EP3472056A1 - Method for producing a cardboard box - Google Patents

Method for producing a cardboard box

Info

Publication number
EP3472056A1
EP3472056A1 EP17734796.0A EP17734796A EP3472056A1 EP 3472056 A1 EP3472056 A1 EP 3472056A1 EP 17734796 A EP17734796 A EP 17734796A EP 3472056 A1 EP3472056 A1 EP 3472056A1
Authority
EP
European Patent Office
Prior art keywords
window
width
rigid
cardboard box
cuts
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.)
Granted
Application number
EP17734796.0A
Other languages
German (de)
French (fr)
Other versions
EP3472056B1 (en
Inventor
Francis Laroche
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Etudes Services Automatismes Techniques SA ESATEC
Original Assignee
Etudes Services Automatismes Techniques SA ESATEC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Etudes Services Automatismes Techniques SA ESATEC filed Critical Etudes Services Automatismes Techniques SA ESATEC
Publication of EP3472056A1 publication Critical patent/EP3472056A1/en
Application granted granted Critical
Publication of EP3472056B1 publication Critical patent/EP3472056B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B50/16—Cutting webs
    • B31B50/18—Cutting webs longitudinally
    • 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
    • B31B50/25—Surface scoring
    • 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
    • B31B50/60—Uniting opposed surfaces or edges; Taping
    • B31B50/62—Uniting opposed surfaces or edges; Taping by adhesives
    • 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
    • B31B50/60—Uniting opposed surfaces or edges; Taping
    • B31B50/62—Uniting opposed surfaces or edges; Taping by adhesives
    • B31B50/624—Applying glue on blanks
    • 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
    • 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
    • B31B2120/30—Construction of rigid or semi-rigid containers collapsible; temporarily collapsed during manufacturing
    • B31B2120/302—Construction of rigid or semi-rigid containers collapsible; temporarily collapsed during manufacturing collapsible into a flat condition

Definitions

  • the present invention relates to a method of manufacturing packaging box window covers, a machine for the automatic manufacture of such packaging boxes as well as the windows thus produced and the packaging boxes provided with such windows.
  • the French patent registered under FR8026305, for example describes a presentation box having an opening overlapping at least one edge, this opening is closed by a transparent rigid plastic sheet.
  • the transparent plastic window has indentations at the end of the grooves corresponding to the edges of the box, so as not to cooperate the edges of the sheet with the folding beads of the carton side of the box.
  • the certificate of addition filed under FR8113025 relates to a method of manufacturing such boxes consisting of cutting a side forming the box with an opening, to arrange on this opening a sheet of plastic greater transparency than this opening and to groove this sheet to form the folding primers.
  • the boxes thus obtained have a rigidity greater than previously known boxes and comprising a flexible plastic sheet covering the window. They are, in particular, remarkable in that it does not form bead or tear at the connection of the sheet and the cardboard cut, on the edges, thanks to the presence of notches extending beyond the edge of the window.
  • French patent FR 2496052 describes another example of manufacturing boxes, for example parallelepipedic, comprising a window overlapping at least one edge of the box.
  • the window is constituted by an opening of the cardboard blank closed by a transparent rigid plastic sheet.
  • the lines of the sheet corresponding to the edges of the box are weakened and their ends are notched in order to prevent the sheet from overlapping the folding beads of the blank.
  • French patent FR2632610 relates to a method of manufacturing packaging box window covers overlapping at least one edge of the box.
  • the method comprises cutting into a rigid transparent plastic film notches, to be bonded to the film thus prepared a flexible transparent plastic film and to cut in the composite material thus formed sheets cover.
  • French Patent FR2507155 describes another example of transparent box made from a polyvinyl chloride sleeve and at least one cardboard sleeve provided with tabs for closing one end of the transparent tube.
  • the assembly by gluing of the two sleeves makes it possible to obtain a transparent sheath and an opaque bottom.
  • the patent application DE9012578 relates to a folding box with a cardboard body part with a window opening with an insertion, extending on at least two fold lines, inside the window of a transparent, rigid, consisting of a plastic window film whose structural strength substantially equal to that of the cardboard box and with the window environment forms a first frame-shaped covering area, in which the window sheet is fixedly connected to the housing , wherein the window sheet extends in the direction of the fold lines on at least one side of the window in a second overlap area in which the window sheet has no connection with the cardboard box and is also located from each side of two fold lines, and wherein the body portion within the second unbound overlapping zone a line of weakness within a housing comprising.
  • the triangular cuts reduce the bonding surface of the window on the cardboard.
