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EP2138407A1 - Container, in particular a bottle, with at least one flute with variable depth - Google Patents

Container, in particular a bottle, with at least one flute with variable depth Download PDF

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Publication number
EP2138407A1
EP2138407A1 EP09162605A EP09162605A EP2138407A1 EP 2138407 A1 EP2138407 A1 EP 2138407A1 EP 09162605 A EP09162605 A EP 09162605A EP 09162605 A EP09162605 A EP 09162605A EP 2138407 A1 EP2138407 A1 EP 2138407A1
Authority
EP
European Patent Office
Prior art keywords
groove
container
depth
faces
longitudinal axis
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.)
Withdrawn
Application number
EP09162605A
Other languages
German (de)
French (fr)
Inventor
Michel Boukobza
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.)
Sidel Participations SAS
Original Assignee
Sidel Participations SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sidel Participations SAS filed Critical Sidel Participations SAS
Publication of EP2138407A1 publication Critical patent/EP2138407A1/en
Withdrawn legal-status Critical Current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
    • B65D1/00—Rigid or semi-rigid containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material or by deep-drawing operations performed on sheet material
    • B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
    • B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
    • 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
    • B65D79/00—Kinds or details of packages, not otherwise provided for
    • B65D79/005—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting
    • B65D79/008—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting the deformable part being located in a rigid or semi-rigid container, e.g. in bottles or jars
    • B65D79/0084—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting the deformable part being located in a rigid or semi-rigid container, e.g. in bottles or jars in the sidewall or shoulder part thereof

