EP0006043B1 - Egg carton - Google Patents

Egg carton Download PDF

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Publication number
EP0006043B1
EP0006043B1 EP19790400299 EP79400299A EP0006043B1 EP 0006043 B1 EP0006043 B1 EP 0006043B1 EP 19790400299 EP19790400299 EP 19790400299 EP 79400299 A EP79400299 A EP 79400299A EP 0006043 B1 EP0006043 B1 EP 0006043B1
Authority
EP
European Patent Office
Prior art keywords
lateral
cover
spigots
box
sheet
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.)
Expired
Application number
EP19790400299
Other languages
German (de)
French (fr)
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EP0006043A1 (en
Inventor
Jean-Pierre Stevens
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.)
Ono SA
Original Assignee
Ono SA
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
Priority claimed from FR7806181A external-priority patent/FR2418753A1/en
Priority claimed from FR7816243A external-priority patent/FR2427272A2/en
Priority claimed from FR7832001A external-priority patent/FR2440891A2/en
Application filed by Ono SA filed Critical Ono SA
Priority to AT79400299T priority Critical patent/ATE216T1/en
Publication of EP0006043A1 publication Critical patent/EP0006043A1/en
Application granted granted Critical
Publication of EP0006043B1 publication Critical patent/EP0006043B1/en
Expired legal-status Critical Current

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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
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/30—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure
    • B65D85/32—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure for eggs
    • B65D85/324—Containers with compartments made of pressed material