  • the invention relates, in its most general sense, to a method of manufacturing a cardboard box comprising a rigid window made of a transparent material extending over at least two adjacent faces of the box comprising the steps following:
  • the invention differs from the prior art by:
  • the step of forming said blanks is performed by an abrasive disk.
  • the zone of formation of said blanks and / or grooving is heated.
  • the dust and chips are sucked up at the level of the formation zone of said longitudinal cuts.
  • the invention also relates to an equipment for the manufacture of a cardboard box comprising a rigid window made of a transparent material extending on at least two adjacent faces of the box comprising: - a suction band for moving a continuous width of rigid transparent plastic
  • transverse cutting station of said continuous width in a cross-sectional line passing through the middle of a row of longitudinal cuts
  • said forming station longitudinal cuts comprising abrasive discs.
  • the equipment according to the invention comprises a depth-adjustable carriage for alternately forming the longitudinal cuts and the grooving of the continuous width, said carriage being controlled by a programmable controller for synchronization with the movement. in advance of the width continues, depending on the length of the window.
  • the invention also relates to a cardboard box comprising a rigid window made of a transparent material extending over at least two adjacent faces of the box, said window having at least one groove extended on either side by a cutout characterized in that said cutouts have a length of between 20 and 35 millimeters and a width less than 3 millimeters, the cuts being distributed longitudinally with a pitch corresponding to the width of the window and laterally according to the widths of said adjacent faces.
  • said cutout has two parallel edges disposed on either side of the median axis of the corresponding groove and in that the length L of said cutout is between 1 and 1.1. 1.1 or 1 corresponds to the width of the peripheral gluing band
  • FIG. 1 represents an unfolded view of a carton according to the invention
  • FIG. 2 represents an enlarged view of zone A
  • FIG. 3 represents a schematic view of an equipment according to the invention. Description of the box according to the invention
  • the box according to the invention consists of a cardboard blank (100) on which is glued a transparent plastic window (50).
  • the cardboard blank (100) is cut and grooved to present four lateral faces (10, 20, 30, 40) extended by upper tabs (11, 21, 31, 41) and lower tabs (12, 22, 32, 42) forming the upper and lower bottoms when the box is shaped.
  • a side flap (13) closes the side faces by gluing.
  • the plastic sheet (50) is cold-grooved or hot-grooved by grooves (54, 55) facilitating the folding of the rigid relative plastic window when forming the assembly after bonding to the blank cardboard-based.
  • the window (50) has, at the ends of each groove (54, 55), a rectangular cut (57) extending from the peripheral edge of the window to the limit of the cut formed in the cardboard blank. .
  • the height of this cutout (57) is slightly greater than the width of the gluing surfaces (15, 25) where the plastic sheet (50) is superimposed on the cardboard blank (100).
  • the height of the cutout (57) is between once and 1.1 times the width of this superposition zone (15, 25), whose width is typically of the order of 12 millimeters.
  • the width of the cutout (57) is of the order of 1.5 millimeters for a window of small thickness, typically 3 millimeters.
  • Equipment for the manufacture of such boxes includes a vacuum conveyor belt (205) driving the continuous web (200) from an unwinder (201).
  • the Width width (200) is the width of the window.
  • a first station (210) comprises means for forming the cutting alignments by consecutive transverse series. These cuts have a double height of the final cut of a window (50), or 20 to 40 millimeters.
  • These cuts can be formed by abrasive discs rotating at high speed, more than 50000 revolutions per minute. They can also be formed by cutting with water jet, laser or any other means.
  • This station operates synchronously with the scroll of the width (200) to make a line of cuts (57) at regular intervals corresponding to the width of the window (50).
  • the abrasive disc is mounted on a depth-adjustable carriage to successively cut and groove the PVC window, and is synchronized with the coil feed movement, depending on the length of the window.
  • the forward speed of the width is controlled by a servomotor controlled by PLC to determine the pitch between each.
  • the next station (220) performs hot or cold grooving to form continuous grooves (54, 55) on the web (200). These lines pass through the longitudinal cuts made in the previous post (210).
  • the making of the cuts and grooving can be performed in one and the same position.
  • the width (200) thus cut and grooved then passes into a station (230) making a transverse cut to individualize the windows. These cuts pass in the middle of the alignments of longitudinal cuts.
  • the grooving station (220) can be located upstream or downstream of the cutting station (210).
  • a receiving station (240) stacks the prepared windows and a destacker retrieves them one by one to move them on a cardboard blank and make the collage.

