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EP3280651B1 - Pouch having a concealed opening - Google Patents

Pouch having a concealed opening Download PDF

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Publication number
EP3280651B1
EP3280651B1 EP16719036.2A EP16719036A EP3280651B1 EP 3280651 B1 EP3280651 B1 EP 3280651B1 EP 16719036 A EP16719036 A EP 16719036A EP 3280651 B1 EP3280651 B1 EP 3280651B1
Authority
EP
European Patent Office
Prior art keywords
bag
wall
support
support web
complementary
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16719036.2A
Other languages
German (de)
French (fr)
Other versions
EP3280651A1 (en
Inventor
Romain MARTIAL
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
S2F Flexico SARL
Original Assignee
S2F Flexico SARL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR1553143A external-priority patent/FR3034760B1/en
Priority claimed from FR1560314A external-priority patent/FR3043070B1/en
Application filed by S2F Flexico SARL filed Critical S2F Flexico SARL
Priority to PL16719036T priority Critical patent/PL3280651T3/en
Publication of EP3280651A1 publication Critical patent/EP3280651A1/en
Application granted granted Critical
Publication of EP3280651B1 publication Critical patent/EP3280651B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • B65D33/255—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 being provided with special visual, audible or tactile indicating means, e.g. indicating proper engagement

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 devices for this purpose comprise two complementary profiles, for example of the male / female type or velvet type / hooks, or type of complementary hooks, carried by respective support webs.
  • the document FR 2 628 067 has in particular proposed a bag comprising two main walls comprising two complementary closure profiles carried by respective support webs respectively fixed on the walls.
  • the fixing zone of the support web on the wall is not superimposed on the male section but offset with respect thereto in order to articulate the corresponding support web on the wall at the level of the fastening zone.
  • the preceding arrangement prevents the internal pressure of the bag is applied to the closure profiles and tends to separate them. Indeed, the separation of the walls of the bag (to open the latter) leads to a possible pivoting of the support web at the hinge zone formed by its fixing, without risk of separation of the closure profiles.
  • Sachets meeting this provision have already rendered great service and make the reopening of the bag difficult, so as to assure its user that its contents can not come out easily.
  • Such a bag finds, for example, application in the field of the packaging of harmful products, such as laundry tablets. Indeed, it is important to be able to guarantee users that the bag remains closed between two uses, in particular to prevent children from accessing its contents, while leaving the possibility for parents to open and close the bag. repeatedly without the risk of damaging it, and preferably without the successive openings and closings are too difficult.
  • a first object of the invention is therefore to provide a bag comprising opening / closing means, for example and not limited to the form of complementary profiles, and having a system for easily opening said opening / closing means.
  • opening / closing means for example and not limited to the form of complementary profiles, and having a system for easily opening said opening / closing means.
  • the first support veil is connected discontinuously along its length to the first wall of the bag so as to provide at least one passage between the first support veil and the first wall of the bag from the outside of the bag. This passage thus allows local deformation of the first support web clean to change the local relative orientation of the closure elements during a separation of the walls of the bag and facilitates the separation of the complementary closure elements.
  • the second support web is hinged to 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.
  • a second objective is to provide a packaging bag that is able to withstand the internal and external stresses of the walls of the bag, while allowing easy opening and closing of its mouth by a user other than a child, in particular to prevent access to the inside of the bag to children while guaranteeing the user the possibility of opening and closing the bag several times without risk of damaging it.
  • the additional wall is folded between the first pan and the second pan along a fold, so that the second pan extends towards the upper edge of the first wall. Furthermore, the first support veil and the second support veil are fixed on the first wall, the second support veil being further fixed on the second panel of the additional wall so that a biasing stress of the first and second wall of the bag when the complementary profiles are engaged causes a rotation of the closure device around the second support web.
  • a bag 1 comprises, in a conventional manner per se, a first and a second wall 10, 20 connected together so as to define lateral sides and a bottom 2 of the bag 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 on itself and welded on two sides or of several sheets, for example two sheets welded together at their sides, preferably along ridges connecting the walls and forming the lateral sides and the bottom 2 of the bag 1.
  • the bag 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 second walls 10, 20.
  • Each support web 30, 32 carries at least one complementary closure element 34, for example complementary profile type, velvet band / hook, etc.
  • the first support veil 30 has an upper portion 30a and a lower portion 30b, the upper portion 30a being closer to the mouth of the bag 1 than the lower portion 30b.
  • the lower part 30b also carries all or part of the closure element 34.
  • the first veil support 30 is connected discontinuously along its length to the first wall 10 of the bag 1 so as to provide at least one passage between the first support veil 30 and the first wall 10 of the bag 1, from outside the bag 1 .
  • the passage 40 makes it possible to locate the point of application of the force at the closure element 34 of the first support veil 30, or even of the lower part of the first support veil 30 (according to the height of the passage 40 ) (see it figure 8b ). In this way, in the cases where the second support veil 32 is articulated, during the separation of the walls, the gripping of the first wall 10 behind the first support veil 30 makes it possible to limit the rotation of the closure assembly 3 and so bring closer to the direction separating the direction of application of the force on the closure elements 34.
  • the support web 30, 32 is either attached and fixed, for example by welding, on the associated wall, either material (that is to say formed integrally and in one piece) with said wall 10, 20.
  • the weld can be of the thermal welding type, an ultrasonic weld, for example by points, or both (carried out successively).
  • first and the second support web 30, 32 can be connected according to the same or different techniques to the wall 10, 20 associated: for example, the first support web 30 can be attached and fixed on 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 veil 30, to allow the user to better block the movements of the first support veil 30.
  • the first support web 30 may 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 along its length to the first wall 10 of the bag 1, since it is not fixed on at least a part of its height to the first wall 10 along the second section. B.
  • the bag 1 may comprise more sections, including two disjoint sections in which the first support web 30 is not connected to the first wall 10 over part of its height.
  • the passage 40 may extend over the entire height of the upper part 30a of the first support veil 30, or even possibly to an area underlying the closure element 34.
  • the upper part 30a of the first support veil 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 portion 30a of the first support web 30 may comprise a local notch at the second section B and connected to the first wall 10 along the first and second sections A, C.
  • the notch may in particular be obtained by cutting from the upper part of the first support veil 30, at the level of the second section B.
  • the lower part 30b of the first support veil 30 is connected in a continuous manner 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 thus 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 veil 30 is connected to the first wall 10 (see FIG. figure 5 ). In this way, the user can introduce 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 the hatched area 44).
  • transverse welds 42 may further be made at the boundary between the first and second sections A, B of a on the border between the second and the third section B, C on the other hand (whatever the height on which the lower portion 30b is welded to the first wall). Note that such transverse welds 42, in addition to stiffening the attachment of the first support web 10, provide a seal between the outside and the inside of the bag 1 at the second section B, despite the presence of the passage 40.
  • the lower part 30b can be left free (as shown in FIG. figure 5 on which the hatched areas represent the welded portions 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 30b is then connected to the first wall 10 on one 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 bag 1, between 12 mm and 35 mm.
  • the passage 40 is closer to one side 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 solicited when handling the bag 1.
  • the edge of the passage 40 may extend at a distance of 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 member 34 comprises a plurality of complementary profiles, as illustrated in FIGS. Figures 3 to 11 preferably between three and six complementary sections, for example five.
  • the complementary profiles 34 may be male / female type, male / male (arrow-shaped profiles, as shown in the figures) velvet / hooks, or type complementary hooks.
  • 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 include sequential crushing and / or sequential incisions without material removal (ie either only sequential crashes or only sequential incisions, either sequential crushing and sequential incisions) and / or sequential notches with removal of material.
  • all or part of the complementary profiles 34 may include 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 connection with the Figures 1 to 4 attached. However, these are nonlimiting exemplary embodiments, insofar as the invention 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 on said walls 10, 20, having closure elements 34.
  • the second support veil 32 is articulated on the second wall 20 so that the traction on the walls of the bag 1, when the complementary closure elements 34 are engaged, causes the rotation of the carrier webs 30, 32 around said complementary closure elements 34.
  • the second support web 32 is fixed on the second wall 20 in a localized area 33 which is not superimposed with the closing element 34 and which is offset relative to said closure element 34, so that the second support veil 32 is articulated on the second wall 20.
  • Such attachment has for example been described in the document FR 2 628 067 in the name of the Applicant, whose content is incorporated herein by reference.
  • the preceding arrangement prevents the internal pressure of the bag 1 is 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 (to open the latter) leads to a possible pivoting of the support web at 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 veil 32 in order to avoid the risks of opening the bag 1 resulting from the internal pressure applied by the contents of the bag 1 to the closure assembly 3 .
