EP2420454A1 - Tamper-proof packaging bag - Google Patents

Tamper-proof packaging bag Download PDF

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Publication number
EP2420454A1
EP2420454A1 EP11176888A EP11176888A EP2420454A1 EP 2420454 A1 EP2420454 A1 EP 2420454A1 EP 11176888 A EP11176888 A EP 11176888A EP 11176888 A EP11176888 A EP 11176888A EP 2420454 A1 EP2420454 A1 EP 2420454A1
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EP
European Patent Office
Prior art keywords
bag
closure
support webs
closure assembly
elements
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Granted
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EP11176888A
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German (de)
French (fr)
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EP2420454B1 (en
Inventor
Emmanuel Eouzan
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S2F Flexico SARL
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S2F Flexico SARL
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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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
    • B65D33/2541—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor characterised by the slide fastener, e.g. adapted to interlock with a sheet between the interlocking members having sections of particular shape

Definitions

  • the present invention relates to the field of packaging bags.
  • the present invention relates to the field of packaging bags comprising opening / closing means, for example and not limited to the form of complementary profiles.
  • closure assemblies known for this purpose comprise two complementary elements, for example of the male / female type or of the velvet / hook type, or else of complementary hooks, carried by respective support webs.
  • FIG. 1 We can see on the figure 1 the two main walls 10, 20 of the bag at the mouth of the latter. We can also see on the figure 1 attached a closure assembly 100 comprising two complementary closure members 110, 120 carried by respective webs 112, 122 respectively fixed on the walls 10 and 20.
  • attachment areas of the support webs 112, 122 on the films 10 and 20 are referenced 114 and 124.
  • the present invention therefore aims to improve the state of the art by proposing new ways to improve the known closure assemblies so that they still more resistant to internal and external stresses of the walls of the bag.
  • a bag comprising a closure assembly comprising two complementary elements carried by respective support webs integral with a film at a localized area remote from the closure element corresponding to allow the articulation of said support webs on the film, said localized areas being disposed on respective opposite ends of the sails respectively on either side of the complementary elements so that one of the articulated sails is directed towards the the interior of the bag while the other articulated sail is directed towards its mouth, characterized in that the support webs have a local extra thickness at their respective localized area arranged so that a free end of the support webs, which is adjacent closure elements is at a distance from the wall when the closure assembly is resting.
  • FIG. 2 to 5 a pouch according to the present invention.
  • the particular conditions of realization of such a bag, in its general structure, will not be described in detail later.
  • the walls 10, 20 of the bag can be the subject of many embodiments.
  • These walls 10, 20 may be mono or multilayer and mono or multi materials. If necessary, it may be a paper support coated with a layer of thermoplastic materials, or a metallized thermoplastic layer.
  • the bag can be made using a single sheet folded on itself and welded on three sides or several sheets, for example two sheets welded together at their edges, preferably along edges connecting the walls. main.
  • a closure assembly 100 comprising at least two complementary closure elements 110, 120.
  • closure assembly 100 In its general structure, such a closure assembly 100 is known per se and will therefore not be described in detail later. It may be closure elements 100 of the complementary hook type ( Figures 2a, 2b ), male Female ( Figures 3 to 5 ), etc.
  • the elements 110, 120 of the closure assembly 100 are each carried by a support web 112, 120 articulated on a wall 10, 20 of the bag.
  • the hinged support webs 112, 122 are made of material, specifically extrusion, on the wall 10 of the bag and connected thereto in zones referenced 114 and 124 respectively.
  • hinged support webs 112, 122 could be carried by auxiliary webs attached to the walls 10, 20 and fixed thereto by any appropriate means, preferably by thermal welding.
  • zones 114, 124 connecting the articulated support webs 112, 122 and the walls 10, 20 of the bag do not coincide with the zones 111, 121 for connecting the foot of the element 110, 120 to the articulated sails 112, 122.
  • the localized zones 114, 124 are disposed on respective opposite ends of the webs 112, 120 (on the internal faces of the walls 10, 20), respectively on either side of the complementary elements 110. , 120.
  • the localized area 114 of one of the hinged sails 112 is adjacent to the mouth of the bag so that the web 112 is directed towards the inside of the bag, while the localized area 124 the other articulated sail 120 is adjacent to the bottom of the bag so that the web 122 is directed towards its mouth.
  • the joints of the localized areas 114, 124 are therefore distant from each other.
  • the support webs 112, 122 pivot at their respective local area 114, 124 and tend to align with one another, that the solicitation of the sails 112, 122 is internal (due to the bulk of the contents of the bag) or external (due to the action of the user on the mouth, etc.).
  • the opening of the bag is thus made more difficult, insofar as the transverse stress exerted by the walls 10, 20 is damped by the articulation of the support webs 112, 122 which initially tend to move the closure elements 110 away. , 120 of the walls 10, 20, then in a second time play a role of hinges and transform the sudden forces by the closure elements 110, 120 in shearing forces.
  • the articulation of the support webs 112, 122 on the wall 10, 20 of the bag is further improved when at least one of the support webs 112, 122 has a local extra thickness 116, 126 at the zone 114, 124 respectively, as illustrated in Figures 2a to 5 arranged so that the free end of the support webs 112, 122, which is adjacent to the closure elements 110, 120, is spaced from the wall 10, 20 when the closure assembly 100 is not stressed and is at rest.
  • the main axis of extension of the support webs 112, 122 is therefore offset with respect to the wall 10, 20.
  • this embodiment of the support webs 112, 122 makes it possible to increase the hinge effect linked to their articulation on the walls 10, 20. In fact, it makes it possible to soften the free part of the support webs 112, 122, in particular in the area of the webs 112, 122 extending between the local extra thickness 116, 126 and the closure element 110, 120, which has the effect of facilitating the elastic deformation of the support webs 112, 122 in this area and thus to dampen even more the effects of an internal or external solicitation.
  • each of the support webs 112, 122 has such a local extra thickness 116, 126, in order to optimize the hinge effect of the closure assembly 100.
  • the shear strength is further improved by the use of a double closure element 100, typically two sets of complementary hooks 110a, 110b, 120a, 120b ( Figures 2a and 2b ), two male-female assemblies 110a, 110b, 120a, 120b ( Figure 3a and 3b or Figures 4a and 4b ), or a set of complementary hooks associated with a male-female closure assembly (not shown in the figures), etc.
  • a double closure element 100 typically two sets of complementary hooks 110a, 110b, 120a, 120b ( Figures 2a and 2b ), two male-female assemblies 110a, 110b, 120a, 120b ( Figure 3a and 3b or Figures 4a and 4b ), or a set of complementary hooks associated with a male-female closure assembly (not shown in the figures), etc.
  • the implementation of complementary hooks 110a, 110b, 120a, 120b allows even more to reinforce the difficulty of opening the bag when the concavity of the hooks is oriented towards the articulation of the associated support web. Indeed, and as can be seen in particular on the figure 2a when the webs are biased apart, for example by an internal pressure, the hooks 110a, 110b, 120a, 120b tend to be placed horizontally, thus reinforcing their mutual engagement: the more the hooks are oriented horizontally, the more they 'hang on to each other.
  • the profiles 110a, 110b, 120a, 120b of the male-female assemblies may further be provided at their ends with hooks so as to further grip the associated section.
  • the male section may have the shape of a V-shaped gutter whose free ends are bent inwards and adapted to engage with outwardly curved hooks arranged on the corresponding free ends of the complementary female profile.
  • the hinged support web 112 carries the male closure member 110.
  • the hinged veil 112 could carry the female member 120.
  • closure assemblies 100 and hinged sails 112, 122 are made of thermoplastic material.
  • closure assembly 100 is associated with a slider facilitating their opening / closing.
  • Such a cursor is known per se in its general structure and will therefore not be described in detail later. It will be recalled simply that in general such a slider comprises a sole that carries two side canopies and a central wall defining between them two channels non-parallel receiving respectively at least the top of one of the two support webs closure assemblies or walls 10, 20, so that in the direction of movement of the cursor, it seeks the closure assemblies 100 respectively to the opening and closing.

