuration d'utilisation,
  • la figure 9 est une vue de dessus similaire à la figure 2, montrant une phase de transfert d'un pain ensaché, la machine étant dans une septième configuration d'utilisation,
  • la figure 10 est une vue similaire à la figure 1, d'une machine d'ensachage conforme à un second mode de réalisation de l'invention, la machine étant dans une première configuration d'utilisation,
  • la figure 11 est une vue similaire à la figure 10, un pain étant introduit dans un sachet, la machine étant dans une deuxième configuration d'utilisation,
  • la figure 12 est une vue de face à plus grande échelle d'un pain en cours d'ensachage,
  • la figure 13 est une vue de dessus similaire à la figure 2, d'une machine d'ensachage conforme à un troisième mode de réalisation de l'invention, dans une première configuration,
  • la figure 14 est une vue similaire à la figure 13, dans une seconde configuration de la machine d'ensachage.
The invention will be better understood and other advantages thereof will appear more clearly in the light of the following description of a bagging machine and a bagging method in accordance with its principle, made as a non-limiting example with reference to the accompanying drawings in which:
  • the figure 1 is a schematic side view of a bagging machine according to the invention in a first configuration of use,
  • the figure 2 is a top view of the bagging machine of the figure 1 ,
  • the figure 3 is a view similar to the figure 1 the machine being in a second use configuration, a locking flap being in the closed position,
  • the figure 4 is a view similar to figures 1 and 3 , showing a phase of forming a bag, the machine being in a third configuration of use,
  • the figure 5 is a view similar to the figure 1 during a transfer phase of a roll, the machine being in a fourth configuration of use,
  • the figure 6 is a view similar to the figure 1 , a phase of introduction of a bread into a bag, the machine being in a fifth configuration of use,
  • the figure 7 is a top view similar to the figure 2 , of the bagging machine in the configuration of its figure 6 ,
  • the figure 8 is a view similar to the figure 1 when a bread is introduced into a bag, the machine being in a sixth use configuration,
  • the figure 9 is a top view similar to the figure 2 , showing a transfer phase of a bagged bread, the machine being in a seventh configuration of use,
  • the figure 10 is a view similar to the figure 1 of a bagging machine according to a second embodiment of the invention, the machine being in a first configuration of use,
  • the figure 11 is a view similar to the figure 10 , a bread being introduced into a bag, the machine being in a second configuration of use,
  • the figure 12 is a front view on a larger scale of a bread being bagged,
  • the figure 13 is a top view similar to the figure 2 of a bagging machine according to a third embodiment of the invention, in a first configuration,
  • the figure 14 is a view similar to the figure 13 in a second configuration of the bagging machine.

La machine 1 représentée aux figures 1 à 9 est prévue pour être installée, par exemple, dans le rayon boulangerie d'une grande surface. La machine 1 est destinée à l'ensachage de produits alimentaires allongés, notamment des pains.The machine 1 represented in Figures 1 to 9 is intended to be installed, for example, in the bakery department of a large area. The machine 1 is intended for bagging elongated food products, especially breads.

La machine d'ensachage 1 comprend un bâti qui n'est pas représenté pour la clarté des dessins. La machine 1 comprend une bobine 5 montée rotative par rapport au bâti et supportant une gaine tubulaire 7 enroulée. La machine 1 comprend un mécanisme d'entrainement de la gaine 7 à partir de la bobine 5, incluant des rouleaux 8 et 9, vers un plateau 10 sur lequel la gaine 7 est positionnée en vue de l'ensachage des pains 3.The bagging machine 1 comprises a frame which is not shown for the sake of clarity of the drawings. The machine 1 comprises a coil 5 rotatably mounted relative to the frame and supporting a tubular sheath 7 wound. The machine 1 comprises a drive mechanism of the sheath 7 from the reel 5, including rollers 8 and 9, to a plate 10 on which the sheath 7 is positioned for the bagging of the loaves 3.