  • the localized area may extend into the lower portion 32b of the second support web 32 to prevent opening of the bag 1 from the outside.
  • the upper portion 32a of the second support web 32 may be of reduced height. In this way, the capture of the second support web 32 can 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 portion of the second support web may be less than or equal to 1 mm.
  • the two supporting webs 30, 32 can be connected to the wall 10, 20 facing 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 hinged sails (here the first support veil 30) is directed inwards of the bag 1 while the other hinged sail (here the second support sail 32) is directed towards its mouth.
  • the localized zones 31, 33 may be arranged on respective parts of the support webs 30, 32 which extend opposite each other, 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 webs 30, 32 may be connected to the first and second walls 10, 20 via a first and a second extension web 12, 14, respectively, the at least one of the support webs 30, 32 being attached to the extension web at a distance from its upper part 30a, 32a.
  • a fixation has for example been described in the document FR 14 58288 in the name of the Applicant, whose content is incorporated herein by reference.
  • the support web 30, 32 can be attached 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 pan 17 and a second pan 18.
  • the first pan 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 may be formed integrally and in one piece with the second wall 20 of the bag 1, or alternatively reported and fixed on said second wall 20, near its edge higher so as to extend towards the bottom of the bag 1, or according to another variant still reported and fixed on said second wall 20 at a distance from its upper edge, for example in a region adjacent to the fold.
  • the additional wall 16 is folded between the first pan 17 and the second pan 18 along a fold 19 so that the second pan 18 extends towards the mouth.
  • first support veil 30 is also fixed on the second wall 20 and the second support veil 32 is fixed on the second panel 18 of the additional wall 16. More specifically, the first support veil 30 and the second support veil 32 are fixed on the first wall 10, the second support web 32 being further fixed on the second panel 18 of the additional wall 16, so that a biasing stress of the first and second wall 10, 20 of the bag 1 when the complementary profiles 34 are engaged causes a rotation of the closure device around the second support web 32.
  • first panel 17 of the additional wall 16 extends inwardly of the bag 1.
  • first panel 17 of the additional wall 16 may be welded to the lateral sides of the second wall 20, along two welding lines 17a (see Figure 4a ).
  • the second panel 18 of the additional wall 16 is fixed on the lateral sides of the first wall 10, at the level of the support webs 30, 32.
  • the second panel 18 of the additional wall 16 is furthermore welded to the lateral sides of the first wall 10, between the lower part 32b of the second support veil 32 and the fold 19 (see FIG. Figure 4a ) along two welding lines 16a.
  • the second support veil 32 therefore extends away from the fold 19 and is not fixed on the portion of the second wall 20 which extends opposite the first panel 17 of the additional wall 16.
  • this configuration has the advantage of allowing an alignment of the portion of the second wall 20 with the portion facing the first wall 10, as illustrated in FIG. figure 4c , when a user pulls on their upper edges of the bag 1 to access the interior of the bag 1.
  • the forces are thus mainly applied to the ends of the support webs 30, 32 which are fixed on the lateral sides of the first wall 10, a small portion of the forces being also applied to the lower portion 32b of the second support web 32 and the upper portion 30a of the first support web 30, in the plane of said webs 30, 32.
  • Such efforts are not likely to separate the complementary profiles 34 of the closure device.
  • first and second walls 10, 20 may be attached to one another along their lateral sides, between their lower edge and the fold 19, as shown in FIG. figure 4a .
  • first wall 10 and the second wall 20 can be fixed together along their lateral sides, that is to say from the bottom of the bag to their upper edge, by welding or gluing. .
  • the opening of the bag 1 by traction on the upper edges of the first and the second wall 10, 20 is even more difficult, the possible separation of the upper edges of the walls 10, 20 limiting the pivoting of the additional wall 16 and thus the force that can be applied to the complementary profiles 34.
  • the first support web 30 is fixed on the first wall 10 at its upper part 30a only, its lower part 30b remaining free with respect to the first wall 10.
  • This configuration makes it possible to increase the hinge effect of the device closing, by allowing the pivoting of the first support veil 30 during the separation of the walls 10, 20 of the bag 1.
  • the height of the upper portion 32a of the second support web 32 is such that said upper portion 30a does not project beyond complementary profiles 34 (as shown in FIGS. Figures 4b , 4c and 11 for example).
  • the complementary profiles 34 reach the limit of the support web 32.
  • the presence of the additional wall 16 and the fixing of the closure device at a distance from the upper edge of the walls 10, 20 make it possible to shift the closing device towards the inside of the bag 1 rather than at its mouth, which further reinforces the tendency of children to grasp the walls 10, 20 of the bag 1 rather than trying to grasp the support sails 30, 32, and reduces the risk of the child seeing the closure device when the bag 1 is placed on a support.
  • This tendency can be further reinforced by fixing the closing device so that the fold 19 extends at a distance d of the order of length of an inch of adult mouth (when the bag 1 is at rest), a distance d between 30 and 70 millimeters, typically of the order of forty millimeters for a bag 1 of a width of twenty centimeters (see figure 11 ).
  • An adult will have no difficulty in opening the bag 1, placing his shoot at the bottom of the fold 19, while a toddler will have difficulty to introduce his thumbs in the fold 19 and in the passage 40, its hands are too small.
  • the child can only grab the upper edges of the walls 10, 20, which does not open the bag 1.
  • 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 to make it more difficult to open the bag 1 by simple pulling on the mouth.
  • the figure 11 illustrates a fifth embodiment of a bag 1.
  • This fifth embodiment differs from the illustrated example in Figures 4a to 4c only in that the additional wall 16 is attached and fixed on the second wall 20.
  • the other characteristics described in connection with the fourth embodiment therefore apply mutatis mutandis to this fifth embodiment.
  • the second wall 20 may however be of similar length to that of the first wall 10, since it is not necessary to bend it to form the additional wall.
  • the additional wall 16 is however folded along the fold 19, between the first pan 17 and the second pan 18, so as to extend towards the mouth of the bag 1.
  • first panel 17 therefore also extends along the second wall 20, between its upper edge and the fold 19, while the second panel 18 which comprises the second support web 32 extends between the fold 19 and the free end of the additional wall 16.
  • the second support web 32 could also be attached and fixed on the additional wall 16.
  • the upper portion 32a of the second support web 32 may not extend beyond the complementary profiles 34.
  • the complementary profiles 34 may extend to the limit of second support sail 32.
  • the bag 1 thus obtained is therefore able to withstand the internal stresses (due to the bulk of the contents of the bag 1) and external (due to the action of a person - adult or child - on the mouth 2) walls 10, 20 of the bag 1, preventing any conventional opening of the bag 1 (by traction on the upper edges 10c, 20c of the walls 10, 20), even by an adult.
  • the bag 1 may be devoid of such a passage. It is then possible to pinch the sails support 30, 32 to move the complementary profiles 34 in opposite directions (shear). The free ends of the support webs 30, 32 being attached to the lateral sides of the first wall 10, this nipping has the effect of separating the complementary profiles 34 near one of these edges.
  • the difficulty of opening by squeezing the support webs 30, 32 can be adjusted by welding the lateral sides of the first and second walls 10, 20 over their entire height.
  • This difficulty can also be adjusted by changing the position of the closure device with respect to the fold 19 and / or the mouth of the bag 1.
  • the Applicant has found that the lower part 32b of the second support veil 32 was away from the fold 19, the more it was difficult to separate the complementary profiles by pinching, the additional wall 16 tending to dissipate the forces applied to the bag 1.
  • a distance between the limit of the complementary profiles 34 (at the bottom part 32b) and the fold 19 may for example be of the order of 5 to 30 mm, typically 25 mm.
  • the walls 10, 20 of the bag 1 may 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 supporting webs 30, 32 and the complementary closure elements 34 may be made of a single material, in particular one of the following materials: polypropylene PP, polyethylene 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 may be made of different materials.
  • a bag 1 comprising a first wall 10 and a second wall 20 made of polyethylene terephthalate and / or polyethylene and a closure assembly 3 (supporting webs 30, 32) may be mentioned in a non-limiting manner. and complementary closure members 34) of polypropylene.
  • first and second walls 10, 20 may have a thickness of between 30 micrometers and 200 micrometers, typically of the order of 60 micrometers to 150 micrometers, especially when said walls are formed in one of the materials described herein. -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)

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

ARRIERE-PLAN TECHNOLOGIQUEBACKGROUND

De nombreux sachets d'emballage et de nombreux dispositifs de fermeture à cet effet ont déjà été proposés.Many packaging bags and many 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 known closure devices for this purpose comprise two complementary profiles, for example of the male / female type or velvet type / hooks, or type of complementary hooks, 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 has in particular proposed a bag comprising two main walls comprising two complementary closure profiles carried by respective support webs respectively fixed on the walls. The fixing zone of the support web on the wall is not superimposed on the male section but offset with respect thereto in order to articulate the corresponding support web on the wall at the level of the fastening zone. As described in the document FR 2 628 067 , the preceding arrangement prevents the internal pressure of the bag is applied to the closure profiles and tends to separate them. Indeed, the separation of the walls of the bag (to open the latter) leads to a possible pivoting of the support web at 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.Sachets meeting this provision have already rendered great service and make the reopening of the bag difficult, so as to assure its user that its contents can not come out easily.