Definitions

  • the present invention relates to egg boxes of the type comprising on the one hand a plastic body, in particular transparent, consisting of a flat sheet of generally rectangular shape on which project downwards at least two longitudinal rows of open convergent cells upwards, and upwards, central pins open downwards and situated between these two rows as well as lateral pins open downwards and situated along each longitudinal edge of the sheet, in line with the central pins, and on the other hand, a flat cardboard cover, the central part of which is supported by the central pins and is bordered by two lateral wings inclined downward, the free ends of which are fixed to lateral parts of said sheet, at least one of the wings being fixed by adhesion.
  • the lateral pins open downwardly form an external gutter provided with hooking spouts allowing the latching of a lateral wing of the cover, while the other wing adheres to the outer wall of a second gutter open upwards provided on the other longitudinal edge of the sheet forming the body and externally bordering the lateral pins located on the corresponding side.
  • the object of the invention is to provide an egg box of the same type which is more rigid and which consequently makes it possible to save on cardboard, and it also aims to provide a plastic body making it possible to obtain such an egg carton.
  • the subject of the invention is a plastic body, in particular transparent for egg boxes, of the type consisting of a flat sheet of generally rectangular shape on which protrude downwards at least two longitudinal rows of converging cells. open upwards and, upwards, central pins open downwards and located between these two rows as well as lateral pins open downwards and located along each longitudinal edge of the sheet, in line with the central pins, this body being characterized in that each lateral pin has the shape of a pyramid whose external lateral side is constituted by a flat inclined face, and in that all the external lateral faces situated on the same side are coplanar.
  • the invention also relates to an egg box of the type indicated above and characterized in that its body is as defined above and in that the free end of each lateral wing of the cover adheres to all of the external lateral faces of the lateral pins located on the same side.
  • the cells 4 are distributed symmetrically with respect to a longitudinal plane of symmetry P of the box, in two rows of three.
  • This plane P is also a plane of symmetry for several elements projecting upwards, namely two end pins or posts 9, two central posts or posts 10, and eight lateral posts or posts 12.
  • the pins 9 and 10 have the shape of trunks of straight pyramids converging upwards and a height roughly equal to that of the cells 4.
  • the horizontal section of the pins 9 is roughly triangular, that of the pins 10 is square.
  • the large base of the pins 9 is constituted by an end edge of the sheet 3 and by one side of the two extreme cells 4, that of the pins 10 by one side of each group of four adjacent cells.
  • the small bases 13 and 14 of the pins 9 and 10 are flat and contained in the same horizontal plane Q.
  • the pins 12 are located to the right of the pins 9 and 10 and have the shape of pyramids with a triangular base.
  • the base of the end pins 12 is formed by two sides of the sheet 3 and by one side of an end cell 4 and is therefore a right triangle.
  • the base of the intermediate pins 12 is an isosceles triangle constituted by a longitudinal edge of the sheet 3 and by one side of an end cell 4 and a middle cell 4.
  • the tips of the pins 12 are all located at a level below the plane Q, and their outer faces 15, starting from the longitudinal edges of the sheet 3, define two inclined planes p1 (Fig. 2) whose meeting line is horizontal and located in plane P.
  • the outer faces 16 of the pins 9 and 12 starting from the transverse edges of the sheet 3 define two inclined planes whose meeting line is horizontal and perpendicular to the plane P.
  • the body 1 is thermoformed in a single operation from a flat sheet of plastic, it is clear that the large base of the pins 9 and 10 as well as the base of the pins 12 is not materialized, unlike small bases 13 and 14 of the pins 9 and 10. In other words, it is possible to access from the bottom up to the top of all the pins 9, 10 and 12.
  • the two central pins 10 each have a small stud at their top cylindrical 10a projecting upwards.
  • the cover 2 is produced from a rectangle 18 cut between two successive transverse lines 40 weakened or partially cut from a strip of cardboard. flat 19 (Fig. 3).
  • the term "weakened line” means a pre-tear line which can be easily torn by hand and which consists, for example, of a series of small holes.
  • This rectangle comprises two longitudinal fold lines 41 located approximately halfway between the longitudinal edges 42 and the longitudinal axis XX, and two longitudinal fold lines 41 adjacent to the edges 42.
  • the lines 41 end at a short distance. lines 40 and are extended by slightly divergent cut segments 43.
  • the ends of the lines 41 are joined by two transverse fold lines 44 and are connected to the respective corners of the rectangle 18 by other fold lines 45.
  • the two segments 43 delimit with the lines 40 and 44 a central end flap 46 of trapezoidal shape, while lines 40, 45 and 43 define two lateral end flaps 47.
  • the lateral wings 35 of cover 2 are delimited by lines 41, 42 and 45 and have a trapezoidal shape.
  • a wing 35 has a longitudinal tear strip 48 which extends between the two corresponding lines 45, approximately halfway between the associated lines 41 and 41 8 .
  • the strip 48 consists of two symmetrical series and in the parallel set of bent slots 49 having successively in the direction of tearing a slightly divergent part 50 and a part 51 parallel to the axis XX.
  • a gripping member 52 defined by a cutout 53 in the form of a sea anchor which reveals two tongues 54.
  • the slots 49 go in both directions starting from the member 52 , as indicated by arrows carried by this body.
  • the other wing 35 of the cover 2 has over its entire length, approximately at the same distance from the edge 42 as the strip 48, a fold line 55 parallel to the axis X-X. From each line 45, the line 55 extends to the adjacent line 40 by a cut segment 56 also parallel to the axis X-X.
  • a hole 57 is provided on the axis XX, approximately at each third of the length of the central part of the cover between the lines 41 and 44; this hole has the shape of an equilateral triangle, the inscribed circle of which has a diameter slightly smaller than the projections 10 8 of the central pins 10 of the body 1.
  • the rectangle 18 is placed on it so that the projections 10a pass, slightly by force, the holes 57.
  • the two wings 35 are then folded down and glued to the lateral pins 12 in their regions located at - below strip 48 and line 55 respectively.
  • supports of appropriate shape are introduced into the pins 9, 10 and 12. This brings the gripping member 52 in the vicinity of an extreme lateral pin 12 but next to it.
  • the flap 46 is folded against the outer face of the adjacent pin 9, and the flaps 47 are folded so that their upper ends cover the lateral ends of the flap 46. These ends are glued to each other. .
  • the areas of the rectangle 18 intended to be bonded can be coated beforehand with a heat-sealing lacquer or another type of adhesive, for example an adhesive which is cold-adhered by simple pressure.
  • a heat-sealing lacquer or another type of adhesive for example an adhesive which is cold-adhered by simple pressure.
  • a tongue 54 is slightly pushed back with a fingernail to grip the other tongue 54, and one pulls on the corresponding side to tear off part of the strip 48, then one starts again on the other side by gripping the another tongue 54.
  • the remaining upper part of the wing 35 thus cut can then be grasped from below, and, by pulling upwards, the cover opens around the fold line 55 located on the other side, the nipples 10 8 emerging from the holes 57.
  • the slots 49 could be extended, in the rectangle 18, up to the lines 40.
  • the tear strip 48 can be produced in different ways. It can be a wire incorporated into the cardboard, or a narrow strip of resistant material capable of cutting the cardboard when its end is pulled, for example such as the strip available commercially under the registered trademark "TIRECEL".
  • the egg box thus produced is very rigid, and its cover 2 is not liable to separate from the body 1 during its handling.
  • the cover can be made with a thin and economical cardboard.
  • the printed stock consisting of cardboard in strips, is compact, as is the body stock 1.
  • the absence of cardboard on the small end faces of the box ensures good ventilation of the eggs, again favored by the shape of the alveoli, which only support the eggs in points.
  • the rectangle 18 b again includes the lines 41, 41 8 , 43 and 45 defined above, except that the lines 43 converge towards the axis of symmetry XX.
  • the holes 57 are removed, as well as the pins 1 O * of the body 1.
  • two weakened lines 58 perpen dicular to the axis XX; these extend beyond the lines 41 to approximately one third of the distance separating these lines 41 from the edges 42.
  • From each end of each line 58 symmetrically two weakened lines 59 slightly inclined towards the outside with respect to the XX axis.
  • the set of lines 59 thus draws, on each side of the axis XX, a weakened broken line 60 extending from one line 40 to another and comprising three elbows, one at its meeting with each line 58 and one midway between the two lines 58.
  • the fitting of the rectangle 1 8 '3 on a body 1 is identical to that described above with regard to Figs. 1 to 3, the gluing of the wings 35 b being carried out on the lateral pins 12 below the lines 60.
  • One accesses two end eggs by tearing the parts of the two lines 60 between the corresponding end of the cover and the first line 58 encountered, as well as this line 58. then has similar access to the next two eggs, etc.
  • the axis XX could moreover be materialized by a weakened line to allow only one egg to be discovered at a time.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packaging Frangible Articles (AREA)

