MXPA01007910A - Oriented closure device and container - Google Patents

Abstract

The invention concerns a container assembly provided with a top having a cylindrical neck (3) and a cap (10) including a base (11) to be fixed on said container top, the cap base being provided with an outer skirt (13) whereof the wall is adjacent to that (1) of the container. The outline representing the boundary between the cap outer skirt and that of the container is of any kind but is not centred on the neck axis. The container is provided with an inclined shoulder (2). The cap base is provided with a sealing skirt (14) penetrating inside the neck and several axial blades (12a, 12b) whereof the sections are preferably in the form of annular sectors. The neck is provided with a discontinuous annular rib (4), leaving one or several gaps (9a, 9b) matching the shapes of the corresponding axial blade sections. The neck and the axial blades are provided with matching snap-on means (6 and 16).

Description

ORIENTED PLASTER DEVICE AND CONTAINER FIELD OF THE INVENTION The present invention relates to soft tubes intended to contain and distribute substances of liquid to pasty consistency, which are released by pressure of the fingers. It is particularly elliptical tubes whose head is provided with a service capsule provided with an external skirt that extends the elliptical soft skirt of the tube, for example tubes of cream, gel or paste belonging to the fields of cosmetics and der of pharmaceutics . In general, the fixing system developed in the context of the invention is applied to all containers or tubes provided with a head with a cylindrical neck in which a capsule is fixed in a substantially irreversible manner, the external skirt of which does not have a symmetry of revolution with respect to the axis of the neck. In particular, the skirt of the aforesaid capsule can be found in the extension of the soft skirt of the tube or the body of the container, when the capsule is fitted and fixed in the neck. Usually, the tubes have a neck that delimits a distribution orifice and comes REF .: 132064 provided with an external thread to receive a removable plug that is spliced by screwing into the tube. Since these plugs are usually small, users can lose them. In addition, tightening and loosening occupies both hands of the user. To avoid these drawbacks, the plug of the cylindrical tubes has been replaced by a hinge capsule, also called a service capsule, which comprises a part intended to be fixed in a substantially irreversible manner on the neck of the tube (the base) and in which a movable part (the cap) comprising means for sealing the distribution channel is articulated, the assembly being able to be operated with only one hand. If a large number of such sealing systems for cylindrical skirt tubes have been developed, it is not the same for the elliptical skirt tubes due to the technical difficulties described below. Beyond the aforementioned hinge capsules, whose external skirt is drawn for aesthetic reasons in the extension of the elliptical skirt, the problem arises for any oriented tamponade device for which you want to obtain a continuity between the capsule wall and that of a container, once attached to the aforementioned container. Such a device is connected in a substantially irreversible manner, for example by seaming, with the head of a container that is provided with a cylindrical neck. This device is oriented in the sense that it does not have axis symmetry and that it is tried to fix it to the container respecting a precise relative position between both. BACKGROUND OF THE INVENTION A capsule with hinge does not include axial symmetry, which raises the problem of its orientation with respect to the skirt skirt ornament that usually presents a sign (name, logo, drawing, etc.) that identifies the product content. For practical, aesthetic and commercial reasons, it is considered preferable for the consumer to be able to observe the ornament, when rotating the mobile cap of the capsule around the hinge. It is therefore a question of fixing the capsule with a hinge, orienting it precisely with respect to the skirt. In tubes with circular cylindrical skirt, several systems of oriented fixation of the capsule in the tube have been proposed, for example in the application EP-A-0 633 197. In this application, the applicant to set up a closure system insurance. The capsule is fitted to the head of the tube and then closed by rotation upon completion of the capsule socket. The closing means comprise an axial blade, flexible elastically in the radial direction, carried by the capsule and profiled axial portions carried by the shoulder of the tube; the first portion has a first inclined wall against which the blade comes to slide elastically deforming during screwing, and a second portion that serves as a stop to the axial blade once it has found its equilibrium position after its passage against the first portion. Thus, the blade is blocked between the second portion serving as a stop for the rotation and the second wall of the first portion which, since it has a notch in V, serves as a stop to the opposite rotation movement. Such a system