Closure system for flexible pouch designed to remain completely attached to the flexible pouch.

Abstract

- Closure system for a flexible bag intended to remain attached to the flexible bag. - The closure system 1 comprises, on the one hand, a pouring device (4) comprising a fixing part (5) for fixing the closure system (1) to the flexible bag (2) and a cylindrical pipe (6) for forming a passage for the fluid material and, on the other hand, a stopper device (7) comprising a stopper (8) for closing the cylindrical pipe (6), a cylindrical tube (9) surrounding the cylindrical pipe (6) capable of sliding longitudinally around the cylindrical pipe (6) and a hinge (10) connecting the stopper (8) and the cylindrical tube (9). Figure for the abstract: Fig.1

Description

Title of the invention: Closure system for flexible pouch intended to remain completely attached to the flexible pouch. Technical field

[0001] The present invention relates to a closure system for a flexible bag intended to remain attached to the flexible bag. State of the art

[0002] For ecological reasons, in most countries, new regulations require or will require that a closure system for a container, such as a bottle, remains completely attached to the container, even when the closure system leaves the neck of the container open.

[0003] These regulations will also apply to flexible pouches. Flexible pouches are generally used to contain food or non-food fluid materials. By way of non-limiting examples, a fluid material may correspond to a liquid material (drink, windshield washer fluid, etc.), a pasty material (toothpaste, etc.) or a granular material (sand, sugar, etc.)

[0004] There are already capping devices that remain attached to the flexible bag. In these capping devices, the cap is generally attached to the flexible bag by a tether. The cap therefore does not have a fixed position relative to the flexible bag, which can hinder the user who is trying to pour the fluid material or to suck up the fluid material. The existing capping devices are therefore not completely satisfactory. Statement of the invention

[0005] The object of the present invention is to propose a closure system for a flexible bag intended to remain completely attached to the flexible bag.

[0006] For this, it relates to a closure system intended to be fixed to an opening of a flexible bag capable of containing a fluid material and to remain completely attached to the flexible bag.

[0007] According to the invention, the closure system comprises: - a pouring device comprising: • a fixing part intended to fix the closure system to the opening of the flexible bag and • a first cylindrical conduit intended to form a passage of the fluid material between the interior of the flexible bag and the exterior of the flexible bag, the first cylindrical conduit having a first end, a second end and a first axis of evolution, the first cylindrical pipe being integral with the fixing part at its first end; - a stopper device comprising: • a plug configured to be alternately in a closed position in which the plug plugs the second end of the first cylindrical pipe and in an open position in which the plug does not plug the second end of the first cylindrical pipe, • a cylindrical tube surrounding the first cylindrical pipe, the cylindrical tube having a first end, a second end and a second axis of revolution coinciding with the first axis of revolution of the first cylindrical pipe, the cylindrical tube being able to slide around the first cylindrical pipe along the second axis of revolution between a first locking position and a second locking position when the cap is in the open position, • a hinge connecting the cap and the first end of the cylindrical tube.

[0008] Thus, thanks to the cylindrical tube mounted on the first cylindrical pipe between two locking positions, the plug linked to the cylindrical tube remains attached to the flexible bag.

[0009] In addition, the pouring device comprises a second cylindrical pipe having a first end, a second end and a third axis of revolution coinciding with the first axis of revolution of the first cylindrical pipe, the second cylindrical pipe having an internal surface, the first end of the second cylindrical pipe being free, the second end comprising the fixing part, the pouring device comprising a ring integrally connecting the second end of the second cylindrical pipe and the first end of the first cylindrical pipe, the ring forming a bottom of a cylindrical space between the first cylindrical pipe and the second cylindrical pipe, the cylindrical tube of the stopper device being able to slide at least partly in the cylindrical space,the first locking position corresponding to a position of the cylindrical tube when the second end of the cylindrical tube reaches the bottom of the cylindrical space.

