EP4090605B1 - Packaging - Google Patents

Description

The invention relates to packaging, comprising on the one hand, a container having side walls meeting at corners, a bottom and an upper opening, as well as a cover intended to close the upper opening of the container.

Technical area

The field of the invention is that of plastic packaging conventionally obtained by injection molding of the lid and the container, and both cooperating elastically.

Prior art

A package is known from the state of the art in which the container and the lid respectively have a first engagement part, at the level of the upper opening of the container, and a second engagement part, at the periphery of the lid intended to fit into one another, elastically.

The first engagement part of the container comprises an edge directed outwards, and extending over the periphery, the second engagement part of the lid being provided with an edge, directed inwards, arranged on a skirt of the second engagement part, which is able to hook below the edge directed towards the outside of the container, to ensure the locking of the lid on the container.

The outward-facing edge of the container, on the one hand, and the inward-facing edge of the lid, on the other hand, have curved angle sections in the corners where said side walls meet, said sections curved angles connecting the side sections of the respective edges.

In such a state of the art, the positioning and locking of the lid on the container is put in place by force, conventionally by means of a jack actuator which presses on the center of the lid in order to cause the nesting of the first engagement part of the container in the second engagement part, and until the edge directed towards the inside of the cover passes above the edge directed towards the outside of the container . The mutually engaging surfaces between the two edges oppose the detachment of the cover.

Removing the lid is typically carried out by the end user, and may prove difficult for some, or even require the help of a tool such as a screwdriver to detach the lid from the container.

However, the state of the art knows such packaging equipped in itself with functional parts of the lid and/or the container, making it easier to remove the lid.

One of the solutions is disclosed by the document EP 0 110 859 and consists of providing a folding skirt section on the cover, at one of the curved angle sections of the edge directed inwards, articulated to a folding zone, such as a flexible hinge, at the upper part of the second engagement portion of the cover. This folding skirt section is able to fold from an engagement position towards a position directed outwards so that a central part of said at least one angle section of the edge directed inwards is moved away by leverage from the edge directed towards the outside of the upper opening, and that the engagement between the edges respectively directed towards the inside and the outside is thus weakened on the central part.

In the engaged position, the folding skirt section is separated from the remaining skirt section by means of two grooves formed in the outer surface of the skirt and extending downwardly from a folding area to the lower edge of the skirt, said grooves reducing the wall thickness of the skirt so that the skirt can be broken along the grooves to fold the folding skirt section, from its engaged position, towards its facing position the exterior.

Such a solution comprising a folding skirt section greatly facilitates the opening of the lid where it is most difficult (ie a corner), by weakening the connection between the lid and the container in this corner, and advantageously combines an opening indicator function, the two breakable grooves being broken irreversibly, after raising the skirt section. In the document EP 0 110 859 , the inwardly directed edge is carried by the folding skirt section, located below the flexible hinge between the folding skirt section and the second engagement part. It is however possible to provide the edge directed inwards above the flexible hinge, as disclosed by the document EP2523866 , and so that this edge is not cut when lifting the folding skirt section, and in order to preserve the seal between the lid and the container after the first opening.

A defect of such packaging, in particular during their transport, for example when they are stacked on pallets, is that shocks can cause unfortunate supports under the folding skirt section and be the cause of their accidental folding. In such a case the two grooves separating the skirt and the folding skirt section are broken, indicating that the packaging has been opened. In the case of transport of a high value product, the end customer may notice that the breakable grooves, which act as opening indicators, have been broken during transport, and thus decide to refuse delivery, which constitutes a significant financial loss.

• ces nervures extérieures s'étendent chacune ainsi verticalement au-dessous de la première portion d'engagement du récipient (portant l'arête dirigée vers l'extérieur), et présente à son extrémité basse un plat destiné à coopérer en butée avec le bord supérieur de l'ouverture supérieure du récipient à l'intérieur duquel est empilé le récipient : Des telles nervures verticales ont pour fonction première de garantir un pas d'empilage constant entre deux récipients lorsque ces derniers sont empilés l'un dans l'autre,
• de manière notable toutefois, et tel qu'enseigné par FR 3 081 449 A1 , ces nervures extérieures sont avantageusement positionnées au niveau des coins du récipients, chaque nervure s'étendant judicieusement depuis son extrémité basse et jusqu'à la hauteur de ladite section de jupe repliable alors en position d'engagement : cette position de la nervure extérieure, verticale, à proximité et en dessous de la section de jupe repliable, voire même la rampe ainsi créée, constituent avantageusement un obstacle limitant les risques d'une ouverture accidentelle des sections de jupe repliable, dans le cas d'un appui malheureux qui viendrait accidentellement, lors d'une manipulation non contrôlée, appuyer sous la section de jupe, jusqu'à provoquer son repliage avec rupture non souhaitée des rainures constituant témoins d'ouverture.

The present Applicant has proposed to address this problem in the document FR 3 081 449 A1 , showing packaging according to the preamble of claim 1 comprising a judicious positioning of vertical ribs, external to function of stacking pitch:

• these external ribs each extend vertically below the first engagement portion of the container (carrying the edge directed outwards), and present at its lower end a plate intended to cooperate in abutment with the upper edge of the upper opening of the container inside which the container is stacked: The primary function of such vertical ribs is to guarantee a constant stacking pitch between two containers when the latter are stacked one inside the other,
• in a notable way, however, and as taught by FR 3 081 449 A1 , these external ribs are advantageously positioned at the corners of the containers, each rib extending judiciously from its lower end and up to the height of said folding skirt section then in the engaged position: this position of the external rib, vertical, near and below the folding skirt section, or even the ramp thus created, advantageously constitutes an obstacle limiting the risks of 'an accidental opening of the folding skirt sections, in the case of an unfortunate support which would accidentally, during uncontrolled handling, press under the skirt section, until causing its folding with undesired rupture of the grooves constituting opening indicators.

According to the findings of the present Applicant, such positioning of the external ribs to the right of the folding skirt sections makes it possible to reduce the number of accidental openings and the number of ruptures of the breakable grooves serving as an opening indicator during transport. and deliveries. However, even if the rate of accidental openings of the opening indicators is greatly reduced, the latter is still not zero. This is a first problem to which the present disclosure provides a solution.

Furthermore, and according to the findings of the inventors, such an opening indicator is however not completely reliable: it remains possible to detach the lid from the container, while maintaining the folding skirt section in its engaged position, this that is to say without having to raise it, and thus cut the two breakable grooves. For example, it is often possible to detach the cover at one corner, by simultaneously pressing, with one hand, strongly under the skirt section, exerting an effort tending to unhook the cover, and with the other hand , by constraining the skirt section radially towards the container, and so as to prevent the grooves from being severed. This results in the detachment of the cover without breaking the breakable grooves. It is still known from the state of the art to double the hooking edges at the corners, with another pair of edges, respectively directed outwards and inwards, mutually engaging capable of hang between them, arranged respectively on the first engagement part of the container and on the second part, and in order to increase the hooking at the corner. According to the findings of the inventors, provide a double pair of edges mutually attached to the The level of the corners still does not prevent fraudulent opening, because it remains possible to play on the elasticity of the plastic in order to detach the cover, and always without breaking the breakable grooves. This is a second problem to which the present disclosure intends to provide a solution, at least according to one embodiment.

