EP0026722B1 - Flexible plastic-container - Google Patents
Flexible plastic-container Download PDFInfo
- Publication number
- EP0026722B1 EP0026722B1 EP80420108A EP80420108A EP0026722B1 EP 0026722 B1 EP0026722 B1 EP 0026722B1 EP 80420108 A EP80420108 A EP 80420108A EP 80420108 A EP80420108 A EP 80420108A EP 0026722 B1 EP0026722 B1 EP 0026722B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- neck
- cannula
- nozzle
- junction
- 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
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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
- B65D35/00—Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor
- B65D35/02—Body construction
- B65D35/04—Body construction made in one piece
- B65D35/08—Body construction made in one piece from plastics material
Definitions
- the present invention relates to improvements made to flexible packaging with expulsion system for their content, of the type comprising a tube extended by a nozzle or a cannula.
- Such devices are generally used to inject liquid or pasty products into the human body or that of an animal.
- Devices of the type in question are known, manufactured either in one piece or in two parts and which contain the exact dose of product necessary for an application.
- the first are generally made of plastisol, that is to say obtained in the known manner by autor molding of a heated mandrel which is dipped in a bath of this material.
- the second consist of an extruded tube open at its two ends, one of which is welded to the base of a tip or cannula while the other is closed by pinching once the active product has been placed in the tube.
- All these devices comprise a junction between the tube and the cannula which constitutes a shoulder offering a resistance to crushing greater than that of the rest of the tube.
- Document AU-A-414 085 also discloses a tube, the junction of which with its discharge cannula is produced by means of a collar with two inverted curvatures, but this collar is not irreversibly deformable.
- the improvements which are the subject of the present invention aim to remedy these drawbacks and to allow the production of a device of the type in question which is of a very low cost price and avoids too great a loss of active product.
- the packaging according to the invention is produced by injection under pressure of a plastic material, the junction between the tube and the cannula being produced in the form known per se of a neck with two reverse curvatures while the thickness of this neck is thinner starting from the cannula in the direction of the tube, which allows irreversible deformation of the tube and the neck by crossing an unstable equilibrium position.
- a device according to the invention essentially comprising a flexible packaging 1 and a shutter 2.
- the packaging 1 is produced in one piece by pressure molding of a plastic material such as polyethylene or EVA (ethylene-vinyl-acetate). It comprises a tubular skirt with constant section 3 which is extended by a cannula 4. The tube 3 and the cannula 4 are connected by a neck 5 with two inverted curvatures of the kind encountered on the bottles.
- the free end 4a of the cannula is rounded so as not to hurt when it is put in place, it has a central expulsion opening 4b with calibrated diameter.
- the thickness of the cannula is of the order of 0.7 mm, that of the neck 5 decreasing in the direction of the skirt 3 so as to be connected to the latter whose thickness is of the order of 0 , 4 mm.
- the radii of the neck are chosen so that it constitutes a guard against untimely sinking of the device.
- the connecting radii from the neck to the cannula and to the skirt are 25 and 12 mm respectively.
- the bottom of the skirt 3 is thinned over 4 to 5 mm in height to form a zone 3a facilitating the welding once this skirt has been flattened after filling of the device with the active product (fig. 2) in the inverted position. that is, the cannula oriented downwards and closed.
- the obturator 2 is produced in the form of a cap 2a with a rounded bottom, the internal diameter of which is determined so as to engage freely on the end of the cannula.
- the bottom of the obturator comprises an internal stud 2b, the diameter of which is determined so that this stud penetrates by force into the opening 4b of the cannula 4.
- the stud may include peripheral cords, not shown, capable of increasing the force of retention of the shutter relative to the aforementioned opening.
- the device Once the device is filled with active product, it has a cross-section as shown in fig. 3, that is to say that the bottom of its skirt constitutes a straight edge 3b determined by the welding of the zone 3a after its flattening. The presence of the edge 3b causes the deformation of the entire skirt 3 which then forms just before the neck 5 two symmetrical bulges 3c, 3d.
- the packaging 1 advantageously has a volume corresponding to the exact dose of active product which must be used for an application. For example, this package 1 contains the exact dose of a micro-enema in the form of a gel.
- the entire product is expelled, the loss representing only the volume contained in the cannula.
- the plastic material used for injecting the device according to the invention has a molecular weight high enough to avoid the formation of cracks at the welded edge 3b.
