EP0807588B1 - Vacuum package closed by a lid - Google Patents

Vacuum package closed by a lid Download PDF

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Publication number
EP0807588B1
EP0807588B1 EP19970401039 EP97401039A EP0807588B1 EP 0807588 B1 EP0807588 B1 EP 0807588B1 EP 19970401039 EP19970401039 EP 19970401039 EP 97401039 A EP97401039 A EP 97401039A EP 0807588 B1 EP0807588 B1 EP 0807588B1
Authority
EP
European Patent Office
Prior art keywords
container
cover
lid
annular wall
packaging
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19970401039
Other languages
German (de)
French (fr)
Other versions
EP0807588A1 (en
Inventor
Jean-François Dubois
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.)
V M C
Original Assignee
V M C
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Filing date
Publication date
Application filed by V M C filed Critical V M C
Publication of EP0807588A1 publication Critical patent/EP0807588A1/en
Application granted granted Critical
Publication of EP0807588B1 publication Critical patent/EP0807588B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
    • B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
    • B65D81/2007—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum
    • B65D81/2015—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum in an at least partially rigid container
    • 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
    • B65D1/10—Jars, e.g. for preserving foodstuffs

Definitions

  • the present invention relates to packaging comprising a container and a lid held on the container thanks to the pressure difference established between its two faces.
  • the invention therefore relates to a packaging comprising a container whose opening is bordered by an annular wall which has a surface terminal and a cover kept pressed on this container end surface thanks to the difference of pressure established between its two faces, in which the end surface of the annular wall is striated with concentric grooves.
  • each of the grooves, from the inside towards the outside of the container constitutes a chamber intermediate in which the pressure which is established is intermediate between that prevailing outside the container (atmospheric pressure) and that prevailing at inside the container (partial vacuum).
  • the terminal surface of the annular wall is in the form of a truncated cone, the small base of which forms the vertex of this terminal surface.
  • we voluntarily creates an imbalance of the friction forces so that the friction between the outer edge neighbor of the large base of the truncated cone is less important than the existing friction at the edge interior near the small base of this truncated cone. It is then possible by means of the cams provided on the side wall of the container to exert an effort on the skirt of the cover tending to slightly deform this cover to create a vanishing point allowing air to enter inside the container and the release of forces from friction.
  • the packaging of the invention comprises a container 1 for example made of glass with a upper opening 2 bordered by an annular wall 3.
  • This annular wall has a terminal surface 4 which has circular grooves 5 (for example two circular grooves defining between them three vertices.)
  • a cover 6 having a skirt 7 can come freely cover the terminal part of the annular wall 3 bordering the opening 2 of the container 1.
  • this cover 6 comprises at the base of its skirt 7, teeth 8 facing inward which can be supported when you rotate the cover relative to container on cam surfaces 9 ramp-shaped protruding from the surface outside of the annular wall 3.
  • the cover 6 has on its internal surface 6a and at near the skirt 7, a layer of sealing material 10 of the polymer or rubber kind by which it rests on the terminal surface 4 of the annular wall 3.
  • the terminal surface 4 is therefore provided with two grooves 5 which define between them three projections of triangular section 11, the apex of these projections being in a plane substantially perpendicular to the general axis of the container.
  • the two grooves 5 constitute intermediate chambers in which the prevailing pressure is between the external and internal pressure of the container.
  • the difference pressure tending to break the seal established at each vertex 11 is less than the pressure difference between the inside and the outside of the container. It follows that at each vertex, the sealing material 10 is less stressed therefore can resist a longer tendency to flee and let the atmosphere inside of the container.
  • FIG. 3 differs simply that of FIG. 2 by the fact that the terminal surface 4 in which each projection is located 11, is the lateral surface of a trunk of cone very flattened, the angle at the top can be of the order of 170 to 175 °, the large base of this truncated cone being on the outside of the container and the small base being inside and forming the top of the surface 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Ceramic Engineering (AREA)
  • Closures For Containers (AREA)
  • Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Packages (AREA)

Description

La présente invention concerne un conditionnement comportant un récipient et un couvercle maintenu sur le récipient grâce à la différence de pression établie entre ses deux faces.The present invention relates to packaging comprising a container and a lid held on the container thanks to the pressure difference established between its two faces.