Abstract

The bag has a closing assembly with male/female type closing elements supported by support webs (112, 122) connected to one of main films (10, 20) e.g. mono/multi-layer and mono/multi material wall, at localized areas remote from the elements to authorize articulation of the webs on the film, where the elements are provided with male/female hooks (110a, 110b, 120a, 120b). The webs include local reinforcements (116, 126) in the areas, and are arranged such that free end of the webs is provided at distance from the films when the assembly is at rest, where the end is adjacent to the elements.

Description

La présente invention concerne le domaine des sachets d'emballage.The present invention relates to the field of packaging bags.

Plus précisément, la présente invention concerne le domaine des sachets d'emballage comprenant des moyens d'ouverture/fermeture, par exemple et non limitativement sous forme de profilés complémentaires.More specifically, the present invention relates to the field of packaging bags comprising opening / closing means, for example and not limited to the form of complementary profiles.

De nombreux sachets d'emballage et de nombreux ensembles de fermeture à cet effet ont déjà été proposés.Many packaging bags and many closure sets for this purpose have already been proposed.

La plupart des ensembles de fermeture connus à cette fin comprennent deux éléments complémentaires, par exemple de type mâle/femelle ou de type velours/crochets, ou encore de type crochets complémentaires, portés par des voiles support respectifs.Most closure assemblies known for this purpose comprise two complementary elements, for example of the male / female type or of the velvet / hook type, or else of complementary hooks, carried by respective support webs.

