EP0463949B1 - Device for storing liquid or pasty product for dispensing without suction of air, and its manufacture - Google Patents

Device for storing liquid or pasty product for dispensing without suction of air, and its manufacture Download PDF

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Publication number
EP0463949B1
EP0463949B1 EP91401693A EP91401693A EP0463949B1 EP 0463949 B1 EP0463949 B1 EP 0463949B1 EP 91401693 A EP91401693 A EP 91401693A EP 91401693 A EP91401693 A EP 91401693A EP 0463949 B1 EP0463949 B1 EP 0463949B1
Authority
EP
European Patent Office
Prior art keywords
cover
faces
container
preform
halves
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
EP91401693A
Other languages
German (de)
French (fr)
Other versions
EP0463949A1 (en
Inventor
Pierre Lugez
Michel Brunet
Claude Jouillat
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.)
Aptar France SAS
Original Assignee
Valois SAS
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Filing date
Publication date
Application filed by Valois SAS filed Critical Valois SAS
Publication of EP0463949A1 publication Critical patent/EP0463949A1/en
Application granted granted Critical
Publication of EP0463949B1 publication Critical patent/EP0463949B1/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
    • 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
    • B65D1/32—Containers adapted to be temporarily deformed by external pressure to expel contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/02—Membranes or pistons acting on the contents inside the container, e.g. follower pistons
    • B05B11/026—Membranes separating the content remaining in the container from the atmospheric air to compensate underpressure inside the 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
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1061—Pump priming means

