EP1912874A1 - Container, in particular bottle, made of thermoplastic material - Google Patents

Container, in particular bottle, made of thermoplastic material

Info

Publication number
EP1912874A1
EP1912874A1 EP06778676A EP06778676A EP1912874A1 EP 1912874 A1 EP1912874 A1 EP 1912874A1 EP 06778676 A EP06778676 A EP 06778676A EP 06778676 A EP06778676 A EP 06778676A EP 1912874 A1 EP1912874 A1 EP 1912874A1
Authority
EP
European Patent Office
Prior art keywords
deformable
container
groove
container according
faces
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP06778676A
Other languages
German (de)
French (fr)
Other versions
EP1912874B1 (en
Inventor
Michel c/o Sidel Participations 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 EP1912874A1 publication Critical patent/EP1912874A1/en
Application granted granted Critical
Publication of EP1912874B1 publication Critical patent/EP1912874B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D1/00—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, 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
    • 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
    • B65D2501/00—Containers having bodies formed in one piece
    • B65D2501/0009—Bottles or similar containers with necks or like restricted apertures designed for pouring contents
    • B65D2501/0018—Ribs
    • B65D2501/0036—Hollow circonferential ribs

Definitions

  • the present invention relates generally to the field of containers, especially bottles, made of thermoplastic material such as PET, and more specifically relates to improvements made to those containers which comprise a body provided with at least one groove. of peripheral extent closed on itself.
  • 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.
  • an external force axially on the neck of a container of this type can cause a fold of the wall of plastic material at the shoulder of the container, under the neck;
  • the neck returns partially in the shoulder, generally on one side of the container, so that the neck is then strongly inclined relative to the axis of the container.
  • 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.
  • Admittedly it is known to manufacture containers whose body is specially configured (panel body) to be able to withstand this depression without apparent deformation.
  • these containers of special shapes are substantially more expensive, too, than traditional containers. By cons, if the container is insufficiently resistant, it deforms uncontrollably and, again, its poor appearance makes it difficult to market.
  • the purpose of the invention is precisely to meet these expectations and to propose an improved container which can withstand efforts, whether for example external forces applied in particular on the neck or especially internal forces due to depression of the container, especially after filling with a hot liquid.
  • the invention provides a container, in particular a bottle, made of thermoplastic material such as PET, comprising a body provided with at least one groove of peripheral extent closed on itself and extending in a plane substantially perpendicular to the axis of the body, which container, being arranged according to the invention, is characterized in that the groove has a depth of between about 3 and 6 mm and in that, in cross section, the groove comprises: - a substantially rounded bottom with a relatively small radius of curvature of between 0.2 and 1.5 mm, two substantially flat faces spaced apart on either side of said bottom forming between them an angle of between about 50 ° and 90 ° and two curvilinear faces, in particular in an arc of a circle, which, on one side, deviate from the respective planar faces at an angle substantially less than 180 ° and are connected thereto by a rounding of relatively small radius of camber ure not exceeding 1.5 mm and which, on the other side, are connected substantially tangentially to the body wall.
  • the groove is a groove which is axially elastically deformable and which has an axial gripping capacity in the presence of an axial force applied to the container, in particular under the effect of a volume shrinkage during cooling a hot poured liquid in the container and / or under the action of a force applied approximately axially on the container (case of stacked containers for example).
  • the groove has a uniform shape over the entire periphery of the container body, its nip occurs identically over its entire extent so that the body of the container deforms remaining coaxial with itself and without curvature of its external generators.
  • the container retains a generally identical shape, without curvature, and its deformation
  • the depth of the deformable groove is about 4 mm.
  • the bottom of the deformable groove has a radius of curvature of about 0.5 mm.
  • the flat faces of the deformable groove form between them an angle of about 60 ° to 80 °, preferably about 70 °.
  • the rounding between the flat faces and the substantially curvilinear faces has a radius of curvature of between about 0.8 and 1.2 mm, preferably about 1 mm.
  • the implementation of the provisions of the invention can give rise to various configurations of the container body.
  • the container may comprise a plurality of deformable grooves spaced apart axially from each other, the number of these grooves being determined as a function of the extent of the axial deformation provided, which, in the case more particularly considered a filling with a hot liquid, is dependent on the temperature of the filling liquid and / or the dimensions of the container body, in particular its transverse dimensions.
  • provision may be made for two or three splines in the case of filling with a liquid at a relatively low temperature (for example of the order of 80 ° C.), while it may be three to five in the case of filling with a liquid at a very high temperature (for example of the order of 90 ° C.).