Description

La présente invention est relative aux boîtes à oeufs du type comprenant d'une part un corps en matière plastique notamment transparente constitué d'une feuille plane de forme générale rectangulaire sur laquelle font saillie vers le bas au moins deux rangées longitudinales d'alvéoles convergents ouverts vers le haut et, vers le haut, des picots centraux ouverts vers le bas et situés entre ces deux rangées ainsi que des picots latéraux ouverts vers le bas et situés le long de chaque bord longitudinal de le feuille, au droit des picots centraux, et d'autre part un couvercle en carton plat dont la partie centrale est soutenue par les picots centraux et est bordée de deux ailes latérales inclinées vers le bas dont les extrémités libres sont fixées sur des parties latérales de ladite feuille, au moins une des ailes étant fixée par adhérence.The present invention relates to egg boxes of the type comprising on the one hand a plastic body, in particular transparent, consisting of a flat sheet of generally rectangular shape on which project downwards at least two longitudinal rows of open convergent cells upwards, and upwards, central pins open downwards and situated between these two rows as well as lateral pins open downwards and situated along each longitudinal edge of the sheet, in line with the central pins, and on the other hand, a flat cardboard cover, the central part of which is supported by the central pins and is bordered by two lateral wings inclined downward, the free ends of which are fixed to lateral parts of said sheet, at least one of the wings being fixed by adhesion.

Dans une boîte connue de ce type décrite dans le brevet FR-A-2 098 626, les picots latéraux ouverts vers le bas forment extérieurement une gouttière munie de becs d'accrochage permettant l'encliquetage d'une aile larérale du couvercle, tandis que l'autre aile adhère à la paroi extérieure d'une seconde gouttière ouverte vers le haut prévue sur l'autre bord longitudinal de la feuille formant le corps et bordant extérieurement les picots latéraux situés du côté correspondant.In a known box of this type described in patent FR-A-2 098 626, the lateral pins open downwardly form an external gutter provided with hooking spouts allowing the latching of a lateral wing of the cover, while the other wing adheres to the outer wall of a second gutter open upwards provided on the other longitudinal edge of the sheet forming the body and externally bordering the lateral pins located on the corresponding side.

L'invention a pour but de fournir une boîte à oeufs du même type qui soit plus rigide et qui, par suite, permette de réaliser des économies de carton, et elle a également pour but de fournir un corps en matière plastique permettant d'obtenir une telle boîte à oeufs.The object of the invention is to provide an egg box of the same type which is more rigid and which consequently makes it possible to save on cardboard, and it also aims to provide a plastic body making it possible to obtain such an egg carton.

A cet effet, l'invention a pour objet un corps en matière plastique notamment transparente pour boîte à oeufs, du type constitué d'une feuille plane de forme générale rectangulaire sur laquelle font saillie vers le bas au moins deux rangées longitudinales d'alvéoles convergents ouverts vers le haut et, vers le haut, des picots centraux ouverts vers le bas et situés entre ces deux rangées ainsi que des picots latéraux ouverts vers le bas et situés le long de chaque bord longitudinal de la feuille, au droit des picots centraux, ce corps étant caractérisé en ce que chaque picot latéral a la forme d'une pyramide dont le côté latéral extérieur est constitué par une face plane inclinée, et en ce que toutes les faces latérales extérieures situées d'un même côté sont coplanaires.To this end, the subject of the invention is a plastic body, in particular transparent for egg boxes, of the type consisting of a flat sheet of generally rectangular shape on which protrude downwards at least two longitudinal rows of converging cells. open upwards and, upwards, central pins open downwards and located between these two rows as well as lateral pins open downwards and located along each longitudinal edge of the sheet, in line with the central pins, this body being characterized in that each lateral pin has the shape of a pyramid whose external lateral side is constituted by a flat inclined face, and in that all the external lateral faces situated on the same side are coplanar.

L'invention a également pour objet une boîte à oeufs du type indiqué plus haut et caractérisée en ce que son corps est tel que défini ci-dessus et en ce que l'extrémité libre de chaque aile latérale du couvercle adhère à l'ensemble des faces latérales extérieures des picots latéraux situés du même côté.The invention also relates to an egg box of the type indicated above and characterized in that its body is as defined above and in that the free end of each lateral wing of the cover adheres to all of the external lateral faces of the lateral pins located on the same side.

On connaît certes, d'après le brevet US-A-3 372 856, des boîtes à oeufs dans lesquelles un couvercle en carton plat comporte deux ailes latèrales collèes sur le corps de la boîte. Cependant, cette boîte n'offre auçun accès pour des outils de support vers la face intérieure des surfaces planes sur lesquelles sont collées les ailes latérales, car celles-ci sont collées directement sur les alvéoles. Comme il ne saurait être question de risquer d'endommager les oeufs contenus dans la boîte, ceci limite considérablement la pression que l'on peut appliquer sur ces rabats pour effectuer le collage. Ainsi, le corps et la boîte suivant l'invention permettent un collage plus commode à réaliser et meilleur à matériaux collage plus commode à réaliser et meilleur à matériaux identiques, grâce au fait que les surfaces de collage sont les faces latérales extérieures de picots pyramidaux latéraux ouverts vers le bas.It is certainly known, from US-A-3,372,856, egg boxes in which a flat cardboard cover has two side wings attached to the body of the box. However, this box does not provide access for support tools towards the inner face of the flat surfaces on which the lateral wings are bonded, since these are glued directly to the cells. As there is no question of risking damaging the eggs contained in the box, this considerably limits the pressure that can be applied to these flaps to make the bonding. Thus, the body and the box according to the invention allow a bonding which is more convenient to produce and better with materials, bonding which is more convenient to produce and which is better with identical materials, thanks to the fact that the bonding surfaces are the external lateral faces of lateral pyramidal studs. open down.