Definitions

  • the present invention generally relates to the field of containers, in particular bottles, made of thermoplastic material such as PET (polyethylene terephthalate), and more specifically relates to improvements made to those containers having a body, oriented along an axis. longitudinal section with a wall surrounding the axis defining at least two faces separated from each other by at least two connecting zones, the body being provided with at least one groove extending in part on both sides of said body and on at least one of the two connection areas.
  • PET polyethylene terephthalate
  • Containers of the specified kind have, when filled, a high rigidity which prevents them from being able to withstand external or internal forces, even if relatively limited. This is the case for example when too many containers are stacked on top of each other (typically bundles of bottles stacked on pallets), which can cause a fold of the wall of plastic material. Even if there is no rupture of the wall and therefore no leakage of liquid, so that the contents of the container can be used, the customer almost systematically rejects containers thus damaged, so they are no longer marketable.
  • the container can withstand this depression without deformation, it must have sufficient mechanical rigidity, which means for example that it has thick walls; in other words, such a container requires an increased amount of raw material and is therefore more expensive, which is not accepted by producers of packaged liquids.
  • the keeping in shape of a container in its initial form is all the more difficult when the container comprises a body, oriented along a longitudinal axis with a wall surrounding said axis defining at least two separate faces one of the other by at least two connecting areas (that is, the container has a plurality of faces delimited relative to each other by angular areas defining corners, truly marked or rounded).
  • the container comprises a body, oriented along a longitudinal axis with a wall surrounding said axis defining at least two separate faces one of the other by at least two connecting areas (that is, the container has a plurality of faces delimited relative to each other by angular areas defining corners, simply marked or rounded).
  • a container of form general square that could deform into a diamond shape.
  • FIG. figure 1 An embodiment of a container 1 with such a transverse groove according to the prior art is illustrated in FIG. figure 1 , the container 1 having a body 2, oriented along a longitudinal axis X, limited at the bottom by a bottom 3 and at the top by a portion comprising a shoulder 4A surmounted by a neck 4B.
  • a circumferentially closed peripheral groove 5 extending in a plane substantially transverse to the longitudinal axis X of the body 2 is formed in the body 2.
  • FIG. 2 to 4 represent different possible embodiments of the groove 5 in an upper view of the container 1 cut transversely at the central plane AA of the groove 5, as shown in FIG. figure 1 , the plane AA passing through the bottom of the groove 5.
  • the body 2 of generally square shape, has four faces 6 separated from each other by a connecting zone 7 forming an angular sector 10 with beveled end.
  • the depth P1 separating the outer wall 9 of the body 2 and the bottom 8 of the groove 5 is measured on a straight line transverse to the longitudinal axis X and substantially crossing the middle of the face 6 of the body 2 and the depth P2 separating the outer wall 9 of the body 2 and the bottom 8 of the groove 5 on a line transverse to the longitudinal axis X and substantially through the middle of the connecting zone 7.
  • the depth P1 is identical to the depth P2.
  • this embodiment does not allow to retain the initial shape of the connection zone 7 as well in the event of shocks in case of hot filling of the container 1.
  • connection zone 7 it would be advantageous to keep the initial shape of this connection zone 7 to keep the possibility of later use of the container.
  • the present invention relates to a container having the features of claim 1.
  • such a container retracts for example 15 ml when filling a liquid at 85 ° C and for example 18 ml when filling the same liquid at 92 ° C.
  • such a container is adapted to adapt to the constraints of the liquid manufacturing process; said stresses sometimes requiring filling of the container with a liquid having different temperatures.
  • FIG 3 illustrates a perspective view of an embodiment of a container 1 according to the invention, in particular bottle, made of thermoplastic material such as PET, comprising a body 2, oriented along a longitudinal axis X, limited at bottom by a bottom 3 and at the top by a shoulder 4A surmounted by a collar 4B.
  • a container 1 in particular bottle, made of thermoplastic material such as PET, comprising a body 2, oriented along a longitudinal axis X, limited at bottom by a bottom 3 and at the top by a shoulder 4A surmounted by a collar 4B.
  • the body 2 has a wall 9 surrounding the axis X defining at least two faces 6 separated from each other by at least two connecting zones 7, the body 2 being provided with at least one groove 5 extending partly on at least two faces 6 of the body 2 and at least one of the two connecting zones 7.
  • the groove 5 extends substantially in a plane transverse to the X axis of the body with a variable depth between a first depth P1 at the two faces 6 of the body and a second depth P2 at the zone 7 of connection, the ratio P1 / P2 of the two depths being between a zero value (in this case the first depth P1 is zero) and a value less than or equal to 0.5.
  • the value of P1 is zero in the embodiment illustrated on the figures 3 and 4 .
  • the groove 5, of peripheral extent closed on itself is interrupted at least punctually in areas 6A of the faces 6 of the container 1.
  • the groove 5 comprises in this case four groove segments. Each groove segment extends over an angular range ⁇ between 40 ° and 80 °. Each angular range ⁇ is delimited by two straight lines A and B belonging to a plane transverse to the longitudinal axis X. The lines A and B each pass through the longitudinal axis X and by a point Y belonging both to the tangent to the curve delimiting the bottom 8 in the transverse plane illustrated in FIG. figure 4 , and at the tangent to the curve delimiting the zone 6A in this same plane.
  • the value of the depth P1 of the groove 5 is very small at the faces 6 of the body 2 and is located in a ratio according to which P1 / P2 ⁇ 1/2.
  • the depth 8 of the groove 5 varies with a substantially constant growth rate between the minimum depth value P1 and the maximum depth value P2.
  • the first derivative of the ratio P2 / P1 is substantially constant and different from 1.
  • the grooves 5 define a zone 6A of variable deformation of the container 1.
  • such a container 1 accepts a deformation zone 6A which varies for example according to pressure applied against the walls 9 of the container.
  • a deformation zone 6A which varies for example according to pressure applied against the walls 9 of the container.
  • the pressure applied against the wall 9 is not important, only the zone 6A deforms.
  • the zone 6A and a part of the groove segments 5 deform.
  • the figure 6 is a perspective view of a container 1 comprising two first splines 5A, two second splines 5B, and two third splines 5C formed in six different planes, all transverse to the axis X of the container 1.
  • the first two grooves 5A extend between the neck 4B and the bottom 3, one near the neck 4B and the other near the bottom 3.
  • the two second splines 5B extend between the first two grooves 5A.
  • the second splines 5B have an angular range ⁇ "smaller than the angular range ⁇ 'of the first splines 5A.
  • the two third splines 5C extend between the two second splines 5B.
  • the third splines 5C have an angular range ⁇ "lower than the angular range ⁇ " of the second splines 5B.
  • the face 6 of the container 1 illustrated on the figure 7 further comprises an additional groove 20 of oblong shape whose outer edge is in contact with the ends of the first flutes 5A, the second splines 5B and third splines 5C.
  • the additional groove 20 has substantially a diamond shape. This additional groove 20 forms a closed loop on the face 6 which extends along the longitudinal axis X and delimits a central deformation zone 21 of the container.
  • the angular ranges ⁇ ', ⁇ ", ⁇ "' of the first splines 5A, the second splines 5B and the third splines 5C are identical and the additional spline 20 has a substantially rectangular shape.
  • the body 2 of the container 1 has four faces 6 forming generally, in cross-section along the X axis, a substantially square or rectangular section.
  • connection zone 7 forms an angular zone with rounded or even slightly rounded end.
  • connection zone 7 may also have a tapered angular zone (as for the embodiments illustrated in FIGS. Figures 2 to 4 ).
  • the connecting zone 7 may be in the form of an angular sector with a pointed vertex (in this case, the second depth P2 of the groove at this connection zone 7 is measured as the distance between the bottom of the groove 5 and the top of this angular sector).
  • the container 1 according to the invention therefore has at least one groove 5 with a continuously variable depth between a minimum value P1 at the faces 6 of the body 2 and a maximum value P2 at the zone 7 of connection.
  • the figure 8 represents a cross-sectional view of an alternative embodiment of a spline 5 according to the invention wherein the depth P1 has the same value for the faces 6 of the container 1 which are two by two opposite, the container 1 having a body 2 of generally square shape.
  • the first depth P1 may have different values for the same groove 5, namely a value adapted for each face 6 of the body 2 of the container 1.
  • the preferred embodiment of the invention certainly applies to a container 1 of square or rectangular shape, but that the general principle of the invention applies to any type of container having zones 7 of connection between two adjacent faces 6 and for which it is desired to maintain the shape of this connection zone 7.
  • the general provisions of the invention also apply to a container having an oval cross-sectional view, the container 1 having in this case strictly two faces 6 and two connecting zones 7.
  • the figure 9 is a partial view in axial section of a groove 5 according to the invention with a substantially flat bottom 13
  • the figure 10 is a partial view in axial section of a groove 5 according to the invention with a substantially rounded bottom 13
  • the figure 11 is a partial view in axial section of a groove 5 according to the invention with a bottom 13 with corrugations.
  • grooves extending certainly substantially peripheral, but which are not closed on themselves may extend only on two adjacent faces 6 of a container, on either side of a connecting zone 7 connecting them.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)

Abstract

Récipient (1), notamment bouteille, en matière thermoplastique telle que du PET, comportant un corps (2), orienté selon un axe longitudinal (X) avec une paroi (9) entourant ledit axe (X) définissant au moins deux faces (6) séparées l'une de l'autre par au moins deux zones (7) de raccordement, ledit corps (2) étant pourvu d'au moins une cannelure (5) s'étendant en partie sur lesdites au moins deux faces (6) dudit corps (2) et au moins une des deux zones (7) de raccordement, caractérisé en ce que ladite au moins une cannelure (5) s'étend sensiblement dans un plan transversal audit axe (X) dudit corps (2) avec une profondeur variable entre une première profondeur (P1) au niveau desdites deux faces (6) du corps (2) et une seconde profondeur P2 au niveau de ladite zone (7) de raccordement, le rapport P1/P2 des deux profondeurs étant compris entre une valeur nulle et une valeur inférieure ou égale à 0,5.Container (1), in particular a bottle, of thermoplastic material such as PET, comprising a body (2) oriented along a longitudinal axis (X) with a wall (9) surrounding said axis (X) defining at least two faces (6) ) separated from each other by at least two connecting regions (7), said body (2) being provided with at least one groove (5) extending in part on said at least two faces (6) said body (2) and at least one of the two zones (7) of connection, characterized in that said at least one groove (5) extends substantially in a plane transverse to said axis (X) of said body (2) with a variable depth between a first depth (P1) at said two faces (6) of the body (2) and a second depth P2 at said connecting zone (7), the ratio P1 / P2 of the two depths lying between a null value and a value less than or equal to 0.5.

