EP3501813B1 - Verfahren und maschine zur herstellung von verpackungen, so erhaltene verpackungen - Google Patents

Verfahren und maschine zur herstellung von verpackungen, so erhaltene verpackungen Download PDF

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Publication number
EP3501813B1
EP3501813B1 EP18215484.9A EP18215484A EP3501813B1 EP 3501813 B1 EP3501813 B1 EP 3501813B1 EP 18215484 A EP18215484 A EP 18215484A EP 3501813 B1 EP3501813 B1 EP 3501813B1
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EP
European Patent Office
Prior art keywords
packaging
thermoforming
film
sheets
container
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EP18215484.9A
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English (en)
French (fr)
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EP3501813A3 (de
EP3501813A2 (de
Inventor
François Guillin
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Groupe Guillin SA
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Groupe Guillin SA
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Publication of EP3501813A3 publication Critical patent/EP3501813A3/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/02—Feeding or positioning sheets, blanks or webs
    • B31B50/04—Feeding sheets or blanks
    • B31B50/06—Feeding sheets or blanks from stacks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/02—Feeding or positioning sheets, blanks or webs
    • B31B50/04—Feeding sheets or blanks
    • B31B50/07—Feeding sheets or blanks by air pressure or suction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/26—Folding sheets, blanks or webs
    • B31B50/44—Folding sheets, blanks or webs by plungers moving through folding dies
    • B31B50/46—Folding sheets, blanks or webs by plungers moving through folding dies and interconnecting side walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/20—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form
    • B65D5/2038—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form at least two opposed folded-up portions having a non-rectangular shape
    • B65D5/2047—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form at least two opposed folded-up portions having a non-rectangular shape trapezoidal, e.g. to form a body with diverging side walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/56—Linings or internal coatings, e.g. pre-formed trays provided with a blow- or thermoformed layer
    • B65D5/563—Laminated linings; Coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2105/00—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
    • B31B2105/001—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs made from laminated webs, e.g. including laminating the webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2120/00—Construction of rigid or semi-rigid containers
    • B31B2120/40—Construction of rigid or semi-rigid containers lined or internally reinforced
    • B31B2120/402—Construction of rigid or semi-rigid containers lined or internally reinforced by applying a liner to already made boxes, e.g. opening or distending of the liner or the box
    • B31B2120/404—Construction of rigid or semi-rigid containers lined or internally reinforced by applying a liner to already made boxes, e.g. opening or distending of the liner or the box using vacuum or pressure means to force the liner against the wall

Definitions

  • the present invention is in the field of packaging, and more specifically in that of packaging whose containers are cardboard, but which require sealing, obtained by subsequent thermoforming of a plastic film inside the container.
  • thermoforming unit which forms the film at temperature, in other words gives it a hot shape to adapt it to volumes of cardboard containers themselves preformed and deposited prior to the forming of the film in the mold in order to form the packaging.
  • thermoforming unit In practice, feeding the thermoforming unit with cartons results in a fairly significant reduction in production rates, due to the need to process these sheets upstream of thermoforming. This is, for example, what results from the document EP 3 141 373 , in which the necessary synchronization between the different manufacturing phases is implemented in a particular way which does not make it possible to accelerate the production rates.
  • Document WO 2009/138786 A2 discloses a method and a machine according to the preamble of claims 1 and 17.
  • the present invention aims to optimize these rates by proposing an overall design aimed at synchronizing the two main functional chains respectively for supplying containers and thermoforming, reviewed with a view to this optimization.
  • the method comprises a preforming of the sheets before loading into each thermoforming cavity.
  • the loading requires a first transformation of shape, a transition from a two-dimensional state to a three-dimensional state of the pre-cut and pre-grooved cardboard sheet, or even perforated if necessary, using strictly mechanical successive stages resulting in practice in the limitation of permitted speeds.
  • the transfer of each sheet is carried out by activating mechanical or robotic mobile intermediate transfer means in coordination with the respective movements of the recovery means and the supply means, said transfer means also being provided with means grasping/immobilization of each sheet.