L'invention est exposée ci-après plus en détail à l'aide des dessins annexés, qui représentent seulement deux modes d'exécution. Sur ces dessins:

  • -la Fig. 1 est une vue en plan, avec arrachement partiel, d'une boîte à oeufs suivant un mode de réalisation de l'invention;
  • -la Fig. 2 est une vue partielle en bout de cette boîte, à plus grande échelle, prise en regardant suivant la flèche 2 de la Fig. 1;
  • -la Fig. 3 est une vue en plan grandeur nature d'une bande de carton destinée à la réalisation du couvercle de la boîte des Fig. 1 et 2;
  • -la Fig. 4 est une vue analogue à la Fig. 3, mais à plus petite èchelle, d'une bande de carton destinée à la réalisation du couvercle d'un autre mode de réalisation de boîte à oeufs conforme à l'invention.
  • La boîte à oeufs représentée aux Fig. 1 et 2 est constituée de deux parties: un corps 1 thermoformé en matière plastique transparente ou translucide, et un couvercle 2 en carton.
  • Le corps 1, constitué par exemple de PVC ou de polystyrène-choc, comprend une feuille plane 3 rectangulaire qui réunit par leurs grandes bases six alvéoles 4 ayant chacun la forme générale d'un tronc de pyramide droit à bases octogonales régulières. Chaque alvéole est relié à la feuille 3 par une paroi verticale 5 de faible hauteur qui le prolong vers le haut et sur chaque face de laquelle fait saillie vers l'intérieur une petite calotte sphérique 6 de positionnement d'un oeuf. Le fond 7 de chaque alvéole est bombé vers l'intérieur en calotte sphérique, avec une zone marginale plane 8.
The invention is set out below in more detail with the aid of the appended drawings, which show only two embodiments. In these drawings:
  • -Fig. 1 is a plan view, partially broken away, of an egg carton according to an embodiment of the invention;
  • -Fig. 2 is a partial view at the end of this box, on a larger scale, taken by looking along arrow 2 in FIG. 1;
  • -Fig. 3 is a life-size plan view of a strip of cardboard intended for producing the cover of the box of FIGS. 1 and 2;
  • -Fig. 4 is a view similar to FIG. 3, but on a smaller scale, of a strip of cardboard intended for the production of the cover of another embodiment of an egg box according to the invention.
  • The egg carton shown in Figs. 1 and 2 consists of two parts: a thermoformed body 1 made of transparent or translucent plastic material, and a cover 2 made of cardboard.
  • The body 1, made for example of PVC or impact polystyrene, comprises a flat rectangular sheet 3 which joins by their large bases six cells 4 each having the general shape of a straight pyramid trunk with regular octagonal bases. Each cell is connected to the sheet 3 by a vertical wall 5 of low height which extends it upwards and on each side of which protrudes inwards a small spherical cap 6 for positioning an egg. The bottom 7 of each cell is curved inwards in a spherical cap, with a flat marginal zone 8.

Les alvéoles 4 sont répartis symétriquement par rapport à un plan de symétrie longitudinal P de la boîte, en deux rangées de trois. Ce plan P est également un plan de symétrie pour plusieurs éléments en saillie vers le haut, à savoir deux picots ou colonnettes d'extrémité 9, deux picots ou colonnettes centraux 10, et huit picots ou colonnettes latéraux 12.The cells 4 are distributed symmetrically with respect to a longitudinal plane of symmetry P of the box, in two rows of three. This plane P is also a plane of symmetry for several elements projecting upwards, namely two end pins or posts 9, two central posts or posts 10, and eight lateral posts or posts 12.

Les picots 9 et 10 ont la forme de troncs de pyramide droits convergents vers le haut et une hauteur à peu près égale à celle des alvéoles 4. La section horizontale des picots 9 est à peu près triangulaire, celle des picots 10 est carrée. Vue en plan, la grande base des picots 9 est constituée par un bord d'extemité de la feuille 3 et par un côté des deux alvéoles 4 extrêmes, celle des picots 10 par un côté de chaque groupe de quatre alvéoles adjacents. Les petites bases 13 et 14 des picots 9 et 10 sont planes et contenues dans un même plan horizontal Q.The pins 9 and 10 have the shape of trunks of straight pyramids converging upwards and a height roughly equal to that of the cells 4. The horizontal section of the pins 9 is roughly triangular, that of the pins 10 is square. In plan view, the large base of the pins 9 is constituted by an end edge of the sheet 3 and by one side of the two extreme cells 4, that of the pins 10 by one side of each group of four adjacent cells. The small bases 13 and 14 of the pins 9 and 10 are flat and contained in the same horizontal plane Q.