- cannula 4 could be replaced by a nozzle of any shape adapted to the type of spillage of the product contained in the packaging.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Tubes (AREA)
- Packages (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
- Catching Or Destruction (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- External Artificial Organs (AREA)
Abstract
Description
La présente invention est relative à des perfectionnements apportés aux emballages souples à système d'expulsion de leur contenu, du genre comportant un tube prolongé par un embout ou une canule. De tels dispositifs sont généralement utilisés pour injecter des produits liquides ou pâteux dans le corps humain ou dans celui d'un animal.The present invention relates to improvements made to flexible packaging with expulsion system for their content, of the type comprising a tube extended by a nozzle or a cannula. Such devices are generally used to inject liquid or pasty products into the human body or that of an animal.
On connaît des dispositifs du genre en question fabriqués soit d'une seule pièce, soit en deux parties et qui contiennent la dose exacte de produit nécessaire à une application.Devices of the type in question are known, manufactured either in one piece or in two parts and which contain the exact dose of product necessary for an application.
Les premiers sont généralement réalisés en plastisol, c'est-à-dire obtenus à la manière connue par moulage autor d'un mandrin chauffé ' qu'on trempe dans un bain de cette matière.The first are generally made of plastisol, that is to say obtained in the known manner by autor molding of a heated mandrel which is dipped in a bath of this material.
Les seconds consistent en un tube extrudé ouvert à ses deux extrémités, dont l'une est soudée à la base d'un embout ou canule tandis que l'autre est fermée par pincement une fois que le produit actif a été placé dans le tube.The second consist of an extruded tube open at its two ends, one of which is welded to the base of a tip or cannula while the other is closed by pinching once the active product has been placed in the tube.
Tous ces dispositifs comportent une jonction entre le tube et la canule qui constitue un épaulement offrant une résistance à l'écrasement supérieure à celle du reste du tube.All these devices comprise a junction between the tube and the cannula which constitutes a shoulder offering a resistance to crushing greater than that of the rest of the tube.
E,l ce qui concerne les dispositifs réalisés en deux éléments ils nécessitent deux opérations de fabrication de sorte qu'ils ne sont pas économiques. Ce mode de fabrication entraîne également un surcroît de matière au niveau de la jonction des deux éléments dont le coût grève encore plus leur prix de revient.E, l concerning the devices made in two elements they require two manufacturing operations so that they are not economical. This manufacturing method also results in additional material at the junction of the two elements, the cost of which increases their cost even more.
De plus, un autre inconvénient des dispositifs réalisés en deux pièces est l'apparition fréquente d'une fuite de produit à la jonction entre le tube et l'embout de sorte qu'un contrôle de tous les lots de fabrication doit être effectué.In addition, another drawback of the devices produced in two parts is the frequent appearance of a product leak at the junction between the tube and the end piece so that a check of all the manufacturing batches must be carried out.
L'épaulement que l'on rencontre sur tous les dispositifs présente quant à lui un inconvénient majeur dû au fait que toute la matière contenue dans le tube ne peut pas être entièrement expulsée. C'est ainsi que les dispositifs actuelle- lement vendus dans le commerce contiennent environ 30% de produit actif de plus qu'il ne faut du fait qu'une telle quantité reste au niveau de la jonction du tube et de la canule.The shoulder that is encountered on all devices has a major drawback due to the fact that all the material contained in the tube cannot be entirely expelled. Thus, the devices currently sold commercially contain about 30% more active product than is necessary because such an amount remains at the junction of the tube and the cannula.
Enfin en ce qui concerne les tubes en plastisol, ils présentent une souplesse trop importante qui nuit à la bonne rigidité de la canule.Finally, as regards the plastisol tubes, they have too great a flexibility which affects the good rigidity of the cannula.
En dehors des exemples ci-dessus, on a déjà proposé par exemple dans le document FR-A-2 105 590 de réaliser un tube d'une façon telle qu'il puisse s'aplatir lorsqu'il est serré dans la main de l'utilisateur. On a plus particulièrement montré dans ce document que la jonction entre le tube et le bec de déversement pouvait se déformer afin qu'elle s'aplatisse. Les moyens de déformation utilisés, d'une part, ne permettent pas de maintenir la jonction aplatie lorsqu'on cesse d'appuyer sur elle et, d'autre part, consistent en une augmentation notable de l'épaisseur de la jonction en question si bien que le poids et donc le prix de l'article sont élevés.Apart from the above examples, it has already been proposed for example in document FR-A-2 105 590 to produce a tube in such a way that it can flatten when it is tightened in the hand of the 'user. It has more particularly been shown in this document that the junction between the tube and the discharge spout could be deformed so that it becomes flat. The deformation means used, on the one hand, do not make it possible to maintain the flattened junction when one stops pressing on it and, on the other hand, consist in a notable increase in the thickness of the junction in question if although the weight and therefore the price of the item are high.