is very effective in manufacturing chains in large series of tubes with circular cylindrical skirt because it only requires mechanical means to guide the capsule with respect to the adornment of the skirt. Unfortunately, it can not be used for all elliptical tubes due to the rotation imposed on the capsule after fitting, since the angle of rotation can almost reach 360 °. On the one hand, you can not choose any form of ellipse, particularly the very crushed ellipses, because the axial portions, intended to block the axial blade, are an obstacle to the free rotation of the capsule until the block is blocked. On the other hand, the capsule comprises an outer skirt which, for aesthetic reasons, has to extend the soft elliptical skirt of the tube. The rotation can not be free except when the two contours, not circular, destined to coincide, are separated from each other and remain in clearly different planes. Thus, upon full attachment of the capsule to the tube, a continuity rupture occurs between the tube wall and the capsule wall, at a width at least equal to the wall thickness of the capsule skirt, typically 1 millimeter; that is why it is said that these walls are not adjacent. This goes against the aesthetic effect that one wants to obtain and decreases the safety with respect to dirt. Known solutions in the field of container or bottle closures allow obtaining adjacent walls by adjusting the end of the external skirt of the capsule around a low height edge. GB 1 414 957 presents a capsule whose open elliptical end fits around a low elliptical edge made in the shoulder of the tube. But such placement, misguided because it is done at the last moment - at the end of the capsule fit, when the strapping effort is the highest -, it can only be done manually and does not adapt to the great cadences of industrial packing. From the economic point of view, it does not offer a satisfactory solution when it comes to fix in a sensibly irreversible way capsules such as the service capsules. Furthermore, in such a case, the accuracy of the orientation of the capsule with less than 1800 variation can not be guaranteed, which is not enough with service capsules whose cap has to be opened in a certain precise direction with respect to the decoration of the capsule. skirt. PROBLEM RAISED Based on the problem posed by the realization of an elliptical tube provided with a service capsule whose external skirt is, after irreversible fixation, in the extension of the elliptical skirt of the tube, the applicant has tried to finalize a system of fixation of a capsule oriented in a container whose head is provided with a cylindrical neck, the capsule having, after fixing substantially irreversibly in the head of the container, an outer skirt whose wall is adjacent to that of the container, its common outline not being a circle centered with with respect to the axis of the neck.

DESCRIPTION OF THE INVENTION A first object of the invention is a container, as it is described and claimed in claim 1, intended to come provided with a capsule with particular orientation. A second object of the invention is an oriented capsule, as described and claimed in claim 11, intended to be fixed in the container according to the invention. A third object of the invention is the assembly obtained after substantially irreversible fixing of the capsule according to the invention in the container according to the invention. A fourth object of the invention is the corking process using the container according to the invention and the capsule according to the invention. The container can have any shape but is provided with a head having a cylindrical distribution neck and a capsule comprising a base intended to be fixed in a substantially irreversible manner on the head of the container. The said base of the capsule and the said container head have complementary means of closing in rotation and in translation with respect to each other. The base of the capsule is provided with an overall cylindrical sealing skirt, the end of which is slightly frustroconical to facilitate its introduction into the hole delimited by the cylindrical neck. In the vicinity of this sealing skirt and towards the outside, the base of the capsule is also provided with one or several axial slats. Preferably, to reduce its volume, the (each) axial lamella has the shape of an annular sector whose axis coincides with that of the sealing skirt. The base of the capsule is attached to an outer skirt of any shape but whose open end has a shape such that it is flush with the container wall when the capsule is substantially irreversible in the container head. The common contour, that is, the curve defined by the intersection between the outer skirt wall of the capsule and the wall of the container, will be called "border contour" below because it separates the head of the container provided with its neck - from the body of the container. The open end of the outer skirt of the capsule coincides with this border contour when the capsule is fixed in a substantially irreversible manner on the container head. It does not have the shape of a circle centered with respect to the axis of the sealing skirt.