[0010] Further, the cylindrical tube has an outer surface and comprises a first section and a second section, the first section comprising the first end of the cylindrical tube, the second section comprising the second end of the cylindrical tube, the cylindrical tube comprising a first external rib projecting from the external surface of the cylindrical tube on the second section, the first end of the second cylindrical pipe having an internal rib projecting from the internal surface of the second cylindrical pipe, the first external rib being located in the cylindrical space between the bottom and the internal rib, the first external rib and the internal rib being configured so that the first external rib prevents passage of the first external rib over the internal rib after a first insertion of the cylindrical tube at least partially into the cylindrical space, the second locking position corresponding to a position of the cylindrical tube when the first external rib is in abutment against the internal rib to at least partially retain the cylindrical tube in the cylindrical space.

[0011] Advantageously, the first external rib and the internal rib are further configured so that the first external rib is able to pass over the internal rib during the first insertion of the cylindrical tube at least partially into the cylindrical space.

[0012] According to a particular feature, the internal rib has a first circular surface orthogonal to the internal surface of the second cylindrical pipe, the first circular surface facing the second end of the second cylindrical pipe; the first external rib having a second circular surface orthogonal to the external surface of the cylindrical tube on the second section, the second circular surface facing the first end of the cylindrical tube; the second circular surface being capable of being pressed against the first circular surface when the first external rib is in abutment against the internal rib, preventing the passage of the first external rib over the internal rib.

[0013] According to another feature, the internal rib has a first circular ramp progressing from the first end of the second cylindrical pipe towards the second end of the second circular pipe; the first external rib having a second circular ramp progressing from the external surface of the cylindrical tube on the second section towards the first end of the cylindrical tube; the second circular ramp being capable of sliding against the first circular ramp upon first insertion of the cylindrical tube at least partially into the cylindrical space by allowing the first external rib to pass over the internal rib.

[0014] Furthermore, the cylindrical tube comprises a second external rib projecting from the external surface of the cylindrical tube on the first section, the second external rib being configured to temporarily block a sliding of the cylindrical tube when the second external rib bears against the internal rib towards the second end of the first cylindrical conduit when the cylindrical tube is in the first blocking position.

[0015] In addition, the second external rib has a rounded surface.

[0016] Furthermore, the cylindrical tube comprises a third external rib projecting from the external surface of the cylindrical tube on the second section, the third external rib being configured to temporarily block a sliding of the cylindrical tube towards the first end of the first cylindrical conduit when the third external rib bears against the internal rib and when the internal rib is located between the first external rib (15) and the third external rib.

[0017] According to one embodiment, the second cylindrical pipe comprises at least one relief projecting from its internal surface, the relief(s) extending parallel to the third axis of revolution, the relief(s) being in mechanical connection with friction with the cylindrical tube so that the cylindrical tube is able to slide around the first cylindrical pipe along the second axis of revolution if a user exerts a force parallel to the second axis of revolution on the cylindrical tube which is greater than a predetermined force.

[0018] According to another embodiment, the first cylindrical pipe has an external surface, the first cylindrical pipe comprising at least one relief projecting from its external surface, the relief(s) extending parallel to the first axis of revolution, the relief(s) being in mechanical connection with friction with the cylindrical tube so that the cylindrical tube is able to slide around the first cylindrical pipe along the second axis of revolution if a user exerts a force parallel to the second axis of revolution on the cylindrical tube which is greater than a predetermined force.

[0019] Advantageously, the first cylindrical conduit has an internal surface comprising an obstacle projecting from said internal surface inside the first cylindrical conduit. Brief description of the figures

[0020] The attached figures will make it clear how the invention can be implemented. In these figures, identical references designate similar elements.

[0021] [Fig.l] comprises two figures. Figure 1A shows a perspective view of the capping system when the cap is in the closed position. Figure 1B shows a perspective view of the capping system when the cap is in the closed position. is in the open position.

[0022] [Fig. 2] comprises two figures. Figure 2A represents a longitudinal section AA of the capping system when the cap is in the closed position. Figure 2B shows a front view of the capping system when the cap is in the closed position.

[0023] [Fig. 3] shows two figures. Figure 3A shows a longitudinal section BB of the capping system when the cap is in the open position. Figure 3B shows a front view of the capping system when the cap is in the open position.