  • the deflectable splines are arranged one after the other or alternatively, that between at least some deformable grooves is interposed at least one non-deformable groove; in particular, it can be provided in this case that the deformable grooves alternate with non-deformable grooves.
  • the body of the container is equipped with a small number of deformable grooves at any location (bottom, top, middle), the remainder of the body remaining free of any groove (eg for marking or affixing of label).
  • An application more particularly targeted by the provisions according to the invention, without this being exclusive, relates to a container of the bottle type arranged as indicated above and which has a substantially cylindrical section body.
  • the container equipped in accordance with the invention has a significant capacity for axial deformation without substantially affecting its general shape.
  • a bottle of 0.5 1 able to present, following a filling with a liquid at high temperature (for example 90-92 0 C), a volume reduction of the order of 15 ml, resulting in a reduction in height of the order of 4 mm, a settlement of the body of about 3.15%.
  • FIGS. 1 to 3 are side views of respectively three bottle-type containers equipped with at least one groove according to the invention;
  • FIG. 4 is a diagrammatic view of the cross-section of a groove according to the invention provided on the containers of FIGS. 1 to 3, and
  • FIGS. 5A and 5B are side views respectively of two other bottle-type containers equipped with at least one groove according to the invention.
  • a container 1 here in the form of a bottle, of thermoplastic material such as PET.
  • the container 1 comprises a body 2, here shown with a substantially cylindrical general shape, which is connected superiorly to a neck 3 by a rounded portion or shoulder 4 and which is connected internally to a bottom of the container or seat 5.
  • the body 2 is provided with at least one groove 6 of peripheral extent closed on itself and extending in a plane substantially perpendicular to the axis 7 of the body 2.
  • the groove 6 is illustrated on a much larger scale.
  • the groove 6 has a depth p of between about 3 and 6 mm.
  • the groove 6 comprises:
  • the bottom 8 of the groove 6 thus arranged constitutes a hinge thanks to which the two flat faces 9 can pivot relative to each other, the assembly forming a variable opening clamp according to the load applied to the one and / or to the other of these planar faces 9.
  • the rounded 11 of small radius of curvature form articulations by means of which the curvilinear faces 10 can accompany the displacements of the planar faces 9.
  • a groove arranged in such a manner has a large capacity for controlled deformation. In Figure 4, there is shown in broken lines the contour of the groove 6 deformed.
  • the groove 6 has a depth of about 4 mm, its bottom 8 has a radius of curvature R1 of about 0.5 mm, its two substantially planar faces 9 form between them an angle ce of the order of 70 °, the two curvilinear faces 10 arc in a circle, and the rounded 11 has a radius of curvature R2 of about 1 mm.
  • the groove according to the invention can give rise to many implementation variants, depending on the rate of deformation desired for the container. Some of these possible variants are illustrated by way of example in FIGS. 1 to 3.
  • a groove according to the invention can certainly be implemented, alone, in a container for which a low rate of axial deformation is desired.
  • the container 1 in the form of a bottle is equipped exclusively with deformable splines 6 arranged as described above, or in this specific example eight deformable grooves 6 distributed over approximately the entire height of the body 2 of a bottle of 0.5 1.
  • deformable splines 6 arranged as described above, or in this specific example eight deformable grooves 6 distributed over approximately the entire height of the body 2 of a bottle of 0.5 1.
  • two consecutive flutes of this container are separated by an interval of about 12.7 mm and for the two lower flutes it has been measured that the displacement of one groove per ratio to the other assumed fixed was about 0.4 mm, a displacement of about 3.15%.
  • the deformable grooves 6 are grouped in the lower part of the body 2 of the container 1 in the form of a bottle, while the upper part of the container is arranged in any desired manner; in the example illustrated, the body 2 is, in its upper part, equipped with standard grooves 13 not substantially deformable.
  • the body 2 of the container 1 in the form of a bottle is equipped, over substantially its entire height, an alternation of grooves 6 according to the invention and substantially non-deformable standard grooves 13. Alternatively, one could provide alternating pairs of flutes of each type. It should be emphasized that whatever the distribution of the deformable splines, the presence of standard, non-deformable grooves in the rest of the body of the container is not imperative; in addition, when localized, the deformable splines may be arranged in any desired location (bottom, top, middle) of the container body, the remainder of the body being shaped in any suitable manner (eg smooth, polygonal shape, ...), in particular for purposes of marking or affixing a label. By way of example, in FIG.
  • the body 2 of a container in the form of a bottle is equipped with two deformable grooves 6 according to the invention which are located one after the other in the part upper body, the rest of the body being devoid of grooves and smooth.
  • the body 2 of a container in the form of a bottle is provided with three deformable grooves 6 according to the invention which are located one after the other in the lower part of the body, the rest of the body being devoid of grooves and smooth.
  • the number of deformable grooves 6 can be two or three; on the other hand, when the liquid is at a relatively high temperature, for example of the order of 90-92 ° C., the number of 6 deformable grooves must be higher, of the order of three to five.