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 securing zones of the sails are located at a distance and on each side of the corresponding complementary profiles so that one of the hinged sails is directed towards the inside of the bag while the other hinged sail 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 bags are even more resistant to internal and external stresses of the walls of the bag, so much so that it is now very difficult to open them without damaging the closing device or the walls of the bag.

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 some cases, it may be necessary to be able to open the bag 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, for example, application in the field of the packaging of harmful products, such as laundry tablets. Indeed, it is important to be able to guarantee users that the bag remains closed between two uses, in particular to prevent children from accessing its contents, while leaving the possibility for parents to open and close the bag. repeatedly without the risk of damaging it, and preferably without the successive openings and closings are too difficult.

WO 2009/130177 A1 , JP 2000 072156 A et US 2014/270585 décrivent des sachets de l'art antérieur. WO 2009/130177 A1 , JP 2000 072156 A and US 2014/270585 describe sachets of the prior art.

RESUME DE L'INVENTIONSUMMARY OF THE INVENTION

Un premier 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.A first object of the invention is therefore to provide a bag comprising opening / closing means, for example and not limited to the form of complementary profiles, and having a system for easily opening said opening / closing means. Where appropriate, when the opening means are articulated on one and / or the other wall of the bag, the system must allow an adult to open a bag despite the hinge effect generated by the joint.

Pour cela, l'invention propose un sachet comprenant :

  • une première et une deuxième paroi reliées ensemble de manière à définir des côtés latéraux et un fond du sachet,
  • un ensemble de fermeture comprenant un premier et un deuxième voile support reliés respectivement à la première et à la deuxième paroi et comportant chacun un élément de fermeture complémentaire.
For this purpose, the invention proposes a sachet comprising:
  • a first and a second wall joined together to define lateral sides and a bottom of the bag,
  • a closure assembly comprising first and second support webs respectively connected to the first and second walls and each having a complementary closure element.

Le premier voile support est relié de manière discontinue sur sa longueur à la première paroi du sachet de façon à ménager au moins un passage entre ce premier voile support et la première paroi du sachet à partir de l'extérieur du sachet. Ce passage permet ainsi une déformation locale du premier voile support propre à modifier l'orientation relative locale des éléments de fermeture lors d'un écartement des parois du sachet et facilite la séparation des éléments de fermeture complémentaires.The first support veil is connected discontinuously along its length to the first wall of the bag so as to provide at least one passage between the first support veil and the first wall of the bag from the outside of the bag. This passage thus allows local deformation of the first support web clean to change the local relative orientation of the closure elements during a separation of the walls of the bag and facilitates the separation of the complementary closure elements.

Selon l'invention, 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 entraîne la rotation des voiles support autour desdits éléments de fermeture complémentaires.According to the invention, the second support web is hinged to 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.

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

  • le premier voile support présente un bord supérieur et un bord inférieur, le bord inférieur étant plus proche du fond du sachet que le bord supérieur et le bord supérieur étant relié de manière discontinue à la première paroi du sachet, de façon à ménager le passage,
  • le bord supérieur du premier voile support est fixé de manière continue à la premier paroi le long d'un premier tronçon et est séparé de manière continue de ladite première paroi le long d'un deuxième tronçon, et le bord inférieur du premier voile support est fixé de manière continue sur la première paroi le long du deuxième tronçon sur tout ou partie de sa hauteur,
  • le bord inférieur du premier voile support est relié à la première paroi de manière continue entre les côtés latéraux du sachet,
  • le premier 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 partie supérieure du premier voile support est reliée de manière discontinue à la première paroi de manière à ménager le passage,
  • le premier 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 partie supérieure du premier voile support est localement découpée de manière à ménager le passage,
  • le passage présente une longueur, suivant la direction s'étendant entre les côtés du sachet, comprise entre 12 mm et 35 mm,
  • le deuxième voile support est fixé sur la deuxième paroi dans une zone localisée qui n'est pas superposée avec l'élément de fermeture et qui est décalée par rapport audit élément de fermeture, 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,
  • 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 et le deuxième voile support (32) sont fixés sur la première 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 côtés 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.
Some preferred but non-limiting characteristics of the sachet described above are the following, taken individually or in combination:
  • the first support web has an upper edge and a lower edge, the lower edge being closer to the bottom of the bag than the upper edge and the upper edge being discontinuously connected to the first wall of the bag, so as to provide the passage,
  • the upper edge of the first support web is fixed continuously to the first wall along a first section and is continuously separated from said first wall along a second section, and the lower edge of the first support web is fixed continuously on the first wall along the second section over all or part of its height,
  • the lower edge of the first support web is connected to the first wall continuously between the lateral sides of the bag,
  • the first support veil 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 part upper part of the first support veil is connected in a discontinuous manner to the first wall so as to protect the passage,
  • the first support veil 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 upper part of the first support veil is locally cut in such a manner that to spare the passage,
  • the passage has a length, in the direction extending between the sides of the bag, between 12 mm and 35 mm,
  • the second support web is fixed on the second wall in a localized area which is not superimposed with the closure element and which is offset with respect to said closure element, so that the second support web is hinged to the second wall ,
  • the second support veil 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 veil is fixed support on the second wall is part of the lower part of said second support veil,
  • the upper part of the second support veil has a height less than a height of the closure element,
  • the first and second support webs are connected to the first and second walls via a first and a second extension web, respectively, at least one of the support webs being attached to the web remote extension of its upper edge,
  • the at least one support web is attached 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 pan and a second pan, the first pan being connected to the second wall near the mouth of the bag while the second pan is connected to the first wall, said additional wall being folded between the first pan and the second pan along a fold so that the first pan extends towards the bottom, and wherein the first support web and the second support web (32) are attached to the first wall , and the second support web is further attached to the second panel of the additional wall,
  • the second panel of the additional wall is fixed near the lateral sides of the first wall, between the second support web and the fold,
  • the complementary closure 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 crashes.

Un deuxième objectif est de proposer un sachet d'emballage qui soit capable de résister aux sollicitations internes et externes des parois du sachet, tout en autorisant une ouverture et une fermeture faciles de son embouchure par un usager autre qu'un enfant, afin notamment d'empêcher l'accès à l'intérieur du sachet à des enfants tout en garantissant à l'usager la possibilité d'ouvrir et de fermer à plusieurs reprises le sachet sans risquer de l'endommager.A second objective is to provide a packaging bag that is able to withstand the internal and external stresses of the walls of the bag, while allowing easy opening and closing of its mouth by a user other than a child, in particular to prevent access to the inside of the bag to children while guaranteeing the user the possibility of opening and closing the bag several times without risk of damaging it.

Pour cela, il est proposé un sachet comprenant :

  • une première et une deuxième paroi, comprenant chacune un bord inférieur et un bord supérieur reliés entre eux par des côtés latéraux,
  • un dispositif de fermeture comportant un premier et un deuxième voile support comprenant chacun au moins un profilé complémentaire, le premier et le deuxième voile support étant fixés à proximité des côtés latéraux de la deuxième paroi, et
  • une paroi supplémentaire, comprenant un premier pan et un deuxième pan, le premier pan étant fixé le long du bord supérieur de la deuxième paroi tandis que le deuxième pan est fixé sur la première paroi.
For this, it is proposed a bag comprising:
  • a first and a second wall, each comprising a lower edge and an upper edge interconnected by lateral sides,
  • a closure device comprising a first and a second support web each comprising at least one complementary profile, the first and second support webs being secured near the lateral sides of the second wall, and
  • an additional wall, comprising a first pan and a second pan, the first pan being fixed along the upper edge of the second wall while the second pan is fixed on the first wall.

La paroi supplémentaire est pliée entre le premier pan et le deuxième pan le long d'un pli, de sorte que le deuxième pan s'étend en direction du bord supérieur de la première paroi. Par ailleurs, le premier voile support et le deuxième voile support sont fixés sur la première paroi, le deuxième voile support étant en outre fixé sur le deuxième pan de la paroi supplémentaire de sorte qu'une sollicitation en écartement de la première et de la deuxième paroi du sachet lorsque les profilés complémentaires sont en prise entraine une rotation du dispositif de fermeture autour du deuxième voile support.The additional wall is folded between the first pan and the second pan along a fold, so that the second pan extends towards the upper edge of the first wall. Furthermore, the first support veil and the second support veil are fixed on the first wall, the second support veil being further fixed on the second panel of the additional wall so that a biasing stress of the first and second wall of the bag when the complementary profiles are engaged causes a rotation of the closure device around the second support web.