[0024] [Fig. 4] represents four figures. Figure 4A represents a cross-section of the inner rib and the first outer rib in which the ramp of the first outer rib slides against the ramp of the inner rib upon a first insertion of the cylindrical tube into the cylindrical space. Figure 4B shows a cross-section of the inner rib and the first outer rib in which the second circular surface is pressed against the first circular surface when the first outer rib abuts the inner rib. Figure 4C shows a cross-section of the inner rib and the second outer rib in which the second outer rib slides against the ramp of the first outer rib when the cylindrical tube is brought toward the first end of the first cylindrical conduit.Figure 4D shows a cross-section of the inner rib and the second outer rib in which the second outer rib slides over the first outer rib as the cylindrical tube is brought toward the second end of the first cylindrical conduit.

[0025] [Fig.5] shows a perspective view of the pouring device.

[0026] [Fig. 6] comprises two figures. Figure 6A represents a first view in perspective of the stopper device. Figure 6B shows a second perspective view of the stopper device.

[0027] [Fig.7] shows a perspective view of a flexible bag to which is attached a closure system according to a first embodiment.

[0028] [Fig.8] represents a perspective view of a flexible bag to which a closure system is fixed according to a second embodiment. Detailed description

[0029] The closure system 1 is shown in [Fig.l] to [Fig.3], in [Fig.7] and in [Fig.8],

[0030] The closure system 1 is intended to be fixed to an opening 3 of a flexible bag 2 capable of containing a fluid material ([Fig.7] and [Fig.8]).

[0031] The capping system 1 comprises a pouring device 4 and a device cap 7.

[0032] The pouring device 4 ([Fig.5]) comprises a fixing part 5 and a first cylindrical pipe 6.

[0033] The fixing part 5 is intended to fix the closure system 1 to the opening 3 of the flexible bag 2.

[0034] The first cylindrical pipe 6 is intended to form a passage for the fluid material between the inside of the flexible bag 2 and the outside of the flexible bag 2. The first cylindrical pipe 6 has a first end 61, a second end 62 and a first axis of revolution AL. The first cylindrical pipe 6 has an internal surface S6. The first cylindrical pipe 6 is integral with the fixing part 5 at the first end 61 of the first cylindrical pipe 6.

[0035] An "internal surface" for a hollow cylinder (such as a pipe or a tube) is defined by a surface of said hollow cylinder directed towards its axis of revolution. Conversely, an "external surface" for a hollow cylinder is defined by a surface of said hollow cylinder directed opposite its axis of revolution.

[0036] When the fluid material leaves the flexible bag, said fluid material enters the first cylindrical conduit 6 through the first end 61 to exit through the second end 62.

[0037] Advantageously, the fixing part 5 and the first cylindrical pipe 6 are in one piece.

[0038] The fixing part 5 may correspond to a so-called boat-shaped fixing. This boat-shaped fixing comprises a plurality of planes 23 perpendicular to the first axis of revolution AL. Each perpendicular plane has a substantially rhomboidal shape surrounding at least the first cylindrical pipe 6. The center of the rhomboidal shape of each parallel plane coincides with the first axis of revolution AL. Each parallel plane has an edge intended to be fixed, for example by welding, to the opening of the flexible bag 2.

[0039] The stopper device 7 ([Fig.6]) comprises a stopper 8 and a cylindrical tube 9.

[0040] The cap 8 is configured to be alternately in a closed position in which the plug 8 blocks the second end 62 of the first cylindrical conduit 6 and in an open position in which the plug 8 does not block the second end 62 of the first cylindrical conduit 6. When the plug is in the open position, the fluid material contained in the flexible bag 2 can exit through the first cylindrical conduit 6.

[0041] The cylindrical tube 9 surrounds the first cylindrical conduit 6. Said cylindrical tube 9 has a first end 91, a second end 92 and a second axis of revolution A2 coincident with the first axis of revolution A1 of the first cylindrical conduit 6. The cylindrical tube 9 is able to slide around the first cylindrical pipe 6 along (or according to) the second axis of revolution A2 between a first locking position and a second locking position when the plug 8 is in the open position.

[0042] The locking positions of the cylindrical tube 9 correspond to extreme positions or limits limiting the sliding of the cylindrical tube 9 around the first cylindrical conduit 6 along the second axis of revolution A2.

[0043] The stopper 8 and the cylindrical tube 9 provide hygienic use of the stoppering system 1.