On a représenté sur la figure 1 annexée, l'embouchure d'un sac refermable connu de part le document FR-A-2628067 .We have shown on the figure 1 annexed, the mouth of a resealable bag known from the document FR-A-2628067 .

On aperçoit sur la figure 1 les deux parois principales 10, 20 du sachet au niveau de l'embouchure de celui-ci. On aperçoit également sur la figure 1 annexée un ensemble de fermeture 100 comprenant deux éléments de fermeture complémentaires 110, 120 portés par des voiles respectifs 112, 122 fixés respectivement sur les parois 10 et 20.We can see on the figure 1 the two main walls 10, 20 of the bag at the mouth of the latter. We can also see on the figure 1 attached a closure assembly 100 comprising two complementary closure members 110, 120 carried by respective webs 112, 122 respectively fixed on the walls 10 and 20.

Plus précisément, les zones de fixation des voiles support 112, 122 sur les films 10 et 20 sont référencées 114 et 124.More specifically, the attachment areas of the support webs 112, 122 on the films 10 and 20 are referenced 114 and 124.

On notera à l'examen de la figure 1 que la zone 114 de fixation du voile support 112 sur le film 10 n'est pas superposée à l'élément mâle 110 mais décalée par rapport à celui-ci. Il pourrait s'agir en variante d'un décalage de la zone 124 de fixation du voile support 122 sur le film 20 par rapport à l'élément femelle 120. Ainsi, le voile 112 formant support à l'élément mâle 110 est articulé sur le film 10 au niveau de la zone de fixation 114. Comme cela est décrit dans le document FR-A-2628067 , la disposition qui précède permet d'éviter que la pression interne au sachet ne soit appliquée aux éléments de fermeture 110, 120 et tende à séparer ceux-ci. En effet, grâce à la disposition précédemment décrite et représentée sur la figure 1, la séparation des parois 10, 20 du sachet (afin d'ouvrir ce dernier) conduit à un possible pivotement du voile support 110 au niveau de la zone charnière formée par sa fixation, sans risque de séparation des éléments de fermeture 110, 120.It will be noted in the examination of figure 1 that the area 114 for fixing the support web 112 on the film 10 is not superimposed on the male element 110 but shifted relative thereto. It could be an alternative of an offset of the zone 124 for fixing the support web 122 on the film 20 with respect to the female element 120. Thus, the web 112 forming a support for the male element 110 is articulated on the film 10 at the attachment area 114. As described in the document FR-A-2628067 , the preceding arrangement prevents the internal pressure of the bag is applied to the closure elements 110, 120 and tends to separate them. Indeed, thanks to the provision previously described and shown on the figure 1 , the separation of the walls 10, 20 of the bag (to open the latter) leads to a possible pivoting of the support web 110 at the level of the zone hinge formed by its fixing, without risk of separation of the closure elements 110, 120.

Les sachets répondant à la disposition représentée sur la figure 1 ont déjà rendu de grands services. Néanmoins, de tels sachets ne peuvent garantir une fermeture définitive ou du moins rendre la réouverture du sachet suffisamment difficile pour garantir à son usager que son contenu ne puisse pas en ressortir accidentellement à moins de forcer sur l'ensemble de fermeture.The pouches corresponding to the arrangement shown on the figure 1 have already rendered great service. Nevertheless, such bags can not guarantee a definitive closure or at least make the reopening of the bag sufficiently difficult to guarantee to its user that its contents can not come out accidentally unless force on the closure assembly.

La présente invention a donc pour but d'améliorer l'état de la technique en proposant de nouveaux moyens permettant d'améliorer les ensembles de fermeture connus afin qu'ils résistent encore davantage aux sollicitations interne et externes des parois du sachet.The present invention therefore aims to improve the state of the art by proposing new ways to improve the known closure assemblies so that they still more resistant to internal and external stresses of the walls of the bag.

Le but précité est atteint dans le cadre de la présente invention grâce à un sachet comprenant un ensemble de fermeture comprenant deux éléments complémentaires portés par des voiles support respectifs solidaires d'un film au niveau d'une zone localisée distante de l'élément de fermeture correspondant afin d'autoriser l'articulation desdits voiles support sur le film, lesdites zones localisées étant disposées sur des extrémités respectives opposées des voiles respectivement de part et d'autre des éléments complémentaires de sorte que l'un des voiles articulés est dirigé vers l'intérieur du sachet tandis que l'autre voile articulé est dirigé vers son embouchure, caractérisé en ce que les voiles support présentent une surépaisseur locale au niveau de leur zone localisée respective agencée de sorte qu'une extrémité libre des voiles support, qui est adjacente aux éléments de fermeture, se trouve à distance de la paroi lorsque l'ensemble de fermeture est au repos.The above object is achieved in the context of the present invention through a bag comprising a closure assembly comprising two complementary elements carried by respective support webs integral with a film at a localized area remote from the closure element corresponding to allow the articulation of said support webs on the film, said localized areas being disposed on respective opposite ends of the sails respectively on either side of the complementary elements so that one of the articulated sails is directed towards the the interior of the bag while the other articulated sail is directed towards its mouth, characterized in that the support webs have a local extra thickness at their respective localized area arranged so that a free end of the support webs, which is adjacent closure elements is at a distance from the wall when the closure assembly is resting.