Abstract

A thermoplastic container (1) having a body (2) provided with at least one groove (6) that forms a closed loop and that extends perpendicularly to the axis of the body; the groove having a depth (p) that lies in the range 3 mm to 6 mm; in right section, the groove comprises: an bottom (8) that is rounded, having a small radius of curvature (R1) in the range 0.2 mm to 1.5 mm; two faces (9) that are plane and that flare apart from each other on either side of the bottom (8) at an angle (α) in the range 50° to 90°; and two faces (10) that are curvilinear, and that extend away from the respective plane faces (9) at an angle (β) that is less than 180°, and that are connected thereto by respective rounded walls (11) of small radius of curvature (R2) that does not exceed 1.5 mm, and that are connected tangentially to the wall (12) of the body (2). Such a groove (6) is deformable with a capacity to pinch axially in the presence of an axial force applied to the container.

Description

RECIPIENT, NOTAMMENT BOUTEILLE, EN MATIERE THERMOPLASTIQUE CONTAINER, IN PARTICULAR BOTTLE, THERMOPLASTIC MATERIAL
La présente invention concerne d'une façon générale le domaine des récipients, notamment des bouteilles, en matière thermoplastique tel que du PET, et elle concerne plus spécifiquement des perfectionnements apportés à ceux de ces récipients qui comportent un corps pourvu d'au moins une cannelure d'étendue périphérique fermée sur elle-même.The present invention relates generally to the field of containers, especially bottles, made of thermoplastic material such as PET, and more specifically relates to improvements made to those containers which comprise a body provided with at least one groove. of peripheral extent closed on itself.
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 que l'application d'un effort externe axialement sur le col d'un récipient de ce type (cas par exemple lorsque de trop nombreux récipients sont empilés les uns sur les autres - typiquement des paquets de bouteilles empilés sur des palettes -) peut provoquer une pliure de la paroi en matériau plastique au niveau de l'épaule du récipient, sous le col ; il en résulte que le col rentre partiellement dans l'épaule, en général d'un côté du récipient, de sorte que le col est alors fortement incliné par rapport à l'axe du récipient. Souvent, il n'en résulte aucune rupture de la paroi et donc aucune fuite de liquide, et le contenu du récipient peut être utilisé. Cependant, la clientèle rejette systématiquement des récipients ainsi endommagés qui ne sont donc plus commercialisables . 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.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. Thus, the application of an external force axially on the neck of a container of this type (for example when too many containers are stacked on top of each other - typically packages of bottles stacked on pallets -) can cause a fold of the wall of plastic material at the shoulder of the container, under the neck; As a result, the neck returns partially in the shoulder, generally on one side of the container, so that the neck is then strongly inclined relative to the axis of the container. Often, there is no rupture of the wall and therefore no leakage of liquid, and the contents of the container can be used. However, the customer systematically rejects damaged containers that are no longer marketable. 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. It is typically the case of containers which are filled in 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. 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, eux aussi, 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 .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. 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 containers of special shapes are substantially more expensive, too, than traditional containers. By cons, if the container is insufficiently resistant, it deforms uncontrollably and, again, its poor appearance makes it difficult to market.
Il existe donc une demande pressante pour des récipients de formes traditionnelles, typiquement pour des bouteilles à corps de forme générale sensiblement cylindrique, aptes cependant à supporter, du moins dans une certaine mesure, des efforts sans déformation non contrôlée sensible, en particulier dans le cas d'un remplissage avec un liquide chaud, et sans surcoût notable du récipient.There is therefore an urgent demand for containers of traditional shapes, typically for cylinders with generally cylindrical generally cylindrical bodies, able, however, to withstand, to a certain extent, efforts without appreciable non-controlled deformation, in particular in the case filling with a hot liquid, and without significant additional cost of the container.
L'invention a précisément pour objet de répondre à ces attentes et de proposer un récipient perfectionné qui puisse supporter des efforts, qu'il s'agisse par exemple d'efforts externes appliqués notamment sur le col ou surtout d'efforts internes dus à une mise en dépression du récipient, en particulier à la suite du remplissage avec un liquide chaud.The purpose of the invention is precisely to meet these expectations and to propose an improved container which can withstand efforts, whether for example external forces applied in particular on the neck or especially internal forces due to depression of the container, especially after filling with a hot liquid.
