EP2903907B1 - Packaging device and method for assembling it - Google Patents

Description

The present invention relates to a method for assembling a packaging device comprising a glass container, particularly intended to receive a cosmetic product.

In the field of packaging, it is conventional for a glass container to be produced by blow molding. In such a case, a container is produced provided with a tubular neck of narrow dimensions, which can be closed in a sealed manner by any suitable means. The dimensional accuracy of such a blowing process being quite low, the sealing solution must be oversized. Tight sealing is facilitated by the small dimensions of the opening, which make it easy to oversize the sealing solution to ensure a sufficiently tight result for the desired application. An example can be found for example in US 6,158,604 . However, glass blowing is a technique that only controls the external shape given to the container. Consequently, it is common for a glass container resulting from a blowing process to have an uncontrolled irregular internal shape, in particular when the blowing is carried out so that the container has a polygonal external shape.

However, the control of the internal shape of glass containers is increasingly required, in particular in the cosmetics industry or that of spirits where the aesthetics of the packaging holds a particularly important place.

There is an alternative technique for making a glass container, allowing control of both the exterior shape and the interior shape. This alternative technique is glass pressing. However, the production of a pressed glass container does not allow the container to have a tubular neck of narrow dimensions, as may be the case when the container is made of blown glass. The pressed glass container therefore conventionally defines an opening of large dimensions, of the order of those of a forming punch.

It is known from the prior art to close the pressed glass container by means of a threaded lid provided with a disc-shaped seal so as to seal the packaging device. However, such a solution is limited to the production of containers comprising a circular opening.

It is also known from the prior art to close a plastic container by clipping on a lid. US 3,223,278 gives an example of such a realization. However, glass does not allow as good control of manufacturing tolerances as plastic. Consequently, it would be difficult to transpose such a solution to a glass container in order to ensure the tightness of the packaging device.

The present invention proposes an alternative solution suitable for packaging devices comprising a pressed glass container of any shape.

• un récipient en verre pressé, ledit récipient comportant une ouverture, un bord de ladite ouverture formant un bourrelet ;
• une pièce de fermeture comportant au moins une paroi latérale constituée d'un matériau déformable élastiquement,
  ladite au moins une paroi latérale étant munie d'un relief interne, ledit relief formant un moyen d'assemblage par emboîtement élastique autour du bourrelet
• une pièce de verrouillage, apte à être serrée autour de ladite au moins une paroi latérale de la pièce de fermeture, ladite pièce de verrouillage comprenant au moins une paroi latérale constituée d'un matériau peu déformable élastiquement ;
  • la pièce de fermeture ou le récipient en verre comportant une ouverture donnant accès au produit du dispositif d'emballage,
  • le procédé comprenant les étapes suivantes :
    • la pièce de fermeture est assemblée au récipient en verre par emboîtement élastique de l'au moins une paroi latérale de la pièce de fermeture autour du bourrelet, par déplacement du récipient par rapport à la pièce de fermeture selon une direction d'assemblage, ledit emboîtement élastique assurant un contact étanche entre la pièce de fermeture et le récipient ;
    • la pièce de verrouillage est serrée autour de ladite au moins une paroi latérale de la pièce de fermeture.

More specifically, an object of the present invention is a method of assembling a packaging device for a cosmetic product, said device comprising:

• a pressed glass container, said container having an opening, one edge of said opening forming a bead;
• a closure piece comprising at least one side wall made of an elastically deformable material,
  said at least one side wall being provided with an internal relief, said relief forming an assembly means by elastic interlocking around the bead
• a locking piece, adapted to be clamped around said at least one side wall of the closure piece, said locking piece comprising at least one side wall made of a material that is not very elastically deformable;
  • the closing part or the glass container comprising an opening giving access to the product of the packaging device,
  • the method comprising the following steps:
    • the closure piece is assembled to the glass container by elastic fitting of the at least one side wall of the closure piece around the bead, by displacement of the container relative to the closure piece in an assembly direction, said fitting elastic providing sealed contact between the closure piece and the container;
    • the locking part is tightened around said at least one side wall of the closing part.

Such an assembly method has the advantage of being suitable for a glass container made by pressing, and of not limiting the shape of said container to a tubular shape, and in particular the shape of its opening to a shape of revolution.

According to one embodiment, the closure part further comprises a compressible or deformable gasket applied against the bottom of the closure part before the assembly of the closure part and of the glass container, the elastic interlocking of said at least a side wall of the closure part around the bead ensuring leaktight contact between the seal and the edge of the container on the one hand, and between the seal and the closure part on the other hand.

According to one embodiment, the locking piece is inserted by force along the assembly direction.

According to the invention, the edge comprises an annular body from which the bead projects, the annular body has an inner surface and an outer surface parallel to the inner surface, one and/or the other of these surfaces being of non- circular transversely to the assembly direction. Indeed, the method makes it possible to produce a sealed assembly, in particular on geometries that are not of revolution.

Alternatively, according to the invention, the inner surface of the annular body allows a rigid volume to pass corresponding to a homothety at a ratio of between 75% and 120% of the volume defined by the inner surface. of the main body. In other words, the container has a large opening.

• le relief interne est continu sur tout le pourtour de l'au moins une paroi latérale,
• la pièce de verrouillage est serrée autour de ladite au moins une paroi latérale de la pièce de fermeture par insertion en force de la pièce de verrouillage autour de ladite au moins une paroi latérale de la pièce de fermeture,
• la pièce de verrouillage est serrée autour des parois latérales de la pièce de fermeture par insertion en force de la pièce de verrouillage autour des parois latérales de la pièce de fermeture,
• la pièce de fermeture comporte un fond de forme sensiblement complémentaire à celle de l'ouverture du récipient ;
• la pièce de fermeture comporte un fond et la pièce de fermeture est assemblée au récipient en verre par translation du bourrelet vers le fond de la pièce de fermeture ;
• la pièce de fermeture comporte au moins une paroi latérale dont un bord libre est continu ;
• la pièce de fermeture comporte des parois latérales dont un bord libre est continu, les parois latérales étant munies du relief interne, le relief interne est continu sur tout le pourtour des parois latérales, la pièce de verrouillage étant insérée en force autour des parois latérales de la pièce de fermeture ;
• la pièce de fermeture comporte des parois latérales dont un bord libre est continu, les parois latérales étant munies du relief interne, le relief interne est continu sur tout le pourtour des parois latérales, la pièce de fermeture est assemblée au récipient en verre par emboîtement élastique des parois latérales autour du bourrelet, et subsidiairement ledit emboîtement élastique assure un contact étanche entre la pièce de fermeture et le bord du récipient ;
• la pièce de verrouillage est constituée d'un matériau peu déformable élastiquement.

