EP3468882B1 - Method and equipment for manufacturing a package, and package thus formed - Google Patents

Method and equipment for manufacturing a package, and package thus formed Download PDF

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Publication number
EP3468882B1
EP3468882B1 EP17734790.3A EP17734790A EP3468882B1 EP 3468882 B1 EP3468882 B1 EP 3468882B1 EP 17734790 A EP17734790 A EP 17734790A EP 3468882 B1 EP3468882 B1 EP 3468882B1
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EP
European Patent Office
Prior art keywords
cardboard
parts
manufacturing
window
conveyor belt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17734790.3A
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German (de)
French (fr)
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EP3468882A1 (en
Inventor
Francis Laroche
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Etudes Services Automatismes Techniques SA ESATEC
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Etudes Services Automatismes Techniques SA ESATEC
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Publication of EP3468882A1 publication Critical patent/EP3468882A1/en
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Classifications

    • 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
    • B65D15/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials
    • B65D15/22—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials of polygonal cross-section
    • 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
    • B65D5/32—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 having bodies formed by folding and interconnecting two or more blanks each blank forming a body part, whereby each body part comprises at least one outside face of the box, carton or tray
    • B65D5/326—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 having bodies formed by folding and interconnecting two or more blanks each blank forming a body part, whereby each body part comprises at least one outside face of the box, carton or tray at least one container body part formed by folding a single blank to a permanently assembled tube
    • B65D5/327—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 having bodies formed by folding and interconnecting two or more blanks each blank forming a body part, whereby each body part comprises at least one outside face of the box, carton or tray at least one container body part formed by folding a single blank to a permanently assembled tube at least two container body parts, each formed by folding a single blank to a permanently assembled tube
    • B65D5/328—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 having bodies formed by folding and interconnecting two or more blanks each blank forming a body part, whereby each body part comprises at least one outside face of the box, carton or tray at least one container body part formed by folding a single blank to a permanently assembled tube at least two container body parts, each formed by folding a single blank to a permanently assembled tube and the tubular body parts being alligned axially to form a container
    • 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
    • B65D5/4204—Inspection openings or windows
    • 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
    • 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
    • B31B2105/002—Making boxes characterised by the shape of the blanks from which they are formed
    • B31B2105/0022—Making boxes from tubular webs or blanks, e.g. with separate bottoms, including tube or bottom forming operations
    • 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
    • B31B2110/00—Shape of rigid or semi-rigid containers
    • B31B2110/30—Shape of rigid or semi-rigid containers having a polygonal cross section
    • B31B2110/35—Shape of rigid or semi-rigid containers having a polygonal cross section rectangular, e.g. square
    • 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
    • B31B50/74—Auxiliary operations
    • B31B50/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B50/82—Forming or attaching windows