[0044] Indeed, in the closed position of the cap 8, the cylindrical tube 9 and the cap 8 isolate the first cylindrical conduit 6 from external elements. The cylindrical tube 9 and the cap 8 make it possible to keep the first cylindrical conduit 6 clean. For example, when the flexible bag 2 contains a drink, the user may be required to place his mouth around the first cylindrical conduit 6. The cap 8 and the cylindrical tube 6 therefore make it possible to protect the part of the first cylindrical conduit 6 intended to receive the user's mouth. Conversely, the cylindrical tube 9 and the cap 8 also make it possible to protect the elements from the fluid material which could have been deposited on the external surface of the first cylindrical conduit 6.

[0045] In a first embodiment of the stopper 8, the stopper 8 corresponds to a friction stopper. In this first embodiment, the first locking position may correspond substantially to the position of the cylindrical tube 9 when the stopper is in the closed position. In addition, the stopper 8 may comprise at least one breakable bridge 24 (FIG. 6A). The breakable bridge(s) 24 connect the stopper to the first end 91 of the cylindrical tube 9 when the stopper 8 is in the closed position before a first opening of the stopper 8 to the open position. The breakable bridge(s) 24 break at the time of the first opening of the stopper 8.

[0046] In a second embodiment of the cap 8, the cap 8 corresponds to a screw cap. In this second embodiment, the second end 62 of the first cylindrical pipe 6 comprises a thread configured to cooperate with a thread arranged in the cap 8. The first locking position may be located a predetermined distance further from the position of the cylindrical tube when the cap is in the closed position in the direction from the first end 61 to the second end 62 of the first cylindrical pipe. The predetermined distance corresponds substantially to the distance necessary for the movement of the cap 8, in the direction from the first end 61 to the second end 62 of the first cylindrical pipe, when unscrewing the cap 8 from the first cylindrical pipe 6.In this second embodiment, the plug 8 may comprise at least one breakable bridge having the same function as the . bridges described in the first embodiment of the cap 8.

[0047] The stopper device 7 further comprises a hinge 10 connecting the stopper 8 and the first end 91 of the cylindrical tube 9. This hinge 10 is not fracturable. It allows the stopper 8 to move from its closed position to its open position and vice versa. Furthermore, the hinge 10 can be configured to temporarily block the stopper 8 in its open position.

[0048] Advantageously, the stopper 8, the cylindrical tube 9 and the hinge 10 are in one piece. The bridge(s) 24 may also be in one piece with the stopper 8, the cylindrical tube 9 and the hinge 10.

[0049] Advantageously, the pouring device 4 can also comprise a second cylindrical pipe 11 comprising a first end 111, a second end 112, an internal surface SI 1 and a third axis of revolution A3 coinciding with the first axis of revolution A1 of the first cylindrical pipe 6.

[0050] The first end 111 of the second cylindrical pipe 11 is free. The second end 112 comprises the fixing part 4. In the case where the fixing part 5 corresponds to a boat-shaped fixing. Each perpendicular plane 23 is fixed the second cylindrical pipe 11.

[0051] The pouring device 4 may comprise a ring 12 securely connecting the second end 112 of the second cylindrical pipe 11 and the first end 61 of the first cylindrical pipe 6. The ring 12 forms a bottom 13 of a cylindrical space 14 between the first cylindrical pipe 6 and the second cylindrical pipe 11. The cylindrical tube 9 of the stopper device 7 is then able to slide at least partly in the cylindrical space 14.

[0052] The first locking position may correspond to a position of the cylindrical tube 9 when the second end 92 of the cylindrical tube 9 reaches the bottom 13 of the cylindrical space 14.

[0053] The cylindrical tube 9 has an external surface S9 and comprises a first section T1 and a second section T2.

[0054] The limit 25 between the two sections T1 and T2 can be located halfway between the first end 91 and the second end 92 of the cylindrical tube 9 ([Fig.6]).

[0055] The first section T1 comprises the first end 91 of the cylindrical tube 9. The second section T2 comprises the second end 92 of the cylindrical tube 9.

[0056] The cylindrical tube 9 may comprise a first external rib 15 projecting from the external surface S9 of the cylindrical tube 9 on the second section T2.