According to certain embodiments, the method also comprises one and/or the other of the following characteristics:

• the internal relief is continuous all around the at least one side wall,
• the locking part is tightened around said at least one side wall of the closure part by forcing the locking part around said at least one side wall of the closure part,
• the locking part is tightened around the side walls of the closing part by forcing the locking part around the side walls of the closing part,
• the closing part comprises a bottom of shape substantially complementary to that of the opening of the container;
• the closure piece has a bottom and the closure piece is assembled to the glass container by translation of the bead towards the bottom of the closure piece;
• the closure piece comprises at least one side wall, one free edge of which is continuous;
• the closure part comprises side walls, a free edge of which is continuous, the side walls being provided with the internal relief, the internal relief is continuous over the entire periphery of the side walls, the locking part being force-fitted around the side walls of the closure piece;
• the closure piece comprises side walls, a free edge of which is continuous, the side walls being provided with the internal relief, the internal relief is continuous over the entire circumference of the side walls, the closure piece is assembled to the glass container by elastic fitting side walls around the bead, and alternatively said elastic fitting ensures leaktight contact between the closure piece and the edge of the container;
• the locking piece is made of a material which is not very elastically deformable.

• un récipient en verre pressé, ledit récipient comportant une ouverture, un bord de ladite ouverture formant un bourrelet ;
• une pièce de fermeture comportant au moins une paroi latérale constituée d'un matériau déformable élastiquement,
  • ladite au moins une paroi latérale étant munie d'un relief interne, ledit relief formant un moyen d'assemblage par emboîtement élastique autour du bourrelet,
  • ledit emboîtement élastique assurant un contact étanche entre la pièce de fermeture et le récipient ;
• une pièce de verrouillage, serrée autour de ladite au moins une paroi latérale de la pièce de fermeture, ladite pièce de verrouillage comprenant au moins une paroi latérale constituée d'un matériau peu déformable élastiquement ;

The invention also relates to a packaging device for a cosmetic product comprising

• a pressed glass container, said container having an opening, one edge of said opening forming a bead;
• a closure piece comprising at least one side wall made of an elastically deformable material,
  • said at least one side wall being provided with an internal relief, said relief forming an assembly means by elastic interlocking around the bead,
  • said elastic interlocking ensuring leaktight contact between the closure part and the container;
• a locking piece, clamped around said at least one side wall of the closure piece, said locking piece comprising at least one side wall made of a material that is not very elastically deformable;

The closing part or the glass container comprising an opening giving access to the product of the packaging device.

According to the invention, the edge comprises an annular body from which the bead projects, the annular body has an inner surface and an outer surface parallel to the inner surface, one and/or the other of these surfaces being of non- circular transversely to the assembly direction.

As a variant, according to the invention, the inner surface of the annular body makes it possible to pass a rigid volume corresponding to a homothety at a ratio between 75% and 120% of the volume defined by the interior surface of the main body.

According to one embodiment, the closure piece is able to form a sealed connection with at least two surfaces of the edge of the container chosen from an internal side surface, an upper surface and the bead.

According to one embodiment, the closure piece comprises a face capable of coming to be compressed against an edge of the edge of the container formed between an upper surface and an internal lateral surface or the bead.

According to one embodiment, the closure piece comprises at least one protruding element capable of forming a sealing line against the edge of the container.

According to one embodiment, the closure part comprises a compressible seal capable of forming a leaktight connection between the edge of the container and the closure part.

According to one embodiment, the seal is able to form a leaktight connection between the closure part and at least two surfaces of the edge of the container chosen from an internal side surface, an upper surface and the bead.

According to one embodiment, the seal has a face capable of coming to compress against an edge of the edge of the container formed between an upper surface and an internal lateral surface or the bead.

According to one embodiment, the seal comprises at least one protruding element capable of forming a sealing line against the edge of the container.

According to one embodiment, the bead is continuous all around the edge.

According to one embodiment, the opening has a cylindrical shape which is not of revolution.

According to one embodiment, the closure piece comprises the opening giving access to the product.

According to one embodiment, the locking part comprises an opening communicating with the opening giving access to the product of the closing part.

According to one embodiment, the container comprises the product access opening.

According to one embodiment, the locking piece has a free edge in intimate contact with the container.

According to one embodiment, the locking part is permanently assembled to the container.

• le relief interne étant continu sur tout le pourtour de l'au moins une paroi latérale,
• la pièce de verrouillage est insérée en force autour de ladite au moins une paroi latérale de la pièce de fermeture,
• la pièce de fermeture comporte un fond de forme sensiblement complémentaire à celle de l'ouverture du récipient ;
• la pièce de fermeture comporte un fond et la pièce de fermeture est assemblée au récipient en verre par translation du bourrelet vers le fond de la pièce de fermeture ;
• la pièce de fermeture comporte au moins une paroi latérale dont un bord libre est continu ;
• la pièce de fermeture comporte des parois latérales dont un bord libre est continu, les parois latérales étant munies du relief interne, le relief interne est continu sur tout le pourtour des parois latérales, la pièce de verrouillage étant insérée en force autour des parois latérales de la pièce de fermeture ;
• la pièce de fermeture comporte des parois latérales dont un bord libre est continu, les parois latérales étant munies du relief interne, le relief interne est continu sur tout le pourtour des parois latérales, la pièce de fermeture est assemblée au récipient en verre par emboîtement élastique des parois latérales autour du bourrelet, et subsidiairement ledit emboîtement élastique assure un contact étanche entre la pièce de fermeture et le bord du récipient ;
• la pièce de verrouillage est constituée d'un matériau peu déformable élastiquement.

According to certain embodiments, the device further comprises one and/or the other of the following characteristics:

• the internal relief being continuous over the entire circumference of the at least one side wall,
• the locking part is force-fitted around said at least one side wall of the closing part,
• the closing part comprises a bottom of shape substantially complementary to that of the opening of the container;
• the closure piece has a bottom and the closure piece is assembled to the glass container by translation of the bead towards the bottom of the closure piece;
• the closure piece comprises at least one side wall, one free edge of which is continuous;
• the closure part comprises side walls, a free edge of which is continuous, the side walls being provided with the internal relief, the internal relief is continuous over the entire periphery of the side walls, the locking part being force-fitted around the side walls of the closure piece;
• the closure piece comprises side walls, a free edge of which is continuous, the side walls being provided with the internal relief, the internal relief is continuous over the entire circumference of the side walls, the closure piece is assembled to the glass container by elastic fitting side walls around the bead, and alternatively said elastic interlocking ensures leaktight contact between the closure part and the edge of the container;
• the locking piece is made of a material which is not very elastically deformable.

The embodiments described above can advantageously be combined.