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

Abstract

Method for producing a cardboard box comprising a rigid window made of a transparent material extending over at least two adjacent faces of the box, comprising the following steps:• -supplying a continuous width of rigid transparent plastic, the width of which corresponds to the deployed width of the window; • - forming in the said continuous width a succession of longitudinal cuts distributed longitudinally with a spacing corresponding to the width of the window and laterally according to the widths of the said adjacent faces.

Description

PROCEDE DE FABRICATION D'UNE BOITE EN CARTON  METHOD FOR MANUFACTURING A CARDBOARD BOX
Domaine de 1 ' invention Field of the invention
La présente invention concerne un procédé de fabrication de feuilles de recouvrement de fenêtres de boîtes d'emballage, une machine pour la fabrication automatique de telles boîtes d'emballage ainsi que les fenêtres ainsi réalisées et les boîtes d'emballage munies de telles fenêtres. The present invention relates to a method of manufacturing packaging box window covers, a machine for the automatic manufacture of such packaging boxes as well as the windows thus produced and the packaging boxes provided with such windows.
On connaît dans l'état de la technique divers types de boites d'emballage présentoirs munies de fenêtres recouvertes par des feuilles transparentes. De telles boîtes permettent une présentation effective de leur contenu. Various types of display packaging boxes with windows covered by transparent sheets are known in the state of the art. Such boxes allow an effective presentation of their content.
Etat de la technique State of the art
On connaît dans l'état de la technique le principe général de la fabrication de telles boîtes d'emballage. It is known in the state of the art the general principle of the manufacture of such packaging boxes.
Le brevet français, enregistré sous le FR8026305, décrit par exemple à une boîte de présentation comportant une ouverture chevauchant au moins une arête, cette ouverture est fermée par une feuille de matière plastique rigide transparente. The French patent, registered under FR8026305, for example describes a presentation box having an opening overlapping at least one edge, this opening is closed by a transparent rigid plastic sheet.
La fenêtre de matière plastique transparente présente des échancrures à l'extrémité des rainures correspondant aux arêtes de la boîte, de façon à ne pas faire coopérer les bords de la feuille avec les bourrelets de pliage du flanc de carton de la boîte. The transparent plastic window has indentations at the end of the grooves corresponding to the edges of the box, so as not to cooperate the edges of the sheet with the folding beads of the carton side of the box.
Le certificat d'addition déposé sous le FR8113025, concerne un procédé de fabrication de telles boîtes consistant à découper un flanc formant la boîte muni d'une ouverture, à disposer sur cette ouverture une feuille de matière plastique transparente plus grande que cette ouverture et à rainer cette feuille pour former les amorces de pliage. The certificate of addition filed under FR8113025, relates to a method of manufacturing such boxes consisting of cutting a side forming the box with an opening, to arrange on this opening a sheet of plastic greater transparency than this opening and to groove this sheet to form the folding primers.
Les boîtes ainsi obtenues présentent une rigidité supérieure aux boites connues antérieurement et comportant une feuille de matière plastique souple recouvrant la fenêtre. Elles sont, en particulier, remarquables en ce qu'il ne se forme pas de bourrelet, ni de déchirure au niveau du raccordement de la feuille et de la découpe en carton, sur les arêtes, grâce à la présence d'encoches s ' étendant au-delà du bord de la fenêtre. The boxes thus obtained have a rigidity greater than previously known boxes and comprising a flexible plastic sheet covering the window. They are, in particular, remarkable in that it does not form bead or tear at the connection of the sheet and the cardboard cut, on the edges, thanks to the presence of notches extending beyond the edge of the window.
Le brevet français FR2496052 décrit un autre exemple de fabrication de boites, par exemple parallélépipédiques , comprenant une fenêtre chevauchant au moins une arête de la boite. Suivant cette solution connue, la fenêtre est constituée par une ouverture du flan de carton fermée par une feuille en matière plastique rigide transparente. Les lignes de la feuille correspondant aux arêtes de la boite sont affaiblies et leurs extrémités sont échancrées en pour éviter que la feuille vienne chevaucher les bourrelets de pliage du flan. French patent FR 2496052 describes another example of manufacturing boxes, for example parallelepipedic, comprising a window overlapping at least one edge of the box. According to this known solution, the window is constituted by an opening of the cardboard blank closed by a transparent rigid plastic sheet. The lines of the sheet corresponding to the edges of the box are weakened and their ends are notched in order to prevent the sheet from overlapping the folding beads of the blank.
Le brevet français FR2632610 concerne un procédé de fabrication de feuilles de recouvrement de fenêtres de boîtes d'emballage chevauchant au moins une arête de la boîte. Le procédé consiste à découper dans un film de matière plastique transparente rigide des encoches, à coller sur le film ainsi préparé un film de matière plastique transparente souple et à découper dans ce matériau composite ainsi constitué des feuilles de recouvrement. French patent FR2632610 relates to a method of manufacturing packaging box window covers overlapping at least one edge of the box. The method comprises cutting into a rigid transparent plastic film notches, to be bonded to the film thus prepared a flexible transparent plastic film and to cut in the composite material thus formed sheets cover.
On connaît aussi le brevet français FR2638393 décrivant une découpe d'un flan transparent, pour la fabrication d'une boîte d'emballage à fenêtre, dont le corps est en carton. La bande transparente circule en continu jusqu'au tronçonnage final après découpages des encoches pour le pliage dans les angles du carton. Also known is the French patent FR2638393 describing a cutout of a transparent blank, for the manufacture of a window packaging box, the body is made of cardboard. The transparent strip is continuously circulated until the final cut after cutting the notches for folding in the corners of the carton.
