EP3368434B1 - Sachet having a concealed opening - Google Patents

Sachet having a concealed opening Download PDF

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Publication number
EP3368434B1
EP3368434B1 EP16790555.3A EP16790555A EP3368434B1 EP 3368434 B1 EP3368434 B1 EP 3368434B1 EP 16790555 A EP16790555 A EP 16790555A EP 3368434 B1 EP3368434 B1 EP 3368434B1
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EP
European Patent Office
Prior art keywords
bag
support web
wall
support
web
Prior art date
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Active
Application number
EP16790555.3A
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German (de)
French (fr)
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EP3368434A1 (en
Inventor
Romain MARTIAL
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S2F Flexico SARL
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S2F Flexico SARL
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Priority to PL16790555T priority Critical patent/PL3368434T3/en
Publication of EP3368434A1 publication Critical patent/EP3368434A1/en
Application granted granted Critical
Publication of EP3368434B1 publication Critical patent/EP3368434B1/en
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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
    • 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
    • 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
    • B65D2215/00—Child-proof means
    • B65D2215/08—Child-proof means for fooling children, e.g. fake closures

Definitions

  • the present invention relates to the field of packaging bags.
  • the present invention relates to the field of packaging sachets comprising opening / closing means, for example and not limited to the form of complementary profiles.
  • Most of the known closure devices for this purpose comprise two complementary profiles, for example of the male / female type or of the velvet / hook type, or else of the complementary hook type, carried by respective support webs.
  • the document FR 2 628 067 in particular proposed a bag comprising two main walls comprising two complementary closure profiles carried by respective support webs respectively fixed to the walls.
  • the area for fixing the support web to the wall is not superimposed on the male profile but offset relative to the latter in order to articulate the corresponding support web on the wall at the level of the fixing area.
  • the foregoing arrangement makes it possible to prevent the pressure inside the bag from being applied to the closure profiles and tends to separate them. Indeed, the separation of the walls of the bag (in order to open the latter) leads to a possible pivoting of the support web at the level of the hinge zone formed by its fixing, without risk of separation of the closure profiles.
  • the two sails fixing zones are located at a distance and on either side of the corresponding complementary profiles so that one of the articulated sails is directed towards the inside of the bag while the other articulated veil is directed towards its mouth .
  • Such a bag finds application, for example, in the field of packaging harmful products, such as laundry tablets. Indeed, it is important to be able to guarantee users that the sachet remains closed between two uses, in order to prevent children in particular from accessing its contents, while leaving the possibility for parents to open and close the sachet. several times without risking damage, and preferably without the successive opening and closing being too difficult.
  • An objective of the invention is therefore to provide a bag comprising opening / closing means, for example and without limitation in the form of complementary profiles, and having a system making it possible to easily open said opening / closing means.
  • opening / closing means for example and without limitation in the form of complementary profiles, and having a system making it possible to easily open said opening / closing means.
  • the invention provides a bag according to claim 1.
  • a sachet 1 comprises, conventionally per se, a first and a second wall 10, 20 connected together so as to define lateral sides and a bottom 2 of the sachet 1, as well as a mouth, extending in the opposite direction. from its bottom 2.
  • the sachet 1 can be produced using a single sheet folded over on itself and welded on two sides or of several sheets, for example two sheets welded together at their sides, preferably along edges connecting the sides. walls and forming the lateral sides and the bottom 2 of the bag 1.
  • the sachet 1 further comprises a closure assembly 3.
  • the closure assembly 3 extends near the mouth.
  • the closure assembly 3 comprises a first and a second support web 30, 32 respectively connected to the first and to the second wall 10, 20.
  • Each support web 30, 32 carries at least one complementary closure element 34, for example of complementary profile type, velor strip / hook, etc.
  • the first support web 30 has an upper part 30a and a lower part 30b, the upper part 30a being closer to the mouth of the bag 1 than the lower part 30b.
  • the lower part 30b also carries all or part of the closure element 34.
  • the first web support 30 is connected discontinuously over its length to the first wall 10 of the bag 1 so as to provide at least one passage between this first support web 30 and the first wall 10 of the bag 1, from the outside of the bag 1 .
  • the passage 40 makes it possible to locate the point of application of the force at the level of the closing element 34 of the first support web 30, or even the lower part of the first support web 30 (depending on the height of the passage 40 ) (see it figure 8b ). In this way, in cases where the second support web 32 is articulated, during the separation of the walls, the gripping of the first wall 10 behind the first support web 30 makes it possible to limit the rotation of the closure assembly 3 and therefore to get closer to management separating the direction of application of the force on the closing elements 34.
  • the support web 30, 32 is either attached and fixed, for example by welding, on the associated wall, or integral (that is to say formed integrally and in one piece) with said wall 10, 20.
  • the weld may be of the thermal weld type, an ultrasonic weld, for example by spots, or both (carried out successively).
  • first and the second support web 30, 32 can be connected using identical or different techniques to the associated wall 10, 20: for example, the first support web 30 can be attached and fixed to the first wall 10 while the second support web 32 may be integral with the second wall 20, or vice versa.
  • the passage 40 extends along a substantial height of the first support web 30, in order to allow the user to better block the movements of the first support web 30.
  • the first support web 30 can for example be divided into several consecutive sections, each corresponding to a part of the first support web 30 which is or is not welded to the first wall 10.
  • the first support web 30 is then well connected discontinuously over its length to the first wall 10 of the bag 1, since it is not fixed over at least part of its height to the first wall 10 along the second section. B.
  • the bag 1 can comprise more sections, including two separate sections in which the first support web 30 is not connected to the first wall 10 over part of its height.
  • the passage 40 can extend over the entire height of the upper part 30a of the first support web 30, or even possibly up to a zone underlying the closure element 34.
  • the upper part 30a of the first support web 30 can be connected to the first wall 10 in the first and third sections A, C, for example by welding, while it is left free (not welded) along the second section B.
  • the upper part 30a of the first support web 30 can comprise a local notch at the level of the second section B and connected to the first wall 10 along the first and second sections A, C.
  • the notch can in particular be obtained by cutting of the upper part of the first support web 30, at the level of the second section B.
  • the lower part 30b of the first support web 30 is connected continuously over all or part of its height to the first wall 10 of the bag 1 in the zone which extends opposite the passage 40.
  • This continuous connection of the lower part 30b in the extension of the passage 40 makes it possible to increase the force applied by the first wall 10 on the closure elements 34 in the direction of separation , and therefore to simplify their separation and the opening of the closure assembly.
  • only a lower zone, underlying the closure element 34, of the lower part 30b of the first support web 30 is connected to the first wall 10 (see figure 5 ). In this way, the user can insert his thumb into the passage beyond the closure element 34, which facilitates the triggering of the separation of the closure elements 34.
  • the lower part 30b of the first support web 30 is connected over part of its height to the first wall 10 along the second section B (see hatched area 44).
  • transverse welds 42 can also be made at the border between the first and the second section A, B of a on the one hand and at the border between the second and the third section B, C on the other hand (regardless of the height over which the lower part 30b is welded to the first wall). It will be noted that such transverse welds 42 make it possible, in addition to stiffening the fixing of the first support web 10, to ensure a seal between the outside and the inside of the bag 1 at the level of the second section B, despite the presence of the passage 40.
  • the lower part 30b can be left free (as illustrated on figure 5 , on which the hatched areas represent the welded parts of the first support web 30) or connected continuously to the first wall 10 of the bag 1 over all or part of its height, in which case the lower part is then connected to the lower wall d 'a lateral side of the bag 1 to the other.
  • the passage 40 has a length, in the direction of extension of the closure assembly 3 between the lateral sides of the sachet 1, between 12 mm and 35 mm.
  • the passage 40 is closer to one of the sides of the bag 1 than to the other of said sides, so as not to extend centrally. In this way, the passage 40 is less likely to be stressed when handling the bag 1.
  • the edge of the passage 40 may extend a distance between 10% and 30% of the distance between the lateral sides. of the bag 1, that is to say that for a bag 1 having a length, between the lateral sides, of 100 mm, the edge of the passage 40 extends at a distance of between 10 mm and 30 mm from the one of the lateral sides.
  • each closure element 34 comprises several complementary profiles, as illustrated in figures 3 to 9 , preferably between three and six complementary profiles, for example five.
  • the complementary profiles 34 may be of the male / female, male / male type (arrow-shaped profiles, as illustrated in the figures) velor / hooks, or else of the complementary hook type.
  • the complementary profiles 34 can be altered sequentially by forming successive alterations along the complementary profiles 34 in a direction transverse to the support webs.
  • the sequential alterations are sequential local modifications of the complementary profiles 34, which may in particular comprise sequential crushings and / or sequential incisions without removing material (that is to say either only sequential crushings, or only sequential incisions, either sequential crushing and sequential incisions) and / or sequential notches with material removal.
  • all or part of the complementary profiles 34 may include the sequential alterations.
  • several complementary profiles 34 may include sequential alterations while at least one complementary profile 34 may remain intact, or vice versa.
  • closure assemblies 3 will now be described in relation to the figures 1 to 4 annexed. However, these are non-limiting exemplary embodiments, insofar as the invention, within the limits of the appended claims, applies to any closure assembly 3 comprising support webs 30, 32, integrally formed on the walls 10, 20 of the bag 1 or attached and fixed to said walls 10, 20, comprising closure elements 34.
  • the second support web 32 can be articulated on the second wall 20 so that the traction on the walls of the bag 1, when the complementary closure elements 34 are in position. taken, causes the rotation of the support webs 30, 32 around said complementary closure elements 34.
  • the second support web 32 is fixed to the second wall 20 in a localized zone 33 which is not superimposed with the closure element 34 and which is offset with respect to said closure element 34, so that the second support web 32 is articulated on the second wall 20.
  • a fixing has for example been described in the document FR 2 628 067 on behalf of the Claimant.
  • the above arrangement makes it possible to prevent the pressure inside the bag 1 from being applied to the closure elements 34 and tends to separate them. Indeed, thanks to this arrangement, the separation of the walls of the bag 1 (in order to open the latter) leads to a possible pivoting of the support web at the level of the hinge zone formed by its fixing, without risk of separation of the closure elements 34 .
  • the localized zone extends at the level of the upper part 32a of the second support web 32 in order to avoid the risks of opening of the bag 1 resulting from the internal pressure applied by the contents of the bag 1 on the closure assembly 3 .
  • the localized zone can extend into the lower part 32b of the second support web 32 in order to prevent the opening of the bag 1 from the outside.
  • the upper part 32a of the second support web 32 can be of reduced height. In this way, the gripping of the second support web 32 will not be possible, thus making it necessary to use the passage 40.
  • the height of the second support web 32 may be less than the height of the closure element 34.
  • the height of the upper part of the second support web may be less than or equal to 1 mm.
  • the two support webs 30, 32 can be connected to the wall 10, 20 opposite at the level of a localized zone 31, 33.
  • the localized zones 31, 33 can be arranged on respective opposite parts of the support webs 30, 32 (here the upper part 30a and the lower part 32b), respectively on either side of the complementary closure elements 34, so that one of the articulated webs (here the first support web 30) is directed inwards bag 1 while the other articulated veil (here the second support veil 32) is directed towards its mouth.
  • the localized zones 31, 33 can be arranged on respective parts of the support webs 30, 32 which extend opposite, that is to say on the upper parts 30a, 32a of the webs 30, 32 or on their lower part 30b, 32b.
  • the first and the second support web 30, 32 can be connected to the first and the second wall 10, 20 by means of a first and a second extension web 12, 14, respectively, the at least one of the support webs 30, 32 being fixed to the extension web at a distance from its upper part 30a, 32a.
  • a binding has for example been described in the application FR 14 58288 (publication FR 3 025 499 ) on behalf of the Claimant.
  • the support web 30, 32 can be fixed to the corresponding extension web 12, 14 in an area adjacent to the complementary closure element 34 carried by said support web 30, 32.
  • the two support webs 30, 32 are each connected to an associated extension web 12, 14.
  • the bag 1 further comprises an additional wall 16 having a first panel 17 and a second panel 18.
  • the first panel 17 of the additional wall 16 is connected to the second wall 20 near the mouth of the bag 1 while the second panel 18 is connected to the first wall 10.
  • the additional wall 16 is folded between the first panel 17 and the second panel 18 along a fold 19 so that the second flap 18 extends towards the mouth.
  • the first support web 30 is also fixed to the second wall 20 and the second support web 32 is fixed to the second panel 18 of the additional wall 16.
  • FR 15 53143 publication FR 3,034,760
  • the second panel 18 of the additional wall 16 can also be fixed near the lateral sides of the first wall 10, between the second support web 32 and the fold 19 in order to make it more difficult to open the bag 1 by simple traction on the mouth.
  • the walls 10, 20 of the bag 1 can be made of an opaque (non-transparent) material, so as to reduce the possibility for children to see the closure assembly 3 through the walls 10, 20.
  • the walls 10, 20, the support webs 30, 32 and the complementary closure elements 34 can be made from a single material, in particular one of the following materials: polypropylene PP, poly (ethylene terephthalate) PET , polyethylene PE, high density polyethylene HDPE, low density polyethylene LDPE and their associated copolymers, ethylene copolymers and / or propylene copolymers.
  • these different elements of the bag 1 can be made from different materials. Mention may in particular be made, in a nonlimiting manner, of a bag 1 comprising a first wall 10 and a second wall 20 made of poly (ethylene terephthalate) and / or of polyethylene and a closure assembly 3 (support webs 30, 32 and additional closing elements 34) in polypropylene.
  • first and the second wall 10, 20 may have a thickness of between 30 micrometers and 200 micrometers, typically of the order of 60 micrometers to 150 micrometers, in particular when said walls are formed from one of the materials described below. -above. It will of course be understood that these walls can be made of complex materials comprising several layers of different materials.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Cartons (AREA)
  • Slide Fasteners (AREA)