The neck, cylindrical, is provided on its external wall with a discontinuous annular rib, which leaves one or several intervals that act as a lock in which the key constituted by the axial blade (s) can enter easily. The substantially irreversible connection of the capsule in the container is ensured by an immobilization in rotation which will be described below and an immobilization in axial translation preferably carried out by seaming. For example, the neck is provided with a seaming flange below the discontinuous annular rib and the axial slats are provided with a complementary seaming flange on their inner wall. The seaming means are placed in such a way that the immobilization and the substantially irreversible fixing of the capsule take place when the open end of the outer skirt of the capsule is flush with the wall of the container. The container is provided with an inclined shoulder, in the sense that, at least in the vicinity of its portion closest to the axis of the neck, it is not perpendicular to the walls of the container and the neck. Preferably, its slope is locally greater than 60 ° - that is to say that in the parts where it is closest to the axis of the neck, the shoulder makes an angle less than 30 ° with the latter - so that there is enough early during the fitting of the neck. capsule a local contact between this part of the shoulder and the inner wall of the external skirt of the capsule. Once this contact is established, the latter evolves in the space during the socket of the capsule in such a way that the lacing effort is minimal, thus, the open end of the external skirt of the capsule is naturally guided towards its final position. When the socket is finished, the aforementioned open end is flush with the wall of the container. The open end of the external skirt of the capsule is delimited by a totally any contour, flat or left, but it does not have to be a circle centered with respect to the axis of the sealing skirt if one wants to obtain a precise positioning. The shoulder is a transition surface generated between the circle of the base of the neck and the front curve, defined above, located opposite the level area of the external skirt of the capsule with the wall of the container. To obtain as quickly as possible a contact between the shoulder and the open end of the capsule, as well as an effective glide of the said end towards its final position, the shoulder must have a half-sphere shape that passes through the two curves and that it has a convexity - calculated with respect to the exterior of the container - preferably positive or non-existent, in order to obtain a better rate of restitution of the product. The shoulder has, in the latter case, the shape of a regulated surface generated between the two said curves. In a preferred embodiment of the invention, the border contour serves as a support for an edge of small height and around which the open end of the external skirt of the capsule comes to be joined at the end of the fitting of the aforementioned capsule, which guarantees a precise position of the aforesaid capsule oriented according to the container. The assembly thus described allows a precise positioning of the capsule in the head of the container when it is fixed in a substantially irreversible manner, for example when using a capping machine of very high cadence. a) In a first time, the capsule is carried in front of the container head without precise previous positioning. The sealing skirt is inserted into the neck, which allows a first alignment of the axes of the capsule and the neck. The capsule thus inserted into the neck has its axial blade which comes against the discontinuous annular rib. To facilitate a good alignment of the axes of the neck and of the sealing skirt, the neck protrudes with respect to the discontinuous annular rib of a sufficient height, preferably greater than 3 mm. b) The capsule then undergoes a rotation, which can reach 360 °, until the key constituted by the axial blade can enter the lock constituted by the interval of the discontinuous annular rib. The discontinuous annular rib may not be flat, what matters is the key effect. But due to the high junction cadences, the play between key and lock can not be too tight, hence the placement can not be done without at least + 15 ° of play. c) Once the key has been inserted into the lock, the capsule undergoes a movement of axial translation until its immobilization and fixation is substantially irreversible, for example by seaming. The precise positioning is guaranteed by the inclined shoulder which allows to guide during the fitting the base of the capsule towards the desired final position, by putting the shoulder in contact with the internal part of the outer skirt of the base and guided end displacement open on the aforesaid shoulder to the final position. The final placement is made by coinciding the contour of the open end of the external skirt of the base of the capsule and the border contour of the container, defined geometrically as being the intersection between the surface on which the wall of the capsule rests and the surface on which the wall of the container rests. The above contours are not, the first, a circle centered with respect to the axis of the sealing skirt, the second, a circle centered with respect to the axis of the neck. In a preferred embodiment of the invention, the capsule is of plastic material. To preserve it, it is preferable to reduce the efforts acting at the level of the neck. To this end, the base of the capsule comprises, fixed at one of its ends to the base of said capsule, at least two irregularly distributed axial blades and / or with different sections that play a key function when the capsule fits into the capsule. the head of the tube. Preferably, these slats have the form of annular sectors whose common axis coincides with that of the sealing skirt. The neck is provided with a discontinuous annular rib that has irregularly distributed intervals and / or with unequal extensions, corresponding to the axial blades of the capsule, in the sense that they disperse the function of a lock in which the key constituted by the Axial blades can be easily inserted. The portions of the discontinuous annular rib could possibly not be placed in the same plane, what matters is the key effect as well as the irregularity of placement and / or in a way that leads to the absence of any symmetry that could authorize for example a placement with a possible variation of 180 °. When the same head of the container is of plastic material, it is also preferable to preserve the discontinuous annular rib. For this purpose, each portion of the annular rib of the neck is preferably extended on at least one of its ends by a longitudinal radial rib serving as a stop for rotation and guidance during the axial engagement of the capsule. The speeds of rotation of the capsule are generally important, due to the imposed production rates, it is possible that a residual rotation speed still exists when the key constituted by the axial slats enters the lock constituted by the intervals. The longitudinal radial rib allows to increase the abutment surface and, consequently, the resistance opposing the said residual rotation. The multiplicity of the axial blades, if they are regularly distributed, also makes it possible to improve the maintenance of the capsule in the head of the container. In fact, when equipping the inner wall of the regularly distributed axial slats with axial ribs, it is possible to strengthen the maintenance of the alignment guaranteed by the sealing skirt giving a sufficient radial height to these ribs in such a way that they come to touch, the wall external of the neck and enclose it with each other and the sealing skirt. On the other hand, the possibilities of axial translation are limited if these ribs are given such a height that they can be found on the bead of the neck, the latter locking the latter with each other and the complementary bead of the axial slats. In order to limit the engagement forces, this latter complementary seaming bead can be replaced by seaming washers located just in the extension of these ribs, preferably in the extension of only a part of these ribs.