Summary

The aim of the present disclosure is to overcome the aforementioned drawbacks by proposing a packaging comprising a lid and a container of the type as described in the document EP 0 110 859 or FR 3 081 449 A1 , which includes a folding skirt section making it easy to detach the cover, drastically reducing the number of accidental openings of the folding skirt sections.

Another aim of the present disclosure is to propose, at least according to one embodiment, such packaging limiting the risks of fraudulent openings, namely the detachment of the cover without breaking the breakable grooves serving as an opening indicator.

Another aim of the present invention is to provide such packaging whose design does not complicate the injection molding equipment necessary for its manufacture, and therefore its cost price.

Another aim of the present invention is to provide such packaging whose resistance to load during stacking of the packaging is significantly improved compared to the aforementioned state of the art.

Other purposes and advantages will appear during the description which is given for information only and is not intended to limit it.

The invention also relates to a method of manufacturing a package according to the invention in which said cover and said container are obtained by injection molding.

To this end, the present invention firstly relates to packaging as described in claim 1 comprising, on the one hand, a plastic container, comprising side walls meeting at corners, a top opening and a bottom, and on the other hand, a cover, detachable plastic configured to cover the upper opening of the container, and in which the container is provided at its upper opening with a first engagement portion carrying an edge directed outwards, and extending over the periphery, said cover being provided on its peripheral part with a second engagement portion extending folded downwards provided with an edge, directed towards the inside which is able to hook below the edge directed towards the outside of the container, and in which the second portion engagement portion of the lid has a skirt extending over the lower part of the second engagement portion, and in which the edge of the container directed outwards, on the one hand, and the edge of the lid directed towards the interior, on the other hand, having curved angle sections in the corners where said side walls meet, said curved angle sections connecting the side sections of the respective edges, where at least one of the curved angle sections of the inwardly directed edge is provided with a folding skirt section, hinged to a folding zone at the upper part of the second engagement portion which is capable of folding from an engagement position to a directed position outwards so that a central part of said at least one angle section of the inwardly directed edge is levered away from the outwardly directed edge of the upper opening, and that the engagement between the edges is thus weakened on the central part.

According to the present disclosure, the container comprises, at the level of the folding skirt section of the cover, a receiving portion forming a shield for the free end of the folding skirt section, with a housing receiving said free end in the position of engagement of the folding skirt section, said receiving portion being configured to prohibit folding of said folding skirt section to said outwardly directed position, and wherein said receiving portion is configured to be deformed to release the end free and allow the pivoting of the folding skirt section from the engagement position towards said position directed outwards.

According to the present disclosure, the housing comprises a front wall, extending overlapping, in front of the free end of the folding skirt section in the engagement position of the folding skirt section, said front wall then constituting a stop preventing the folding of said folding skirt section towards said position directed outwards, and in which said front wall is configured to be deformed by an operator to a retracted position allowing the free end to be released and the folding skirt section to be able to pivot around the folding zone from the engagement position towards the outward pointing position.

According to the present disclosure, the free end of the folding skirt section has a curved profile, along a plane parallel to the cover, and in which the housing of the receiving portion has, in length, a curved trajectory receiving the curved profile of the free end.

According to the present disclosure, the front wall is secured to its longitudinal ends via material bridges respectively connecting the longitudinal ends of the front wall and the side or corner walls of the container, and in which a groove reducing the thickness of the wall frontal is provided at one of the longitudinal ends of the front wall, configured so as to break by separating the longitudinal end of the material bridge when the front wall is deformed to the retracted position.

According to one embodiment, the front wall deformed after breaking the groove to the retracted position and allowing the skirt section to be folded towards the position directed outwards, is still adjacent to the container via the other longitudinal end .

According to one embodiment, the engagement portion of the container carrying the edge directed outwards extends and extends below the edge, called the first edge, and ends below the first edge, by a second edge, also directed outwards, and in which the housing receiving the free end of the folding section comprises a dorsal wall whose upper end is secured to said second edge, the dorsal wall being secured to the front wall via a bottom wall connecting the lower end of the back wall and the lower end of the front wall, the section comprising the front wall, the back wall and the bottom wall forming a section of the U-shaped housing receiving the free end of the folding skirt section

According to one embodiment, the folding skirt section carries at least one lug, directed inwards, which in the engagement position of the folding skirt section, is able to hook under the second edge directed towards the exterior of the first engagement portion, at least when a force is applied to the cover tending to detach it,
and in which the attachment of said at least one lug on the second edge is carried out, in the engagement position of the folding skirt section in a local zone only along the curved angle section of the second edge directed towards the exterior, and with a hooking overlap between the mutually engaging faces of said at least one lug and the second edge, when seen in a radial direction to the curved section of the second edge, of dimension greater than the hooking overlap between the mutually engaging faces of the inwardly directed edge and the first outwardly directed edge, when viewed in a direction radial to the curved section of the first edge.

According to one embodiment, the attachment of said at least lug under the second edge is carried out at the level of a local zone devoid of dorsal wall.

According to one embodiment, the folding skirt section of the cover having a through recess extending along the height of the folding skirt section, above and to the right of said at least one lug.

According to one embodiment, said through recess extends from its lower part from said at least one lug and to the folding zone between the folding skirt section and the upper part of the second engagement part, and only along the length of the lug.

According to one embodiment, the engagement position of the folding skirt section, and when no external force is applied to the cover, the attachment between the edge directed inwards and the first edge directed towards the outside is clear, while a clearance separates the second edge directed outwards and said at least one lug positioned under the second edge, said lug coming into hooking contact with the second edge only when the cover is subjected to a force.

According to the present disclosure, said foldable skirt section is separated from the remaining skirt section by means of two grooves formed in the outer surface of the skirt and extending downward from the folding zone to the lower edge of the skirt, said grooves reducing the wall thickness of the skirt so that the skirt can be broken along the grooves to fold the collapsible skirt section from its engaged position to its outward facing position

According to one embodiment, the container has four side walls meeting at four corners, the edge directed towards the inside of the cover having four sections of curved angle with four sections of folding skirt, and four receiving portions respectively receiving the ends free of the four sections of folding skirt

According to one embodiment, the folding skirt section carries said at least one lug, as well as the edge directed inwards, both positioned under the folding zone, in the engagement position of the folding skirt section .

According to one embodiment, the first engagement part of the container extends below the edge directed outwards by first clipping means and the second engagement part extends below the directed edge inwards by second clipping means, said first clipping means and second clipping means being mutually engaging; at an intermediate local area along the edges of the container on the side sections between the curved angle sections where the inward-facing edge of the lid engages the outward-facing edge of the container.

According to one embodiment, the first clipping means comprise at least one opening, and the second clipping means comprise an elastically deformable tooth, configured to be inserted elastically into said opening by hooking it.

According to one embodiment, the peripheral wall of the cover immediately extending the second engagement part comprises along the edges of the cover on the lateral sections between the curved angle sections, where the edge directed towards the inside of the cover hooks the 'edge directed towards the outside of the container, counter-support ribs, projecting, vertical, positioned under the cover, oriented towards the outside, forming between the curved angle sections a plurality of counter-supports on the internal faces of the side walls of the container, distributed over the periphery of the container, reinforcing the hooking between the ridges hooking along the edges of the cover between the curved angle sections.

