EP0978371A1 - Method of reinforcing the load carrying sidewalls of trays of corrugated cardboard and tray so obtained - Google Patents

Method of reinforcing the load carrying sidewalls of trays of corrugated cardboard and tray so obtained Download PDF

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Publication number
EP0978371A1
EP0978371A1 EP99401918A EP99401918A EP0978371A1 EP 0978371 A1 EP0978371 A1 EP 0978371A1 EP 99401918 A EP99401918 A EP 99401918A EP 99401918 A EP99401918 A EP 99401918A EP 0978371 A1 EP0978371 A1 EP 0978371A1
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EP
European Patent Office
Prior art keywords
flap
wall
walls
bottom wall
packaging
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
EP99401918A
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German (de)
French (fr)
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EP0978371B1 (en
Inventor
Claude Dixneuf
Alain Meurant
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Smurfit Socar SA
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Smurfit Socar SA
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Publication of EP0978371A1 publication Critical patent/EP0978371A1/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
    • 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
    • B65D5/001—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 stackable
    • B65D5/0015—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 stackable the container being formed by folding up portions connected to a central panel
    • B65D5/002—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 stackable the container being formed by folding up portions connected to a central panel having integral corner posts
    • B65D5/0025—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 stackable the container being formed by folding up portions connected to a central panel having integral corner posts the corner posts being formed as a prolongation of a doubled-over extension of the side walls
    • 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
    • B31B2105/0024—Making boxes having all side walls attached to the bottom
    • 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
    • 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
    • B31B2120/50—Construction of rigid or semi-rigid containers covered or externally reinforced
    • 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

Definitions

  • the present invention relates to a method of reinforcement of the stacking resistance of the walls carrying a corrugated packaging and a conditioning obtained by this process.
  • the flutes of the corrugated cardboard must be oriented vertically in the walls side and in the flaps and therefore the double discharge lines must be oriented in a direction perpendicular to the cardboard grooves.
  • These double delivery lines are made by marking on the cardboard blank from which the packaging comes, two very close parallel fold lines. In the packaging in the assembled state, the narrow strip defined between the two fold lines is in principle straight and contained in a horizontal plane.
  • this strip has an irregular profile, due to the fact that poorly controlled crushing of corrugated cardboard flutes on the discharge lines.
  • this band is often curled or has a certain degree of warping. It follows that when several packaging is stacked, the compression force may to exercise only on certain discrete points of the edge upper side walls. At these points, the side walls may buckle or show some fatigue which reduces its resistance to stacking.
  • the flap has a height exactly equal to that of the side wall, so that its bottom edge reaches the same level as the underside of the bottom wall. he as a result that when several packages are stacked, the side wall and the flap of each are supported on the side wall and the flap of the underlying packaging.
  • the compression force is therefore equally distributed between the side wall and the flap and is exerted uniformly on the entire length of these.
  • the invention also relates to a packaging obtained by the method described above.
  • the blank portion 20 comprises a bottom wall 22 on which a flap 24 is articulated by a fold line 26.
  • the fold line is formed on the face of the blank intended to be inside the packaging, and which is the visible side in FIG. 1.
  • the shutter has a width L which is twice the height h of the box that we want to make.
  • a half-cut 28 is made which cuts the cardboard over its entire thickness with the exception of the outer cover sheet 18.
  • the section 28 defines on the shutter a side wall 30 articulated to the bottom wall 22 by the fold line 26 and a flap 32 which is attached to the side wall only by the line 34 not cut from the outer cover sheet 18.
  • the fold line 26 and the cut 28 are perpendicular to the direction of the grooves 35.
  • Figure 3 shows how the blank is folded: the flap 24 to bring it into position perpendicular to the bottom wall 22, by folding around the fold line 26, then fold the flap 32 outward around the connecting line 34. The flap is then glued to the face exterior of the side wall.
  • the section 28 is straight, we obtain at the upper part of the side wall and the flap a very regular, flat and horizontal cutting surface 36 on its entire length.
  • the lower edge 27 of the flap is is at exactly the same level as that of the face lower 40 of the bottom wall. It results from these two characteristics only if several packages are stacked, the compressive force is distributed equally over the side wall and the flap of each package and evenly along the length of these elements. The packaging therefore has good compressive strength higher than that of wrapped packaging internally.
  • FIG. 4 shows the blank 50 from which is made the set.
  • This blank is substantially rectangular and comprises a central bottom wall 52 of square shape or rectangular, two longitudinal walls 54, 56 articulated by fold lines 58, 60 along two sides parallels of the bottom wall and two flaps 62, 64 articulated by fold lines 66, 68 along the two other sides of the bottom wall.
  • the flaps 62, 64 have a width greater than or equal to twice that of the walls longitudinal 54, 56.
  • rectilinear slots 70, 72 and 74, 76 are formed from the two longitudinal edges of the blank, in alignment with the fold lines 66, 68 and over a distance d substantially equal to twice the width l of the longitudinal walls.
  • the flaps 62, 64 are shared by half-cut sections 78, 80, in strips 82, 84 and 86, 88 of equal width l .
  • the strips 82, 84 are separated at their ends by incisions 90, 92, the same length as the slots 70, 72.
  • the inner legs 94, 98, i.e. those associated with the band interior 82, can be folded along lines of folding 102, 104 passing through the ends of the slots 70, 72.
  • fold lines 106, 108 aligned with fold lines longitudinal 58, 60. These fold lines define at ends of legs, external fixing tabs 110, 112.
  • fold lines 114, 116 parallel to fold lines 102, 104 and which define, on both sides, corner elements 118, 120 and fixing tabs internal 122, 124.
  • U-shaped incisions are made on the band outer 84, from the half-cut section 78, from so as to release centering pins 126, 128.
  • recesses 130, 132 of shape complementary to that of pins are drilled in the inner band 82, along the transverse fold line 66. These recesses are intended to receive the pins of a packaging inferior.
  • the packaging tray is shaped as follows: we start by erecting the flaps 62, 64 perpendicular to the bottom wall 52 by folding around fold lines 66, 68, then fold the strips 84, 88 outwards, by folding around the half-cuts 78, 80 to apply against the face exterior of interior strips 82, 86. The strips outside are glued on the inside strips.
  • This tray is particularly resistant because it has two transverse load-bearing walls each formed of two cardboard thicknesses and also because the ends longitudinal walls are sandwiched between the interior tabs and exterior tabs.