Description

DOMAINE DE L'INVENTIONFIELD OF THE INVENTION

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 sachets comprising opening / closing means, for example and not limited to the form of complementary profiles.

ARRIERE-PLAN TECHNOLOGIQUETECHNOLOGICAL BACKGROUND

De nombreux sachets d'emballage et de nombreux dispositifs de fermeture à cet effet ont déjà été proposés.Numerous packaging bags and numerous closure devices for this purpose have already been proposed.

La plupart des dispositifs de fermeture connus à cette fin comprennent deux profilés 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 of the known closure devices for this purpose comprise two complementary profiles, for example of the male / female type or of the velvet / hook type, or else of the complementary hook type, carried by respective support webs.

Le document FR 2 628 067 a notamment proposé un sachet comprenant deux parois principales comprenant deux profilés de fermeture complémentaires portés par des voiles support respectifs fixés respectivement sur les parois. La zone de fixation du voile support sur la paroi n'est pas superposée au profilé mâle mais décalée par rapport à celui-ci afin d'articuler le voile support correspondant sur la paroi au niveau de la zone de fixation. Comme cela est décrit dans le document FR 2 628 067 , la disposition qui précède permet d'éviter que la pression interne au sachet ne soit appliquée aux profilés de fermeture et tende à séparer ceux-ci. En effet, la séparation des parois du sachet (afin d'ouvrir ce dernier) conduit à un possible pivotement du voile support au niveau de la zone charnière formée par sa fixation, sans risque de séparation des profilés de fermeture.The document FR 2 628 067 in particular proposed a bag comprising two main walls comprising two complementary closure profiles carried by respective support webs respectively fixed to the walls. The area for fixing the support web to the wall is not superimposed on the male profile but offset relative to the latter in order to articulate the corresponding support web on the wall at the level of the fixing area. As described in the document FR 2 628 067 , the foregoing arrangement makes it possible to prevent the pressure inside the bag from being applied to the closure profiles and tends to separate them. Indeed, the separation of the walls of the bag (in order to open the latter) leads to a possible pivoting of the support web at the level of the hinge zone formed by its fixing, without risk of separation of the closure profiles.

Les sachets répondant à cette disposition ont déjà rendu de grands services et rendent la réouverture du sachet difficile, de manière à assurer à son usager que son contenu ne puisse pas en ressortir facilement.The sachets meeting this provision have already rendered great service and make it difficult to reopen the sachet, so as to assure the user that its contents cannot easily come out.

On a également proposé dans le document FR 2 963 927 que les deux zones de fixation des voiles soient localisées à distance et de part et autre des profilés complémentaires correspondants 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.It was also proposed in the document FR 2 963 927 that the two sails fixing zones are located at a distance and on either side of the corresponding complementary profiles so that one of the articulated sails is directed towards the inside of the bag while the other articulated veil is directed towards its mouth .

Ces sachets résistent encore davantage aux sollicitations internes et externes des parois du sachet, à tel point qu'il s'avère aujourd'hui très difficile de les ouvrir sans endommager le dispositif de fermeture ou les parois du sachet.These sachets are even more resistant to internal and external stresses from the walls of the sachet, to such an extent that it is now very difficult to open them without damaging the closure device or the walls of the sachet.