[0057] The first end 111 of the second cylindrical conduit 11 may comprise an internal rib 16 projecting from the internal surface SI 1 of the second cylindrical conduit 11. The first external rib 15 is located in the cylindrical space 14 between the bottom 13 and the internal rib 16.

[0058] The first external rib 15 and the internal rib 16 are configured so that the first external rib 15 prevents passage of the first external rib 15 over the internal rib 16 after a first insertion of the cylindrical tube 9 at least partially into the cylindrical space 14.

[0059] The first insertion may correspond to a step of mounting the stopper device 7 to the pouring device 4 in which the cylindrical tube 9 is mounted around the first cylindrical conduit 6.

[0060] The second locking position may correspond to a position of the cylindrical tube 9 when the first external rib 15 is in abutment against the internal rib 16 to at least partially retain the cylindrical tube 9 in the cylindrical space 14.

[0061] In addition, the first external rib 15 and the internal rib 16 may also be configured so that the first external rib 15 is able to pass over the internal rib 16 during the first insertion of the cylindrical tube 9 at least partly into the cylindrical space 14. Thus, during the step of mounting the stopper device 7 to the pouring device 4, the insertion of the cylindrical tube 9 is facilitated during the first insertion.

[0062] According to an embodiment of the internal rib 16 and the first external rib 15, the internal rib 16 may have a first circular surface 17 orthogonal to the internal surface SI 1 of the second cylindrical pipe 11. The first circular surface 17 faces the second end 112 of the second cylindrical pipe 11. In addition, the first external rib 15 may have a second circular surface 18 orthogonal to the external surface S9 of the cylindrical tube 9 on the second section T2. ​​The second circular surface 18 faces the first end 91 of the cylindrical tube 9.

[0063] Thus, as shown in FIG. 4b, the second circular surface 18 is capable of being pressed against the first circular surface 17 when the first external rib 15 is in abutment against the internal rib 16, preventing the passage of the first external rib 15 over the internal rib 16 when the cylindrical tube 9 slides in the direction indicated by the arrow F2.

[0064] According to one embodiment, the internal rib 16 may further have a first circular ramp 19 progressing from the first end 111 of the second cylindrical pipe 11 towards the second end 112 of the second circular pipe 11. The first external rib 15 may have a second circular ramp 20 progressing from the external surface S9 of the cylindrical tube 9 on the second section T2 towards the first end 91 of the cylindrical tube 9.

[0065] Thus, as shown in Figure 4a, the second circular ramp 20 is likely to slide against the first circular ramp 19 during the first insertion. of the cylindrical tube 9 at least partly in the cylindrical space 14 by allowing the first external rib 15 to pass over the internal rib 16 when the cylindrical tube 9 slides in the direction indicated by the arrow F1. According to a variant, the cylindrical tube 9 and / or the second cylindrical conduit 11 may have sufficient elasticity to allow the passage of the first external rib 15 over the internal rib 16. According to a variant, the internal rib 16 and / or the first external rib 15 may have sufficient elasticity to allow the passage of the first external rib 15 over the internal rib 16.

[0066] Advantageously, the cylindrical tube 9 may comprise a second external rib 21 projecting from the external surface S9 of the cylindrical tube 9 on the first section T1. The second external rib 21 is configured to temporarily block a sliding of the cylindrical tube 9 when the second external rib 21 bears against the internal rib 16 towards the second end 62 of the first cylindrical pipe 6 when the cylindrical tube 9 is in the first blocking position.

[0067] The term "temporarily blocking a sliding of the cylindrical tube 9" means blocking the sliding of the cylindrical tube 9 if the force enabling this sliding to occur does not reach a predetermined force above which sliding is possible.

[0068] According to a preferred embodiment, the second external rib 21 has a rounded surface. Figures 4C and 4D show a cross-section of a second external rib 21. The rounded surface of the second external rib 21 makes it possible to temporarily block the sliding of the cylindrical tube 9 when the second external rib 21 bears against the internal rib 16 towards the second end 62 of the first cylindrical pipe 6 when the cylindrical tube 9 is in the first blocking position.