Definitions

  • the present invention relates to the field of cardboard and more particularly cardboard packaging having a plastic window or a flexible, transparent material.
  • the window is advantageously transparent. It can be cut from PVC, PET, PP, cardboard or any other material.
  • WO2007116150 offers a single-piece blank in corrugated cardboard for the manufacture of a display case comprising a belt comprising at least four main rectangular flaps, linked together in pairs by parallel fold lines, and provided with two series of flaps located on both sides, suitable for forming at least partially respectively the bottom and the top of the body, characterized in that the belt comprises a precut transverse line making it possible to split the blank into two half blanks, said transverse line determining on the part and on the other and for each parallel fold line, two separate fold line portions offset relative to each other to allow at least partially the catching up of the cardboard thicknesses during the coating of the second half blank on the first half blank around a mandrel.
  • This patent application also describes a process for the production of a polygonal section packing case from a single blank in a sheet of corrugated cardboard, comprising a belt comprising at least four main rectangular flaps, linked together in pairs by parallel fold lines, and provided with two series of flaps located on either side, suitable for respectively forming at least partially the bottom and the top of the body, said belt comprising a precut transverse line making it possible to split the blank into two half blanks, characterized in that after unstacking the blank, the two half blanks are separated, the first half blank is deposited in a transfer channel, the second half blank being held in a plane greater than that of said transfer channel, the first half blank is transferred to a mandrel by gluing it in passing, the first half blank is wrapped around the mandrel, the transfer channel then being configured to allow the transfer of the second half blank, we lower said second half blank onto the channel, we transfer the second half blank to the mandrel and we wrap it around the first half blank itself coated around said mandrel,
  • the patent application US2139626 provides a method of manufacturing a paper container, which includes folding a rectangular blank, applying an adhesive to a side portion thereof, folding the edges of the blank, so that the adhesive-treated edge overlaps the opposite edge of the blank, exerting external pressure
  • the folded blank to permanently seal its overlapping edges, open the folded blank in a tubular state, form a rectangular blank to provide end closure for body structure.
  • the end closure blank has foldable marginal portions projecting therefrom, the ends of said folded blank The marginal portions being separated from each other by V-shaped spaces, said shaped spaces of V being formed by making an acute angular cut at each corner of the blank, folding the marginal parts to provide recesses, applying an adhesive to the recessed parts of the finishing closure, assemble the end closure to body structure by inserting the end of said body structure into the recesses of the formed end closure and applying By exerting external pressure to permanently seal said parts together.
  • the patent application 3372796 describes a package formed by an article having opposite end portions with dissimilar contours, a pair of capsules surrounding respective end portions of said article.
  • the packaging comprises means for retaining said caps in leaktight manner against said end portions.
  • the purpose of the present invention is to provide a solution for flexible and reliable manufacturing of such packaging.
  • the blank is deposited on a conveyor belt so that the center line passing through the breakable zones is oriented perpendicular to the direction of movement of said conveyor belt, and in that said pressure rollers are arranged transversely.
  • the method according to the invention controls the slowing down of the rear roller to cause the rupture of the connection zone and create a longitudinal offset between the two parts separated by a distance corresponding to the height of the window.
  • the method comprises a step of repositioning the two parts separated by a jogging module to ensure the realignment of the two parts.
  • the invention also relates to equipment for the manufacture of a packaging consisting of two cardboard bottoms and a transparent window extending on the lateral faces between said cardboard bottoms, characterized in that it comprises a conveyor belt and two rollers pressers whose rotation is controlled to cause the slowing of one of the rollers in contact with one of the parts relative to the roller in contact with the other part to cause the rupture of said breakable zones, and reposition the two parts by deviating by a distance corresponding to the height of the transparent window as well as a means of removing a transparent window and gluing the edges to the corresponding edges of the parts thus repositioned.
  • the equipment for manufacturing a packaging according to the invention further comprises a destacker for depositing the sides on the conveyor belt and a destacker for delivering the windows.
  • the equipment further comprises a jogger for realigning the cut and repositioned parts.
  • the invention also relates to a package comprising two cardboard bottoms, between which it has a plastic window, characterized in that it is produced in accordance with the above-mentioned process.
  • the figure 1 shows an example of packaging comprising two cardboard bottoms (100, 200) and a window (300) disposed between the two cardboard bottoms (100, 200).
  • the window (300) is typically cut from a PVC sheet, on which a groove (302) is applied to facilitate folding and prevent the PVC sheet, which is more rigid than the cardboard, from tearing the cardboard at the edge, during the forming of the cardboard and PVC bonding area.
  • the transparent window (300) can also have notches (301) on the edges, at the level of the fold lines (302), to prevent the stiffness of the PVC from creating a deformation exerting on the cardboard a pressure which can lead to a tear. local.
  • the figure 2 represents the assembly between the cardboard blanks (100; 200) and the window (300) before shaping.
  • the manufacture of a packaging box according to the invention comprises the following main steps: First of all, a series of cuts is cut from a cardboard sheet formed by two blanks (100, 200) separated by a transverse space (150) and punctually connected by breakable zones (160), and these cuts are stacked on a destacker.
  • the cardboard blanks are then driven, one by one, on a conveyor belt, to a blank processing station.
  • the cardboard blank is wedged, at least for part of its movement, between the conveyor belt and a pair of rollers supported on the upper surface of the blank.
  • the rollers initially rotate at a synchronous speed with the belt so as to ensure the movement of the cut without speed differential between the lower part and the upper part.
  • traction is then exerted on each of the blanks (100, 200), in opposite directions perpendicular to the median of the transverse space (150).
  • This traction is achieved by modifying the speed of the two rollers, when positioned on either side of the breakable area (160) of the cutout. For example, the roller is slowed down behind this breakable zone, so as to create a force in a direction perpendicular to the breakable line.
  • This effort causes the breakable zones (160) to rupture and makes it possible to separate the two blanks (100, 200), in order to position them one opposite the other with an offset corresponding to the transparent sheet (300).
  • a window is then transported in superposition with the two edges of the blanks (100, 200), an adhesive is deposited on the edge of the strips (110, 210) and the window is deposited on the glued area.
  • the figure 4 illustrates a particular example of equipment for implementing the method according to the invention.
  • the equipment comprises a suction conveyor (1) running longitudinally.
  • the cutout (2) is deposited on this suction belt (1) by a destacker, and slides under pressure rollers (3 to 5).
  • the cutout (2) is then driven between the belt (1) and a motorized transverse roller (6).
  • a belting module (7) ensures the separation of the two blanks (100, 200) of the cutout (2).
  • the purpose of the equipment is to detach and separate, parallel to a predefined distance, the cutout (2) cardboard made up of two or three pieces held in them by breakable zones (160).
  • a belt-retaining device (7) realigns the cardboard cut-outs (100, 200) in parallel with the suction mat (1) and ensures also the correct pre-programmed distance of the cutouts (100, 200) between them.
  • the pressure rollers (6) slow down while the front blank (200) of the cardboard blank (2) continues to advance at the same speed as the suction belt (1) and is kept under pressure by the pressure rollers (3 to 5 ) on the mat (1).
  • the rollers (6) accelerate to return at the same speed as the belt (1) at a very precise moment, determined beforehand by the separation length of the two cutouts (100, 200).
  • the separate blanks (100, 200) advance to the belting module (7).
  • the blanks (100, 200) are then realigned by pushing and retaining the straight edges of the two cardboard blanks (100, 200).
  • a motorized toothed belt provided with a welded cleat and synchronized with the advance movement of the blanks (100, 200), ensures braking and acceleration of the blanks (100, 200) on the suction mat (1), which also allows to finalize with precision, the spacing of the two blanks (100, 200).
  • the belt retractor module (7) consists of two belt carriages mounted in parallel.
  • the two notched belts are motorized by a splined shaft with ball bushing, allowing lateral adjustment of each carriage.
  • Each of the toothed belts is fitted with a welded cleat.
  • Each belt has a micro adjustment device, which allows the two tabs to be aligned in parallel or to make an angular correction of the cardboard cutouts.
  • the settings for synchronizing the tabs / at the cutout position can be configured on the machine console.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)

Description

Domaine de l'inventionField of the invention

La présente invention concerne le domaine du cartonnage et plus particulièrement des emballages en carton présentant une fenêtre en plastique ou un matériaux flexible, transparent.The present invention relates to the field of cardboard and more particularly cardboard packaging having a plastic window or a flexible, transparent material.