• Figure 1 : une vue en perspective éclatée d'un dispositif d'emballage pour produit cosmétique selon un mode de réalisation de l'invention ;
• Figure 2 : une vue en coupe transversale du dispositif d'emballage représenté à la figure 1, à un état dit assemblé ;
• Figure 2a : une vue de détail de la figure 2 ;
• Figure 2b : une vue de détail du récipient de la figure 2
• Figures 3a et 3b : des vues schématiques respectivement de côté et de dessus d'une forme extérieure de récipient selon un mode de réalisation ;
• Figures 4a, 4b, 4c, 4d : des vues similaires à la figure 3a pour d'autres modes de réalisation,
• Figure 5 : une variante de réalisation d'une pièce de fermeture en vue de dessus,
• Figure 6 : une vue similaire à la figure 2a pour une variante de réalisation d'une pièce de fermeture,
• Figure 7 : une vue partielle de côté pour une variante de géométrie,
• Figure 8 : une variante de mise en oeuvre de dispositif d'emballage,
• Figure 9 : une vue schématique d'une variante de mise en oeuvre,
• Figure 10 et 11 : une variante de mise en oeuvre (vue de détail et vue schématique, respectivement),
• Figures 12a et 12b des vues latérales de détail de variantes de réalisation de la pièce de verrouillage,
• Figure 13, une vue schématique d'un procédé de pressage.

The invention will be better understood on reading the following description and on examining the accompanying figures. These are given as an indication and in no way limit the invention. The figures show:

• Figure 1 : an exploded perspective view of a packaging device for a cosmetic product according to one embodiment of the invention;
• Figure 2 : a cross-sectional view of the packaging device shown in figure 1 , in a so-called assembled state;
• Figure 2a : a detail view of the figure 2 ;
• Figure 2b : a detail view of the container of the figure 2
• Figures 3a and 3b : schematic side and top views respectively of an outer form of container according to one embodiment;
• Figures 4a, 4b, 4c, 4d : views similar to the picture 3a for other embodiments,
• Figure 5 : an alternative embodiment of a closure part seen from above,
• Figure 6 : a view similar to the figure 2a for an alternative embodiment of a closure piece,
• Picture 7 : a partial side view for a geometry variant,
• Figure 8 : a packaging device implementation variant,
• Figure 9 : a schematic view of an implementation variant,
• Picture 10 And 11 : an implementation variant (detail view and schematic view, respectively),
• Figures 12a and 12b detailed side views of alternative embodiments of the locking part,
• Figure 13 , a schematic view of a pressing process.

There figure 1 shows an exploded perspective view of a device 100 for packaging cosmetics or spirits according to one embodiment of the invention.

The packaging device 100 comprises a container 101 made of glass. The glass container 101 is for example produced by a pressing process.

As seen on the figure 13 , as shown very schematically, a body cavity 2, an opening cavity 36 and a punch 3 are used, together forming a cavity receiving a glass parison 35. The punch 3 is movable relative to the cavities 2 and 36 between a position output, and an input position in which the cavity gives the future shape of the container 101. As can be understood, the container 101 therefore has a wide opening to allow the punch to pass. The punch 3 defines the internal shape of the container 101, and the imprints its external shape. The opening cavity 36 can be used to shape a bottle assembly interface, this assembly interface serving to close the bottle.

If necessary, the pressing step described below is followed by a blowing step, during which the main body 163 is deformed by blowing into its interior volume. This blowing step can increase the internal volume of the bottle by approximately 10% to 20%, if it is desired to retain the geometric particularities of the internal surface, obtained during the pressing step. The term “pressed” used here refers to any implementation comprising a pressing step, including cases where this is followed by a blowing step.

In the example, the container 101 has the shape of a cylinder arranged along an axis 102 and of substantially rectangular section. When we talk about the shape of the container 101, we are mainly interested in the shape of its main body 163. The container 101 has a main body 163 presenting the major part of its volume, and an assembly interface 142, coming from material with the latter, and which will be described in more detail later. That is to say that the container 101 has a hollow shape capable in itself of retaining a liquid or a paste. The container 101 comprises a bottom 133 from which extends a peripheral wall 134. Thus, when it is said that the container 101 has the shape of a cylinder, it is understood that the peripheral wall 134 has an overall cylindrical shape. The container 101 has an internal face 135, intended to be in contact with the contents of the container 101, and an external face 136 opposite the internal face. Thus, the bottom 133 and the peripheral wall 134 each have an inner face, respectively 137 and 138, together forming part of the inner face 135 of the container. Thus, the bottom 133 and the peripheral wall 134 each have an outer face, respectively 139 and 140, together forming part of the outer face 136 of the container. In the example shown, the outer face 139 of the bottom 133 defines a resting surface 141 of the packaging device 100. That is to say that in normal storage, the packaging device 100 can be held in balance being laid with its laying surface 141 resting on a horizontal surface of a support such as furniture. The peripheral wall 134 extends transversely to the laying surface 141. In the example shown, it extends orthogonally to this laying surface 141. Thus, when we say that the container 101 has the shape of a cylindrical, reference is mainly made here to the general shape of the outer face 140 of the peripheral wall 134 between the bottom and the assembly interface. It will be recalled here that, by cylinder, is meant a shape generated by the path of a straight line parallel to a generating direction according to a closed profile of any shape. In the present example, the generating direction is the normal to the bearing surface 141. In the present case, the closed profile is of substantially rectangular geometry. “Substantially rectangular” here means a closed profile having the shape of a rectangle, the corners of which are rounded.

However, it is possible to adapt other shapes to the container 101, such as polygonal, spheroid or even arbitrary shapes.

With regard to the forms mentioned above, the following will be understood:
With respect to polygonal shapes, the polygonal shape is shown here with reference to the substantially rectangular section above. That is to say that the closed profile mentioned above has a polygonal shape comprising at least three sides, typically a triangle, a quadrilateral such as a rhombus, a trapezium, a square, a rectangle, a parallelepiped, or another polygon with five or more sides. The polygon can be either regular (one or more times symmetrical, sides of equal length, etc.) or non-regular. Moreover, like above for the rectangle, it may be a substantially polygonal shape, for example a polygon with rounded corners.

With regard to spheroid shapes, we obviously understand here that this expression is not opposed to "rectangular" but rather to "cylindrical". Thus, according to this embodiment, the main body 163 of the container 101 globally comprises the external shape of a truncated half-sphere, as seen on the figures 3a and 3b . Thus, the peripheral wall 134 has an outer face 140 in the shape of a portion of a sphere. The outer face 139 of the bottom 133 can have a flat shape to serve as a laying surface 141. The word “spheroid” refers to a geometry close to that of a portion of a sphere.

Thus, as we have already seen for two different embodiments, the external shape of the main body 163 of the container 101 can be very varied, including in particular a cylindrical shape with a substantially rectangular or polygonal profile, or a spheroid shape. By the expression “any shape” of the container 101, it is therefore understood that we are not limited to these two embodiments, and that others could be provided, provided that they are compatible with the structure of the device, as can be understood by those skilled in the art. Possible variants are for example implemented from a cylindrical shape, whose section perpendicular to the axis of the generatrix is no longer necessarily constant but can vary, for example homothetically, for example by forming a cone converging, diverging, an indentation or a bead as visible respectively at the figures 4a, 4b, 4c and 4d .