Ce type de récipient est bien connu et l'étanchéité de la fermeture est en général bien conservée au cours du temps. En effet, le couvercle qui ne fait que reposer sur la surface terminale du récipient comporte dans cette zone de contact une sorte de revêtement souple d'étanchéité et qui lui permet d'épouser correctement cette surface formant ainsi une barrière efficace pour l'atmosphère ambiante tendant à rentrer dans le récipient fermé en dépression.This type of container is well known and the seal closure is generally well preserved at over time. Indeed, the cover which only rest on the terminal surface of the container has in this contact area a kind of flexible coating that allows it to properly fit this surface thus forming an effective barrier to the atmosphere ambient tending to re-enter the closed container depression.

Pour ouvrir ce type de conditionnement, l'utilisateur manoeuvre en rotation le couvercle qui glisse sur la surface terminale bordant l'ouverture jusqu'à ce que des pattes portées par une jupe de ce couvercle prennent appui sur des surfaces de came latérales que comporte le col du récipient, ces surfaces de came transformant progressivement le mouvement de rotation en un mouvement de séparation du couvercle d'avec le récipient permettant de rompre la liaison étanche. Cet état de la technique constitue le préambule de la revendication 1To open this type of packaging, the user maneuver in rotation the cover which slides on the terminal surface bordering the opening until legs carried by a skirt of this cover are supported on lateral cam surfaces which the neck of the container, these cam surfaces gradually transforming the rotational movement into a separation movement of the lid with the container allowing to break the waterproof connection. This state of the art constitutes the preamble to the claim 1

L'effort à développer par l'utilisateur est quelquefois important notamment lorsque le récipient est petit, ce qui fait que le couple que l'on peut transmettre au couvercle est relativement faible. Il arrive donc que l'utilisateur ne puisse rompre l'adhérence du couvercle sur le col du récipient, parce que les surfaces en contact en regard du couple appliqué offrent une friction qui ne peut être vaincue par ce couple. L'importance de cette surface de friction dépend, pour un diamètre donné, de l'épaisseur de la paroi du récipient, épaisseur sur laquelle le fabricant ne peut pratiquement pas intervenir.The effort to be developed by the user is sometimes important especially when the container is small, which means that the torque that can be transmitted at the cover is relatively small. So it happens that the user cannot break the adhesion of the cover on the neck of the container, because the surfaces in contact compared to the applied torque offer friction which does not can be defeated by this couple. The importance of this friction surface depends, for a given diameter, on the thickness of the container wall, thickness over which the manufacturer can practically not intervene.

Il y a donc un besoin non résolu d'offrir un conditionnement, refermé par un couvercle adhérent sous vide, qui soit aisé à ouvrir notamment lorsqu'il est de petite taille. L'invention permet de satisfaire ce besoin tout en préservant la qualité de l'étanchéité réalisée entre couvercle et récipient du conditionnement.There is therefore an unresolved need to offer a packaging, closed by an adherent cover under empty, which is easy to open especially when it is small size. The invention makes it possible to satisfy this need while preserving the quality of the seal produced between lid and packaging container.