Le comportement des deux matériaux est très différent, en terme de souplesse, flexibilité, résistance,...The behavior of the two materials is very different, in terms of suppleness, flexibility, resistance, ...

La fenêtre est avantageusement transparente. Elle peut être découpée dans une feuille de PVC, PET, PP, carton ou tout autres matériaux.The window is advantageously transparent. It can be cut from PVC, PET, PP, cardboard or any other material.

L'assemblage de ces différents éléments n'est pas toujours aisée ni facilement industrialisable.The assembly of these different elements is not always easy or easily industrializable.

Etat de la techniqueState of the art

On connaît dans l'état de la technique la demande de brevet internationale WO2007116150 qui propose un flan mono-pièce en carton ondulé pour la fabrication d'une caisse présentoir comprenant une ceinture comportant au moins quatre volets rectangulaires principaux, reliés entre eux deux à deux par des lignes de pliage parallèles, et munie de deux séries de rabats situées de part et d'autre, propres à former respectivement au moins partiellement le fond et le dessus de la caisse, caractérisé en ce que la ceinture comprend une ligne transversale prédécoupée permettant de scinder le flan en deux demi flans, ladite ligne transversale déterminant de part et d'autre et pour chaque ligne de pliage parallèle, deux portions séparées de ligne de pliage décalées l'une par rapport à l'autre pour permettre au moins en partie le rattrapage des épaisseurs de carton lors de l'enrobage du deuxième demi flan sur le premier demi flan autour d'un mandrin. Cette demande de brevet décrit aussi un procédé pour la réalisation d'une caisse d'emballage à section polygonale à partir d'un mono-flan en feuille de carton ondulé, comprenant une ceinture comportant au moins quatre volets rectangulaires principaux, reliés entre eux deux à deux par des lignes de pliage parallèles, et munie de deux séries de rabats situées de part et d'autre, propres à former respectivement au moins partiellement le fond et le dessus de la caisse, ladite ceinture comprenant une ligne transversale prédécoupée permettant de scinder le flan en deux demi flans, caractérisé en ce que après dépilage du flan, on sépare les deux demi flans, on dépose le premier demi flan dans un chenal de transfert, le deuxième demi flan étant maintenu dans un plan supérieur à celui dudit chenal de transfert, on transfère le premier demi flan vers un mandrin en l'encollant au passage, on enrobe le premier demi flan autour du mandrin, le canal de transfert étant alors configuré pour permettre le transfert du second demi flan, on descend ledit second demi flan sur le canal, on transfère le second demi flan vers le mandrin et on l'enrobe autour du premier demi flan lui même enrobé autour dudit mandrin, pour former les parois latérales de la caisse, avant de replier les rabats autour dudit mandrin pour former le fond ou la partie supérieure de la caisse.The international patent application is known in the state of the art WO2007116150 which offers a single-piece blank in corrugated cardboard for the manufacture of a display case comprising a belt comprising at least four main rectangular flaps, linked together in pairs by parallel fold lines, and provided with two series of flaps located on both sides, suitable for forming at least partially respectively the bottom and the top of the body, characterized in that the belt comprises a precut transverse line making it possible to split the blank into two half blanks, said transverse line determining on the part and on the other and for each parallel fold line, two separate fold line portions offset relative to each other to allow at least partially the catching up of the cardboard thicknesses during the coating of the second half blank on the first half blank around a mandrel. This patent application also describes a process for the production of a polygonal section packing case from a single blank in a sheet of corrugated cardboard, comprising a belt comprising at least four main rectangular flaps, linked together in pairs by parallel fold lines, and provided with two series of flaps located on either side, suitable for respectively forming at least partially the bottom and the top of the body, said belt comprising a precut transverse line making it possible to split the blank into two half blanks, characterized in that after unstacking the blank, the two half blanks are separated, the first half blank is deposited in a transfer channel, the second half blank being held in a plane greater than that of said transfer channel, the first half blank is transferred to a mandrel by gluing it in passing, the first half blank is wrapped around the mandrel, the transfer channel then being configured to allow the transfer of the second half blank, we lower said second half blank onto the channel, we transfer the second half blank to the mandrel and we wrap it around the first half blank itself coated around said mandrel, to form the side walls of the box, before folding the flaps around said mandrel to form the bottom or the upper part of the box.