Definitions

  • the present invention relates to a device intended to contain a liquid or pasty product to be dispensed without air intake, and to its manufacturing process.
  • the product in question can be a food product, a hygiene product, a cosmetic product, or any other product which must be stored away from air.
  • Such a product can be dispensed, with or without spraying, using a manual pump or by another device which does not allow air to enter a container containing the product to be dispensed.
  • the container must therefore be deformable so that its internal volume is always equal to the volume of product remaining to be dispensed.
  • a problem which can arise with any flexible bag is that it can deform by making many folds, and that its wall can come to obstruct the outlet for the product, before all the product it contains is consumed.
  • the object of the present invention is to avoid this drawback.
  • the present invention therefore relates to a device intended to contain a liquid or pasty product to be dispensed without air intake, constituted by the collaboration of a container containing the product to be dispensed and a container cover, said container being inserted.
  • a container containing the product to be dispensed and a container cover said container being inserted.
  • said canister cover and said canister cover consisting of a peripheral side wall extending between a bottom and a throttle through which opens a neck, characterized in that said canister cover has at least two ribs longitudinal facing each other, said ribs forcing the side wall, the bottom and the throat of the container to bend in the manner of an accordion.
  • the present invention may include such a device, in which the side wall of the container has six faces separated by edges, two opposite substantially parallel first faces of greater width than the other faces, the first two faces being of width substantially identical, the other faces all being substantially the same width and distributed in two pairs each separating the first two faces, each pair of lesser width faces being extended by a first bulge up to the constriction of the container and by a second bulge to the bottom of the container, and in which the edges and the bulges are of finer thickness than the other elements of the canister, and therefore are more flexible, so that the ribs of the canister cover can cause the faces of smaller width to enter the interior of the canister, the edges playing the role of hinge.
  • the two wider faces approach each other, remaining substantially parallel, while the other faces continue to return towards the interior of the container, tending to become parallel to said wider faces, and the bottom and the horizontal wall of the container continue to crease, except in the vicinity of the rigid neck where the first wider faces remain spaced apart from each other by a certain distance , so that almost all of the product contained in the container can be dispensed, without the walls of the container being able to close the neck prematurely.
  • the device can be supplemented by a dispensing pump, the deformation of the can caused by the ribs when it is placed in the can cover causing sufficient overpressure of the product to be dispensed to discharge into the pump, by priming said pump.
  • the canister cover may include a bottom and a neck intended to grip the neck of the canister, said canister cover being able to separate longitudinally into two halves in order to be able to place the canister inside of the bottle cage.
  • the two halves of the canister are fixed to each other by means of lips, overlapping when the two halves of the canister are joined, said lips being provided with a latching means.
  • the latching means may include a groove formed on the lip (s) of one of the halves of the canister, and a complementary rib produced on the lip (s) of the other half of the canister .
  • the bottom of the canister does not separate into two halves, and it is connected by a hinge to each half of said canister.
  • the present invention also relates to a method of manufacturing the device according to the invention, in which the formation of the container comprises at least the step of blowing a compressed gas in a hollow preform having an open end and brought to a temperature sufficient for be deformable, said preform being arranged in a mold having the shape of the can to be produced, so that said preform expands until it matches the shape of the mold, characterized in that the parts of the preform corresponding to the edges and bulges of the final container are those which move the most from their initial position during the blowing step, so that the edges and bulges are the thinnest and most flexible parts of the container.
  • Figures 3 and 4 show an embodiment of a container 1 used in the device of the invention.
  • the container 1 comprises a bottom 3, from which extends vertically upwards a peripheral side wall 4, extended at an upper end by a horizontal wall 2a forming a constriction, through which opens a neck 2, substantially in the center of said wall 2a.
  • the container 1 has two perpendicular vertical planes of symmetry, referenced 41 and 42 in FIG. 4.
  • the side wall 4 comprises for example six faces, among which two opposite faces 5 can be of width greater than the other faces 6.
  • the two faces 5 are of identical width, and the faces 6 are all four of the same width.
  • the contiguous faces are joined by rounded or non-rounded edges 8.
  • the faces 6 are distributed in two pairs of contiguous faces. Each pair of contiguous faces 6 is extended upwards by a first bulge 11 to the horizontal wall 2a, and downwards by a second bulge 11 to the bottom 3.
  • the neck 2 is advantageously more rigid than the rest of the container 1. This result can be obtained by giving said neck 2 a thickness greater than the rest of the container 1.
  • the container 1 can be formed in one piece, in a single material having flexibility.
  • the can 1 can also have two assembled parts: the neck, which can be an insert formed for example of polyethylene, and the rest of the can 1, which can be formed from a more flexible material, for example a rubber mixture butyl and polyethylene.
  • the container 1 is made so that the edges 8 and the bulges 11 of the side wall 4 have a thickness less than the other areas of the wall 4, so as to have greater flexibility.
  • the edges 8 can thus play the role of hinge and allow the faces 6 to enter towards the interior of the container 1.
  • the bulges 11 can themselves enter towards the interior of the container 1, like fingers of gloves.
  • the can 1 is filled with a product to be distributed, of the kind in question.
  • the container 1 is associated with a rigid container cover 20, an embodiment of which is shown in FIGS. 5 and 6.
  • the container cover 20 simply consists of a peripheral side wall comprising four faces, defining a conduit.
  • two faces 31 facing each other are of width less than that of two other faces 32, and each of these two faces 31 of smaller width has a rib 21 arranged longitudinally, substantially in the center of the width of said face, and directed towards the inside of the canister cover.
  • the dimensions of the canister cover 20 are such that the canister 1 can be inserted inside.
  • the container 1 is held in the container cover 20 by any known means.
  • the canister cover 20 can for example be provided with a bottom at a lower end.
  • the device is completed by a conventional distribution means such as for example a manual or other actuated pump, mounted in the neck 2 and communicating with the interior of the container 1.
  • a manual or other actuated pump mounted in the neck 2 and communicating with the interior of the container 1.
  • the deformation of the container 1 is done regularly over its entire height, apart from the spacing imposed on the faces 5 in the immediate vicinity of the neck 2. There is therefore no risk that part of the wall 4 comes obstruct the neck 2 during emptying, which ensures that almost all of the product can be dispensed.
  • the canister cover 20 can for example be provided with a light or a transparent part allowing the user to see the canister 1 which is then itself transparent or translucent, in order to evaluate the quantity of product remaining in said can.
  • each half of the bottle cover 20 has, in section, substantially the shape of a U. From each half of the bottle cover 20, a latching lip 26, 27 directed towards the other half of the bottle cover may extend longitudinally over a certain distance along each longitudinal edge of said half of the canister cover.
  • the half 22 may comprise on each longitudinal edge a lip 26 of thickness substantially half the thickness of the wall, in continuity with the interior surface of the canister cover.
  • the lip 26 may for example comprise a fine rib 29 directed towards the outside of the canister cover.
  • the half 23 may comprise on each longitudinal edge a complementary lip 27, of the same thickness as the lip 26, in continuity with the external surface of the canister cover, said lip 27 having a groove 28 directed towards the inside of the canister cover. so that the lip 27 comes to cover the lip 26 and the rib 29 snaps into the groove 28 when the two halves of the canister are joined.
  • each half 22 or 23 ends in an upper end with a half neck, 33 or 34 respectively, these two half-necks coming to grip the neck 2 of the can when the two halves of the can cover 20 are united around a can 1.
  • each half 22 or 23 may have a lower end provided with 'a hinge 25 connecting said half to a bottom 24.
  • the hinge 25 may simply be an area of small thickness of material.
  • the faces 32 of the side wall of the canister cover then extend at their lower end by a return defining a housing 45 in which the bottom 24 can be placed.
  • the canister cover 20 opens and closes by rotation of the two halves 22 and 23 around the hinges 25 which each connect them to the bottom 24.
  • FIG 12 there is shown a section of a device according to the invention, comprising a canister 20 separable into two halves 22, 23 as described above and comprising a neck 33, 34 which encloses the neck 2 from the can.
  • the flexible container 1 defines an interior volume 56 which is filled with product to be dispensed, then a pump 52 is mounted in the neck 2, by any known means, for example by crimping a metal cap 55 on the neck 2 of the container and the neck 33, 34 of the canister cover.
  • the metal capsule 55 then locks the assembly of the two halves 22 and 23 of the canister cover 20.
  • the pump 52 has an inlet end 54 which communicates with the interior volume 56 of the canister 1, and a hollow sliding push rod 53 which allows both the actuation of the pump 52 and the emission of the product at the outlet of the pump.
  • the push rod 53 is generally capped with a push end piece 50, which itself can be provided with a protective plug 51 outside of periods of use.
  • the canister cover 20 can conventionally be produced by molding.
  • the can 1 can be produced by a blowing process, from a can preform 40 shown in FIGS. 1 and 2.
  • the can preform 40 can have a generally hollow cylindrical shape and extend between a closed end 43 and an open end 44.
  • the preform 40 can be formed by any known method, for example by injection molding, in which case it is internally cylindrical over its entire height.
  • the preform 40 may be formed in one piece, or it may comprise an attached neck 2, possibly formed from a more rigid material.
  • the neck 2 may possibly be narrower than the rest of the preform 40.
  • the open end 44 of the preform 40 may have any external shape, for example a thread or one or more collars.
  • the preform 40 is heated, then it is introduced into a mold having the shape of the container 1 to be formed.
  • the preform 40 can also be formed during its introduction into the mold, using the so-called extrusion-blowing method: in this case, a tube of molten plastic is extruded, then one end of said tube is pinched by a part of the mold so as to close it by welding. As before, the preform 40 then extends between an open end 44 and a closed end 43.
  • the preform 40 is formed, when said preform 40 is in the mold and is at a temperature such that it is malleable, a pressurized gas, possibly hot, is introduced into said preform 40 by its end. opened.
  • a pressurized gas possibly hot
  • the wall of the container 1 becomes thinner the more the blowing forces him to move away from his initial position.
  • the edges 8 and the bulges 11 being the parts of the container 1 furthest from the preform 40, these are the thinnest parts of the container 1 and therefore the most flexible.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Packages (AREA)
  • Tubes (AREA)
  • Closures For Containers (AREA)