[0069] Figure 4C shows a sliding of the cylindrical tube 9 in the direction indicated by the arrow F3 to bring the cylindrical tube 9 into the first locking position and to temporarily lock the cylindrical tube 9 in the first locking position. Figure 4D shows a sliding of the cylindrical tube 9 in the direction indicated by the arrow F4 to remove the cylindrical tube 9 from the first locking position.

[0070] Thus, when the cylindrical tube 9 is in the first locking position, the plug device 7 remains spaced from the second end 62 of the first cylindrical conduit 6. Consequently, the flow of fluid material exiting through the second end 62 of the first cylindrical conduit 6 is not hindered by any obstacle that the plug 8 of the plug device 7 could constitute. Similarly, a user who wishes to bring the second end 62 of the first cylindrical conduit 6 to his mouth is not hindered by the device 7 which could slide along the first cylindrical pipe 6 if the cylindrical tube 9 was not retained by the second external rib 21.

[0071] In addition, a user wishing to close the flexible bag 2 can bring the cylindrical tube 9 towards the second end 62 of the first cylindrical conduit 6 by driving the cylindrical tube 9 towards the second end 62 of the first cylindrical conduit 6 with a force greater than the predetermined force allowing the passage of the second external rib 21 over the internal rib 16. The user can drive the cylindrical tube 9 by pulling on the cap 8 which is connected to the cylindrical tube 9 by the hinge 10.

[0072] Advantageously, the cylindrical tube 9 may comprise a third external rib 22 projecting from the external surface S9 of the cylindrical tube 9 on the second section T2. ​​The third external rib 22 is configured to temporarily block a sliding of the cylindrical tube 9 towards the first end 61 of the first cylindrical conduit 6 when the third external rib 22 bears against the internal rib 16 and when the internal rib 16 is located between the first external rib 15 and the third external rib 22. The temporary blocking of the sliding of the cylindrical tube 9 by the third rib 22 makes it easier to open the cap 8 by bringing the cap 8 from the closed position to the open position.In fact, this temporary blocking makes it possible to maintain the plug device 7 in the first blocking position until the plug 8 is at least 180° from the second end 62 of the first cylindrical pipe 6 around the hinge 10.

[0073] Optionally, the internal surface S6 may comprise an obstacle (not shown) projecting from said internal surface S6 inside the first cylindrical conduit 6. This obstacle makes it possible to limit the flow rate of fluid material leaving the flexible bag 2 via the first cylindrical conduit 6. The obstacle may take several forms.

[0074] For example, the obstacle may take the shape of a triangle having a vertex directed towards the first axis of revolution AL. The triangular shape may be included in a plane perpendicular to the first axis of revolution AL.

[0075] The second cylindrical conduit 11 may also comprise two slides 27 projecting from the external surface of the second cylindrical conduit 11 ([Fig.1] to [Fig.3], [Fig.5] and [Fig.6]). The slides 27 are not shown in [Fig.7] and [Fig.8]. The slides 27 are arranged at 180° to each other and each have a groove facing in two opposite directions. The grooves of the slides 27 are intended to be received by parallel rails to hold and move the closure system 1 when fixing the closure system 1 to the flexible bag 2.

[0076] Advantageously, according to one embodiment, the second cylindrical conduit 11 comprises at least one relief 26 projecting from its internal surface SU ([Fig.l], [Fig.5]). The relief(s) 26 may each have an elongated shape, such as a rib, which extends parallel to the third axis of revolution A3. For example, the second cylindrical pipe 11 may comprise four reliefs 26 arranged at 90° to each other around the third longitudinal axis A3. The relief(s) 26 are in mechanical connection with friction with the cylindrical tube 9 so that the cylindrical tube 9 is able to slide around the first cylindrical pipe 6 along the second axis of revolution A2 if a user exerts a force parallel to the second axis of revolution A2 on the cylindrical tube 9 which is greater than a predetermined force.

[0077] According to another embodiment, the first cylindrical pipe 6 comprises at least one relief (not shown) projecting from its external surface S61. The relief(s) may each have an elongated shape, such as a rib, which extends parallel to the first axis of revolution AL. The relief(s) are in mechanical connection with friction with the cylindrical tube 9 so that the cylindrical tube 9 is able to slide around the first cylindrical pipe 6 along the second axis of revolution A2 if a user exerts a force parallel to the second axis of revolution A2 on the cylindrical tube 9 which is greater than a predetermined force.