Or dans certains cas, il peut s'avérer nécessaire de pouvoir ouvrir le sachet sans l'endommager, afin d'accéder à son contenu tout en étant sûr de pouvoir le refermer après ouverture.However, in certain cases, it may prove necessary to be able to open the sachet without damaging it, in order to access its contents while being sure of being able to close it after opening.

Un tel sachet trouve par exemple application dans le domaine de l'emballage de produits nocifs, tels que des tablettes de lessive. En effet, il est important de pouvoir garantir aux usagers que le sachet reste fermé entre deux utilisations, afin d'empêcher notamment à des enfants d'accéder à son contenu, tout en laissant la possibilité aux parents d'ouvrir et de refermer le sachet à plusieurs reprises sans risquer de l'endommager, et de préférence sans que les ouvertures et fermetures successives ne soient trop difficiles.Such a bag finds application, for example, in the field of packaging harmful products, such as laundry tablets. Indeed, it is important to be able to guarantee users that the sachet remains closed between two uses, in order to prevent children in particular from accessing its contents, while leaving the possibility for parents to open and close the sachet. several times without risking damage, and preferably without the successive opening and closing being too difficult.

US 2014/270585 divulgue un sachet de l'état de la technique. US 2014/270585 discloses a state of the art sachet.

RESUME DE L'INVENTIONSUMMARY OF THE INVENTION

Un objectif de l'invention est donc de proposer un sachet comprenant des moyens d'ouverture/fermeture, par exemple et non limitativement sous forme de profilés complémentaires, et présentant un système permettant d'ouvrir facilement lesdits moyens d'ouverture/fermeture. Le cas échéant, lorsque les moyens d'ouverture sont articulés sur l'une et/ou l'autre des parois du sachet, le système doit permettre à un adulte d'ouvrir un sachet malgré l'effet charnière généré par l'articulation.An objective of the invention is therefore to provide a bag comprising opening / closing means, for example and without limitation in the form of complementary profiles, and having a system making it possible to easily open said opening / closing means. Where appropriate, when the opening means are articulated on one and / or the other of the walls of the bag, the system must allow an adult to open a bag despite the hinge effect generated by the articulation.

Pour cela, l'invention propose un sachet conforme à la revendication 1.For this, the invention provides a bag according to claim 1.

Certaines caractéristiques préférées mais non limitatives du sachet décrit ci-dessus sont les suivantes, prises individuellement ou en combinaison :

  • le bord inférieur du premier voile support est relié à la première paroi de manière continue entre les côtés latéraux du sachet,
  • la partie supérieure du premier voile support est reliée de manière discontinue à la première paroi de manière à ménager le passage,
  • la partie supérieure du premier voile support est localement découpée de manière à ménager le passage,
  • le deuxième voile support est articulé sur la deuxième paroi de sorte que la traction sur les parois du sachet lorsque les éléments de fermeture complémentaires sont en prise entraine la rotation des voiles support autour desdits élément de fermeture complémentaires,
  • le deuxième voile support est fixé sur la deuxième paroi dans une zone localisée qui n'est pas superposée avec l'élément de fermeture du deuxième voile support et qui est décalée par rapport audit élément de fermeture du deuxième voile support, de sorte que le deuxième voile support est articulé sur la deuxième paroi,
  • le deuxième voile support est divisé en une partie inférieure et une partie supérieure, la partie inférieure étant plus proche du fond que la partie supérieure et portant l'élément de fermeture, et dans lequel la zone localisée au niveau de laquelle est fixé le deuxième voile support sur la deuxième paroi fait partie de la partie inférieure dudit deuxième voile support,
  • la partie supérieure du deuxième voile support présente une hauteur inférieure à une hauteur de l'élément de fermeture du deuxième voile support,
  • le premier et le deuxième voile support sont reliés à la première et à la deuxième paroi par l'intermédiaire d'un premier et d'un deuxième voile d'extension, respectivement, l'un au moins des voiles support étant fixé au voile d'extension à distance de son bord supérieur,
  • l'au moins un voile support est fixé au voile d'extension correspondant dans une zone adjacente à l'élément de fermeture complémentaire porté par ledit voile support,
  • le sachet comprend en outre une paroi supplémentaire présentant un premier pan et un deuxième pan, le premier pan étant relié à la deuxième paroi à proximité de l'embouchure du sachet tandis que le deuxième pan est relié à la première paroi, ladite paroi supplémentaire étant pliée entre le premier pan et le deuxième pan le long d'un pli de sorte que le premier pan s'étend en direction du fond, et dans lequel le premier voile support est en outre fixé sur la deuxième paroi, et le deuxième voile support est en outre fixé sur le deuxième pan de la paroi supplémentaire,
  • le deuxième pan de la paroi supplémentaire est fixé à proximité des bords latéraux de la première paroi, entre le deuxième voile support et le pli,
  • les éléments de fermeture complémentaires comprennent chacun au moins un profilé complémentaire, de préférence au moins deux profilés complémentaires, par exemple entre trois et six profilés complémentaires, et/ou
  • tout ou partie des profilés complémentaires comprend des altérations séquentielles sensiblement parallèles aux côtés latéraux, typiquement des écrasements séquentiels.
Certain preferred but non-limiting characteristics of the sachet described above are the following, taken individually or in combination:
  • the lower edge of the first support web is connected to the first wall continuously between the lateral sides of the bag,
  • the upper part of the first support web is connected discontinuously to the first wall so as to provide the passage,
  • the upper part of the first support web is locally cut so as to provide the passage,
  • the second support web is articulated on the second wall so that the traction on the walls of the bag when the complementary closure elements are engaged causes the rotation of the support webs around said complementary closure elements,
  • the second support web is fixed to the second wall in a localized area which is not superimposed with the closing element of the second support web and which is offset with respect to said closing element of the second support web, so that the second support web is articulated on the second wall,
  • the second support web is divided into a lower part and an upper part, the lower part being closer to the bottom than the upper part and carrying the closure element, and in which the localized area at which the second web is fixed support on the second wall is part of the lower part of said second support web,
  • the upper part of the second support web has a height less than a height of the closing element of the second support web,
  • the first and the second support web are connected to the first and to the second wall by means of a first and a second extension web, respectively, at least one of the support webs being fixed to the web d 'extension at a distance from its upper edge,
  • the at least one support web is fixed to the corresponding extension web in an area adjacent to the complementary closure element carried by said support web,
  • the bag further comprises an additional wall having a first side and a second side, the first side being connected to the second wall near the mouth of the bag while the second side is connected to the first wall, said additional wall being folded between the first panel and the second panel along a fold such that the first panel extends towards the bottom, and in which the first support web is further fixed to the second wall, and the second support web is also fixed on the second side of the additional wall,
  • the second side of the additional wall is fixed near the side edges of the first wall, between the second support web and the ply,
  • the complementary closing elements each comprise at least one complementary profile, preferably at least two complementary profiles, for example between three and six complementary profiles, and / or
  • all or part of the complementary profiles comprises sequential alterations substantially parallel to the lateral sides, typically sequential crushings.