Description

La présente invention concerne un dispositif destiné à contenir un produit liquide ou pâteux à distribuer sans reprise d'air, et son procédé de fabrication. Le produit en question peut être un produit alimentaire, un produit d'hygiène, un produit cosmétique, ou tout autre produit qui doit être stocké à l'abri de l'air. Un tel produit peut être distribué, avec ou sans pulvérisation, à l'aide d'une pompe manuelle ou par un autre dispositif qui ne fasse pas entrer d'air dans un récipient contenant le produit à distribuer. Le récipient doit donc être déformable de façon que son volume intérieur soit toujours égal au volume de produit restant à distribuer.The present invention relates to a device intended to contain a liquid or pasty product to be dispensed without air intake, and to its manufacturing process. The product in question can be a food product, a hygiene product, a cosmetic product, or any other product which must be stored away from air. Such a product can be dispensed, with or without spraying, using a manual pump or by another device which does not allow air to enter a container containing the product to be dispensed. The container must therefore be deformable so that its internal volume is always equal to the volume of product remaining to be dispensed.

De nombreux récipients déformables sont connus dans l'état de l'art, tel que le brevetUS-A-3,118,572 et la demande de brevet français VALOIS n°. 2 647 418. Cette dernière décrit un distributeur doseur de produits liquides ou pâteux, fonctionnant sans reprise d'air, dans lequel le produit à distribuer est contenu dans une poche souple, réalisée par exemple en élastomère, elle-même contenue dans un conteneur rigide sur lequel est fixé un dispositif distributeur tel qu'une pompe à actionnement manuel.Many deformable containers are known in the state of the art, such as the patent US-A-3,118,572 and the French patent application VALOIS n °. 2,647,418. The latter describes a metering dispenser for liquid or pasty products, operating without air intake, in which the product to be dispensed is contained in a flexible bag, made for example of elastomer, itself contained in a rigid container. on which is fixed a dispensing device such as a manually actuated pump.

Un problème qui peut se poser avec une poche souple quelconque est qu'elle peut se déformer en faisant de nombreux plis, et que sa paroi peut venir obstruer l'orifice de sortie du produit, avant que tout le produit qu'elle contient ne soit consommé.A problem which can arise with any flexible bag is that it can deform by making many folds, and that its wall can come to obstruct the outlet for the product, before all the product it contains is consumed.

Le but de la présente invention est d'éviter cet inconvénient.The object of the present invention is to avoid this drawback.

La présente invention a donc pour objet un dispositif destiné à contenir un produit liquide ou pâteux à distribuer sans reprise d'air, constitué par la collaboration d'un bidon contenant le produit à distribuer et d'un cache-bidon, ledit bidon étant inséré dans le cache-bidon et ledit cache-bidon étant constitué d'une paroi latérale périphérique s'étendant entre un fond et un étranglement à travers lequel débouche un goulot, caractérisé en ce que ledit cache-bidon est doté d'au moins deux nervures longitudinales se faisant face, lesdites nervures obligeant la paroi latérale, le fond et l'étranglement du bidon à se plier à la façon d'un accordéon.The present invention therefore relates to a device intended to contain a liquid or pasty product to be dispensed without air intake, constituted by the collaboration of a container containing the product to be dispensed and a container cover, said container being inserted. in the canister cover and said canister cover consisting of a peripheral side wall extending between a bottom and a throttle through which opens a neck, characterized in that said canister cover has at least two ribs longitudinal facing each other, said ribs forcing the side wall, the bottom and the throat of the container to bend in the manner of an accordion.

Avantageusement, la présente invention peut comporter un tel dispositif, dans lequel la paroi latérale du bidon comporte six faces séparées par des arêtes, dont deux premières faces opposées sensiblement parallèles sont de largeur supérieure à celle des autres faces, les deux premières faces étant de largeur sensiblement identique, les autres faces étant toutes les quatre sensiblement de même largeur et réparties en deux paires séparant chacune les deux premières faces, chaque paire de faces de moindre largeur étant prolongée par un premier renflement jusqu'à l'étranglement du bidon et par un deuxième renflement jusqu'au fond du bidon, et dans lequel les arêtes et les renflements sont d'épaisseur plus fine que les autres éléments du bidon, et donc sont plus souples, de sorte que les nervures du cache-bidon peuvent faire rentrer les faces de moindre largeur vers l'intérieur du bidon, les arêtes jouant le rôle de charnière. Au fur et à mesure de la consommation du produit contenu dans le bidon, les deux faces plus larges se rapprochent l'une de l'autre en restant sensiblement parallèles, tandis que les autres faces continuent à rentrer vers l'intérieur du bidon, en tendant à devenir parallèles auxdites faces plus larges, et que le fond et la paroi horizontale du bidon continuent à se plisser, sauf au voisinage du goulot rigide où les premières faces plus larges restent écartées l'une de l'autre d'une certaine distance, de sorte que la quasi-totalité du produit contenu dans le bidon peut être distribuée, sans que les parois du bidon ne risquent d'obturer prématurément le goulot.Advantageously, the present invention may include such a device, in which the side wall of the container has six faces separated by edges, two opposite substantially parallel first faces of greater width than the other faces, the first two faces being of width substantially identical, the other faces all being substantially the same width and distributed in two pairs each separating the first two faces, each pair of lesser width faces being extended by a first bulge up to the constriction of the container and by a second bulge to the bottom of the container, and in which the edges and the bulges are of finer thickness than the other elements of the canister, and therefore are more flexible, so that the ribs of the canister cover can cause the faces of smaller width to enter the interior of the canister, the edges playing the role of hinge. As the product contained in the container is consumed, the two wider faces approach each other, remaining substantially parallel, while the other faces continue to return towards the interior of the container, tending to become parallel to said wider faces, and the bottom and the horizontal wall of the container continue to crease, except in the vicinity of the rigid neck where the first wider faces remain spaced apart from each other by a certain distance , so that almost all of the product contained in the container can be dispensed, without the walls of the container being able to close the neck prematurely.