According to one embodiment, said packaging comprises wedging ribs, extending projecting over the periphery of the cover, inwards relative to the second engagement part and upwards relative to the horizontal wall of the cover , said wedging ribs being distributed over the inner periphery of the second engagement part, so as to receive between them by centering it the lower part of a container of identical packaging superimposed on the horizontal wall of the cover, said ribs of wedging constituting stops with the lower part of the side walls of the superimposed container.

According to one embodiment, the container has external ribs each extending vertically below the first engagement portion, each rib having at its lower end a plate intended to cooperate in abutment with the upper edge of the upper opening of the container inside which the container is stacked, the exterior ribs being provided at least partly in the corners, extending vertically below each receiving portion, at least up to the height of the receiving portion .

The present invention also relates to a method of manufacturing a package according to claim 16 in which said cover and said container are obtained by injection molding.

Brief description of the drawings

• Fig. 1
  [Fig. 1] est une vue en perspective d'un emballage conforme à la présente divulgation comprenant un récipient dont l'ouverture supérieure est obturée par un couvercle dudit emballage, avec présence de sections de jupe repliable du couvercle, aux coins du récipient en position d'engagement avec le récipient, les extrémités inférieures des sections repliables reçues prisonnières dans des portions de réceptions du couvercle
• Fig. 2
  [Fig. 2] est une vue de coupe selon un plan sensiblement horizontal, parallèle au couvercle, passant à mi-hauteur des quatre portions de réception, aux quatre coins du récipient, recevant les extrémités libres de quatre sections de jupe repliables en formant pour chacune un bouclier évitant un relevage intempestif de la section de jupe repliable.
• Fig. 3
  [Fig. 3] est une vue de détail d'un système de clipsage, supplémentaire à celui de l'engagement entre l'arête dirigée vers l'extérieur de la première portion d'engagement et de l'arête dirigée vers l'extérieur de la deuxième position d'engagement, localisé sur les sections latérales entre les coins, et comportant des ouvertures portées par la première portion d'engagement et des dents élastiquement déformables, portées par la deuxième portion d'engagement, engagées dans les ouvertures.
• Fig. 4
  [Fig. 4] est une vue de coupe, selon un plan vertical, illustrant le système de clipsage local, avec ouvertures et dents élastiquement déformables.
• Fig. 5
  [Fig. 5] est une vue de coupe, selon un plan de coupe passant par la section la jupe, illustrant l'emboîtement de la première portion d'engagement du récipient sur la deuxième portion d'engagement du couvercle avec coopération de la nervure dirigée vers l'intérieur, accrochée sous la nervure dirigée vers l'extérieur, et illustrant en arrière-plan, un système de clipsage ; localisé en une position intermédiaire entre les deux coins, comportant des dents élastiquement déformables de la deuxième partie d'engagement du couvercle, saillantes vers le bas, reçues dans des ouvertures d'un épaulement de la première partie d'engagement du récipient, l'épaulement portant les ouvertures de la première partie d'engagement du récipient étant prolongée vers le bas par une aile formant une poignée, saillante latérale de la paroi latérale du récipient
• Fig. 6
  [Fig. 6] est une vue de coupe, selon un plan sensiblement vertical passant par le système de clipsage de la figure 5 et l'aile formant la poignée, une nervure de renfort s'étendant en liaison entre la paroi latérale du récipient et l'aile formant poignée, ladite nervure se prolongeant vers le bas et jusqu'à un plat, cette nervure constituant une nervure à fonction de pas d'empilage, notamment en combinaison avec des nervures verticales s'étendant en dessous de la première partie d'engagement, au niveau des sections de cornières incurvées
• FIG 7
  [Fig. 7] est une vue de détail, en perspective, de la section de jupe repliable dans sa position d'engagement, et dont l'extrémité libre de la section de jupe reçue dans un logement d'une portion de réception solidaire du récipient et, formant un bouclier contre les repliages accidentels de la section de jupe repliable
• FIG 8
  [Fig. 8] est vue de coupe, selon un plan vertical passant par la première portion d'engagement et de la deuxième portion d'engagement mutuellement en engagement, et plus particulièrement par la section de jupe repliable alors en position d'engagement, l'extrémité libre de la section de jupe prisonnière dans un logement dont la section en U, comprend une paroi frontale s'étendant en recouvrement de la section de jupe devant la section de jupe repliable, une paroi dorsale, s'étendant derrière la section de jupe repliable, et une paroi de fond reliant l'extrémité inférieure et la paroi dorsale et l'extrémité inférieure de la paroi frontale, la figure 8 illustrant en pointillés la manière dont la paroi frontale est déformée pour libérer le repliage de la section de jupe repliable, et ainsi permettre l'ouverture du couvercle.
• FIG. 9
  [Fig. 9] est une vue de coupe selon un plan légèrement décalé à celui de la figure 8, passant par une zone de la partie de réception, dans laquelle le logement est dépourvu (localement) de paroi dorsale, un ergot de la section de jupe repliable positionné en dessous de l'arête dirigée vers l'intérieur, venant en recouvrement en dessous d'une seconde arête de la première partie d'engagement, positionnée en dessous de l'arête dirigée vers l'extérieur, et selon un recouvrement d'accrochage entre l'ergot et la seconde arête supérieur à celui entre respectivement l'arête dirigée vers l'extérieur et l'arête dirigée vers l'intérieur.
• FIG 10
  [FIG 10] est une vue de coupe, selon un plan horizontal illustrant l'extrémité de la section de jupe repliable, de trajectoire incurvée selon la plan horizontal, prisonnière dans le logement, entre la paroi frontale qui s'étend de manière continue devant l'extrémité libre de la section de jupe repliable et la paroi dorsale qui s'étend de manière discontinue derrière la section de jupe repliable.
• FIG 11
  [FIG 11] est une vue de dessous de la portion de réception de la figure 7, illustrant la paroi de fond du logement, la paroi de frontale, et la paroi dorsale qui s'étend de manière discontinue, en laissant des évidements permettant à deux ergots de se la section de jupe repliable de venir en recouvrement d'accrochage avec une seconde arête de la première portion d'engagement du récipient
• FIG 12
  [FIG 12] est une vue variante de la figure 7, avec deux nervures supplémentaires, s'étendant, avec les nervures à fonction de pas d'empilage dans l'inter-espace et la paroi de coin du récipient et la portion de réception, faisant obstacle à un décrochage frauduleux des ergots depuis la face inférieure (par exemple insertion de doigt, tournevis... dans ledit inter-espace.)
• FIG 13
  [FIG 13] est une vue de dessous de la figure 12.