  • the recovery means move between two positions respectively for gripping at least one sheet from a stack and for transferring
  • the transfer means are movable between a position for picking up each sheet cardboard from the recovery means and a transfer position
  • the supply means move between a position for receiving each sheet from the transfer means and a position for supplying a thermoforming mold cavity.
  • the preforming of the cardboard sheets is carried out in practice by correspondence of dimensions and orientation of surfaces on the one hand of gripping/immobilization means in the supply means and on the other hand in the imprint of the thermoforming mold, then allowing volume matching upon mutual insertion.
  • the respective surfaces of the cavities and of the supply means corresponding respectively to the bottom and to the side walls of the packaging can be brought into correspondence and kept in contact sequentially, by suction obtained by generating a depression at predetermined places. cavity walls.
  • a step of supplying at least one mold cavity by a packaging and a step of thermoforming another preformed packaging inserted into a cavity are carried out almost simultaneously, a tilting mold comprising on its circumference at least one mold cavity being driven sequentially according to at least two distinct rotary positions, said positions defining an operating time step.
  • the film is continuous and moved in successive steps, this time dimensional, between storage means, at the entrance to the machine, and a thermoforming stage, at least one heating stage placed upstream of the thermoforming stage the along a dimensional step being activated continuously.
  • This heating aims to prepare and optimize the thermoforming which induces a deformation of the plastic film aided by a softening of the plastic.
  • the film chosen has a thickness much less than that of the films usually used, which consequently has a thermal inertia which is also less than the latter. It therefore cools quickly and, due to the existence of at least one vacuum step to allow adaptation to different mold sizes (see below), it may no longer be hot enough to be thermoformed in good conditions.
  • the method can comprise two heating steps, including an optional step operating at a dimensional step when empty, if necessary, that is to say if the sizes of the molds so require.
  • Heating of the cavities receiving the preformed packages is more preferably carried out, in order to activate an adhesive layer that the film has, an additional layer which has the function of achieving complete fastening of the film in the carton.
  • This connection plays a role in the mechanical strength of the assembly, due to a shrinkage effect on the internal walls of the packaging.
  • the shrinkage effect makes it possible, for example, to stress the skirts or folded peripheral edges with which packaging to give them a potentially interesting elastic return effect when a cover is provided, to ensure its elastic fixing by clipping to the packaging.
  • the packaging affected by the process obviously does not necessarily include such folded peripheral skirts, which are generally the prerogative of packaging with a separate lid.
  • the method also applies to sealed packaging by sealing a film on the peripheral edges, according to the example given below.
  • the method includes the generation of a depression during the thermoforming of the film, in connection with the position of the orifices made in the container.
  • the orifices of the indentations through which the pressure difference is applied to the packaging can be positioned in the vicinity of the holes in the container, for example the drilled lines in dotted lines, or the holes for fixing a lid in the edges, etc. ., in the case where a cover is provided.
  • a peripheral cutting of the containers can be provided after the thermoforming operation, either directly at the periphery of the mold, according to an integrated configuration, or separately.
  • thermoformable film, mono material or complex having a thickness of between 80 ⁇ m and 200 ⁇ m, c that is to say significantly less than in conventional methods of thermoforming applied to this context, as pointed out before.
  • the film used intended to hug the inside faces of the cartons and give them an aesthetically very accomplished appearance, with in particular the possibility of preserving the walls with sharp angles, comprises on one of its faces a layer of hot-activatable adhesive activated by the means of specific heating of the molds mentioned above.
  • the packaging of the invention further comprises peripheral flanges extending each side wall and folding outwards towards them. It is this outward folding which is thwarted by the shrinkage of the film, and produces the contrary elastic force which has been discussed.
  • the adjacent ends of said flanges are not in contact with each other and are connected by a portion of film provided with a diagonal fold, which results from the cutout applied after thermoforming, the fold itself being obtained by the imprints of the molds during thermoforming. Said diagonal fold is oriented, following molding, so that the portion of film between the flanges can become practically invisible when these are folded towards the side walls, if the fold is oriented downwards.
  • This version corresponds, for example, to packaging with a separate lid.
  • the adjacent ends of the flanges can be butted, said flanges then forming a continuous peripheral border.
  • Such a version is for example used when the packaging is closed by a heat-sealed plastic film lid on said peripheral edge, which is then preferably flat or substantially flat.