The axial blades serve, on the one hand, as a key, on the other hand, of a substantially irreversible connecting means (for example fastened). They contribute to the firm maintenance of the capsule in the neck, thanks to the axial ribs from which they are provided. It is advantageous, if the geometrical configuration allows it, to strengthen the fastening of these axial slats by external fabrics perpendicular to the wall of the slat and reinforcing the latter at the level of the seaming washers. The example given below for a better understanding of the invention, describes a particular geometry that does not have to be considered as limiting. It is a tube with a soft elliptical skirt fitted with a service capsule whose base has an external skirt on the elliptical skirt extension of the tube. The tube has a head comprising a cylindrical neck prolonged by a non-straight shoulder which joins it to the aforementioned soft elliptical skirt. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 represents a section of the elliptical tube head assembly and of the capsule by a plane passing through the large axis of the ellipse envelope of the assembly; The capsule is fixed to the tube head 1 by seaming. Figure 2 shows in perspective the capsule whose open end shows the fixing means and the tube head whose cylindrical neck is provided with complementary fixing means. Figure 3 represents a variant of the previous example, characterized in that the shoulder is not provided with an elliptical edge and because the end of the capsule is a left contour, in "saddle", deduced from the intersection between the wall of the capsule and the one of the espaldón. EXAMPLE 1 (FIGURES 1, 2) The tube of the example is provided with a service capsule 10 composed of a cap 30 and a base 11. The base has an external skirt 13 in the extension of the elliptical skirt 1 of the tube. The tube has a head comprising a cylindrical neck 3 extended by an inclined shoulder 2 which joins it to the elliptical soft skirt 1. The ellipse constituting the envelope form of the soft skirt 1 of the tube and of the external skirt 13 of the base 11 of the service capsule 10 has a large axis of approximately 44 mm and a small axis of approximately 22 mm. The base of the capsule and the head have complementary means of closing in rotation and in translation with respect to one another. Two axial blades 12a and 12b, diametrically opposed but with unequal sections, are fixed at one of their ends 18 with the base 11 of the aforementioned capsule; the set of these blades 12a and 12b plays a key function when the capsule fits over the head of the tube. The neck 3, cylindrical, is provided with a discontinuous annular rib 4 whose fixation is schematized with broken lines in Figure 1 and whose two parts 4a and 4b are shown in Figure 2 and Figure 3, leaving at least two intervals 9a and 9b diametrically opposed and with unequal extensions that act as a lock in which the key, formed with the axial blades 12a and 12b, can be easily inserted. The shape of each interval 9a; 9b is complementary to the shape of the section of the corresponding axial blade 12a; 12b: even if the slats are diametrically opposed, the placement of the capsule on the tube can not be done with a variation of 180 °. A shoulder 2, incliner makes the transition between the cylindrical neck 3 and the elliptical skirt 1. Near the junction with the elliptical skirt 1, the shoulder 2 has a high edge 5 of approximately 1.5 millimeters. The shoulder 2 is a regulated surface generated by a line that rests on a circle at the base of the neck and on the ellipse at the top of the edge. It is inclined in the sense that it is not perpendicular to the walls of skirt 1 and neck 3. At the level of the large axis, its slope is close to 20 ° and at the level of the small axis, the slope of part 8 of the shoulder is of the order of 60 °. The inner wall of the external elliptical skirt 13 of the base of the capsule 10 comes into contact, at the level of the small axis (zone 20), on this part 8 of the shoulder that guides it progressively to