A cet effet, l'invention a donc pour objet un conditionnement comportant un récipient dont l'ouverture est bordée par une paroi annulaire qui possède une surface terminale et un couvercle maintenu en appui sur cette surface terminale du récipient grâce à la différence de pression établie entre ses deux faces, dans lequel la surface terminale de la paroi annulaire est striée de rainures concentriques. On diminue ainsi l'importance des surfaces en contact, ce qui permet de diminuer le couple de frottement résistant au couple tendant à ouvrir le récipient. Par ailleurs, chacune des rainures, de l'intérieur vers l'extérieur du récipient constitue une chambre intermédiaire dans laquelle la pression qui s'établit est intermédiaire entre celle régnant à l'extérieur du récipient (la pression atmosphérique) et celle régnant à l'intérieur du récipient (un vide partiel). Ainsi, la différence de pression existant au droit de chaque arête de contact du récipient avec la matière d'étanchéité que porte le couvercle sur sa face intérieure est inférieure à la différence de pression totale entre l'intérieur et l'extérieur du récipient. Il s'ensuit que au niveau de chaque arête, l'étanchéité est mieux assurée parce que soumise à un gradient de pression plus faible.To this end, the invention therefore relates to a packaging comprising a container whose opening is bordered by an annular wall which has a surface terminal and a cover kept pressed on this container end surface thanks to the difference of pressure established between its two faces, in which the end surface of the annular wall is striated with concentric grooves. The importance of surfaces in contact, which reduces the torque of torque-resistant friction tending to open the container. In addition, each of the grooves, from the inside towards the outside of the container constitutes a chamber intermediate in which the pressure which is established is intermediate between that prevailing outside the container (atmospheric pressure) and that prevailing at inside the container (partial vacuum). So the pressure difference existing at the right of each edge of contact of the container with the sealing material that is carried the cover on its inner side is less than the total pressure difference between inside and outside of the container. It follows that at the level of each edge, sealing is better ensured because subject to a lower pressure gradient.

Dans une variante d'un mode de réalisation de l'invention, la surface terminale de la paroi annulaire est en forme de tronc de cône dont la petite base constitue le sommet de cette surface terminale. Dans cette variante, on crée volontairement un déséquilibre des forces de frottement si bien que la friction entre l'arête extérieure voisine de la grande base du tronc de cône est moins importante que la friction existante au niveau de l'arête intérieure voisine de la petite base de ce tronc de cône. Il est alors possible au moyen des cames prévues sur la paroi latérale du récipient d'exercer un effort sur la jupe du couvercle tendant à déformer légèrement ce couvercle pour créer un point de fuite permettant l'entrée d'air à l'intérieur du récipient et la libération des forces de frottement.In a variant of an embodiment of the invention, the terminal surface of the annular wall is in the form of a truncated cone, the small base of which forms the vertex of this terminal surface. In this variant, we voluntarily creates an imbalance of the friction forces so that the friction between the outer edge neighbor of the large base of the truncated cone is less important than the existing friction at the edge interior near the small base of this truncated cone. It is then possible by means of the cams provided on the side wall of the container to exert an effort on the skirt of the cover tending to slightly deform this cover to create a vanishing point allowing air to enter inside the container and the release of forces from friction.

D'autres caractéristiques et avantages ressortiront de la description de l'invention donnée ci-après à titre d'exemple non limitatif.Other features and advantages will emerge of the description of the invention given below to by way of nonlimiting example.

Il sera fait référence aux dessins annexés parmi lesquels :

  • la figure 1 est une vue générale d'un conditionnement conforme à l'invention ;
  • la figure 2 est une vue partielle en coupe d'un premier mode de réalisation de l'invention ;
  • la figure 3 est une vue partielle en coupe d'un deuxième mode de réalisation de l'invention.
Reference will be made to the accompanying drawings, in which:
  • Figure 1 is a general view of a packaging according to the invention;
  • Figure 2 is a partial sectional view of a first embodiment of the invention;
  • Figure 3 is a partial sectional view of a second embodiment of the invention.

A la figure 1, le conditionnement de l'invention comporte un récipient 1 par exemple en verre avec une ouverture supérieure 2 bordée par une paroi annulaire 3. Cette paroi annulaire possède une surface terminale 4 qui comporte des rainures circulaires 5 (par exemple deux rainures circulaires définissant entre elles trois sommets.)In FIG. 1, the packaging of the invention comprises a container 1 for example made of glass with a upper opening 2 bordered by an annular wall 3. This annular wall has a terminal surface 4 which has circular grooves 5 (for example two circular grooves defining between them three vertices.)