[0078] For the two embodiments above, the mechanical connection with friction makes it possible to avoid untimely sliding of the cylindrical tube 9 between the two locking positions.

[0079] In a non-limiting manner, the pouring device 4 and the cap device 7 are each made of plastic material by injection molding technology. For example, the plastic material may correspond to high-density polyethylene (HDPE) or polypropylene (PP). In addition, by way of non-limiting examples, the material of the pouring device 4 and the cap device 7 may be of fossil, bio-sourced or biodegradable origin.

[0080] The method of manufacturing the capping system 1 may comprise a step of molding the pouring device 4, a step of molding the cap device 7 and a step of mounting the cap device 7 on the pouring device 4.

[0081] For the assembly step, the cylindrical tube 9 is slid onto the first cylindrical conduit 6 so that the first axis of revolution A1 coincides with the second axis of revolution A2 until the first external rib 15 passes above the internal rib 16 and the plug 8 closes the second end 62 of the first cylindrical conduit 6. The cylindrical tube 9 is slid in the direction indicated by the arrow F1 in FIG. 4A.

Claims

Claims

1. Closure system intended to be fixed to an opening (3) of a flexible bag (2) capable of containing a fluid material and to remain completely attached to the flexible bag (2), characterized in that it comprises: a pouring device (4) comprising: • a fixing part (5) intended to fix the closure system (1) to the opening (3) of the flexible bag (2) and • a first cylindrical pipe (6) intended to form a passage for the fluid material between the inside of the flexible bag (2) and the outside of the flexible bag (2), the first cylindrical pipe (6) having a first end (61), a second end (62) and a first axis of revolution (A1), the first cylindrical pipe (6) being integral with the fixing part (5) at its first end (61); a stopper device (7) comprising: • a plug (8) configured to be alternately in a closed position in which the plug (8) blocks the second end (62) of the first cylindrical pipe (6) and in an open position in which the plug (8) does not block the second end (62) of the first cylindrical pipe (6), • a cylindrical tube (9) surrounding the first cylindrical pipe (6), the cylindrical tube (9) having a first end (91), a second end (92) and a second axis of revolution (A2) coinciding with the first axis of revolution (A1) of the first cylindrical pipe (6), the cylindrical tube (9) being able to slide around the first cylindrical pipe (6) along the second axis of revolution (A2) between a first locking position and a second locking position when the cap (8) is in the open position, • a hinge (10) connecting the cap (8) and the first end (91) of the cylindrical tube (9).

2. System according to claim 1, characterized in that the pouring device (4) comprises a second cylindrical pipe (11) having a first end (111), a second end (112) and a third axis of revolution (A3) coinciding with the first axis of revolution (A1) of the first cylindrical pipe (6), the second cylindrical pipe (11) having an internal surface (SI 1), the first end (111) of the second cylindrical pipe (11) being free, the second end (112) comprising the fixing part (5), the pouring device (4) comprising a ring (12) securely connecting the second end (112) of the second cylindrical pipe (11) and the first end (61) of the first cylindrical pipe (6), the ring (12) forming a bottom (13) of a cylindrical space (14) between the first cylindrical pipe (6) and the second cylindrical pipe (11),the cylindrical tube (9) of the stopper device (7) being able to slide at least partly in the cylindrical space (14), the first locking position corresponding to a position of the cylindrical tube (9) when the second end (92) of the cylindrical tube (9) reaches the bottom (13) of the cylindrical space (14).,

3. System according to one of claims 1 and 2, characterized in that the cylindrical tube (9) has an external surface (S9) and comprises a first section (T1) and a second section (T2), the first section (T1) comprising the first end (91) of the cylindrical tube (9), the second section (T2) comprising the second end (92) of the cylindrical tube (9), the cylindrical tube (9) comprising a first external rib (15) projecting from the external surface (S9) of the cylindrical tube (9) on the second section (T2), the first end (111) of the second cylindrical pipe (11) comprising an internal rib (16) projecting from the internal surface (SI 1) of the second cylindrical pipe (11), the first external rib (15) being located in the cylindrical space (14) between the bottom (13) and the internal rib (16), the first external rib (15) and the internal rib (16) being configured so that the first external rib (15) prevents passage of the first external rib (15) over the internal rib (16) after a first insertion of the cylindrical tube (9) at least partly into the cylindrical space (14), the second locking position corresponding to a position of the cylindrical tube (9) when the first external rib (15) is in abutment against the internal rib (16) to at least partly retain the cylindrical tube (9) in the cylindrical space (14).