BREVE DESCRIPTION DES DESSINSBRIEF DESCRIPTION OF THE DRAWINGS

D'autres caractéristiques, buts et avantages de la présente invention apparaîtront mieux 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 illustre une vue en coupe transversale d'un premier exemple de réalisation d'un sachet, le sachet étant au repos,
  • La figure 2 illustre une vue en coupe transversale d'un deuxième exemple de réalisation d'un sachet, le sachet étant au repos,
  • La figure 3 illustre une vue en coupe transversale d'un troisième exemple de réalisation d'un sachet, le sachet étant au repos,
  • La figure 4 illustre une vue en coupe transversale d'un quatrième exemple de réalisation d'un sachet, lorsque le sachet est au repos,
  • La figure 5 est une vue en détail d'un exemple de réalisation d'un passage permettant une ouverture facile d'un sachet conforme à l'invention,
  • La figure 6a est une vue du dessus d'une variante de réalisation du premier exemple de réalisation d'un sachet conforme à l'invention, comprenant l'ouverture facile de la figure 5, lorsqu'un utilisateur tente d'ouvrir le sachet de manière conventionnelle,
  • La figure 6b est une vue en coupe du sachet de la figure 6a, suivant l'axe A-A illustré sur la figure 6A,
  • La figure 7 est une vue en coupe du sachet de la figure 6a, suivant l'axe B-A illustré sur la figure 6a, lorsqu'un utilisateur insère l'un de ses pouces dans le passage et place l'autre de ses pouces le long de la deuxième paroi,
  • La figure 8a est une vue du dessus du sachet de la figure 6a lorsqu'un utilisateur utilise le passage et est sur le point de séparer les éléments de fermeture,
  • La figure 8b est une vue en coupe du sachet de la figure 8a, suivant l'axe B-B illustré sur la figure 7,
  • La figure 9 est une vue du dessus du sachet de la figure 6a lorsque les éléments de fermeture sont en train de se séparer.
Other characteristics, aims and advantages of the present invention will emerge more clearly on reading the detailed description which follows, and with regard to the appended drawings given by way of non-limiting examples and in which:
  • The figure 1 illustrates a cross-sectional view of a first embodiment of a bag, the bag being at rest,
  • The figure 2 illustrates a cross-sectional view of a second exemplary embodiment of a bag, the bag being at rest,
  • The figure 3 illustrates a cross-sectional view of a third embodiment of a bag, the bag being at rest,
  • The figure 4 illustrates a cross-sectional view of a fourth exemplary embodiment of a bag, when the bag is at rest,
  • The figure 5 is a detailed view of an exemplary embodiment of a passage allowing easy opening of a bag according to the invention,
  • The figure 6a is a top view of an alternative embodiment of the first embodiment of a bag according to the invention, comprising the easy opening of the figure 5 , when a user tries to open the bag in a conventional manner,
  • The figure 6b is a sectional view of the bag of the figure 6a , along the AA axis shown on figure 6A ,
  • The figure 7 is a sectional view of the bag of the figure 6a , along the BA axis shown on the figure 6a , when a user inserts one of his thumbs in the passage and place the other of his thumbs along the second wall,
  • The figure 8a is a top view of the bag of the figure 6a when a user uses the passage and is about to separate the closure elements,
  • The figure 8b is a sectional view of the bag of the figure 8a , along the BB axis illustrated on figure 7 ,
  • The figure 9 is a top view of the bag of the figure 6a when the closure elements are separating.

DESCRIPTION DETAILLEE D'UN MODE DE REALISATIONDETAILED DESCRIPTION OF AN EMBODIMENT

Un sachet 1 comprend, de façon classique en soi, une première et une deuxième paroi 10, 20 reliées ensemble de manière à définir des côtés latéraux et un fond 2 du sachet 1, ainsi qu'une embouchure, s'étendant à l'opposé de son fond 2.A sachet 1 comprises, conventionally per se, a first and a second wall 10, 20 connected together so as to define lateral sides and a bottom 2 of the sachet 1, as well as a mouth, extending in the opposite direction. from its bottom 2.

Le sachet 1 peut être réalisé à l'aide d'une feuille unique repliée sur elle-même et soudée sur deux côtés ou de plusieurs feuilles, par exemple deux feuilles soudées entre elles au niveau de leurs côtés, de préférence selon des arêtes reliant les parois et formant les côtés latéraux et le fond 2 du sachet 1.The sachet 1 can be produced using a single sheet folded over on itself and welded on two sides or of several sheets, for example two sheets welded together at their sides, preferably along edges connecting the sides. walls and forming the lateral sides and the bottom 2 of the bag 1.

Le sachet 1 comprend en outre un ensemble de fermeture 3. L'ensemble de fermeture 3 s'étend à proximité de l'embouchure.The sachet 1 further comprises a closure assembly 3. The closure assembly 3 extends near the mouth.

L'ensemble de fermeture 3 comprend un premier et un deuxième voile support 30, 32 reliés respectivement à la première et à la deuxième paroi 10, 20. Chaque voile support 30, 32 porte au moins un élément de fermeture complémentaire 34, par exemple du type profilé complémentaire, bande de velours/crochet, etc.The closure assembly 3 comprises a first and a second support web 30, 32 respectively connected to the first and to the second wall 10, 20. Each support web 30, 32 carries at least one complementary closure element 34, for example of complementary profile type, velor strip / hook, etc.

Le premier voile support 30 présente une partie supérieure 30a et une partie inférieure 30b, la partie supérieure 30a étant plus proche de l'embouchure du sachet 1 que la partie inférieure 30b. La partie inférieure 30b porte par ailleurs tout ou partie de l'élément de fermeture 34.The first support web 30 has an upper part 30a and a lower part 30b, the upper part 30a being closer to the mouth of the bag 1 than the lower part 30b. The lower part 30b also carries all or part of the closure element 34.

Afin de permettre une déformation locale du premier voile support 30 propre à modifier l'orientation relative locale des éléments de fermeture 34 lors d'un écartement des parois du sachet 1 et faciliter l'ouverture de l'ensemble de fermeture 3, le premier voile support 30 est relié de manière discontinue sur sa longueur à la première paroi 10 du sachet 1 de façon à ménager au moins un passage entre ce premier voile support 30 et la première paroi 10 du sachet 1, à partir de l'extérieur du sachet 1.In order to allow a local deformation of the first support web 30 capable of modifying the local relative orientation of the closure elements 34 during a separation from the walls of the bag 1 and to facilitate the opening of the closure assembly 3, the first web support 30 is connected discontinuously over its length to the first wall 10 of the bag 1 so as to provide at least one passage between this first support web 30 and the first wall 10 of the bag 1, from the outside of the bag 1 .

Cette configuration est particulièrement avantageuse dans le cas d'un sachet 1 dont l'ensemble de fermeture 3 est difficile à ouvrir, tel qu'un ensemble de fermeture 3 articulé sur l'une au moins des parois du sachet 1, mais trouve également application lorsque l'ensemble de fermeture 3 est conventionnel (non articulé). En effet, pour ouvrir l'ensemble de fermeture 3, il suffit à un utilisateur :

  • d'introduire l'un de ses pouces depuis l'extérieur du sachet 1 - soit par l'embouchure - de manière à saisir la deuxième paroi 20, de préférence à proximité de l'élément de fermeture 34 du deuxième voile support 32,
  • d'introduire son deuxième pouce dans l'embouchure du sachet 1 dans le passage 40 formé entre la première paroi 10 et le premier voile support 30 (voir figure 7). Dans cette position, les voiles support sont sensiblement parallèles l'une à l'autre, et
  • d'écarter les parois en appliquant un effort sur lesdites parois grâce au premier pouce et au deuxième pouce représentées sur la figure 8b) qui s'étend sensiblement perpendiculairement au plan de l'ensemble de fermeture 3 (voir figures 8a et 8b).
This configuration is particularly advantageous in the case of a bag 1 of which the closure assembly 3 is difficult to open, such as a closure assembly 3 articulated on at least one of the walls of the bag 1, but also finds application when the closure assembly 3 is conventional (non-articulated). Indeed, to open the closure assembly 3, a user only needs:
  • to introduce one of his thumbs from the outside of the bag 1 - either through the mouth - so as to grip the second wall 20, preferably near the closure element 34 of the second support web 32,
  • to introduce his second thumb into the mouth of the bag 1 in the passage 40 formed between the first wall 10 and the first support web 30 (see figure 7 ). In this position, the support webs are substantially parallel to one another, and
  • to move aside the walls by applying a force to said walls thanks to the first inch and the second inch shown on the figure 8b ) which extends substantially perpendicular to the plane of the closure assembly 3 (see figures 8a and 8b ).

En pratique, le passage 40 permet de localiser le point d'application de l'effort au niveau de l'élément de fermeture 34 du premier voile support 30, voire de la partie inférieure du premier voile support 30 (selon la hauteur du passage 40) (voir la figure 8b). De la sorte, dans les cas où le deuxième voile support 32 est articulé, lors de l'écartement des parois, la saisie de la première paroi 10 derrière le premier voile support 30 permet de limiter la rotation de l'ensemble de fermeture 3 et donc de rapprocher de la direction de séparation la direction d'application de l'effort sur les éléments de fermeture 34.In practice, the passage 40 makes it possible to locate the point of application of the force at the level of the closing element 34 of the first support web 30, or even the lower part of the first support web 30 (depending on the height of the passage 40 ) (see it figure 8b ). In this way, in cases where the second support web 32 is articulated, during the separation of the walls, the gripping of the first wall 10 behind the first support web 30 makes it possible to limit the rotation of the closure assembly 3 and therefore to get closer to management separating the direction of application of the force on the closing elements 34.