the final position. At the end of the engagement, the open end 21 of said outer elliptical skirt 13 arrives on the edge 5, its inner wall is adapted, overlapping it, to the elliptical shape of the edge 5 of the shoulder 2. The cylindrical neck 3 is long enough to guaranteeing a centering of the service capsule 10 and a good alignment of the axes of the sealing skirt 14 of the capsule and of the neck before the introduction of said skirt into said neck. The substantially irreversible fixing is ensured by snap-fastening means: a snap-in flange 6 below the discontinuous rib (4a and 4b) of the neck and a snap-in flange 16 on the inner wall of the axial blades (12a and 12b) of the capsule 10. Each circumferential rib portion 4a and 4b is extended at one of its ends by a longitudinal radial rib 7a and 7b serving as a stop to the rotation and glide during the axial fit of the capsule . Each axial blade 12a and 12b has three regularly distributed longitudinal radial ribs 17 on its inner wall which serve to maintain the capsule well on the tube head. Reinforcement ribs 15a and 15a2; 15bl and 15b2 are placed perpendicular to the side walls of the axial slats. When the seaming flange 16 is not continuous (to reduce the snapping force during seaming), it is replaced by seaming washers arranged as regularly as possible. Preferably, the reinforcing ribs are then placed with respect to the aforementioned snap-on washers, in order to locally give the axial blade a suppleness of rigidity favorable to the maintenance of the seaming. Preferably, these reinforcing ribs do not extend to the outer skirt in order to avoid any unsightly phenomenon (coloring, different dullness at wall intersections). EXAMPLE 2 (FIGURE 3) Example 2 is a variant of the previous example, characterized in that the external skirt 13 of the capsule does not come in the prolongation of the elliptical soft skirt 1 and because the shoulder 3 does not come with an elliptical edge 5. The open end 21 'of the capsule is a left contour, in the form of a "saddle", which coincides with the contact contour, defined geometrically by the intersection between the cylinder of elliptical orthogonal section bearing the external skirt of the base of the capsule and the regulated surface that carries the wall of the shoulder. ADVANTAGES OF THE PROCEDURE ACCORDING TO THE INVENTION Simple and safe system that allows to fix a capsule in the good position, even with high production rates. It is noted that in relation to this date, the best method known to the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention.

Claims (20)

1. CLAIMS Having described the invention as above, the contents of the following claims are claimed as property: 1. Container provided with a head comprising a neck of substantially circular cylindrical distribution and a shoulder connecting the said neck with the rest of said container, said container is intended to receive the oriented capsule of any one of claims 11 to 14, which comprises a base provided with one or more axial slats and an outer skirt whose open end, upon completion of the fitting of said capsule in the aforesaid The container is flush with the wall of said container and defines a border contour on the wall of said container, characterized in that: the neck is provided with a discontinuous annular rib, leaving one or several intervals that perform a function of lock intended to cooperate with the lame (s) axil (s) of the su oriented capsule sodicha; the neck is provided with means for immobilization in axial translation which cooperate with those of the aforesaid capsule oriented in such a way that the axial immobilization occurs when the open end of the external skirt of the capsule is flush with the wall of the container; the shoulder has a half sphere shape that passes through the aforementioned border contour and a circle of the base of the neck, the convexity of the aforementioned half sphere, calculated with respect to the exterior of the container, is positive or null.
2. 2. Container according to claim 1, characterized in that it is a soft tube.