Les picots 12 sont situés au droit des picots 9 et 10 et ont la forme de pyramides à base triangulaire. La base des picots 12 d'extrémité est constituée par deux côtés de la feuille 3 et par un côté d'un alvéole 4 d'extrémité et est donc un triangle rectangle. La base des picots 12 intermédiaires est untriangle isocèle constitué par un bord longitudinal de la feuille 3 et par un côté d'un alvéole 4 d'extrémité et d'un alvéole 4 médian. Les pointes des picots 12 sont toutes situées à un niveau inférieur au plan Q, et leurs faces extérieures 15, partant des bords longitudinaux de la feuille 3, définissent deux plans inclinés p1 (Fig. 2) dont la ligne de rencontre est horizontale et située dans le plan P.The pins 12 are located to the right of the pins 9 and 10 and have the shape of pyramids with a triangular base. The base of the end pins 12 is formed by two sides of the sheet 3 and by one side of an end cell 4 and is therefore a right triangle. The base of the intermediate pins 12 is an isosceles triangle constituted by a longitudinal edge of the sheet 3 and by one side of an end cell 4 and a middle cell 4. The tips of the pins 12 are all located at a level below the plane Q, and their outer faces 15, starting from the longitudinal edges of the sheet 3, define two inclined planes p1 (Fig. 2) whose meeting line is horizontal and located in plane P.

De même, les faces extérieures 16 des picots 9 et 12 partant des bords transversaux de la feuille 3 définissent deux plans inclinés dont la ligne de rencontre est horizontale et perpendiculaire au plan P.Likewise, the outer faces 16 of the pins 9 and 12 starting from the transverse edges of the sheet 3 define two inclined planes whose meeting line is horizontal and perpendicular to the plane P.

Etant donné que le corps 1 est thermoformé en une seule opération à partir d'une feuille plane de matière plastique, il est clair que la grande base des picots 9 et 10 ainsi que la base des picots 12 n'est pas matérialisée, contrairement aux petites bases 13 et 14 des picots 9 et 10. En d'autres termes, on peut accéder par le bas jusqu' au sommet de tous les picots 9, 10 et 12. Les deux picots centraux 10 présentent chacun à leur sommet un petit téton cylindrique 10a en saillie vers le haut.Since the body 1 is thermoformed in a single operation from a flat sheet of plastic, it is clear that the large base of the pins 9 and 10 as well as the base of the pins 12 is not materialized, unlike small bases 13 and 14 of the pins 9 and 10. In other words, it is possible to access from the bottom up to the top of all the pins 9, 10 and 12. The two central pins 10 each have a small stud at their top cylindrical 10a projecting upwards.

Enfin, il est prévu dans les sept plages planes étroites 17 séparant les alvéoles 4 les uns des autres des petits cylindres 17a à axe vertical qui servent à maintenir un certain espacement entre les feuilles 3 lorsque les corps 1 seuls sont empilés.Finally, it is provided in the seven narrow flat areas 17 separating the cells 4 from each other of the small cylinders 17a with a vertical axis which serve to maintain a certain spacing between the sheets 3 when the bodies 1 alone are stacked.

Le couvercle 2 est réalisé à partir d'un rectangle 18 découpé entre deux lignes transversales successives 40 affaiblies ou partiellement découpées d'une bande de carton. plat 19 (Fig. 3). On entend par "ligne affaiblie" une ligne de prédéchirure pouvant être facilement déchirée à la main et constituée par exemple par une série de petits trous. Ce rectangle comporte deux lignes de pliure longitudinales 41 situées à peu près à mi-distance entre les bords longitudinaux 42 et l'axe longitudinal X-X, et deux lignes de pliure longitudinales 41 voisines des bords 42. Les lignes 41 se terminent à une faible distance des lignes 40 et se prolongent par des segments découpés 43 légèrement divergents. Les extrémités des lignes 41 sont réunies par deux lignes de pliure transversales 44 et sont reliées aux coins respectifs du rectangle 18 par d'autres lignes de pliure 45. Les deux segments 43 délimitent avec les lignes 40 et 44 un volet central d'extrémité 46 de forme trapézoïdale, tandis que les lignes 40, 45 et 43 définissent deux volets latéraux d'extrémité 47. Les ailes latérales 35 du couvercle 2 sont délimitées par les lignes 41, 42 et 45 et ont une forme trapézoïdale.The cover 2 is produced from a rectangle 18 cut between two successive transverse lines 40 weakened or partially cut from a strip of cardboard. flat 19 (Fig. 3). The term "weakened line" means a pre-tear line which can be easily torn by hand and which consists, for example, of a series of small holes. This rectangle comprises two longitudinal fold lines 41 located approximately halfway between the longitudinal edges 42 and the longitudinal axis XX, and two longitudinal fold lines 41 adjacent to the edges 42. The lines 41 end at a short distance. lines 40 and are extended by slightly divergent cut segments 43. The ends of the lines 41 are joined by two transverse fold lines 44 and are connected to the respective corners of the rectangle 18 by other fold lines 45. The two segments 43 delimit with the lines 40 and 44 a central end flap 46 of trapezoidal shape, while lines 40, 45 and 43 define two lateral end flaps 47. The lateral wings 35 of cover 2 are delimited by lines 41, 42 and 45 and have a trapezoidal shape.