On connaît aussi la demande de brevet américaine US2143957 décrivant un exemple emballage comprenant la combinaison d'un tube de feuille transparente en cellulose ou analogue formant une paroi latérale tubulaire, une paire d'éléments de forme formés de carton ou analogue, lesdits éléments d'extrémité comprenant des parties de bande périphérique attachées de manière adhésive À des extrémités opposées de ladite paroi latérale tubulaire et marquées le long de lignes s'étendant parallèlement à la direction de ladite paroi latérale tubulaire pour fournir des virages d'angle allongés, et des pattes de fermeture d'extrémité reliées de manière articulée avec le paquet sont remplies de matériau lâche et le paquet lorsqu'il est tellement rempli Adapté pour se tenir debout sans prise en charge.We also know the American patent application US2143957 describing an exemplary package comprising the combination of a tube of transparent sheet of cellulose or the like forming a tubular side wall, a pair of shaped elements formed of cardboard or the like, said end elements comprising parts of peripheral band attached from adhesive manner At opposite ends of said tubular side wall and marked along lines extending parallel to the direction of said tubular side wall to provide elongated corner turns, and end closure tabs hingedly connected with the package are filled with loose material and the package when so full Adapted to stand upright without support.

La demande de brevet US2139626 propose un procédé de fabrication d'un récipient en papier, qui comprend le pliage d'une ébauche rectangulaire, l'application d'un adhésif sur une partie latérale de celui-ci, le pliage des bords de l'ébauche, de sorte que le bord traité adhésif chevauche le bord opposé de l'ébauche, exerçant une pression extérieure L'ébauche pliée pour sceller de manière permanente ses bords superposés, ouvrir l'ébauche pliée à l'état tubulaire, former une ébauche de forme rectangulaire pour fournir une fermeture d'extrémité pour la structure du corps. L'ébauche de fermeture d'extrémité présente des parties marginales pliables faisant saillie de celles-ci, les extrémités de ladite ébauche pliée Les parties marginales étant séparées l'une de l'autre par des espaces en forme de V, lesdits espaces en forme de V étant formés en réalisant une découpe angulaire aiguë à chaque coin de l'ébauche, en pliant les parties marginales pour fournir des évidements, en appliquant un adhésif sur les parties en retrait de La fermeture de finition, assembler la fermeture d'extrémité à la structure du corps en insérant l'extrémité de ladite structure de corps dans les évidements de la fermeture d'extrémité formée et appliquer En exerçant une pression externe pour sceller de façon permanente lesdites pièces ensemble.The patent application US2139626 provides a method of manufacturing a paper container, which includes folding a rectangular blank, applying an adhesive to a side portion thereof, folding the edges of the blank, so that the adhesive-treated edge overlaps the opposite edge of the blank, exerting external pressure The folded blank to permanently seal its overlapping edges, open the folded blank in a tubular state, form a rectangular blank to provide end closure for body structure. The end closure blank has foldable marginal portions projecting therefrom, the ends of said folded blank The marginal portions being separated from each other by V-shaped spaces, said shaped spaces of V being formed by making an acute angular cut at each corner of the blank, folding the marginal parts to provide recesses, applying an adhesive to the recessed parts of the finishing closure, assemble the end closure to body structure by inserting the end of said body structure into the recesses of the formed end closure and applying By exerting external pressure to permanently seal said parts together.

La demande de brevet 3372796 décrit un emballage formé par un article ayant des parties d'extrémité opposées avec des contours dissemblables, une paire de capsules entourant des parties d'extrémité respectives dudit article. L'emballage comprend des moyens pour retenir lesdits capuchons de manière étanche contre lesdites parties d'extrémité.The patent application 3372796 describes a package formed by an article having opposite end portions with dissimilar contours, a pair of capsules surrounding respective end portions of said article. The packaging comprises means for retaining said caps in leaktight manner against said end portions.

Des flans unitaires de carton pliable et comprenant chacun une section auxiliaire intégrale adaptée pour être pliée d'une manière à fournir un contour particulier pour enfermer une partie de l'article et adapté pour être plié d'une autre façon pour fournir un contour différent pour enfermer l'autre partie de l'article .Unit blanks of foldable cardboard and each comprising an integral auxiliary section adapted to be folded so as to provide a particular outline for enclosing a part of the article and adapted to be folded in another way to provide a different contour to enclose the other part of the article.

Inconvénient de l'art antérieurDisadvantage of the prior art

Les solutions de l'art antérieur ne sont pas satisfaisantes car elles ne permettent pas de fabriquer de manière industrielle, économique et fiable, un emballage en carton comportant une fenêtre en plastique transparent.The solutions of the prior art are not satisfactory because they do not make it possible to manufacture, industrially, economically and reliably, a cardboard packaging comprising a window in transparent plastic.

Solution apportée par l'inventionSolution provided by the invention

Le but de la présente invention est de proposer une solution permettant de fabriquer de manière flexible et fiable de tels emballages.The purpose of the present invention is to provide a solution for flexible and reliable manufacturing of such packaging.

Elle concerne selon son acception la plus générale un procédé pour la fabrication d'un emballage constitué par deux fonds en carton et une fenêtre s'étendant sur les faces latérales entre lesdits fonds en carton, dans lequel :

  • on prépare des découpes en carton en découpant dans une feuille deux parties correspondant respectivement à la forme à plat du premier et du second fond en carton réunies par des zones sécables de liaison
  • on dispose sur un tapis transporteur les flans,
  • on applique sur un flan des rouleaux presseurs
  • on commande le ralentissement de l'un des rouleaux en contact avec l'une des parties par rapport au rouleau en contact avec l'autre partie pour provoquer la rupture desdites zones sécables
  • on repositionne les deux parties en les écartant d'une distance correspondant à la hauteur de la fenêtre transparente
  • on dépose la fenêtre transparente pour coller les bords sur les bords correspondant des parties ainsi repositionnées.
According to its most general meaning, it relates to a process for the manufacture of a packaging consisting of two cardboard bottoms and a window extending on the lateral faces between said cardboard bottoms, in which:
  • cardboard blanks are prepared by cutting from a sheet two parts corresponding respectively to the flat shape of the first and second cardboard backings joined by breakable connecting zones
  • the blanks are placed on a conveyor belt,
  • pressure rollers are applied to a blank
  • one controls the slowing down of one of the rollers in contact with one of the parts relative to the roller in contact with the other part to cause the rupture of said breakable zones
  • we reposition the two parts by moving them apart by a distance corresponding to the height of the transparent window
  • the transparent window is deposited to paste the edges on the corresponding edges of the parts thus repositioned.