It will be noted that, in the foregoing, the shape described relates mainly to the external shape of the container 101. The internal shape of the container 101 can be independent of the external shape of the latter, as long as the container can be manufactured (in particular by a pressing process) and used in the desired configurations (which imposes for example a minimum glass thickness depending on the desired application).

The container 101 has an opening 103 arranged along the axis 102. The opening 103 is here opposite the bottom 133. In the example shown, the opening 103 is flat and of substantially rectangular shape. However, the opening 103 could also be of any polygonal shape, or else of oval or circular shape.

The opening 103 of the container 101 has an edge 104 forming a bead 105. The bead 105 is arranged substantially perpendicular to the axis 102. The bead 105 of the container 101 is particularly visible on the figure 2 , there figure 2a and the figure 2b .

It is therefore understood that the term opening 103 is not used here to designate, according to common sense, an empty access space, but rather designates an assembly interface 142 of the container 101 comprising an edge 104 surrounding this space. void of access 143.

As seen on the figure 1 , the invention is particularly suitable for large openings. Intrinsically, when a pressing process is implemented, a cutting punch is passed through the empty access space 143 to form the lower surface of the main body. The empty access space 143 is therefore of sufficient dimensions to allow this punch to pass, and is arranged in a manner adapted to the internal shape of the main body. Thus, if the punch is moved along a trajectory, the shape of the empty access space 143 in section normal to this trajectory covers the shape defined by the inner face of the main body normal to this trajectory. The empty access space 143 has, in this section, a greater dimension greater than 3 centimeters, or even greater than 5 cm, in particular greater than 7 cm, preferably greater than 10 cm.

This assembly interface 142 comprises an edge 104 of the container 101. The edge 104 forms a bead 105. It is understood here that the term “edge” is not used here to designate, according to common sense, a line or a surface forming an edge, but rather a volume of small dimensions compared to the volume of the container 101. The assembly interface 142 extends along an assembly axis X. In the example presented, the assembly axis is coincides with the axis 102. The assembly interface 142 is made in one piece with the peripheral wall 134 of the container 101. In the example presented, the assembly interface comprises an internal lateral surface 124 continuous with the internal face 138 of the peripheral wall 134 of the container 101. The inner faces 138 and 124 can even be joined together in a smooth manner, without shoulder or inflection. It will be noted that as a variant, the internal lateral face 124 of the assembly interface 142 and the internal face 138 of the peripheral wall 134 are connected via a shoulder or another volumetric pattern. The assembly interface 142 has an outer face 146 opposite the inner side surface 124 . The outer face 146 is connected with the outer face 140 of the peripheral wall 134. An edge 147 of the assembly interface 142 extends between the inner 124 and outer 146 side faces.

In practice, the assembly interface 142 consists of an annular body 144 from which the bead 105 projects. The annular body forms a ring along the assembly direction X. The annular body 144 is defined, on the radially internal side, by the internal lateral face 124 of the assembly interface 142. The annular body 144 is defined, on the radially external side, by a virtual geometric surface 164 parallel to the internal face 124 at a distance d from the latter which is constant on the total periphery of the assembly interface.

In the example presented of a substantially rectangular shape, the annular body 144, in a section plane given normal to the direction X, has a set of rectilinear sections of thickness d, and rounded sections interconnecting the rectilinear sections . The difference between the interior radius of curvature and the exterior radius of curvature of the virtual geometric surface 164 is substantially d. The straight and rounded sections join each other tangentially.

If necessary, the virtual geometric surface 164 intercepts or has a surface in common with the outer face 146 of the assembly interface 142.

In the example presented, the assembly interface 142 is of low height compared to its two other dimensions according to the assembly direction, and it can be considered that it extends in a plane, which would be a median plane according to the direction of the height, which would be normal to the assembly direction. When reference is made to the shape of the opening, reference is made either generally to the shape of the internal face 124, or to the shape of the virtual geometric surface 164 in section in this plane. Thus, when it is said that the opening is substantially rectangular in shape, reference is made to the particular embodiment of the figure 1 where the section of the outer shape of the virtual geometric surface 164 is substantially rectangular. Thus, it is understood that the section of the virtual geometric surface 164 of the edge 104 is substantially rectangular. Similarly, the section of the inner face 124 is substantially rectangular. "Substantially" is used here to denote a rectangle with rounded edges, as for the main body 163.

When reference is made to any polygonal, oval or circular shape of the opening 103, reference is also made here to the shape of the virtual geometric surface 164 in section orthogonal to the assembly direction.

In general, the invention finds its application for a circular shape of the opening 103, that is to say of the virtual geometric surface 164 in section normal to the direction of assembly, but more particularly for a shape not circular. Since it is a non-circular shape, the skilled person knows what level of smoothness to expect from a surface formed during a glass pressing process. A non-circular shape is considered as such from the moment a person skilled in the art knows how to determine, by observing the shape, that the latter was deliberately manufactured with a view to being non-circular. Thus, by non-circular, we do not cover circular shapes for which surface defects due to the manufacturing process modify the shape with respect to an ideally desired geometric circle. The shape in question is that of the internal surface 124, and/or of the virtual geometric surface 164, independently of the attachment reliefs protruding therefrom, such as the bead 105.

Bead 105 may be continuous along the periphery of container 101, as shown. In a plane normal to the assembly direction, it may have a constant thickness, or even a portion of constant thickness and portions having an excess thickness relative to this portion of constant thickness. In particular in areas with strong curvature, it may have such an excess thickness.

It will be noted that the shape of the outer face 146 is not necessarily of constant section along an assembly axis. It may in particular be a homothetic shape along the assembly axis. Thus, progressing along the assembly axis in cross section, we note that the edge 104 has a first narrowed portion 148, which may coincide with the virtual geometric surface 164, then a widened portion 149 forming the bead 105. The edge 104 may be thinner than the peripheral wall 134. In particular if the internal side surface 124 of the annular portion 144 is in the continuity of the internal face 138 of the peripheral wall 134, the external face 146 is located radially closer of the inner side surface 124 of the annular portion 144 than the outer face 140 is of the inner face 138. Consequently, the narrowed portion 148 forms a recess between the bead 105 and the peripheral wall 134. A shoulder 150 is provided at the junction between the peripheral wall 134 and the opening 103.

In the example, the edge 104 of the container 101 comprises a projecting element 106 ( figure 2a ), or rod, arranged substantially perpendicular to an upper surface 107 of said edge. The rod 106 is of small dimensions compared to the bead 105.

In summary, concerning the container 101, the latter has a main body 163 whose shape is any hollow, and an assembly interface 142 whose shape is suitable for sealing the packaging device. The assembly interface comprises in particular an annular body 144 from which projects a bead 105. The annular body 144 forms a ring of constant thickness over the entire periphery of the container. 101. In particular, the inner surface of this ring is a cylinder, in particular of non-circular section. The section is taken normally to the assembly direction. The outer surface (virtual surface delimited by virtual geometric surface 164) of this ring is a cylinder, in particular of non-circular section. The main body 163 and the annular body 144 are made in one piece, and are connected together in a technically suitable manner.