Certaines caractéristiques préférées mais non limitatives du sachet conforme à ce deuxième aspect sont les suivantes, prises seules ou en combinaison :

  • le deuxième pan de la paroi supplémentaire est fixé à proximité des côtés latéraux de la première paroi, entre le premier voile support et le pli,
  • le deuxième voile support comprend une partie supérieure portant l'au moins un profilé complémentaire et une partie inférieure s'étendant dans le prolongement de la partie supérieure, depuis le profilé complémentaire, la partie supérieure étant plus proche du bord supérieur de la première paroi que la partie inférieure et le deuxième voile support étant fixé sur la première paroi au niveau de la partie supérieure, la partie inférieure étant au moins partiellement libre par rapport à ladite première paroi,
  • un passage entre la partie supérieure et la première paroi est ménagé afin de former une zone d'accès à une région de la première paroi qui s'étend en regard de l'au moins un profilé complémentaire du deuxième voile support, de sorte que la partie supérieure est divisée en trois tronçons consécutifs entre les deux côtés latéraux de la première paroi, à savoir : un premier tronçon, s'étendant entre l'un des côtés latéraux de la première paroi et la zone d'accès, un deuxième tronçon, s'étendant le long de la zone d'accès, entre le premier tronçon et le troisième tronçon, et un troisième tronçon, s'étendant entre la zone d'accès et l'autre côté latéral de la première paroi,
  • le deuxième voile support est fixé le long du premier et du troisième tronçon, mais laissé libre par rapport à la première paroi le long du deuxième tronçon afin de former le passage, ledit passage passant entre la partie supérieure et la première paroi,
  • seule une région du deuxième voile support qui s'étend entre les profilés complémentaires et le bord supérieur de la première paroi est fixée sur la première paroi, la région portant l'au moins un profilé complémentaire étant libre par rapport à ladite première paroi, la partie supérieure comprenant une fente traversante le long du deuxième tronçon, à la limite des profilés complémentaires,
  • une région de la partie supérieure qui s'étend depuis l'au moins un profilés complémentaires le long du deuxième tronçon est découpée afin de former le passage, ledit passage passant entre la partie supérieure et la première paroi,
  • le deuxième tronçon de la partie supérieure s'étend sur une longueur comprise entre 1.5 centimètres et trois centimètres le long de la partie supérieure du deuxième voile support, par exemple entre 12 millimètres et trente-cinq millimètres,
  • la partie inférieure peut être fixée à la première paroi le long du deuxième tronçon et ainsi fermer le passage,
  • le premier voile support comprend une partie supérieure portant l'au moins un profilé complémentaire et une partie inférieure s'étendant dans le prolongement de la partie supérieure, depuis le profilé complémentaire, la partie supérieure étant plus proche du bord supérieur de la première paroi que la partie inférieure, et dans lequel une hauteur de la partie supérieure du premier voile support est sensiblement égale à une hauteur des profilés complémentaires, de sorte que la partie supérieure ne dépasse pas des profilés complémentaires,
  • la paroi supplémentaire est formée intégralement et en une seule pièce avec la deuxième paroi et s'étend dans le prolongement de ladite deuxième paroi, ou la paroi supplémentaire est rapportée et fixée sur la deuxième paroi, à proximité de son bord supérieur, de manière à s'étendre en direction du bord inférieur de ladite deuxième paroi, ou la paroi supplémentaire est rapportée et fixée sur la deuxième paroi, à distance de son bord supérieur, par exemple dans une région adjacente au pli,
  • le premier voile support est formé intégralement avec la paroi supplémentaire ou est rapporté et fixé sur la paroi supplémentaire,
  • la première paroi et la deuxième paroi sont soudées ensemble le long de leurs côtés latéraux entre le pli et leur bord supérieur,
  • le deuxième voile support est fixé à distance du bord supérieur de la première paroi,
  • le pli s'étend à une distance comprise entre 30 et 70 millimètres, typiquement de l'ordre d'une quarantaine de millimètres, du bord supérieur de la deuxième paroi,
  • le premier et le deuxième voile support comprennent chacun au moins deux profilés complémentaires, de préférence au moins trois, par exemple entre trois et six, et/ou
  • tout ou partie des profilés complémentaires comprend des altérations séquentielles perpendiculaires au bord supérieur de la paroi associée, typiquement des écrasements séquentiels.
Some preferred but non-limiting characteristics of the bag according to this second aspect are the following, taken alone or in combination:
  • the second panel of the additional wall is fixed near the lateral sides of the first wall, between the first support web and the fold,
  • the second support web comprises an upper part carrying the at least one complementary profile and a lower part extending in the extension of the upper part, from the complementary profile, the upper part being closer to the upper edge of the first wall than the lower part and the second support web being fixed on the first wall at the level of the upper part, the lower part being at least partially free with respect to said first wall,
  • a passage between the upper part and the first wall is formed to form an access zone to a region of the first wall which extends opposite the at least one complementary section of the second support veil, so that the upper part is divided into three consecutive sections between the two lateral sides of the first wall, namely: a first section, extending between one of the lateral sides of the first wall and the access area, a second section, extending along the access zone, between the first section and the third section, and a third section, extending between the access zone and the other lateral side of the first wall,
  • the second support web is fixed along the first and third sections, but left free with respect to the first wall along the second section so as to form the passage, said passage passing between the upper part and the first wall,
  • only a region of the second support web which extends between the complementary profiles and the upper edge of the first wall is fixed on the first wall, the region carrying the at least one complementary section being free with respect to said first wall, the upper part comprising a through slot along the second section, at the limit of the complementary profiles,
  • a region of the upper part which extends from the at least one complementary section along the second section is cut to form the passage, said passage passing between the upper part and the first wall,
  • the second section of the upper part extends over a length of between 1.5 centimeters and three centimeters along the upper part of the second support veil, for example between 12 millimeters and thirty-five millimeters,
  • the lower part can be fixed to the first wall along the second section and thus close the passage,
  • the first support veil comprises an upper part carrying the at least one complementary profile and a lower part extending in the extension of the upper part, from the complementary profile, the upper part being closer to the upper edge of the first wall than the lower part, and wherein a height of the upper part of the first support veil is substantially equal to a height of the profiles complementary, so that the upper part does not exceed complementary profiles,
  • the additional wall is formed integrally and in one piece with the second wall and extends in the extension of said second wall, or the additional wall is attached and fixed on the second wall, near its upper edge, so as to extend towards the lower edge of said second wall, or the additional wall is attached and fixed to the second wall, at a distance from its upper edge, for example in a region adjacent to the fold,
  • the first support web is integrally formed with the additional wall or is attached and fixed to the additional wall,
  • the first wall and the second wall are welded together along their lateral sides between the fold and their upper edge,
  • the second support sail is fixed at a distance from the upper edge of the first wall,
  • the fold extends at a distance of between 30 and 70 millimeters, typically of the order of forty millimeters, from the upper edge of the second wall,
  • the first and second support webs each comprise at least two complementary profiles, preferably at least three, for example between three and six, and / or
  • all or part of the complementary profiles comprises sequential alterations perpendicular to the upper edge of the associated wall, typically sequential crashes.

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 conforme à l'invention, le sachet étant au repos,
  • La figure 2 illustre une vue en coupe transversale d'un deuxième exemple de réalisation d'un sachet conforme à l'invention, le sachet étant au repos,
  • La figure 3 illustre une vue en coupe transversale d'un troisième exemple de réalisation d'un sachet conforme à l'invention, le sachet étant au repos,
  • La figure 4a est une vue en perspective d'un quatrième exemple de réalisation d'un sachet conforme à l'invention,
  • La figure 4b illustre une vue en coupe transversale selon l'axe A-A du sachet de la figure 4a, lorsque le sachet est au repos,
  • La figure 4c illustre une vue en coupe transversale selon l'axe A-A du sachet de la figure 4a, lorsqu'une personne applique un effort de traction sur les parois du sachet pour séparer les profilés complémentaires du dispositif de fermeture,
  • 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 B-B illustré sur la figure 6a,
  • La figure 7 est une vue en coupe du sachet de la figure 6a, suivant l'axe A-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,
  • La figure 10 est une vue en perspective du sachet de la figure 5a après ouverture à l'aide du passage,
  • La figure 11 illustre une vue en coupe d'un cinquième exemple de sachet conforme à l'invention, lorsque le sachet est au repos.
Other features, objects and advantages of the present invention will appear better 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 illustrates a cross-sectional view of a first exemplary embodiment of a bag according to the invention, the bag being at rest,
  • The figure 2 illustrates a cross-sectional view of a second embodiment of a bag according to the invention, the bag being at rest,
  • The figure 3 illustrates a cross-sectional view of a third embodiment of a bag according to the invention, the bag being at rest,
  • The figure 4a is a perspective view of a fourth embodiment of a pouch according to the invention,
  • The figure 4b illustrates a cross-sectional view along the axis AA of the bag of the figure 4a when the bag is at rest,
  • The figure 4c illustrates a cross-sectional view along the axis AA of the bag of the figure 4a when a person applies a tensile force on the walls of the bag to separate the complementary profiles of the closure device,
  • The figure 5 is a detailed view of an embodiment of a passage allowing easy opening of a bag according to the invention,
  • The figure 6a is a view from above 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 way,
  • The figure 6b is a sectional view of the bag of the figure 6a along the BB axis shown on the figure 6a ,
  • The figure 7 is a sectional view of the bag of the figure 6a , along the axis AA illustrated on the figure 6a , when a user inserts one of his thumbs into the passage and places the other of his thumbs along the second wall,
  • The figure 8a is a view from above of the bag of the figure 6a when a user uses the pass 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 shown on the figure 7 ,
  • The figure 9 is a view from above of the bag of the figure 6a when the closing elements are separating,
  • The figure 10 is a perspective view of the bag of the figure 5a after opening using the passage,
  • The figure 11 illustrates a sectional view of a fifth example of a bag according to the invention, when the bag is at rest.