A titre de comparaison, comme illustré sur les figures 6a et 6b, lorsque l'utilisateur tente d'ouvrir de manière conventionnelle un sachet 1 comportant une articulation (zones 31 ou 33), l'effort de traction appliqué sur les parois 10, 20 a pour effet de faire tourner l'ensemble de fermeture et de l'aligner avec la direction d'application de cet effort (voir les flèches sur la figure 6b), soit perpendiculairement à la direction de séparation des éléments de fermeture 34 (ladite direction de séparation s'étendant perpendiculairement au plan des voiles support 30, 32). Il en résulte que les éléments de fermeture 34 restent en prise et empêchent l'ouverture du sachet 1.For comparison, as shown in the figures 6a and 6b , when the user tries to open in a conventional manner a bag 1 comprising an articulation (zones 31 or 33), the tensile force applied to the walls 10, 20 has the effect of rotating the closure assembly and align it with the direction of application of this force (see arrows on the figure 6b ), or perpendicular to the direction of separation of the closure elements 34 (said direction of separation extending perpendicular to the plane of the support webs 30, 32). As a result, the closure elements 34 remain engaged and prevent the opening of the bag 1.

Par relié, on comprendra ici que le voile support 30, 32, est soit rapporté et fixé, par exemple par soudure, sur la paroi associée, soit venu de matière (c'est-à-dire formé intégralement et en une seule pièce) avec ladite paroi 10, 20. La soudure peut être du type soudure thermique, une soudure à ultrasons, par exemple par points, ou les deux (réalisées successivement).By connected, it will be understood here that the support web 30, 32, is either attached and fixed, for example by welding, on the associated wall, or integral (that is to say formed integrally and in one piece) with said wall 10, 20. The weld may be of the thermal weld type, an ultrasonic weld, for example by spots, or both (carried out successively).

Bien entendu, le premier et le deuxième voile support 30, 32 peuvent être reliés selon des techniques identiques ou différentes à la paroi 10, 20 associée : par exemple, le premier voile support 30 peut être rapporté et fixé sur la première paroi 10 tandis que le deuxième voile support 32 peut être venu de matière avec la deuxième paroi 20, ou inversement.Of course, the first and the second support web 30, 32 can be connected using identical or different techniques to the associated wall 10, 20: for example, the first support web 30 can be attached and fixed to the first wall 10 while the second support web 32 may be integral with the second wall 20, or vice versa.

Dans une forme de réalisation, le passage 40 s'étend le long d'une hauteur substantielle du premier voile support 30, afin de permettre à l'utilisateur de mieux bloquer les mouvements du premier voile support 30.In one embodiment, the passage 40 extends along a substantial height of the first support web 30, in order to allow the user to better block the movements of the first support web 30.

Le premier voile support 30 peut par exemple être divisé en plusieurs tronçons consécutifs, correspondant chacun à une partie du premier voile support 30 qui est ou non soudée sur la première paroi 10.The first support web 30 can for example be divided into several consecutive sections, each corresponding to a part of the first support web 30 which is or is not welded to the first wall 10.

Par exemple, dans un exemple de réalisation illustré sur la figure 5, le premier voile support 30 peut être divisé en trois tronçons A, B, C :

  • un premier tronçon A qui s'étend entre l'un des bords latéraux du sachet 1 et le passage 40, dans lequel le premier voile support 30 est relié à la première paroi 10,
  • un deuxième tronçon B, qui s'étend le long du passage 40, dans lequel le premier voile support 30 n'est pas relié sur au moins une partie de sa hauteur au premier voile support 30, de manière à ménager le passage 40, et
  • un troisième tronçon C, qui s'étend entre l'autre des bords latéraux du sachet 1 et le passage 40, dans lequel le premier voile support 30 est relié à la première paroi 10.
For example, in an exemplary embodiment illustrated in figure 5 , the first support web 30 can be divided into three sections A, B, C:
  • a first section A which extends between one of the lateral edges of the bag 1 and the passage 40, in which the first support web 30 is connected to the first wall 10,
  • a second section B, which extends along the passage 40, in which the first support web 30 is not connected over at least part of its height to the first support web 30, so as to provide the passage 40, and
  • a third section C, which extends between the other of the lateral edges of the bag 1 and the passage 40, in which the first support web 30 is connected to the first wall 10.

Le premier voile support 30 est alors bien relié de manière discontinue sur sa longueur à la première paroi 10 du sachet 1, puisqu'il n'est pas fixé sur au moins une partie de sa hauteur à la première paroi 10 le long du deuxième tronçon B.The first support web 30 is then well connected discontinuously over its length to the first wall 10 of the bag 1, since it is not fixed over at least part of its height to the first wall 10 along the second section. B.

Par longueur, on comprendra ici la dimension qui s'étend le long de la direction d'extension de l'ensemble de fermeture 3 et qui s'étend entre les côtés latéraux du sachet 1. Par ailleurs, par hauteur on comprendra la dimension qui s'étend perpendiculairement à la direction d'extension de l'ensemble de fermeture 3 et qui s'étend entre l'embouchure et le fond 2 du sachet 1.By length, we will understand here the dimension which extends along the direction of extension of the closure assembly 3 and which extends between the lateral sides of the bag 1. Furthermore, by height we will understand the dimension which extends perpendicular to the direction of extension of the closure assembly 3 and which extends between the mouth and the bottom 2 of the bag 1.

On comprendra que le sachet 1 peut comprendre davantage de tronçons, dont deux tronçons disjoints dans lesquels le premier voile support 30 n'est pas relié à la première paroi 10 sur une partie de sa hauteur.It will be understood that the bag 1 can comprise more sections, including two separate sections in which the first support web 30 is not connected to the first wall 10 over part of its height.

Dans une forme de réalisation, le passage 40 peut s'étendre sur toute la hauteur de la partie supérieure 30a du premier voile support 30, voire éventuellement jusqu'à une zone sous-jacente à l'élément de fermeture 34. Pour cela, la partie supérieure 30a du premier voile support 30 peut être reliée à la première paroi 10 dans les premier et troisième tronçons A, C, par exemple par soudage, tandis qu'elle est laissée libre (non soudée) le long du deuxième tronçon B.In one embodiment, the passage 40 can extend over the entire height of the upper part 30a of the first support web 30, or even possibly up to a zone underlying the closure element 34. For this, the upper part 30a of the first support web 30 can be connected to the first wall 10 in the first and third sections A, C, for example by welding, while it is left free (not welded) along the second section B.

En variante, la partie supérieure 30a du premier voile support 30 peut comprendre une encoche locale au niveau du deuxième tronçon B et reliée à la première paroi 10 le long des premier et deuxième tronçons A, C. L'encoche peut notamment être obtenue par découpe de la partie supérieure du premier voile support 30, au niveau du deuxième tronçon B.As a variant, the upper part 30a of the first support web 30 can comprise a local notch at the level of the second section B and connected to the first wall 10 along the first and second sections A, C. The notch can in particular be obtained by cutting of the upper part of the first support web 30, at the level of the second section B.

Dans un mode de réalisation, afin de faciliter l'ouverture de l'ensemble de fermeture 3, la partie inférieure 30b du premier voile support 30 est reliée de manière continue sur tout ou partie de sa hauteur à la première paroi 10 du sachet 1 dans la zone qui s'étend en regard du passage 40. Cette liaison continue de la partie inférieure 30b dans le prolongement du passage 40 permet d'accroître l'effort appliqué par la première paroi 10 sur les éléments de fermeture 34 suivant la direction de séparation, et donc de simplifier leur séparation et l'ouverture de l'ensemble de fermeture. Dans une forme de réalisation, seule une zone inférieure, sous-jacente à l'élément de fermeture 34, de la partie inférieure 30b du premier voile support 30 est reliée à la première paroi 10 (voir figure 5). De la sorte, l'utilisateur peut introduire son pouce dans le passage au-delà de l'élément de fermeture 34, ce qui facilite le déclenchement de la séparation des éléments de fermeture 34.In one embodiment, in order to facilitate the opening of the closure assembly 3, the lower part 30b of the first support web 30 is connected continuously over all or part of its height to the first wall 10 of the bag 1 in the zone which extends opposite the passage 40. This continuous connection of the lower part 30b in the extension of the passage 40 makes it possible to increase the force applied by the first wall 10 on the closure elements 34 in the direction of separation , and therefore to simplify their separation and the opening of the closure assembly. In one embodiment, only a lower zone, underlying the closure element 34, of the lower part 30b of the first support web 30 is connected to the first wall 10 (see figure 5 ). In this way, the user can insert his thumb into the passage beyond the closure element 34, which facilitates the triggering of the separation of the closure elements 34.