Le brevet français FR2507155 décrit un autre exemple de boite transparente réalisée à partir d'un fourreau de polychlorure de vinyle et au moins un fourreau de carton muni de pattes pour la fermeture d'une extrémité du tube transparent. L'assemblage par collage des deux fourreaux permet d'obtenir un fourreau transparent et un fond opaque. La demande de brevet DE9012578 concerne une boîte pliante avec une partie de corps en carton avec une ouverture de fenêtre avec une insertion, étendant sur au moins deux lignes de pliage, à l'intérieur de la fenêtre d'un transparent, rigide, constitué d'un film de fenêtre en matière plastique dont la résistance structurelle sensiblement égale à celle de la boîte en carton et avec l'environnement de fenêtre forme une première zone de recouvrement en forme de cadre, dans lequel la feuille de fenêtre est reliée fixement au boîtier, dans lequel la feuille de fenêtre étend dans la direction des lignes de pliage sur au moins un côté de la fenêtre dans une seconde zone de chevauchement dans laquelle la feuille de fenêtre n'a aucun lien avec la boîte en carton et est également situé de chaque côté de deux lignes de pliage, et dans lequel la partie du corps à l'intérieur de la seconde zone de chevauchement non liée une ligne de faiblesse située dans un boîtier comportant. French Patent FR2507155 describes another example of transparent box made from a polyvinyl chloride sleeve and at least one cardboard sleeve provided with tabs for closing one end of the transparent tube. The assembly by gluing of the two sleeves makes it possible to obtain a transparent sheath and an opaque bottom. The patent application DE9012578 relates to a folding box with a cardboard body part with a window opening with an insertion, extending on at least two fold lines, inside the window of a transparent, rigid, consisting of a plastic window film whose structural strength substantially equal to that of the cardboard box and with the window environment forms a first frame-shaped covering area, in which the window sheet is fixedly connected to the housing , wherein the window sheet extends in the direction of the fold lines on at least one side of the window in a second overlap area in which the window sheet has no connection with the cardboard box and is also located from each side of two fold lines, and wherein the body portion within the second unbound overlapping zone a line of weakness within a housing comprising.
Inconvénients de l'art antérieur Disadvantages of prior art
Les solutions de l'art antérieur conduisent à la formation d'une découpe à la jonction de la fenêtre et du carton très visible et disgracieuse. Ces découpes présentent généralement une forme de triangulaire. Par ailleurs, la position de cette découpe triangulaire se traduit par une variation visible de la base de la découpe, en fonction de la précision de la position de la fenêtre par rapport au carton. The solutions of the prior art lead to the formation of a cut at the junction of the window and very visible and unsightly cardboard. These cuts generally have a triangular shape. Moreover, the position of this triangular cutout is reflected in a visible variation of the base of the cut, according to the accuracy of the position of the window relative to the cardboard.
Si la position de la fenêtre n'est pas parfaitement centrée par rapport à la lumière formée dans le carte, la différence de largeur des bases des découpes triangulaires d'un coté et de l'autre est nettement visible et donne une apparence de mauvaise qualité. If the position of the window is not perfectly centered with respect to the light formed in the card, the difference in width of the bases of the triangular cutouts on one side and the other is clearly visible and gives an appearance of poor quality. .
Par ailleurs, pour des boites de petites dimensions, les découpes triangulaires réduisent la surface de collage de la fenêtre sur le carton. In addition, for boxes of small dimensions, the triangular cuts reduce the bonding surface of the window on the cardboard.
Solution apportée par l'invention Solution provided by the invention
Afin de remédier à ces inconvénients, l'invention concerne selon son acception la plus générale un procédé de fabrication d'une boîte en carton comportant une fenêtre rigide en un matériau transparent s 'étendant sur au moins deux faces adjacentes de la boîte comprenant les étapes suivantes : In order to remedy these drawbacks, the invention relates, in its most general sense, to a method of manufacturing a cardboard box comprising a rigid window made of a transparent material extending over at least two adjacent faces of the box comprising the steps following:
- alimentation d'une laize continue de plastique rigide transparente dont la largeur correspond à la largeur déployée de la fenêtre ; - formation dans ladite laize continue d'une succession de découpes longitudinales d'une longueur comprise entre 20 et 35 millimètres et d'une largeur inférieure à 3 millimètres, les découpes étant réparties longitudinalement avec un pas correspondant à la largeur de la fenêtre et latéralement en fonction des largeurs desdites faces adjacentes feeding a continuous width of transparent rigid plastic whose width corresponds to the expanded width of the window; forming in said continuous width a succession of longitudinal cuts having a length of between 20 and 35 millimeters and a width of less than 3 millimeters, the cuts being distributed longitudinally with a pitch corresponding to the width of the window and laterally according to the widths of said adjacent faces
- formation sur ladite laize continue d'au moins une ligne de rainure longitudinale passant par l'axe longitudinal médian desdites découpes longitudinales - découpage de ladite laize, pour individualiser les fenêtres, selon une ligne de coupe transversale passant par le milieu d'une rangée de découpes longitudinales application d'une ou de plusieurs pièces de fenêtre sur des flans en carton, l'adhésif sur chacune desdites une ou plusieurs pièces de fenêtre étant en contact avec un carton compact associé, et lesdites lignes de rainure étant alignées avec une les lignes de rainure dudit carton associé . L'invention se distingue de l'art antérieur par : forming on said continuous width at least one longitudinal groove line passing through the median longitudinal axis of said longitudinal cuts - Cutting said width, to individualize the windows, according to a cross-sectional line passing through the middle of a row of longitudinal cuts application of one or more window parts on cardboard blanks, the adhesive on each of said one or more window pieces being in contact with an associated carton, and said groove lines being aligned with a groove lines of said associated carton. The invention differs from the prior art by:
- Un choix dimensionnel de la taille des découpes permettant de concilier les deux contraintes (découpes peu visibles, mais assurant leur fonction de permettre le pliage au niveau du raccordement de deux matériaux ayant des caractéristiques mécaniques très différentes) - A dimensional choice of the size of the cuts to reconcile the two constraints (not very visible cuts, but ensuring their function to allow folding at the connection of two materials with very different mechanical characteristics)