Abstract

The procedure consists of making a straight cut (28) through the layers (14, 16) of the side wall flap, leaving only the outer layer (18) uncut. When the side wall is folded upwards relative to the base (22) of the tray along fold line (26) its upper section (32) above the cut is folded over outwards and glued to give a wall of double thickness with the corrugated cardboard channels running vertically through it. The position of the cut (28) is selected so that the free edge (27) of the outer section lies flush with the underside (40) of the tray base when folded.

Description

DOMAINE DE L'INVENTIONFIELD OF THE INVENTION

La présente invention concerne un procédé de renforcement de la résistance au gerbage des parois porteuses d'un conditionnement en carton ondulé et un conditionnement obtenu par ce procédé.The present invention relates to a method of reinforcement of the stacking resistance of the walls carrying a corrugated packaging and a conditioning obtained by this process.

ETAT ANTERIEUR DE LA TECHNIQUEPRIOR STATE OF THE ART

Il est connu de renforcer la résistance au gerbage des parois porteuses d'un conditionnement en carton ondulé en repliant ou en rembordant vers l'intérieur du conditionnement des rabats qui sont articulés sur le bord supérieur des parois porteuses par des doubles lignes de refoulement. Ces rabats qui ont une largeur sensiblement égale à la hauteur des parois, viennent s'appliquer sur la paroi intérieure de ces dernières et leur bord libre inférieur se cale contre la paroi de fond du conditionnement. L'épaisseur des parois se trouve ainsi doublée sur toute la hauteur.It is known to strengthen the stacking resistance of load-bearing walls of a corrugated cardboard packaging in folding or folding inward packaging of the flaps which are hinged on the edge upper load-bearing walls by double lines of repression. These flaps which have a width substantially equal to the height of the walls, are applied on the inner wall of the latter and their free edge lower wedges against the bottom wall of the conditioning. The thickness of the walls is thus doubled over the entire height.

Pour donner le maximum de résistance à la compression aux parois transversales, les cannelures du carton ondulé doivent être orientées dans le sens vertical dans les parois latérales et dans les rabats et par conséquent les doubles lignes de refoulement doivent être orientées dans une direction perpendiculaire aux cannelures du carton. Ces doubles lignes de refoulement sont réalisées en marquant sur le flan de carton dont est issu le conditionnement, deux lignes de pliage parallèles très rapprochées. Dans le conditionnement à l'état monté, l'étroite bande définie entre les deux lignes de pliage est en principe rectiligne et contenue dans un plan horizontal.To give maximum resistance to compression at the transverse walls, the flutes of the corrugated cardboard must be oriented vertically in the walls side and in the flaps and therefore the double discharge lines must be oriented in a direction perpendicular to the cardboard grooves. These double delivery lines are made by marking on the cardboard blank from which the packaging comes, two very close parallel fold lines. In the packaging in the assembled state, the narrow strip defined between the two fold lines is in principle straight and contained in a horizontal plane.