A ces fins, l'invention propose un récipient, notamment une bouteille, en matière thermoplastique tel que du PET, comportant un corps pourvu d'au moins une cannelure d'étendue périphérique fermée sur elle-même et s 'étendant dans un plan sensiblement perpendiculaire à l'axe du corps, lequel récipient, étant agencé conformément à l'invention, se caractérise en ce que la cannelure possède une profondeur comprise entre environ 3 et 6 mm et en ce que, en section droite, la cannelure comporte : - un fond sensiblement arrondi à relativement petit rayon de courbure compris entre 0,2 et 1,5 mm, deux faces sensiblement planes s ' écartant de part et d'autre dudit fond en formant entre elles un angle compris entre environ 50° et 90°, et - deux faces curvilignes, notamment en arc de cercle, qui, d'un côté, s'écartent des faces planes respectives sous un angle sensiblement inférieur à 180° et se raccordent avec celles-ci par un arrondi de relativement petit rayon de courbure n'excédant pas 1,5 mm et qui, de l'autre côté, se raccordent sensiblement tangentiellement à la paroi du corps.For these purposes, the invention provides a container, in particular a bottle, made of thermoplastic material such as PET, comprising a body provided with at least one groove of peripheral extent closed on itself and extending in a plane substantially perpendicular to the axis of the body, which container, being arranged according to the invention, is characterized in that the groove has a depth of between about 3 and 6 mm and in that, in cross section, the groove comprises: - a substantially rounded bottom with a relatively small radius of curvature of between 0.2 and 1.5 mm, two substantially flat faces spaced apart on either side of said bottom forming between them an angle of between about 50 ° and 90 ° and two curvilinear faces, in particular in an arc of a circle, which, on one side, deviate from the respective planar faces at an angle substantially less than 180 ° and are connected thereto by a rounding of relatively small radius of camber ure not exceeding 1.5 mm and which, on the other side, are connected substantially tangentially to the body wall.
Grâce à cet agencement, la cannelure est une cannelure qui est déformable axialement de façon élastique et qui possède une capacité de pincement axial en présence d'un effort axial appliqué au récipient, notamment sous l'effet d'un rétreint de volume lors du refroidissement d'un liquide versé chaud dans le récipient et/ou sous l'action d'un effort appliqué approximativement axialement sur le récipient (cas de récipients empilés par exemple) .With this arrangement, the groove is a groove which is axially elastically deformable and which has an axial gripping capacity in the presence of an axial force applied to the container, in particular under the effect of a volume shrinkage during cooling a hot poured liquid in the container and / or under the action of a force applied approximately axially on the container (case of stacked containers for example).
Du fait que la cannelure possède une forme homogène sur toute la périphérie du corps du récipient, son pincement se produit de façon identique sur toute son étendue de sorte que le corps du récipient se déforme en restant coaxial à lui-même et sans courbure de ses génératrices externes. Autrement dit, le récipient conserve une forme globalement identique, sans courbure, et sa déformationBecause the groove has a uniform shape over the entire periphery of the container body, its nip occurs identically over its entire extent so that the body of the container deforms remaining coaxial with itself and without curvature of its external generators. In other words, the container retains a generally identical shape, without curvature, and its deformation
(tassement axial) demeure peu perceptible, de sorte que les pertes commerciales entraînées auparavant par la déformation de récipients sont maintenant évitées. Un récipient ainsi agencé répond donc aux attentes de la pratique.(axial settlement) remains hardly perceptible, so that the commercial losses previously caused by the deformation of containers are now avoided. A container thus arranged meets the expectations of the practice.
De préférence, la profondeur de la cannelure déformable est d'environ 4 mm.Preferably, the depth of the deformable groove is about 4 mm.
De préférence également, le fond de la cannelure déformable a un rayon de courbure d'environ 0,5 mm.Also preferably, the bottom of the deformable groove has a radius of curvature of about 0.5 mm.
Avantageusement, les faces planes de la cannelure déformable forment entre elles un angle d'environ 60° à 80°, de préférence d'environ 70°.Advantageously, the flat faces of the deformable groove form between them an angle of about 60 ° to 80 °, preferably about 70 °.
Avantageusement également, l'arrondi entre les faces planes et les faces sensiblement curvilignes possède un rayon de courbure compris entre environ 0,8 et 1,2 mm, de préférence d'environ 1 mm. La mise en œuvre des dispositions de l'invention peut donner lieu à diverses configurations du corps de récipient .Advantageously also, the rounding between the flat faces and the substantially curvilinear faces has a radius of curvature of between about 0.8 and 1.2 mm, preferably about 1 mm. The implementation of the provisions of the invention can give rise to various configurations of the container body.
En particulier, dans un mode de réalisation possible, le récipient peut comporter plusieurs cannelures déformables écartées axialement les unes des autres, le nombre de ces cannelures étant déterminé en fonction de l'importance de la déformation axiale prévue, laquelle, dans le cas plus particulièrement envisagé d'un remplissage avec un liquide chaud, est dépendante de la température du liquide de remplissage et/ou des dimensions du corps du récipient, en particulier de ses dimensions transversales. A titre d'exemple, on pourra prévoir deux ou trois cannelures dans le cas du remplissage avec un liquide à température relativement peu élevée (par exemple de l'ordre de 8O0C), tandis qu'il pourra être de trois à cinq dans le cas du remplissage avec un liquide à température très élevée (par exemple de l'ordre de 9O0C) . On peut également faire en sorte que certaines au moins des cannelures défortnables soient disposées les unes à la suite des autres ou bien, à titre de variante, qu'entre certaines au moins des cannelures déformables est interposée au moins une cannelure non déformable ; en particulier, on peut prévoir dans ce cas que les cannelures déformables alternent avec des cannelures non déformables. On peut également envisager que le corps du récipient soit équipé d'un petit nombre de cannelures déformables en un emplacement quelconque (bas, haut, milieu) , le reste du corps restant exempt de toute cannelure (par exemple aux fins de marquage ou d'apposition d'étiquette) .In particular, in one possible embodiment, the container may comprise a plurality of deformable grooves spaced apart axially from each