Description

La présente invention concerne d'une manière générale le domaine des récipients, notamment des bouteilles, en matière thermoplastique telle que du PET (polyéthylène téréphtalate), et concerne plus spécifiquement des perfectionnements apportés à ceux de ces récipients comportant un corps, orienté selon un axe longitudinal avec une paroi entourant l'axe définissant au moins deux faces séparées l'une de l'autre par au moins deux zones de raccordement, le corps étant pourvu d'au moins une cannelure s'étendant en partie sur les deux faces dudit corps et sur au moins une des deux zones de raccordement.The present invention generally relates to the field of containers, in particular bottles, made of thermoplastic material such as PET (polyethylene terephthalate), and more specifically relates to improvements made to those containers having a body, oriented along an axis. longitudinal section with a wall surrounding the axis defining at least two faces separated from each other by at least two connecting zones, the body being provided with at least one groove extending in part on both sides of said body and on at least one of the two connection areas.

Les récipients du genre spécifié présentent, lorsqu'ils sont remplis, une grande rigidité qui s'oppose à ce qu'ils puissent alors supporter sans dommage des efforts externes ou internes, même relativement limités. C'est ainsi le cas par exemple lorsque de trop nombreux récipients sont empilés les uns sur les autres (typiquement des paquets de bouteilles empilés sur des palettes), ce qui peut provoquer une pliure de la paroi en matériau plastique. Même s'il n'en résulte aucune rupture de la paroi et donc aucune fuite de liquide, de sorte que le contenu du récipient peut être utilisé, la clientèle rejette pratiquement systématiquement des récipients ainsi endommagés qui ne sont donc plus commercialisables.Containers of the specified kind have, when filled, a high rigidity which prevents them from being able to withstand external or internal forces, even if relatively limited. This is the case for example when too many containers are stacked on top of each other (typically bundles of bottles stacked on pallets), which can cause a fold of the wall of plastic material. Even if there is no rupture of the wall and therefore no leakage of liquid, so that the contents of the container can be used, the customer almost systematically rejects containers thus damaged, so they are no longer marketable.

Par ailleurs et surtout, lorsqu'un récipient du type considéré est rempli avec un liquide chaud puis fermé, l'air qui reste emprisonné dans le récipient, en se refroidissant, réduit légèrement de volume. C'est typiquement le cas des récipients qui sont remplis dans des installations de remplissage à grande cadence, dans lesquelles les récipients sont fermés bien avant que le liquide, versé chaud, se soit refroidi jusqu'à la température ambiante. Il en résulte que le retrait de volume de l'air en cours de refroidissement place le volume intérieur du récipient en condition de dépression.Moreover and above all, when a container of the type in question is filled with a hot liquid and then closed, the air which remains trapped in the container, while cooling, reduces slightly of volume. This is typically the case of containers that are filled in with high-speed filling plants in which the containers are closed well before the hot poured liquid has cooled to room temperature. As a result, the volume shrinkage of the air during cooling places the interior volume of the container under a vacuum condition.

Pour que le récipient puisse supporter cette dépression sans déformation, il faut qu'il présente une rigidité mécanique suffisante, ce qui signifie par exemple qu'il possède des parois épaisses ; autrement dit, un tel récipient exige une quantité accrue de matière première et est donc plus coûteux, ce qui n'est pas accepté par les producteurs de liquides conditionnés.So that the container can withstand this depression without deformation, it must have sufficient mechanical rigidity, which means for example that it has thick walls; in other words, such a container requires an increased amount of raw material and is therefore more expensive, which is not accepted by producers of packaged liquids.

Certes, il est connu de fabriquer des récipients dont le corps est spécialement configuré (corps à panneaux) pour pouvoir supporter cette dépression sans déformation apparente. Toutefois, ces récipients de formes spéciales sont sensiblement plus coûteux que des récipients traditionnels. Par contre, si le récipient est insuffisamment résistant, il se déforme de façon non contrôlée et, là encore, sa mauvaise apparence le rend difficilement commercialisable.Admittedly, it is known to manufacture containers whose body is specially configured (panel body) to be able to withstand this depression without apparent deformation. However, these specially shaped containers are substantially more expensive than traditional containers. By cons, if the container is insufficiently resistant, it deforms uncontrollably and, again, its poor appearance makes it difficult to market.

Par ailleurs, le maintien en forme d'un récipient dans sa forme initiale est d'autant plus difficile quand le récipient comprend un corps, orienté selon un axe longitudinal avec une paroi entourant ledit axe définissant au moins deux faces séparées l'une de l'autre par au moins deux zones de raccordement (autrement dit, le récipient présente plusieurs faces délimitées les unes par rapport aux autres par des zones angulaires définissant des coins, franchement marqués ou arrondis). A titre d'exemple, on pourrait citer un récipient de forme générale carrée qui risquerait de se déformer en une forme en losange.Moreover, the keeping in shape of a container in its initial form is all the more difficult when the container comprises a body, oriented along a longitudinal axis with a wall surrounding said axis defining at least two separate faces one of the other by at least two connecting areas (that is, the container has a plurality of faces delimited relative to each other by angular areas defining corners, frankly marked or rounded). By way of example, one could mention a container of form general square that could deform into a diamond shape.

Pour remédier à ce problème, il a été proposé de réaliser au moins une cannelure s'étendant en partie sur les faces du corps et sur les zones de raccordement.To remedy this problem, it has been proposed to provide at least one groove extending partly on the faces of the body and on the connection areas.

Une forme de réalisation d'un récipient 1 avec une telle cannelure transversale selon l'art antérieur est illustrée à la figure 1, le récipient 1 comportant un corps 2, orienté selon un axe X longitudinal, limité en bas par un fond 3 et en haut par une partie comprenant une épaule 4A surmontée par un col 4B.An embodiment of a container 1 with such a transverse groove according to the prior art is illustrated in FIG. figure 1 , the container 1 having a body 2, oriented along a longitudinal axis X, limited at the bottom by a bottom 3 and at the top by a portion comprising a shoulder 4A surmounted by a neck 4B.