Toutefois, l'expérience montre que, la plupart du temps, cette bande a un profil irrégulier, dû au fait que l'on maítrise mal l'écrasement des cannelures du carton ondulé sur les lignes de refoulement. On constate que cette bande est souvent gondolée ou qu'elle présente un certain degré de gauchissement. Il en résulte que lorsque plusieurs conditionnements sont gerbés, la force de compression risque de ne s'exercer que sur certains points discrets du bord supérieur des parois latérales. Au niveau de ces points, les parois latérales peuvent flamber ou présenter une certaine fatigue qui diminue sa résistance au gerbage.However, experience shows that, most of the time, this strip has an irregular profile, due to the fact that poorly controlled crushing of corrugated cardboard flutes on the discharge lines. We see that this band is often curled or has a certain degree of warping. It follows that when several packaging is stacked, the compression force may to exercise only on certain discrete points of the edge upper side walls. At these points, the side walls may buckle or show some fatigue which reduces its resistance to stacking.

Un autre inconvénient du rembordement des parois latérales vers l'intérieur réside dans le fait que le contact entre le bord inférieur des rabats et la paroi du fond est relativement élastique en raison de la présence dans la paroi du fond des cannelures du carton. Ainsi, lors du gerbage, les parois latérales peuvent subir une légère déformation due à l'écrasement des cannelures de la paroi du fond.Another disadvantage of the overhang of the walls sideways inwards lies in the fact that the contact between the lower edge of the flaps and the wall of the bottom is relatively elastic due to the presence in the back wall of the cardboard grooves. So when stacking, the side walls may undergo a slight deformation due to crushing of the grooves in the wall of the background.

RESUME DE L'INVENTIONSUMMARY OF THE INVENTION

La présente invention vise à remédier à ces inconvénients et propose en premier lieu un procédé de renforcement des parois porteuses d'un conditionnement réalisé à partir d'un flan en carton ondulé à au moins une couche cannelée, dans lequel chacune des parois porteuses est constituée par un volet articulé sur la paroi de fond du conditionnement par une ligne de pliage, ledit procédé étant caractérisé en ce qu'il consiste :

  • à pratiquer sur ledit volet, sensiblement à égale distance entre son bord libre et ladite ligne de pliage, une coupe rectiligne à mi-chair qui tranche toute l'épaisseur du carton sauf la feuille de couverture se trouvant sur la face extérieure du flan, ladite coupe définissant de part et d'autre, une paroi latérale articulée sur la paroi de fond par ladite ligne de pliage et un rabat articulé sur ladite paroi latérale par une ligne de liaison formée sur la feuille de couverture non tranchée ;
  • à dresser le volet perpendiculairement à la paroi de fond ;
  • à plier le rabat vers l'extérieur du conditionnement en le faisant pivoter autour de ladite ligne de liaison ;
  • et à coller le rabat sur la face extérieure de la paroi latérale.
    • The present invention aims to remedy these drawbacks and first of all proposes a method for reinforcing the load-bearing walls of a package produced from a corrugated cardboard blank with at least one corrugated layer, in which each of the load-bearing walls is made up by a flap articulated on the bottom wall of the packaging by a fold line, said method being characterized in that it consists:
  • to make on said flap, substantially at an equal distance between its free edge and said fold line, a straight cut with half-flesh which cuts the entire thickness of the cardboard except the cover sheet located on the outer face of the blank, said section defining on either side, a side wall articulated on the bottom wall by said fold line and a flap articulated on said side wall by a connecting line formed on the sheet of cover not cut;
  • erecting the flap perpendicular to the bottom wall;
  • folding the flap outwards of the packaging by pivoting it around said connecting line;
  • and gluing the flap to the outside of the side wall.

    • On obtient ainsi au sommet de la paroi latérale et du rabat contigu une surface d'appui parfaitement plate et horizontale, de largeur égale au double de l'épaisseur du carton. Cette surface offre un appui stable et régulier pour un autre conditionnement.This gives the top of the side wall and flap adjoining a perfectly flat support surface and horizontal, of width equal to twice the thickness of the cardboard. This surface provides stable and regular support for another conditioning.

    Le rabat a une hauteur exactement égale à celle de la paroi latérale, de sorte que son bord inférieur arrive au même niveau que la face inférieure de la paroi de fond. Il en résulte que lorsque plusieurs conditionnements sont gerbés, la paroi latérale et le volet de chacun d'eux s'appuient sur la paroi latérale et le volet du conditionnement sous-jacent.The flap has a height exactly equal to that of the side wall, so that its bottom edge reaches the same level as the underside of the bottom wall. he as a result that when several packages are stacked, the side wall and the flap of each are supported on the side wall and the flap of the underlying packaging.