Typiquement, dans l'exemple de réalisation illustré sur la figure 5, la partie inférieure 30b du premier voile support 30 est reliée sur une partie de sa hauteur à la première paroi 10 le long du deuxième tronçon B (voir la zone hachurée 44).Typically, in the exemplary embodiment illustrated in figure 5 , the lower part 30b of the first support web 30 is connected over part of its height to the first wall 10 along the second section B (see hatched area 44).

De manière optionnelle, afin de rigidifier la fixation de la partie inférieure 30b du premier voile support 30 sur la première paroi 10, des soudures transversales 42 peuvent en outre être effectuées à la frontière entre le premier et le deuxième tronçon A, B d'une part et à la frontière entre le deuxième et le troisième tronçon B, C d'autre part (quelle que soit la hauteur sur laquelle la partie inférieure 30b est soudée à la premier paroi). On notera que de telles soudures transversales 42 permettent, en plus de rigidifier la fixation du premier voile support 10, d'assurer une étanchéité entre l'extérieur et l'intérieur du sachet 1 au niveau du deuxième tronçon B, malgré la présence du passage 40.Optionally, in order to stiffen the fixing of the lower part 30b of the first support web 30 on the first wall 10, transverse welds 42 can also be made at the border between the first and the second section A, B of a on the one hand and at the border between the second and the third section B, C on the other hand (regardless of the height over which the lower part 30b is welded to the first wall). It will be noted that such transverse welds 42 make it possible, in addition to stiffening the fixing of the first support web 10, to ensure a seal between the outside and the inside of the bag 1 at the level of the second section B, despite the presence of the passage 40.

Au niveau des premier et troisième tronçons A, C, la partie inférieure 30b peut être laissée libre (comme illustré sur la figure 5, sur laquelle les zones hachurées représentent les parties soudées du premier voile support 30) ou reliée de manière continue à la première paroi 10 du sachet 1 sur tout ou partie de sa hauteur, auquel cas la partie inférieure est alors reliée à la paroi inférieure d'un côté latéral du sachet 1 à l'autre.At the level of the first and third sections A, C, the lower part 30b can be left free (as illustrated on figure 5 , on which the hatched areas represent the welded parts of the first support web 30) or connected continuously to the first wall 10 of the bag 1 over all or part of its height, in which case the lower part is then connected to the lower wall d 'a lateral side of the bag 1 to the other.

Afin de permettre le passage 40 d'un pouce, de préférence du pouce d'un adulte, le passage 40 présente une longueur, suivant la direction d'extension de l'ensemble de fermeture 3 entre les côtés latéraux du sachet 1, comprise entre 12 mm et 35 mm.In order to allow the passage 40 of an inch, preferably an adult's thumb, the passage 40 has a length, in the direction of extension of the closure assembly 3 between the lateral sides of the sachet 1, between 12 mm and 35 mm.

Dans une forme de réalisation, le passage 40 est plus proche de l'un des côtés du sachet 1 que de l'autre desdits côtés, de manière à ne pas s'étendre de manière centrale. De la sorte, le passage 40 est moins susceptible d'être sollicité lors de la manipulation du sachet 1. Typiquement, le bord du passage 40 peut s'étendre à une distance comprise entre 10% et 30% de la distance entre les côtés latéraux du sachet 1, c'est-à-dire que pour un sachet 1 présentant une longueur, entre les côtés latéraux, de 100 mm, le bord du passage 40 s'étend à une distance comprise entre 10 mm et 30 mm de l'un des côtés latéraux.In one embodiment, the passage 40 is closer to one of the sides of the bag 1 than to the other of said sides, so as not to extend centrally. In this way, the passage 40 is less likely to be stressed when handling the bag 1. Typically, the edge of the passage 40 may extend a distance between 10% and 30% of the distance between the lateral sides. of the bag 1, that is to say that for a bag 1 having a length, between the lateral sides, of 100 mm, the edge of the passage 40 extends at a distance of between 10 mm and 30 mm from the one of the lateral sides.

Dans un mode de réalisation, chaque élément de fermeture 34 comprend plusieurs profilés complémentaires, comme illustré dans les figures 3 à 9, de préférence entre trois et six profilés complémentaires, par exemple cinq.In one embodiment, each closure element 34 comprises several complementary profiles, as illustrated in figures 3 to 9 , preferably between three and six complementary profiles, for example five.

La présence de plusieurs profilés complémentaires 34 permet en effet de faciliter la mise en prise de l'ensemble de fermeture 3 depuis les faces externes des parois 10, 20 du sachet 1, en réduisant la précision nécessaire pour garantir leur fermeture. Elle assure par ailleurs une meilleure résistance aux sollicitations internes et externes des parois 10, 20 du sachet 1.The presence of several complementary profiles 34 indeed makes it possible to facilitate the engagement of the closure assembly 3 from the external faces of the walls 10, 20 of the bag 1, while reducing the precision necessary to guarantee their closure. It also ensures better resistance to internal and external stresses of the walls 10, 20 of the bag 1.

Les profilés complémentaires 34 peuvent être de type mâle/femelle, mâle / mâle (profilés en forme de flèche, comme illustré sur les figures) velours/crochets, ou encore de type crochets complémentaires.The complementary profiles 34 may be of the male / female, male / male type (arrow-shaped profiles, as illustrated in the figures) velor / hooks, or else of the complementary hook type.

Les profilés complémentaires 34 peuvent être altérés séquentiellement en formant des altérations successives le long des profilés complémentaires 34 suivant une direction transversale aux voiles support. Les altérations séquentielles sont des modifications locales séquentielles des profilés complémentaires 34, qui peuvent notamment comprendre des écrasements séquentiels et/ou des incisions séquentielles sans enlèvement de matière (c'est-à-dire soit uniquement des écrasements séquentiels, soit uniquement des incisions séquentielles, soit à la fois des écrasements séquentiels et des incisions séquentielles) et/ou des encoches séquentielles avec enlèvement de matière. On pourra se référer notamment à la demande internationale N° EP2012/073186 (publication WO 2013/076120 A1 ) au nom de la Demanderesse, qui décrit des exemples de réalisation d'altérations séquentielles.The complementary profiles 34 can be altered sequentially by forming successive alterations along the complementary profiles 34 in a direction transverse to the support webs. The sequential alterations are sequential local modifications of the complementary profiles 34, which may in particular comprise sequential crushings and / or sequential incisions without removing material (that is to say either only sequential crushings, or only sequential incisions, either sequential crushing and sequential incisions) and / or sequential notches with material removal. Reference may be made in particular to international application No. EP2012 / 073186 (publication WO 2013/076120 A1 ) in the name of the Applicant, which describes examples of the realization of sequential alterations.

Dans une forme de réalisation, tout ou partie des profilés complémentaires 34 peuvent comprendre les altérations séquentielles. Ainsi, plusieurs profilés complémentaires 34 peuvent comprendre des altérations séquentielles tandis qu'au moins un profilé complémentaire 34 peut rester intact, ou inversement.In one embodiment, all or part of the complementary profiles 34 may include the sequential alterations. Thus, several complementary profiles 34 may include sequential alterations while at least one complementary profile 34 may remain intact, or vice versa.

Dans ce qui suit, des exemples d'ensembles de fermeture 3 vont à présent être décrits en relation avec les figures 1 à 4 annexées. Il s'agit cependant d'exemples de réalisation non limitatifs, dans la mesure où l'invention, dans la limite des revendications jointes, s'applique à tout ensemble de fermeture 3 comportant des voiles support 30, 32, venus de matière sur les parois 10, 20 du sachet 1 ou rapportés et fixés sur lesdites parois 10, 20, comportant des éléments de fermeture 34.In the following, examples of closure assemblies 3 will now be described in relation to the figures 1 to 4 annexed. However, these are non-limiting exemplary embodiments, insofar as the invention, within the limits of the appended claims, applies to any closure assembly 3 comprising support webs 30, 32, integrally formed on the walls 10, 20 of the bag 1 or attached and fixed to said walls 10, 20, comprising closure elements 34.

Dans ces exemples de réalisation, le deuxième voile support 32 peut être articulé sur la deuxième paroi 20 de sorte que la traction sur les parois du sachet 1, lorsque les éléments de fermeture 34 complémentaires sont en prise, entraine la rotation des voiles support 30, 32 autour desdits éléments de fermeture 34 complémentaires.In these exemplary embodiments, the second support web 32 can be articulated on the second wall 20 so that the traction on the walls of the bag 1, when the complementary closure elements 34 are in position. taken, causes the rotation of the support webs 30, 32 around said complementary closure elements 34.