Une cannelure 5 d'étendue périphérique fermée sur elle-même et s'étendant dans un plan sensiblement transversal à l'axe X longitudinal du corps 2 est formée dans le corps 2.A circumferentially closed peripheral groove 5 extending in a plane substantially transverse to the longitudinal axis X of the body 2 is formed in the body 2.

Les figures 2 à 4 représentent différentes formes de réalisation possibles de la cannelure 5 selon une vue supérieure du récipient 1 coupé transversalement au niveau du plan A-A central de la cannelure 5, tel qu'illustré sur la figure 1, le plan A-A passant par le fond de la cannelure 5.The Figures 2 to 4 represent different possible embodiments of the groove 5 in an upper view of the container 1 cut transversely at the central plane AA of the groove 5, as shown in FIG. figure 1 , the plane AA passing through the bottom of the groove 5.

Selon une première forme de réalisation de la cannelure 5 illustrée sur la figure 2, on remarquera que le corps 2, de forme générale carrée, présente quatre faces 6 séparées l'une de l'autre par une zone 7 de raccordement formant un secteur 10 angulaire à extrémité biseautée. Ainsi, selon une vue en coupe transversale du corps 2 du récipient 1, on mesure la profondeur P1 séparant la paroi 9 extérieure du corps 2 et le fond 8 de la cannelure 5 sur une droite transversale à l'axe X longitudinal et traversant sensiblement le milieu de la face 6 du corps 2 ainsi que la profondeur P2 séparant la paroi 9 extérieure du corps 2 et le fond 8 de la cannelure 5 sur une droite transversale à l'axe X longitudinal et traversant sensiblement le milieu de la zone 7 de raccordement. Il faut alors noter que, selon le mode de réalisation illustré à la figure 2, la profondeur P1 est identique à la profondeur P2.According to a first embodiment of the groove 5 illustrated on the figure 2 it will be noted that the body 2, of generally square shape, has four faces 6 separated from each other by a connecting zone 7 forming an angular sector 10 with beveled end. Thus, according to a cross-sectional view of the body 2 of the container 1, the depth P1 separating the outer wall 9 of the body 2 and the bottom 8 of the groove 5 is measured on a straight line transverse to the longitudinal axis X and substantially crossing the middle of the face 6 of the body 2 and the depth P2 separating the outer wall 9 of the body 2 and the bottom 8 of the groove 5 on a line transverse to the longitudinal axis X and substantially through the middle of the connecting zone 7. It should be noted that, according to the embodiment illustrated in FIG. figure 2 , the depth P1 is identical to the depth P2.

Toutefois, il a pu être constaté que cette forme de réalisation ne permet pas de conserver la forme initiale de la zone 7 de raccordement aussi bien en cas de chocs qu'en cas de remplissage à chaud du récipient 1.However, it has been found that this embodiment does not allow to retain the initial shape of the connection zone 7 as well in the event of shocks in case of hot filling of the container 1.

Or, il serait avantageux de conserver la forme initiale de cette zone 7 de raccordement pour garder la possibilité d'utilisation ultérieure du récipient.However, it would be advantageous to keep the initial shape of this connection zone 7 to keep the possibility of later use of the container.

De plus, il serait particulièrement intéressant de réaliser un récipient dans lequel la plage de déformation du récipient peut varier.In addition, it would be particularly interesting to make a container in which the deformation range of the container can vary.

A cet effet, la présente invention porte sur un récipient présentant les caractéristiques de la revendication 1.For this purpose, the present invention relates to a container having the features of claim 1.

Avantageusement, un tel récipient se rétracte par exemple de 15 ml lors d'un remplissage d'un liquide à 85°C et par exemple de 18 ml lors d'un remplissage de ce même liquide à 92°C.Advantageously, such a container retracts for example 15 ml when filling a liquid at 85 ° C and for example 18 ml when filling the same liquid at 92 ° C.

Avantageusement, un tel récipient est propre à s'adapter aux contraintes du procédé de fabrication du liquide ; lesdites contraintes nécessitant parfois un remplissage du récipient avec un liquide présentant des températures différentes.Advantageously, such a container is adapted to adapt to the constraints of the liquid manufacturing process; said stresses sometimes requiring filling of the container with a liquid having different temperatures.

La présente invention est maintenant décrite à l'aide d'exemples uniquement illustratifs et nullement limitatifs de la portée de l'invention, et à partir des dessins ci-joints, dans lesquels :

  • la figure 1 représente une vue schématique d'un récipient selon l'art antérieur ;
  • la figure 2 est une vue de dessus d'une première forme de réalisation d'une cannelure d'un récipient selon l'art antérieur coupé transversalement au niveau de celle-ci ;
  • la figure 3 est une vue en perspective d'une première forme de réalisation d'un récipient selon l'invention ;
  • la figure 4 est une vue de dessus d'une forme de réalisation d'une cannelure d'un récipient selon l'invention coupé transversalement au niveau de celle-ci ;
  • la figure 5 est une vue de dessus d'une autre forme de réalisation d'une cannelure d'un récipient selon l'invention coupé transversalement au niveau de celle-ci ;
  • la figure 6 est une vue en perspective d'une forme de réalisation alternative d'un récipient dont le corps présente plusieurs cannelures selon l'invention ;
  • la figure 7 est une vue en perspective d'une forme de réalisation alternative d'un récipient dont le corps présente une cannelure supplémentaire de forme oblongue ;
  • la figure 8 est une vue supérieure d'une forme de réalisation alternative d'une cannelure d'un récipient selon l'invention coupé transversalement au niveau de celle-ci, et
  • les figures 9 à 11 représentent différentes vues en coupe axiale de plusieurs formes de réalisation du fond de la cannelure selon l'invention.
The present invention is now described with the aid of purely illustrative and in no way limiting examples of the scope of the invention, and from the attached drawings, in which:
  • the figure 1 is a schematic view of a container according to the prior art;
  • the figure 2 is a top view of a first embodiment of a groove of a container according to the prior art cut transversely at the level thereof;
  • the figure 3 is a perspective view of a first embodiment of a container according to the invention;
  • the figure 4 is a top view of an embodiment of a groove of a container according to the invention cut transversely at the level thereof;
  • the figure 5 is a top view of another embodiment of a groove of a container according to the invention cut transversely at the level thereof;
  • the figure 6 is a perspective view of an alternative embodiment of a container whose body has a plurality of grooves according to the invention;
  • the figure 7 is a perspective view of an alternative embodiment of a container whose body has an additional oblong-shaped groove;
  • the figure 8 is a top view of an alternative embodiment of a groove of a container according to the invention cut transversely therealong, and
  • the Figures 9 to 11 represent different views in axial section of several embodiments of the bottom of the groove according to the invention.