De préférence, le flan est déposé sur une bande transporteuse de telle sorte que la ligne médiane passant par les zones sécables soit orientée perpendiculairement à la direction de déplacement de ladite bande transporteuse, et en ce que lesdits rouleaux presseurs sont disposés transversalement.Preferably, the blank is deposited on a conveyor belt so that the center line passing through the breakable zones is oriented perpendicular to the direction of movement of said conveyor belt, and in that said pressure rollers are arranged transversely.

Selon un mode de mise en œuvre préféré, le procédé selon l'invention commande le ralentissement du rouleau arrière pour provoquer la rupture de la zone de liaison et créer un décalage longitudinal entre les deux parties séparées d'une distance correspondant à la hauteur de la fenêtre.According to a preferred embodiment, the method according to the invention controls the slowing down of the rear roller to cause the rupture of the connection zone and create a longitudinal offset between the two parts separated by a distance corresponding to the height of the window.

Avantageusement, le procédé comporte une étape de repositionnement des deux parties séparées par un module de retaquage pour assurer le réalignement des deux parties séparées.Advantageously, the method comprises a step of repositioning the two parts separated by a jogging module to ensure the realignment of the two parts.

L'invention concerne aussi un équipement pour la fabrication d'un emballage constitué par deux fonds en carton et une fenêtre transparente s'étendant sur les faces latérales entre lesdits fonds en carton, caractérisé en ce qu'il comporte une bande transporteuse et deux rouleaux presseurs dont la rotation est commandée pour provoquer le ralentissement de l'un des rouleaux en contact avec l'une des parties par rapport au rouleau en contact avec l'autre partie pour provoquer la rupture desdites zones sécables, et repositionner les deux parties en les écartant d'une distance correspondant à la hauteur de la fenêtre transparente ainsi qu'un moyen de dépose d'une fenêtre transparente et coller les bords sur les bords correspondant des parties ainsi repositionnées.The invention also relates to equipment for the manufacture of a packaging consisting of two cardboard bottoms and a transparent window extending on the lateral faces between said cardboard bottoms, characterized in that it comprises a conveyor belt and two rollers pressers whose rotation is controlled to cause the slowing of one of the rollers in contact with one of the parts relative to the roller in contact with the other part to cause the rupture of said breakable zones, and reposition the two parts by deviating by a distance corresponding to the height of the transparent window as well as a means of removing a transparent window and gluing the edges to the corresponding edges of the parts thus repositioned.

De préférence, l'équipement pour la fabrication d'un emballage selon l'invention comporte en outre un dépileur pour déposer les flancs sur la bande transporteuse et un dépileur pour délivrer les fenêtres.Preferably, the equipment for manufacturing a packaging according to the invention further comprises a destacker for depositing the sides on the conveyor belt and a destacker for delivering the windows.

Avantageusement, l'équipement comporte en outre un retaqueur pour réaligner les parties découpées et repositionnées.Advantageously, the equipment further comprises a jogger for realigning the cut and repositioned parts.

L'invention concerne encore un emballage comprenant deux fonds en carton entre lesquels elle présente une fenêtre en plastique caractérisé en ce qu'elle est fabriquée conformément au procédé susvisé.The invention also relates to a package comprising two cardboard bottoms, between which it has a plastic window, characterized in that it is produced in accordance with the above-mentioned process.

Description détaillée d'un exemple non limitatif de l'inventionDetailed description of a nonlimiting example of the invention

La présente invention sera mieux comprise à la lecture de la description détaillée d'un exemple non limitatif de l'invention qui suit, se référant aux dessins annexés où :

  • la figure 1 représente une vue en perspective d'une boîte d'emballage selon l'invention
  • la figure 2 représente une vue à plat d'une boîte d'emballage
  • la figure 3 représente une vue de la découpe en carton
  • la figure 4 représente une vue de dessus d'une machine selon l'invention
The present invention will be better understood on reading the detailed description of a nonlimiting example of the invention which follows, referring to the accompanying drawings in which:
  • the figure 1 shows a perspective view of a packaging box according to the invention
  • the figure 2 represents a flat view of a packaging box
  • the figure 3 represents a view of the cardboard cutout
  • the figure 4 shows a top view of a machine according to the invention

Description d'un exemple d'emballageDescription of an example of packaging

La figure 1 représente un exemple d'emballage comprenant deux fonds (100, 200) en carton et une fenêtre (300) disposée entre les deux fonds en carton (100, 200).The figure 1 shows an example of packaging comprising two cardboard bottoms (100, 200) and a window (300) disposed between the two cardboard bottoms (100, 200).