- Une succession d'étape prévoyant la formation des découpes et le rainurage de la feuille en plastique transparente avant la découpe des fenêtres. - A succession of steps providing for the formation of the blanks and the grooving of the transparent plastic sheet before cutting the windows.
De préférence, l'étape de formation desdites découpes est réalisé par un disque abrasif. Preferably, the step of forming said blanks is performed by an abrasive disk.
Avantageusement, la zone de formation desdites découpes et/ou de rainurage est chauffée. Advantageously, the zone of formation of said blanks and / or grooving is heated.
Selon une variante, on procède à une aspiration des poussières et copeaux au niveau de la zone de formation desdites découpes longitudinales. According to a variant, the dust and chips are sucked up at the level of the formation zone of said longitudinal cuts.
L'invention concerne aussi un équipement pour la fabrication d'une boîte en carton comportant une fenêtre rigide en un matériau transparent s 'étendant sur au moins deux faces adjacentes de la boîte comprenant : - une bande aspirante pour le déplacement d'une laize continue de plastique transparent rigide The invention also relates to an equipment for the manufacture of a cardboard box comprising a rigid window made of a transparent material extending on at least two adjacent faces of the box comprising: - a suction band for moving a continuous width of rigid transparent plastic
- un poste de formation dans ladite laize continue d'une succession de découpes longitudinales d'une longueur comprise entre 20 et 35 millimètres et d'une largeur inférieure à 15 millimètres, les découpes étant réparties longitudinalement avec un pas correspondant à la largeur de la fenêtre et latéralement en fonction des largeurs desdites faces adjacentes - un poste de rainurage de ladite laize continue - a training station in said continuous width of a succession of longitudinal cuts having a length of between 20 and 35 millimeters and a width of less than 15 millimeters, the cuts being distributed longitudinally with a pitch corresponding to the width of the window and laterally according to the widths of said adjacent faces - a grooving station of said continuous width
- un poste de découpe transversale de ladite laize continue selon une ligne de coupe transversale passant par le milieu d'une rangée de découpes longitudinales a transverse cutting station of said continuous width in a cross-sectional line passing through the middle of a row of longitudinal cuts;
- un poste d'application d'une ou de plusieurs pièces de fenêtre sur des flans en carton, l'adhésif sur chacune desdites une ou plusieurs pièces de fenêtre étant en contact avec un carton compact associé, et lesdites lignes de rainure étant alignées avec une les lignes de rainure dudit carton associé. De préférence ledit poste de formation des découpes longitudinales comprenant des disques abrasifs. a station for applying one or more window pieces to cardboard blanks, the adhesive on each of said one or more window pieces being in contact with an associated carton, and said groove lines being aligned with a groove lines of said associated carton. Preferably said forming station longitudinal cuts comprising abrasive discs.
Selon un mode de réalisation particulier, l'équipement selon l'invention comporte un chariot réglable en profondeur pour réaliser alternativement la formation des découpes longitudinales et le rainurage de la laize continue, ledit chariot étant commandé par un automate programmable pour une synchronisation avec le mouvement d'avance de la laize continue, en fonction de la longueur de la fenêtre. According to a particular embodiment, the equipment according to the invention comprises a depth-adjustable carriage for alternately forming the longitudinal cuts and the grooving of the continuous width, said carriage being controlled by a programmable controller for synchronization with the movement. in advance of the width continues, depending on the length of the window.
L'invention concerne aussi une boite en carton comportant une fenêtre rigide en un matériau transparent s 'étendant sur au moins deux faces adjacentes de la boîte, ladite fenêtre présentant au moins une rainure prolongée de part et d'autre par une découpe caractérisée en ce que lesdites découpes présentent une longueur comprise entre 20 et 35 millimètres et d'une largeur inférieure à 3 millimètres, les découpes étant réparties longitudinalement avec un pas correspondant à la largeur de la fenêtre et latéralement en fonction des largeurs desdites faces adjacentes. The invention also relates to a cardboard box comprising a rigid window made of a transparent material extending over at least two adjacent faces of the box, said window having at least one groove extended on either side by a cutout characterized in that said cutouts have a length of between 20 and 35 millimeters and a width less than 3 millimeters, the cuts being distributed longitudinally with a pitch corresponding to the width of the window and laterally according to the widths of said adjacent faces.
Avantageusement, ladite découpe présente deux bords parallèles disposés de part et d'autre de l'axe médian de la rainure correspondante et en ce que la longueur L de ladite découpe est comprise entre 1 et 1,1. 1,1 ou 1 correspond à la largeur de la bande périphérique de collage Advantageously, said cutout has two parallel edges disposed on either side of the median axis of the corresponding groove and in that the length L of said cutout is between 1 and 1.1. 1.1 or 1 corresponds to the width of the peripheral gluing band
Description détaillée d'un exemple non limitatif de Detailed description of a non-limiting example of
1 ' invention  The invention
La présente invention sera mieux comprise à la lecture de la description détaillée d'exemples non limitatifs de réalisation se référant aux dessins annexés où : la figure 1 représente une vue dépliée d'un carton selon l'invention The present invention will be better understood on reading the detailed description of nonlimiting examples of embodiment with reference to the accompanying drawings in which: FIG. 1 represents an unfolded view of a carton according to the invention
- la figure 2 représente une vue agrandie de la zone A FIG. 2 represents an enlarged view of zone A
- la figure 3 représente une vue schématique d'un équipement selon l'invention. Description de la boîte selon l'invention FIG. 3 represents a schematic view of an equipment according to the invention. Description of the box according to the invention