Avantageusement, le dispositif peut être complété par une pompe de distribution, la déformation du bidon provoquée par les nervures lors de sa mise en place dans le cache-bidon entraînant une surpression suffisante du produit à distribuer pour en refouler dans la pompe, en amorçant ladite pompe.Advantageously, the device can be supplemented by a dispensing pump, the deformation of the can caused by the ribs when it is placed in the can cover causing sufficient overpressure of the product to be dispensed to discharge into the pump, by priming said pump.

Dans une forme particulière de réalisation de l'invention, le cache-bidon peut comporter un fond et un goulot destiné à enserrer le goulot du bidon, ledit cache-bidon pouvant se séparer longitudinalement en deux moitiés afin de pouvoir placer le bidon à l'intérieur du cache-bidon. Eventuellement, les deux moitiés du cache-bidon sont fixées l'une à l'autre au moyen de lèvres, se recouvrant lorsque les deux moitiés du cache-bidon sont réunies, lesdites lèvres étant munies d'un moyen d'encliquetage. Le moyen d'encliquetage peut comprendre une rainure réalisée sur la ou les lèvre(s) d'une des moitiés du cache-bidon, et une nervure complémentaire réalisée sur la ou les lèvre(s) de l'autre moitié du cache-bidon. Avantageusement, le fond du cache-bidon ne se sépare pas en deux moitiés, et il est relié par une charnière à chaque moitié dudit cache-bidon.In a particular embodiment of the invention, the canister cover may include a bottom and a neck intended to grip the neck of the canister, said canister cover being able to separate longitudinally into two halves in order to be able to place the canister inside of the bottle cage. Optionally, the two halves of the canister are fixed to each other by means of lips, overlapping when the two halves of the canister are joined, said lips being provided with a latching means. The latching means may include a groove formed on the lip (s) of one of the halves of the canister, and a complementary rib produced on the lip (s) of the other half of the canister . Advantageously, the bottom of the canister does not separate into two halves, and it is connected by a hinge to each half of said canister.

La présente invention a aussi pour objet un procédé de fabrication du dispositif selon l'invention, dans lequel la formation du bidon comprend au moins l'étape de souffler un gaz comprimé dans une préforme creuse ayant une extrémité ouverte et portée à une température suffisante pour être déformable, ladite préforme étant disposée dans un moule ayant la forme du bidon à réaliser, de sorte que ladite préforme se dilate jusqu'à épouser la forme du moule, caractérisé en ce que les parties de la préforme correspondant aux arêtes et aux renflements du bidon final sont celles qui s'éloignent le plus de leur position initiale au cours de l'étape de soufflage, de sorte que les arêtes et les renflements sont les parties les plus fines et les plus souples du bidon.The present invention also relates to a method of manufacturing the device according to the invention, in which the formation of the container comprises at least the step of blowing a compressed gas in a hollow preform having an open end and brought to a temperature sufficient for be deformable, said preform being arranged in a mold having the shape of the can to be produced, so that said preform expands until it matches the shape of the mold, characterized in that the parts of the preform corresponding to the edges and bulges of the final container are those which move the most from their initial position during the blowing step, so that the edges and bulges are the thinnest and most flexible parts of the container.

D'autres caractéristiques et avantages de l'invention apparaîtront dans la description suivante de divers exemples de réalisation de l'invention, donnés à titre non limitatif, en regard des dessins joints, et qui fera bien comprendre comment l'invention peut être réalisée.Other characteristics and advantages of the invention will appear in the following description of various embodiments of the invention, given without limitation, with reference to the accompanying drawings, and which will make it clear how the invention can be implemented.

Sur les dessins,

  • la figure 1 est une vue de côté d'un exemple de préforme de bidon selon l'invention, avant mise en forme ;
  • la figure 2 est une vue de dessus de la préforme de bidon de la figure 1 ;
  • la figure 3 est une vue de côté d'un bidon obtenu à partir de la préforme de la figure 1;
  • la figure 4 est une vue de dessus du bidon de la figure 3 ;
  • la figure 5 est une vue de dessus d'un exemple de cache-bidon selon l'invention ;
  • la figure 6 est une vue en coupe selon la ligue VI-VI du cache-bidon de la figure 5 ;
  • la figure 7 est une vue de dessus en coupe du cache-bidon de la figure 6 avec à l'intérieur le bidon de la figure 3, plein de produit à distribuer ;
  • la figure 8 est une vue analogue à celle de la figure 7, mais après consommation d'une partie du produit à distribuer ;
  • la figure 9 est une vue de dessus en coupe d'un cache-bidon séparable en deux moitiés ;
  • la figure 10 est une agrandissement d'une partie de la figure 9 ;
  • la figure 11 est une vue fragmentaire en coupe partielle selon la ligne XI-XI du cache-bidon de la figure 9; et
  • la figure 12 est une vue en coupe d'un dispositif selon l'invention comportant une pompe de distribution.
In the drawings,
  • Figure 1 is a side view of an example of canister preform according to the invention, before shaping;
  • Figure 2 is a top view of the container preform of Figure 1;
  • Figure 3 is a side view of a container obtained from the preform of Figure 1;
  • Figure 4 is a top view of the container of Figure 3;
  • FIG. 5 is a top view of an example of a bottle cover according to the invention;
  • Figure 6 is a sectional view along league VI-VI of the bottle cover of Figure 5;
  • Figure 7 is a top sectional view of the container cover of Figure 6 with inside the container of Figure 3, full of product to be dispensed;
  • Figure 8 is a view similar to that of Figure 7, but after consumption of part of the product to be dispensed;
  • Figure 9 is a top sectional view of a canister separable into two halves;
  • Figure 10 is an enlargement of part of Figure 9;
  • Figure 11 is a fragmentary view in partial section along the line XI-XI of the bottle cover of Figure 9; and
  • Figure 12 is a sectional view of a device according to the invention comprising a distribution pump.