4. System according to claim 3, characterized in that the first external rib (15) and the internal rib (16) are further configured so that the first external rib (15) is able to pass over the internal rib (16) during the first insertion of the cylindrical tube (9) at least partly into the cylindrical space (14).

5. System according to one of claims 3 and 4, characterized in that the internal rib (16) has a first circular surface (17) orthogonal to the internal surface (SI 1) of the second cylindrical pipe (11), the first circular surface (17) facing the second end (112) of the second cylindrical pipe (11); the first external rib (15) having a second circular surface (18) orthogonal to the external surface (S9) of the cylindrical tube (9) on the second section (T2), the second circular surface (18) facing the first end (91) of the cylindrical tube (9); the second circular surface (18) being capable of being pressed against the first circular surface (17) when the first external rib (15) is in abutment against the internal rib (16) by preventing the passage of the first external rib (15) over the internal rib (16).

6. System according to one of claims 3 to 5, characterized in that the internal rib (16) has a first circular ramp (19) progressing from the first end (111) of the second cylindrical pipe (11) towards the second end (112) of the second circular pipe (11); the first external rib (15) having a second circular ramp (20) progressing from the external surface (S9) of the cylindrical tube (9) on the second section (T2) towards the first end (91) of the cylindrical tube (9); the second circular ramp (20) being capable of sliding against the first circular ramp (19) during the first insertion of the cylindrical tube (9) at least partly into the cylindrical space (14) by allowing the first external rib (15) to pass over the internal rib (16).

7. System according to one of claims 3 to 6, characterized in that the cylindrical tube (9) comprises a second external rib (21) projecting from the external surface (S9) of the cylindrical tube (9) on the first section (T1), the second external rib (21) being configured to temporarily block a sliding of the cylindrical tube (9) when the second external rib (21) bears against the internal rib (16) towards the second end (62) of the first cylindrical pipe (6) when the cylindrical tube (9) is in the first blocking position.

8. System according to one of claims 3 to 7, characterized in that the second external rib (21) has a rounded surface.

9. System according to one of claims 3 to 8, characterized in that the cylindrical tube (9) comprises a third external rib (22) projecting from the external surface (S9) of the cylindrical tube (9) on the second section (T2), the third external rib (22) being configured to temporarily block a sliding of the cylindrical tube (9) towards the first end (61) of the first cylindrical pipe (6) when the third external rib (22) bears against the internal rib (16) and when the internal rib (16) is located between the first external rib (15) and the third external rib (22).

10. System according to one of claims 2 to 9, characterized in that the second cylindrical pipe (11) comprises at least one relief (26) projecting from its internal surface (SI 1), the relief(s) (26) extending parallel to the third axis of revolution (A3), the relief(s) (26) being in mechanical connection with friction with the cylindrical tube (9) so that the cylindrical tube (9) is able to slide around the first cylindrical pipe (6) along the second axis of revolution (A2) if a user exerts a force parallel to the second axis of revolution (A2) on the cylindrical tube (9) which is greater than a predetermined force.

11. System according to one of claims 2 to 9, characterized in that the first cylindrical pipe (6) has an external surface (S61), the first cylindrical pipe (6) comprising at least one relief projecting on its external surface (S61), the relief(s) extending parallel to the first axis of revolution (A1), the relief(s) being in mechanical connection with friction with the cylindrical tube (9) so that the cylindrical tube (9) is able to slide around the first cylindrical pipe (6) along the second axis of revolution (A2) if a user exerts a force parallel to the second axis of revolution (A2) on the cylindrical tube (9) which is greater than a predetermined force.

12. System according to one of claims 1 to 11, characterized in that the first cylindrical conduit (6) has an internal surface (S6) comprising an obstacle projecting from said internal surface (S6) inside the first cylindrical conduit (6).

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