EP0330528B1 - Deformable tubular container and process for making it in one piece - Google Patents

Deformable tubular container and process for making it in one piece Download PDF

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Publication number
EP0330528B1
EP0330528B1 EP89400193A EP89400193A EP0330528B1 EP 0330528 B1 EP0330528 B1 EP 0330528B1 EP 89400193 A EP89400193 A EP 89400193A EP 89400193 A EP89400193 A EP 89400193A EP 0330528 B1 EP0330528 B1 EP 0330528B1
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EP
European Patent Office
Prior art keywords
wall
container
bottom portion
container according
core
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
EP89400193A
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German (de)
French (fr)
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EP0330528A1 (en
Inventor
Patrick Simon
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Individual
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Individual
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Priority to AT89400193T priority Critical patent/ATE66196T1/en
Publication of EP0330528A1 publication Critical patent/EP0330528A1/en
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    • 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
    • B65D35/22—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 with two or more compartments

Definitions

  • the present invention relates to tubular containers made of plastic or similar tubes.
  • Known containers are often made from a continuous extruded tube which is then cut to length and to which is adapted on one side a head forming a shoulder as well as a screw ring or a neck on which is then placed places a closure cap.
  • the container thus formed has an open bottom to allow its filling and the bottom is finally closed by welding or crimping by any means known in the art and suitable for the material of said container.
  • the head and the body of the bottle are made in one piece by injection into a mold and the container is as previously filled before closing its bottom.
  • the present invention relates to tubular containers making it possible to contain at least two products without these being able to be mixed before their use and this without complicating the manufacture of the container produced. It is defined in the claims.
  • Document FR-A-2260506 which can be considered as the closest prior art document (preamble to rev. 1), comprises a complex stopper which requires differentiation of the fingers 10, 11 by a different color.
  • the prior art does not show the existence of means for blocking the ends of the core to prevent its deformation at the time of injection, these means blocking being constituted by pins ensuring the formation of openings and engaging in blocking slots provided in the bottom of the mold.
  • the known documents do not show that, to facilitate demolding, the slot in the core cooperating with the mold has a progressively increasing thickness towards the locking means.
  • the claimed embodiment makes it possible to fill the compartments delimited by the partition with products which must not be mixed or brought into contact before use, as may be the case for a resin and its hardener in a two-component adhesive, or else treatment products such as cosmetic products, the mixing of which must only be ensured at the time of use.
  • the container illustrated in the drawing comprises a tubular body 1 shown of circular section but which may, if necessary, have another shape, for example oval.
  • the body 1 forms a shoulder 2 and a neck 3 intended to receive a closure plug 4.
  • the connecting means between the neck 3 and the closure plug 4 may be any.
  • the neck 3 is threaded and the closure cap 4 has internally a threaded skirt 5 screwed onto the neck.
  • closure plug could be maintained in a similar manner by a rod or protrusions or any other means known in the art of plugging containers.
  • the body 1 is provided with a partition 6 which is corrugated or otherwise shaped so that its length develops is equal to the internal half-perimeter of the body 1 when the latter is at rest.
  • the partition 6 may only be corrugated over part of its length.
  • the partition 6 is connected to the interior of the body 1 by two rectilinear segments 7 and 8 to then facilitate the deformation of the corrugations 9 when the tubular body must be closed at its lower part.
  • the partition 6 is made so as to extend to the top of the neck 3 which is closed by a plate 10 in which are provided openings 11 and 12 opening on either side of the partition 6 in compartments 13 and 14 that it delimits inside the body 1.
  • the body 1 and partition 6 assembly is preferably made of thermoplastic resin by injection and care is taken to shape the mold so that the partition 6 does not have a sharp angle but instead delimits a series of rounded elements including in its area joining the rectilinear segments.
  • the compartments 13 and 14 are filled with the products which they must contain before the bottom 15 of the tubular body 1 is closed.
  • the bottom 15 is closed by the usual means of the technique, that is to say that this bottom is clamped and heated to ensure a tight closure, the bottom then becomes linear as illustrated in phantom 4 in FIG. 2 and according to the section appearing in FIG. 4.
  • the closure can also be ensured by crimping the bottom 15.
  • the closing operation by clamping and heating or crimping the bottom 15 causes the partition to be flattened and sandwiched between the two corresponding parts of the body 1 which are themselves flattened as illustrated in FIG. 4.
  • the amplitude of the undulations 9 can decrease from the bottom 15 to the neck 3.
  • the openings 11 and 12 are closed by protuberances or other specific means provided in the closure cap, these means being designed so that they always correspond one to the opening 11, the other to the opening 12.
  • the container described in the foregoing is particularly suitable for manufacture by injection molding of a plastic material.
  • the mold must be provided to cooperate with a split core over its entire height to allow the formation of the partition 6. It is important for this purpose that the mold is provided with means for blocking the ends. of the nucleus to avoid its deformation at the time of injection.
  • the blocking means advantageously consist of pins ensuring the formation of the openings 11, 12 and engaging in blocking slots provided in the bottom of the mold.
  • the core slot has a gradually increasing thickness towards the locking means.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tubes (AREA)
  • Making Paper Articles (AREA)
  • Packages (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)