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 bag 1 comprises, in a conventional manner per se, a first and a second wall 10, 20 connected together so as to define lateral sides and a bottom 2 of the bag 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 on itself and welded on two sides or of several sheets, for example two sheets welded together at their sides, preferably along ridges connecting the 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 bag 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 second walls 10, 20. Each support web 30, 32 carries at least one complementary closure element 34, for example complementary profile type, velvet band / 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 veil 30 has an upper portion 30a and a lower portion 30b, the upper portion 30a being closer to the mouth of the bag 1 than the lower portion 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 able to modify the local relative orientation of the closure elements 34 during a separation of the walls of the bag 1 and to facilitate the opening of the closure assembly 3, the first veil support 30 is connected discontinuously along its length to the first wall 10 of the bag 1 so as to provide at least one passage between the first support veil 30 and the first wall 10 of the bag 1, from outside 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 whose 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 closing assembly 3 is conventional (not articulated). Indeed, to open the closure assembly 3, it is sufficient for a user:
  • to introduce one of its thumbs from the outside of the bag 1 - or by the mouth - so as to grip the second wall 20, preferably close to the closure element 34 of the second support veil 32,
  • to introduce its second thumb in the mouth of the bag 1 in the passage 40 formed between the first wall 10 and the first support veil 30 (see figure 7 ). In this position, the support webs are substantially parallel to each other, and
  • to remove the walls by applying a force on said walls with the first thumb and second thumb shown on the figure 8b ) extending 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 closure element 34 of the first support veil 30, or even of the lower part of the first support veil 30 (according to the height of the passage 40 ) (see it figure 8b ). In this way, in the cases where the second support veil 32 is articulated, during the separation of the walls, the gripping of the first wall 10 behind the first support veil 30 makes it possible to limit the rotation of the closure assembly 3 and so bring closer to the direction separating the direction of application of the force on the closure 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 illustrated on the Figures 6a and 6b when the user attempts to open conventionally a bag 1 having a hinge (zones 31 or 33), the tensile force applied to the walls 10, 20 has the effect of rotating the closure assembly and align with the direction of application of this effort (see the arrows on the figure 6b ), perpendicular to the direction of separation of the closing elements 34 (said direction of separation extending perpendicularly to the plane of the support webs 30, 32). As a result, the closure members 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, either material (that is to say formed integrally and in one piece) with said wall 10, 20. The weld can be of the thermal welding type, an ultrasonic weld, for example by points, 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 according to the same or different techniques to the wall 10, 20 associated: for example, the first support web 30 can be attached and fixed on 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 veil 30, to allow the user to better block the movements of the first support veil 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 may 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 côtés 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 côtés 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 on the figure 5 the first support veil 30 can be divided into three sections A, B, C:
  • a first section A which extends between one of the lateral sides of the bag 1 and the passage 40, in which the first support veil 30 is connected to the first wall 10,
  • a second section B, which extends along the passage 40, wherein the first support web 30 is not connected over at least a portion 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 sides of the bag 1 and the passage 40, in which the first support veil 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 along its length to the first wall 10 of the bag 1, since it is not fixed on at least a 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, here will be understood 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. Moreover, by height it will be understood 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 may comprise more sections, including two disjoint 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 may extend over the entire height of the upper part 30a of the first support veil 30, or even possibly to an area underlying the closure element 34. For this, the upper part 30a of the first support veil 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.Alternatively, the upper portion 30a of the first support web 30 may comprise a local notch at the second section B and connected to the first wall 10 along the first and second sections A, C. The notch may in particular be obtained by cutting from the upper part of the first support veil 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 veil 30 is connected in a continuous manner 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 thus 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 veil 30 is connected to the first wall 10 (see FIG. figure 5 ). In this way, the user can introduce 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 on the 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 the 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 attachment of the lower portion 30b of the first support web 30 to the first wall 10, transverse welds 42 may further be made at the boundary between the first and second sections A, B of a on the border between the second and the third section B, C on the other hand (whatever the height on which the lower portion 30b is welded to the first wall). Note that such transverse welds 42, in addition to stiffening the attachment of the first support web 10, provide a seal between the outside and the inside of the bag 1 at 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 30b est alors reliée à la première paroi 10 d'un côté latéral du sachet 1 à l'autre.At the first and third sections A, C, the lower part 30b can be left free (as shown in FIG. figure 5 on which the hatched areas represent the welded portions 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 30b is then connected to the first wall 10 on one 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 the thumb of an adult, the passage 40 has a length, in the direction of extension of the closure assembly 3 between the lateral sides of the bag 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 side 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 solicited when handling the bag 1. Typically, the edge of the passage 40 may extend at a distance of 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 11, de préférence entre trois et six profilés complémentaires, par exemple cinq.In one embodiment, each closure member 34 comprises a plurality of complementary profiles, as illustrated in FIGS. Figures 3 to 11 preferably between three and six complementary sections, 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 makes it possible to facilitate the engagement of the closure assembly 3 since the external faces of the walls 10, 20 of the bag 1, reducing the accuracy necessary to ensure their closure. It also ensures a better resistance to the 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 male / female type, male / male (arrow-shaped profiles, as shown in the figures) velvet / hooks, or type complementary hooks.

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 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 include sequential crushing and / or sequential incisions without material removal (ie either only sequential crashes or only sequential incisions, either sequential crushing and sequential incisions) and / or sequential notches with removal of material. We can refer in particular to the international application N ° EP2012 / 073186 in the name of the Applicant, which describes examples of 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 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 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 connection with the Figures 1 to 4 attached. However, these are nonlimiting exemplary embodiments, insofar as the invention 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 on said walls 10, 20, having closure elements 34.

Selon l'invention, le deuxième voile support 32 est 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 autours desdits éléments de fermeture 34 complémentaires.According to the invention, the second support veil 32 is articulated on the second wall 20 so that the traction on the walls of the bag 1, when the complementary closure elements 34 are engaged, causes the rotation of the carrier 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, dont le contenu est incorporé ici par référence.According to a first exemplary embodiment illustrated in figure 1 , the second support web 32 is fixed on the second wall 20 in a localized area 33 which is not superimposed with the closing element 34 and which is offset relative to said closure element 34, so that the second support veil 32 is articulated on the second wall 20. Such attachment has for example been described in the document FR 2 628 067 in the name of the Applicant, whose content is incorporated herein by reference.

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 preceding arrangement prevents the internal pressure of the bag 1 is 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 (to open the latter) leads to a possible pivoting of the support web at 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 veil 32 in order to avoid the risks of opening the bag 1 resulting from the internal pressure applied by the contents of the bag 1 to 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.Alternatively, the localized area may extend into the lower portion 32b of the second support web 32 to prevent opening of the bag 1 from the outside. To further reduce the possibilities of opening the bag 1, especially by children, the upper portion 32a of the second support web 32 may be of reduced height. In this way, the capture of the second support web 32 can 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 portion of the second support web may be less than or equal to 1 mm.

Selon une autre variante encore (deuxième mode de réalisation) 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, dont le contenu est incorporé ici par référence, 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 (second embodiment) illustrated in figure 2 , the two supporting webs 30, 32 can be connected to the wall 10, 20 facing 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 hinged sails (here the first support veil 30) is directed inwards of the bag 1 while the other hinged sail (here the second support sail 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, the content of which is hereby incorporated by reference, and illustrated in figure 2 . Alternatively, the localized zones 31, 33 may be arranged on respective parts of the support webs 30, 32 which extend opposite each other, that is to say on the upper parts 30a, 32a of the webs 30, 32 or on their lower part 30b, 32b.

Selon un troisième 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 le document FR 14 58288 au nom de la Demanderesse, dont le contenu est incorporé ici par référence.According to a third embodiment illustrated in figure 3 the first and the second support webs 30, 32 may be connected to the first and second walls 10, 20 via a first and a second extension web 12, 14, respectively, the at least one of the support webs 30, 32 being attached to the extension web at a distance from its upper part 30a, 32a. Such a fixation has for example been described in the document FR 14 58288 in the name of the Applicant, whose content is incorporated herein by reference.