other, the number of these grooves being determined as a function of the extent of the axial deformation provided, which, in the case more particularly considered a filling with a hot liquid, is dependent on the temperature of the filling liquid and / or the dimensions of the container body, in particular its transverse dimensions. By way of example, provision may be made for two or three splines in the case of filling with a liquid at a relatively low temperature (for example of the order of 80 ° C.), while it may be three to five in the case of filling with a liquid at a very high temperature (for example of the order of 90 ° C.). It can also be ensured that at least some of the deflectable splines are arranged one after the other or alternatively, that between at least some deformable grooves is interposed at least one non-deformable groove; in particular, it can be provided in this case that the deformable grooves alternate with non-deformable grooves. It is also conceivable that the body of the container is equipped with a small number of deformable grooves at any location (bottom, top, middle), the remainder of the body remaining free of any groove (eg for marking or affixing of label).
Une application plus particulièrement visée par les dispositions conformes à l'invention, sans que ceci soit exclusif, concerne un récipient du type bouteille agencé comme il a été indiqué ci-dessus et qui possède un corps de section sensiblement cylindrique.An application more particularly targeted by the provisions according to the invention, without this being exclusive, relates to a container of the bottle type arranged as indicated above and which has a substantially cylindrical section body.
Il est en bien entendu possible d'appliquer l'invention à tous types de récipients, quelles que soient les formes de leurs sections. Ainsi, il devient possible de renforcer un récipient de section polygonale, par exemple triangulaire ; il devient encore possible de renforcer des récipients de section carrée ou rectangulaire, ou encore carrée ou rectangulaire avec des coins arrondis .It is of course possible to apply the invention to all types of containers, whatever the shape of their sections. Thus, it becomes possible to strengthen a container of polygonal section, for example triangular; it is still possible to strengthen square section containers or rectangular, or square or rectangular with rounded corners.
Grâce aux dispositions qui viennent d'être exposées, le récipient équipé conformément à l'invention possède une capacité notable de déformation axiale sans affectation sensible de sa forme générale. Typiquement, pour fixer les idées, il est possible de réaliser une bouteille de 0,5 1 apte à présenter, à la suite d'un remplissage avec un liquide à température élevée (par exemple 90-920C), une réduction de volume de l'ordre de 15 ml, se traduisant par une réduction de hauteur de l'ordre de 4 mm, soit un tassement du corps d'environ 3,15 %.Thanks to the arrangements just described, the container equipped in accordance with the invention has a significant capacity for axial deformation without substantially affecting its general shape. Typically, to fix the ideas, it is possible to make a bottle of 0.5 1 able to present, following a filling with a liquid at high temperature (for example 90-92 0 C), a volume reduction of the order of 15 ml, resulting in a reduction in height of the order of 4 mm, a settlement of the body of about 3.15%.
Au surplus, et il s'agit là d'un avantage qui est loin d'être négligeable, les récipients constitués conformément à l'invention peuvent, tout en présentant les caractéristiques perfectionnées exposées ci-dessus, être allégés de façon sensible par rapport aux récipients antérieurs. Ainsi, typiquement, en lieu et place d'un récipient antérieur d'une contenance de 0,5 1 ayant un corps à panneaux et ayant un poids de 28-29 gr, il est possible de concevoir des récipients de même contenance ayant un poids de l'ordre de 26 gr, voire des récipients encore plus légers d'un poids de l'ordre de 22-23 gr. L'invention sera mieux comprise à la lecture de la description détaillée qui suit de certains modes de réalisation préférés donnés uniquement à titre d'exemples nullement limitatifs. Dans cette description, on se réfère aux dessins annexés sur lesquels : - les figures 1 à 3 sont des vues de côté de respectivement trois récipients du type bouteille équipés d'au moins une cannelure conforme à l'invention, - la figure 4 est une vue schématique de la section droite d'une cannelure conforme à l'invention prévue sur les récipients des figures 1 à 3, etMoreover, and this is an advantage that is far from being negligible, the containers made in accordance with the invention can, while having the improved characteristics described above, be significantly reduced compared to previous containers. Thus, typically, instead of a front container of a capacity of 0.5 1 having a panel body and having a weight of 28-29 gr, it is possible to design containers of the same capacity having a weight of the order of 26 gr, even even lighter containers with a weight of the order of 22-23 gr. The invention will be better understood on reading the following detailed description of certain preferred embodiments given solely by way of non-limiting examples. In this description, reference is made to the accompanying drawings, in which: FIGS. 1 to 3 are side views of respectively three bottle-type containers equipped with at least one groove according to the invention; FIG. 4 is a diagrammatic view of the cross-section of a groove according to the invention provided on the containers of FIGS. 1 to 3, and
- les figures 5A et 5B sont des vues de côté de respectivement deux autres récipients du type bouteille équipés d'au moins une cannelure conforme à l'invention.- Figures 5A and 5B are side views respectively of two other bottle-type containers equipped with at least one groove according to the invention.