La figure 3 illustre une vue en perspective d'une forme de réalisation d'un récipient 1 selon l'invention, notamment bouteille, en matière thermoplastique telle que du PET, comportant un corps 2, orienté selon un axe X longitudinal, limité en bas par un fond 3 et en haut par une épaule 4A surmontée par un col 4B.The figure 3 illustrates a perspective view of an embodiment of a container 1 according to the invention, in particular bottle, made of thermoplastic material such as PET, comprising a body 2, oriented along a longitudinal axis X, limited at bottom by a bottom 3 and at the top by a shoulder 4A surmounted by a collar 4B.

Le corps 2 présente une paroi 9 entourant l'axe X définissant au moins deux faces 6 séparées l'une de l'autre par au moins deux zones 7 de raccordement, le corps 2 étant pourvu d'au moins une cannelure 5 s'étendant en partie sur au moins deux faces 6 du corps 2 et au moins une des deux zones 7 de raccordement.The body 2 has a wall 9 surrounding the axis X defining at least two faces 6 separated from each other by at least two connecting zones 7, the body 2 being provided with at least one groove 5 extending partly on at least two faces 6 of the body 2 and at least one of the two connecting zones 7.

Comme cela apparait plus clairement sur les figures 4 et 5, qui représentent deux vues en coupe transversale de deux formes de réalisation possibles d'une cannelure 5 selon l'invention, la cannelure 5 s'étend sensiblement dans un plan transversal à l'axe X du corps avec une profondeur variable entre une première profondeur P1 au niveau des deux faces 6 du corps et une seconde profondeur P2 au niveau de la zone 7 de raccordement, le rapport P1/P2 des deux profondeurs étant compris entre une valeur nulle (dans ce cas la première profondeur P1 est nulle) et une valeur inférieure ou égale à 0,5.As it appears more clearly on the Figures 4 and 5 , which represent two cross-sectional views of two possible embodiments of a groove 5 according to the invention, the groove 5 extends substantially in a plane transverse to the X axis of the body with a variable depth between a first depth P1 at the two faces 6 of the body and a second depth P2 at the zone 7 of connection, the ratio P1 / P2 of the two depths being between a zero value (in this case the first depth P1 is zero) and a value less than or equal to 0.5.

Plus précisément, la valeur de P1 est nulle dans le mode de réalisation illustré sur les figures 3 et 4. Dans ce cas, la cannelure 5, d'étendue périphérique fermée sur elle-même, est interrompue au moins ponctuellement dans des zones 6A des faces 6 du récipient 1.More precisely, the value of P1 is zero in the embodiment illustrated on the figures 3 and 4 . In this case, the groove 5, of peripheral extent closed on itself, is interrupted at least punctually in areas 6A of the faces 6 of the container 1.

La cannelure 5 comprend dans ce cas quatre segments de cannelure. Chaque segment de cannelure s'étend sur une plage angulaire α comprise entre 40° et 80°. Chaque plage angulaire α est délimitée par deux droites A et B appartenant à un plan transversal à l'axe X longitudinal. Les droites A et B passent chacune par l'axe X longitudinal et par un point Y appartenant à la fois à la tangente à la courbe délimitant le fond 8 dans le plan transversal illustré sur la figure 4, et à la tangente à la courbe délimitant la zone 6A dans ce même plan.The groove 5 comprises in this case four groove segments. Each groove segment extends over an angular range α between 40 ° and 80 °. Each angular range α is delimited by two straight lines A and B belonging to a plane transverse to the longitudinal axis X. The lines A and B each pass through the longitudinal axis X and by a point Y belonging both to the tangent to the curve delimiting the bottom 8 in the transverse plane illustrated in FIG. figure 4 , and at the tangent to the curve delimiting the zone 6A in this same plane.

Sur la figure 4, uniquement deux plages angulaires α ont été représentées pour simplifier la figure.On the figure 4 only two angular ranges α have been shown to simplify the figure.

Dans le mode de réalisation illustré sur la figure 5, la valeur de la profondeur P1 de la cannelure 5 est très faible au niveau des faces 6 du corps 2 et est située dans un rapport selon lequel P1/P2 < 1/2.In the embodiment illustrated on the figure 5 , the value of the depth P1 of the groove 5 is very small at the faces 6 of the body 2 and is located in a ratio according to which P1 / P2 <1/2.

Ainsi, de par le rapport de proportion de ces profondeurs P1 et P2, il est réalisé un renforcement des zones 7 de raccordement, ce grâce à quoi celles-ci ne se déforment pas aussi bien en cas de chocs que suite à un remplissage à chaud du contenant dans le récipient 1. Par ailleurs, comme cela a été indiqué au moment de la description de formes de réalisation de cannelures selon l'art antérieur, il est mesuré la profondeur P1 séparant la paroi 9 extérieure du corps 2 et le fond 8 de la cannelure 5 sur une droite transversale à l'axe X longitudinal et traversant sensiblement le milieu de la face 6 du corps 2 ainsi que la profondeur P2 séparant la paroi 9 extérieure du corps 2 et le fond 8 de la cannelure 5 sur une droite transversale à l'axe X longitudinal et traversant sensiblement le milieu de la zone 7 de raccordement.Thus, by the ratio of proportion of these depths P1 and P2, it is achieved a strengthening of the connection areas 7, thanks to which they do not deform as well in case of shocks than following a hot filling In addition, as indicated at the time of the description of embodiments of splines according to the prior art, it is measured the depth P1 between the outer wall 9 of the body 2 and the bottom 8 of the groove 5 on a line transverse to the longitudinal axis X and substantially through the middle of the face 6 of the body 2 and the depth P2 separating the outer wall 9 of the body 2 and the bottom 8 of the groove 5 on a straight line transverse to the longitudinal axis X and substantially through the middle of the connecting zone 7.