Other characteristics, details and advantages will appear on reading the detailed description below, and on analyzing the appended drawings, including:

• Fig. 1
  [ Fig. 1 ] is a perspective view of a package according to the present disclosure comprising a container whose upper opening is closed by a cover of said package, with the presence of foldable skirt sections of the cover, at the corners of the container in the engaged position with the container, the lower ends of the folding sections received captive in receiving portions of the cover
• Fig. 2
  [ Fig. 2 ] is a sectional view along a substantially horizontal plane, parallel to the cover, passing halfway up the four receiving portions, at the four corners of the container, receiving the free ends of four foldable skirt sections, each forming a shield preventing unintentional lifting of the folding skirt section.
• Fig. 3
  [ Fig. 3 ] is a detailed view of a clipping system, additional to that of the engagement between the edge directed towards the outside of the first engagement portion and the edge directed towards the outside of the second position engagement, located on the lateral sections between the corners, and comprising openings carried by the first engagement portion and elastically deformable teeth, carried by the second engagement portion, engaged in the openings.
• Fig. 4
  [ Fig. 4 ] is a sectional view, along a vertical plane, illustrating the local clipping system, with openings and elastically deformable teeth.
• Fig. 5
  [ Fig. 5 ] is a sectional view, according to a sectional plane passing through the skirt section, illustrating the nesting of the first engagement portion of the container on the second engagement portion of the lid with cooperation of the rib directed towards the interior, hung under the rib pointing outwards, and illustrating in the background, a clipping system; located in an intermediate position between the two corners, comprising elastically deformable teeth of the second engagement part of the cover, projecting downwards, received in openings of a shoulder of the first engagement part of the container, the shoulder carrying the openings of the first engagement part of the container being extended downwards by a wing forming a handle, projecting laterally from the side wall of the container
• Fig. 6
  [ Fig. 6 ] is a sectional view, along a substantially vertical plane passing through the clipping system of the Figure 5 and the wing forming the handle, a reinforcing rib extending in connection between the side wall of the container and the wing forming the handle, said rib extending downwards and up to a plate, this rib constituting a rib to stacking pitch function, in particular in combination with vertical ribs extending below the first engagement part, at the level of the curved angle sections
• FIG 7
  [ Fig. 7 ] is a detail view, in perspective, of the foldable skirt section in its engaged position, and of which the free end of the skirt section received in a housing of a receiving portion secured to the container and, forming a shield against accidental folding of the folding skirt section
• FIG 8
  [ Fig. 8 ] is seen in section, along a vertical plane passing through the first engagement portion and the second engagement portion mutually in engagement, and more particularly through the foldable skirt section then in the engagement position, the free end of the captive skirt section in a housing whose U-shaped section comprises a front wall extending in covering the skirt section in front of the folding skirt section, a back wall, extending behind the folding skirt section, and a bottom wall connecting the lower end and the back wall and the lower end of the front wall , there figure 8 illustrating in dotted lines the manner in which the front wall is deformed to release the folding of the folding skirt section, and thus allow the opening of the cover.
• FIG. 9
  [ Fig. 9 ] is a sectional view on a plane slightly offset from that of the figure 8 , passing through a zone of the receiving part, in which the housing is devoid (locally) of a dorsal wall, a lug of the folding skirt section positioned below the edge directed inwards, overlapping below a second edge of the first engagement part, positioned below the edge directed outwards, and according to a hooking overlap between the lug and the second edge greater than that between respectively the directed edge outwards and the edge directed inwards.
• FIG 10
  [ FIG 10 ] is a sectional view, along a horizontal plane illustrating the end of the folding skirt section, of curved trajectory along the horizontal plane, trapped in the housing, between the front wall which extends continuously in front of the end free of the folding skirt section and the back wall which extends discontinuously behind the folding skirt section.
• FIG 11
  [ FIG 11 ] is a bottom view of the receiving portion of the Figure 7 , illustrating the bottom wall of the housing, the front wall, and the back wall which extends discontinuously, leaving recesses allowing two lugs to come into hooking overlap with a folding skirt section. second edge of the first engagement portion of the container
• FIG 12
  [ FIG 12 ] is a variant view of the figure 7 , with two additional ribs, extending, with the ribs having a stacking function in the inter-space and the corner wall of the container and the receiving portion, preventing fraudulent unhooking of the lugs from the face lower (for example insertion of finger, screwdriver, etc. in said inter-space.)
• FIG 13
  [ FIG 13 ] is a bottom view of the Figure 12 .

Description of embodiments

The drawings and description below contain, for the most part, elements of a certain nature. They can therefore not only be used to better understand this disclosure, but also contribute to its definition, if necessary.

The invention relates to a packaging 1 comprising, on the one hand, a plastic container 2, comprising side walls 20, 21, 22, 23 meeting at corners 24, an upper opening 25 and a bottom 26, and on the other hand, a cover 4, detachable plastic configured to cover the upper opening of the container.

The side walls 20, 21, 22, 23 can be substantially divergent, forming a truncated pyramid between them, configured so that the container is stackable inside an identical container.

The container 2 is provided at its upper opening 25 with a first engagement portion 27 carrying an edge 28 directed outwards, and extending over the periphery, said cover 4 being provided on its peripheral part with a second engagement portion 40 extending folded downwards, provided with an edge 41, directed towards the inside which is able to hook below the edge 28 directed towards the outside of the container.

Also, and in the section view of the Figure 4 we note that the first engagement part 27 penetrates a groove of the second engagement part 40, open downwards. The first engagement part 27 comprises an inverted U-shaped section, including a first length section extending the wall interior upwards, followed by a second length section, inclined relative to the first section, for example horizontal, followed by a third length section, inclined relative to the second section and extending downwards, this third section carrying the edge 28 directed outwards.

Also, and in the section view of the Figure 4 , we note that the second engagement part 40 forms a groove open downwards, receiving the first engagement part 27. The second engagement part 40 comprises an inverted U-shaped section, including a first section of length extending the upper wall of the cover, followed by a second length section, inclined relative to the first section, for example horizontal, followed by a third length section, inclined relative to the second section and extending downwards by forming a skirt 42, this third section carrying the edge 41 directed inwards.

The second engagement portion of the cover thus has the skirt 42 which extends over the lower part of the second engagement portion 40, the edge 28 of the container directed towards the outside, on the one hand, and the edge 41 of the cover 4 directed inwards, on the other hand, having curved angle sections 29, 43 in the corners where said side walls meet, said curved angle sections connecting the side sections of the respective edges.

At least one of the curved angle sections 43 of the edge 41 directed inwards is provided with a folding skirt section 44, articulated to a folding zone 46 at the upper part of the second engagement portion 40 which is able to fold from an engagement position P1 towards a position directed outwards so that a central part of said at least one angle section of the edge directed inwards 41 is moved aside by leverage of the edge 28 directed towards the outside of the upper opening, and that the engagement between the edges 28, 41 is thus weakened on the central part.

Such a folding skirt section makes it easier for the user to detach the cover, and without requiring the use of a tool such as a screwdriver: the weakening is obtained simply by moving the section of the skirt outwards. folding skirt 44 which pivots relative to the rest of the cover around the folding zone 46.

According to the present disclosure, said folding skirt section 44 is, in its engaged position, separated from the remaining section of the skirt by means of two grooves 45 formed in the outer surface of the skirt and extending downwardly from the folding zone 46 to the lower edge of the skirt: said grooves 45 reduce the wall thickness of the skirt so that the skirt can be broken along the grooves in order to fold the folding skirt section, from its position engagement P1, towards its position directed outwards. These grooves 45, once irreversibly broken, constitute indicators of openings.

According to the present disclosure, the container comprises, at the level of a folding skirt section 44 of the cover 4, a receiving portion 7 forming a shield for the free end El of the folding skirt section 44, with a housing 70 receiving said free end El of the folding skirt section 44 in the engagement position P1 of the folding skirt section 44.