Entre le plateau 10 et les rouleaux 8 et 9, la machine 1 comprend des moyens 13 de découpe et de soudage de la gaine 7 aptes à former des sachets 11 à partir de la gaine 7. Les moyens 13 de découpe et de soudage comprennent des mâchoires aptes à découper la gaine 7, des organes de pliage de la partie découpée à son extrémité et des moyens de chauffage aptes à souder la partie pliée à la partie non pliée de la gaine 7, selon une technique connue de EP-A-2 511 188 . Lorsque la gaine 7 est positionnée sur le plateau 10, elle se trouve en regard d'un tapis roulant d'introduction 15 permettant de diriger les pains 3, selon un axe longitudinal X-X', vers le plateau 10 et de les introduire dans la gaine 7 selon l'axe X-X', qui définit la direction d'ensachage.Between the plate 10 and the rollers 8 and 9, the machine 1 comprises means 13 for cutting and welding the sheath 7 able to form bags 11 from the sheath 7. The means 13 for cutting and welding comprise jaws adapted to cut the sheath 7, bending members of the portion cut at its end and heating means capable of welding the folded portion to the unfolded portion of the sheath 7, according to a known technique of EP-A-2 511 188 . When the sheath 7 is positioned on the plate 10, it is opposite an introduction treadmill 15 for directing the loaves 3, along a longitudinal axis X-X ', to the plate 10 and to introduce them into the sheath 7 along the axis X-X ', which defines the bagging direction.

La machine 1 comprend un système de soufflerie permettant de mettre en forme la gaine 7 lorsque celle-ci est positionnée sur le plateau 10 et les sachets 11 lorsque les pains 3 sont introduits. Le système de soufflerie comprend un ventilateur supérieur 17 disposé au-dessus du tapis roulant d'introduction 15, qui génère un flux d'air F1 selon une direction oblique par rapport au plateau 10 et à l'axe X-X', et qui permet de maintenir en forme le sachet 11 en le gonflant d'air, de manière qu'il présente une forme sensiblement cylindrique à section circulaire facilitant l'insertion d'un pain 3.The machine 1 comprises a blower system for shaping the sheath 7 when it is positioned on the plate 10 and the bags 11 when the loaves 3 are introduced. The blower system comprises an upper fan 17 disposed above the introductory conveyor belt 15, which generates an air flow F1 in a direction oblique with respect to the plate 10 and to the axis X-X ', and which makes it possible to keep the bag 11 in shape by inflating it with air, so that it has a substantially cylindrical shape with a circular section facilitating the insertion of a bread 3.

La machine d'ensachage 1 comprend, au débouché du tapis roulant d'introduction 15 sur le plateau 10, un organe de blocage adapté pour bloquer en position la gaine 7 contre le plateau 10 avant le découpage et le soudage de la gaine 7 par les moyens 13, pour former le sachet 11. L'organe de blocage comporte un volet 19 apte à se rabattre dans la gaine 7 lorsqu'elle est mise en forme par le système de soufflerie. Le volet 19 est mobile en rotation autour d'un axe Y19 perpendiculaire à l'axe X-X', entre une première position relevée représentée aux figures 1 et 2, et une seconde position rabattue, représentée aux figures 3 à 7, dans laquelle le volet 19 est rabattu sensiblement parallèlement au plateau 10. Dans sa seconde position, le volet 19 exerce une force F2 perpendiculaire au plateau 10 qui plaque un bord inférieur 70a d'une extrémité 70 de la gaine 7, ouverte du côté du tapis roulant d'introduction 15, contre le plateau 10, pour la maintenir en position.The bagging machine 1 comprises, at the outlet of the introducer conveyor 15 on the plate 10, a locking member adapted to lock the sheath 7 in position against the plate 10 before the cutting and welding of the sheath 7 by the means 13, to form the bag 11. The locking member comprises a flap 19 adapted to fall back into the sheath 7 when shaped by the blower system. The shutter 19 is rotatable about an axis Y19 perpendicular to the axis X-X ', between a first raised position shown in FIGS. Figures 1 and 2 , and a second folded position, represented in Figures 3 to 7 , in which the flap 19 is folded substantially parallel to the plate 10. In its second position, the flap 19 exerts a force F2 perpendicular to the plate 10 which plates a lower edge 70a of an end 70 of the sheath 7, open on the introductory treadmill 15, against the plate 10, to hold it in position.

Le passage du volet 19 entre sa première et sa seconde position, et vice-versa, est obtenu au moyen d'un vérin ou de tout autre actionneur mécanique, électrique ou pneumatique. Selon un mode de réalisation non représenté, dans sa première position, le volet 19 peut être rétracté sous le plateau 10.The passage of the flap 19 between its first and second position, and vice versa, is obtained by means of a jack or any other mechanical, electrical or pneumatic actuator. According to a not shown embodiment, in its first position, the flap 19 can be retracted under the plate 10.