Certains aspects préférés mais non limitatifs du sachet sont les suivants :

  • les voiles support sont venu de matière sur une paroi du sachet ;
  • les voiles support et l'ensemble de fermeture sont portés par des voiles support auxiliaires rapportés et fixés sur les parois du sachet ;
  • les deux éléments complémentaires de l'ensemble de fermeture sont de type mâle/femelle ;
  • les deux éléments complémentaires de l'ensemble de fermeture comprennent chacun des crochets complémentaires dont la concavité est orientée vers l'articulation du voile correspondant ;
  • les deux éléments complémentaires de l'ensemble de fermeture comprennent des profilés de fermeture complémentaires mâle-femelle munis chacun au niveau de leurs extrémités libres de crochets adaptés pour coopérer avec le profilé associé ; et
  • l'ensemble de fermeture est double, de sorte que chaque voile comporte deux éléments complémentaires.
Some preferred but non-limiting aspects of the bag are the following:
  • the support sails came from material on a wall of the bag;
  • the support webs and the closure assembly are carried by auxiliary support webs reported and fixed on the walls of the bag;
  • the two complementary elements of the closure assembly are of the male / female type;
  • the two complementary elements of the closure assembly each comprise complementary hooks whose concavity is oriented towards the articulation of the corresponding web;
  • the two complementary elements of the closure assembly comprise complementary male-female closure profiles each provided at their free ends with hooks adapted to cooperate with the associated section; and
  • the closure assembly is double, so that each veil has two complementary elements.

D'autres caractéristiques, buts et avantages de la présente invention apparaîtront à la lecture de la description détaillée qui va suivre, et au regard des dessins annexés donnés à titre d'exemples non limitatifs, et sur lesquels :

  • La figure 1 annexée précédemment décrite représente schématiquement l'embouchure d'un sachet conforme à l'état de la technique,
  • La figue 2a représente une vue partielle en coupe d'une première forme de réalisation d'un sachet conforme à la présente invention, en position fermée et au repos,
  • La figure 2b représente une vue similaire à la figure 2a du même sachet, lorsque les parois sont sollicitées en ouverture,
  • La figure 3a représente une vue partielle en coupe d'une deuxième forme de réalisation d'un sachet conforme à la présente invention, en position fermée,
  • La figure 3b représente une vue similaire à la figure 3a du même sachet, lorsque les parois sont sollicitées en ouverture,
  • La figure 4a représente une vue partielle en coupe d'une troisième forme de réalisation d'un sachet conforme à la présente invention, en position fermée,
  • La figure 4b représente une vue similaire à la figure 4a du même sachet, lorsque les parois sont sollicitées en ouverture, et
  • La figure 5 représente une vue partielle en coupe d'une troisième forme de réalisation d'un sachet conforme à la présente invention, en position fermée.
Other features, objects and advantages of the present invention will appear on reading the detailed description which follows, and with reference to the appended drawings given by way of non-limiting examples, and in which:
  • The figure 1 annexed previously described schematically represents the mouth of a bag according to the state of the art,
  • FIG. 2a shows a partial sectional view of a first embodiment of a bag according to the present invention, in the closed position and at rest,
  • The figure 2b represents a view similar to the figure 2a the same bag, when the walls are solicited opening,
  • The figure 3a represents a partial sectional view of a second embodiment of a bag according to the present invention, in the closed position,
  • The figure 3b represents a view similar to the figure 3a the same bag, when the walls are solicited opening,
  • The figure 4a represents a partial sectional view of a third embodiment of a bag according to the present invention, in the closed position,
  • The figure 4b represents a view similar to the figure 4a the same bag, when the walls are solicited opening, and
  • The figure 5 is a partial sectional view of a third embodiment of a bag according to the present invention, in the closed position.

On a représenté sur les figures 2 à 5, un sachet conforme à la présente invention. On retrouve sur ces figures deux films principaux 10, 20 composant de façon classique en soi un sachet. Les modalités particulières de réalisation d'un tel sachet, dans sa structure générale, ne seront pas décrites dans le détail par la suite.We have shown on Figures 2 to 5 a pouch according to the present invention. In these figures, there are two main films 10, 20 constituting in a conventional manner a sachet. The particular conditions of realization of such a bag, in its general structure, will not be described in detail later.