  • the cardboard for the production of the container is chosen porous, so as to facilitate the suction of the film in contact with the internal faces of said container during the suction phases.
  • the fold lines of the pre-cut cardboard sheets for the production of the container also include pierced dotted lines and incised lines halfway down the flesh which help with folding, in particular during the preforming and forming phases in the mold cavities. . Thus, for example, it is the lines which delimit the bottom of the container which can be the subject of a piercing in dotted lines.
  • the flanges comprise at least one orifice for fixing a cover, the portion of film which covers each orifice, like all the rest of the container on one side, then being shaped like a bubble projecting towards the side walls of the container, so as not to not oppose the insertion of a lug protruding from the cover, if necessary.
  • These bubbles are obtained during the thermoforming phase, by suction of the film through the orifices, which is produced by the existence of a depression at least at certain places of the walls of the cavity. This depression can moreover be applied in a locally targeted manner, depending on the positioning of the orifices of the mold conveying the depression.
  • thermoforming unit This structure and this kinematics for loading cartons are particularly adapted to the operation of the thermoforming unit, and respects practical considerations of interconnection with it. Due to the need already mentioned to guarantee the position of each sheet during each of the phases of their transfer to the preforming/loading/thermoforming stages, the mobile transfer means are also provided with means for gripping/immobilizing each sheet .
  • the recovery means comprise at least one sheet recovery tray
  • the transfer means comprise at least one sheet transfer plate
  • the supply means comprise at least one sheet supply platen, in equal numbers, these flat-looking structures being suitable for conveying the two-dimensional cardboard sheets to be transformed into three-dimensional cartonettes.
  • the recovery means, the transfer means, the supply means respectively comprise a number of recovery plates, transfer plates and supply plates equal to the number of stacks of sheets.
  • the means for gripping/immobilizing the sheets on each recovery tray, each mobile transfer plate and each supply plate respectively consist of suction cups, which constitute a solution suitable both for immobilizing and for fixing to the when the leaves are taken from their previous location in the chain.
  • Each supply plate also comprises a shape in relief having inclined borders surrounding a central zone, said central zone and said borders being dimensioned according to the creases and cutouts of the sheets, in negative of the recess of the imprint of the corresponding molds , and playing a role in the preforming of cartons before thermoforming.
  • the central zone of the form in relief is retractable against springs, in order to implement the sequential plating of the cardboard pre-cuts at the bottom of the indentations.
  • the bottom of the cavities comprises orifices connected to first means for generating a depression and the inclined edges of the cavities comprise orifices connected to second means for generating a depression.
  • These orifices linked to means of generating a depression are, as mentioned above, placed in such a way that they can also help during the thermoforming operation, to press the film being thermoformed against the inner face of the containers.
  • the mold cavities are, according to a possible configuration particularly suited to increasing production rates, made in a tilting mould, that is to say a rotating mold between two positions which is used in the machine of the invention, not only for thermoforming the films in the cartons and removing the packaging thus obtained, but also for loading the molds in conjunction with the loading robot.
  • This characteristic can be seen as constituting a appreciable factor in optimizing the automation of packaging manufacturing.
  • the machine of the invention comprises, for the purpose of continuous supply of plastic film, a film drive stage consisting of pin chains located at the level of the two lateral edges of the film, a roller made of elastomeric material being placed on each side. at the inlets of the continuous film, which is for example stored on a roll allowing the successive unwinding of a certain quantity of film, by dimensional steps compatible with the automation process.
  • a film drive stage consisting of pin chains located at the level of the two lateral edges of the film, a roller made of elastomeric material being placed on each side. at the inlets of the continuous film, which is for example stored on a roll allowing the successive unwinding of a certain quantity of film, by dimensional steps compatible with the automation process.
  • the film is particularly thin and that it comprises a layer of adhesive material, these specific characteristics having consequences on its processing in the machine.
  • a pin drive proves, as such, to be inadequate because the pins do not pass through the film. This is the reason why a roller is added at the entrance, at the level of which the perforation takes place, allowing the drive downstream. The film is wedged between the rollers and the pins, allowing piercing due to the support surface on which the film rests.