3. 3. Container according to claim 1 or 2, characterized in that the shoulder is a regulated surface that rests on a circle of the base of the neck and the border contour. Container according to claim 3, characterized in that the slope of the shoulder is, in its part closest to the axis of said neck, greater than 60 °. Container according to any one of claims 1 to 4, characterized in that the border contour is an ellipse. Container according to claim 5, characterized in that the shoulder is provided with an elliptical edge, so that upon completion of the fitting of said capsule in said neck, the open end of the outer skirt of the said capsule fits around of the aforementioned edge. Container according to any one of claims 1 to 6, characterized in that the neck protrudes from the discontinuous annular rib of a height greater than 3 mm. Container according to any one of claims 1 to 7, characterized in that the portions of said discontinuous annular rib extend in at least one of its ends by a longitudinal radial rib 9. Container according to any one of claims 1 to 8 , characterized in that the discontinuous annular rib has a single interval. Container according to any one of claims 1 to 8, characterized in that the discontinuous annular rib has at least two regularly distributed intervals and with unequal extensions. 11. Oriented capsule, comprising a base and an outer skirt, intended to be fixed in a substantially irreversible manner in the head of the container according to any one of claims 1 to 10, said container comprises a substantially cylindrical neck provided with a discontinuous annular rib. , said base is provided with a sealing skirt that fits inside said neck, characterized in that: - the open end of said outer skirt has a shape that does not have a symmetry of revolution with respect to the axis of the aforementioned skirt. tightness and that is such that upon completion of the fitting of the said capsule in said container, said open end is flush with the wall of said container. The aforementioned base of the capsule is provided with a set of axial slats in the vicinity of the aforementioned sealing skirt, the aforementioned assembly performs the function of a key that is inserted in the set of intervals of the discontinuous rib of said neck, the set of the axial blades is also provided with means of immobilization in axial translation that cooperate with those of the neck, such that axial immobilization occurs when the open end of the outer skirt of the capsule is flush with the wall of the container. Capsule according to claim 11, characterized in that said axial slats are in the form of annular sectors whose common axis coincides with that of the aforementioned sealing skirt. Capsule according to claim 11 or 12, characterized in that the base is provided with a single axial lamella. Capsule according to claim 11 or 12, characterized in that the base is provided with at least two regularly distributed axial slats and with unequal sections. 15. Set of a container according to claim 9 and a capsule according to claim 13. 16. Assembly of a container according to claim 10 and an oriented capsule according to claim 14. Assembly according to claim 15 or 16, characterized because the means of immobilization in axial translation, with which the neck and the axial blades are provided, are complementary beading flanges. Assembly according to claim 17, characterized in that the said axial slats are provided on their internal walls with regularly distributed axial ribs, with an axial height such that they come against the seaming flange of the neck at the end of the fitting and with a height radial such that they are in contact with the external wall of the neck when the capsule is fixed in said neck. Assembly according to claim 17 or 18, characterized in that said axial slats are provided with regularly distributed snap rings, located in the extension of all or part of the said axial ribs and because, with respect to said snap-on washers, have reinforcing fabrics perpendicular to the side wall of the said axial slats. The packing method used by the capsule according to claim 11 and the container according to claim 1, characterized in that: a) said capsule is placed with respect to the head of said container and then the assembly is subjected to an axial fitting force relative to one another, in such a way that the aforementioned sealing skirt is inserted in said neck until at least one axial blade comes against the aforementioned discontinuous annular rib.; b) the capsule, still subjected to a slight axial support effort in the direction of the container, is subjected to a relative rotation with respect to the neck of the container until the key constituted by the shaft (s) axially ) entering the lock constituted by the interval (s) of the discontinuous annular rib; c) once the above-mentioned key has been inserted in the aforementioned lock, the capsule), still subjected to the axial relative clamping force, follows a movement of axial translation until its immobilization and its fixing is substantially irreversible, also having the possibility of rotating around the axis of the sealing skirt, the rotation is guided by the evolutionary contact between the inclined shoulder and the internal part of the outer skirt of the base of the capsule and the final placement is obtained by matching the contour of the open end of the capsule. external skirt with the border contour of the container, the latter do not present symmetry of revolution around the axis of the sealing skirt and the axis of the neck respectively. ORIENTED PLUGGING DEVICE AND RECIPIENT SUMMARY OF THE INVENTION The invention relates to a container assembly provided with an upper part having a cylindrical neck (3) and a lid (10) which. includes a base (11) to be fixed on top of the container, the base of the cover is provided with an outer skirt (13) of which the wall is adjacent to that (1) of the container. The profile that represents the boundary between the outer skirt of the lid and that of the container is of any type but is not centered on the neck axis. The container is provided with an inclined shoulder (2). The base of the lid is provided with a sealing skirt (14) that penetrates into the neck and several axial sheets (12a, 12b), of which the sections are preferably in the form of annular sectors. The neck is provided with a discontinuous annular rib (4), leaving one or more free spaces (9a, 9b) engaging the shapes of the corresponding axial sheet sections. The neck and the axial blades are provided with press fit coupling means (6 and 16).