Abstract

Deformable tubular container, characterised in that it comprises at least one longitudinal partition (6) delimiting separate compartments (13, 14) inside a tubular body (1), at least the section of the partition (6) at the bottom (15) of the body (1) of the container having a width equal to half of the internal perimeter of the said body (1) and the said partition being rigidly connected in a sealed manner to the wall of the said body (1) by segments (7, 8). <IMAGE>

Description

La présente invention concerne les récipients tubulaires réalisés par des tubes en matière plastique ou analogue.The present invention relates to tubular containers made of plastic or similar tubes.

Les récipients connus sont souvent fabriqués à partir d'un tube extrudé en continu qui est ensuite coupé à longueur et auquel on adapte d'un côté une tête formant un épaulement ainsi qu'une bague à vis ou un goulot sur lequel est ensuite mis en place un bouchon de fermeture.Known containers are often made from a continuous extruded tube which is then cut to length and to which is adapted on one side a head forming a shoulder as well as a screw ring or a neck on which is then placed places a closure cap.

Le récipient ainsi constitué présente un fond ouvert pour permettre son remplissage et le fond est finalement fermé en le soudant ou en le sertissant par un moyen quelconque connu de la technique et adapté à la matière constitutive dudit récipient.The container thus formed has an open bottom to allow its filling and the bottom is finally closed by welding or crimping by any means known in the art and suitable for the material of said container.

Dans d'autres réalisations, la tête et le corps du flacon sont réalisés en une seule pièce par injection dans un moule et le récipient est comme précédemment rempli avant fermeture de son fond.In other embodiments, the head and the body of the bottle are made in one piece by injection into a mold and the container is as previously filled before closing its bottom.

Pour certaines applications, notamment pour certains traitements à partir de produits cosmétiques et aussi pour d'autres produits, par exemple pour des colles ou des peintures à deux constituants, il est nécessaire de prévoir deux récipients et un emballage particulier pour recevoir ces deux récipients afin que les produits de nature différente qu'ils contiennent ne puissent en aucun cas être mis en contact avant leur utilisation.For certain applications, in particular for certain treatments from cosmetic products and also for other products, for example for glues or paints with two components, it is necessary to provide two containers and a special packaging to receive these two containers in order that the products of a different nature which they contain cannot in any case be brought into contact before their use.

La présente invention concerne des récipients tubulaires rendant possible de contenir au moins deux produits sans que ceux-ci puissent être mélangés avant leur emploi et cela sans compliquer la fabrication du récipient réalisé. Elle est définie dans les revendications.The present invention relates to tubular containers making it possible to contain at least two products without these being able to be mixed before their use and this without complicating the manufacture of the container produced. It is defined in the claims.

Le document FR-A-2260506, qui peut être considéré comme le document de la technique antérieure le plus proche (préambule de la rev. 1), comprend un bouchon complexe qui exige une différenciation des doigts 10, 11 par une couleur différente.Document FR-A-2260506, which can be considered as the closest prior art document (preamble to rev. 1), comprises a complex stopper which requires differentiation of the fingers 10, 11 by a different color.

Pour ce qui est de la réalisation de la cloison, et le fait que sa longueur développé soit égale au demi-périmètre interne du corps du récipient, cette caractéristique se retrouve sensiblement dans le document CH-A-619902, mais dans un dispositif différent de celui de la présente invention.With regard to the production of the partition, and the fact that its developed length is equal to the internal half-perimeter of the container body, this characteristic is found substantially in document CH-A-619902, but in a device different from that of the present invention.