  • the machine of the invention comprises, for supply purposes continuous plastic film, a film drive stage consisting of clamp chains located at the two lateral edges of the film.
  • the machine further comprises an additional heating unit placed immediately upstream of the thermoforming stage.
  • an additional heating unit placed immediately upstream of the thermoforming stage. This also results from the particular nature of the film.
  • the film is advanced in successive steps. It is customary to position a heating device (for example infrared) above and below a portion of film corresponding to a dimensional pitch. This heated portion then advances one step to be replaced by another. All displacements are therefore multiples of an integer number of pitches, and depend in particular on the dimensions of the thermoforming mold.
  • the heating stage precedes thermoforming.
  • the thermoforming mold comprises a part mounted on a holding structure, in this case for example a tilting mold, and a mobile part mounted on another structure which translates towards the first. These structures are larger in size than the molds, to enable different sizes of molds to be adapted thereto. It is therefore necessary to provide at least one intermediate vacuum step between the heating stage and the thermoforming stage.
  • an additional removable heating unit has been added, making it possible to reduce the number of empty steps as much as possible.
  • each cavity of the mold comprises its own thermoregulated heating means. These generate a suitable mold temperature whereas in principle, with usual films with a thickness provided between 200 ⁇ m and 800 ⁇ m, an unheated mold is used, which makes it possible to freeze the material more quickly. But in the invention, it is necessary to activate the adhesive layer intended to fix the film, and which therefore interfaces between the plastic film and the cardboard, by transferring - at the time of thermoforming - heat through the cardboard.
  • the machine of the invention preferably also comprises means for peripheral cutting of the containers, said cutting means acting on the periphery of the cavities of the molds or being actuated separately.
  • said cutting means may be a classic punch/die cut, separated from the rest, making it possible to simplify the tooling, thus lowering costs, increasing production rates, and, since the film is already attached to the cardboard, allowing a perfectly concentric cut.
  • the blank 1 has a central zone constituting the bottom 2 of the carton, and trapezoidal side zones 3, 4, 5, 6 delimiting the side walls of the container. These walls 3 to 6 are extended by flanges 7 to 10, from which they are separated by creases 11, 11' obtained by mid-flesh incision.
  • the edges 12, 12' of separation between the bottom 2 and the side walls 3 to 6 are incised with dotted lines, so as to constitute orifices used during the suction phases, for example to help press the plastic film against the faces interior of the container.
  • the flanges 7 to 10 each comprise orifices 13, 14 provided for fixing a cover as shown in figures 4 and 5 . All these incisions, through or on the middle of the flesh, of course help in folding the sections, with a view to preforming or forming the cardboard.
  • the film in addition to covering the inner faces of the bottom 2 and the side walls 3 to 6, as well as the upper faces of the flanges in the extension of the others, has portions of angle 15 between the edges 7 to 10, as it appears in picture 2 , giving the package a continuous peripheral skirt.
  • These portions of film 15 are shaped with a diagonal fold 16, obtained as mentioned before during the molding in the thermoforming phase. This fold 16 allows a natural folding in one direction (down) or the other (up). In the representation of picture 3 , the corner portion 15 is folded down, and therefore becomes invisible.
  • the flanges 7 to 10 are over-open, to compensate for the shrinkage effect of the film, according to a position which is for example that of the picture 3 , further resulting in the mechanical effect of outward return of the rims, mentioned above and which facilitates the mechanical clipping of the cover 17 (see below). figures 4 and 5 ).
  • the peripheral skirt consisting of flanges 7 to 10 connected by the corner portions 15 of the film is the subject of a cutting operation after thermoforming, which obeys the constraints of punch/die cutting systems.
  • lugs 18 projecting inwardly from the peripheral skirt 19 of said lid 17 are provided at the level of the orifices 13, 14 made in the flanges 7 to 10 .
  • Rigidity relating to the cover combined with the spring effect applied to the edges 7 to 10, naturally biased outwards and upwards, results in a mechanical closing connection which is firm and pleasant to use.
  • the flanges 7 to 10 are pushed back towards the side walls 3 to 6 of the container until the lugs 18 arrive opposite the orifices 13, 14, which allows clipping.