Un couvercle 6 possédant une jupe 7 peut venir coiffer librement la partie terminale de la paroi annulaire 3 bordant l'ouverture 2 du récipient 1.A cover 6 having a skirt 7 can come freely cover the terminal part of the annular wall 3 bordering the opening 2 of the container 1.

De manière connue, ce couvercle 6 comporte à la base de sa jupe 7, des dents 8 tournées vers l'intérieur qui peuvent prendre appui lorsque l'on fait tourner le couvercle par rapport au récipient sur des surfaces de came 9 en forme de rampe qui font saillies de la surface extérieure de la paroi annulaire 3.In known manner, this cover 6 comprises at the base of its skirt 7, teeth 8 facing inward which can be supported when you rotate the cover relative to container on cam surfaces 9 ramp-shaped protruding from the surface outside of the annular wall 3.

Par ailleurs, également de manière connue le couvercle 6 possède sur sa surface interne 6a et au voisinage de la jupe 7, une couche d'un matériau d'étanchéité 10 du genre polymère ou caoutchouc par lequel il repose sur la surface terminale 4 de la paroi annulaire 3. A la figure 2, la surface terminale 4 est pourvue donc de deux rainures 5 qui définissent entre elles trois saillies de section triangulaire 11, le sommet de ces saillies étant dans un plan sensiblement perpendiculaire à l'axe général du récipient. On comprend que par cette disposition, on a diminué la surface de contact entre le matériau 10 qui possède une grande propension à adhérer à une surface lisse telle que le verre et la surface terminale 4. Il s'ensuit qu'il est ainsi plus aisé de tourner le couvercle 6 pour ouvrir le récipient pour la première fois. Par ailleurs, les deux rainures 5 constituent des chambres intermédiaires dans lesquelles la pression régnante est comprise entre la pression extérieure et intérieure du récipient. La différence de pression tendant à rompre l'étanchéité établie à chaque sommet 11 est inférieure à la différence de pression entre l'intérieur et l'extérieur du récipient. Il s'ensuit que au niveau de chaque sommet, le matériau 10 d'étanchéité est moins sollicité donc peut résister plus longtemps à une tendance à fuir et à laisser entrer l'atmosphère à l'intérieur du récipient.Furthermore, also in a known manner the cover 6 has on its internal surface 6a and at near the skirt 7, a layer of sealing material 10 of the polymer or rubber kind by which it rests on the terminal surface 4 of the annular wall 3. In FIG. 2, the terminal surface 4 is therefore provided with two grooves 5 which define between them three projections of triangular section 11, the apex of these projections being in a plane substantially perpendicular to the general axis of the container. We understand that by this provision, we have decreased the contact surface between the material 10 which has a high propensity to adhere to a smooth surface such as glass and terminal surface 4. It follows that it is easier to turn the cover 6 to open the container for the first time. Otherwise, the two grooves 5 constitute intermediate chambers in which the prevailing pressure is between the external and internal pressure of the container. The difference pressure tending to break the seal established at each vertex 11 is less than the pressure difference between the inside and the outside of the container. It follows that at each vertex, the sealing material 10 is less stressed therefore can resist a longer tendency to flee and let the atmosphere inside of the container.