Le volet 19 permet de former les sachets 11 avant l'introduction des pains 3, en mettant en oeuvre un procédé d'ensachage se déroulant de la façon suivante : la gaine 7 est dévidée de la bobine 5 sur le plateau 10. Ensuite, la gaine dévidée 7 est mise en forme à l'aide du système de soufflerie, tandis que le bord 70a de la gaine 7 est bloqué contre le plateau 10 à l'aide du volet 19. Une fois bloquée en position, la gaine 7 est coupée, pliée et soudée à l'aide des moyens 13 de découpe, de pliage et de soudage. Un sachet 11 est ainsi obtenu. Ensuite, les pains 3 sont insérés dans les sachets 11 ainsi formés, au moyen du tapis roulant d'introduction 15, alors que le sachet est maintenu en place sur le plateau 10 grâce au volet 19 qui le pince contre ce plateau.The flap 19 makes it possible to form the bags 11 before the introduction of the loaves 3, by implementing a bagging process taking place in the following manner: the sheath 7 is unwound from the reel 5 on the plate 10. The unwinding sheath 7 is shaped using the blower system, while the edge 70a of the sheath 7 is locked against the plate 10 by means of the shutter 19. Once locked in position, the sheath 7 is cut off folded and welded using means 13 for cutting, folding and welding. A bag 11 is thus obtained. Then, the loaves 3 are inserted into the bags 11 thus formed, by means of the introductory treadmill 15, while the bag is held in place on the plate 10 by the flap 19 which clamps against the tray.

Ce procédé permet de former les sachets 11 à partir de la gaine 7, avant l'introduction des pains 3. Le sachet 11 ainsi formé étant maintenu en position par le volet 19 selon l'axe X-X', l'insertion des pains 3 est facilitée, et le positionnement correct des pains 3 au fond des sachets 11 est obtenu.This method makes it possible to form the bags 11 from the sheath 7, before the introduction of the loaves 3. The bag 11 thus formed being held in position by the flap 19 along the axis X-X ', the insertion of the loaves 3 is facilitated, and the correct positioning of the loaves 3 at the bottom of the bags 11 is obtained.

Afin d'éviter que le flux d'air F1 généré par le ventilateur 17 ne perturbe la mise en position de la gaine 7 sur le plateau 10 après son dévidement de la bobine 5, le système de soufflerie de la machine 1 comprend un second ventilateur 21, soufflant à partir d'un espace situé sous le tapis roulant d'introduction 15, et qui génère un flux d'air F3 sensiblement parallèle au plateau 10, et dont la vitesse est inférieure à la vitesse du flux d'air F1 générée par le premier ventilateur 17. Lors de la mise en place de la gaine 7 sur le plateau 10, le ventilateur 17 est désactivé et le ventilateur 21 est activé. La vitesse du flux d'air F3 est suffisante pour ouvrir la gaine 7 de manière que le volet 19 puisse être rabattu contre le bord 70a et maintienne la gaine 7 contre le plateau 10, sans que la gaine 7 ne soit renvoyée vers l'arrière ou vers le côté par un flux d'air trop puissant. Ensuite, lorsque la gaine 7 est maintenue en place par le volet 19, le ventilateur 17 est enclenché et le flux d'air F1 du ventilateur 17, dont la vitesse est supérieure au flux d'air 21, permet de mettre en pression la gaine 7 de manière que la machoire 13 ne déstabilise pas la gaine 7 durant les opérations de découpe, pliage et soudage. Le sachet 7 alors formé est prêt à l'introduction du pain 3.In order to prevent the flow of air F1 generated by the fan 17 from disturbing the positioning of the sheath 7 on the plate 10 after unwinding the coil 5, the blower system of the machine 1 comprises a second fan 21, blowing from a space located under the introductory conveyor belt 15, and which generates a flow of air F3 substantially parallel to the plate 10, and whose speed is less than the speed of the air flow F1 generated by the first fan 17. When placing the sheath 7 on the plate 10, the fan 17 is deactivated and the fan 21 is activated. The speed of the air flow F3 is sufficient to open the sheath 7 so that the flap 19 can be folded against the edge 70a and maintain the sheath 7 against the plate 10, without the sheath 7 is returned to the rear or to the side by too strong a flow of air. Then, when the sheath 7 is held in place by the flap 19, the fan 17 is switched on and the air flow F1 of the fan 17, whose speed is greater than the air flow 21, makes it possible to pressurize the sheath 7 of way that the jaw 13 does not destabilize the sheath 7 during the cutting, folding and welding operations. The bag 7 then formed is ready for the introduction of the bread 3.