The opening of the container 101 is wide. It is noted, in the embodiment presented, that the annular body and the main body 163 can have dimensions of the same order in a plane normal to the direction of assembly. By the same order, it is understood that the inner surface of the annular body allows a rigid volume to pass corresponding to a homothety at a ratio of between 75% and 120% of the volume defined by the inner surface of the main body 163. This characteristic will be explained below.

According to an exemplary embodiment, the inner surface of the annular body makes it possible to pass through it a rigid volume corresponding to 100% of the volume defined by the inner surface of the main body. This characteristic should be understood in that the volume defined by the interior surface of the main body corresponds substantially to the volume of the one-piece punch passing through the annular body to form the interior of the container 101 during the pressing process. The inner surface of the annular body also cannot be too large, since the annular body must be integral with the main body 163. Therefore, the inner surface of the annular body allows a corresponding rigid volume to pass through it. at most 120% (preferably 110%) of the volume defined by the interior surface of the main body. In the case of a one-piece punch, a ratio of between 100% and 120% is therefore provided.

However, the punch is not necessarily one-piece, and may incorporate a mechanism that can move between two positions making it possible to generate reliefs inside the main body 163. However, even in these cases, the fixed body of the punch continues to constitute a substantial part of the interior volume. It is considered that most often, the fixed body of the punch will be inscribed in a homothety at 90% of the volume defined by the interior surface of the main body. Thus, generally for a direct pressing process, the ratio is between 90% and 120%.

As mentioned above, the pressing step can be followed by a blowing step which will slightly enlarge the interior volume of the main body 163 without significantly changing that of the annular body. Likewise, the main body 163 must remain integral with the annular body. Therefore, the interior volume is not enormously enlarged during this stage. The inner surface of the annular body allows a rigid volume to pass corresponding to a homothety at a ratio of between 75% (preferably at least 80%) and 100% of the volume defined by the inner surface of the main body 163.

The packaging device 100 further comprises a closing piece 108 . The closing part 108 comprises a bottom 109 ( picture 2 ) of substantially complementary shape to that of the opening 103, and in particular of the empty access space 143, of the container 101. Thus, in the example, the bottom 109 of the closing part 108 is of substantially rectangular shape .

The closure piece 108 includes an opening 110 extending from the bottom 109 to an upper surface 111 of said closure piece. The term “opening” is used here in its classic sense, namely an empty space allowing through access. In the example, the opening 110 is substantially arranged along the axis 102 of the container 101, during assembly of the device 100 for packaging. However, the opening 110 could also be offset with respect to the axis 102, as shown in the Figure 5 . In FIG. 5, the opening 110 is shown offset both along the width and along the length of the rectangular shape with respect to the figure 1 . The opening 110 is capable of receiving a product dispensing device 112, for example a capsule, a stopper or a pump. In the example, the opening 110 receives a pump 112.

In the example, the opening 110 also extends through a cylindrical portion 113 of the closure piece 108 protruding from the upper surface 111 of said closure piece. An upper end 114 of the cylindrical part 113 comprises a bead 115 on which the pump 112 is crimped or snapped ( figure 2 ). The dispensing device 112 could be assembled in any suitable way to the piece 108 of closure.

In the example, the closure part 108 comprises ribs 116 extending from the bottom 109 to the upper surface 111 of said closure part. The ribs 116 radiate around the opening 110 and are arranged substantially perpendicular to the upper surface 111 of the part 108 of closure. The ribs 116 make it possible to stiffen the closing part 108, so that the closing part 108 is in particular able to withstand the forces induced by the assembly of the product dispensing device 112 with the closing part 108 . They are for example arranged in a star around the cylindrical part 113, as represented on the figure 1 .

The closure part 108 also comprises side walls 117 made of an elastically deformable material, such as for example polypropylene, both suitable for elastic interlocking and chemically compatible with cosmetic products. A lower surface of the bottom 109 could also be made of a material compatible with cosmetic products. The description here refers to side walls 117 with reference to the embodiment described in particular which has a substantially rectangular shape. However, given that the invention applies equally well to other geometries, in particular non-polygonal, it is understood that "the walls 117" can be used interchangeably with "the wall 117" in the case where the geometry allows to have only one single wall. It is understood that the "side walls" together describe the entire periphery of the closure piece 108 (this also applies to the "side wall" in non-polygonal configurations). Closing part 108 can also be one-piece and therefore consist entirely of the elastically deformable material. The closure part 108 can thus deform slightly with respect to its state at rest to compensate for dispersions in the shape of the glass at the level of the assembly interface 142. The side wall 117 extends from the upper surface 111 . A groove 122 is provided between the side wall 117 and the bottom 109. The groove 122 has a shape substantially complementary to the shape of the edge 104 of the container 101. The bottom 109 may itself comprise a peripheral wall 151 extending from the lower face 152 opposite the upper face 111. The radially outer face 153 of the peripheral wall 151 has a shape complementary to the inner side surface 124 of the annular portion 144. The side wall 117 has a radially inner face 154 substantially complementary to the outer face 146 of the annular portion 144. The outer face 155 of the wall 117 is opposite the radially inner face 154. The outer face 155 of the wall 117 is inscribed in the virtual cylindrical volume generated from the outer face 140 of the peripheral wall 134 of the container along the axis assembly. The side walls 117 have a continuous free edge 118 . The term "edge" is used here in its common sense to designate the edge of the side wall between its radially inner face 154 and its outer face 155. By "continuous free edge" is meant the fact that the edge 118 free of the walls 117 sides does not include any interruption of material. The edge 118 is therefore free over the entire periphery of the side wall(s) 117. It will be noted, however, that as a variant, the edge 118 could be discontinuous.

In the example, an outer surface of an upper end 120 ( figure 2a ) of the side walls 117 of the part 108 of closure has a slightly frustoconical profile, flared by widening in the direction of the edge 118 free.

The side walls 117 of the closure piece 108 are provided with an internal relief 121 ( figure 2a ) forming an assembly means by elastic interlocking around the bead 105 of the container 101. Preferably, the internal relief 121 is continuous over the entire periphery of the side walls 117 or, depending on the configurations, as mentioned above, of the side wall 117 .

Thus, according to different variants, illustrated in particular in figures 12a and 12b , the free edge 118 of the side wall 117 may have notches (or slots) superimposed or not with the relief 121 continuous.