Such a receiving portion 7 is illustrated in detail according to an exemplary embodiment according to the views of the figures 7 to 11 .

Said receiving portion 7 is advantageously configured to prevent the folding of said folding skirt section 44 towards said position directed outwards when said free end El of the folding section is received captive in the housing 70. When transporting the packaging, and even in the event of shocks and inappropriate support due to transport at the level of the curved angle sections, the receiving portion is a shield preventing the inappropriate support from accidentally folding the skirt section outwards, and thus break any grooves 45 with an opening indicator function

This receiving portion 7 is also configured to be deformed by an operator to release the free end and authorize the pivoting of the folding skirt section 44 from the engagement position P1 towards said position directed outwards.

Thus and to allow the removal of the cover, the operator first deforms the receiving portion 7, in order to release the possibility of pivoting of the folding skirt section 44 around the folding zone 46, then folds the section of foldable skirt; from the engagement position P1 towards a position directed outwards which makes it possible to weaken the connection at this corner. In the case of several folding sections at different corners of the container, the operator successively performs these two operations for each corner 24.

As visible for information purposes only figure 8 , and in general, the housing can comprise a front wall 71, extending overlapping, in front of the free end of the folding skirt section 44 in the engagement position P1, the free end of the skirt section folding 44 then positioned between the corner 24 and said front wall 71, said front wall 71 then constituting a stop preventing the folding of said folding skirt section 44 towards said position directed outwards.

Said front wall 71 is configured to be deformed by an operator up to a retracted position PE, in particular illustrated in dotted lines at the figure 8 making it possible to release the free end and to authorize the pivoting of the folding skirt section 44 from the engagement position P1 towards said position directed outwards

The front wall 71 is secured at its longitudinal ends via material bridges 75 respectively connecting the longitudinal ends of the front wall 71 and the side or corner walls of the container. These bridges of material 75 take the form of vertical ribs.

A groove 72 reducing the thickness of the front wall 71 can be provided at one of the longitudinal ends of the front wall 71 configured so as to break by separating the longitudinal end of the bridge of material when the front wall 71 is deformed to the retracted position PE.

Once deformed in the retracted position PE, the groove 72 is broken, but preferably the front wall 71 is still adjacent to the body of the container, for example by the other longitudinal end of the front wall 71, and/or also via sections of the bottom wall 24.

According to an advantageous embodiment, and as understandable to the Figure 9 , the engagement portion 27 of the container carrying the edge 28 directed outwards extends and extends below the edge, called the first edge, and ends below the first edge, with a second edge 30, also directed outwards.

The housing 70 receiving the free end of the folding skirt section 44 may comprise a dorsal wall 73 whose upper end is in particular secured to said second edge 30, the dorsal wall 73 being secured to the front wall 71 via a wall of bottom 74 connecting the lower end of the dorsal wall 73 and the lower end of the front wall 71.

As understandable from the figure 8 , the section comprising the front wall 71, the back wall 73 and the bottom wall 74 forms a section of the U-shaped housing 70 receiving the free end El of the folding skirt section 44 in the engagement position P1.

As can be understood from the figures, the free end of the folding skirt section 44 has a curved profile, following a plane parallel to the cover. The housing 70 of the receiving portion 7 has, in length, a curved trajectory receiving the curved profile of the free end of the folding skirt section 44.

The receiving portion 7 extends according to an advantageous embodiment over the entire length of the free end of the folding skirt section 44. This receiving portion 7 then forms a shield preventing unwanted support, advantageously over the entire length of the free end of the folding skirt section 44.

According to the invention and notably, and when the first engagement portion 27 of the container carrying said first edge 28 directed outwards extends and extends below the edge, and ends below the first edge by a second edge 41, said folding skirt section 42 can carry at least one lug 47.

Said minus one lug 47 is directed inwards. In the engagement position P1 of the folding skirt section 4, said at least one lug 47 is able to hook under the second edge 30 directed towards the outside of the first engagement portion, at least when a force is applied to the cover tending to detach it.

Noticeably, the attachment of said at least one lug 47 to the second edge 30 is carried out, in the engagement position P1 of the folding skirt section in a local area only, along the curved section of the second edge 30 directed outwards: the lug 47 extends along the length of the second edge 30 only on part of the second edge 30: for example the lug extends along the second edge along a dimension less than 1 /3, or even 1/5 of the length of the second edge 30 on the curved angle section.

Notably, the hooking overlap Rac2 between the mutually engaging faces of said at least one lug 47 and the second edge 30, in a direction radial to the curved section of the second edge 30, is of greater dimension than the overlap of hooking Rac1 between the mutually engaging faces of the edge 41 directed towards the inside and the first edge 28 directed towards the outside, in a radial direction to the curved section of the first edge 28.

The Rac2 and Rac1 hooking overlaps are visible for information purposes only. Figure 9 : we see that the hooking overlap Rac2 between the lug 47 and the second edge 30 is much greater than the hooking overlap Rac1 between the edge 41 directed towards the inside and the edge 28 directed towards the outside.

Also, and in the event of a fraudulent opening attempt, and even assuming that the edge 41 directed inwards becomes detached from the first edge 28, due to the lower hooking coverage Rac1, said at least one lug 47 always hooks the second edge 30, due to a greater hooking overlap Rac2: for example, the hooking overlap Rac2 between said at least one lug 47 and the second edge 30 is at least two times greater than the hooking overlap Rac1 between the edge 41 directed towards the inside and the first edge 28 directed towards the outside.

Thus, it only becomes possible to detach said at least one lug 47 from the second edge 30 by folding the folding skirt section 44 and advantageously following an amplitude of movement requiring the rupture of the grooves 45. This significantly increases the reliability of this opening indicator.

As such, we see that the dimension of the lug 47 directed towards the inside is much greater than the dimension of the edge 41 directed towards the inside. As such, the folding skirt section 42 of the cover 4 may have a through recess 48 extending along the height of the folding skirt section 44, above and to the right of said at least one lug 47. The function of this obviously is to facilitate the unmolding of the cover after injection molding during its manufacture: otherwise the large dimension of the lug towards the inside, necessary to obtain the Rac2 hooking cover, makes demolding tedious, if not impossible without any particular arrangement of the mold.

We note that this through recess 48 implicitly weakens the folding skirt section 44: also this recess extends only over the area necessary to facilitate demolding, that is to say that this recess is located to the right of said at least lug 47, which itself extends over a short section of length following the angle section 43, and in order to limit the size of this recess. Ultimately, a compromise is obtained between the ease of implementation during the injection molding manufacturing process, and the strength of the attachment between the folding skirt section and the container in this corner.

As illustrated in Figure 7 , said through recess 48 extends, for example from its lower part from said at least one lug 47 and to the folding zone 46 between the folding skirt section 44 and the upper part of the second part d engagement 40, and only on the length of lug 47.

In the engagement position P1 of the folding skirt section, and when no external force is applied to the cover as illustrated in Figure 9 , the connection between the edge 41 directed towards the inside and the first edge 28 directed towards the outside is clear, while a clearance J can separate the second edge 30 directed towards the outside and said at least one lug 47 positioned under the second edge 30: in such a case said lug 47 comes into hooking contact with the second edge 30 only when the cover 4 is subjected to a force, for example a force tending to detach the cover, or even a significant load on the cover, such as for example when the packages according to the invention are stacked (stacked) on top of them. others.