  • the reverse operation is simple to implement to remove the cover 17.
  • the initial cutting of the blank 1 which is slightly different, is such that the axial ends of the flanges 7 to 10 adjust to each other during a plane abutment, forming a continuous peripheral flange of appearance parallel to the bottom 2 on which can be heat-sealed a film lid (not shown).
  • a film lid not shown
  • the angle of the cutouts at said axial ends of the flanges 7 to 10 is therefore provided such that the continuous abutment can be made as shown in figure 7 , which also shows the thermoformed film internally, in light gray, on all of the internal faces and almost all of the edges 7 to 10 (for illustrative reasons, to better understand its positioning relative to the container: in reality, it covers also all of the edges 7 to 10).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Making Paper Articles (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)

Claims (31)

  1. Verfahren zum Herstellen von Verpackungen, deren Behälter aus einem vorgestanzten und vorgerillten flachen Kartonbogen gefertigt wird, wobei jeder Behälter durch Falten aus 3 Dimensionen mit Boden (2) und Seitenwänden (3, 4, 5, 6) besteht, wobei das Innere des Behältervolumens anschließend mit einem plastifizierten Film durch Thermoformen ausgekleidet wird, umfassend:
    - das automatisierte Laden der Bögen in einem vorgegebenen Rhythmus in mindestens einen Thermoformungs-Formhohlraum;
    - das Thermoformen des Films in den Behältern in einem mit dem Laderhythmus synchronisierten Rhythmus;
    - ein Vorformen der Bögen vor dem Laden in jeden Thermoformungs-Formhohlraum;
    dadurch gekennzeichnet, dass das automatisierte Laden umfasst:
    - das Entnehmen mindestens eines vorgestanzten und vorgerillten flachen Bogens durch Bogensammelmittel von mindestens einem Stapel dieser Bögen, und das Festhalten der Bögen auf den Sammelmitteln;
    - das Transferieren jedes Bogens durch Transfermittel zu Zuführungsmitteln mindestens eines Thermoformungs-Formhohlraums, und das Festhalten und das Vorformen der Bögen in den Zuführungsmitteln.
  2. Verfahren zum Herstellen von Verpackungen nach dem vorstehenden Anspruch, dadurch gekennzeichnet, dass die Zwischentransfermittel in Koordination mit den jeweiligen Bewegungen der Sammelmittel und der Zuführungsmittel beweglich sind, wobei die Transfermittel mit Mitteln zum Greifen/Festhalten jedes Bogens versehen sind.
  3. Verfahren zum Herstellen von Verpackungen nach dem vorstehenden Anspruch, dadurch gekennzeichnet, dass die Sammelmittel sich zwischen zwei Positionen jeweils zum Greifen mindestens eines Bogens von einem Stapel und zum Transferieren bewegen, die Transfermittel zwischen einer Position zum Entnehmen jedes von den Sammelmittel stammenden Bogens und einer Transferposition beweglich sind, und die Zuführungsmittel sich zwischen einer Position zum Aufnehmen jedes von den Transfermitteln stammenden Bogens und einer Position zum Zuführen zu einem Thermoformungs-Formhohlraum bewegen.
  4. Verfahren zum Herstellen von Verpackungen nach einem der vorstehenden Ansprüche, gekennzeichnet durch ein Vorformen der Bögen durch Übereinstimmung der Abmessungen und der Ausrichtung der Oberflächen einerseits von Mitteln zum Greifen/Festhalten in den Zuführungsmitteln und andererseits in dem Thermoformungs-Formhohlraum, was anschließend eine Übereinstimmung des Volumens bei einem gegenseitigen Einsetzen ermöglicht.
  5. Verfahren zum Herstellen von Verpackungen nach dem vorstehenden Anspruch, dadurch gekennzeichnet, dass die jeweiligen Oberflächen der Hohlräume und der Zuführungsmittel, die jeweils mit dem Boden (2) und den Seitenwänden (3, 4, 5, 6) der Verpackung übereinstimmen, in Übereinstimmung gebracht und sequenziell durch Ansaugen, das durch Erzeugen eines Unterdrucks an vorgegebenen Stellen der Wände (3, 4, 5, 6) des Hohlraums erhalten wird, in Berührung gehalten werden.