Selon un premier exemple de réalisation illustré en figure 1, le deuxième voile support 32 est fixé sur la deuxième paroi 20 dans une zone localisée 33 qui n'est pas superposée avec l'élément de fermeture 34 et qui est décalée par rapport audit élément de fermeture 34, de sorte que le deuxième voile support 32 est articulé sur la deuxième paroi 20. Une telle fixation a par exemple été décrite dans le document FR 2 628 067 au nom de la Demanderesse.According to a first exemplary embodiment illustrated in figure 1 , the second support web 32 is fixed to the second wall 20 in a localized zone 33 which is not superimposed with the closure element 34 and which is offset with respect to said closure element 34, so that the second support web 32 is articulated on the second wall 20. Such a fixing has for example been described in the document FR 2 628 067 on behalf of the Claimant.

Comme cela est décrit dans le document FR 2 628 067 , la disposition qui précède permet d'éviter que la pression interne au sachet 1 ne soit appliquée aux éléments de fermeture 34 et tende à séparer ceux-ci. En effet, grâce cette disposition, la séparation des parois du sachet 1 (afin d'ouvrir ce dernier) conduit à un possible pivotement du voile support au niveau de la zone charnière formée par sa fixation, sans risque de séparation des éléments de fermeture 34.As described in the document FR 2 628 067 , the above arrangement makes it possible to prevent the pressure inside the bag 1 from being applied to the closure elements 34 and tends to separate them. Indeed, thanks to this arrangement, the separation of the walls of the bag 1 (in order to open the latter) leads to a possible pivoting of the support web at the level of the hinge zone formed by its fixing, without risk of separation of the closure elements 34 .

Dans le document FR 2 628 067 , la zone localisée s'étend au niveau de la partie supérieure 32a du deuxième voile support 32 afin d'éviter les risques d'ouverture du sachet 1 résultant de la pression interne appliquée par le contenu du sachet 1 sur l'ensemble de fermeture 3.In the document FR 2 628 067 , the localized zone extends at the level of the upper part 32a of the second support web 32 in order to avoid the risks of opening of the bag 1 resulting from the internal pressure applied by the contents of the bag 1 on the closure assembly 3 .

En variante, la zone localisée peut s'étendre dans la partie inférieure 32b du deuxième voile support 32 afin d'empêcher l'ouverture du sachet 1 depuis l'extérieur. Pour réduire encore les possibilités d'ouverture du sachet 1, notamment par des enfants, la partie supérieure 32a du deuxième voile support 32 peut être de hauteur réduite. De la sorte, la saisie du deuxième voile support 32 ne pourra pas être possible, rendant ainsi nécessaire l'utilisation du passage 40. Par exemple, la hauteur du deuxième voile support 32 peut être inférieure à la hauteur de l'élément de fermeture 34. Dans un exemple de réalisation, la hauteur de la partie supérieure du deuxième voile support peut être inférieure ou égale à 1 mm.As a variant, the localized zone can extend into the lower part 32b of the second support web 32 in order to prevent the opening of the bag 1 from the outside. To further reduce the possibilities of opening the bag 1, in particular by children, the upper part 32a of the second support web 32 can be of reduced height. In this way, the gripping of the second support web 32 will not be possible, thus making it necessary to use the passage 40. For example, the height of the second support web 32 may be less than the height of the closure element 34. In an exemplary embodiment, the height of the upper part of the second support web may be less than or equal to 1 mm.

Selon une autre variante encore illustrée en figure 2, les deux voiles support 30, 32 peuvent être reliés à la paroi 10, 20 en regard au niveau d'une zone localisée 31, 33. Les zones localisées 31, 33 peuvent être disposées sur des parties respectives opposées des voiles support 30, 32 (ici la partie supérieure 30a et la partie inférieure 32b), respectivement de part et d'autre des éléments de fermeture 34 complémentaire, de sorte que l'un des voiles articulés (ici le premier voile support 30) est dirigé vers l'intérieur du sachet 1 tandis que l'autre voile articulé (ici le deuxième voile support 32) est dirigé vers son embouchure. Une telle configuration est par exemple décrite dans le document FR 2 963 927 au nom de la Demanderesse, et illustrée en figure 2. De manière alternative, les zones localisées 31, 33 peuvent être disposées sur des parties respectives des voiles support 30, 32 qui s'étendent en regard, c'est-à-dire sur les parties supérieures 30a, 32a des voiles 30, 32 ou sur leur partie inférieure 30b, 32b.According to another variant further illustrated in figure 2 , the two support webs 30, 32 can be connected to the wall 10, 20 opposite at the level of a localized zone 31, 33. The localized zones 31, 33 can be arranged on respective opposite parts of the support webs 30, 32 (here the upper part 30a and the lower part 32b), respectively on either side of the complementary closure elements 34, so that one of the articulated webs (here the first support web 30) is directed inwards bag 1 while the other articulated veil (here the second support veil 32) is directed towards its mouth. Such a configuration is for example described in the document FR 2 963 927 in the name of the Applicant, and illustrated in figure 2 . Alternatively, the localized zones 31, 33 can be arranged on respective parts of the support webs 30, 32 which extend opposite, that is to say on the upper parts 30a, 32a of the webs 30, 32 or on their lower part 30b, 32b.

Selon un deuxième exemple de réalisation illustré en figure 3, le premier et le deuxième voile support 30, 32 peuvent être reliés à la première et à la deuxième paroi 10, 20 par l'intermédiaire d'un premier et d'un deuxième voile d'extension 12, 14, respectivement, l'un au moins des voiles support 30, 32 étant fixé au voile d'extension à distance de sa partie supérieure 30a, 32a. Une telle fixation a par exemple été décrite dans la demande FR 14 58288 (publication FR 3 025 499 ) au nom de la Demanderesse.According to a second exemplary embodiment illustrated in figure 3 , the first and the second support web 30, 32 can be connected to the first and the second wall 10, 20 by means of a first and a second extension web 12, 14, respectively, the at least one of the support webs 30, 32 being fixed to the extension web at a distance from its upper part 30a, 32a. Such a binding has for example been described in the application FR 14 58288 (publication FR 3 025 499 ) on behalf of the Claimant.

Dans la demande FR 14 58288 , le voile support 30, 32 peut être fixé au voile d'extension correspondant 12, 14 dans une zone adjacente à l'élément de fermeture 34 complémentaire porté par ledit voile support 30, 32. Dans une variante de réalisation, les deux voiles support 30, 32 sont chacun reliés à un voile d'extension 12, 14 associé.In demand FR 14 58288 , the support web 30, 32 can be fixed to the corresponding extension web 12, 14 in an area adjacent to the complementary closure element 34 carried by said support web 30, 32. In an alternative embodiment, the two support webs 30, 32 are each connected to an associated extension web 12, 14.

Selon un troisième exemple de réalisation illustré en figure 4, le sachet 1 comprend en outre une paroi supplémentaire 16 présentant un premier pan 17 et un deuxième pan 18. Le premier pan 17 de la paroi supplémentaire 16 est relié à la deuxième paroi 20 à proximité de l'embouchure du sachet 1 tandis que le deuxième pan 18 est relié à la première paroi 10. La paroi supplémentaire 16 est pliée entre le premier pan 17 et le deuxième pan 18 le long d'un pli 19 de sorte que le deuxième pan 18 s'étend en direction de l'embouchure. Par ailleurs, le premier voile support 30 est en outre fixé sur la deuxième paroi 20 et le deuxième voile support 32 est fixé sur le deuxième pan 18 de la paroi supplémentaire 16. Une telle fixation a par exemple été décrite dans la demande FR 15 53143 (publication FR 3 034 760 ) au nom de la Demanderesse.According to a third exemplary embodiment illustrated in figure 4 , the bag 1 further comprises an additional wall 16 having a first panel 17 and a second panel 18. The first panel 17 of the additional wall 16 is connected to the second wall 20 near the mouth of the bag 1 while the second panel 18 is connected to the first wall 10. The additional wall 16 is folded between the first panel 17 and the second panel 18 along a fold 19 so that the second flap 18 extends towards the mouth. Furthermore, the first support web 30 is also fixed to the second wall 20 and the second support web 32 is fixed to the second panel 18 of the additional wall 16. Such a fastening has for example been described in the application. FR 15 53143 (publication FR 3,034,760 ) on behalf of the Claimant.

Dans la demande FR 15 53143 , le deuxième pan 18 de la paroi supplémentaire 16 peut en outre être fixé à proximité des côtés latéraux de la première paroi 10, entre le deuxième voile support 32 et le pli 19 afin de rendre plus difficile l'ouverture du sachet 1 par simple traction sur l'embouchure.In demand FR 15 53143 , the second panel 18 of the additional wall 16 can also be fixed near the lateral sides of the first wall 10, between the second support web 32 and the fold 19 in order to make it more difficult to open the bag 1 by simple traction on the mouth.