We also note that the attachment of said at least lug 47 under the second edge is carried out at the level of a local zone Z devoid of dorsal wall and as visible at the Figure 11 . Thus the dorsal wall 73 can extend discontinuously along the curved trajectory of the housing 70, leaving one or more local zones Z, to allow one or more lugs 47 to come into hooking overlap on the second stops 30.

As such, such an embodiment with lug 47 further improves the resistance to stacking of the packaging, and more particularly the holding of the lid of the lowest packaging in the stack: under the effect of the weight of the column, in state-of-the-art packaging it can happen that the lid comes off and literally finds itself pushed through the opening of the container. This embodiment allows, by the attachment of said at least lug, better resistance to depression. In such a case, at least one lug 47 and at least one folding skirt section can be provided on each corner of the packaging.

According to the embodiment illustrated in Figure 9 , the folding skirt section 44 carries said at least one lug 47, as well as the edge 41 directed inwards, both positioned under the folding zone 46, in the engagement position P1 of the folding skirt section 44: the edge 41 directed inwards is therefore sectioned when the folding skirt section 44 is raised, from its engagement position P1. Alternatively and as taught by the document EP2523866 , the edge 41 directed inwards can be located above the folding zone 46, so that the lifting of the folding skirt section does not sever the edge 41 directed inwards, preserving the properties sealing the lid with the first opening.

According to an illustrated embodiment, the container has four side walls meeting at four corners, the edge 41 directed towards the inside of the cover having four sections of curved angle iron 43 with four sections of folding skirt 44, each carrying at least one lug 47 of the folding skirt section, capable of hanging with the second edge 30 directed towards the outside of the container. At least four lugs 47 ensure reliable attachment of the lid to the four corners of the container, which further increases the attachment connection between the lid and the container.

We first notice the figure 2 that the attachment can possibly be reinforced, always at the corners, with the presence of two lugs 47 on each section of folding skirt 44; at the curved angle sections. Doubling the lugs 47 by corners can be a general measure according to this embodiment.

Advantages and disadvantages of the first embodiment

The folding skirt section(s) 44 are protected from accidental openings, each by a receiving portion 7, the housing 70 of which holds the free end of the folding skirt section captive, and for example over the entire curved length of the free end El.

It is only possible to fold each section of folding skirt 44 from its engagement position P1 (prohibiting removal of the cover) towards the position directed outwards (facilitating removal of the cover) after deformation of the portion reception 70, and in particular deformation of the front wall 71 in the retracted position PE where said front wall no longer constitutes a stop opposing the folding of the folding skirt section to the position directed outwards.

Advantageously, any accidental folding of the skirt section 44 is eliminated, or at least drastically limited, and thus the rupture of the grooves 45 between the folding skirt section and the skirt 42, with the function of an opening indicator: these grooves 45 cannot be accidentally broken.

The presence of lugs 47, at least according to one embodiment, in particular in the four sections of curved angle irons 43, first of all considerably increases the reliability of the opening indicators, forcing the user to break the grooves 45 to disengage the lugs 27 of the second edge 30

The present disclosure further makes it possible to improve the resistance to stacking of the packaging, and more particularly the holding of the lid of the lowest packaging in the stack: under the effect of the weight of the column, when the sections of skirt are provided with lugs 47.

Other improvements

Also notably, we note that the peripheral wall 49 of the cover immediately extending the second engagement part 40 can include along the edges of the cover on the lateral sections between the sections of curved angles 43 where the edge 41 directed towards the inside of the cover hooks the edge 28 directed towards the outside of the container, counter-support ribs 50, projecting, vertical, positioned under the cover, oriented towards the outside.

These counter-support ribs 50 are notable in that they advantageously form a plurality of counter-supports Ap on the internal faces of the side walls 20, 21, 22, 23 of the container, distributed over the periphery of the container on the side sections edges 28, 41 between the curved angle sections 43. These counter-supports Ap advantageously reinforce the attachment between the edges 28, 41 along the edges of the cover on the lateral sections of the edges 28,41 between the curved angle sections 43.

When stacking a package resting on the lid of an identical package, this is advantageously obtained in particular thanks to the combined presence of lugs 47, on the folding skirt sections 44, at the level of the corners, on the one hand, and of the counter-support ribs 50, along the edges between the corners, on the other hand, good maintenance of the hooking of the lid on the container, without detaching the ribs 28, 41 over the entire periphery of the lid, this is i.e. not only at the corners, but more so along the edges between the corners

As visible at figure 5 the second engagement part 40 forms a groove G open downwards, receiving the first engagement part 27. The second engagement part 40 comprises an inverted U-shaped section, including a first length section, extending the upper wall of the cover immediately including the peripheral wall 49 extended by a central horizontal wall of the cover followed by a second length section, inclined relative to the first section, for example horizontal, followed by a third section of length, inclined relative to the second section and extending downwards forming a skirt 42, this third section carrying the edge 41 directed towards the inside.

The peripheral wall 49 extends the second engagement part 40 by connecting the second engagement part to the horizontal wall of the cover. As visible at Figure 5 , this peripheral wall 49 can be inclined relative to the horizontal, central wall of the cover, for example by an angle α for example between 30° and 70° in particular between 45° and 70°. This wall 49 descends, from the second engagement part 40 towards the horizontal wall. This peripheral wall 49 delimits with the side walls 20; 21; 22; 23, when the lid is fixed to the container (by hooking the ribs 28, 41) a groove G, opening onto the underside of the lid 4 and which runs on the inner periphery of the container. We also note that the counter-support ribs 50 extend inside this groove G, coming into counter-support Ap on the internal face of the side wall 20;21;22;23. These supports effectively prevent the peripheral wall 49 from coming together under the load during stacking. We thus advantageously avoid such a deformation which tends to open the U-shaped section of the second engagement part 40, favoring the separation of the edges 28, 41 along the edges. Advantageously, better maintenance of the attachment between the edges 28 and 41 is obtained along the edges of the packaging between the corners.

The density of the ribs 50 for counter-support along the edge of the cover 4 can be, on the middle part of the lateral section between two sections of curved angles 43, greater than the linear density of the ribs 50 for counter-support on the end parts of the lateral section near the curved angle sections 43, on either side of the middle part

Each counter-support rib 50 can be triangular in shape, adjoining the peripheral wall 49 by the largest side 51 of the so-called first triangle. side, while a second side 52 of the triangle, substantially horizontal, is oriented in the extension of the horizontal wall of the cover and in particular its underside, the third side 53 forming a support zone on the internal face of the container. We also note that the third side 52 has a section of greater length, forming the counter-support Ap on the internal face of a side wall of the container, and a section of lower length, notched, so as not to press on the side wall. The angle formed between the second side 52 and the third side 53 is advantageously rounded. This avoids the presence of a sharp angle likely to alter the contents, or even to pierce a flexible bag used to package materials inside the container.

As visible at Figure 6 , the cover 4 may also include wedging ribs 54, extending projecting over the periphery of the cover, inwards with respect to the second engagement part 40 and upwards with respect to the horizontal wall of the cover . The wedging ribs 54 are distributed over the inner periphery of the second engagement part 40, so as to receive between them by centering it the lower part of a container of identical packaging superimposed on the horizontal wall of the cover. Said wedging ribs constitute stops with the lower part of the side walls of the superimposed container, ensuring its centering on the cover.