Dans le document 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 the document FR 14 58288 the support web 30, 32 can be attached 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 quatrième exemple de réalisation illustré en figures 4a à 4c, 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 peut être formée intégralement et en une seule pièce avec la deuxième paroi 20 du sachet 1, ou en variante rapportée et fixée sur ladite deuxième paroi 20, à proximité de son bord supérieur de manière à s'étendre vers le fond du sachet 1, ou selon une autre variante encore rapportée et fixée sur ladite deuxième paroi 20 à distance de son bord supérieur, par exemple dans une région adjacente au pli. 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. Plus précisément, le premier voile support 30 et le deuxième voile support 32 sont fixés sur la première paroi 10, le deuxième voile support 32 étant en outre fixé sur le deuxième pan 18 de la paroi supplémentaire 16, de sorte qu'une sollicitation en écartement de la première et de la deuxième paroi 10, 20 du sachet 1 lorsque les profilés complémentaires 34 sont en prise entraine une rotation du dispositif de fermeture autour du deuxième voile support 32.According to a fourth embodiment illustrated in Figures 4a to 4c , the bag 1 further comprises an additional wall 16 having a first pan 17 and a second pan 18. The first pan 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 may be formed integrally and in one piece with the second wall 20 of the bag 1, or alternatively reported and fixed on said second wall 20, near its edge higher so as to extend towards the bottom of the bag 1, or according to another variant still reported and fixed on said second wall 20 at a distance from its upper edge, for example in a region adjacent to the fold. The additional wall 16 is folded between the first pan 17 and the second pan 18 along a fold 19 so that the second pan 18 extends towards the mouth. Furthermore, the first support veil 30 is also fixed on the second wall 20 and the second support veil 32 is fixed on the second panel 18 of the additional wall 16. More specifically, the first support veil 30 and the second support veil 32 are fixed on the first wall 10, the second support web 32 being further fixed on the second panel 18 of the additional wall 16, so that a biasing stress of the first and second wall 10, 20 of the bag 1 when the complementary profiles 34 are engaged causes a rotation of the closure device around the second support web 32.

Cette configuration permet de réduire drastiquement les risques d'ouverture du sachet 1 par un enfant en bas âge ainsi que les risques d'ouverture intempestive du sachet 1 en raison des sollicitations internes appliquées par le contenu du sachet 1 sur le dispositif de fermeture. En effet, l'écartement des bords supérieurs du sachet 1 ou des parois entre les voiles support et le fond du sachet 1 a pour effet de faire pivoter les voiles support 30, 32 du dispositif de fermeture et de les aligner avec l'axe d'application des efforts sur les parois (globalement horizontalement) grâce à la présence de la paroi supplémentaire 16 qui se déploie et à la fixation du premier voile support 30 sur la première paroi 10. De la sorte, tout effort supplémentaire sur les voiles supports 30, 32 est appliqué dans le plan des voiles support 30, 32, et non plus perpendiculairement à ceux-ci.This configuration drastically reduces the risks of opening of the bag 1 by a young child and the risk of inadvertent opening of the bag 1 because of the internal stresses applied by the contents of the bag 1 on the closure device. Indeed, the separation of the upper edges of the bag 1 or the walls between the support webs and the bottom of the bag 1 has the effect of rotating the sails support 30, 32 of the closure device and align them with the axis of application of the forces on the walls (generally horizontally) thanks to the presence of the additional wall 16 which is deployed and the fixing of the first support veil 30 on the first wall 10. In this way, any additional effort on the support webs 30, 32 is applied in the plane of the support webs 30, 32, and no longer perpendicular to them.

Dans une forme de réalisation, le premier pan 17 de la paroi supplémentaire 16 s'étend vers l'intérieur du sachet 1. Optionnellement, le premier pan 17 de la paroi supplémentaire 16 peut être soudé sur les côtés latéraux de la deuxième paroi 20, le long de deux lignes de soudure 17a (voir Figure 4a).In one embodiment, the first panel 17 of the additional wall 16 extends inwardly of the bag 1. Optionally, the first panel 17 of the additional wall 16 may be welded to the lateral sides of the second wall 20, along two welding lines 17a (see Figure 4a ).

Le deuxième pan 18 de la paroi supplémentaire 16 est fixé sur les côtés latéraux de la première paroi 10, au niveau des voiles support 30, 32.The second panel 18 of the additional wall 16 is fixed on the lateral sides of the first wall 10, at the level of the support webs 30, 32.

Ici, le deuxième pan 18 de la paroi supplémentaire 16 est en outre soudé sur les côtés latéraux de la première paroi 10, entre la partie inférieure 32b du deuxième voile support 32 et le pli 19 (voir Figure 4a) le long de deux lignes de soudure 16a. Dans cet exemple de réalisation, le deuxième voile support 32 s'étend donc à distance du pli 19 et n'est pas fixé sur la portion de la deuxième paroi 20 qui s'étend en regard du premier pan 17 de la paroi supplémentaire 16.Here, the second panel 18 of the additional wall 16 is furthermore welded to the lateral sides of the first wall 10, between the lower part 32b of the second support veil 32 and the fold 19 (see FIG. Figure 4a ) along two welding lines 16a. In this embodiment, the second support veil 32 therefore extends away from the fold 19 and is not fixed on the portion of the second wall 20 which extends opposite the first panel 17 of the additional wall 16.

On comprendra que cette configuration présente l'avantage de permettre un alignement de la portion de la deuxième paroi 20 avec la portion en regard de la première paroi 10, comme illustré sur la figure 4c, lorsqu'un utilisateur tire sur leurs bords supérieurs du sachet 1 en vue d'accéder à l'intérieur du sachet 1. Dans cette configuration, les efforts sont ainsi principalement appliqués sur les extrémités des voiles support 30, 32 qui sont fixées sur les côtés latéraux de la première paroi 10, une petite partie des efforts étant également appliquée sur la partie inférieure 32b du deuxième voile support 32 et sur la partie supérieure 30a du premier voile support 30, dans le plan desdits voiles 30, 32. De tels efforts ne sont toutefois pas susceptibles de séparer les profilés complémentaires 34 du dispositif de fermeture.It will be understood that this configuration has the advantage of allowing an alignment of the portion of the second wall 20 with the portion facing the first wall 10, as illustrated in FIG. figure 4c , when a user pulls on their upper edges of the bag 1 to access the interior of the bag 1. In this configuration, the forces are thus mainly applied to the ends of the support webs 30, 32 which are fixed on the lateral sides of the first wall 10, a small portion of the forces being also applied to the lower portion 32b of the second support web 32 and the upper portion 30a of the first support web 30, in the plane of said webs 30, 32. Such efforts However, they are not likely to separate the complementary profiles 34 of the closure device.

Dans cette configuration, la première et la deuxième paroi 10, 20 peuvent être fixées l'une sur l'autre le long de leurs côtés latéraux, entre leur bord inférieur et le pli 19, comme illustré sur la figure 4a.In this configuration, the first and second walls 10, 20 may be attached to one another along their lateral sides, between their lower edge and the fold 19, as shown in FIG. figure 4a .

En variante, la première paroi 10 et la deuxième paroi 20 peuvent être fixées ensemble sur toute leur hauteur le long de leurs côtés latéraux, c'est-à-dire du fond du sachet jusqu'à leur bord supérieur, par soudure ou par collage. Dans cette variante d'utilisation, l'ouverture du sachet 1 par traction sur les bords supérieurs de la première et de la deuxième paroi 10, 20 est encore plus difficile, l'écartement possible des bords supérieurs des parois 10, 20 limitant le pivotement de la paroi supplémentaire 16 et donc l'effort pouvant être appliqué sur les profilés complémentaires 34.In a variant, the first wall 10 and the second wall 20 can be fixed together along their lateral sides, that is to say from the bottom of the bag to their upper edge, by welding or gluing. . In this variant of use, the opening of the bag 1 by traction on the upper edges of the first and the second wall 10, 20 is even more difficult, the possible separation of the upper edges of the walls 10, 20 limiting the pivoting of the additional wall 16 and thus the force that can be applied to the complementary profiles 34.

Dans l'exemple des figures 4a à 4c, le premier voile support 30 est fixé sur la première paroi 10 au niveau de sa partie supérieure 30a uniquement, sa partie inférieure 30b restant libre par rapport à la première paroi 10. Cette configuration permet en effet d'augmenter l'effet charnière du dispositif de fermeture, en permettant le pivotement du premier voile support 30 lors de l'écartement des parois 10, 20 du sachet 1.In the example of Figures 4a to 4c , the first support web 30 is fixed on the first wall 10 at its upper part 30a only, its lower part 30b remaining free with respect to the first wall 10. This configuration makes it possible to increase the hinge effect of the device closing, by allowing the pivoting of the first support veil 30 during the separation of the walls 10, 20 of the bag 1.