Les parois 10, 20 du sachet peuvent faire l'objet de nombreux modes de réalisation.The walls 10, 20 of the bag can be the subject of many embodiments.

II s'agit de préférence de parois en matériaux thermoplastiques.It is preferably walls of thermoplastic materials.

Ces parois 10, 20 peuvent être mono ou multicouches et mono ou multi matériaux. Le cas échéant, il peut s'agir d'un support papier revêtu d'une couche de matériaux thermoplastiques, ou encore d'une couche thermoplastique métallisée.These walls 10, 20 may be mono or multilayer and mono or multi materials. If necessary, it may be a paper support coated with a layer of thermoplastic materials, or a metallized thermoplastic layer.

Le sachet peut être réalisé à l'aide d'une feuille unique repliée sur elle-même et soudée sur trois côtés ou de plusieurs feuilles, par exemple deux feuilles soudées entre elles au niveau de leurs bords, de préférence selon des arêtes reliant les parois principales.The bag can be made using a single sheet folded on itself and welded on three sides or several sheets, for example two sheets welded together at their edges, preferably along edges connecting the walls. main.

On aperçoit également sur les figures 2 à 5 annexées, un ensemble de fermeture 100 comprenant au moins deux éléments de fermeture complémentaires 110, 120.We can also see on Figures 2 to 5 appended, a closure assembly 100 comprising at least two complementary closure elements 110, 120.

Dans sa structure générale, un tel ensemble de fermeture 100 est connu en soi et ne sera donc pas décrit dans le détail par la suite. II peut s'agir d'éléments de fermeture 100 de type crochets complémentaires (figures 2a, 2b), mâle femelle (figures 3 à 5), etc.In its general structure, such a closure assembly 100 is known per se and will therefore not be described in detail later. It may be closure elements 100 of the complementary hook type ( Figures 2a, 2b ), male Female ( Figures 3 to 5 ), etc.

Les éléments 110, 120 de l'ensemble de fermeture 100 sont chacun portés par un voile support 112, 120 articulé sur une paroi 10, 20 du sachet.The elements 110, 120 of the closure assembly 100 are each carried by a support web 112, 120 articulated on a wall 10, 20 of the bag.

Selon les modes de réalisation représentés sur les figures, les voiles support articulés 112, 122 sont venu de matière, plus précisément d'extrusion, sur la paroi 10 du sachet et relié à celui-ci en des zones référencées 114 et 124 respectivement.According to the embodiments shown in the figures, the hinged support webs 112, 122 are made of material, specifically extrusion, on the wall 10 of the bag and connected thereto in zones referenced 114 and 124 respectively.

En variante, voiles support articulés 112, 122 pourraient être portés par des voiles auxiliaires rapportés sur les parois 10, 20 et fixés sur celles-ci par tout moyen approprié, de préférence par soudure thermique.Alternatively, hinged support webs 112, 122 could be carried by auxiliary webs attached to the walls 10, 20 and fixed thereto by any appropriate means, preferably by thermal welding.

L'on notera que les zones 114, 124 de liaison entre les voiles support articulés 112, 122 et les parois 10, 20 du sachet ne coïncident pas avec les zones 111, 121 de liaison du pied de l'élément 110, 120 sur les voiles articulés 112, 122. Au contraire, les zones localisées 114, 124 sont disposées sur des extrémités respectives opposées des voiles 112, 120 (sur les faces internes des parois 10, 20), respectivement de part et d'autre des éléments complémentaires 110, 120.It will be noted that the zones 114, 124 connecting the articulated support webs 112, 122 and the walls 10, 20 of the bag do not coincide with the zones 111, 121 for connecting the foot of the element 110, 120 to the articulated sails 112, 122. On the contrary, the localized zones 114, 124 are disposed on respective opposite ends of the webs 112, 120 (on the internal faces of the walls 10, 20), respectively on either side of the complementary elements 110. , 120.

De préférence, la zone localisée 114 de l'un des voiles articulés 112 est adjacente à l'embouchure du sachet de sorte que le voile 112 est dirigé vers l'intérieur du sachet, tandis que la zone localisées 124 l'autre voile articulé 120 est adjacente au fond du sachet de sorte que le voile 122 est dirigé vers son embouchure. Les articulations des zones localisées 114, 124 sont donc distantes l'une de l'autre.Preferably, the localized area 114 of one of the hinged sails 112 is adjacent to the mouth of the bag so that the web 112 is directed towards the inside of the bag, while the localized area 124 the other articulated sail 120 is adjacent to the bottom of the bag so that the web 122 is directed towards its mouth. The joints of the localized areas 114, 124 are therefore distant from each other.