En ce qui concerne le procédé pour la réalisation du tube, l'art antérieur (FR-A-1379257) ne montre pas l'existence de moyens de blocage des extrémités du noyau pour éviter sa déformation au moment de l'injection, ces moyens de blocage étant constitués par des tétons assurant la formation des ouvertures et s'engageant dans des lumières de blocage prévues dans le fond du moule. De même, les documents connus ne montrent pas que, pour faciliter le démoulage, la fente du noyau coopérant avec le moule présente une épaisseur progressivement croissante vers les moyens de blocage.As regards the method for producing the tube, the prior art (FR-A-1379257) does not show the existence of means for blocking the ends of the core to prevent its deformation at the time of injection, these means blocking being constituted by pins ensuring the formation of openings and engaging in blocking slots provided in the bottom of the mold. Similarly, the known documents do not show that, to facilitate demolding, the slot in the core cooperating with the mold has a progressively increasing thickness towards the locking means.

La réalisation revendiquée rend possible de remplir les compartiments délimités par la cloison de produits ne devant pas être mélangés ni amenés en contact avant usage, comme cela peut être le cas d'une résine et de son durcisseur dans une colle à deux composants, ou encore de produits de traitement tels que des produits cosmétiques dont le mélange ne doit être assuré qu'au moment de l'utilisation.The claimed embodiment makes it possible to fill the compartments delimited by the partition with products which must not be mixed or brought into contact before use, as may be the case for a resin and its hardener in a two-component adhesive, or else treatment products such as cosmetic products, the mixing of which must only be ensured at the time of use.

Le dessin montre une forme de réalisation de l'objet de l'invention.

  • La fig. 1 est une vue de dessus du récipient tubulaire déformable, objet de l'invention.
  • La fig. 2 est une coupe prise suivant la ligne II-II de la fig. 1, le récipient étant muni d'un bouchon de fermeture.
  • La fig. 3 est une coupe prise suivant la ligne III-III de la fig. 2.
  • La fig. 4 est une coupe prise suivant la ligne IV-IV de la fig. 2.
The drawing shows an embodiment of the subject of the invention.
  • Fig. 1 is a top view of the deformable tubular container, object of the invention.
  • Fig. 2 is a section taken on the line II-II of FIG. 1, the container being provided with a closure cap.
  • Fig. 3 is a section taken along line III-III of FIG. 2.
  • Fig. 4 is a section taken on the line IV-IV of FIG. 2.

Le récipient illustré au dessin comporte un corps tubulaire 1 représenté de section circulaire mais qui peut, le cas échéant, présenter une autre forme, par exemple ovale.The container illustrated in the drawing comprises a tubular body 1 shown of circular section but which may, if necessary, have another shape, for example oval.

A sa partie supérieure, le corps 1 forme un épaulement 2 et un goulot 3 destiné à recevoir un bouchon de fermeture 4. Les moyens de liaison entre le goulot 3 et le bouchon de fermeture 4 peuvent être quelconques.At its upper part, the body 1 forms a shoulder 2 and a neck 3 intended to receive a closure plug 4. The connecting means between the neck 3 and the closure plug 4 may be any.

Dans l'exemple représenté, le goulot 3 est fileté et le bouchon de fermeture 4 comporte intérieurement une jupe taraudée 5 vissée sur la goulot.In the example shown, the neck 3 is threaded and the closure cap 4 has internally a threaded skirt 5 screwed onto the neck.

Le bouchon de fermeture pourrait être maintenu de façon analogue par un jonc ou des protubérances ou tous autres moyens connus dans la technique du bouchage des récipients.The closure plug could be maintained in a similar manner by a rod or protrusions or any other means known in the art of plugging containers.

Intérieurement, le corps 1 est muni d'une cloison 6 qui est ondulée ou autrement conformée pour que sa longueur développe soit égale au demi-périmètre interne du corps 1 lorsque celui-ci est au repos.Internally, the body 1 is provided with a partition 6 which is corrugated or otherwise shaped so that its length develops is equal to the internal half-perimeter of the body 1 when the latter is at rest.

La cloison 6 peut n'être ondulée que sur une partie de sa longueur.The partition 6 may only be corrugated over part of its length.

Il est avantageux, ainsi que l'illustre particulièrement la fig. 3, que la cloison 6 soit reliée à l'intérieur du corps 1 par deux segments rectilignes 7 et 8 pour faciliter ensuite la déformation des ondulations 9 lorsque la corps tubulaire doit être fermé à sa partie inférieure.It is advantageous, as illustrated in particular in FIG. 3, that the partition 6 is connected to the interior of the body 1 by two rectilinear segments 7 and 8 to then facilitate the deformation of the corrugations 9 when the tubular body must be closed at its lower part.