La fenêtre (300) est typiquement découpée dans une feuille de PVC, sur laquelle on applique un rainurage (302) pour faciliter le pliage et éviter que lors de la mise en forme, la feuille en PVC, plus rigide que le carton, ne vienne déchirer le carton au niveau d'une arête, dans la zone de liaison du carton et du PVC.The window (300) is typically cut from a PVC sheet, on which a groove (302) is applied to facilitate folding and prevent the PVC sheet, which is more rigid than the cardboard, from tearing the cardboard at the edge, during the forming of the cardboard and PVC bonding area.

La fenêtre transparente (300) peut aussi présenter des échancrures (301) sur les bords, au niveau des lignes de pliages (302), pour éviter que la raideur du PVC ne crée une déformation exerçant sur le carton une pression pouvant conduire à une déchirure locale.The transparent window (300) can also have notches (301) on the edges, at the level of the fold lines (302), to prevent the stiffness of the PVC from creating a deformation exerting on the cardboard a pressure which can lead to a tear. local.

La figure 2 représente l'assemblage entre les flans de carton (100 ; 200) et la fenêtre (300) avant la mise en forme.The figure 2 represents the assembly between the cardboard blanks (100; 200) and the window (300) before shaping.

La fabrication d'une boîte d'emballage selon l'invention comporte les étapes principales suivantes :
On découpe tout d'abord dans une feuille en carton une série de découpes formée de deux flans (100, 200) séparés par un espace transversal (150) et reliés ponctuellement par des zones sécables (160), et on empile ces découpes sur un dépileur.The manufacture of a packaging box according to the invention comprises the following main steps:
First of all, a series of cuts is cut from a cardboard sheet formed by two blanks (100, 200) separated by a transverse space (150) and punctually connected by breakable zones (160), and these cuts are stacked on a destacker.

Parallèlement, on prépare une série de fenêtres découpées et prérainées, et on les emmagasine sur un autre dépileur.At the same time, a series of pre-cut and pre-cut windows is prepared and stored on another destacker.

On entraine ensuite les découpes en carton, une à une, sur un tapis transporteur, jusqu'à un poste de traitement des découpes.The cardboard blanks are then driven, one by one, on a conveyor belt, to a blank processing station.

La découpe en carton est coincée, sur une partie au moins de son déplacement, entre le tapis transporteur et une paire de rouleaux appuyés sur la surface supérieure de la découpe. Les rouleaux tournent initialement à une vitesse synchrone avec le tapis de façon à assurer le déplacement de la découpe sans différentiel de vitesse entre la partie inférieure et la partie supérieure.The cardboard blank is wedged, at least for part of its movement, between the conveyor belt and a pair of rollers supported on the upper surface of the blank. The rollers initially rotate at a synchronous speed with the belt so as to ensure the movement of the cut without speed differential between the lower part and the upper part.

Sur ce poste de traitement, on exerce ensuite une traction sur chacun des flans (100, 200), dans des directions opposées perpendiculaires à la médiane de l'espace transversal (150). Cette traction est réalisée en modifiant la vitesse des deux rouleaux, lorsqu'ils sont positionnés de part et d'autre de la zone sécable (160) de la découpe. On ralentit par exemple le rouleau en arrière de cette zone sécable, de façon à créer un effort selon une direction perpendiculaire à la ligne sécable.On this treatment station, traction is then exerted on each of the blanks (100, 200), in opposite directions perpendicular to the median of the transverse space (150). This traction is achieved by modifying the speed of the two rollers, when positioned on either side of the breakable area (160) of the cutout. For example, the roller is slowed down behind this breakable zone, so as to create a force in a direction perpendicular to the breakable line.

Cet effort provoque la rupture des zones sécables (160) et permet d'écarter les deux flans (100, 200), pour les positionner l'un en face de l'autre avec un décalage correspondant à la feuille transparente (300).This effort causes the breakable zones (160) to rupture and makes it possible to separate the two blanks (100, 200), in order to position them one opposite the other with an offset corresponding to the transparent sheet (300).

On transporte alors une fenêtre en superposition avec les deux bords des flans (100, 200), on dépose une colle sur le bord des bandeaux (110, 210) et on dépose la fenêtre sur la zone encollée.A window is then transported in superposition with the two edges of the blanks (100, 200), an adhesive is deposited on the edge of the strips (110, 210) and the window is deposited on the glued area.

Description d'un équipement pour la mise en œuvre du procédéDescription of equipment for implementing the process

La figure 4 illustre un exemple particulier d'équipement pour la mise en œuvre du procédé selon l'invention.The figure 4 illustrates a particular example of equipment for implementing the method according to the invention.

L'équipement comprend un tapis aspirant (1) défilant longitudinalement. La découpe (2) est déposée sur ce tapis aspirant (1) par un dépileur, et glisse sous des rouleaux presseurs (3 à 5).The equipment comprises a suction conveyor (1) running longitudinally. The cutout (2) is deposited on this suction belt (1) by a destacker, and slides under pressure rollers (3 to 5).

La découpe (2) est ensuite entraînée entre le tapis (1) et un rouleau transversal motorisé (6).The cutout (2) is then driven between the belt (1) and a motorized transverse roller (6).

Un module de retaquage à courroies (7) assure la séparation des deux flans (100, 200) de la découpe (2).A belting module (7) ensures the separation of the two blanks (100, 200) of the cutout (2).