Closure part 108 further includes groove 122 ( figure 2 And 2a ) formed in the bottom 109 of said closure part. The groove 122 is delimited by the bottom 109 on the one hand, and by the side walls 117 on the other hand. The groove 122 is of substantially complementary shape to that of the edge 104 of the container 101, so as to accommodate the edge 104 of said container within it. Thus, the groove 122 is of substantially rectangular shape. By substantially rectangular shape, it is understood that in section along a plane normal to the assembly axis, the groove 122 has an annular shape corresponding to the annular shape of the edge 104 in the same plane. This annular shape has inner and outer surfaces in the shape of a rectangle with rounded corners.

In the example, the closure piece 108 includes a seal 123 ( figure 2 And 2a ) capable of forming a sealed connection between the edge 104 of the container 101 and the part 108 of closure. Seal 123 is preferably formed of a more compressible material than closure piece 108. Alternatively, the seal 123 is formed in a deformable incompressible material. The seal 123 is for example made of an elastomer such as rubber, a thermoplastic elastomer or a cellular material such as a polyurethane or polyethylene foam, in particular high density.

The seal 123 has a substantially complementary shape with the edge 104 of the container 101. Thus, the seal 123 substantially forms a rectangle. As regards the shape of the joint, the latter has an annular shape having a section that is substantially constant along the peripheral direction of the ring, and this periphery has a generatrix whose shape approximates a rectangle.

The groove 122 of the part 108 of closure is able to receive the seal 123. A section of the seal 123 is of substantially complementary shape to that of a profile of the groove 122, so that the seal 123 marries the walls of the groove 122. In particular, a shoulder 157 can be provided in the groove 122 to form a radial abutment surface receiving the seal 123.

According to one embodiment of the invention, the seal 123 is configured so as to form a sealed connection between the closing part 108 and a surface of the edge 104 of the container 101 chosen from among the bead 105, the upper surface 107 and a surface 124 internal side ( figure 2a ).

In this case, the seal 123 can for example take the form of a strip.

According to a preferred embodiment of the invention, the gasket 123 is configured so as to form a tight connection between the closing part 108 and at least two of the surfaces of the edge 104 of the container 101 chosen from among the bead 105, the surface 107 top and inner side surface 124.

In the example, the seal 123 has a substantially L-shaped section, so as to match the upper surface 107 and the internal side surface 124 of the edge 104 of the container 101. Such a section could also be applicable in the case where the we would like the seal 123 to marry the upper surface 107 and the bead 105 of the edge 104 of the container 101.

The seal 123 may also have a section of substantially triangular shape so that one face of said seal comes to compress against an edge 158, 158' of the edge 104 of the container 101 formed between the upper surface 107 and the internal side surface 124 or the bead 105, respectively.

A seal 123 of substantially U-shaped section could also be envisaged, so as to marry the upper surface 107, the internal side surface 124 and the bead 105.

According to one embodiment of the invention, the seal 123 comprises at least one protruding element 125, 126 or sealing lip capable of forming a sealing line against the edge 104 of the container 101. Preferably, the at least one sealing lip 125, 126 is of tapered shape.

In the example, the seal 123 has two sealing lips 125, 126 ( figure 2a ) each able to form a sealing line against the inner side surface 124 of the edge 104 of the container 101.

A number of sealing lips greater than two can also be envisaged, in particular when the gasket 123 is configured so as to form a leaktight connection between the closing part 108 and only one of the surfaces 105, 107 or 124 of the edge 104 of the container. 101.

When at least two sealing lips 125, 126 are used, they can also, depending on the configuration of the seal 123, be arranged so as to each form a sealing line against several of the surfaces 105, 107, 124 forming the edge 104 of container 101.

According to a variant represented on the figure 6 , the closure part 108 and the gasket 123 are made in one piece and made of the same material. This applies in particular in the case of the material polyethylene, or high density polyethylene. The characteristics of the joint 123 as well as the embodiments detailed above can be adapted to the part 108 of closure alone. For example, the closure part 108 can form a leaktight connection with one, two or three surfaces 105, 107, 124 of the edge 104 of the container 101. The closure part 108 can also comprise one or more protruding elements 125, 126 each capable of to form a seal line against the edge 104 of the container 101.

According to a variant, the closure piece has a face capable of coming to compress against an edge of the edge 104 of the container 101 formed between an upper surface 107 and an internal side surface 124 or the bead 105.

The packaging device 100 further comprises a locking part 127 capable of being inserted around the side walls 117 of the closing part 108 . It is understood here that the closure part 108 is adapted to be inserted into the locking part 127, with the part 127 of locking around the side wall(s) of the closing part 108 In the example, the slightly tapered profile of the outer surface 156 of the upper end 120 of the side walls 117 of the closing part 108 is intended to facilitate the assembly of the locking part 127 with the closing part 108.

The locking piece 127 is made of a material that is not very elastically deformable compared to the material of the closing piece 108 . Such a material may for example be metal or rigid plastic, or stiffened by a surface treatment such as galvanizing or lacquering.

The locking piece 127 has side walls 128 capable of surrounding the side walls 117 of the closing piece 108 . This example is always given for the embodiment, given as an example, having a substantially rectangular geometry. Thus, it is understood that for other embodiments, the locking part 127 comprises at least one side wall 128 capable of surrounding the side wall 117 of the closing part 108 . The rest of the description continues to refer to the specific geometry of the embodiment presented, but can however be adapted to any other embodiment. The side walls 128 of the locking part 127 are configured so as to form a tight connection with the closing part 108, in particular with the side wall(s) 117 thereof, when the side walls 128 of said locking part are inserted around the side walls 117 of the piece 108 of closure.

The locking piece 127 may include a bottom 129, and the side walls 128 extend from this bottom.

The side walls 128 of the locking piece 127 are substantially parallel to the side walls 117 of the closing piece 108 . In the example, the side walls 128 of the locking part 127 are substantially parallel to a lower end of the side walls 117 of the closing part 108 . Thus, the insertion of the side walls 128 of the locking piece 127 around the side walls 117 of the part 108 of closure makes it possible to lock the part 108 of closure around the bead 105 of the container 101 without causing an elastic deformation of said side walls 117 of the part 108 of closure.

In the example, the locking piece 127 also includes a bottom 129 ( figure 2 And 2a ) provided with an opening 130 capable of receiving the dispensing member such as the pump 112. In practice, in the example shown, the opening 130 accommodates the cylindrical part 113 on which the dispensing member is fixed. The opening 130 therefore forms an access opening to the product contained inside the packaging device. The opening 130 of the locking part 127 is configured so as to be substantially coaxial with the opening 110 of the closing part 108, during assembly of the device 100 for packaging. Consequently, the dispensing member can extend both through the locking part 127 and the closing part 108 to communicate the inside of the packaging device with the outside.

In the example, an axial retention of the locking part 127 on the closing part 108 is provided. For example, the locking part 127 is clipped onto the closing part 108. For example, a free edge 131 of the side walls 128 of the locking part 127 is provided with an internal relief 132 ( figure 2a ). The internal relief 132 of the locking part 127 is of small dimensions compared to the internal relief 121 of the closing part 108 . The internal relief 132 of the locking part 127 is capable of coming into abutment against the free edge 118 of the closing part 108 . For this, it will be noted that, in the example presented, when the closure part 108 is assembled to the container 101, a spacing 159 is defined between the free edge 118 of the side wall 117 of the closure part 108 and the shoulder 150 of the container 101. The internal relief 132 is received in this spacing 159 in the assembled position of the locking part 127 with the closing part 108.