La cloison 6 est réalisée de manière à s'étendre jusqu'au sommet du goulot 3 qui est fermé par un plateau 10 dans lequel sont prévues des ouvertures 11 et 12 ouvrant de part et d'autre de la cloison 6 dans des compartiments 13 et 14 que celle-ci délimite à l'intérieur du corps 1.The partition 6 is made so as to extend to the top of the neck 3 which is closed by a plate 10 in which are provided openings 11 and 12 opening on either side of the partition 6 in compartments 13 and 14 that it delimits inside the body 1.

L'ensemble corps 1 et cloison 6 est fabriqué de préférence en résine thermoplastique par injection et on prend soin de conformer le moule pour que la cloison 6 ne présente pas d'angle vif mais délimite au contraire une suite d'éléments arrondis y compris dans sa zone joignant les segments rectilignes.The body 1 and partition 6 assembly is preferably made of thermoplastic resin by injection and care is taken to shape the mold so that the partition 6 does not have a sharp angle but instead delimits a series of rounded elements including in its area joining the rectilinear segments.

Les compartiments 13 et 14 sont remplis des produits qu'ils doivent contenir avant que le fond 15 du corps tubulaire 1 soit fermé.The compartments 13 and 14 are filled with the products which they must contain before the bottom 15 of the tubular body 1 is closed.

La fermeture du fond 15 est réalisée par les moyens habituels de la technique, c'est-à-dire que ce fond est serré et chauffé pour assurer une fermeture étanche, le fond devient alors linéaire comme illustré en traits mixtes 4 la fig. 2 et selon la coupe apparaissant à la fig. 4. La fermeture peut aussi être assurée par sertissage du fond 15.The bottom 15 is closed by the usual means of the technique, that is to say that this bottom is clamped and heated to ensure a tight closure, the bottom then becomes linear as illustrated in phantom 4 in FIG. 2 and according to the section appearing in FIG. 4. The closure can also be ensured by crimping the bottom 15.

Etant donné que la longueur développée de la cloison 6 est égale au demi-périmètre du corps 1, l'opération de fermeture par serrage et chauffage ou sertissage du fond 15 fait que la cloison est aplatie et prise en sandwich entre les deux parties correspondantes du corps 1 qui sont elles-mêmes aplaties comme illustré par la fig. 4.Since the developed length of the partition 6 is equal to the half-perimeter of the body 1, the closing operation by clamping and heating or crimping the bottom 15 causes the partition to be flattened and sandwiched between the two corresponding parts of the body 1 which are themselves flattened as illustrated in FIG. 4.

On notera que l'amplitude des ondulations 9 peut décroître depuis le fond 15 jusqu'au goulot 3.It will be noted that the amplitude of the undulations 9 can decrease from the bottom 15 to the neck 3.

Les ouvertures 11 et 12 sont fermées par des protubérances ou autres moyens spécifiques prévus dans le bouchon de fermeture, ces moyens étant conçus pour qu'ils correspondent toujours l'un à l'ouverture 11, l'autre à l'ouverture 12.The openings 11 and 12 are closed by protuberances or other specific means provided in the closure cap, these means being designed so that they always correspond one to the opening 11, the other to the opening 12.

Il est ainsi possible de remplir les compartiments 13 et 14 de produits ne devant pas être mélangés ou amenés en contact avant usage, comme cela peut être le cas d'une résine et de son durcisseur ou encore comme cela peut être le cas de produits de traitement tels que des produits cosmétiques dont le mélange ne doit être assuré qu'au moment de l'utilisation.It is thus possible to fill the compartments 13 and 14 with products which should not be mixed or brought into contact before use, as may be the case with a resin and its hardener or even as this may be the case with treatment such as cosmetic products, the mixing of which must only be ensured at the time of use.