    L'effort de compression est donc également réparti entre la paroi latérale et le rabat et s'exerce uniformément sur toute la longueur de ces derniers.The compression force is therefore equally distributed between the side wall and the flap and is exerted uniformly on the entire length of these.

    L'invention concerne également un conditionnement obtenu par le procédé décrit ci-dessus.The invention also relates to a packaging obtained by the method described above.

    DESCRIPTION D'UN MODE DE REALISATION PREFEREDESCRIPTION OF A PREFERRED EMBODIMENT

    Un mode de réalisation de l'invention sera décrit à présent en regard du dessin annexé dans lequel :

  • la figure 1 montre une vue partielle d'un flan en carton ondulé montrant notamment une paroi latérale et son rabat avec une coupe à mi-chair entre eux ;
  • la figure 2 est une vue à plus grande échelle en coupe suivant la ligne II-II de la figure 1 ;
  • la figure 3 est une vue en coupe partielle illustrant le mode de pliage du flan pour former la paroi latérale rembordée extérieurement par le rabat ;
  • la figure 4 représente un mode de réalisation particulier d'un flan servant à réaliser un conditionnement pourvu de parois latérales porteuses renforcées par le procédé illustré par les figures 1 à 3 ; et
  • la figure 5 montre le conditionnement réalisé avec le flan de la figure 4.
    • An embodiment of the invention will now be described with reference to the appended drawing in which:
  • Figure 1 shows a partial view of a corrugated cardboard blank showing in particular a side wall and its flap with a half-cut section between them;
  • Figure 2 is an enlarged sectional view along line II-II of Figure 1;
  • Figure 3 is a partial sectional view illustrating the method of folding the blank to form the side wall folded outwardly by the flap;
  • FIG. 4 represents a particular embodiment of a blank used for producing a packaging provided with load-bearing side walls reinforced by the method illustrated by FIGS. 1 to 3; and
  • FIG. 5 shows the packaging produced with the blank of FIG. 4.

    • DESCRIPTION DETAILLEE D'UN MODE DE REALISATIONDETAILED DESCRIPTION OF AN EMBODIMENT

    On expliquera tout d'abord le principe du procédé de renforcement selon l'invention en se reportant aux figures 1 à 3 qui représentent une portion de flan en carton ondulé comprenant deux couches cannelées 10, 12 séparées par une feuille de papier intermédiaire 14 et recouvertes extérieurement par deux feuilles de couverture intérieure 16 et extérieure 18, mais comme on le verra, l'invention s'applique également à un carton ondulé comprenant une, deux ou davantage de couches cannelées.We will first explain the principle of the reinforcement according to the invention with reference to Figures 1 to 3 which represent a portion of blank in corrugated cardboard comprising two fluted layers 10, 12 separated by a sheet of intermediate paper 14 and covered externally by two interior cover sheets 16 and exterior 18, but as will be seen, the invention also applies to corrugated cardboard comprising one, two or more fluted layers.

    La portion de flan 20 comprend une paroi de fond 22 sur laquelle un volet 24 est articulé par une ligne de pliage 26. La ligne de pliage est pratiquée sur la face du flan destinée à se trouver à l'intérieur de l'emballage, et qui est la face visible sur la figure 1. Le volet a une largeur L qui est double de la hauteur h de la caisse que l'on veut réaliser. A peu près à mi-distance entre la ligne de pliage 26 et le bord 27 du volet 24, est pratiquée une coupe à mi-chair 28 qui tranche le carton sur toute son épaisseur à l'exception de la feuille de couverture extérieure 18. La coupe 28 définit sur le volet une paroi latérale 30 articulée à la paroi de fond 22 par la ligne de pliage 26 et un rabat 32 qui n'est rattaché à la paroi latérale que par la ligne 34 non tranchée de la feuille de couverture extérieure 18.The blank portion 20 comprises a bottom wall 22 on which a flap 24 is articulated by a fold line 26. The fold line is formed on the face of the blank intended to be inside the packaging, and which is the visible side in FIG. 1. The shutter has a width L which is twice the height h of the box that we want to make. About halfway between the fold line 26 and the edge 27 of the flap 24, a half-cut 28 is made which cuts the cardboard over its entire thickness with the exception of the outer cover sheet 18. The section 28 defines on the shutter a side wall 30 articulated to the bottom wall 22 by the fold line 26 and a flap 32 which is attached to the side wall only by the line 34 not cut from the outer cover sheet 18.

    La ligne de pliage 26 et la coupe 28 sont perpendiculaires à la direction des cannelures 35.The fold line 26 and the cut 28 are perpendicular to the direction of the grooves 35.