L'équipement a pour but de détacher et séparer parallèlement à une distance prédéfinie, la découpe (2) carton constituée de deux ou trois morceaux tenue en eux par des zones sécables (160).The purpose of the equipment is to detach and separate, parallel to a predefined distance, the cutout (2) cardboard made up of two or three pieces held in them by breakable zones (160).

Cette séparation s'effectue dans la machine de façon continue et linéaire dans le pas de la machine.This separation takes place in the machine continuously and linearly in the machine pitch.

Après la séparation des découpes (100, 200), un dispositif retaqueur à courroies (7), réaligne en parallèles les découpes carton (100, 200) sur le tapis aspirant (1) et assure également la bonne distance préprogrammée des découpes (100, 200) entre elles.After the cut-outs (100, 200) have been separated, a belt-retaining device (7) realigns the cardboard cut-outs (100, 200) in parallel with the suction mat (1) and ensures also the correct pre-programmed distance of the cutouts (100, 200) between them.

Durant le transfert le flan arrière (100) de la découpe (2) est maintenu serré entre les rouleaux presseurs (6).During the transfer, the rear blank (100) of the cutout (2) is kept clamped between the pressure rollers (6).

Les rouleaux presseurs (6) ralentissent alors que le flan avant (200) de la découpe carton (2) continue d'avancer à la même vitesse que le tapis aspirant (1) et est maintenue en pression par les rouleaux presseurs (3 à 5) sur le tapis (1).The pressure rollers (6) slow down while the front blank (200) of the cardboard blank (2) continues to advance at the same speed as the suction belt (1) and is kept under pressure by the pressure rollers (3 to 5 ) on the mat (1).

Après séparation des flans (100, 200), les rouleaux (6) accélèrent pour revenir à la même vitesse que le tapis (1) à un moment bien précis, déterminé préalablement par la longueur de séparation des deux découpes (100, 200).After separation of the blanks (100, 200), the rollers (6) accelerate to return at the same speed as the belt (1) at a very precise moment, determined beforehand by the separation length of the two cutouts (100, 200).

Les flans (100, 200) séparées avancent jusqu'au module de retaquage à courroies (7).The separate blanks (100, 200) advance to the belting module (7).

Les flans (100, 200) sont ensuite réalignées par la poussée et la retenue des bords droits des deux flans carton (100, 200).The blanks (100, 200) are then realigned by pushing and retaining the straight edges of the two cardboard blanks (100, 200).

Une courroie crantée motorisée munie d'un taquet soudé et synchronisé au mouvement d'avance des flans (100, 200), assure un freinage et une accélération des flans (100, 200) sur le tapis aspirant (1), ce qui permet également de finaliser avec précision, l'écartement des deux flans (100, 200).A motorized toothed belt provided with a welded cleat and synchronized with the advance movement of the blanks (100, 200), ensures braking and acceleration of the blanks (100, 200) on the suction mat (1), which also allows to finalize with precision, the spacing of the two blanks (100, 200).

Le module retaqueur à courroies (7) est constitué de deux chariots à courroie montés en parallèle.The belt retractor module (7) consists of two belt carriages mounted in parallel.

Les deux courroies crantées sont motorisées par un arbre cannelé à douille à billes, permettant un réglage latéral de chaque chariot.The two notched belts are motorized by a splined shaft with ball bushing, allowing lateral adjustment of each carriage.

Chacune des courroies crantées est munie d'un taquet soudé. Chaque courroie possède un dispositif de micro réglage, qui permet un alignement des deux taquets en parallèle ou d'effectuer une correction angulaire des découpes carton. Les réglages de synchronisation des taquets / à la position des découpes, sont paramétrables au pupitre de la machine.Each of the toothed belts is fitted with a welded cleat. Each belt has a micro adjustment device, which allows the two tabs to be aligned in parallel or to make an angular correction of the cardboard cutouts. The settings for synchronizing the tabs / at the cutout position can be configured on the machine console.

Principe pour alignement de 2 flans (100, 200):Principle for alignment of 2 blanks (100, 200):

  • Phase 1 : Le taquet pousse par l'arrière le premier flan (200) du carton séparé auparavant en amont.Phase 1: The cleat pushes the first blank (200) of the cardboard previously separated upstream from behind.
  • Phase 2 : Accompagnement de la poussée du premier flan (200) de 2 à 5 millimètres.Phase 2: Support of the push of the first blank (200) from 2 to 5 millimeters.
  • Phase 3 : Fin d'accompagnement de la poussée du premier flan (200) du carton de 2 à 5 millimètres et retour du taquet vers l'arrière pour venir se positionner sur le bord avant du deuxième flan (100).Phase 3: End of support for the push of the first blank (200) of the carton from 2 to 5 millimeters and return of the cleat to the rear to come to position on the front edge of the second blank (100).
  • Phase 4 : Ralentissement du deuxième flan (100) de 2 à 5 millimètres par rapport au tapis (1), lorsque la zone sécable se trouve entre le premier et le deuxième rouleau, puis rotation du taquet pour préparation du carton suivant.Phase 4: Slowing down of the second blank (100) from 2 to 5 millimeters in relation to the belt (1), when the breakable zone is between the first and the second roll, then rotation of the cleat to prepare the next carton.