  6. Verfahren zum Herstellen von Verpackungen nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass ein Ablaufschritt des Zuführens durch eine Verpackung zu mindestens einem Formhohlraum und ein Ablaufschritt des Thermoformens einer anderen vorgeformten Verpackung, die in einen Hohlraum eingesetzt wird, nahezu gleichzeitig durchgeführt werden, wobei eine Kippform, die an ihrem Umfang mindestens einen Formhohlraum umfasst, sequenziell gemäß mindestens zwei verschiedene Drehpositionen angetrieben wird, wobei diese Positionen einen zeitlichen Betriebsschritt definieren.
  7. Verfahren zum Herstellen von Verpackungen nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der Film kontinuierlich ist und durch aufeinanderfolgende Dimensionsschritte zwischen Speichermitteln und einer Thermoformungsstufe bewegt wird, wobei mindestens ein Heizablaufschritt, der entlang eines Dimensionsschritts stromaufwärtig der Thermoformungsstufe angeordnet ist, kontinuierlich aktiviert wird.
  8. Verfahren zum Herstellen von Verpackungen nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass es zwei Heizablaufschritte umfasst, von denen ein optionaler Schritt als Vakuumdimensionsschritt betrieben wird.
  9. Verfahren zum Herstellen von Verpackungen nach einem der vorstehenden Ansprüche, gekennzeichnet durch Heizen der Hohlräume, die die vorgeformten Verpackungen aufnehmen.
  10. Verfahren zum Herstellen von Verpackungen nach einem der vorstehenden Ansprüche, gekennzeichnet durch die Erzeugung eines Unterdrucks während des Thermoformens des Films, in Verbindung mit der Position der in den Behälter eingebrachten Öffnungen (13, 14).
  11. Verfahren zum Herstellen von Verpackungen nach einem der vorstehenden Ansprüche, gekennzeichnet durch ein umlaufendes Stanzen der Behälter nach dem Thermoformen.
  12. Pappeverpackung, die den Behälter bildet, der mit einem plastifizierten inneren Film ausgekleidet ist, der durch das Verfahren der Ansprüche 1 bis 11 erhalten wird, umfassend einen thermoformbaren Film, der eine Dicke zwischen 80 µm und 200 µm vorweist, dadurch gekennzeichnet, dass der Karton für die Fertigung des Behälters porös ist, dass er umlaufende Ränder (7, 8, 9, 10) umfasst, die jede Seitenwand (3, 4, 5, 6) verlängern und nach außen zu diesen hin faltbar sind, und dass die Ränder (7, 8, 9, 10) mindestens eine Öffnung (13, 14) zum Befestigen eines Deckels (17) umfassen, wobei der Abschnitt des Films, der jede Öffnung (13, 14) bedeckt, als Blase ausgeformt ist, die zu den Seitenwänden (3, 4, 5, 6) des Behälters hin übersteht.
  13. Verpackung nach dem vorstehenden Anspruch, dadurch gekennzeichnet, dass der Film auf einer seiner Flächen (3, 4, 5, 6) eine Schicht aus hitzeaktivierbarem Klebstoff umfasst.
  14. Verpackung nach einem der Ansprüche 12 bis 13, dadurch gekennzeichnet, dass die benachbarten Enden der Ränder (7, 8, 9, 10) einander nicht berühren und durch einen Filmabschnitt (15) miteinander verbunden sind, der mit einer diagonalen Falte (16) ausgestattet ist.
  15. Verpackung nach einem der Ansprüche 12 bis 13, dadurch gekennzeichnet, dass die benachbarten Enden der Ränder (7, 8, 9, 10) aneinanderstoßen, wobei die Ränder (7, 8, 9, 10) einen kontinuierlichen umlaufenden Rand bilden.
  16. Verpackung nach einem der Ansprüche 12 bis 15, dadurch gekennzeichnet, dass die Faltlinien der vorgestanzten Kartonbögen für die Fertigung des Behälters durchstochene Punktlinien und angestanzte Schnittlinien umfassen.