Dans les modes de réalisation des figures 4 et 5, la profondeur 8 de la cannelure 5 varie avec un taux de croissance sensiblement constant entre la valeur de profondeur minimale P1 et la valeur de profondeur maximale P2.In the embodiments of Figures 4 and 5 , the depth 8 of the groove 5 varies with a substantially constant growth rate between the minimum depth value P1 and the maximum depth value P2.

La dérivée première du rapport P2/P1 est sensiblement constante et différente de 1. Ainsi, les cannelures 5 définissent une zone 6A de déformation variable du récipient 1.The first derivative of the ratio P2 / P1 is substantially constant and different from 1. Thus, the grooves 5 define a zone 6A of variable deformation of the container 1.

Avantageusement, un tel récipient 1 accepte une zone 6A de déformation qui varie par exemple en fonction de la pression appliquée contre les parois 9 du récipient. Ainsi, lorsque la pression appliquée contre la paroi 9 n'est pas importante, seule la zone 6A se déforme. En revanche, lorsqu'une pression plus importante est appliquée contre la paroi 9, la zone 6A ainsi qu'une partie des segments de cannelure 5 se déforment. En particulier, les parties des segments de cannelure qui présentent une faible profondeur se déforment.Advantageously, such a container 1 accepts a deformation zone 6A which varies for example according to pressure applied against the walls 9 of the container. Thus, when the pressure applied against the wall 9 is not important, only the zone 6A deforms. On the other hand, when a greater pressure is applied against the wall 9, the zone 6A and a part of the groove segments 5 deform. In particular, the portions of the groove segments which have a shallow depth deform.

La figure 6 représente une vue en perspective d'un récipient 1 comprenant deux premières cannelures 5A, deux deuxièmes cannelures 5B, et deux troisième cannelures 5C formées dans six plans différents, tous transversaux à l'axe X du récipient 1.The figure 6 is a perspective view of a container 1 comprising two first splines 5A, two second splines 5B, and two third splines 5C formed in six different planes, all transverse to the axis X of the container 1.

Les deux premières cannelures 5A s'étendent entre le col 4B et le fond 3, l'une à proximité du col 4B et l'autre à proximité du fond 3.The first two grooves 5A extend between the neck 4B and the bottom 3, one near the neck 4B and the other near the bottom 3.

Les deux deuxièmes cannelures 5B s'étendent entre les deux premières cannelures 5A. Les deuxièmes cannelures 5B présentent une plage angulaire α" inférieure à la plage angulaire α' des premières cannelures 5A.The two second splines 5B extend between the first two grooves 5A. The second splines 5B have an angular range α "smaller than the angular range α 'of the first splines 5A.

Enfin, les deux troisièmes cannelures 5C s'étendent entre les deux deuxièmes cannelures 5B. Les troisièmes cannelures 5C présentent une plage angulaire α"' inférieure à la plage angulaire α" des deuxièmes cannelures 5B.Finally, the two third splines 5C extend between the two second splines 5B. The third splines 5C have an angular range α "lower than the angular range α" of the second splines 5B.

Le mode de réalisation de l'invention illustré sur la figure 7 est similaire au mode de réalisation illustré sur la figure 6. Les éléments identiques de ces modes de réalisation ne seront pas décrits à nouveau.The embodiment of the invention illustrated on the figure 7 is similar to the embodiment illustrated on the figure 6 . Identical elements of these embodiments will not be described again.

La face 6 du récipient 1 illustré sur la figure 7 comporte en outre une cannelure supplémentaire 20 de forme oblongue dont le bord extérieur est au contact des extrémités des premières cannelures 5A, des deuxièmes cannelures 5B et des troisièmes cannelures 5C. En particulier, la cannelure supplémentaire 20 présente sensiblement une forme de losange. Cette cannelure supplémentaire 20 forme une boucle fermée sur la face 6 qui s'étend le long de l'axe X longitudinal et délimite une zone de déformation centrale 21 du récipient.The face 6 of the container 1 illustrated on the figure 7 further comprises an additional groove 20 of oblong shape whose outer edge is in contact with the ends of the first flutes 5A, the second splines 5B and third splines 5C. In particular, the additional groove 20 has substantially a diamond shape. This additional groove 20 forms a closed loop on the face 6 which extends along the longitudinal axis X and delimits a central deformation zone 21 of the container.

En variante, les plages angulaires α', α",α"' des premières cannelures 5A, des deuxièmes cannelures 5B et des troisièmes cannelures 5C sont identiques et la cannelure supplémentaire 20 présente une forme sensiblement rectangulaire.Alternatively, the angular ranges α ', α ", α"' of the first splines 5A, the second splines 5B and the third splines 5C are identical and the additional spline 20 has a substantially rectangular shape.

Préférentiellement, le corps 2 du récipient 1 présente quatre faces 6 formant de manière générale, selon une coupe transversale à l'axe X, une section sensiblement carrée ou rectangulaire.Preferably, the body 2 of the container 1 has four faces 6 forming generally, in cross-section along the X axis, a substantially square or rectangular section.

Avantageusement, la zone 7 de raccordement forme une zone angulaire à extrémité arrondie, voire légèrement arrondie. Toutefois, la zone 7 de raccordement peut également présenter une zone angulaire à extrémité biseautée (comme pour les modes de réalisation illustrés sur les figures 2 à 4). De même, la zone 7 de raccordement peut se présenter sous la forme d'un secteur anguleux avec un sommet pointu (dans ce cas, la seconde profondeur P2 de la cannelure au niveau de cette zone 7 de raccordement est mesurée comme étant la distance entre le fond de la cannelure 5 et le sommet de ce secteur anguleux).Advantageously, the connection zone 7 forms an angular zone with rounded or even slightly rounded end. However, the connection zone 7 may also have a tapered angular zone (as for the embodiments illustrated in FIGS. Figures 2 to 4 ). Similarly, the connecting zone 7 may be in the form of an angular sector with a pointed vertex (in this case, the second depth P2 of the groove at this connection zone 7 is measured as the distance between the bottom of the groove 5 and the top of this angular sector).