    La figure 3 montre le mode de pliage du flan : on dresse le volet 24 pour l'amener en position perpendiculaire à la paroi de fond 22, par pliage autour de la ligne de pliage 26, puis on plie le rabat 32 vers l'extérieur autour de la ligne de liaison 34. Le rabat est ensuite collé sur la face extérieure de la paroi latérale.Figure 3 shows how the blank is folded: the flap 24 to bring it into position perpendicular to the bottom wall 22, by folding around the fold line 26, then fold the flap 32 outward around the connecting line 34. The flap is then glued to the face exterior of the side wall.

    Du fait que la coupe 28 est rectiligne, on obtient à la partie supérieure de la paroi latérale et du rabat une surface de coupe 36 très régulière, plate et horizontale sur toute sa longueur. De plus, le bord inférieur 27 du rabat se trouve exactement au même niveau que celui de la face inférieure 40 de la paroi de fond. Il résulte de ces deux caractéristiques que si plusieurs conditionnements sont gerbés, l'effort de compression est réparti à égalité sur la paroi latérale et le rabat de chaque conditionnement et uniformément sur toute la longueur de ces éléments. Le conditionnement a donc une résistance à la compression bien supérieure à celle des conditionnements rembordés intérieurement.Because the section 28 is straight, we obtain at the upper part of the side wall and the flap a very regular, flat and horizontal cutting surface 36 on its entire length. In addition, the lower edge 27 of the flap is is at exactly the same level as that of the face lower 40 of the bottom wall. It results from these two characteristics only if several packages are stacked, the compressive force is distributed equally over the side wall and the flap of each package and evenly along the length of these elements. The packaging therefore has good compressive strength higher than that of wrapped packaging internally.

    On décrira à présent en détail en regard des figures 4 et 5, un exemple de conditionnement, ici un plateau pour fromage de Brie.We will now describe in detail with reference to Figures 4 and 5, an example of packaging, here a tray for Brie cheese.

    La figure 4 montre le flan 50 à partir duquel est réalisé le plateau. Ce flan est sensiblement rectangulaire et comprend une paroi de fond centrale 52 de forme carrée ou rectangulaire, deux parois longitudinales 54, 56 articulées par des lignes de pliage 58, 60 le long de deux côtés parallèles de la paroi de fond et deux volets 62, 64 articulés par des lignes de pliage 66, 68 le long des deux autres côtés de la paroi de fond. Les volets 62, 64 ont une largeur supérieure ou égale au double de celle des parois longitudinales 54, 56.Figure 4 shows the blank 50 from which is made the set. This blank is substantially rectangular and comprises a central bottom wall 52 of square shape or rectangular, two longitudinal walls 54, 56 articulated by fold lines 58, 60 along two sides parallels of the bottom wall and two flaps 62, 64 articulated by fold lines 66, 68 along the two other sides of the bottom wall. The flaps 62, 64 have a width greater than or equal to twice that of the walls longitudinal 54, 56.

    Quatre fentes rectilignes 70, 72 et 74, 76 sont pratiquées depuis les deux bords longitudinaux du flan, dans l'alignement des lignes de pliage 66, 68 et sur une distance d sensiblement égale au double de la largeur l des parois longitudinales.Four rectilinear slots 70, 72 and 74, 76 are formed from the two longitudinal edges of the blank, in alignment with the fold lines 66, 68 and over a distance d substantially equal to twice the width l of the longitudinal walls.

    Les volets 62, 64 sont partagés par des coupes à mi-chair 78, 80, en bandes 82, 84 et 86, 88 d'égale largeur l.The flaps 62, 64 are shared by half-cut sections 78, 80, in strips 82, 84 and 86, 88 of equal width l .

    Le flan ayant une symétrie centrale, on ne décrira que la partie de gauche.The blank having a central symmetry, we will only describe the left side.

    Les bandes 82, 84 sont séparées à leurs extrémités par des incisions 90, 92, de même longueur que les fentes 70, 72. On définit ainsi aux extrémités des bandes, des pattes indépendantes 94, 96 et 98, 100. Les pattes intérieures 94, 98, c'est-à-dire celles qui sont associées à la bande intérieure 82, peuvent être pliées le long de lignes de pliage 102, 104 passant par les extrémités des fentes 70, 72.The strips 82, 84 are separated at their ends by incisions 90, 92, the same length as the slots 70, 72. One thus defines at the ends of the bands, legs independent 94, 96 and 98, 100. The inner legs 94, 98, i.e. those associated with the band interior 82, can be folded along lines of folding 102, 104 passing through the ends of the slots 70, 72.

    Sur les pattes extérieures 96, 100 sont marquées des lignes de pliage 106, 108 alignées avec les lignes de pliage longitudinales 58, 60. Ces lignes de pliage définissent aux extrémités des pattes, des languettes de fixation externes 110, 112.On the outer legs 96, 100 are marked with fold lines 106, 108 aligned with fold lines longitudinal 58, 60. These fold lines define at ends of legs, external fixing tabs 110, 112.