Claims (8)

  1. A method for manufacturing a package consisting of two cardboard bottoms and a window that extends on the lateral faces between said cardboard bottoms, wherein:
    - cardboard cutouts (2) are prepared by cutting, from a sheet, two parts (100, 200) that correspond respectively to the shape of the first and second cardboard bottom joined by separable connecting zones (160),
    - the cutout is carried along on a conveyor belt with the aid of a pair of motorized rollers that are supported on the upper surface of the cutout,
    - one of the rollers that is in contact with one of the parts (200) is decelerated in a controlled manner relative to the roller that is in contact with the other part (100) in order to cause said separable zones (160) to tear, and
    - the window (300) is put in place in order to glue the edges onto the corresponding edges of the parts (100, 200) that have been repositioned in this manner.
  2. The method for manufacturing a package according to claim 1, characterized in that the cutout (2) is deposited on a conveyor belt (1) so that the center line passing through the separable zones (160) is oriented perpendicularly to the direction of movement of said conveyor belt (1), and in that said pressure rollers are arranged transversely thereto.
  3. The method for manufacturing a package according to claim 2, characterized in that the deceleration of the rear roller is controlled so as to cause tearing of the connecting zone (160) and to create a longitudinal offset between the two separated parts (100, 200) by a distance corresponding to the height of the window (300).
  4. The method for manufacturing a package according to claim 1, characterized in that it comprises a step of repositioning the two separated parts (100, 200) by means of a jogging module in order to ensure the realignment of the two separated parts (100, 200).
  5. A device for manufacturing a package consisting of two cardboard bottoms (100, 200) and a transparent window (300) that extends on the lateral faces between said cardboard bottoms (100, 200), characterized in that it comprises a conveyor belt (1) and two pressure rollers whose rotation is controlled so as to cause one of the rollers that is in contact with one of the parts (100) to decelerate relative to the roller that is in contact with the other part (200) in order to cause said separable zones (160) to tear and so as to reposition the two parts (100, 200) by moving them apart by a distance corresponding to the height of the window (300), as well as a means for putting a window (300) in place and gluing the edges onto the corresponding edges of the parts (100, 200) that have been repositioned in this manner.
  6. A device for manufacturing a package according to the preceding claim, characterized in that it further comprises an unstacker for depositing the sides on the conveyor belt and an unstacker for delivering the windows (300).
  7. A device for manufacturing a package according to either claim 5 or claim 6, characterized in that it further comprises a jogger for realigning the cut and repositioned parts (100, 200).
  8. A box comprising two cardboard bottoms and a plastics window therebetween, characterized in that it is manufactured from a cardboard cutout (2) formed from a sheet comprising two parts (100, 200) corresponding respectively to the shape of the first and second cardboard bottoms joined by separable connecting zones (160), the manufacturing being carried out according to the method according to any one of claims 1 to 5.
EP17734790.3A 2016-06-09 2017-06-08 Method and equipment for manufacturing a package, and package thus formed Active EP3468882B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1655280A FR3052389B1 (en) 2016-06-09 2016-06-09 METHOD AND EQUIPMENT FOR THE MANUFACTURE OF A PACKAGING AND PACKAGING THUS PRODUCED
PCT/FR2017/051445 WO2017212176A1 (en) 2016-06-09 2017-06-08 Method and equipment for manufacturing a package, and package thus formed

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EP3468882A1 EP3468882A1 (en) 2019-04-17
EP3468882B1 true EP3468882B1 (en) 2020-05-20

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US (1) US20190144160A1 (en)
EP (1) EP3468882B1 (en)
CN (1) CN109311562B (en)
FR (1) FR3052389B1 (en)
WO (1) WO2017212176A1 (en)

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Publication number Priority date Publication date Assignee Title
US11185058B2 (en) * 2017-03-01 2021-11-30 Alan J. Cohen Ornament assembly

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2507155A1 (en) * 1981-06-05 1982-12-10 Babey Marie Edith Boxes of transparent film assembled by ancillary flaps of cardboard - for display purpose combined with adhesive bonded closure

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2139626A (en) * 1935-10-04 1938-12-06 Specialty Automatic Machine Co Paper container for fluid
US2143957A (en) * 1937-04-27 1939-01-17 Noel A Petter Display package
US3372796A (en) * 1967-01-13 1968-03-12 Container Corp Interchangeable cap for package
DE3737968A1 (en) * 1987-11-07 1989-05-18 Kohmann Gmbh Co Maschbau METHOD FOR THE PRODUCTION OF FILM CUTTINGS FOR FOLDING BOXES WITH ANGLE WINDOWS OR SUCH FOLDING BOXES AND CORRESPONDING DEVICE
ITBO20060214A1 (en) * 2006-03-29 2006-06-28 Gd Spa METHOD FOR THE PRODUCTION OF OVERHEAD MATERIAL AND PACKAGE EQUIPPED WITH MATERIALS SO PRODUCED.
FR2899873B1 (en) * 2006-04-12 2008-07-11 Otor Sa FLAN MONO PIECE, CASE DISPLAY, METHOD AND DEVICE FOR MANUFACTURING SUCH BOX FROM THE FLAN

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2507155A1 (en) * 1981-06-05 1982-12-10 Babey Marie Edith Boxes of transparent film assembled by ancillary flaps of cardboard - for display purpose combined with adhesive bonded closure

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CN109311562B (en) 2020-06-02
FR3052389B1 (en) 2018-05-18
WO2017212176A1 (en) 2017-12-14
US20190144160A1 (en) 2019-05-16
FR3052389A1 (en) 2017-12-15
CN109311562A (en) 2019-02-05
EP3468882A1 (en) 2019-04-17

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