Le récipient 1 selon l'invention présente donc au moins une cannelure 5 avec une profondeur continuellement variable entre une valeur P1 minimale au niveau des faces 6 du corps 2 et une valeur P2 maximale au niveau de la zone 7 de raccordement.The container 1 according to the invention therefore has at least one groove 5 with a continuously variable depth between a minimum value P1 at the faces 6 of the body 2 and a maximum value P2 at the zone 7 of connection.

La figure 8 représente une vue en coupe transversale d'une forme de réalisation alternative d'une cannelure 5 selon l'invention dans laquelle la profondeur P1 présente une même valeur pour les faces 6 du récipient 1 qui sont deux à deux opposées, le récipient 1 présentant un corps 2 de forme générale carrée. Ainsi, selon ce mode de réalisation, la première profondeur P1 peut présenter des valeurs différentes pour une même cannelure 5, à savoir une valeur adaptée pour chaque face 6 du corps 2 du récipient 1.The figure 8 represents a cross-sectional view of an alternative embodiment of a spline 5 according to the invention wherein the depth P1 has the same value for the faces 6 of the container 1 which are two by two opposite, the container 1 having a body 2 of generally square shape. Thus, according to this embodiment, the first depth P1 may have different values for the same groove 5, namely a value adapted for each face 6 of the body 2 of the container 1.

Il est bien entendu que le mode de réalisation préférentiel de l'invention s'applique certes pour un récipient 1 de forme carrée ou rectangulaire, mais que le principe général de l'invention s'applique à tout type de récipient présentant des zones 7 de raccordement entre deux faces 6 adjacentes et pour lequel il est souhaité de conserver la forme de cette zone 7 de raccordement. Ainsi, les dispositions générales de l'invention s'appliquent également pour un récipient présentant une vue en coupe transversale ovale, le récipient 1 présentant dans ce cas strictement deux faces 6 et deux zones 7 de raccordement.It is understood that the preferred embodiment of the invention certainly applies to a container 1 of square or rectangular shape, but that the general principle of the invention applies to any type of container having zones 7 of connection between two adjacent faces 6 and for which it is desired to maintain the shape of this connection zone 7. Thus, the general provisions of the invention also apply to a container having an oval cross-sectional view, the container 1 having in this case strictly two faces 6 and two connecting zones 7.

Par ailleurs, il convient de noter que les dispositions générales de l'invention s'appliquent quelle que soit la forme du fond 13 de la cannelure 5. Ainsi, la figure 9 représente une vue partielle en coupe axiale d'une cannelure 5 selon l'invention avec un fond 13 sensiblement plat, la figure 10 représente une vue partielle en coupe axiale d'une cannelure 5 selon l'invention avec un fond 13 sensiblement arrondi, tandis que la figure 11 représente une vue partielle en coupe axiale d'une cannelure 5 selon l'invention avec un fond 13 à ondulations.Furthermore, it should be noted that the general provisions of the invention apply regardless of the shape of the bottom 13 of the groove 5. Thus, the figure 9 is a partial view in axial section of a groove 5 according to the invention with a substantially flat bottom 13, the figure 10 is a partial view in axial section of a groove 5 according to the invention with a substantially rounded bottom 13, while the figure 11 is a partial view in axial section of a groove 5 according to the invention with a bottom 13 with corrugations.

Il est bien entendu que les dispositions générales de l'invention s'appliquent pour des cannelures s'étendant certes de manière sensiblement périphérique, mais qui ne sont pas fermées sur elles-mêmes. Dans ce cas, les cannelures 5 peuvent s'étendre uniquement sur deux faces 6 adjacentes d'un récipient, de part et d'autre d'une zone 7 de raccordement les reliant.It is understood that the general provisions of the invention apply for grooves extending certainly substantially peripheral, but which are not closed on themselves. In this case, the grooves 5 may extend only on two adjacent faces 6 of a container, on either side of a connecting zone 7 connecting them.

Claims (12)