La boîte selon l'invention est constituée par un flan en carton (100) sur lequel est collée une fenêtre en plastique transparent (50). Le flan en carton (100) est découpé et rainuré pour présenter quatre faces latérales (10, 20, 30, 40) prolongés par des pattes supérieures (11, 21, 31, 41) et des pattes inférieures (12, 22, 32, 42) formant les fonds supérieur et inférieur lorsque la boite est mise en forme. Un rabat latéral (13) permet de fermer les faces latérales par collage. The box according to the invention consists of a cardboard blank (100) on which is glued a transparent plastic window (50). The cardboard blank (100) is cut and grooved to present four lateral faces (10, 20, 30, 40) extended by upper tabs (11, 21, 31, 41) and lower tabs (12, 22, 32, 42) forming the upper and lower bottoms when the box is shaped. A side flap (13) closes the side faces by gluing.
Sur ce flan découpé (100) est collé une fenêtre en PVC ou PET, recouvrant la face principale (20) par une zone centrale (52) et recouvrant partiellement les faces latérales (10, 30) par des zones latérales respectivement (41, 53). On this cut blank (100) is adhered a PVC or PET window, covering the main face (20) by a central zone (52) and partially covering the lateral faces (10, 30) by lateral zones respectively (41, 53 ).
La feuille de matière plastique (50) est rainée à froid ou à chaud par des rainures (54, 55) facilitant le pliage de la fenêtre en plastique, relative rigide, lors de la mise en forme de l'ensemble après collage sur le flan en carton. The plastic sheet (50) is cold-grooved or hot-grooved by grooves (54, 55) facilitating the folding of the rigid relative plastic window when forming the assembly after bonding to the blank cardboard-based.
La fenêtre (50) présente, aux extrémités de chaque rainure (54, 55), une découpe (57) de forme rectangulaire s 'étendant depuis le bord périphérique de la fenêtre jusqu'à la limite de la découpe formée dans le flan en carton. La hauteur de cette découpe (57) est légèrement supérieure à la largeur des surfaces de collage (15, 25) où la feuille plastique (50) est superposée au flan en carton (100). Typiquement, la hauteur de la découpe (57) est comprise entre une fois et 1,1 fois la largeur de cette zone de superposition (15, 25), dont la largeur est typiquement de l'ordre de 12 millimètres. La largeur de la découpe (57) est de l'ordre de 1,5 millimètres pour une fenêtre de faible épaisseur, typiquement 3 millimètres. The window (50) has, at the ends of each groove (54, 55), a rectangular cut (57) extending from the peripheral edge of the window to the limit of the cut formed in the cardboard blank. . The height of this cutout (57) is slightly greater than the width of the gluing surfaces (15, 25) where the plastic sheet (50) is superimposed on the cardboard blank (100). Typically, the height of the cutout (57) is between once and 1.1 times the width of this superposition zone (15, 25), whose width is typically of the order of 12 millimeters. The width of the cutout (57) is of the order of 1.5 millimeters for a window of small thickness, typically 3 millimeters.
Description l'équipement selon l'invention Description the equipment according to the invention
L'équipement pour la fabrication de telles boîtes comprend un tapis transporteur (205) à dépression entraînant la laize continue (200) provenant d'un dérouleur (201). La largeur de la laize (200) correspond à la largeur de la fenêtre . Equipment for the manufacture of such boxes includes a vacuum conveyor belt (205) driving the continuous web (200) from an unwinder (201). The Width width (200) is the width of the window.
Un premier poste (210) comprend des moyens pour former les alignements de découpes, par des séries transversales consécutives. Ces découpes présentent une hauteur double de la découpe finale d'une fenêtre (50), soit de 20 à 40 millimètres. A first station (210) comprises means for forming the cutting alignments by consecutive transverse series. These cuts have a double height of the final cut of a window (50), or 20 to 40 millimeters.
Ces découpes peuvent être formés par des disques abrasifs tournant à haute vitesse, plus de 50000 tours par minutes. Elles peuvent aussi être formées par découpe à jet d'eau, laser ou tout autre moyen. These cuts can be formed by abrasive discs rotating at high speed, more than 50000 revolutions per minute. They can also be formed by cutting with water jet, laser or any other means.
Ce poste fonctionne de manière synchrone avec le défilement de la laize (200) pour réaliser une ligne de découpes (57) à des pas réguliers correspondant à la largeur de la fenêtre (50). This station operates synchronously with the scroll of the width (200) to make a line of cuts (57) at regular intervals corresponding to the width of the window (50).
Le disque abrasif est monté sur un chariot réglable en profondeur pour réaliser successivement la découpe et la rainure de la fenêtre PVC, et est synchronisé avec le mouvement d'avance de la bobine, en fonction de la longueur de la fenêtre. The abrasive disc is mounted on a depth-adjustable carriage to successively cut and groove the PVC window, and is synchronized with the coil feed movement, depending on the length of the window.
La vitesse d'avancement de la laize est asservie par un servomoteur piloté par automate programmable afin de déterminer le pas entre chaque. The forward speed of the width is controlled by a servomotor controlled by PLC to determine the pitch between each.
Le poste suivant (220) réalise le rainurage à chaud ou à froid pour former sur la laize (200) les lignes rainurées (54, 55) en continu. Ces lignes passent par les découpes longitudinales réalisées dans le poste précédent (210). The next station (220) performs hot or cold grooving to form continuous grooves (54, 55) on the web (200). These lines pass through the longitudinal cuts made in the previous post (210).
Eventuellement, la réalisation des découpes et le rainurage peuvent être réalisés dans un seul et même poste. La laize (200) ainsi découpée et rainurée passe ensuite dans un poste (230) réalisant une découpe transversale pour individualiser les fenêtres. Ces découpes passent au milieu des alignements de découpes longitudinales. II est à noter que le poste de rainurage (220) peut être situé en amont ou en aval du poste de découpe (210). Optionally, the making of the cuts and grooving can be performed in one and the same position. The width (200) thus cut and grooved then passes into a station (230) making a transverse cut to individualize the windows. These cuts pass in the middle of the alignments of longitudinal cuts. It should be noted that the grooving station (220) can be located upstream or downstream of the cutting station (210).
Ensuite, un poste récepteur (240) empile les fenêtres préparées et un dépileur les récupère une à une pour les déplacer sur un flan en carton et réaliser le collage. Then, a receiving station (240) stacks the prepared windows and a destacker retrieves them one by one to move them on a cardboard blank and make the collage.