Une aile 35 possède une bande de déchirure longitudinale 48 qui s'étend entre les deux lignes 45 correspondantes, à peu près à mi-distance entre les lignes 41 et 418 associées. La bande 48 est constituée de deux séries symétriques et dans l'ensemble parallèles de fentes coudées 49 présentant successivement dans le sensde la déchirure une partie légèrement divergente 50 et une partie 51 parallèle à l'axe X-X. Au voisinage d'une extrémité de la bande 48 se trouve un organe de préhension 52 défini par une découpe 53 en forme d'ancre marine qui fait apparaître deux languettes 54. Les fentes 49 partent dans les deux sens à partir de l'organe 52, comme indiqué par des flèches portées par cet organe.A wing 35 has a longitudinal tear strip 48 which extends between the two corresponding lines 45, approximately halfway between the associated lines 41 and 41 8 . The strip 48 consists of two symmetrical series and in the parallel set of bent slots 49 having successively in the direction of tearing a slightly divergent part 50 and a part 51 parallel to the axis XX. In the vicinity of one end of the strip 48 is a gripping member 52 defined by a cutout 53 in the form of a sea anchor which reveals two tongues 54. The slots 49 go in both directions starting from the member 52 , as indicated by arrows carried by this body.

L'autre aile 35 du couvercle 2 présente sur toute sa longueur, à peu près à la même distance du bord 42 que la bande 48, une ligne de pliure 55 parallèle à l'axe X-X. A partir de chaque ligne 45, la'ligne 55 se prolonge jusqu'à la ligne 40 adjacente par un segment découpé 56 également parallèle à l'axe X-X.The other wing 35 of the cover 2 has over its entire length, approximately at the same distance from the edge 42 as the strip 48, a fold line 55 parallel to the axis X-X. From each line 45, the line 55 extends to the adjacent line 40 by a cut segment 56 also parallel to the axis X-X.

Enfin, sur l'axe X-X, à peu près à chaque tiers de la longueur de la partie centrale du couvercle comprise entre les lignes 41 et 44, est prévu un trou 57; ce trou a la forme d'un triangle équilatéral dont le cercle inscrit a un diamètre légèrement plus petit que les saillies 108 des picots centraux 10 du corps 1.Finally, on the axis XX, approximately at each third of the length of the central part of the cover between the lines 41 and 44, a hole 57 is provided; this hole has the shape of an equilateral triangle, the inscribed circle of which has a diameter slightly smaller than the projections 10 8 of the central pins 10 of the body 1.

Pour munir le corps 1 du couvercle 2, on pose sur lui le rectangle 18 de façon que les saillies 10a traversent, légèrement à force, les trous 57. Les deux ailes 35 sont ensuite rabattues et collées aux picots latéraux 12 dans leurs régions situées au-dessous de la bande 48 et de la ligne 55 respectivement. Pour ce collage, on introduit dans les picots 9, 10 et 12 des supports de forme appropriée. Ceci amène l'organe de préhension 52 au voisinage d'un picot latéral extrême 12 mais à côté de celui-ci. De plus, à chaque extrémité, le volet 46 est rabattu contre la face extérieure du picot 9 adjacent, et les volets 47 sont rabattus de façon que leurs extrémités supérieures recouvrent les extrémités latérales du volet 46. Ces extrémités sont collées les unes sur les autres. Bien entendu, les zones du rectangle 18 destinées à être collées peuvent être au préalable revêtues - d'une laque thermoscellante ou d'un autre type d'adhésif, par exemple un adhésif adhérant à froid par simple pression. Enfin, on replie vers l'intérieur les bords libres des ailes 35 autour des lignes 41 a, qui se trouvent dans le plan de la feuille 3. Toutes ces opérations s'effectuent automatiquement au moyen de machines classiques.To provide the body 1 with the cover 2, the rectangle 18 is placed on it so that the projections 10a pass, slightly by force, the holes 57. The two wings 35 are then folded down and glued to the lateral pins 12 in their regions located at - below strip 48 and line 55 respectively. For this bonding, supports of appropriate shape are introduced into the pins 9, 10 and 12. This brings the gripping member 52 in the vicinity of an extreme lateral pin 12 but next to it. In addition, at each end, the flap 46 is folded against the outer face of the adjacent pin 9, and the flaps 47 are folded so that their upper ends cover the lateral ends of the flap 46. These ends are glued to each other. . Of course, the areas of the rectangle 18 intended to be bonded can be coated beforehand with a heat-sealing lacquer or another type of adhesive, for example an adhesive which is cold-adhered by simple pressure. Finally, the free edges of the wings 35 are folded inwards around the lines 41 a, which lie in the plane of the sheet 3. All these operations are carried out automatically using conventional machines.

Pour ouvrir la boîte ainsi obtenue, on repousse légèrement une languette 54 avec un ongle pour saisir l'autre languette 54, et on tire du côté correspondant pour arracher une partie de la bande 48, puis on recommence de l'autre côté en saisissant l'autre languette 54. On peut alors saisir par dessous la partie supérieure restante de l'aile 35 ainsi découpée, et, en tirant vers le haut, le couvercle s'ouvre autour de la ligne de pliure 55 située de l'autre côté, les tétons 108 sortant des trous 57.To open the box thus obtained, a tongue 54 is slightly pushed back with a fingernail to grip the other tongue 54, and one pulls on the corresponding side to tear off part of the strip 48, then one starts again on the other side by gripping the another tongue 54. The remaining upper part of the wing 35 thus cut can then be grasped from below, and, by pulling upwards, the cover opens around the fold line 55 located on the other side, the nipples 10 8 emerging from the holes 57.