  17. Maschine zum Herstellen von Verpackungen nach den Ansprüchen 12 bis 16, deren Behälter aus einem vorgestanzten und vorgerillten flachen Kartonbogen gefertigt wird, wobei jeder Behälter durch Falten in 3 Dimensionen vorgeformt wird und das Innere des Behältervolumens anschließend durch Thermoformen mit einem Kunststofffilm ausgekleidet wird, umfassend:
    - einen Roboter für automatisiertes Laden zum Zuführen und zum Vorformen der Kartonbehälter, der Mittel zum Vorformen der Bögen an die Form jedes Thermoformungs-Hohlraums umfasst;
    - eine Thermoformungseinheit, die das Thermoformen des Films in dem vorgeformten Behälter durchführt;
    dadurch gekennzeichnet, dass der Roboter für automatisiertes Laden umfasst:
    - Sammelmittel für Bögen von mindestens einem Stapel dieser Bögen, wobei diese Sammelmittel mit Mitteln zum Greifen/Festhalten der Bögen versehen sind;
    - Transfermittel für jeden Bogen zu:
    - Zuführungsmitteln der Thermoformungseinheit, die Mittel zum Greifen/Festhalten der Bögen und Mittel zum Vorformen umfassen, die dazu vorgesehen sind, mit jedem Hohlraum der Form oder der Formen der Thermoformungseinheit zusammenzuwirken.
  18. Maschine zum Herstellen von Verpackungen nach dem vorstehenden Anspruch, dadurch gekennzeichnet, dass die beweglichen Transfermittel mit Mitteln zum Greifen/Festhalten jedes Bogens versehen sind.
  19. Maschine zum Herstellen von Verpackungen nach einem der Ansprüche 17 und 18, dadurch gekennzeichnet, dass die Sammelmittel mindestens eine Platte zum Sammeln der Bögen umfassen, die Transfermittel mindestens eine Platte zum Transferieren der Bögen umfassen und die Zuführungsmittel mindestens eine Platine zum Zuführen der Bögen in gleicher Anzahl umfassen.
  20. Maschine zum Herstellen von Verpackungen nach dem vorstehenden Anspruch, dadurch gekennzeichnet, dass die Sammelmittel, die Transfermittel, die Zuführungsmittel jeweils eine Anzahl von Sammelplatten, Transfertafeln und Zuführplatinen in gleicher Anzahl wie die Bogenstapel umfassen.
  21. Maschine zum Herstellen von Verpackungen nach einem der Ansprüche 19 und 20, dadurch gekennzeichnet, dass die Mittel zum Greifen/Festhalten der Bögen auf jeder Sammelplatte, jeder beweglichen Transfertafel und jeder Zuführplatine aus Saugnäpfen bestehen.
  22. Maschine zum Herstellen von Verpackungen nach einem der Ansprüche 19 bis 21, dadurch gekennzeichnet, dass jede Zuführplatine eine Reliefform umfasst, die schräge Umrandungen vorweist, die einen mittleren Bereich umgeben, wobei der mittlere Bereich und diese Umrandungen entsprechend den Rillen (11, 11') und Stanzteilen der Bögen und als Negativ der Aussparung des übereinstimmenden Formhohlraums dimensioniert sind.
  23. Maschine zum Herstellen von Verpackungen nach dem vorstehenden Anspruch, dadurch gekennzeichnet, dass der mittlere Bereich der Reliefform gegen Federn einziehbar ist.
  24. Maschine zum Herstellen von Verpackungen nach einem der Ansprüche 17 bis 23, dadurch gekennzeichnet, dass der Boden der Hohlräume Öffnungen (13, 14) umfasst, die mit ersten Mitteln zum Erzeugen eines Unterdrucks verbunden sind.
  25. Maschine zum Herstellen von Verpackungen nach einem der Ansprüche 17 bis 24, dadurch gekennzeichnet, dass die schrägen Ränder der Hohlräume Öffnungen (13, 14) umfassen, die mit zweiten Mitteln zum Erzeugen eines Unterdrucks verbunden sind.
  26. Maschine zum Herstellen von Verpackungen nach einem der Ansprüche 17 bis 25, dadurch gekennzeichnet, dass die Thermoformungs-Formhohlräume in eine Kippform eingebracht sind.