Les figures 3 et 4 représentent une forme de réalisation d'un bidon 1 utilisé dans le dispositif de l'invention. Le bidon 1 comprend un fond 3, à partir duquel s'étend verticalement vers le haut une paroi latérale 4 périphérique, prolongée en une extrémité supérieure par une paroi horizontale 2a formant un étranglement, au travers de laquelle débouche un goulot 2, sensiblement au centre de ladite paroi 2a. Le bidon 1 admet deux plans de symétrie verticaux perpendiculaires, reférencés 41 et 42 sur la figure 4.Figures 3 and 4 show an embodiment of a container 1 used in the device of the invention. The container 1 comprises a bottom 3, from which extends vertically upwards a peripheral side wall 4, extended at an upper end by a horizontal wall 2a forming a constriction, through which opens a neck 2, substantially in the center of said wall 2a. The container 1 has two perpendicular vertical planes of symmetry, referenced 41 and 42 in FIG. 4.

La paroi latérale 4 comporte par exemple six faces, parmi lesquelles deux faces 5 opposées peuvent être de largeur supérieure aux autres faces 6. Les deux faces 5 sont de largeur identique, et les faces 6 sont toutes les quatre de même largeur. Les faces contigües sont jointes par des arêtes 8 arrondies ou non. Les faces 6 sont réparties en deux paires de faces contigües. Chaque paire de faces 6 contigües se prolonge vers le haut par un premier renflement 11 jusqu'à la paroi horizontale 2a, et vers le bas par un second renflement 11 jusqu'au fond 3.The side wall 4 comprises for example six faces, among which two opposite faces 5 can be of width greater than the other faces 6. The two faces 5 are of identical width, and the faces 6 are all four of the same width. The contiguous faces are joined by rounded or non-rounded edges 8. The faces 6 are distributed in two pairs of contiguous faces. Each pair of contiguous faces 6 is extended upwards by a first bulge 11 to the horizontal wall 2a, and downwards by a second bulge 11 to the bottom 3.

Le goulot 2 est avantageusement plus rigide que le reste du bidon 1. Ce résultat peut être obtenu en donnant audit goulot 2 une épaisseur supérieure au reste du bidon 1. Le bidon 1 peut être formé d'une seule pièce, en une seule matière présentant une certaine souplesse. Eventuellement, le bidon 1 peut aussi comporter deux pièces asemblées : le goulot, qui peut être une pièce rapportée formée par exemple en polyéthylène, et le reste du bidon 1, qui peut être formé dans une matière plus souple, par exemple un mélange de caoutchouc butyle et de polyéthylène.The neck 2 is advantageously more rigid than the rest of the container 1. This result can be obtained by giving said neck 2 a thickness greater than the rest of the container 1. The container 1 can be formed in one piece, in a single material having flexibility. Optionally, the can 1 can also have two assembled parts: the neck, which can be an insert formed for example of polyethylene, and the rest of the can 1, which can be formed from a more flexible material, for example a rubber mixture butyl and polyethylene.

En outre, le bidon 1 est réalisé de telle sorte que les arêtes 8 et les renflements 11 de la paroi latérale 4 présentent une épaisseur inférieure aux autres zones de la paroi 4, de façon à présenter une souplesse supérieure. Les arêtes 8 peuvent ainsi jouer le rôle de charnière et permettent aux faces 6 de rentrer vers l'intérieur du bidon 1. Les renflements 11 peuvent eux-mêmes rentrer vers l'intérieur du bidon 1, comme des doigts de gants.In addition, the container 1 is made so that the edges 8 and the bulges 11 of the side wall 4 have a thickness less than the other areas of the wall 4, so as to have greater flexibility. The edges 8 can thus play the role of hinge and allow the faces 6 to enter towards the interior of the container 1. The bulges 11 can themselves enter towards the interior of the container 1, like fingers of gloves.

Le bidon 1 est rempli d'un produit à distribuer, du genre en question.The can 1 is filled with a product to be distributed, of the kind in question.

Le bidon 1 est associé à un cache-bidon 20 rigide, dont une forme de réalisation est représentée sur les figures 5 et 6. Dans cette forme de réalisation, le cache-bidon 20 consiste simplement en une paroi latérale périphérique comportant quatre faces, définissant un conduit. Avantageusement, deux faces 31 en regard l'une de l'autre sont de largeur inférieure à celle de deux autres faces 32, et chacune de ces deux faces 31 de largeur inférieure comporte une nervure 21 disposée longitudinalement, sensiblement au centre de la largeur de ladite face, et dirigée vers l'intérieur du cache-bidon. Les dimensions du cache-bidon 20 sont telles que le bidon 1 puisse être inséré à l'intérieur.The container 1 is associated with a rigid container cover 20, an embodiment of which is shown in FIGS. 5 and 6. In this embodiment, the container cover 20 simply consists of a peripheral side wall comprising four faces, defining a conduit. Advantageously, two faces 31 facing each other are of width less than that of two other faces 32, and each of these two faces 31 of smaller width has a rib 21 arranged longitudinally, substantially in the center of the width of said face, and directed towards the inside of the canister cover. The dimensions of the canister cover 20 are such that the canister 1 can be inserted inside.

Lorsque le bidon 1 est inséré à l'intérieur du cache-bidon 20, comme représenté à la figure 7, les renflements souples 11 se retournent comme des doigts de gants pour laisser le passage aux nervures 21, et les faces 6 sont repoussées vers l'intérieur du bidon 1.When the container 1 is inserted inside the container cover 20, as shown in FIG. 7, the flexible bulges 11 turn over like glove fingers to allow passage to the ribs 21, and the faces 6 are pushed back towards the inside the container 1.