The side wall 128 of the locking part 127 has an internal face 160 and an opposite external face 161. The free edge 131 of the wall 128 side connects together the inner faces 160 and outer 161. The inner face 160 has a geometry complementary to that of the outer face 155 of the side wall 117 of the part 108 of closure. The outer face 161 has any suitable shape. Note that, according to the embodiment presented, the free edge 131 comes into intimate contact with the shoulder 150 of the container 101. This can be verified over the entire periphery of the container 101. By intimate contact, it is meant that these two surfaces come into contact, or are spaced apart insignificantly on the scale of the product (in particular so that a tool the thickness of a knife blade or the like cannot be slipped between these surfaces). Furthermore, and quite independently, in the present embodiment, the outer face 161 is continuous with the outer face 140 of the container 101. This continuity can, as shown, be provided without shoulder or inflection.

The packaging device therefore comprises a glass container, which is very rigid, but whose shape has a certain dispersion, a flexible closure part that can deform elastically to compensate for the dispersions of the glass container, and a rigid locking part (stiffness intermediate between the glass and the closure piece) to hold the flexible closure piece and the glass container together. Where appropriate, a highly deformable seal further improves the interface between the glass and the flexible closure piece.

The method of assembling such a packaging device 100 takes place according to the following steps.

In the example, the seal 123 is initially applied against the bottom 109 of the part 108 of closure. More specifically, the seal 123 is deposited in the groove 122 formed in the bottom 109 of the part 108 of closure. According to one embodiment of the invention, the seal 123 can be cut or molded and then applied against the bottom 109 of the part 108 of closure, or even overmoulded in the part 108 of closure.

The closure part 108 is then assembled to the container 101 by elastic interlocking of the side walls 117 around the bead 105, by translation of the bead 105 towards the bottom 109 of the closure part 108. The container 101 and the closure part 108 are moved relative to each other in an assembly direction. In the example, this assembly direction is a translation direction. For example, it merges with the axis 102. The continuous free edge 118 of the side walls 117 of the closure piece 108, and in particular the continuous relief 121, forces said side walls to deform radially, when the relief 121 passes internal on the bead 105, then to return to the non-deformed or slightly deformed state, when the internal relief 121 becomes lodged under the bead 105. The internal relief 121 of the closure part 108 is then abutted against the bead 105, thus preventing separation of the closure piece 108 and the container 101. The elastic interlocking of the side walls 117 of the closure piece 108 around the bead 105 is therefore carried out before the insertion of the locking piece 127 around side walls 117. It will be noted that this embodiment has the advantage that the side wall 117 is, when the packaging device is assembled, substantially in the state of rest, and that in any case the natural elasticity of the materials of the wall side 117 urges the side wall 117 to a state in which it is nested on the container and cooperates mechanically therewith.

The elastic interlocking of the side walls 117 around the bead 105 ensures leaktight contact between the seal 123 and the edge 104 of the container 101 on the one hand and the seal 123 and the closure part 108 on the other hand, by compression of said seal. . In the example, the sealed contact between the seal 123 and the edge 104 is more particularly achieved at the level of the upper surface 107 of the edge 104, in particular with the rod 106 of the edge 104, and at the level of the internal side surface 124, in particular by means of sealing lips 125, 126 each forming a sealing line.

In this configuration, the compression of the gasket 123 between the edge 104 of the container 101 and the closing part 108 transmits to the closing part 108 a force along the axis 102 tending to disengage the side walls 117 of the closing part 108, of the bead 105 of the container 101.

According to a variant, represented on the figure 6 , in which the closure part 108 and the seal 123 are in one piece and formed of the same material, the elastic interlocking of the side walls 117 around the bead 105 ensures leaktight contact between the closure part 108 and the edge 104 of the container 101, by compression of said closure piece. The edge 104 of the container 101 transmits to the compressed closure part 108 a force along the axis 102 tending to disengage the side walls 117 of the closure part 108 from the bead 105 of the container 101.

Then, the locking part 127 is inserted by force around the side walls 117 of the closing part 108 . This insertion is performed via a relative translational movement along the assembly direction of the locking part 127 and of the container 101 and closing part 108 assembly assembled together on the other hand. The slightly frustoconical profile 156 of the upper end 120 of the side walls 117 of the part 108 of closure aids the insertion of the side walls 128 of the part 127 of locking around said side walls of the part 108 of closure. The side walls 128 of the locking part 127 slide along the side walls 117 of the closing part 108, without causing any significant elastic deformation of said side walls of the closing part 108 . The side walls 128 of the locking part 127 retain the side walls 117 of the closing part 108 around the bead 105 of the container 101, so as to prevent the side walls 117 of the closing part 108 from disengaging from the bead 105 The locking part 127 thus makes it possible to counteract the axial force transmitted to the closing part 108 by the compression of the gasket 123. The assembly of the packaging device is intended to be final, that is to say that nor the piece of closure nor the locking piece are intended to be removed from the container in normal use of the packaging device.

In the example, the container 101 is then filled with a cosmetic product. Then, the dispensing member, such as the pump 112, is inserted into the openings (110, 130) of the closing part 108 and of the locking part 127, then secured, for example by being crimped, snapped or screwed around the bead 115 of the cylindrical part 113 of said closure part. It will be noted in particular that the dispensing member is here assembled to the closure part 108, the cylindrical part 113 of the part 108 forming a fixing tube extending through the opening 130 of the locking part 127 . Alternatively, the dispensing member may be assembled to the part 127 of locking. The dispensing member is assembled in a leaktight manner to the closure part 108. Access to the product inside the packaging device is possible only through the intermediary of the dispensing member. The locking piece 127 is intended to be permanently assembled, in a tamper-proof manner, to the container 101. The tamper-evident feature is only mentioned here vis-à-vis the opening means directly accessible to the user of the device. packaging, such as a bottle opener or a knife blade. Although the inviolability is in particular authorized by the absence of asperity at the level of the interface between the free edge 131 of the locking part 127 and the shoulder 150, such an absence of asperity is not absolutely necessary for the implementation of the invention. This absence of asperity however also makes it possible to avoid the deposit of harmful material (dust, etc.) in this location.

If necessary, the locking part 127 can be glued to the closing part 108, or to the container 101, for example by gluing at the free edge 131.

Alternatively, the elastic interlocking of the side wall 117 of the closure part around the bead is caused by the force insertion of the locking part 127 around the side wall 117 of the closure part. In this example, the closure piece is assembled to the container 101 with a gap between the relief 121 and the bead 105. Then the locking part deforms the side wall 117 to generate the elastic fitting of the side wall 117 of the closure part around the bead.