Pour éviter l'arrachement (qui n'est pas très gênant) des pointes inférieures des volets 47 du côté ouvert de la boîte, les fentes 49 pourraient être prolongées, dans le rectangle 18, jusqu'aux lignes 40.To avoid tearing (which is not very annoying) of the lower points of the flaps 47 on the open side of the box, the slots 49 could be extended, in the rectangle 18, up to the lines 40.

Si moins de six oeufs ont été extraits de la boîte, on peut ensuite refermer le couvercle et le maintenir fermé, avec une certaine regidité, en faisant de nouveau pénétrer les tétons 108 dans les trous 57.If less than six eggs have been extracted from the box, we can then close the lid and keep it closed, with a certain regularity, by again making the nipples 10 8 penetrate into the holes 57.

Bien entendu, en variante, la bande de déchirure 48 peut être réalisée de différentes manières. Ce peut être un fil incorporé au carton, ou encore une bande étroite de matière résistante capable de découper le carton lorsqu'on tire sur son extrémité, par exemple telle que la bande disponible dans le commerce sous la marque déposée "TIRECEL".Of course, as a variant, the tear strip 48 can be produced in different ways. It can be a wire incorporated into the cardboard, or a narrow strip of resistant material capable of cutting the cardboard when its end is pulled, for example such as the strip available commercially under the registered trademark "TIRECEL".

La boîte à oeufs ainsi réalisée est très rigide, et son couvercle 2 ne risque pas de se séparer du corps 1 pendant ses manipulations. De plus, le couvercle peut être réalisé avec un carton peu épais et économique.The egg box thus produced is very rigid, and its cover 2 is not liable to separate from the body 1 during its handling. In addition, the cover can be made with a thin and economical cardboard.

Le stock imprimé, constitué par du carton en bande, est peu encombrant, de même que le stock de corps 1. En outre, l'absence de carton sur les petites faces d'extrémité de la boîte assure une bonne aération des oeufs, encore favorisée par le forme des alvéoles, qui ne supportent les oeufs que par points.The printed stock, consisting of cardboard in strips, is compact, as is the body stock 1. In addition, the absence of cardboard on the small end faces of the box ensures good ventilation of the eggs, again favored by the shape of the alveoli, which only support the eggs in points.

Il est possible, en variante, pour réduire légèrement la dépense en matière plastique, de thermosouder les extrémités des ailes du couvercle sur des petites saillies en V renversé prévues sur les bords longitudinaux de la feuille 3; cependant, on perd alors le soutien latéral des oeufs assuré par les picots 12, qui constitue un autre avantage de la boîte de l'invention, et on est conduit à utiliser un carton plus fort pour constituer le couvercle 2.It is possible, as a variant, to slightly reduce the expense of plastic material, by heat-sealing the ends of the wings of the cover on small projections in inverted V provided on the longitudinal edges of the sheet 3; however, the lateral support of the eggs provided by the pins 12 is then lost, which constitutes another advantage of the box of the invention, and one is led to use stronger cardboard to constitute the cover 2.

Dans le mode de réalisation de la Fig. 4, le rectangle 18b comporte de nouveau les lignes 41, 418, 43 et 45 définies plus haut, à ceci près que les lignes 43 convergent vers l'axe de symétrie X-X. Les trous 57 sont supprimés, ainsi que les tétons 1 O* du corps 1. Aux mêmes emplacements dans le sens longitudinal sont prévues deux lignes affaiblies 58 perpen: diculaires à l'axe X-X; celles-ci s'étendent au-delà des lignes 41 jusqu'à à peu près le tiers de la distance séparant ces lignes 41 des bords 42. De chaque extrémité de chaque ligne 58 partent symétriquement deux lignes affaiblies 59 légèrement inclinées vers l'extérieur par rapport à l'axe X-X. L'ensemble des lignes 59 dessine ainsi, de chaque côté de l'axe X-X, une ligne brisée affaiblie 60 s'étendant d'une ligne 40 à l'autre et comportant trois coudes, un à sa rencontre avec chaque ligne 58 et un à mi-distance entre les deux lignes 58.In the embodiment of FIG. 4, the rectangle 18 b again includes the lines 41, 41 8 , 43 and 45 defined above, except that the lines 43 converge towards the axis of symmetry XX. The holes 57 are removed, as well as the pins 1 O * of the body 1. At the same locations in the longitudinal direction are provided two weakened lines 58 perpen : dicular to the axis XX; these extend beyond the lines 41 to approximately one third of the distance separating these lines 41 from the edges 42. From each end of each line 58 symmetrically two weakened lines 59 slightly inclined towards the outside with respect to the XX axis. The set of lines 59 thus draws, on each side of the axis XX, a weakened broken line 60 extending from one line 40 to another and comprising three elbows, one at its meeting with each line 58 and one midway between the two lines 58.

A l'exception de l'encliquetage des tétons 10", la pose du rectangle 18'3 sur un corps 1 est identique à celle décrite plus haut en regard des Fig. 1 à 3, le collage des ailes 35b s'effectuant sur les picots latéraux 12 au-dessous des lignes 60. On accède à deux oeufs d'extrémité en déchirant les parties des deux lignes 60 comprises entre l'extrémité correspondante du couvercle et la première ligne 58 rencontrée, ainsi que cette ligne 58. On accède ensuite de façon analogue aux deux oeufs suivants, etc. En variante, l'axe X-X pourrait d'ailleurs être matérialisé par une ligne affaiblie pour permettre de ne découvrir qu'un seul oeuf à la fois.With the exception of the latching of the 10 "nipples, the fitting of the rectangle 1 8 '3 on a body 1 is identical to that described above with regard to Figs. 1 to 3, the gluing of the wings 35 b being carried out on the lateral pins 12 below the lines 60. One accesses two end eggs by tearing the parts of the two lines 60 between the corresponding end of the cover and the first line 58 encountered, as well as this line 58. then has similar access to the next two eggs, etc. As a variant, the axis XX could moreover be materialized by a weakened line to allow only one egg to be discovered at a time.