On connaît aussi par le document AU-A-414 085 un tube dont la jonction avec sa canule de déversement est réalisée au moyen d'un col à deux courbures inversées, mais ce col n'est pas déformable de manière irréversible.Document AU-A-414 085 also discloses a tube, the junction of which with its discharge cannula is produced by means of a collar with two inverted curvatures, but this collar is not irreversibly deformable.
Les perfectionnements qui font l'objet de la présente invention visent à remédier à ces inconvénients et à permettre la réalisation d'un dispositif du genre en question qui soit d'un prix de revient très bas et évite une perte trop importante de produit actif.The improvements which are the subject of the present invention aim to remedy these drawbacks and to allow the production of a device of the type in question which is of a very low cost price and avoids too great a loss of active product.
A cet effet l'emballage suivant l'invention est fabriqué par injection sous pression d'une matière plastique, la jonction entre le tube et la canule étant réalisée sous la forme en soi connue d'un col à deux courbures inverses tandis que l'épaisseur de ce col va en s'amincissant en partant de la canule en direction du tube, ce qui permet la déformation irréversible du tube et du col par franchissement d'une position d'équilibre instable.To this end, the packaging according to the invention is produced by injection under pressure of a plastic material, the junction between the tube and the cannula being produced in the form known per se of a neck with two reverse curvatures while the thickness of this neck is thinner starting from the cannula in the direction of the tube, which allows irreversible deformation of the tube and the neck by crossing an unstable equilibrium position.
Le dessin annexé, donné à titre d'exemple, permettra de mieux comprendre l'invention, les caractéristiques qu'elle présente et les avantages qu'elle est susceptible de procurer.
- Fig. 1 est une coupe longitudinale éclatée à grande échelle d'un dispositif suivant l'invention à l'état non rempli.
- Fig. 2 est une en élévation en grandeur nature d'un dispositif suivant l'invention à l'état rempli.
- Fig. 3 en est une coupe transversale suivant III-III (fig. 2).
- Fig. 4 illustre la manière d'expulser le produit contenu dans ledispositif suivant l'invention.
- Fig. 5 est une vue semblable à celle de fig. 3 mais correspondant à la position d'expulsion du produit.
- Fig. 6 en est une coupe suivant VI-VI (fig. 5).
- Fig. 1 is a longitudinal section exploded on a large scale of a device according to the invention in the unfilled state.
- Fig. 2 is a full-scale elevation of a device according to the invention in the filled state.
- Fig. 3 is a cross section along III-III (fig. 2).
- Fig. 4 illustrates the manner of expelling the product contained in the device according to the invention.
- Fig. 5 is a view similar to that of FIG. 3 but corresponding to the product expulsion position.
- Fig. 6 is a section along VI-VI (fig. 5).
On a représenté en fig. 1 un dispositif suivant l'invention comportant essentiellement un emballage souple 1 et un obturateur 2.There is shown in fig. 1 a device according to the invention essentially comprising a
L'emballage 1 est réalisé d'une pièce par moulage sous pression d'une matière plastique telle que le polyéthylène ou l'EVA (éthylène-vi- nyl-acètate). Il comprend une jupe tubulaire à section constante 3 qui se prolonge par une canule 4. Le tube 3 et la canule 4 sont reliés par un col 5 à deux courbures inversées du genre de celui que l'on rencontre sur les bouteilles. L'extrémité libre 4a de la canule est arrondie de manière à ne pas blesser lorsqu'on la met en place, elle comporte une ouverture centrale d'expulsion 4b à diamètre calibré. L'épaisseur de la canule est de l'ordre de 0,7 mm, celle du col 5 allant en diminuant en direction de la jupe 3 de manière à se raccorder à celle-ci dont l'épaisseur est de l'ordre de 0,4 mm. Les rayons du col sont choisis de manière que celui-ci constitue une garde contre un enfoncement intempestif du dispositif. C'est ainsi que dans un mode de réalisation avantageux les rayons de raccordement du col à la canule et à la jupe sont respectivement de 25 et 12 mm. Le bas de la jupe 3 est aminci sur 4 à 5 mm de hauteur pour constituer une zone 3a facilitant la soudure une fois que cette jupe a été aplatie après remplissage du dispositif par le produit actif (fig.2) en position retournée c'est-à-dire la canule orientée vers le bas et obturée.The