Claims

Revendications claims
1 — Procédé de fabrication d'une boite en carton comportant une fenêtre rigide en un matériau transparent s 'étendant sur au moins deux faces adjacentes (10, 20, 30) de la boite comprenant les étapes suivantes : alimentation d'une laize (200) continue de plastique rigide transparente dont la largeur correspond à la largeur déployée de la fenêtre (50) ; 1 - A method of manufacturing a cardboard box comprising a rigid window of a transparent material extending on at least two adjacent faces (10, 20, 30) of the box comprising the following steps: feeding a width (200 ) a rigid transparent plastic film whose width corresponds to the expanded width of the window (50);
- formation dans ladite laize (200) continue d'une succession de découpes longitudinales (57) réparties longitudinalement avec un pas correspondant à la largeur de la fenêtre (50) et latéralement en fonction des largeurs desdites faces adjacentes forming in said continuous width (200) a succession of longitudinal cuts (57) distributed longitudinally with a pitch corresponding to the width of the window (50) and laterally as a function of the widths of said adjacent faces
- formation sur ladite laize (200) continue d'au moins une ligne de rainure longitudinale, passant par l'axe longitudinal médian desdites découpes longitudinales découpage de ladite laize (200), pour individualiser les fenêtres (50), selon une ligne de coupe transversale passant par le milieu d'une rangée de découpes longitudinales application d'une ou de plusieurs pièces de fenêtre (50) sur des flans en carton, l'adhésif sur chacune desdites une ou plusieurs pièces de fenêtre (50) étant en contact avec un carton compact associé, et lesdites lignes de rainure étant alignées avec une des lignes de rainure dudit carton associé. forming on said continuous width (200) at least one longitudinal groove line, passing through the median longitudinal axis of said longitudinal cutouts of said width (200), to individualize the windows (50), along a line of cut cross-section passing through the middle of a row of longitudinal cuts applying one or more window pieces (50) to cardboard blanks, the adhesive on each of said one or more window pieces (50) being in contact with an associated compact carton, and said groove lines being aligned with one of the groove lines of said associated carton.
2 — Procédé de fabrication d'une boite en carton comportant une fenêtre (50) rigide selon la revendication 1 caractérisé en ce que l'étape de formation desdites découpes longitudinales est réalisé par un disque abrasif. 3 — Procédé de fabrication d'une boîte en carton comportant une fenêtre (50) rigide selon la revendication précédente caractérisé en ce que la zone de formation desdites découpes est chauffée. 4 — Procédé de fabrication d'une boîte en carton comportant une fenêtre (50) rigide selon la revendication 1 caractérisé en ce que l'on procède à une aspiration des poussières et copeaux au niveau de la zone de formation desdites découpes longitudinales. 5 — Procédé de fabrication d'une boîte en carton comportant une fenêtre (50) rigide selon la revendication 1 caractérisé en ce que lesdites découpes longitudinales (57) présentent une longueur comprise entre 20 et 35 millimètres et d'une largeur inférieure à 3 millimètres. 6 — Equipement pour la fabrication d'une boîte en carton comportant une fenêtre (50) rigide en un matériau transparent s 'étendant sur au moins deux faces adjacentes de la boîte comprenant : 2 - A method of manufacturing a cardboard box having a window (50) rigid according to claim 1 characterized in that the step of forming said longitudinal cuts is performed by an abrasive disc. 3 - A method of manufacturing a cardboard box having a window (50) rigid according to the preceding claim characterized in that the forming zone of said blanks is heated. 4 - A method of manufacturing a cardboard box having a window (50) rigid according to claim 1 characterized in that one proceeds to an aspiration dust and chips at the area of formation of said longitudinal cuts. 5 - A method of manufacturing a cardboard box having a window (50) rigid according to claim 1 characterized in that said longitudinal cuts (57) have a length of between 20 and 35 millimeters and a width of less than 3 millimeters . 6 - Equipment for the manufacture of a cardboard box comprising a rigid window (50) made of a transparent material extending on at least two adjacent faces of the box comprising:
- une bande aspirante pour le déplacement d'une laize (200) continue de plastique transparent rigide a suction band for moving a continuous width (200) of rigid transparent plastic
- un poste de formation dans ladite laize continue d'une succession de découpes longitudinales réparties longitudinalement avec un pas correspondant à la largeur de la fenêtre (50) et latéralement en fonction des largeurs desdites faces adjacentes a formation station in said continuous width of a succession of longitudinal cuts distributed longitudinally with a pitch corresponding to the width of the window (50) and laterally as a function of the widths of said adjacent faces;
- un poste de rainurage de ladite laize continue - a grooving station of said continuous width
- un poste de découpe transversale de ladite laize continue selon une ligne de coupe transversale passant par le milieu d'une rangée de découpes longitudinales - un poste d'application d'une ou de plusieurs pièces de fenêtre (50) sur des flans en carton, l'adhésif sur chacune desdites une ou plusieurs pièces de fenêtre (50) étant en contact avec un carton compact associé, et lesdites lignes de rainure étant alignées avec une des lignes de rainure dudit carton associé. a transverse cutting station of said continuous width in a cross-sectional line passing through the middle of a row of longitudinal cuts; an application station for one or more window pieces (50) on cardboard blanks, the adhesive on each of said one or more window pieces (50) being in contact with an associated carton, and said groove lines being aligned with one of the groove lines of said associated carton.
7 — Equipement pour la fabrication d'une boîte en carton selon la revendication précédente caractérisé en ce que ledit poste de formation des découpes longitudinales comprend des disques abrasifs. 7 - Equipment for the manufacture of a cardboard box according to the preceding claim characterized in that said forming station of the longitudinal cuts comprises abrasive discs.
8 — Equipement pour la fabrication d'une boîte en carton selon la revendication 6 caractérisé en ce qu'il comporte un chariot réglable en profondeur pour réaliser alternativement la formation des découpes longitudinales et le rainurage de la laize continue, ledit chariot étant commandé par un automate programmable pour une synchronisation avec le mouvement d'avance de la laize continue, en fonction de la longueur de la fenêtre (50). 8 - Equipment for the manufacture of a cardboard box according to claim 6 characterized in that it comprises a depth adjustable carriage to alternately achieve the formation of longitudinal cuts and the grooving of the continuous width, said carriage being controlled by a programmable controller for synchronization with the forward motion of the continuous width, depending on the length of the window (50).
9 - Equipement pour la fabrication d'une boîte en carton selon la revendication 6 caractérisé en ce ledit poste de formation découpe dans ladite laize une succession de découpes longitudinales d'une longueur comprise entre 20 et 35 millimètres, les découpes réparties longitudinalement avec un pas correspondant à la largeur de la fenêtre (50) et latéralement en fonction des largeurs desdites faces adjacentes . 9 - Equipment for the manufacture of a cardboard box according to claim 6 characterized in that said forming station cuts in said width a succession of longitudinal cuts of a length between 20 and 35 millimeters, the cuts distributed longitudinally with a step corresponding to the width of the window (50) and laterally depending on the widths of said adjacent faces.
10 — Boîte en carton comportant une fenêtre (50) rigide en un matériau transparent s 'étendant sur au moins deux faces adjacentes de la boîte, ladite fenêtre (50) présentant au moins une rainure prolongée de part et d'autre par une découpe caractérisé en ce que lesdites découpes sont réparties longitudinalement avec un pas correspondant à la largeur de la fenêtre (50) et latéralement en fonction des largeurs desdites faces adjacentes. 10 - Carton box having a window (50) rigid in a transparent material extending over at least two adjacent faces of the box, said window (50) having at least one groove extended on either side by a cut characterized in that said cutouts are distributed longitudinally with a pitch corresponding to the width of the window (50) and laterally depending on the widths of said adjacent faces.
11 - Boite en carton comportant une fenêtre (50) rigide en un matériau transparent selon la revendication précédente caractérisée en ce que ladite découpe présente deux bords parallèles disposés de part et d'autre de l'axe médian de la rainure correspondante et en ce que la longueur L de ladite découpe est comprise entre 1 et 1,1. 1,1 ou 1 correspond à la largeur de la bande périphérique de collage. 11 - Cardboard box comprising a window (50) rigid in a transparent material according to the preceding claim characterized in that said cutout has two parallel edges disposed on either side of the median axis of the corresponding groove and in that the length L of said blank is between 1 and 1.1. 1.1 or 1 corresponds to the width of the peripheral gluing band.
12 — Boîte en carton selon la revendication 10 caractérisé en ce que lesdites découpes présentent une longueur comprise entre 20 et 35 millimètres et d'une largeur inférieure à 3 millimètres. 12 - Cardboard box according to claim 10 characterized in that said cuts have a length of between 20 and 35 millimeters and a width of less than 3 millimeters.
EP17734796.0A 2016-06-16 2017-06-12 Method for producing a cardboard box Active EP3472056B1 (en)