Les parois 10, 20 du sachet 1 peuvent être réalisées dans un matériau opaque (non transparent), de manière à réduire la possibilité pour des enfants de voir l'ensemble de fermeture 3 à travers les parois 10, 20.The walls 10, 20 of the bag 1 can be made of an opaque (non-transparent) material, so as to reduce the possibility for children to see the closure assembly 3 through the walls 10, 20.

Les parois 10, 20, les voiles support 30, 32 et les éléments de fermeture complémentaires 34 peuvent être réalisés dans un seul et unique matériau, notamment l'un des matériaux suivants : du polypropylène PP, du poly(téréphtalate d'éthylène) PET, du polyéthylène PE, du polyéthylène haute densité PEHD, du polyéthylène basse densité PEBD et leurs copolymères associés, des copolymères d'éthylène et/ou des copolymères de propylène.The walls 10, 20, the support webs 30, 32 and the complementary closure elements 34 can be made from a single material, in particular one of the following materials: polypropylene PP, poly (ethylene terephthalate) PET , polyethylene PE, high density polyethylene HDPE, low density polyethylene LDPE and their associated copolymers, ethylene copolymers and / or propylene copolymers.

En variante, ces différents éléments du sachet 1 peuvent être réalisés dans des matériaux différents. On pourra notamment citer, de manière non limitatives, un sachet 1 comprenant une première paroi 10 et une deuxième paroi 20 réalisées en poly(téréphtalate d'éthylène) et/ou en en polyéthylène et un ensemble de fermeture 3 (voiles support 30, 32 et éléments de fermeture complémentaires 34) en polypropylène.As a variant, these different elements of the bag 1 can be made from different materials. Mention may in particular be made, in a nonlimiting manner, of a bag 1 comprising a first wall 10 and a second wall 20 made of poly (ethylene terephthalate) and / or of polyethylene and a closure assembly 3 (support webs 30, 32 and additional closing elements 34) in polypropylene.

Par ailleurs, la première et la deuxième paroi 10, 20 peuvent présenter une épaisseur comprise entre 30 micromètres et 200 micromètres, typiquement de l'ordre de 60 micromètres à 150 micromètres, notamment lorsque lesdites parois sont formées dans l'un des matériaux décrits ci-dessus. On comprendra bien entendu que ces parois peuvent être réalisées dans des matériaux complexes comprenant plusieurs couches de matériaux différents.Furthermore, the first and the second wall 10, 20 may have a thickness of between 30 micrometers and 200 micrometers, typically of the order of 60 micrometers to 150 micrometers, in particular when said walls are formed from one of the materials described below. -above. It will of course be understood that these walls can be made of complex materials comprising several layers of different materials.

Claims (14)

  1. A bag (1) comprising:
    - a first and a second wall (10, 20) connected together so as to define lateral sides and a bottom (2) of the bag (1),
    - a closure assembly (3) comprising a first and a second support web (30, 32) respectively connected to the first and the second wall (10, 20) and each including a complementary closure element (34),
    - the first support web (30) has an upper edge and a lower edge, the lower edge being closer to the bottom (2) of the bag (1) than the upper edge, the first support web (30) being moreover divided into a lower portion (30b) and an upper portion (30a), the lower portion (30b) being closer to the bottom (2) than the upper portion (30a) and carrying the closure element (34),
    the upper edge of the first support web (30) being discontinuously connected to the first wall (10) of the bag (1) such that:
    - the upper edge of the first support web (30) is continuously fixed on the first wall along a first section (A) and is continuously separated from said first wall (10) along a second section (B), and
    - the lower portion of the first support web (30) is continuously fixed on the first wall (10) along the second section (B) over all or part of its height, so as to provide at least one passage (40) between this first support web (30) and the first wall (10) of the bag (1) from the outside of the bag (1),
    said bag (1) being characterized in that the passage (40) has a length, in the direction extending between the sides of the bag (1), comprised between 12 mm and 35 mm, said passage (40) allowing a local deformation of the first support web (30) capable of modifying the local relative orientation of the closure elements (34) during a spacing of the walls (10, 20) of the bag (1) and facilitating the separation of the complementary closure elements (34).
  2. The bag (1) according to claim 1, wherein the lower edge of the first support web (30) is continuously connected to the first wall (10) between the lateral sides of the bag (1).
  3. The bag (1) according to one of claims 1 to 2, wherein the upper portion (30a) of the first support web (30) is discontinuously connected to the first wall (10) so as to provide the passage (40).
  4. The bag (1) according to one of claims 1 to 3, wherein the upper portion (30a) of the first support web (30) is locally cut out so as to form the passage (40).
  5. The bag (1) according to one of claims 1 to 4, wherein the second support web (32) is hinged on the second wall (20) so that tension on the walls (10, 20) of the bag (1) when the complementary closure elements (34) are engaged causes rotation of the support webs (30, 32) around said complementary closure elements (34).
  6. The bag (1) according to claim 5, wherein the second support web (32) is fixed on the second wall (20) in a localized zone (33) which is not superimposed with the closure element (34) of the second support web (32) and which is offset with respect to said closure element (34) of the second support web (32) so that the second support web (32) is hinged on the second wall (20).
  7. The bag (1) according to claim 6, wherein the second support web (32) is divided into a lower portion (32b) and an upper portion (32a), the lower portion being closer to the bottom (2) than the upper portion (32a) and carrying the closure element (34) of the second support web (32), and wherein the localized zone (33) at which the second support web (32) is fixed on the second wall (20) is part of the lower portion (32b) of said second support web (32).
  8. The bag (1) according to claim 7, wherein the upper portion (32a) of the second support web (32) has a height less than a height of the closure element (34) of the second support web (32).
  9. The bag (1) according to claim 8, wherein the first and the second support web (32) are connected to the first and second walls (10, 20) through a first and a second extension web (12, 14) respectively, at least one of the support webs (30, 32) being fixed to the extension web (12, 14) at a distance from its upper edge.
  10. The bag (1) according to claim 9, wherein the at least one support web (30, 32) is fixed to the corresponding extension web (12, 14) in a zone adjacent to the complementary closure element (34) carried by said support web (30, 32).
  11. The bag (1) according to claim 5, further comprising an additional wall (16) having a first panel (17) and a second panel (18), the first panel (17) being connected to the second wall (20) in proximity to the mouth of the bag (1) while the second panel (18) is connected to the first wall (10), said additional wall (16) being folded between the first panel (17) and the second panel (18) along a fold (1) so that the first panel (17) extends towards the bottom (2), and wherein:
    - the first support web (30) is further fixed on the second wall (20), and
    - the second support web (32) is further fixed on the second panel (18) of the additional wall (16).
  12. The bag (1) according to claim 11, wherein the second panel (18) of the additional wall (16) is fixed in proximity to the lateral edges of the first wall (10), between the second support web (32) and the fold (19).
  13. The bag (1) according to one of claims 1 to 12, wherein the complementary closure elements (34) each comprise at least one complementary profile, preferably at least two complementary profiles, for example between three and six complementary profiles.
  14. The bag (1) according to claim 13, wherein all or part of the complementary profiles (34) comprise sequential alterations substantially parallel to the lateral sides, typically sequential crushings.
EP16790555.3A 2015-10-28 2016-10-28 Sachet having a concealed opening Active EP3368434B1 (en)

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FR1560314A FR3043070B1 (en) 2015-10-28 2015-10-28 BAG HAVING A MASKED OPENING
PCT/EP2016/076043 WO2017072282A1 (en) 2015-10-28 2016-10-28 Sachet having a concealed opening

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EP (1) EP3368434B1 (en)
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CA (1) CA3003537C (en)
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FR (1) FR3043070B1 (en)
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WO2017072282A1 (en) 2017-05-04
FR3043070B1 (en) 2019-06-21
CA3003537A1 (en) 2017-05-04
JP6538278B2 (en) 2019-07-03
JP2018531849A (en) 2018-11-01
CA3003537C (en) 2019-06-11
US20180312301A1 (en) 2018-11-01
PL3368434T3 (en) 2021-07-26
EP3368434A1 (en) 2018-09-05
MX2018005338A (en) 2018-05-17
MX370220B (en) 2019-12-05
US10450107B2 (en) 2019-10-22
ES2843956T3 (en) 2021-07-21
FR3043070A1 (en) 2017-05-05

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