Par ailleurs, la hauteur de la partie supérieure 32a du deuxième voile support 32 est telle que ladite partie supérieure 30a ne dépasse pas des profilés complémentaires 34 (comme illustré sur les figures 4b, 4c et 11 par exemple). En d'autres termes, les profilés complémentaires 34 arrivent à la limite du voile support 32.Furthermore, the height of the upper portion 32a of the second support web 32 is such that said upper portion 30a does not project beyond complementary profiles 34 (as shown in FIGS. Figures 4b , 4c and 11 for example). In other words, the complementary profiles 34 reach the limit of the support web 32.

On notera que la présence de la paroi supplémentaire 16 et la fixation du dispositif de fermeture à distance du bord supérieur des parois 10, 20 permettent de décaler le dispositif de fermeture vers l'intérieur du sachet 1 plutôt qu'au niveau de son embouchure, ce qui renforce encore la tendance des enfants à saisir les parois 10, 20 du sachet 1 plutôt que d'essayer de saisir les voiles support 30, 32, et réduit les risques que l'enfant voie le dispositif de fermeture lorsque le sachet 1 est posé sur un support.It will be noted that the presence of the additional wall 16 and the fixing of the closure device at a distance from the upper edge of the walls 10, 20 make it possible to shift the closing device towards the inside of the bag 1 rather than at its mouth, which further reinforces the tendency of children to grasp the walls 10, 20 of the bag 1 rather than trying to grasp the support sails 30, 32, and reduces the risk of the child seeing the closure device when the bag 1 is placed on a support.

Cette tendance peut encore être renforcée en fixant le dispositif de fermeture de sorte que le pli 19 s'étende à une distance d de l'ordre de la longueur d'un pouce d'adulte de l'embouchure (lorsque le sachet 1 est au repos), soit une distance d comprise entre 30 et 70 millimètres, typiquement de l'ordre d'une quarantaine de millimètres pour un sachet 1 d'une largeur d'une vingtaine de centimètres (voir figure 11). Un adulte n'aura ainsi aucune difficulté à ouvrir le sachet 1, en plaçant son pousse au fond du pli 19, tandis qu'un enfant en bas âge aura des difficultés pour introduire ses pouces dans le pli 19 et dans le passage 40, ses mains étant trop petites. L'enfant ne pourra donc que saisir les bords supérieurs des parois 10, 20, ce qui ne permet pas d'ouvrir le sachet 1.This tendency can be further reinforced by fixing the closing device so that the fold 19 extends at a distance d of the order of length of an inch of adult mouth (when the bag 1 is at rest), a distance d between 30 and 70 millimeters, typically of the order of forty millimeters for a bag 1 of a width of twenty centimeters (see figure 11 ). An adult will have no difficulty in opening the bag 1, placing his shoot at the bottom of the fold 19, while a toddler will have difficulty to introduce his thumbs in the fold 19 and in the passage 40, its hands are too small. The child can only grab the upper edges of the walls 10, 20, which does not open the bag 1.

Une telle fixation a par exemple été décrite dans le document FR 15 53143 au nom de la Demanderesse, dont le contenu est incorporé ici par référence.Such a fixation has for example been described in the document FR 15 53143 in the name of the Applicant, whose content is incorporated herein by reference.

Dans le document 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 the document 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 to make it more difficult to open the bag 1 by simple pulling on the mouth.

La figure 11 illustre un cinquième mode de réalisation d'un sachet 1.The figure 11 illustrates a fifth embodiment of a bag 1.

Ce cinquième mode de réalisation diffère de l'exemple illustré en figures 4a à 4c uniquement en ce que la paroi supplémentaire 16 est rapportée et fixée sur la deuxième paroi 20. Les autres caractéristiques décrites en relation avec le quatrième mode de réalisation s'appliquent donc mutatis mutandis à ce cinquième mode de réalisation.This fifth embodiment differs from the illustrated example in Figures 4a to 4c only in that the additional wall 16 is attached and fixed on the second wall 20. The other characteristics described in connection with the fourth embodiment therefore apply mutatis mutandis to this fifth embodiment.

La deuxième paroi 20 peut cependant être de longueur similaire à celle de la première paroi 10, puisqu'il n'est pas nécessaire de la plier pour former la paroi supplémentaire. La paroi supplémentaire 16 est cependant pliée le long du pli 19, entre le premier pan 17 et le deuxième pan 18, de manière à s'étendre en direction de l'embouchure du sachet 1.The second wall 20 may however be of similar length to that of the first wall 10, since it is not necessary to bend it to form the additional wall. The additional wall 16 is however folded along the fold 19, between the first pan 17 and the second pan 18, so as to extend towards the mouth of the bag 1.

Dans ce mode de réalisation, le premier pan 17 s'étend donc également le long de la deuxième paroi 20, entre son bord supérieur et le pli 19, tandis que le deuxième pan 18 qui comprend le deuxième voile support 32 s'étend entre le pli 19 et l'extrémité libre de la paroi supplémentaire 16.In this embodiment, the first panel 17 therefore also extends along the second wall 20, between its upper edge and the fold 19, while the second panel 18 which comprises the second support web 32 extends between the fold 19 and the free end of the additional wall 16.

On notera que, quel que soit le mode de réalisation, le deuxième voile support 32 pourrait également être rapporté et fixé sur la paroi supplémentaire 16.It will be noted that, whatever the embodiment, the second support web 32 could also be attached and fixed on the additional wall 16.

Par ailleurs, comme indiqué précédemment, la partie supérieure 32a du deuxième voile support 32 peut ne pas s'étendre au-delà des profilés complémentaires 34. En d'autres termes, les profilés complémentaires 34 peuvent s'étendre jusqu'à la limite du deuxième voile support 32.Furthermore, as indicated above, the upper portion 32a of the second support web 32 may not extend beyond the complementary profiles 34. In other words, the complementary profiles 34 may extend to the limit of second support sail 32.

Le sachet 1 ainsi obtenu est donc capable de résister aux sollicitations internes (dues à l'encombrement du contenu du sachet 1) et externes (dues à la l'action d'une personne - adulte ou enfant - sur l'embouchure 2) des parois 10, 20 du sachet 1, empêchant toute ouverture conventionnelle du sachet 1 (par traction sur les bords supérieurs 10c, 20c des parois 10, 20), même par un adulte. En effet, lorsque les profilés complémentaires 14, 24 sont en prise, la sollicitation en écartement des parois 10, 20 du sachet 1 (i.e. perpendiculairement aux parois 10, 20 du sachet 1 selon les flèches F des figures 4b et 4c) entraine la tension de la deuxième paroi 20 et de la paroi supplémentaire 30 et la rotation du dispositif de fermeture autour du deuxième voile support 22 jusqu'à aligner globalement les voiles support 12, 22, la deuxième paroi 20 et la paroi supplémentaire 30 avec la direction d'application des efforts F. Cet alignement, visible en figure 2b, empêche toute ouverture du sachet 1, même par un adulte.The bag 1 thus obtained is therefore able to withstand the internal stresses (due to the bulk of the contents of the bag 1) and external (due to the action of a person - adult or child - on the mouth 2) walls 10, 20 of the bag 1, preventing any conventional opening of the bag 1 (by traction on the upper edges 10c, 20c of the walls 10, 20), even by an adult. Indeed, when the complementary profiles 14, 24 are engaged, the biasing of the walls 10, 20 of the bag 1 ( ie perpendicular to the walls 10, 20 of the bag 1 according to the arrows F Figures 4b and 4c ) causes the tension of the second wall 20 and of the additional wall 30 and the rotation of the closure device around the second support web 22 to globally align the support webs 12, 22, the second wall 20 and the additional wall 30 with the direction of application of the forces F. This alignment, visible in figure 2b , prevents any opening of the bag 1, even by an adult.

Pour ouvrir un sachet 1 conforme au quatrième ou cinquième mode de réalisation, il est possible d'utiliser le passage 40, comme décrit ci-dessus.To open a bag 1 according to the fourth or fifth embodiment, it is possible to use the passage 40, as described above.

En variante, le sachet 1 peut être dépourvu d'un tel passage. Il est alors possible de pincer les voiles support 30, 32 afin de déplacer les profilés complémentaires 34 dans des sens opposés (cisaillement). Les extrémités libres des voiles support 30, 32 étant fixées aux côtés latéraux de la première paroi 10, ce pincement a pour effet de séparer les profilés complémentaires 34 à proximité de l'un de ces bords.Alternatively, the bag 1 may be devoid of such a passage. It is then possible to pinch the sails support 30, 32 to move the complementary profiles 34 in opposite directions (shear). The free ends of the support webs 30, 32 being attached to the lateral sides of the first wall 10, this nipping has the effect of separating the complementary profiles 34 near one of these edges.

La difficulté d'ouverture par pincement des voiles support 30, 32 peut être ajustée en soudant les côtés latéraux de la première et de la deuxième paroi 10, 20 sur toute leur hauteur.The difficulty of opening by squeezing the support webs 30, 32 can be adjusted by welding the lateral sides of the first and second walls 10, 20 over their entire height.