Le volet 19 permet de plaquer le bord 70a du sachet 11 contre le plateau 10 afin que des pains 3 ayant une base plate puissent être introduits plus facilement.The flap 19 makes it possible to press the edge 70a of the bag 11 against the plate 10 so that loaves 3 having a flat base can be introduced more easily.

Lorsque des pains 3 de section carrée doivent être introduits, il est nécessaire d'écarter les bords du sachet 11 pour éviter que les coins du pain 3 ne heurtent les bords du sachet 11 et ne froissent celui-ci. A cet effet, la machine d'ensachage 1 comporte deux guides latéraux 23 montés pivotants par rapport au bâti au dessus du tapis roulant d'introduction 15, chacun autour d'un axe Z23 ou Z23' vertical et perpendiculaire au plateau 10 et à l'axe X-X'. Les extrémités libres 231 des guides latéraux 23 pénètrent dans la gaine 7 lorsque celle-ci est mise en place sur le plateau 10 et mise en forme par le ventilateur 21.When breads 3 of square section must be introduced, it is necessary to spread the edges of the bag 11 to prevent the corners of the bread 3 does not hit the edges of the bag 11 and crease it. For this purpose, the bagging machine 1 comprises two lateral guides 23 pivotally mounted relative to the frame above the introductory conveyor belt 15, each around a vertical axis Z23 or Z23 'and perpendicular to the plate 10 and to the 'X-X axis'. The free ends 231 of the lateral guides 23 penetrate into the sheath 7 when it is placed on the plate 10 and shaped by the fan 21.

Comme cela est représenté à la figure 5, avant le transfert d'un pain 3 sur le tapis roulant d'introduction 15, les guides latéraux 23 sont rappelés, par des éléments élastiques tels que des ressorts 233, dans une position où ils sont rabattus l'un vers l'autre au milieu du tapis roulant d'introduction 15. Lorsqu'un pain 3 déplacé selon l'axe X-X' par le tapis roulant d'introduction 15 passe entre les guides latéraux 23, ceux-ci sont repoussés, par le pain 3 et à l'encontre de l'effort des ressorts 233, vers les bords extérieurs 150 du tapis roulant d'introduction 15, de manière que des bords latéraux 70b de l'extrémité 70 du sachet 11 sont élargis par les extrémités 231 des guides 23, qui sont engagés dans le sachet 11, pour faciliter l'introduction du pain 3.As shown in figure 5 before the transfer of a roll 3 onto the introducer conveyor 15, the lateral guides 23 are returned by elastic elements such as springs 233 in a position where they are folded towards each other at 15. When a bread 3 moved along the axis XX 'by the introduction conveyor belt 15 passes between the lateral guides 23, they are pushed back by the bread 3 and to the against the force of the springs 233, towards the outer edges 150 of the introduction treadmill 15, so that lateral edges 70b of the end 70 of the bag 11 are widened by the ends 231 of the guides 23, which are engaged in the bag 11, to facilitate the introduction of the bread 3.

Une fois que le pain 3 a été inséré dans le sachet 11, les guides latéraux 23 sont à nouveau repoussés dans leur position de la figure 2 sous l'action des ressorts 233.Once the bread 3 has been inserted into the bag 11, the lateral guides 23 are again pushed back into their position of the figure 2 under the action of the springs 233.

Les ressorts 233 ont une raideur réglable, ce qui permet de modifier la force nécessaire à leur écartement, en fonction du poids des pains 3 à ensacher et de la vitesse d'avancement du tapis roulant d'introduction 15.The springs 233 have an adjustable stiffness, which makes it possible to modify the force necessary for their spacing, according to the weight of the breads 3 to be bagged and the forward speed of the introductory treadmill 15.