    Sur les pattes intérieures 94, 98 sont marquées des lignes de pliage 114, 116 parallèles aux lignes de pliage 102, 104 et qui définissent, de part et d'autre, des éléments de coin 118, 120 et des languettes de fixation internes 122, 124.On the inner legs 94, 98 are marked with fold lines 114, 116 parallel to fold lines 102, 104 and which define, on both sides, corner elements 118, 120 and fixing tabs internal 122, 124.

    Des incisions en forme de U sont pratiquées sur la bande extérieure 84, à partir de la coupe à mi-chair 78, de manière à dégager des tenons de centrage 126, 128. Des évidements 130, 132 de forme complémentaire de celle des tenons sont percés dans la bande intérieure 82, le long de la ligne de pliage transversale 66. Ces évidements sont destinés à recevoir les tenons d'un conditionnement inférieur.U-shaped incisions are made on the band outer 84, from the half-cut section 78, from so as to release centering pins 126, 128. recesses 130, 132 of shape complementary to that of pins are drilled in the inner band 82, along the transverse fold line 66. These recesses are intended to receive the pins of a packaging inferior.

    La mise en forme du plateau d'emballage se fait comme suit : on commence par dresser les volets 62, 64 perpendiculairement à la paroi de fond 52 par pliage autour des lignes de pliage 66, 68, puis on rabat les bandes extérieures 84, 88 vers l'extérieur, par pliage autour des coupes à mi-chair 78, 80 pour les appliquer contre la face extérieure des bandes intérieures 82, 86. Les bandes extérieures sont collées sur les bandes intérieures.The packaging tray is shaped as follows: we start by erecting the flaps 62, 64 perpendicular to the bottom wall 52 by folding around fold lines 66, 68, then fold the strips 84, 88 outwards, by folding around the half-cuts 78, 80 to apply against the face exterior of interior strips 82, 86. The strips outside are glued on the inside strips.

    On plie ensuite vers l'intérieur les pattes intérieures 94, 98 autour des lignes de pliage 102, 114 ; 104, 116, puis on dresse les parois longitudinales 54, 56 perpendiculairement à la paroi de fond 52 par pliage autour des lignes de pliage 58, 60.Then fold inward the inner tabs 94, 98 around the fold lines 102, 114; 104, 116, then the longitudinal walls 54, 56 are erected perpendicular to the bottom wall 52 by folding around fold lines 58, 60.

    On colle ensuite les languettes intérieures 122, 124 sur la face intérieure des parois longitudinales 54, 56 en veillant à ce que les éléments de coin 118, 120 se placent en diagonale dans les coins de la paroi de fond 52. Enfin, on plie les languettes extérieures 110, 112 et on les colle sur la face extérieure des parois longitudinales 54, 56.Then glue the inner tabs 122, 124 on the inner face of the longitudinal walls 54, 56 in ensuring that the corner elements 118, 120 are placed diagonally in the corners of the bottom wall 52. Finally, we fold the outer tabs 110, 112 and glue them on the outer face of the longitudinal walls 54, 56.

    On obtient alors le plateau représenté à la figure 5. Ce plateau est particulièrement résistant parce qu'il possède deux parois transversales porteuses formées chacune de deux épaisseurs de carton et également parce que les extrémités des parois longitudinales sont prises en sandwich entre les languettes intérieures et les languettes extérieures.This gives the plate shown in Figure 5. This tray is particularly resistant because it has two transverse load-bearing walls each formed of two cardboard thicknesses and also because the ends longitudinal walls are sandwiched between the interior tabs and exterior tabs.

    Claims (6)