L'obturateur 2 est réalisé sous la forme d'un capuchon 2a à fond arrondi dont le diamètre intérieur est déterminé de manière à s'engager librement sur l'extrémité de la canule. Le fond de l'obturateur comporte un téton intérieur 2b dont le diamètre est déterminé de manière que ce téton pénètre à force dans l'ouverture 4b de la canule 4. Le téton peut comporter des cordons périphériques non représentées, propres à augmenter la force de retenue de l'obturateuf par rapport à l'ouverture précitée.The
Une fois le dispositif rempli de produit actif il se présente en section transversale comme représenté en fig. 3, c'est-à-dire que le bas de sa jupe constitue un bord rectiligne 3b déterminé par la soudure de la zone 3a après son aplatissement. La présence du bord 3b entraîne la déformation de toute la jupe 3 qui forme alors juste avant le col 5 deux renflements symétriques 3c, 3d. On note que l'emballage 1 présente avantageusement un volume correspondant à la dose exacte de produit actif qui doit être utilisée pour une application. Par exemple cet emballage 1 contient la dose exacte d'un micro-lavement se présentant sous forme de gel.Once the device is filled with active product, it has a cross-section as shown in fig. 3, that is to say that the bottom of its skirt constitutes a
Pour expulser le produit il suffit de disposer l'emballage entre le pouce et l'index de l'utilisateur comme illustré en fig.4, ces deux doigts prenant appui respectivement sur les renflements précités. Le déplacement du pouce en direction de l'index provoque la déformation du renflement 3c correspondant qu'on peut ainsément faire plaquer contre la face intérieure de celui 3d (fig. 5).To expel the product, it suffices to place the packaging between the thumb and the index finger of the user as illustrated in FIG. 4, these two fingers bearing respectively on the aforementioned bulges. The displacement of the thumb in the direction of the index finger causes the deformation of the
On choisit pour le polyéthylène servant à la réalisation de l'emballage, une densité ou poids volumique assurant une déformation du renflement 3c assimilé au cloquage, c'est-à-dire qu'à un certain moment ce renflement passe par une position d'équilibre instable et demeure ensuite dans la position concave représentée en fig. 5 sous l'effet de la force initiale exercée dans le sens de la flèche F. On remarque en fig. 6 que le renflement 3c est également complèment en appui contre celui 3d dans le sens transversal.We choose for the polyethylene used to make the packaging, a density or density ensuring a deformation of the
Ainsi lors de l'utilisation du dispositif suivant l'invention, on expulse la totalité du produit qu'il renferme, la perte ne représentant que le volume contenu dans la canule.Thus when using the device according to the invention, the entire product is expelled, the loss representing only the volume contained in the cannula.
On notera enfin que la matière plastique utilisée pour l'injection du dispositif suivant l'invention comporte un poids moléculaire assez élévé pour éviter la formation de criques au niveau du bord soudé 3b.Finally, it will be noted that the plastic material used for injecting the device according to the invention has a molecular weight high enough to avoid the formation of cracks at the
Il doit d'ailleurs être entendu que la description qui précède n'a été donnée qu'à titre d'exemple et qu'elle ne limite nullement le domaine de l'invention dont on ne sortirait pas en remplaçant les détails d'exécution décrits par tous autres équivalents. En particulier la canule 4 pourrait être remplacée par un embout de forme quelconque adapté au genre de déversement du produit contenu dans l'emballage.It should moreover be understood that the above description has been given only by way of example and that it in no way limits the field of the invention from which one would not depart by replacing the execution details described by all other equivalents. In particular the
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT80420108T ATE5471T1 (en) | 1979-09-26 | 1980-09-25 | FLEXIBLE PLASTIC PACKAGING. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7924561 | 1979-09-26 | ||