Grâce aux dispositions précédemment décrites, comme on le voit sur les figures 2b et 3b, lorsque les éléments de fermeture 110, 120 sont en prise et sollicités en écartement, les voiles support 112, 122 pivotent au niveau de leur zone locale 114, 124 respective et tendent à s'aligner l'un par rapport à l'autre, que la sollicitation des voiles 112, 122 soit interne (due à l'encombrement du contenu du sachet) ou externe (due à la l'action de l'utilisateur sur l'embouchure, etc.).Thanks to the provisions previously described, as we see on the Figures 2b and 3b when the closure members 110, 120 are engaged and spaced apart, the support webs 112, 122 pivot at their respective local area 114, 124 and tend to align with one another, that the solicitation of the sails 112, 122 is internal (due to the bulk of the contents of the bag) or external (due to the action of the user on the mouth, etc.).

L'ouverture du sachet est donc rendue plus difficile, dans la mesure où la sollicitation transversale exercée par les parois 10, 20 est amortie par l'articulation des voiles support 112, 122 qui tendent dans un premier temps à écarter les éléments de fermeture 110, 120 des parois 10, 20, puis dans un deuxième temps jouent un rôle de charnières et transforment les efforts subits par les éléments de fermeture 110, 120 en efforts de cisaillement.The opening of the bag is thus made more difficult, insofar as the transverse stress exerted by the walls 10, 20 is damped by the articulation of the support webs 112, 122 which initially tend to move the closure elements 110 away. , 120 of the walls 10, 20, then in a second time play a role of hinges and transform the sudden forces by the closure elements 110, 120 in shearing forces.

L'articulation des voiles support 112, 122 sur la paroi 10, 20 du sachet est encore améliorée lorsque l'un au moins des voiles support 112, 122 présente une surépaisseur locale 116, 126 au niveau de la zone 114, 124 respectivement, comme illustré en figures 2a à 5, agencée de sorte que l'extrémité libre des voiles support 112, 122, qui est adjacente aux éléments de fermeture 110, 120, se trouve à distance de la paroi 10, 20 lorsque l'ensemble de fermeture 100 n'est pas sollicité et se trouve au repos. L'axe principal d'extension des voiles support 112, 122 se trouve donc déporté par rapport à la paroi 10, 20.The articulation of the support webs 112, 122 on the wall 10, 20 of the bag is further improved when at least one of the support webs 112, 122 has a local extra thickness 116, 126 at the zone 114, 124 respectively, as illustrated in Figures 2a to 5 arranged so that the free end of the support webs 112, 122, which is adjacent to the closure elements 110, 120, is spaced from the wall 10, 20 when the closure assembly 100 is not stressed and is at rest. The main axis of extension of the support webs 112, 122 is therefore offset with respect to the wall 10, 20.

On comprendra que cette forme de réalisation des voiles support 112, 122 permet d'augmenter l'effet charnière lié à leur articulation sur les parois 10, 20. En effet, elle permet d'assouplir la partie libre des voiles support 112, 122, en particulier dans la zone des voiles 112, 122 s'étendant entre la surépaisseur locale 116, 126 et l'élément de fermeture 110, 120, ce qui a pour conséquence de faciliter la déformation élastique des voiles support 112, 122 dans cette zone et donc d'amortir encore davantage les effets d'une sollicitation interne ou externe.It will be understood that this embodiment of the support webs 112, 122 makes it possible to increase the hinge effect linked to their articulation on the walls 10, 20. In fact, it makes it possible to soften the free part of the support webs 112, 122, in particular in the area of the webs 112, 122 extending between the local extra thickness 116, 126 and the closure element 110, 120, which has the effect of facilitating the elastic deformation of the support webs 112, 122 in this area and thus to dampen even more the effects of an internal or external solicitation.

De préférence, chacun des voiles support 112, 122 présente une telle surépaisseur locale 116, 126, afin d'optimiser l'effet charnière de l'ensemble de fermeture 100.Preferably, each of the support webs 112, 122 has such a local extra thickness 116, 126, in order to optimize the hinge effect of the closure assembly 100.

Selon une forme de réalisation, illustrée en particulier sur les figures 2b, 3b et 4b, la résistance au cisaillement est encore améliorée par l'utilisation d'un double élément de fermeture 100 typiquement deux ensembles de crochets complémentaires 110a, 110b, 120a, 120b (figures 2a et 2b), deux ensembles mâle-femelle 110a, 110b, 120a, 120b (figure 3a et 3b ou figures 4a et 4b), ou un ensemble de crochets complémentaires associé à un ensemble de fermeture mâle-femelle (non illustré sur les figures), etc.According to one embodiment, illustrated in particular on the Figures 2b, 3b and 4b , the shear strength is further improved by the use of a double closure element 100, typically two sets of complementary hooks 110a, 110b, 120a, 120b ( Figures 2a and 2b ), two male-female assemblies 110a, 110b, 120a, 120b ( Figure 3a and 3b or Figures 4a and 4b ), or a set of complementary hooks associated with a male-female closure assembly (not shown in the figures), etc.