Le bidon 1 est maintenu dans le cache-bidon 20 par tout moyen connu. Le cache-bidon 20 peut par exemple être muni d'un fond en une extrémité inférieure. Le dispositif est complété par un moyen de distribution classique tel que par exemple une pompe à actionnement manuel ou autre, montée dans le goulot 2 et communiquant avec l'intérieur du bidon 1. Lors de l'insertion du bidon 1 dans le cache-bidon 20, la déformation du bidon 1 par les nervures 21 entraîne une surpression du produit contenu dans le bidon 1, de sorte que ledit produit pénètre dans la pompe et l'amorce.The container 1 is held in the container cover 20 by any known means. The canister cover 20 can for example be provided with a bottom at a lower end. The device is completed by a conventional distribution means such as for example a manual or other actuated pump, mounted in the neck 2 and communicating with the interior of the container 1. When inserting the container 1 into the cover 20, the deformation of the container 1 by the ribs 21 results in a overpressure of the product contained in the can 1, so that said product enters the pump and the primer.

Dans cette position, lorsque le volume de produit contenu dans le bidon diminue, les deux faces 5 se rapprochent l'une de l'autre et les faces 6 rentrent vers l'intérieur du bidon 1 avec les renflements 11, tandis que le fond 3 et la paroi 2a se plissent. De cette façon, le bidon 1 se déforme à la manière d'un accordéon au fur et à mesure qu'il se vide, comme représenté figure 8. Seule une partie supérieure du bidon, située dans une voisinage immédiat du goulot 2 rigide, ne peut pas se replier sur elle-même, puisqu'à cet endroit, les faces 5 sont maintenues écartées par le goulot et la pompe montée dans le goulot.In this position, when the volume of product contained in the container decreases, the two faces 5 approach each other and the faces 6 return towards the interior of the container 1 with the bulges 11, while the bottom 3 and the wall 2a fold. In this way, the container 1 deforms like an accordion as it empties, as shown in FIG. 8. Only an upper part of the container, located in the immediate vicinity of the rigid neck 2, does not cannot fold back on itself, since at this point, the faces 5 are kept apart by the neck and the pump mounted in the neck.

Ainsi, la déformation du bidon 1 se fait de façon régulière sur toute sa hauteur, hormis l'écartement imposé aux faces 5 au voisinage immédiat du goulot 2. Il n'y a donc pas de risque qu'une partie de la paroi 4 vienne obstruer le goulot 2 en cours de vidange, ce qui assure que la quasi-totalité du produit peut être distribuée.Thus, the deformation of the container 1 is done regularly over its entire height, apart from the spacing imposed on the faces 5 in the immediate vicinity of the neck 2. There is therefore no risk that part of the wall 4 comes obstruct the neck 2 during emptying, which ensures that almost all of the product can be dispensed.

D'autres formes particulières de réalisation du cache-bidon 20 peuvent être envisagées. Le cache-bidon peut par exemple être muni d'une lumière ou d'une partie transparente permettant à l'utilisateur de voir le bidon 1 qui est alors lui-même transparent ou translucide, afin d'évaluer la quantité de produit restant dans ledit bidon.Other particular embodiments of the canister cover 20 can be envisaged. The canister cover can for example be provided with a light or a transparent part allowing the user to see the canister 1 which is then itself transparent or translucent, in order to evaluate the quantity of product remaining in said can.

Ou bien, comme représenté aux figures 9 à 11, la paroi latérale du cache-bidon 20 peut se diviser en deux moitiés 22 et 23, la division se faisant sensiblement au centre des faces 32 plus larges de la paroi latérale. Ainsi, chaque moitié du cache-bidon a, en section, sensiblement la forme d'un U. A partir de chaque moitié du cache-bidon 20, une lèvre d'encliquetage 26, 27 dirigée vers l'autre moitié du cache-bidon peut s'étendre longitudinalement sur une certaine distance le long de chaque bord longitudinal de ladite moitié de cache-bidon.Or, as shown in FIGS. 9 to 11, the side wall of the canister cover 20 can be divided into two halves 22 and 23, the division being made substantially at the center of the wider faces 32 of the side wall. Thus, each half of the bottle cover has, in section, substantially the shape of a U. From each half of the bottle cover 20, a latching lip 26, 27 directed towards the other half of the bottle cover may extend longitudinally over a certain distance along each longitudinal edge of said half of the canister cover.

Par exemple, la moitié 22 peut comporter sur chaque bord longitudinal une lèvre 26 d'épaisseur sensiblement moitié de l'épaisseur de la paroi, en continuité avec la surface intérieure du cache-bidon. La lèvre 26 peut comporter par exemple une fine nervure 29 dirigée vers l'extérieur du cache-bidon. La moitié 23 peut comporter sur chaque bord longitudinal une lèvre 27 complémentaire, de même épaisseur que la lèvre 26, en continuité avec la surface extérieure du cache-bidon, ladite lèvre 27 comportant une rainure 28 dirigée vers l'intérieur du cache-bidon de façon que la lèvre 27 vienne recouvrir la lèvre 26 et la nervure 29 vienne s'encliqueter dans la rainure 28 lorsqu'on réunit les deux moitiés du cache-bidon. Chaque moitié 22 ou 23 se termine en une extrémité supérieure par un demi goulot, 33 ou 34 respectivement, ces deux demi-goulots venant enserter le goulot 2 du bidon lorsque les deux moitiés du cache-bidon 20 sont réunies autour d'un bidon 1. En outre, chaque moitié 22 ou 23 peut comporter une extrémité inférieure dotée d'une charnière 25 reliant ladite moitié à un fond 24. La charnière 25 peut simplement être une zone de faible épaisseur de matière. Les faces 32 de la paroi latérale du cache-bidon se prolongent alors en leur extrémité inférieure par un retour délimitant un logement 45 dans lequel le fond 24 peut se placer. Ainsi, le cache-bidon 20 s'ouvre et se ferme par rotation des deux moitiés 22 et 23 autour des charnières 25 qui les relient chacune au fond 24.For example, the half 22 may comprise on each longitudinal edge a lip 26 of thickness substantially half the thickness of the wall, in continuity with the interior surface of the canister cover. The lip 26 may for example comprise a fine rib 29 directed towards the outside of the canister cover. The half 23 may comprise on each longitudinal edge a complementary lip 27, of the same thickness as the lip 26, in continuity with the external surface of the canister cover, said lip 27 having a groove 28 directed towards the inside of the canister cover. so that the lip 27 comes to cover the lip 26 and the rib 29 snaps into the groove 28 when the two halves of the canister are joined. Each half 22 or 23 ends in an upper end with a half neck, 33 or 34 respectively, these two half-necks coming to grip the neck 2 of the can when the two halves of the can cover 20 are united around a can 1. In addition, each half 22 or 23 may have a lower end provided with 'a hinge 25 connecting said half to a bottom 24. The hinge 25 may simply be an area of small thickness of material. The faces 32 of the side wall of the canister cover then extend at their lower end by a return defining a housing 45 in which the bottom 24 can be placed. Thus, the canister cover 20 opens and closes by rotation of the two halves 22 and 23 around the hinges 25 which each connect them to the bottom 24.