La variante représentée à la figure 3 diffère simplement de celle de la figure 2 par le fait que la surface terminale 4 dans laquelle est située chaque saillie 11, est la surface latérale d'un tronc de cône très aplati, l'angle au sommet pouvant être de l'ordre de 170 à 175°, la grande base de ce tronc de cône étant à l'extérieur du récipient et la petite base étant à l'intérieur et formant le sommet de la surface terminale 4. Par ces dispositions, on privilégie le rôle de la saillie 11 la plus intérieure, autour de laquelle le couvercle est le mieux assujetti sur le récipient, si bien que, lorsque la jupe 7 par ces pattes 8 rencontre une rampe 9, cette rampe tend à faire pivoter la partie de couvercle autour de la saillie 11 la plus intérieure en libérant d'abord l'étanchéité entre la saillie 11 la plus extérieure et le matériau 10, l'air alors, par un effet dynamique, envahissant ensuite, chacune des rainures 5 avec une pression qui tend à rompre la dernière étanchéité, à remplir le récipient et donc à libérer rapidement le couvercle de son contact avec le récipient.The variant shown in Figure 3 differs simply that of FIG. 2 by the fact that the terminal surface 4 in which each projection is located 11, is the lateral surface of a trunk of cone very flattened, the angle at the top can be of the order of 170 to 175 °, the large base of this truncated cone being on the outside of the container and the small base being inside and forming the top of the surface 4. By these provisions, the role of the innermost projection 11, around which the lid is best secured on the container, so that when the skirt 7 by these legs 8 meets a ramp 9, this ramp tends to pivot the cover part around the innermost projection 11 freeing first the seal between the outermost projection 11 and the material 10, the air then, by a dynamic effect, then invading, each of the grooves 5 with a pressure which tends to break the last seal, to fill the container and therefore quickly release the cover of its contact with the container.

Claims (2)

  1. Packaging comprising a receptacle (1) whose opening (2) is surrounded by an annular wall (3) which possess an end surface (4), and a lid (6) held on the receptacle by a pressure difference established across its two faces and separable from the receptacle by being rotated, the packaging being characterized in that the end surface (4) of the annular wall (3) is formed with concentric grooves (5).
  2. Packaging according to claim 1, characterized in that the end surface (4) of the annular wall (3) describes the side surface of a truncated cone whose small base constitutes the top of said end surface (4).
EP19970401039 1996-05-14 1997-05-07 Vacuum package closed by a lid Expired - Lifetime EP0807588B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9605984 1996-05-14
FR9605984A FR2748732B1 (en) 1996-05-14 1996-05-14 VACUUM PACKAGING CLOSED BY A LID

Publications (2)

Publication Number Publication Date
EP0807588A1 EP0807588A1 (en) 1997-11-19
EP0807588B1 true EP0807588B1 (en) 1999-03-10

Family

ID=9492113

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970401039 Expired - Lifetime EP0807588B1 (en) 1996-05-14 1997-05-07 Vacuum package closed by a lid

Country Status (4)

Country Link
EP (1) EP0807588B1 (en)
DE (1) DE69700128T2 (en)
ES (1) ES2131427T3 (en)
FR (1) FR2748732B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2829106B1 (en) * 2001-08-28 2004-10-01 Larroche Brigitte METHOD AND DEVICE FOR VACUUM CLOSURE OF A FOOD CONTAINER
FR3113896B1 (en) * 2020-09-04 2022-08-19 Verallia Packaging Hollow glass container with specific rim profile

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR41653E (en) * 1932-04-07 1933-03-10 Parfumerie Houbigant Improvements to container closure systems
GB490787A (en) * 1937-05-26 1938-08-22 Seth Fortune Improvements in or relating to tins, boxes, canisters and like containers
US3933267A (en) * 1973-07-16 1976-01-20 The West Company Container closure assembly
FR2387856A1 (en) * 1977-04-20 1978-11-17 Bouchage Mecanique Container with vacuum seal cap - has flexible cap with weakened zone, ruptured to release vacuum and free cap
SE444301B (en) * 1980-08-19 1986-04-07 Bjoerk Lars CONTAINER WITH LID

Also Published As

Publication number Publication date
EP0807588A1 (en) 1997-11-19
DE69700128T2 (en) 1999-09-09
DE69700128D1 (en) 1999-04-15
FR2748732A1 (en) 1997-11-21
FR2748732B1 (en) 1998-06-26
ES2131427T3 (en) 1999-07-16

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