Claims (10)

1. Body of plastics material, in particular transparent, for an egg box, of the type formed by a generally rectangular planar sheet (3) from which downwardly project at least two longitudinal rows of upwardly open convergent cups (4) and upwardly project downwardly open central spigots (9, 10) located between these two rows and downwardly open lateral spigots (12) located alongside each longitudinal edge of the sheet in positions corresponding to the central spigots, this body being characterized in that each lateral spigot (12) has the shape of a pyramid the outer lateral face (15) of which is formed by a planar inclined face, and in that all the outer lateral faces (15) located on a same side are coplanar.
2. Egg box, of the type comprising on the one hand a body (1) of plastics material, in particular transparent, formed by a generally rectangular planar sheet (3) from which downwardly project at least two longitudinal rows of upwardly open convergent cups (4) and upwardly project downwardly open central spigots (9, 10) located between these two rows and downwardly open lateral spigots (12) located alongside each longitudinal edge of the sheet in positions corresponding to the central spigots, and a cover (2) of flat cardboard the centre part of which is supported by the central spigots (9, 10) and is bordered by two downwardly inclined lateral flanges (35) the free ends of which are fixed to lateral portions (12) of said sheet, at least one of the flanges being fixed by adherence, this box being characterized in that the body is as claimed in claim 1 and in that the free end of each lateral flange (35) of the cover (2) adheres to all the outer lateral faces (15) of the lateral spigots (12) located on the same side.
3. Egg box as claimed in claim 2, characterized in that a lateral flange (35) comprises a horizontal tear strip (48).
4. Egg box as claimed in claim 3, characterized in that the tear strip (49) comprises a holding member (52) located between two lateral spigots (12) of said sheet (3).
5. Egg box as claimed in claim 3 or 4, characterized in that the other lateral flange (35) of the cover (2) has a horizontal fold line (55).
6. Egg box as claimed in any one of the claims 3 to 5, characterized in that the centre part of the cover (2) has, in positions corresponding to at least some central spigots (10), apertures (57) in which are capable of being engaged, by application of force, studs (10a) which upwardly project from the top of these spigots.
7. Egg box as claimed in ciaim 2, characterized in that each end edge of the cover (2) has three downwardly folded flaps (46-47), an end portion of the two lateral flaps (47) being superimposed on end portions of the centre flap (46) and being adhered thereto.
8. Egg box as claimed in claim 2, characterized in that the cover (2) has weakened lines (58, 60) arranged for permitting successive access to the eggs contained in the box (1, 2).
9. Egg box as claimed in claim 8, characterized in that the cover (2) has transverse weakened lines (58) located in positions corresponding to each intermediate main spigot (10) and extending from each side to an intermediate place of the lateral flanges (35b), the ends of these weakened lines (58) being interconnected by a roughly horizontal weakened line (60) which extends from one end to the other of the cover.
10. Egg box as claimed in claim 9 having two rows of cups (4), characterized in that the cover (2) also has a centre longitudinal weakened line.
EP19790400299 1978-03-03 1979-05-11 Egg carton Expired EP0006043B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79400299T ATE216T1 (en) 1978-05-31 1979-05-11 EGGBOX.

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
FR7806181A FR2418753A1 (en) 1978-03-03 1978-03-03 Egg box with transparent plastics body - has cardboard lid with central part supported by projections and lateral wings hooked onto body edges
FR7816243A FR2427272A2 (en) 1978-05-31 1978-05-31 Egg box with moulded plastics base and cardboard top - has top adhesively attached to pillars on base with tear strip allowing separation
FR7816243 1978-05-31
FR7832001A FR2440891A2 (en) 1978-11-13 1978-11-13 Egg box with moulded plastics base and cardboard top - has top adhesively attached to pillars on base with tear strip allowing separation
FR7832001 1978-11-13

Publications (2)

Publication Number Publication Date
EP0006043A1 EP0006043A1 (en) 1979-12-12
EP0006043B1 true EP0006043B1 (en) 1981-09-16

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Application Number Title Priority Date Filing Date
EP19790400299 Expired EP0006043B1 (en) 1978-03-03 1979-05-11 Egg carton

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EP (1) EP0006043B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8305815D0 (en) * 1983-03-02 1983-04-07 Brown W R Packaging boxes/cartons
FR2580602B1 (en) * 1985-04-22 1987-12-11 Ono EGG BOX
FR2686575B1 (en) * 1992-01-27 1995-05-05 Rochette Cartotec CLOSED PACKAGING FOR FOOD PRODUCTS AND ASSOCIATED IMPLEMENTATION DEVICE.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3372856A (en) * 1967-05-23 1968-03-12 Burd & Fletcher Company Lid for egg carton
FR2098626A5 (en) * 1970-07-22 1972-03-10 Baker Theodore

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EP0006043A1 (en) 1979-12-12

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