Récipient (1), notamment bouteille, en matière thermoplastique telle que du PET, comportant un corps (2), orienté selon un axe longitudinal (X) avec une paroi (9) entourant ledit axe (X) définissant au moins deux faces(6) séparées l'une de l'autre par au moins deux zones (7) de raccordement, ledit corps (2) étant pourvu d'au moins une cannelure (5, 5A, 5B, 5C) s'étendant en partie sur lesdites au moins deux faces (6) dudit corps (2) et au moins une des deux zones (7) de raccordement, ladite au moins une cannelure (5, 5A, 5B, 5C) s'étendant sensiblement dans un plan transversal audit axe (X) dudit corps (2) sur une plage angulaire (α, α', α", α"') prédéfinie, ladite cannelure (5, 5A, 5B, 5C) ayant une profondeur variable entre une première profondeur (P1) au niveau desdites deux faces (6) du corps (2) et une seconde profondeur (P2) au niveau de ladite zone (7) de raccordement, le rapport P1/P2 des deux profondeurs étant compris entre une valeur nulle et une valeur maximale, ladite valeur maximale étant inférieure ou égale à 0,5, caractérisé en ce que ladite cannelure (5, 5A, 5B, 5C) présente une profondeur (P2) qui varie selon un taux de croissance sensiblement constant entre la valeur nulle au niveau des faces (6) du corps (2) et la valeur maximale au niveau de la zone (7) de raccordement.Container (1), in particular a bottle, of thermoplastic material such as PET, comprising a body (2) oriented along a longitudinal axis (X) with a wall (9) surrounding said axis (X) defining at least two faces (6) ) separated from each other by at least two connecting regions (7), said body (2) being provided with at least one groove (5, 5A, 5B, 5C) extending partly over said at least two faces (6) of said body (2) and at least one of the two connecting zones (7), said at least one groove (5, 5A, 5B, 5C) extending substantially in a plane transverse to said axis (X ) of said body (2) over an angular range (α, α ', α ", α"') predefined, said groove (5, 5A, 5B, 5C) having a variable depth between a first depth (P1) at said two faces (6) of the body (2) and a second depth (P2) at said connecting zone (7), the ratio P1 / P2 of the two depths being between a zero value and a maximum value ale, said maximum value being less than or equal to 0.5, characterized in that said groove (5, 5A, 5B, 5C) has a depth (P2) which varies according to a substantially constant growth rate between the zero value at the level of faces (6) of the body (2) and the maximum value at the connection zone (7). Récipient (1) selon la revendication 1, caractérisé en ce que la dérivée première du rapport P1/P2 est sensiblement constante et différente de 1.Container (1) according to claim 1, characterized in that the first derivative of the ratio P1 / P2 is substantially constant and different from 1. Récipient (1) selon l'une quelconque des revendications 1 et 2, caractérisé en ce qu'il comprend : - au moins une première cannelure (5A) s'étendant sensiblement dans un premier plan transversal audit axe (X) longitudinal, ladite première cannelure (5A) étant disposée entre le col (4B) et le fond (3) du récipient(1), et - au moins une deuxième (5B) cannelure (B) s'étendant sensiblement dans un deuxième plan transversal audit axe (X) longitudinal, ladite deuxième cannelure (5B) étant disposée entre la première cannelure (5A) et le fond(3) du récipient ; la première cannelure (5A) s'étendant sur une plage angulaire (α') supérieure à la plage angulaire (α") de la deuxième cannelure (5B).Container (1) according to any one of claims 1 and 2, characterized in that it comprises: at least one first spline (5A) extending substantially in a first plane transverse to said longitudinal axis (X), said first spline (5A) being disposed between the neck (4B) and the bottom (3) of the container (1) , and at least one second (5B) groove (B) extending substantially in a second plane transverse to said longitudinal axis (X), said second groove (5B) being disposed between the first groove (5A) and the bottom (3) of the container; the first groove (5A) extending over an angular range (α ') greater than the angular range (α ") of the second groove (5B). Récipient (1) selon la revendication 3, caractérisé en ce qu'il comprend au moins une troisième cannelure (5C) s'étendant sensiblement dans un troisième plan transversal audit axe (X) longitudinal, ladite troisième cannelure (5C) étant disposée entre la deuxième cannelure (5B) et le fond (3) du récipient (1) ; la troisième cannelure (5C) s'étendant sur une plage angulaire (α") supérieure à la plage angulaire (α"') de la deuxième cannelure (5B).Container (1) according to claim 3, characterized in that it comprises at least one third groove (5C) extending substantially in a third plane transverse to said longitudinal axis (X), said third groove (5C) being disposed between the second groove (5B) and the bottom (3) of the container (1); the third groove (5C) extending over an angular range (α ") greater than the angular range (α"') of the second groove (5B). Récipient (1) selon l'une quelconque des revendications 3 et 4 caractérisé en ce que les plages angulaires (α' α' α", α"') sont comprises entre 40° et 80°.Container (1) according to any one of claims 3 and 4 characterized in that the angular ranges (α 'α' α ", α"') are between 40 ° and 80 °. Récipient (1) selon l'une quelconque des revendications 1 à 5, caractérisé en ce que au moins une face (6) comporte au moins une cannelure supplémentaire (20) propre à délimiter une zone fermée (21) de déformation du récipient (1) ; ladite cannelure supplémentaire (20) ayant une forme sensiblement oblongue d'axe longitudinal sensiblement parallèlement à l'axe (X) longitudinal dudit corps (2).Container (1) according to any one of claims 1 to 5, characterized in that at least one face (6) comprises at least one additional groove (20) adapted to delimit a closed zone (21) of deformation of the container (1); said further groove (20) having a substantially oblong shape with a longitudinal axis substantially parallel to the longitudinal axis (X) of said body (2). Récipient (1) selon les revendications 3 et 6 prises en combinaison, dans lequel la cannelure supplémentaire (20) est adjacente aux extrémités d'au moins la première cannelure (5A) et la deuxième cannelure (5B).Container (1) according to claims 3 and 6 taken in combination, wherein the additional groove (20) is adjacent the ends of at least the first groove (5A) and the second groove (5B). Récipient selon l'une quelconque des revendications 1 à 7, caractérisé en ce que ladite zone (7) de raccordement forme une zone angulaire à extrémité arrondie.Container according to any one of claims 1 to 7, characterized in that said connecting zone (7) forms an angular zone with a rounded end. Récipient selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la première profondeur (P1) est nulle.Container according to any one of claims 1 to 6, characterized in that the first depth (P1) is zero. Récipient selon l'une quelconque des revendications 1 à 9, caractérisé en ce que ladite au moins une cannelure (5) présente un fond (13) sensiblement plat.Container according to any one of claims 1 to 9, characterized in that said at least one groove (5) has a bottom (13) substantially flat. Récipient selon l'une quelconque des revendications 1 à 9, caractérisé en ce que ladite au moins une cannelure (5) présente un fond (13) sensiblement arrondi.Container according to any one of claims 1 to 9, characterized in that said at least one groove (5) has a bottom (13) substantially rounded. Récipient selon l'une quelconque des revendications 1 à 9, caractérisé en ce que ladite au moins une cannelure (5) présente un fond (13) à ondulations.Container according to any one of claims 1 to 9, characterized in that said at least one groove (5) has a bottom (13) with corrugations.
EP09162605A 2008-06-16 2009-06-12 Container, in particular a bottle, with at least one flute with variable depth Withdrawn EP2138407A1 (en)

Applications Claiming Priority (1)

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FR0853957A FR2932459B1 (en) 2008-06-16 2008-06-16 CONTAINER, IN PARTICULAR BOTTLE, WITH AT LEAST ONE VARIABLE DEPTH ROD

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EP2138407A1 true EP2138407A1 (en) 2009-12-30

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EP (1) EP2138407A1 (en)
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CN101618771A (en) 2010-01-06
CN101618771B (en) 2013-02-13
US8276775B2 (en) 2012-10-02
MX2009006482A (en) 2010-01-15
FR2932459B1 (en) 2012-12-14
JP2009298485A (en) 2009-12-24
US20100012618A1 (en) 2010-01-21

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