En se reportant tout d'abord à la figure 1, il y est représenté, en vue de côté, un récipient 1, ici sous forme d'une bouteille, en matière thermoplastique tel que du PET. Le récipient 1 comporte un corps 2, ici montré avec une forme générale sensiblement cylindrique, qui se raccorde supérieurement à un col 3 par une partie arrondie ou épaule 4 et qui se raccorde intérieurement à un fond de récipient ou assise 5. Le corps 2 est pourvu d'au moins une cannelure 6 d'étendue périphérique fermée sur elle- même et s' étendant dans un plan sensiblement perpendiculaire à l'axe 7 du corps 2.Referring firstly to Figure 1, there is shown, in side view, a container 1, here in the form of a bottle, of thermoplastic material such as PET. The container 1 comprises a body 2, here shown with a substantially cylindrical general shape, which is connected superiorly to a neck 3 by a rounded portion or shoulder 4 and which is connected internally to a bottom of the container or seat 5. The body 2 is provided with at least one groove 6 of peripheral extent closed on itself and extending in a plane substantially perpendicular to the axis 7 of the body 2.
A la figure 4, la cannelure 6 est illustrée à beaucoup plus grande échelle. La cannelure 6 possède une profondeur p comprise entre environ 3 et 6 mm. En section droite, la cannelure 6 comporte :In Figure 4, the groove 6 is illustrated on a much larger scale. The groove 6 has a depth p of between about 3 and 6 mm. In cross section, the groove 6 comprises:
- un fond 8 sensiblement arrondi à relativement petit rayon de courbure Rl compris entre 0,2 et 1,5 mm ;a substantially rounded bottom 8 with a relatively small radius of curvature R1 of between 0.2 and 1.5 mm;
- deux faces 9 sensiblement planes s ' écartant de part et d'autre dudit fond 8 en formant entre elles un angle eu compris entre environ 50° et 90°, et avantageusement compris entre 60° et 80° ;- Two substantially planar faces 9 spaced apart on either side of said bottom 8 forming between them an angle between about 50 ° and 90 °, and preferably between 60 ° and 80 °;
- deux faces 10 curvilignes qui, d'un côté, s'écartent des faces 9 planes respectives sous un angle β sensiblement inférieur à 180° et se raccordent avec lesdites faces 9 planes par un arrondi 11 de relativement petit rayon de courbure R2 n'excédant pas 1,5 mm, avantageusement compris entre 0,8 et 1,2 mm, et qui, de l'autre côté, se raccordent sensiblement tangentiellement à la paroi 12 du corps 2.two curvilinear faces 10 which, on one side, deviate from the respective planar faces 9 at an angle β substantially less than 180 ° and are connected with said flat faces 9 by a rounded portion 11 of relatively small radius of curvature R2 n ' not exceeding 1.5 mm, advantageously between 0.8 and 1.2 mm, and which, on the other side, are connected substantially tangentially to the wall 12 of the body 2.
Le fond 8 de la cannelure 6 ainsi arrangée constitue une charnière grâce à laquelle les deux faces 9 planes peuvent pivoter l'une par rapport à l'autre, l'ensemble formant une pince à ouverture variable en fonction de la charge appliquée à l'une et/ou à l'autre de ces faces 9 planes. Les arrondis 11 de faible rayon de courbure forment des articulations grâce auxquelles les faces 10 curvilignes peuvent accompagner les déplacements des faces 9 planes. Une cannelure agencée d'une telle manière présente une importante capacité de déformation contrôlée. A la figure 4, on a représenté en tirets le contour de la cannelure 6 déformée. Dans un exemple typique de réalisation concernant une bouteille en PET d'une contenance de 0,5 1, la cannelure 6 a une profondeur d'environ 4 mm, son fond 8 a un rayon de courbure Rl d'environ 0,5 mm, ses deux faces 9 sensiblement planes forment entre elles un angle ce de l'ordre de 70°, les deux faces 10 curvilignes sont en arc de cercle, et l'arrondi 11 a un rayon de courbure R2 d'environ 1 mm.The bottom 8 of the groove 6 thus arranged constitutes a hinge thanks to which the two flat faces 9 can pivot relative to each other, the assembly forming a variable opening clamp according to the load applied to the one and / or to the other of these planar faces 9. The rounded 11 of small radius of curvature form articulations by means of which the curvilinear faces 10 can accompany the displacements of the planar faces 9. A groove arranged in such a manner has a large capacity for controlled deformation. In Figure 4, there is shown in broken lines the contour of the groove 6 deformed. In a typical embodiment relating to a PET bottle with a capacity of 0.5 1, the groove 6 has a depth of about 4 mm, its bottom 8 has a radius of curvature R1 of about 0.5 mm, its two substantially planar faces 9 form between them an angle ce of the order of 70 °, the two curvilinear faces 10 arc in a circle, and the rounded 11 has a radius of curvature R2 of about 1 mm.
La cannelure conforme à l'invention peut donner lieu à de nombreuses variantes de mise en œuvre, en fonction du taux de déformation souhaité pour le récipient . Quelques unes de ces variantes possibles sont illustrées à titre d'exemple aux figures 1 à 3.The groove according to the invention can give rise to many implementation variants, depending on the rate of deformation desired for the container. Some of these possible variants are illustrated by way of example in FIGS. 1 to 3.
Une cannelure conforme à l'invention peut certes être mise en œuvre, seule, dans un récipient pour lequel un faible taux de déformation axiale est souhaité.A groove according to the invention can certainly be implemented, alone, in a container for which a low rate of axial deformation is desired.
Toutefois, en pratique et c'est notamment le cas pour les récipients destinés à être remplis avec un liquide chaud (typiquement 800C à 900C, voire plus) , on souhaite que le récipient, puisse subir une restriction de volume de l'ordre de quelques dizaines de millilitres (par exemple de l'ordre de 10 à 20 ml pour une bouteille de 0,5 1, soit une variation de hauteur de l'ordre de 4 mm) . II est nécessaire alors de prévoir plusieurs cannelures déformables agencées selon l'invention, ces cannelures déformables pouvant ou non être combinées avec des cannelures standard non sensiblement déformables .However, in practice and this is particularly the case for containers intended to be filled with a hot liquid (typically 80 0 C to 90 0 C or more), wishes the container, can undergo a volume restriction of the order of a few tens of milliliters (for example of the order of 10 to 20 ml for a bottle of 0.5 1, a change in height of the order of 4 mm). It is then necessary to provide a plurality of deformable grooves arranged according to the invention, these deformable splines may or may not be combined with standard grooves not substantially deformable.