Applications Claiming Priority (2)

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FR1655587A FR3052702B1 (en) 2016-06-16 2016-06-16 METHOD FOR MANUFACTURING A CARDBOARD BOX
PCT/FR2017/051489 WO2017216457A1 (en) 2016-06-16 2017-06-12 Method for producing a cardboard box

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EP3472056B1 EP3472056B1 (en) 2021-01-13

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EP (1) EP3472056B1 (en)
CN (1) CN109311556A (en)
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CN117184606B (en) * 2023-11-07 2024-03-01 浙江夕尔科技有限公司 Packaging box, blank and manufacturing method thereof

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US3199670A (en) * 1962-04-30 1965-08-10 Monsanto Co Container
US3292513A (en) * 1963-09-30 1966-12-20 Monsanto Chemicals Apparatus and method for scoring synthetic plastic sheet material
US3301143A (en) * 1963-12-26 1967-01-31 Monsanto Co Method and apparatus for folding containers having a window of synthetic plastic sheet material
US5540645A (en) * 1981-12-10 1996-07-30 Dupuy; Francois Display boxes
FR2496052A1 (en) 1980-12-11 1982-06-18 Dupuy Eng Sa METHOD AND DEVICE FOR MANUFACTURING A PRESENTATION BOX AND BOX THUS OBTAINED
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
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
FR2632610B3 (en) * 1988-06-10 1990-10-19 Dupuy Eng Sa METHOD FOR MANUFACTURING SHEETS FOR COVERING WINDOWS FROM FOLDABLE DISPLAY BOXES, WINDOWS MADE THEREOF AND PACKAGING BOXES PROVIDED WITH SUCH WINDOWS
FR2638393A1 (en) * 1988-10-14 1990-05-04 Reine Bernard METHOD AND DEVICE FOR MANUFACTURING A CARTON BOX WITH TRANSPARENT WINDOW, AND PACKAGING BOX THUS MANUFACTURED
DE9012578U1 (en) * 1990-09-03 1991-01-03 Seufert, Thorsten, 6056 Heusenstamm Folding box with a cardboard body and an inserted window film
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US10232579B2 (en) * 2015-07-31 2019-03-19 Jeffrey Allen SHAFFER Apparatus for the placement of a second material piece on a paperboard cutout and methods thereof

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FR3052702B1 (en) 2018-06-01
CN109311556A (en) 2019-02-05
WO2017216457A1 (en) 2017-12-21
US20190329931A1 (en) 2019-10-31
EP3472056B1 (en) 2021-01-13

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