En variante, les ressorts 233 peuvent être remplacés par tout type d'éléments élastiques aptes à repousser les guides latéraux 23 dans leur position de la figure 2.As a variant, the springs 233 may be replaced by any type of elastic elements able to push the lateral guides 23 into their position of the figure 2 .

Un deuxième et un troisième modes de réalisation de l'invention sont respectivement représentés sur les figures 10 à 12, et 13 et 14. Dans ces modes de réalisation, les éléments communs au premier mode de réalisation portent les mêmes références et fonctionnent de la même manière. Seules les différences par rapport au mode de réalisation des figures 1 à 9 sont détaillées ci-après.A second and a third embodiment of the invention are respectively represented on the Figures 10 to 12 , and 13 and 14 . In these embodiments, the elements common to the first embodiment bear the same references and operate in the same way. Only differences with respect to the embodiment of the Figures 1 to 9 are detailed below.

Dans le mode de réalisation des figures 10 à 12, pour s'assurer que la partie supérieure des pains 3 n'entre pas en contact avec un bord supérieur 70c des sachets 11 lors de leur introduction, la machine 1 comprend un guide 25 mobile en rotation, autour d'un axe Y25 parallèle à l'axe Y19, par rapport au bâti et placé au dessus du plateau 10 au débouché du tapis roulant d'introduction 15. Le guide 25 est maintenu par un ressort non représenté, qui agit à l'encontre de la masse du guide 25, dans sa position de la figure 10, dans laquelle il n'écarte pas le bord 70c du sachet 11 afin de limiter l'effort de contact avec le pain 3 durant son introduction dans le sachet 11. Lorsqu'un pain 3 est acheminé par le tapis roulant 15, le guide 25 est repoussé par le pain 3 de manière qu'une extrémité libre 251 du guide 25, qui pénètre dans le sachet 11, écarte le bord 70c vers l'extérieur du sachet 11 afin de faciliter l'introduction du pain 3 dans le sachet 11.In the embodiment of Figures 10 to 12 , to ensure that the upper part of the loaves 3 does not come into contact with an upper edge 70c of the bags 11 during their introduction, the machine 1 comprises a guide 25 movable in rotation about a parallel axis Y25 to the axis Y19, relative to the frame and placed above the plate 10 at the outlet of the conveyor belt 15. The guide 25 is held by a not shown spring, which acts against the mass of the guide 25, in his position of the figure 10 , in which it does not spread the edge 70c of the bag 11 to limit the contact force with the bread 3 during its introduction into the bag 11. When a bread 3 is conveyed by the conveyor belt 15, the guide 25 is pushed by the bread 3 so that a free end 251 of the guide 25, which enters the bag 11, spreads the edge 70c towards the outside of the bag 11 to facilitate the introduction of the bread 3 into the bag 11.

Grâce au volet 19, aux guides latéraux 23 et au guide 25, lorsque le pain 3 est introduit dans le sachet 11, les bords 70a, 70b et 70c de l'extrémité 70 de celui-ci sont écartés et mis en forme comme cela est représenté sur la figure 12, ce qui permet l'insertion d'un pain 3 à base plate et dont la section transversale est non-circulaire.With the flap 19, the lateral guides 23 and the guide 25, when the bread 3 is introduced into the bag 11, the edges 70a, 70b and 70c of the end 70 thereof are spaced and shaped as is represented on the figure 12 , which allows the insertion of a bread 3 flat base and whose cross section is non-circular.

Dans le mode de réalisation des figures 13 et 14, le plateau 10 comprend une première partie 10a située du côté de la mâchoire 13, et une seconde partie 10b située du côté du tapis roulant d'introduction 15. Chacune des première et seconde parties 10a et 10b est munie d'un taquet mobile non représenté permettant le transfert d'un pain 3 ensaché vers un côté du plateau 10 perpendiculairement à l'axe X-X' selon les flèches F4 à la figure 9. Afin d'adapter la longueur selon l'axe X-X', du plateau 10 à différentes longueurs de pains, la seconde partie 10b du plateau 10 est mobile en translation par rapport à la première partie 10a selon l'axe X-X', parallèlement à la direction d'ensachage.In the embodiment of Figures 13 and 14 , the plate 10 comprises a first portion 10a located on the side of the jaw 13, and a second portion 10b located on the side of the introductory treadmill 15. Each of the first and second parts 10a and 10b is provided with a movable cleat shown allowing the transfer of a bagged bread 3 to a side of the tray 10 perpendicular to the axis XX 'according to arrows F4 at the figure 9 . In order to adapt the length along the axis X-X 'of the plate 10 to different lengths of bread, the second portion 10b of the plate 10 is movable in translation relative to the first portion 10a along the axis X-X' , parallel to the direction of bagging.