Sur la figure 12, on a représenté une coupe d'un dispositif selon l'invention, comportant un cache-bidon 20 séparable en deux moitiés 22, 23 tel que décrit ci-dessus et comportant un goulot 33, 34 qui enserre le goulot 2 du bidon. Le bidon 1 souple définit un volume intérieur 56 qui est rempli de produit à distribuer, puis une pompe 52 est montée dans le goulot 2, par tout moyen connu, par exemple par sertissage d'une capsule métallique 55 sur le goulot 2 du bidon et le goulot 33, 34 du cache-bidon. La capsule métallique 55 verrouille alors l'assemblage des deux moitiés 22 et 23 du cache-bidon 20. La pompe 52 comporte une extrémité d'entrée 54 qui communique avec le volume intérieur 56 du bidon 1, et une tige-poussoir 53 coulissante creuse qui permet à la fois l'actionnement de la pompe 52 et l'émission du produit en sortie de la pompe. La tige-poussoir 53 est généralement coiffée d'un embout-poussoir 50, qui lui-même peut être muni d'un bouchon 51 de protection en dehors des périodes d'utilisation.In Figure 12, there is shown a section of a device according to the invention, comprising a canister 20 separable into two halves 22, 23 as described above and comprising a neck 33, 34 which encloses the neck 2 from the can. The flexible container 1 defines an interior volume 56 which is filled with product to be dispensed, then a pump 52 is mounted in the neck 2, by any known means, for example by crimping a metal cap 55 on the neck 2 of the container and the neck 33, 34 of the canister cover. The metal capsule 55 then locks the assembly of the two halves 22 and 23 of the canister cover 20. The pump 52 has an inlet end 54 which communicates with the interior volume 56 of the canister 1, and a hollow sliding push rod 53 which allows both the actuation of the pump 52 and the emission of the product at the outlet of the pump. The push rod 53 is generally capped with a push end piece 50, which itself can be provided with a protective plug 51 outside of periods of use.

Dans ses différentes formes de réalisation, le cache-bidon 20 peut classiquement être réalisé par moulage. Avantageusement, le bidon 1 peut être réalisé par un procédé de soufflage, à partir d'une préforme de bidon 40 représentée aux figures 1 et 2.In its various embodiments, the canister cover 20 can conventionally be produced by molding. Advantageously, the can 1 can be produced by a blowing process, from a can preform 40 shown in FIGS. 1 and 2.

La préforme 40 de bidon peut avoir une forme générale cylindrique creuse et s'étendre entre une extrémité fermée 43 et une extrémité ouverte 44. La préforme 40 peut être formée par tout procédé connu, par exemple par moulage par injection, auquel cas elle est intérieurement cylindrique sur toute sa hauteur. La préforme 40 peut être formée d'une seule pièce, ou bien elle peut comporter un goulot 2 rapporté, formé éventuellement en un matériau plus rigide. Le goulot 2 peut éventuellement être plus étroit que le reste de la préforme 40. L'extrémité ouverte 44 de la préforme 40 peut avoir une forme extérieur quelconque, par exemple un pas de vis ou un ou plusieurs collets.The can preform 40 can have a generally hollow cylindrical shape and extend between a closed end 43 and an open end 44. The preform 40 can be formed by any known method, for example by injection molding, in which case it is internally cylindrical over its entire height. The preform 40 may be formed in one piece, or it may comprise an attached neck 2, possibly formed from a more rigid material. The neck 2 may possibly be narrower than the rest of the preform 40. The open end 44 of the preform 40 may have any external shape, for example a thread or one or more collars.

Eventuellement, la préforme 40 est réchauffée, puis elle est introduite dans un moule ayant la forme du bidon 1 à former.Optionally, the preform 40 is heated, then it is introduced into a mold having the shape of the container 1 to be formed.

La préforme 40 peut aussi être formée lors de son introduction dans le moule, en utilisant le procédé dit de l'extrusion-soufflage : dans ce cas, un tube de matière plastique en fusion est extrudé, puis une extremité dudit tube est pincée par une partie du moule de façon à la fermer par soudage. Comme précédemment, la préforme 40 s'étend alors entre une extremité ouverte 44 et une extremité fermée 43.The preform 40 can also be formed during its introduction into the mold, using the so-called extrusion-blowing method: in this case, a tube of molten plastic is extruded, then one end of said tube is pinched by a part of the mold so as to close it by welding. As before, the preform 40 then extends between an open end 44 and a closed end 43.