Le récipient décrit dans ce qui précède se prête particulièrement à une fabrication par moulage par injection d'une matière plastique. Cependant, pour mettre ce procédé en oeuvre, le moule doit être prévu pour coopérer avec un noyau fendu sur toute sa hauteur pour permettre la formation de la cloison 6. Il est important à cette fin que le moule soit muni de moyens de blocage des extrémités du noyau pour éviter sa déformation au moment de l'injection. Les moyens de blocage sont avantageusement constitués par des tétons assurant la formation des ouvertures 11, 12 et s'engageant dans des lumières de blocage prévues dans le fond du moule. Pour faciliter le démoulage, la fente du noyau présente une épaisseur progressivement croissante vers les moyens de blocage.The container described in the foregoing is particularly suitable for manufacture by injection molding of a plastic material. However, to implement this process, the mold must be provided to cooperate with a split core over its entire height to allow the formation of the partition 6. It is important for this purpose that the mold is provided with means for blocking the ends. of the nucleus to avoid its deformation at the time of injection. The blocking means advantageously consist of pins ensuring the formation of the openings 11, 12 and engaging in blocking slots provided in the bottom of the mold. To facilitate demolding, the core slot has a gradually increasing thickness towards the locking means.

Claims (9)

1. Deformable tubular container comprising at least one longitudinal inner wall (6) defining distinct compartments (13, 14) inside a tubular body (1), at least the portion of the inner wall (6) which is at a level of the bottom portion (15) of the body (1) of the container being provided with longitudinal accordion shaped folds, and this inner wall extending on all the height of the container up to a plate (10) formed by this container at the top of the neck (3) and which has ports (11, 12) provided for communicating with each one of the compartments (13, 14), characterized in that it is provided with a closing plug (4) in a single piece having protrusions or other specific obturating means selectively obturating the ports (11, 12), the developed length of the inner wall (6) being equal to half the interior perimeter of the body (1).
2. Container according to claim 1, characterized in that the inner wall (6) is connected rigidly and in a tight manner to the side wall of the body (1) by rectilinear segments (7, 8).
3. Container according to one of claims 1 or 2, characterized in that the inner wall (6) is welded, crimped or otherly fixed to the inner wall of the body (1) in vicinity of the bottom portion (15) thereof.
4. Container according to one of claims 1 to 3, characterized in that the inside inner wall (6) is formed with corrugations (9).
5. Container according to one of claims 1 to 4, characterized in that the inside inner wall (6) is formed with corrugations (9) extending from the bottom portion (15) on a part only of the inner wall (6).
6. Container according to one of claims 1 to 5, characterized in that the inside inner wall (6) is formed with corrugations (9), the extent of which decreases from the bottom portion (15) up to the neck (3).
7. Container according to one of claims 1 to 6, characterized in that the inner wall (6) has a thickness which decreases from the bottom portion (15) up to the neck.
8. Method for injection manufacturing a container in a single piece in a mould according to the preamble of claim 1, in which there is provided a core which is movable with respect to the mould, said core having at least one longitudinal slit for formation of the inner wall, characterized in that the mould is provided with blockage means of the ends of the core, and in that the thickness of the core slit is increasing towards the blockage means.
9. Method according to claim 8, characterized in that the blockage means are formed by teats providing for formation of the ports (11, 12) and extending inside blocking openings provided in the mould bottom.
EP89400193A 1988-02-23 1989-01-24 Deformable tubular container and process for making it in one piece Expired - Lifetime EP0330528B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89400193T ATE66196T1 (en) 1988-02-23 1989-01-24 DEFORMABLE TUBULAR CONTAINER AND METHOD OF PRODUCTION THEREOF IN ONE PIECE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8802110A FR2627463B1 (en) 1988-02-23 1988-02-23 DEFORMABLE TUBULAR CONTAINER AND ITS ONE PIECE MANUFACTURING METHOD
FR8802110 1988-02-23

Publications (2)

Publication Number Publication Date
EP0330528A1 EP0330528A1 (en) 1989-08-30
EP0330528B1 true EP0330528B1 (en) 1991-08-14

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EP89400193A Expired - Lifetime EP0330528B1 (en) 1988-02-23 1989-01-24 Deformable tubular container and process for making it in one piece

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US (1) US5076464A (en)
EP (1) EP0330528B1 (en)
AT (1) ATE66196T1 (en)
CA (1) CA1327184C (en)
DE (1) DE68900193D1 (en)
ES (1) ES2023721B3 (en)
FR (1) FR2627463B1 (en)

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Also Published As

Publication number Publication date
US5076464A (en) 1991-12-31
ATE66196T1 (en) 1991-08-15
DE68900193D1 (en) 1991-09-19
ES2023721B3 (en) 1992-02-01
FR2627463A1 (en) 1989-08-25
FR2627463B1 (en) 1990-06-15
CA1327184C (en) 1994-02-22
EP0330528A1 (en) 1989-08-30

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