En effet, l'utilisation d'un ensemble de fermeture simple crée, au niveau du contact entre les moyens de fermeture, une articulation supplémentaire qui subit l'effet bras de levier dû aux voiles support 112, 122. Au contraire, la mise en oeuvre d'au moins deux ensembles de fermeture 110, 120 supprime cette articulation supplémentaire et rigidifie la fermeture du sachet, rendant ainsi encore plus difficile l'ouverture du sachet, que ce soit de l'intérieur ou de l'extérieur.Indeed, the use of a simple closure assembly creates, at the contact between the closure means, an additional joint which undergoes the lever effect due to the support webs 112, 122. On the contrary, the implementation Work of at least two closure assemblies 110, 120 eliminates this additional articulation and stiffens the closure of the bag, thus making it even more difficult to open the bag, whether from the inside or the outside.

Dans la variante de réalisation des figures 2a et 2b, la mise en oeuvre de crochets complémentaires 110a, 110b, 120a, 120b permet encore davantage de renforcer la difficulté de l'ouverture du sachet lorsque la concavité des crochets est orientée vers l'articulation du voile support associé. En effet, et comme on peut le voir en particulier sur la figure 2a, lorsque les voiles sont sollicités en écartement, par exemple par une pression interne, les crochets 110a, 110b, 120a, 120b tendent à se placer horizontalement en renforçant ainsi leur mise en prise mutuelle : plus les crochets s'orientent horizontalement, plus ils s'accrochent l'un à l'autre.In the variant embodiment of Figures 2a and 2b , the implementation of complementary hooks 110a, 110b, 120a, 120b allows even more to reinforce the difficulty of opening the bag when the concavity of the hooks is oriented towards the articulation of the associated support web. Indeed, and as can be seen in particular on the figure 2a when the webs are biased apart, for example by an internal pressure, the hooks 110a, 110b, 120a, 120b tend to be placed horizontally, thus reinforcing their mutual engagement: the more the hooks are oriented horizontally, the more they 'hang on to each other.

On obtient ainsi un sachet inviolable en conditions normales d'utilisation.This gives a tamper-proof bag under normal conditions of use.

Comme on peut le voir sur les figures 4a et 4b, les profilés 110a, 110b, 120a, 120b des ensembles mâle-femelle peuvent en outre être munis au niveau de leurs extrémités de crochets de manière à agripper encore davantage le profilé associé. Typiquement, le profilé mâle peut avoir la forme d'une gouttière en V dont les extrémités libres sont recourbées vers l'intérieur et adaptées pour venir en prise avec des crochets courbés vers l'extérieur disposés sur les extrémités libres correspondantes du profilé femelle complémentaire.As can be seen on the Figures 4a and 4b , the profiles 110a, 110b, 120a, 120b of the male-female assemblies may further be provided at their ends with hooks so as to further grip the associated section. Typically, the male section may have the shape of a V-shaped gutter whose free ends are bent inwards and adapted to engage with outwardly curved hooks arranged on the corresponding free ends of the complementary female profile.

Bien entendu, la présente invention n'est pas limitée aux modes de réalisation qui viennent d'être décrits mais s'étend à toutes variantes conformes à son esprit.Of course, the present invention is not limited to the embodiments that have just been described but extends to any variant within his mind.

Sur les figures 3a et 3b annexées, le voile support articulé 112 porte l'élément mâle de fermeture 110. En variante, le voile articulé 112 pourrait porter l'élément femelle 120.On the Figures 3a and 3b attached, the hinged support web 112 carries the male closure member 110. Alternatively, the hinged veil 112 could carry the female member 120.

De préférence, dans le cadre de la présente invention, les ensembles de fermeture 100 et les voiles articulés 112, 122 sont réalisés en matériau thermoplastique.Preferably, in the context of the present invention, the closure assemblies 100 and hinged sails 112, 122 are made of thermoplastic material.

Par ailleurs, le cas échéant, l'ensemble de fermeture 100 est associé à un curseur facilitant leur ouverture/fermeture.Moreover, if necessary, the closure assembly 100 is associated with a slider facilitating their opening / closing.

Un tel curseur est connu en soi dans sa structure générale et ne sera donc pas décrit dans le détail par la suite. On rappellera simplement que de manière générale un tel curseur comprend une semelle qui porte deux toiles latérales et un muret central définissant entre eux deux canaux non parallèles recevant respectivement au moins le sommet de l'un des deux voiles support des ensembles de fermeture ou des parois 10, 20, de sorte que selon le sens de déplacement du curseur, celui-ci sollicite les ensembles de fermeture 100 respectivement à l'ouverture et à la fermeture.Such a cursor is known per se in its general structure and will therefore not be described in detail later. It will be recalled simply that in general such a slider comprises a sole that carries two side canopies and a central wall defining between them two channels non-parallel receiving respectively at least the top of one of the two support webs closure assemblies or walls 10, 20, so that in the direction of movement of the cursor, it seeks the closure assemblies 100 respectively to the opening and closing.