En fonction de la longueur du pain 3 à ensacher, la seconde partie 10b est déplacée selon l'axe X-X' et au moins une plaque métallique 10c est rabattue entre les parties 10a et 10b comme cela est représenté en pointillés sur la figure 14. Ainsi, la longueur du plateau 10 peut être adaptée à la longueur des pains 3 par la personne qui effectue les ensachages, ce qui fiabilise les opérations d'ensachage et de transfert du pain après ensachage.Depending on the length of the bread 3 to bag, the second portion 10b is moved along the axis XX 'and at least one metal plate 10c is folded between the parts 10a and 10b as shown in dashed lines on the figure 14 . Thus, the length of the tray 10 can be adapted to the length of the breads 3 by the person who performs the bagging, which makes the bagging and transfer of bread after bagging more reliable.

La machine 1 peut comprendre une ou plusieurs plaques métalliques 10c pouvant être rabattues entre les parties 10a et 10b en fonction de la longueur des pains à ensacher. Lorsque des pains courts sont ensachés, toutes les plaques métalliques 10c sont relevées sur un côté du plateau 10 de manière que, comme représenté à la figure 13, les parties 10a et 10b soient juxtaposées l'une à l'autre selon l'axe X-X'.The machine 1 may comprise one or more metal plates 10c that can be folded between the parts 10a and 10b depending on the length of the breads to be bagged. When short loaves are bagged, all the metal plates 10c are raised on one side of the tray 10 so that, as shown in FIG. figure 13 , the parts 10a and 10b are juxtaposed to each other along the axis X-X '.

L'invention a été représentée dans le cadre de l'utilisation d'un pain de type baguette. Elle est en fait applicable avec tout type de pain et, de façon générale, avec tout produit alimentaire allongé, tel que du saucisson ou un article de viennoiserie.The invention has been shown in connection with the use of a baguette type bread. It is in fact applicable with all types of bread and, in general, with any elongated food product, such as sausage or an article of pastry.

Les caractéristiques des différents modes de réalisation et variantes décrits ci-dessus peuvent être combinées pour former de nouveaux modes de réalisation de l'invention.The features of the various embodiments and variants described above can be combined to form new embodiments of the invention.

Claims (12)