| FR7924561A FR2465650A1 (en) | 1979-09-26 | 1979-09-26 | IMPROVEMENTS IN SOFT PACKAGING WITH A SYSTEM OF EXPULSION OF THEIR CONTENT |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0026722A1 EP0026722A1 (en) | 1981-04-08 |
| EP0026722B1 true EP0026722B1 (en) | 1983-11-30 |
Family
ID=9230236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP80420108A Expired EP0026722B1 (en) | 1979-09-26 | 1980-09-25 | Flexible plastic-container |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4335815A (en) |
| EP (1) | EP0026722B1 (en) |
| AT (1) | ATE5471T1 (en) |
| DE (1) | DE3065781D1 (en) |
| DK (1) | DK156415C (en) |
| FR (1) | FR2465650A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4988016A (en) * | 1989-01-30 | 1991-01-29 | James P. Hawkins | Self-sealing container |
| US5511697A (en) * | 1994-12-19 | 1996-04-30 | The Procter & Gamble Company | Reclosable pouch and method of construction |
| SE508438C2 (en) * | 1995-03-31 | 1998-10-05 | Norden Pac Dev Ab | packaging Containers |
| FR2778639B1 (en) * | 1998-05-18 | 2000-07-28 | Valois Sa | SAMPLE TYPE SPRAYING DEVICE |
| GB2351272B (en) * | 1999-06-23 | 2001-05-02 | Eu Pharma Ltd | Oral medicine dispenser |
| FR2824762B1 (en) * | 2001-05-15 | 2004-02-27 | Oreal | DEVICE FOR SPRAYING A PRODUCT, PARTICULARLY IN THE FORM OF A SAMPLE DOSE OF SAID PRODUCT |
| US20070108227A1 (en) * | 2004-10-20 | 2007-05-17 | Bormioli Rocco & Figlio S.P.A. | Tube made in a single piece by injection of a plastic material |
| DE102010033015B4 (en) * | 2010-07-31 | 2016-03-17 | Gaplast Gmbh | Single-use applicator |
| WO2012091674A1 (en) * | 2010-12-30 | 2012-07-05 | Nestec S.A. | Pressure operated dispensing device |
| HUE054071T2 (en) * | 2016-05-25 | 2021-08-30 | Claudia Mattern | Two-part plastic blank set |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2663461A (en) * | 1949-06-30 | 1953-12-22 | Frederick M Turnbull | Container for pharmaceuticals and the like |
| FR1020783A (en) * | 1950-06-24 | 1953-02-10 | Envelope for the packaging and use of pasty or liquid products, in particular suppositories | |
| US2808926A (en) * | 1954-11-10 | 1957-10-08 | Blair M Drake | Single dose vial assembly of animal semen |
| GB990473A (en) * | 1960-09-23 | 1965-04-28 | Merck & Co Inc | Squeezable containers |
| US3221939A (en) * | 1962-01-08 | 1965-12-07 | Barnes Hind International Inc | Disposable dispensers |
| US3353714A (en) * | 1965-11-10 | 1967-11-21 | Rexall Drug Chemical | Collapsible flexible plastic container tube |
| AU414085B2 (en) * | 1967-01-31 | 1971-06-14 | M. S. F. R. C. S. F. RA. C. S. and IAN HOWARD MUDIE ROEGER NOEL JAMES BONNIN | An improved dispensing container |
| GB1275903A (en) * | 1968-08-27 | 1972-06-01 | Smith & Nephew | Dispenser |
| US3635376A (en) * | 1970-06-05 | 1972-01-18 | Hellstrom Harold R | Quick-open flexible package |
| FR2105590A5 (en) * | 1970-09-10 | 1972-04-28 | Strazdins Atis | |
| US3993223A (en) * | 1974-07-25 | 1976-11-23 | American Home Products Corporation | Dispensing container |
-
1979
- 1979-09-26 FR FR7924561A patent/FR2465650A1/en active Granted
-
1980
- 1980-09-23 US US06/190,002 patent/US4335815A/en not_active Expired - Lifetime
- 1980-09-25 DE DE8080420108T patent/DE3065781D1/en not_active Expired
- 1980-09-25 EP EP80420108A patent/EP0026722B1/en not_active Expired
- 1980-09-25 AT AT80420108T patent/ATE5471T1/en not_active IP Right Cessation
- 1980-09-25 DK DK404880A patent/DK156415C/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP0026722A1 (en) | 1981-04-08 |
| FR2465650B1 (en) | 1983-06-10 |
| DK156415B (en) | 1989-08-21 |
| ATE5471T1 (en) | 1983-12-15 |
| DK156415C (en) | 1990-01-22 |
| DE3065781D1 (en) | 1984-01-05 |
| FR2465650A1 (en) | 1981-03-27 |
| DK404880A (en) | 1981-03-27 |
| US4335815A (en) | 1982-06-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Designated state(s): AT BE CH DE GB IT LI LU NL SE |
|
| 17P | Request for examination filed |
Effective date: 19810506 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: LABORATOIRES LABAZ SOCIETE DITE: Owner name: SOCIETE NOUVELLE DE BOUCHONS PLASTIQUES S.N.B.P. |
|
| ITF | It: translation for a ep patent filed |
Owner name: SOCIETA' ITALIANA BREVETTI S.P.A. |
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