    Procédé de renforcement des parois porteuses d'un conditionnement réalisé à partir d'un flan (20) en carton ondulé à au moins une couche cannelée (10, 12), dans laquelle chacune des parois porteuses est constituée par un volet (24) articulé sur la paroi de fond (22) du conditionnement par une ligne de pliage (26), ledit procédé étant caractérisé en ce qu'il consiste : à pratiquer sur la face intérieure du volet (24), sensiblement à égale distance entre son bord libre (27) et ladite ligne de pliage, une coupe rectiligne à mi-chair (28) qui tranche toute l'épaisseur du carton sauf la feuille de couverture (18) se trouvant sur la face extérieure du flan, ladite coupe définissant de part et d'autre, une paroi latérale (30) articulée sur la paroi de fond (22) par ladite ligne de pliage (26) et un rabat (32) articulé sur la paroi latérale par une ligne de liaison (34) formée sur ladite feuille de couverture extérieure (18) ; à dresser le volet (24) perpendiculairement à la paroi de fond (22) ; à plier le rabat (32) vers l'extérieur du conditionnement en le faisant pivoter autour de ladite ligne de liaison (34) ; et à coller le rabat sur la face extérieure de la paroi latérale. Method for reinforcing the load-bearing walls of a package produced from a corrugated cardboard blank (20) with at least one fluted layer (10, 12), in which each of the load-bearing walls is constituted by an articulated flap (24) on the bottom wall (22) of the packaging by a folding line (26), said method being characterized in that it consists: to perform on the inside face of the flap (24), substantially at an equal distance between its free edge (27) and said fold line, a rectilinear half-flesh cut (28) which cuts the entire thickness of the carton except the sheet cover (18) located on the outer face of the blank, said section defining on either side, a side wall (30) articulated on the bottom wall (22) by said fold line (26) and a flap (32) articulated on the side wall by a connecting line (34) formed on said outer cover sheet (18); erecting the flap (24) perpendicular to the bottom wall (22); folding the flap (32) towards the outside of the packaging by pivoting it around said connecting line (34); and gluing the flap to the outside of the side wall. Conditionnement réalisé à partir d'un flan en carton ondulé (20) à au moins une couche cannelée (10, 12) et comprenant une paroi de fond (22) et au moins un volet (24) articulé sur la paroi de fond par une ligne de pliage (26), caractérisé en ce que ledit volet (24) comporte, sur la face intérieure, sensiblement à égale distance entre son bord libre (27) et la ligne de pliage (26), une coupe rectiligne à mi-chair (28) qui tranche toute l'épaisseur du carton sauf la feuille de couverture (18) se trouvant sur la face extérieure du flan.Packaging made from a cardboard blank corrugated (20) with at least one grooved layer (10, 12) and comprising a bottom wall (22) and at least one flap (24) articulated on the bottom wall by a fold line (26), characterized in that said flap (24) comprises, on the face interior, substantially equidistant from its edge free (27) and the fold line (26), a straight cut half-flesh (28) which cuts the entire thickness of the cardboard except the cover sheet (18) located on the face outside of the blank. Conditionnement selon la revendication 2, caractérisé en ce que le bord inférieur (17) du rabat arrive au même niveau que la face inférieure (40) de la paroi de fond.Packaging according to claim 2, characterized in that the lower edge (17) of the flap reaches the same level than the underside (40) of the bottom wall. Conditionnement selon la revendication 2, réalisé avec un carton ondulé qui comprend une ou plusieurs couches cannelées (10, 12) reliées entre elles par au moins une feuille de papier intermédiaire (14) et recouvertes sur leurs faces extérieures par des feuilles de couverture (16, 18), caractérisé en ce que la coupe à mi-chair est pratiquée à travers la feuille de couverture intérieure (16), la ou les couches cannelées (10, 12) et la ou les feuilles intermédiaires, mais pas sur la feuille de couverture extérieure (18).Packaging according to claim 2, produced with corrugated cardboard that includes one or more layers grooved (10, 12) interconnected by at least one sheet of intermediate paper (14) and covered on their outer faces by cover sheets (16, 18), characterized in that the half-cut is made through the inner cover sheet (16), the or the fluted layers (10, 12) and the sheet or sheets intermediaries, but not on the cover sheet exterior (18). Conditionnement selon l'une des revendications 2 à 4, caractérisé en ce qu'il comprend une paroi de fond (52) et deux parois latérales longitudinales (54, 56) et deux parois latérales transversales (82, 86), articulées sur la paroi de fond par des lignes de pliage (58, 60, 66, 68), chacune desdites parois latérales transversales (82, 86) étant doublée par un rabat (84) qui est articulé sur celle-ci par une coupe à mi-chair (78), ladite paroi transversale (82) et ledit rabat (84) étant munis à leurs extrémités de languettes (122, 124 et 110, 112) pliables le long de lignes de pliage (114, 116) perpendiculaires à la ligne de pliage (66) de ladite paroi transversale (82) sur la paroi de fond (52), les languettes (122, 124) qui sont attenantes à ladite paroi transversale (82) étant collées sur la face intérieure de deux parois latérales longitudinales (54, 56) adjacentes à ladite paroi transversale (82), tandis que les languettes (110, 112) qui sont attenantes au rabat (84) sont collées sur la face extérieure desdites parois longitudinales (54, 56).Packaging according to one of claims 2 to 4, characterized in that it comprises a bottom wall (52) and two longitudinal side walls (54, 56) and two walls lateral transverse (82, 86), articulated on the wall of bottom with fold lines (58, 60, 66, 68), each said transverse side walls (82, 86) being lined by a flap (84) which is articulated thereon by a half-cut (78), said transverse wall (82) and said flap (84) being provided at their ends with tongues (122, 124 and 110, 112) foldable along lines fold (114, 116) perpendicular to the fold line (66) of said transverse wall (82) on the bottom wall (52), the tongues (122, 124) which are adjacent to said transverse wall (82) being glued to the inner face two adjacent longitudinal side walls (54, 56) to said transverse wall (82), while the tabs (110, 112) which are adjacent to the flap (84) are glued on the outer face of said longitudinal walls (54, 56). Conditionnement selon la revendication 5, caractérisé en ce que ladite paroi transversale (82) se prolonge par des éléments de coin intérieurs (118, 120) qui se placent en diagonale dans les coins du conditionnement définis entre ladite paroi latérale et lesdites parois longitudinales (54, 56), lesdits éléments de coin se prolongeant à leur tour par des languettes (122, 124) qui sont collées sur la face intérieure desdites parois longitudinales (54, 56).Packaging according to claim 5, characterized in that said transverse wall (82) is extended by interior corner elements (118, 120) which are placed in diagonal in the corners of the packaging defined between said side wall and said longitudinal walls (54, 56), said corner elements in turn extending by tabs (122, 124) which are glued to the face interior of said longitudinal walls (54, 56).
    EP99401918A 1998-08-06 1999-07-27 Method of reinforcing the load carrying sidewalls of trays of corrugated cardboard and tray so obtained Expired - Lifetime EP0978371B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    FR9810122 1998-08-06
    FR9810122A FR2782031B1 (en) 1998-08-06 1998-08-06 PROCESS FOR REINFORCING THE CARRIER WALLS OF A CORRUGATED CARTON PACKAGING AND PACKAGING OBTAINED BY THIS PROCESS