A la figure 1, le récipient 1 sous forme d'une bouteille est équipé exclusivement de cannelures 6 déformables agencées comme exposé plus haut, soit dans cet exemple concret huit cannelures 6 déformables réparties sur approximativement toute la hauteur du corps 2 d'une bouteille de 0,5 1. Pour fixer les idées, deux cannelures consécutives de ce récipient sont séparées d'un intervalle d'environ 12,7 mm et, pour les deux cannelures inférieures, il a été mesuré que le déplacement- d'une cannelure par rapport à l'autre supposée fixe était d'environ 0,4 mm, soit un déplacement d'environ 3,15 %. A la figure 2, les cannelures 6 déformables sont regroupées dans la partie inférieure du corps 2 du récipient 1 sous forme d'une bouteille, tandis que la partie supérieure du récipient est agencée de toute manière souhaitée ; dans l'exemple illustré, le corps 2 est, dans sa partie supérieure, équipé de cannelures 13 standard non sensiblement déformables.In FIG. 1, the container 1 in the form of a bottle is equipped exclusively with deformable splines 6 arranged as described above, or in this specific example eight deformable grooves 6 distributed over approximately the entire height of the body 2 of a bottle of 0.5 1. For the sake of clarity, two consecutive flutes of this container are separated by an interval of about 12.7 mm and for the two lower flutes it has been measured that the displacement of one groove per ratio to the other assumed fixed was about 0.4 mm, a displacement of about 3.15%. In Figure 2, the deformable grooves 6 are grouped in the lower part of the body 2 of the container 1 in the form of a bottle, while the upper part of the container is arranged in any desired manner; in the example illustrated, the body 2 is, in its upper part, equipped with standard grooves 13 not substantially deformable.
A la figure 3, le corps 2 du récipient 1 sous forme d'une bouteille est équipé, sur sensiblement toute sa hauteur, d'une alternance de cannelures 6 selon l'invention et de cannelures 13 standard sensiblement non déformables. A titre de variante, on pourrait prévoir une alternance de paires de cannelures de chaque type . On soulignera que, quelle que soit la répartition des cannelures déformables, la présence de cannelures standard, non déformables, dans le reste du corps du récipient n'est pas impérative ; en outre, lorsqu'elles sont localisées, les cannelures déformables peuvent être disposées en tout emplacement souhaité (bas, haut, milieu) du corps du récipient, le reste du corps pouvant être conformé de toute façon appropriée (par exemple forme lisse, polygonale, ...) , notamment à des fins de marquage ou d'apposition d'une étiquette. A titre d'exemple, à la figure 5A le corps 2 d'un récipient sous forme d'une bouteille est équipé de deux cannelures 6 déformables selon l'invention qui sont situées l'une à la suite de l'autre dans la partie haute du corps, le reste du corps étant dépourvu de cannelures et lisse. A la figure 5B, le corps 2 d'un récipient sous forme d'une bouteille est pourvu de trois cannelures 6 déformables selon 1 ' invention qui sont situées les unes à la suite des autres dans le bas du corps, le reste du corps étant dépourvu de cannelures et lisse.In Figure 3, the body 2 of the container 1 in the form of a bottle is equipped, over substantially its entire height, an alternation of grooves 6 according to the invention and substantially non-deformable standard grooves 13. Alternatively, one could provide alternating pairs of flutes of each type. It should be emphasized that whatever the distribution of the deformable splines, the presence of standard, non-deformable grooves in the rest of the body of the container is not imperative; in addition, when localized, the deformable splines may be arranged in any desired location (bottom, top, middle) of the container body, the remainder of the body being shaped in any suitable manner (eg smooth, polygonal shape, ...), in particular for purposes of marking or affixing a label. By way of example, in FIG. 5A the body 2 of a container in the form of a bottle is equipped with two deformable grooves 6 according to the invention which are located one after the other in the part upper body, the rest of the body being devoid of grooves and smooth. In FIG. 5B, the body 2 of a container in the form of a bottle is provided with three deformable grooves 6 according to the invention which are located one after the other in the lower part of the body, the rest of the body being devoid of grooves and smooth.
Quelle que soit la configuration retenue pour la répartition des cannelures 6 déformables, leur nombre est choisi en fonction de l'amplitude de la déformation axiale souhaitée pour le récipient. En particulier, cette amplitude est fonction de la température du liquide chaud de remplissage et/ou des dimensions du corps du récipient, notamment de ses dimensions transversales. Ainsi, pour un liquide à une température relativement peu élevée, par exemple de l'ordre de 800C, le nombre des cannelures 6 déformables peut être de deux ou trois ; par contre, lorsque le liquide est à une température relativement élevée, par exemple de l'ordre de 90-920C, le nombre des cannelures 6 dêformables doit être plus élevé, de l'ordre de trois à cinq. Whatever the configuration chosen for the distribution of the deformable grooves 6, their number is chosen according to the amplitude of the axial deformation desired for the container. In particular, this amplitude is a function of the temperature of the hot filling liquid and / or the dimensions of the container body, in particular of its transverse dimensions. Thus, for a liquid at a relatively low temperature, for example of the order of 80 0 C, the number of deformable grooves 6 can be two or three; on the other hand, when the liquid is at a relatively high temperature, for example of the order of 90-92 ° C., the number of 6 deformable grooves must be higher, of the order of three to five.