  1. Machine for bagging (1) long food products (3), in particular loaves of bread, wherein this machine comprises:
    • a rotary reel (5) comprising a wound tubular sleeve (7),
    • a mechanism for drawing (8, 9) the sleeve (7) from the reel (5),
    • folding and welding means (13) capable of forming bags (11) from the sleeve (7),
    • a tray (10), on which the unwound sleeve (7) is positioned,
    • a blower system (17, 21) for shaping the sleeve (7),
    • a conveyor (15) for feeding a long food product (3) into the sleeve (7),
    and this machine (1) is characterised in that at the discharge point of the feed conveyor (15) onto the tray (10) it comprises a locking element (19) arranged to lock an edge (70a) of an end (70) of the sleeve (7) that is open on the side of the feed conveyor (15) in position against the tray (10) before and during the formation of the bag (11) and during the insertion of a long food product (3).
  2. Machine according to claim 1, characterised in that the locking element (19) is rotatably movable between a first raised position and a second lowered position approximately parallel to the tray (10), in which the locking element (19) exerts a force perpendicular (F2) to the tray (10) that presses the edge (70a) of the end (70) of the sleeve (7) against the tray (10).
  3. Machine according to claim 2, characterised in that in its first position the locking element (19) is retracted below the tray (10).
  4. Machine according to one of the preceding claims, characterised in that the locking element comprises a flap (19), which is rotatably movable around an axis (Y19) parallel to the tray (10) and perpendicular to a bagging direction (X-X') of the products.
  5. Machine according to one of the preceding claims, characterised in that it comprises lateral guides (23) mounted to pivot in relation to a support structure of the machine (1) above the feed conveyor (15), wherein ends (231) of the lateral guides (23) enter the sleeve (7) when this is positioned on the tray (10) and shaped, and in that the lateral guides (23) are provided to be spread apart by the passage of the long food product (3) on the feed conveyor (15) and to widen side edges (70b) of the end (70) of the bag (11) during the insertion of the long food product (3).
  6. Machine according to claim 5, characterised in that the lateral guides (23) are returned to a position folded towards one another at the centre of the feed conveyor (15) by elastic elements (233).
  7. Machine according to one of the preceding claims, characterised in that it comprises a guide (25), which is rotatably movable in relation to a support structure of the machine (1) and placed above the tray (10) at the discharge point of the feed conveyor (15) and is capable of being forced back by the food product (3) during its passage on the feed conveyor (15) so that a free end (251) of the guide (25) entering the sleeve (7) spreads apart an upper edge (70c) of the end (70) of the sleeve (7).
  8. Machine according to one of the preceding claims, characterised in that the blower system comprises
    • a first fan (17) generating a flow of air (F1) in an oblique direction in relation to the tray (10) from a high part of the machine in the direction of the tray (10), and
    • a second fan (21) that generates a flow of air (F3) approximately parallel to the tray (10) from a space located below the feed conveyor (15).
  9. Machine according to claim 8, characterised in that the first fan (17) is arranged to be deactivated when the sleeve (7) is positioned on the tray (10) and set in operation before the insertion of a long food product (3) when the sleeve (7) is held in place by the locking element (19), and in that the rate of the air flow (F3) generated by the second fan (21) is lower than the rate of the air flow (F1) generated by the first fan (17) when this is set in operation.
  10. Machine according to one of the preceding claims, characterised in that the tray (10) comprises a first part (10a) located on the side of the welding and cutting means (13) and a second part (10b) located on the side of the feed conveyor (15), and each of the first (10a) and second (10b) parts are fitted with a movable transfer stop of the bagged food product (3), wherein the second part (10b) is movable in relation to the first part (10a) in a longitudinal direction (X-X') of the machine (1) corresponding to the bagging direction.
  11. Machine according to claim 10, characterised in that the tray (10) comprises at least one movable plate (10c) arranged to be placed between the first and second parts (10a, 10b) of the tray (10).
  12. Process for bagging a long food product (3) with a machine (1) comprising:
    • a rotary reel (5) comprising a wound tubular sleeve (7),
    • a mechanism for driving (8, 9) the sleeve (7) from the reel (5),
    • folding and welding means (13) suitable for forming bags (11) from the sleeve (7),
    • a tray (10), on which the unwound sleeve (7) is positioned,
    • a blower system (17, 21) for shaping the sleeve (7),
    • a conveyor (15) for feeding a long food product (3) into the sleeve (7),
    wherein this process comprises successive steps consisting of:
    a) unwinding the sleeve (7) from the reel (5),
    b) shaping the unwound sleeve (7) using a blower system (17, 21),
    c) forming a bag (11) by using folding, cutting and welding means (13),
    characterised in that the process comprises a step d) prior to step c) and subsequent to step b) consisting of locking an edge (70a) of an end (70) of the sleeve (7) that is open on the side of the feed conveyor (15) in position against the tray (10) by means of a locking element (19), wherein the edge (70a) remains locked in position during step c) and during the insertion of a long food product (3).
EP14188455.1A 2013-10-11 2014-10-10 Machine for bagging food products and method for bagging food products Active EP2860117B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1359893A FR3011823B1 (en) 2013-10-11 2013-10-11 FOOD STACKING MACHINE AND METHOD OF LOADING FOOD PRODUCTS

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EP2860117A1 EP2860117A1 (en) 2015-04-15
EP2860117B1 true EP2860117B1 (en) 2017-06-07

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EP (1) EP2860117B1 (en)
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FR3088910B1 (en) 2018-11-26 2021-01-22 Saint Andre Plastique Machine for bagging articles and method of bagging using such a machine
FR3088911B1 (en) 2018-11-26 2021-01-22 Saint Andre Plastique Machine for bagging articles and method of bagging using such a machine
CN112224516B (en) * 2020-10-16 2022-05-10 济南沃德爱礼食品有限公司 Automatic baling equipment is used in small bread processing

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FR3011823A1 (en) 2015-04-17
ES2632112T3 (en) 2017-09-11
EP2860117A1 (en) 2015-04-15

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