The counter-support ribs 50 may be, at least in part, ribs located, relative to the peripheral wall 49, in the extension of the wedging ribs 54; said counter-support ribs 50 and said wedging ribs 54 being coplanar, in pairs.

Each wedging rib 54 extends in height from the horizontal wall of the cover and up to above the lower part of the second engagement part 40, and inwards, from the second engagement part 40 up to 'to the horizontal wall, partially covering the horizontal wall of the cover. As visible at Figure 6 each wedging rib 54 adjoins the rest of the cover at the level of a first edge 55 along the horizontal wall, at the level of a second edge 56 along the inclined peripheral wall 49, and over part of the height of the second part of engagement along of a third edge 57. In combination with the counter-support ribs 50, these wedging ribs 54 can help limit the transmission of forces under the load towards the second engagement part.

According to one embodiment, the first engagement part 27 of the container extends below the edge 28 directed towards the outside and the second engagement part 40 extends below the edge 41 directed towards the outside. inside, by first clipping means 6 and second mutually engaging clipping means 8; at an intermediate local area along the edges of the container on the side sections between the curved angle sections.

The first clipping means and the second clipping means cooperate only in the intermediate zone and reinforce the connection between the edges 28,41. The first clipping means 6 may comprise at least one opening 60, for example two openings, and the second clipping means comprise an elastically deformable tooth 80, configured to be inserted elastically into said opening by hooking it. The openings and teeth can each be doubled as shown.

These means 6, 8 make it possible to reinforce the hold of the lid and its attachment to the container via the edges 28, 41, in particular when the latter takes up a significant load, such as the load of a package resting on the lid. The resistance of the lid to the load is increased, in particular when the packages are stacked on top of each other.

On two opposite sides of the side walls, the shoulder carrying the openings 80 of the first engagement portion of the container is extended downwards by a wing 9f forming a handle Pg, projecting laterally from the side wall of the container. These two handles, Pg projecting laterally from two of the side walls of the container, allow the packaging to be lifted.

It should also be noted that the container may have external ribs N extending under the first engagement portion 27. These external ribs N each thus extend vertically below the first engagement portion 27 of the container ( carrying the edge 21 directed outwards). Helmet external rib N has at its lower end a flat intended to cooperate in abutment with the upper edge of the upper opening of the container inside which the container is stacked: Such vertical external ribs N have the primary function of guaranteeing a no constant stacking between two containers when the latter are stacked one inside the other as described in the application FR 1854484 of the Applicant

These ribs N can be provided in the corners, and extend vertically below each receiving portion 7, at least up to the height of the receiving portion 7. Two ribs N can be provided below each receiving portion . These ribs N can also be provided connecting wing 9 forming the handle Pg and the side wall 20 or 33 juxtaposed

As visible in the figures, vertical ribs can advantageously be provided between the receiving portion 7 and the corner wall to the right of the zones Z devoid of a back wall: these can in particular be ribs N with a stacking pitch function, alone, or in combination with additional ribs NS, in particular of smaller vertical dimensions, and as visible figures 12 And 13 .

The position of these ribs in particular of the ribs N (alone or in combination with the additional ribs NS) makes it possible to obstruct, in the inter-space between the receiving portion 7 and the corner wall, the fraudulent unhooking of the lugs 47 of the second edge 30 (namely without requiring the folding of the skirt section 44, and the breaking of the grooves 45, serving as an opening indicator). The reliability of the opening indicator is further increased.

Naturally other embodiments of the invention could have been envisaged without departing from the scope of the invention as defined by the claims below.

List of reference signs

• 1. Packaging,
• 2. Container,
• 20, 21, 22, 23. Side walls,
• 24. Corners,
• 25. Top opening,
• 26. Background,
• 27. First portion of commitment,
• 28. First edge directed outwards,
• 29. Curved angle section (edge 28),
• 4. Lid,
• 40. Second portion of commitment,
• 41. Edge directed inwards,
• 42. Skirt,
• 43. Curved angle section (edge 41),
• 44. Foldable skirt section,
• 45. Breakable grooves,
• 46. Folding area (e.g. soft hinge),
• 47. Ergot
• 48. Through recess
• 49 Peripheral wall as an extension of the second engagement part 40
• 50 Counter-support ribs,
• 51. Long side of the triangle forming the counter-support rib,
• 52. Second side of the triangle as an extension of the horizontal wall of the cover,
• 53. Third side of the triangle constituting a counter-support zone,
• 54. Wedging ribs
• 55 First edge (Rib 54)
• 56 Second edge (Rib 54
• 57 Third edge (Rib 54)
• 6, 8. First clipping means and second clipping means,
• 60. Opening,
• 80. Teeth
• 7. Receiving portion,
• 70. Housing,
• 71. Front wall,
• 72. Groove (front wall),
• 73. Dorsal wall
• 74. Back wall,
• 75. Bridge of matter,
• 9. wing
• El. Free end (foldable skirt section)
• G. Throat
• P1 Engagement position
• EP. Retracted position
• Rac1. Rac2 Hanging covers
• J. Clearance separating said lug and the second edge when no force is applied to the cover,
• Pg. Handle
• N. Exterior ribs with stacking pitch function
• NS. Additional ribs
• Z. Areas without dorsal wall

Claims (16)