Claims

REVENDICATIONS
1. Récipient (1), notamment bouteille, en matière thermoplastique tel que du PET7 comportant un corps (2) pourvu d'au moins une cannelure (6) d'étendue périphérique fermée sur elle-même et s 'étendant dans un plan sensiblement perpendiculaire à l'axe (7) du corps, caractérisé en ce que la cannelure (6) possède une profondeur (p) comprise entre environ 3 et 6 mm et en ce que, en section droite, la cannelure (6) comporte :A container (1), in particular a bottle, of thermoplastic material such as PET 7 comprising a body (2) provided with at least one flute (6) of peripheral extent closed on itself and extending in a plane substantially perpendicular to the axis (7) of the body, characterized in that the groove (6) has a depth (p) of between about 3 and 6 mm and that, in cross-section, the groove (6) comprises:
- un fond (8) sensiblement arrondi à relativement petit rayon de courbure (Rl) compris entre 0,2 et 1,5 mm,a substantially rounded bottom (8) with a relatively small radius of curvature (R1) of between 0.2 and 1.5 mm,
- deux faces (9) sensiblement planes s ' écartant de part et d'autre dudit fond (8) en formant entre elles un angle (α) compris entre environ 50° et 90° , ettwo substantially planar faces (9) spaced apart on either side of said bottom (8) forming between them an angle (α) of between approximately 50 ° and 90 °, and
- deux faces (10) curvilignes qui, d'un côté, s'écartent des faces (9) planes respectives sous un angle (|S) sensiblement inférieur à 180° et se raccordent avec celles-ci par un arrondi (11) de relativement petit rayon de courbure (R2) n'excédant pas 1,5 mm et qui, de l'autre côté, se raccordent sensiblement tangentiellement à la paroi (12) du corps (2) , ce grâce à quoi la cannelure (6) est une cannelure déformable axialement qui possède une capacité de pincement axial en présence d'un effort axial appliqué au récipient .two curvilinear faces (10) which, on one side, deviate from respective planar faces (9) at an angle (| S) substantially less than 180 ° and are connected thereto by a rounding (11) of relatively small radius of curvature (R2) not exceeding 1.5 mm and which, on the other side, are connected substantially tangentially to the wall (12) of the body (2), whereby the groove (6) is an axially deformable groove which has an axial clamping capacity in the presence of an axial force applied to the container.
2. Récipient selon la revendication 1, caractérisé en ce que la profondeur (p) de la cannelure (6) déformable est d'environ 4 mm.2. Container according to claim 1, characterized in that the depth (p) of the deformable groove (6) is about 4 mm.
3. Récipient selon la revendication 1 ou 2, caractérisé en ce que le fond (8) de la cannelure (6) déformable a un rayon de courbure (Rl) d'environ 0,5 mm. 3. Container according to claim 1 or 2, characterized in that the bottom (8) of the deformable groove (6) has a radius of curvature (R1) of about 0.5 mm.
4. Récipient selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les faces (9) planes de la cannelure (6) déformable forment entre elles un angle (α) d'environ 60° à 80°. 4. Container according to any one of claims 1 to 3, characterized in that the planar faces (9) of the deformable groove (6) form between them an angle (α) of about 60 ° to 80 °.
5. Récipient selon la revendication 4, caractérisé en ce que les faces (9) planes de la cannelure (6) déformable forment entre elles un angle (α) d'environ 70°.5. Container according to claim 4, characterized in that the planar faces (9) of the deformable groove (6) form between them an angle (α) of about 70 °.
6. Récipient selon l'une quelconque des revendications 1 à 5, caractérisé en ce que l'arrondi (11) entre les faces (9) planes et les faces (10) curvilignes possède un rayon de courbure (R2) compris entre environ 0,8 et 1,2 mm.6. Container according to any one of claims 1 to 5, characterized in that the rounding (11) between the planar faces (9) and the curvilinear faces (10) has a radius of curvature (R2) between about 0 , 8 and 1.2 mm.
7. Récipient selon la revendication 6, caractérisé en ce que l'arrondi (11) entre les faces (9) planes et les faces (10) curvilignes possède un rayon de courbure (R2) d'environ 1 mm.7. Container according to claim 6, characterized in that the rounding (11) between the planar faces (9) and the curvilinear faces (10) has a radius of curvature (R2) of about 1 mm.
8. Récipient selon l'une quelconque des revendications 1 à 7, caractérisé en ce qu'il comporte plusieurs cannelures (6) déformables écartées axialement les unes des autres.8. Container according to any one of claims 1 to 7, characterized in that it comprises a plurality of grooves (6) deformable spaced axially from each other.
9. Récipient selon la revendication 8, caractérisé en ce que certaines au moins des cannelures (6) déformables sont disposées les unes à la suite des autres .9. Container according to claim 8, characterized in that at least some deformable grooves (6) are arranged one after the other.
10. Récipient selon la revendication 8, caracté- risê en ce qu'entre certaines au moins des cannelures (6) déformables est interposée au moins une cannelure (13) non déformable.10. Container according to claim 8, characterized in that between at least some of the deformable grooves (6) is interposed at least one groove (13) non-deformable.
11. Récipient selon la revendication 10, caractérisé en ce que les cannelures (6) déformables alternent avec des cannelures (13) non déformables.Container according to claim 10, characterized in that the deformable splines (6) alternate with non-deformable splines (13).
12. Récipient selon la revendication 8 ou 9, caractérisé en ce que les cannelures (6) déformables, en petit nombre, sont regroupées dans une partie du corps (2) du récipient et en ce que le reste du corps (2) est dépourvu de cannelures . Container according to claim 8 or 9, characterized in that the deformable grooves (6), in small numbers, are grouped in a part of the body (2). of the container and that the remainder of the body (2) is devoid of grooves.
EP06778676A 2005-07-12 2006-06-26 Container, in particular bottle, made of thermoplastic material Active EP1912874B1 (en)

Applications Claiming Priority (2)

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FR0507493A FR2888563B1 (en) 2005-07-12 2005-07-12 CONTAINER, IN PARTICULAR BOTTLE, THERMOPLASTIC MATERIAL
PCT/FR2006/001481 WO2007006880A1 (en) 2005-07-12 2006-06-26 Container, in particular bottle, made of thermoplastic material

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EP1912874A1 true EP1912874A1 (en) 2008-04-23
EP1912874B1 EP1912874B1 (en) 2009-04-15

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US (1) US7837049B2 (en)
EP (1) EP1912874B1 (en)
JP (1) JP4580014B2 (en)
CN (1) CN101263065B (en)
AT (1) ATE428654T1 (en)
DE (1) DE602006006318D1 (en)
ES (1) ES2324060T3 (en)
FR (1) FR2888563B1 (en)
PT (1) PT1912874E (en)
WO (1) WO2007006880A1 (en)

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Publication number Publication date
FR2888563A1 (en) 2007-01-19
EP1912874B1 (en) 2009-04-15
ATE428654T1 (en) 2009-05-15
WO2007006880A1 (en) 2007-01-18
JP2009501115A (en) 2009-01-15
CN101263065A (en) 2008-09-10
CN101263065B (en) 2010-05-26
PT1912874E (en) 2009-07-14
JP4580014B2 (en) 2010-11-10
US20080197105A1 (en) 2008-08-21
DE602006006318D1 (en) 2009-05-28
US7837049B2 (en) 2010-11-23
FR2888563B1 (en) 2007-10-05
ES2324060T3 (en) 2009-07-29

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