  27. Maschine zum Herstellen von Verpackungen nach einem der Ansprüche 17 bis 26, dadurch gekennzeichnet, dass sie eine Filmantriebsstufe umfasst, die aus Noppenketten besteht, die sich auf Höhe der zwei Seitenumrandungen des Films befinden, wobei auf jeder Seite an den Ankunftseinlässen des kontinuierlichen Films eine Rolle aus Elastomermaterial angeordnet ist, oder die aus Kluppenketten besteht, die sich auf Höhe der zwei Seitenumrandungen des Films befinden.
  28. Maschine zum Herstellen von Verpackungen nach einem der Ansprüche 17 bis 27, dadurch gekennzeichnet, dass sie eine zusätzliche Heizeinheit umfasst, die unmittelbar stromaufwärtig der Thermoformungsstufe angeordnet ist.
  29. Maschine zum Herstellen von Verpackungen nach einem der Ansprüche 17 bis 28, dadurch gekennzeichnet, dass jeder Formhohlraum eigene temperaturgeregelte Heizmittel umfasst.
  30. Maschine zum Herstellen von Verpackungen nach einem der Ansprüche 17 bis 29, dadurch gekennzeichnet, dass sie Mittel zum umlaufenden Stanzen der Behälter umfasst.
  31. Maschine zum Herstellen von Verpackungen nach dem vorstehenden Anspruch, dadurch gekennzeichnet, dass die Stanzmittel an einem Umfang der Formhohlräume wirken.
EP18215484.9A 2017-12-22 2018-12-21 Verfahren und maschine zur herstellung von verpackungen, so erhaltene verpackungen Active EP3501813B1 (de)

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US11034498B2 (en) 2019-02-11 2021-06-15 G.Mondini S.p.a. Method for making a container comprising an outer skeleton and an inner layer of thermoplastic material, related container and paper-industry article used in the method
CN117284609A (zh) * 2019-12-25 2023-12-26 东罐兴业株式会社 组装式纸容器
IT202000008272A1 (it) * 2020-04-17 2021-10-17 G Mondini S P A Scheletro per un contenitore, articolo cartotecnico per realizzarlo e contenitore che lo comprende
US11427374B2 (en) 2020-12-28 2022-08-30 G.Mondini S.p.a. Paperboard article for making a container and container comprising the paperboard article
FR3137669A1 (fr) * 2022-07-07 2024-01-12 Geneomat Emballage de produits alimentaires et dispositif d’emballage associe

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FR2737475A1 (fr) * 1995-07-10 1997-02-07 Agaricuts Sa Emballage pour champignons frais et procede de conditionnement de champignons frais
US20090205929A1 (en) * 2008-02-14 2009-08-20 Deguglielmo Pascal Article selection and loading system
WO2009138786A2 (en) * 2008-05-13 2009-11-19 The Benson Box Company Limited Food packaging
EP3190059A1 (de) * 2016-01-06 2017-07-12 Nadine Bonzi Manuell zu öffnender behälter, z.b. für obst und gemüse, und abdeckung für einen solchen behälter

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Publication number Priority date Publication date Assignee Title
US5253801A (en) * 1992-12-22 1993-10-19 International Paper Company Multi sided food tray
FR3040654B1 (fr) * 2015-09-07 2018-03-23 Cgl Pack Service Procede et machine pour la fabrication de barquettes composites thermosoudees

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Publication number Priority date Publication date Assignee Title
FR2737475A1 (fr) * 1995-07-10 1997-02-07 Agaricuts Sa Emballage pour champignons frais et procede de conditionnement de champignons frais
US20090205929A1 (en) * 2008-02-14 2009-08-20 Deguglielmo Pascal Article selection and loading system
WO2009138786A2 (en) * 2008-05-13 2009-11-19 The Benson Box Company Limited Food packaging
EP3190059A1 (de) * 2016-01-06 2017-07-12 Nadine Bonzi Manuell zu öffnender behälter, z.b. für obst und gemüse, und abdeckung für einen solchen behälter

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DK3501813T3 (da) 2023-07-31
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EP3501813A2 (de) 2019-06-26
FR3075766B1 (fr) 2022-04-08
FR3075766A1 (fr) 2019-06-28

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