Quelle que soit la façon dont la préforme 40 est formée, lorsque ladite préforme 40 se trouve dans le moule et est à une température telle qu'elle soit maléable, un gaz sous pression, éventuellement chaud, est introduit dans ladite préforme 40 par son extrémité ouverte. Ceci a pour effet de dilater ladite préforme jusqu'à ce qu'elle épouse la forme intérieure de moule en prenant la forme du bidon 1. Au cours de cette opération, la paroi du bidon 1 s'amincit d'autant plus que le soufflage l'oblige à s'éloigner de sa position initiale. Les arêtes 8 et les renflements 11 étant les parties du bidon 1 les plus éloignées de la préforme 40, ce sont les parties les plus minces du bidon 1 et donc les plus souples.However the preform 40 is formed, when said preform 40 is in the mold and is at a temperature such that it is malleable, a pressurized gas, possibly hot, is introduced into said preform 40 by its end. opened. This has the effect of expanding said preform until it conforms to the internal shape of the mold by taking the form of the container 1. During this operation, the wall of the container 1 becomes thinner the more the blowing forces him to move away from his initial position. The edges 8 and the bulges 11 being the parts of the container 1 furthest from the preform 40, these are the thinnest parts of the container 1 and therefore the most flexible.

Claims (9)

  1. A device for containing a liquid or a paste for dispensing without ingress of air, the device comprising a can (1) containing the substance to be dispensed and a can-cover (20), said can (1) being inserted inside the can-cover (20), and said can being constituted by a peripheral side wall (4) extending between a bottom (3) and a top (2a) having a bottleneck (2) opening out therethrough, the device being characterized in that said can-cover (20) is provided with at least two facing longitudinal ribs (21), said ribs obliging the side wall (4), the bottom (3), and the top (2a) of the can to fold concertina-like.
  2. A device according to claim 1, characterized in that the side wall (4) of the can (1) comprises six faces (5, 6) connected to one another by edges (8), with two substantially parallel opposite first faces (5) being of greater width than the other faces (6), the two first faces (5) being of substantially identical width, and the four narrower other faces (6) being of substantially the same, different width and being divided into two pairs each extending between the two first faces (5), each pair of narrower faces (6) extending via a first swelling (11) to the top (2a) of the can (1) and via a second swelling (11) to the bottom (3) of the can, the edges (8) and the swellings (11) being thinner than the other parts of the can (1) and therefore more flexible, such that the ribs (21) of the can carrier (20) are capable of causing the narrower faces (6) to fold towards the inside of the can when the can is inserted in the can carrier (20), with the edges (8) acting as hinges.
  3. A device according to claim 2, characterized in that as the substance contained in the can (1) is consumed, the two larger faces (5) move towards each other while remaining substantially parallel, whereas the narrower other faces (6) continue to fold towards the inside of the can tending to become parallel to said larger faces (5), with the bottom (3) and the top (2a) of the can (1) continuing to fold except in the immediate vicinity of the bottleneck (2) where the wider first faces (5) continues to be held a certain distance apart from each other such that substantially all of the substance contained in the can (1) may be dispensed without the walls of the can running the risk of closing the bottleneck (6) prematurely.
  4. A device according to any preceding claim, characterized in that it further includes a dispensing pump (52) and in that the deformation of the can (1) caused by the ribs (21) when the can is inserted in the can-cover (20) raises the pressure of the substance to be dispensed sufficiently to urge said substance into the pump (52), thereby priming said pump.
  5. A device according to any preceding claim, characterized in that the can-cover (20) includes a bottom (24) and a bottleneck (33, 34) for surrounding the bottleneck (2) of the can (1), said can-cover being separable longitudinally into two halves (22, 23) to enable the can to be placed inside the can-cover.
  6. A device according to claim 5, characterized in that the two halves (22, 23) of the can-cover (20) are fixed to each other by means of lips (26, 27) which overlie one another when the two halves (26, 27) of the can-cover are assembled together, said lips being provided with snap-fastening means (28, 29).
  7. A device according to claim 6, characterized in that the snap-fastening means (28, 29) comprises a groove (28) formed in the lip(s) (27) of one of the halves (23) of the can-cover (20), and a complementary rib (29) formed on the lip(s) (26) of the other half (22) of the can-cover (20).
  8. A device according to any one of claims 5, 6, and 7, characterized in that the bottom (24) of the can-cover (20) is connected via a hinge (25) to each of the halves (26, 27) of said can-cover.
  9. A method of manufacturing a device according to any one of claims 2 to 8, in which can formation includes at least one inflation step of blowing compressed gas into an open-ended hollow preform (40) raised to a temperature that is high enough for it to be deformable, said preform being disposed in a mold having the shape of the can (1) to be made such that said preform (40) expands until it takes up the shape of the mold, the portions of the preform (40) corresponding to the edges (8) and to the swellings (11) of the final can (1) being those portions that move furthest from their initial positions during the inflation step such that the edges (8) and the swellings (11) are the thinnest portions of the can (1) and thus the most flexible portions.
EP91401693A 1990-06-27 1991-06-21 Device for storing liquid or pasty product for dispensing without suction of air, and its manufacture Expired - Lifetime EP0463949B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9008088A FR2663909B1 (en) 1990-06-27 1990-06-27 DEVICE FOR CONTAINING A LIQUID OR PASTY PRODUCT TO BE DISPENSED WITHOUT AIR INTAKE, AND ITS MANUFACTURING METHOD.
FR9008088 1990-06-27

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EP0463949A1 EP0463949A1 (en) 1992-01-02
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EP (1) EP0463949B1 (en)
JP (1) JPH0577844A (en)
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EP0463949A1 (en) 1992-01-02
DE69103694D1 (en) 1994-10-06
DE69103694T2 (en) 1995-05-04
FR2663909B1 (en) 1994-01-28
JPH0577844A (en) 1993-03-30
US5337923A (en) 1994-08-16
FR2663909A1 (en) 1992-01-03

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