Cette difficulté peut également être ajustée en modifiant la position du dispositif de fermeture par rapport au pli 19 et/ou à l'embouchure du sachet 1. En effet, la Demanderesse s'est aperçue que plus la partie inférieure 32b du deuxième voile support 32 était éloignée du pli 19, plus il était difficile de séparer les profilés complémentaires par pincement, la paroi supplémentaire 16 ayant tendance à dissiper les efforts appliqués sur le sachet 1. Une distance entre la limite des profilés complémentaires 34 (au niveau de la partie inférieure 32b) et le pli 19 peut par exemple être de l'ordre de 5 à 30 mm, typiquement 25 mm.This difficulty can also be adjusted by changing the position of the closure device with respect to the fold 19 and / or the mouth of the bag 1. In fact, the Applicant has found that the lower part 32b of the second support veil 32 was away from the fold 19, the more it was difficult to separate the complementary profiles by pinching, the additional wall 16 tending to dissipate the forces applied to the bag 1. A distance between the limit of the complementary profiles 34 (at the bottom part 32b) and the fold 19 may for example be of the order of 5 to 30 mm, typically 25 mm.

Par ailleurs, plus le dispositif de fermeture est proche de l'embouchure, plus les usagers (adultes ou enfants) ont tendance à saisir le dispositif par les profilés complémentaires 34 et non par leurs parties inférieures 30b 32b, rendant ainsi plus difficile le déplacement relatif des voiles support 30, 32 et donc la séparation de leurs profilés 34. On notera que ce pincement des voiles support 30, 32 n'est pas évident pour des enfants, qui ont naturellement tendance à attraper le sachet 1 par ses parois 10, 20. Or, l'ouverture du sachet 1 en sollicitant les bords supérieurs des parois 10, 20 n'est pas possible (sans détruire le dispositif de fermeture du sachet 1) en raison de la rotation des voiles support 30, 32.Furthermore, the closer the closure device to the mouth, the more users (adults or children) tend to grasp the device by the complementary profiles 34 and not by their lower parts 30b 32b, thus making it more difficult to move relative sails 30, 32 and thus the separation of their profiles 34. It will be noted that this nipping of the support sails 30, 32 is not obvious for children, who naturally tend to grab the bag 1 by its walls 10, 20 However, the opening of the bag 1 by urging the upper edges of the walls 10, 20 is not possible (without destroying the closure device of the bag 1) due to the rotation of the support webs 30, 32.

Par ailleurs, seul un pincement important des voiles support 30, 32 serait susceptible d'ouvrir le sachet 1. Or, un tel effort est trop intense pour un enfant, qui ne pourra donc accéder au contenu du sachet 1.Moreover, only a significant nipping of the support webs 30, 32 would be likely to open the bag 1. However, such an effort is too intense for a child, who can therefore access the contents of the bag 1.

Quel que soit le mode de réalisation, 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.Whatever the embodiment, the walls 10, 20 of the bag 1 may 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 supporting webs 30, 32 and the complementary closure elements 34 may be made of a single material, in particular one of the following materials: polypropylene PP, polyethylene 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.Alternatively, these different elements of the bag 1 may be made of different materials. In particular, a bag 1 comprising a first wall 10 and a second wall 20 made of polyethylene terephthalate and / or polyethylene and a closure assembly 3 (supporting webs 30, 32) may be mentioned in a non-limiting manner. and complementary closure members 34) of 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.Moreover, the first and second walls 10, 20 may have a thickness of between 30 micrometers and 200 micrometers, typically of the order of 60 micrometers to 150 micrometers, especially when said walls are formed in one of the materials described herein. -above. It will of course be understood that these walls can be made of complex materials comprising several layers of different materials.

Claims (15)

  1. A bag (1) comprising:
    - a first and a second walls (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 webs (30, 32) respectively connected to the first and second walls (10, 20) and each including a complementary closure element (34), the second support web (32) being hinged on the second wall (20) so that the traction on the walls (10, 20) of the bag (1) when the complementary closure elements (34) are engaged causes the rotation of the support webs (30, 32) around said complementary closure elements (34),
    the bag (1) being characterized in that the first support web (30) is connected discontinuously along its length to the first wall (10) of the bag (1) 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 outside the bag (1), said passage (40) which can allow a local deformation of the first support web (30) suitable for modifying the local relative orientation of the closure elements (34) during a spacing of the walls (10, 20) of the bag (1) and which can facilitate the separation of the complementary closure elements (34) .
  2. The bag (1) according to claim 1, wherein 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 and the upper edge being discontinuously connected to the first wall (10) of the bag (1), so as to provide the passage (40).
  3. The bag (1) according to claim 2, wherein:
    - the upper edge of the first support web (30) is continuously fixed to 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 edge of the first support web (30) is continuously fixed to the first wall (10) along the second section (B) over all or part of its height.
  4. The bag (1) according to any of claims 2 or 3, wherein the lower edge of the first support web (30) is connected to the first wall (10) continuously between the lateral sides of the bag (1).
  5. The bag (1) according to any of claims 2 to 4, wherein the first support web (30) is 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), and wherein the upper portion (30a) of the first support web (30) is discontinuously connected to the first wall (10) so as to form the passage (40).
  6. The bag (1) according to any of claims 1 to 5, wherein the first support web (30) is 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), and wherein the upper portion (30a) of the first support web (30) is locally cut so as to form the passage (40).
  7. The bag (1) according to claim 1, wherein the second support web (32) is fixed to the second wall (20) in a localized area (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 hinged on the second wall (20) .
  8. The bag (1) according to claim 7, wherein the second support web (32) is divided into a lower portion (32b) and an upper portion, the lower portion being closer to the bottom (2) than the upper portion (32a) and carrying the closure element (34), and wherein the localized area (33) at which is fixed the second support web (32) on the second wall (20) is part of the lower portion (32b) of said second support web (32).
  9. The bag (1) according to claim 8, wherein the upper portion (32a) of the second support web (32) has a height less than a height of the closure element (34) .
  10. The bag (1) according to claim 1, wherein the first and second support webs (32) are connected to the first and second walls (10, 20) via a first and a second extension webs (12, 14), respectively, one at least of the support webs (30, 32) being fixed to the extension web (12, 14) away from its upper edge.
  11. The bag (1) according to claim 10, wherein the at least one support web (30, 32) is 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).
  12. The bag (1) according to claim 1, further comprising an additional wall (16) having a first flap (17) and a second flap (18), the first flap (17) being connected to the second wall (20) in the vicinity of the mouth of the bag (1) while the second flap (18) is connected to the first wall (10), said additional wall (16) being folded between the first flap (17) and the second flap (18) along a fold (1) so that the first flap (17) extends in direction of the bottom (2), and wherein:
    - the first support web (30) and the second support web (32) are fixed to the first wall (10), and
    - the second support web (32) is further fixed to the second flap (18) of the additional wall (16).
  13. The bag (1) according to claim 12, wherein the second flap (18) of the additional wall (16) is fixed in the vicinity of the lateral sides of the first wall (10), between the second support web (32) and the fold (19) .
  14. The bag (1) according to any of claims 1 to 13, 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.
  15. The bag (1) according to claim 14, wherein all or part of the complementary profiles (34) comprises sequential alterations substantially parallel to the lateral sides, typically sequential crushings.
EP16719036.2A 2015-04-10 2016-04-08 Pouch having a concealed opening Active EP3280651B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL16719036T PL3280651T3 (en) 2015-04-10 2016-04-08 Pouch having a concealed opening

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR1553143A FR3034760B1 (en) 2015-04-10 2015-04-10 BAG WITH SECURE OPENING FOR CHILDREN
FR1560314A FR3043070B1 (en) 2015-10-28 2015-10-28 BAG HAVING A MASKED OPENING
PCT/EP2016/057842 WO2016162534A1 (en) 2015-04-10 2016-04-08 Sachet having a concealed opening

Publications (2)

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EP3280651A1 EP3280651A1 (en) 2018-02-14
EP3280651B1 true EP3280651B1 (en) 2019-07-10

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EP16719036.2A Active EP3280651B1 (en) 2015-04-10 2016-04-08 Pouch having a concealed opening

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US (1) US10472131B2 (en)
EP (1) EP3280651B1 (en)
JP (1) JP6921756B2 (en)
CA (1) CA2981932A1 (en)
ES (1) ES2747933T3 (en)
MX (1) MX377543B (en)
PL (1) PL3280651T3 (en)
WO (1) WO2016162534A1 (en)

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MX2017012981A (en) 2018-05-22
CA2981932A1 (en) 2016-10-13
WO2016162534A1 (en) 2016-10-13
US10472131B2 (en) 2019-11-12
EP3280651A1 (en) 2018-02-14
JP6921756B2 (en) 2021-08-18
PL3280651T3 (en) 2020-03-31
MX377543B (en) 2025-03-10
US20180118414A1 (en) 2018-05-03
ES2747933T3 (en) 2020-03-12
JP2018512342A (en) 2018-05-17

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