    Publications (2)

    Publication Number Publication Date
    EP0978371A1 true EP0978371A1 (en) 2000-02-09
    EP0978371B1 EP0978371B1 (en) 2002-11-20

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    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP99401918A Expired - Lifetime EP0978371B1 (en) 1998-08-06 1999-07-27 Method of reinforcing the load carrying sidewalls of trays of corrugated cardboard and tray so obtained

    Country Status (4)

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    EP (1) EP0978371B1 (en)
    DE (1) DE69904001T2 (en)
    ES (1) ES2188113T3 (en)
    FR (1) FR2782031B1 (en)

    Cited By (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP1207111A1 (en) * 2000-11-20 2002-05-22 Assidomän Iberoamericana S.A. Improved cardboard box for perishable products
    NL1018010C2 (en) * 2001-05-07 2002-11-08 Jong Verpakking B V De Combination of stackable cardboard crates for e.g. fruit and vegetables, has specific orientation of corrugated peaks in base and long side walls
    ES2199646A1 (en) * 2001-08-21 2004-02-16 Kappa Iberoamericana Sa Corrugated cardboard box is formed from single piece body which defines base, side parts and pieces with horizontal and vertical surfaces
    AU780218B2 (en) * 2000-10-25 2005-03-10 Assidoman Iberoamericana, S.A. Improved cardboard box for perishable products

    Citations (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB492974A (en) * 1937-04-30 1938-09-30 Thompson & Norris Mfg Company Improvements in or relating to packing cases or containers
    EP0444004A1 (en) * 1990-02-20 1991-08-28 Sca Packaging Belgium N.V. Blank for constructing a box and box constructed therefrom

    Patent Citations (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB492974A (en) * 1937-04-30 1938-09-30 Thompson & Norris Mfg Company Improvements in or relating to packing cases or containers
    EP0444004A1 (en) * 1990-02-20 1991-08-28 Sca Packaging Belgium N.V. Blank for constructing a box and box constructed therefrom

    Cited By (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    AU780218B2 (en) * 2000-10-25 2005-03-10 Assidoman Iberoamericana, S.A. Improved cardboard box for perishable products
    EP1207111A1 (en) * 2000-11-20 2002-05-22 Assidomän Iberoamericana S.A. Improved cardboard box for perishable products
    NL1018010C2 (en) * 2001-05-07 2002-11-08 Jong Verpakking B V De Combination of stackable cardboard crates for e.g. fruit and vegetables, has specific orientation of corrugated peaks in base and long side walls
    ES2199646A1 (en) * 2001-08-21 2004-02-16 Kappa Iberoamericana Sa Corrugated cardboard box is formed from single piece body which defines base, side parts and pieces with horizontal and vertical surfaces

    Also Published As

    Publication number Publication date
    FR2782031B1 (en) 2000-11-03
    DE69904001D1 (en) 2003-01-02
    ES2188113T3 (en) 2003-06-16
    FR2782031A1 (en) 2000-02-11
    EP0978371B1 (en) 2002-11-20
    DE69904001T2 (en) 2003-05-08

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