Claims (7)

Sachet comprenant un ensemble de fermeture (100) comprenant deux éléments complémentaires (110, 120) portés par des voiles support respectifs (112, 122) solidaires d'un film (10) au niveau d'une zone localisée (114, 124) distante de l'élément de fermeture correspondant (110, 120) afin d'autoriser l'articulation desdits voiles support (112, 122) sur le film (10), lesdites zones localisées (114, 124) étant disposées sur des extrémités respectives opposées des voiles (112, 122), respectivement de part et d'autre des éléments complémentaires (110, 120) de sorte que l'un des voiles articulés (112) est dirigé vers l'intérieur du sachet tandis que l'autre voile articulé (122) est dirigé vers son embouchure,
caractérisé en ce que les voiles support (112, 122) présentent une surépaisseur locale (116, 126) au niveau de leur zone localisée respective (114, 124) agencée de sorte qu'une extrémité libre des voiles support (112, 122), qui est adjacente aux éléments de fermeture (110, 120), se trouve à distance de la paroi (10, 20) lorsque l'ensemble de fermeture (100) est au repos.Bag comprising a closure assembly (100) comprising two complementary elements (110, 120) carried by respective support webs (112, 122) integral with a film (10) at a remote local area (114, 124) of the corresponding closure element (110, 120) to allow the articulation of said support webs (112, 122) on the film (10), said localized regions (114, 124) being disposed on respective opposite ends of the sails (112, 122), respectively on either side of the complementary elements (110, 120) so that one of the hinged sails (112) is directed towards the inside of the bag while the other hinged sail ( 122) is directed to its mouth,
characterized in that the support webs (112, 122) have a local extra thickness (116, 126) at their respective localized area (114, 124) arranged so that a free end of the support webs (112, 122), which is adjacent to the closure elements (110, 120), is spaced from the wall (10, 20) when the closure assembly (100) is at rest. Sachet selon la revendication précédente, caractérisé en ce que les voiles support (112, 122) sont venu de matière sur une paroi (10) du sachet.Bag according to the preceding claim, characterized in that the support webs (112, 122) are integral on a wall (10) of the bag. Sachet selon la revendication 1, caractérisé en ce que les voiles support (112, 122) et l'ensemble de fermeture (100) sont portés par des voiles support auxiliaires (150, 160) rapportés et fixés sur les parois (10, 20) du sachet.Bag according to Claim 1, characterized in that the support webs (112, 122) and the closure assembly (100) are carried by auxiliary support webs (150, 160) attached to and fixed to the walls (10, 20). of the bag. Sachet selon l'une des revendications 1 à 3, caractérisé par le fait que les deux éléments complémentaires (110, 120) de l'ensemble de fermeture sont de type mâle/femelle.Bag according to one of claims 1 to 3, characterized in that the two complementary elements (110, 120) of the closure assembly are of the male / female type. Sachet selon la revendication précédente, caractérisé en ce que les deux éléments complémentaires (110, 120) de l'ensemble de fermeture comprennent chacun des crochets complémentaires dont la concavité est orientée vers l'articulation du voile correspondant.Bag according to the preceding claim, characterized in that the two complementary elements (110, 120) of the closure assembly each comprise complementary hooks whose concavity is oriented towards the articulation of the corresponding web. Sachet selon la revendication 4, caractérisé en ce que les deux éléments complémentaires (110, 120) de l'ensemble de fermeture comprennent des profilés de fermeture complémentaires mâle-femelle munis chacun au niveau de leurs extrémités libres de crochets adaptés pour coopérer avec le profilé associé.Bag according to claim 4, characterized in that the two complementary elements (110, 120) of the closure assembly comprise complementary male-female closure sections each provided at their free ends with hooks adapted to cooperate with the profile. associated. Sachet selon l'une des revendications précédentes, caractérisé en ce que l'ensemble de fermeture (100) est double, de sorte que chaque voile (112, 122) comporte deux éléments complémentaires (110, 120).Bag according to one of the preceding claims, characterized in that the closure assembly (100) is double, so that each web (112, 122) comprises two complementary elements (110, 120).
EP11176888.3A 2010-08-17 2011-08-09 Tamper-proof packaging bag Active EP2420454B1 (en)

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EP2420454B1 (en) 2013-07-10
FR2963927A1 (en) 2012-02-24
JP2012041089A (en) 2012-03-01
US20120045151A1 (en) 2012-02-23
ES2428349T3 (en) 2013-11-07
JP5996172B2 (en) 2016-09-21
FR2963927B1 (en) 2012-09-14

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