1. A packaging (1) comprising, on the one hand, a plastic container (2) having lateral walls (20, 21, 22, 23) meeting at corners (24), a top opening (25) and a bottom (26), and on the other hand, a removable plastic lid (4) that is configured to cover the top opening in the container, and wherein the container (2) is provided, at its top opening (25), with a first engagement portion (27) bearing a first outward-directed rim (28) that extends around the periphery, the lid (4) being provided, on its peripheral part, with a second engagement portion (40) that is folded downward and has an inward-directed rim (41) which is able to latch underneath the first outward-directed rim (28) of the container, and wherein the second engagement portion of the lid has a skirt (42) extending over the lower part of the second engagement portion, and wherein the first outward-directed rim (28) of the container, on the one hand, and the inward-directed rim (41) of the lid (4), on the other hand, having curved corner sections (29, 43) in the corners where said lateral walls meet, said curved corner sections connecting the lateral sections of the respective rims, where at least one of the curved corner sections (43) of the inward-directed rim (41) is provided with a foldable skirt section (44), articulated in a folding area (46) at the upper part of the second engagement portion (40) which is able to be folded from an engagement position (P1) to an outward-directed position in such a way that a central part of said at least one corner section of the inward-directed rim (41) is separated by a levering effect of the first outward-directed rim (28) of the top opening, and that the engagement between the first outward-directed rim (28) and the inward-directed rim (41) of the lid (4) is thus weakened over the central part, and wherein said foldable skirt section (44) is separated from the remaining skirt section by means of two grooves (45) formed in the external surface of the skirt and extending downward from a folding area to the lower edge of the skirt, said grooves (45) reducing the wall thickness of the skirt such that the skirt can be broken along the grooves in order to fold the foldable skirt section, from the engagement position (P1) thereof, into the outward-directed position thereof
   characterized in that the container comprises, at the foldable skirt section (44) of the lid (4), a reception portion (7) forming a shield for the free end (EI) of the foldable skirt section (44), with a receptacle (70) receiving said free end in the engagement position (P1) of the foldable skirt section (44), said reception portion (7) being configured to prevent the folding of said foldable skirt section (44) to said outward-directed position, and wherein said reception portion (7) is configured to be deformed in order to release the free end (EI) and authorize the pivoting of the foldable skirt section (44) from the engagement position (P1) to said outward-directed position and wherein the receptacle comprises a front wall (71), extending to overlap, in front of the free end of the foldable skirt section (44) in the engagement position (P1) of the foldable skirt section (44), said front wall (71) then constituting an abutment preventing the folding of said foldable skirt section (44) to said outward-directed position, and wherein said front wall (71) is configured to be deformed by an operator to a retracted position (PE) enabling the free end to be released and authorizing the pivoting of the foldable skirt section (44) around the folding area (46) from the engagement position (P1) to the outward-directed position, and wherein the free end (EI) of the foldable skirt section (44) has a curved profile, along a plane parallel to the lid, and wherein the receptacle (70) of the reception portion (7) has, in length, a curved trajectory receiving the curved profile of the free end (44) and wherein the front wall (71) comprises longitudinal ends and is secured at its longitudinal ends by material bridges (75) in the form of vertical ribs connecting respectively the longitudinal ends of the front wall (71) and the lateral walls or corner of the container, and wherein a groove (72) reducing the thickness of the front wall (71) is provided at one of the longitudinal ends of the front wall (71), configured in such a way as to break by dissociating the longitudinal end of the material bridge when the front wall (71) is deformed to the retracted position (PE).
2. The packaging according to Claim 1, wherein the front wall (71) deformed after breakage of the groove (72) to the retracted position (PE) and authorizing the folding of the skirt section (44) to the outward-directed position, is still adjoining the container (2) via the other longitudinal end.
3. The packaging according to one of Claims 1 to 2, wherein the engagement portion (27) of the container bearing the first outward-directed rim (28) extends and is elongated below the rim, and is terminated below the first rim (28), by a second rim (30), also outward-directed, and wherein the receptacle (70) receiving the free end of the foldable section comprises a rear wall (73) the upper end whereof is integral with said second rim (30), the back (73) being integral with the front wall (71) via a bottom wall (74) connecting the lower end of the rear wall (73) and the lower end of the front wall (71) the section comprising the front wall (71), the rear wall (73) and the bottom wall (74) forming a U-shaped section of the receptacle (70) receiving the free end of the foldable skirt section (44).
4. The packaging according to Claim 3, wherein the foldable skirt section (42) bears at least one inward-directed lug (47), which, in the engagement position (P1) of the foldable skirt section (44), is able to latch beneath the second outward-directed rim (30) of the first engagement portion, at least when a force is applied on the lid tending to detach it,
   and wherein the latching of said at least one lug (47) on the second rim (30) is produced, in the engagement position (P1) of the foldable skirt section (44) in a local area only along the curved corner section of the second outward-directed rim (30), and with a latching overlap (Rac2) between the mutually engaging faces of said at least one lug (47) and of the second rim (30), when viewed in a direction radial to the curved section of the second rim (30), of larger dimension than the latching overlap (Rac1) between the mutually engaging faces of the inward-directed rim (41) and of the first outward-directed rim (28), when viewed along a direction radial to the curved section of the first rim (28).
5. The packaging according to Claim 4, wherein the latching of said at least one lug (47) beneath the second rim is produced in a local area (Z) with no rear wall.
6. The packaging according to one of Claims 4 to 5, wherein the foldable skirt section (44) of the lid (4) has a through-recess (48) extending along the height of the foldable skirt section (44), above and perpendicular to said at least one lug (47).
7. The packaging according to Claim 6, wherein said through-recess (48) extends from the lower part thereof from said at least one lug (47) and up to the folding area (46) between the foldable skirt section (44) and the upper part of the second engagement portion (40), and only over the length of the lug (47).
8. The packaging according to one of Claims 4 to 7, wherein in the engagement position (P1) of the foldable skirt section, and when no exterior force is applied to the lid, the latch between the inward-directed rim (41) and the first outward-directed rim (28) is free, while a clearance (J) separates the second outward-directed rim (30) and said at least one lug (47) positioned below the second rim, said lug (47) coming into latching contact with the second rim (30) only when the lid (4) is subjected to a force.
9. The packaging according to one of Claims 1 to 8, the container of which comprises four lateral walls meeting at four corners, the inward-directed rim (41) of the lid having four curved corner sections (43) with four foldable skirt sections (44), and four reception portions (7) receiving respectively the free ends of the four foldable skirt sections.
10. The packaging according to one of Claims 1 to 9, wherein the foldable skirt section (44) bears said at least one lug (47), as well as the inward-directed rim (41), both positioned under the folding area (46), in the engagement position (P1) of the foldable skirt section (44).
11. The packaging according to one of Claims 1 to 10, wherein the first engagement portion (27) of the container is extended below the first outward-directed rim (28) by first snap-on means (6) and the second engagement portion (40) is extended below the inward-directed rim (41), by second snap-on means (8), the first snap-on means (6) and said second snap-on means (8) being mutually engaging in the intermediate local area along edges of the container on the lateral sections between the curved corner sections where the inward-directed rim (41) of the lid latches the first outward-directed rim (28) of the container.
12. The packaging according to Claim 11, wherein the first snap-on means comprise at least one opening (60), and the second snap-on means comprise an elastically deformable tooth (80) configured to be elastically inserted into said opening (60) by latching it.
13. The packaging according to one of Claims 1 to 12, wherein the peripheral wall (49) of the lid immediately extending the second engagement portion (40) comprises, along the edges of the lid, on the lateral sections between the curved corner sections (43) where the inward-directed rim (41) of the lid latches the first outward-directed rim (28) of the container, countersupport ribs (50), projecting, vertical, positioned under the lid, oriented outwardly, forming between the curved corner sections (43) a plurality of counter-supports (Ap) on the inner faces of the lateral walls (20, 21, 22, 23) of the container, distributed around the periphery of the container, reinforcing the latching between the rims (18, 41) latched along the edges of the lid between the curved corner sections (43).
14. The packaging according to one of claims 1 to 13 comprising wedging ribs (54), extending in projection around the periphery of the lid, toward the interior relative to the second engagement portion (40) and upward relative to the horizontal wall of the lid, said wedging ribs (54) being distributed around the inner periphery of the second engagement portion (40), in such a way as to receive among them the lower part of a container, while centering it, of an identical packaging stacked on the horizontal wall of the lid, said wedging ribs constituting abutments with the lower part of the lateral walls of the stacked container.
15. The packaging according to one of Claims 1 to 14 having outer ribs (N) each extending vertically below the first engagement portion (27), each rib (N) having at its lower end a flat place intended to cooperate in abutment with the upper edge of the top opening of the container inside which the container is stacked, the outer ribs (N) being provided at least partially in the corners (24), extending vertically below each reception portion (7) at least up to the height of the reception portion (7).
16. A method for manufacturing a packaging according to one of claims 1 to 15, wherein said lid and said container are obtained by injection molding.

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