Such a method of assembling a packaging device 100 has the advantage of not being limited to packaging devices 100 whose glass container 101 has a circular opening 103 . Thus, the method described above allows a wide variety of shapes of the glass container 101, and consequently a wide variety of shapes of the packaging device 100 as a whole. It is particularly suitable for containers 101 whose inner surface and/or the virtual geometric surface 164 of the annular portion 144 has a non-cylindrical shape of revolution. Indeed, for such geometries, sealing is very difficult to guarantee due to the peripheral non-uniformity of the forces applied to the seal. This is all the more true when the dimensions of the regions on which the sealing is to be achieved are large, as in the present case, where the opening 103 of the container is of a dimension of the order of the dimensions of the container 101 Tests have shown that the present invention allows, while allowing simple assembly, excellent levels of tightness.

The above embodiment presents in detail the case where the main body 163 of the container 101 has a substantially rectangular shape, and where the assembly interface 142 has a substantially rectangular shape. There are many variant embodiments. In particular, these forms are not necessarily closely correlated. These shapes could even be substantially independent of one another. As for the main body 163, its outer shape is substantially independent of its inner shape. Regarding the assembly interface, its inner and outer shapes can be very dependent on each other. In particular, a constant thickness of material is provided along the periphery of the assembly interface 142. Alternatively, in particular, a thickness of material is provided along the periphery of the assembly interface 142 as a function of the local curvature. In particular, provision is made for a gradual transition between two portions inclined relative to each other (note in particular on the figure 1 a curvature of the rounded edge of the assembly interface much lower than that of the main body 163).

The above embodiment presents in detail the case where the outer face 155 of the wall 117 is inscribed in the virtual cylindrical volume generated from the outer face 140 of the peripheral wall 134 of the container along the assembly axis , and where the outer face 161 of the side wall 128 coincides therewith, which improves the inviolability of the packaging device. However, as a variant, the outer face 161 of the side wall 128, or even the outer face 155 of the wall 117 could protrude from the virtual cylindrical volume generated from the outer face 140 of the peripheral wall 134 of the container along the axis d. 'assembly.

According to a variant represented on the figure 7 , the opening of the container may not be planar, for example having a curvature. In this case, in a given section including the assembly pin, the same principles as described above apply. However, the geometry may vary depending on the cutting plane chosen along the periphery of the container.

According to another variant, as shown in the figure 8 , the closure part can form a bottom of the container and not a cover as in the example shown in the figures and described above. A bottom is characterized in that, when the container 101 is placed on its resting surface 141, the content of the container 101 rests on the bottom.

In such an embodiment, the locking part 127 and the closing part 108 may not include openings 130, 110, respectively. In this case, the part 129 (hitherto called "bottom") of the locking part 127 can be made solid.

This variant can also be implemented in another embodiment, illustrated in the figure 10 And 11 , where locking part 127 was slightly modified to extend according to a larger extension. Thus, according to the embodiment of the Picture 10 , the locking part 127 not only forms a locking part, but comprises a portion forming a container. A container has a hollow shape capable in itself of retaining a liquid.

To summarize, for this embodiment, the container is manufactured as follows:
A hollow body 101 of packaging device glass is manufactured, the hollow body 101 being intended to be associated with a bottom 166 to constitute the packaging device, the hollow body 101 comprising an open lower end 143' giving access to a hollow interior, an upper end forming a bottle neck 165 suitable for mounting a dispensing member 112, such as a stopper or a pump, and a hollow main section connecting the two ends, this section defining an internal surface 135 and an external surface 136, the method comprising molding the hollow body 101 in a mold comprising one or more external cavities to form the external surface 136 and the bottle neck 165, molten glass being introduced into the external cavity or cavities.

During the process, a form punch is driven into the external cavity(ies) to press the molten glass into a molding/pressing cavity formed jointly by the external cavity(ies) and the form piston, the form punch penetrating the or the external cavities through an opening which corresponds to the open lower end 143' of the hollow body 101. The internal shape of the container can thus be controlled with great precision.

The bottom 166 comprises the closing part 108 and the locking part 127. The bottom 166 is fixed to the lower end of the hollow body 101 by the method described above. In particular, the closure piece is assembled to the glass container by elastic fitting of the at least one side wall of the closure piece around the bead, by displacement of the container relative to the closure piece in a direction assembly, said elastic interlocking ensuring leaktight contact between the closure part and the container. Then, the locking part is tightened around the side wall of the closing part.

In the present case, it will be noted that the inside of the bottle neck can be either formed by the shaped punch, or produced by machining, boring or drilling, then lapping of a closed pressed surface.

The closure piece 108 (and implicitly the locking piece 127 assembled thereto) may also form one side of the container, as shown in the figure. figure 9 . Depending on the embodiment chosen, the opening giving access to the product can be made in the closing part (and implicitly the locking part 127 which is assembled to it, for example figure 1 ) or in the glass container 101 (for example figure 8 , figure 9 ).

• un récipient 101 en verre, ledit récipient comportant une ouverture 103, un bord 104 de ladite ouverture formant un bourrelet 105 ;
• une pièce 108 de fermeture comportant un fond 109 de forme sensiblement complémentaire à celle de l'ouverture du récipient,
  • la pièce de fermeture comportant en outre des parois 117 latérales constituées d'un matériau déformable élastiquement, et dont un bord 118 libre est continu,
  • lesdites parois étant munies d'un relief 121 interne, ledit relief formant un moyen d'assemblage par emboîtement élastique autour du bourrelet ;
• une pièce 127 de verrouillage, apte à être insérée autour des parois latérales de la pièce de fermeture, ladite pièce étant constituée d'un matériau peu déformable élastiquement ;
  le procédé comprenant les étapes suivantes :
  • la pièce de fermeture est assemblée au récipient en verre par emboîtement élastique des parois latérales autour du bourrelet, par translation du bourrelet vers le fond de la pièce de fermeture, ledit emboîtement élastique assurant un contact étanche entre la pièce de fermeture et le bord du récipient ;
  • la pièce de verrouillage est insérée en force autour des parois latérales de la pièce de fermeture.

According to one embodiment, the invention relates to a method for assembling a packaging device for a cosmetic product, said device comprising:

• a glass container 101, said container having an opening 103, an edge 104 of said opening forming a bead 105;
• a closure piece 108 comprising a bottom 109 of a shape substantially complementary to that of the opening of the container,
  • the closure piece further comprising side walls 117 made of an elastically deformable material, and one free edge 118 of which is continuous,
  • said walls being provided with an internal relief 121, said relief forming an assembly means by elastic interlocking around the bead;
• a locking part 127, able to be inserted around the side walls of the closure part, said part being made of a material which is not very elastically deformable;
  the method comprising the following steps:
  • the closure piece is assembled to the glass container by elastic interlocking of the side walls around the bead, by translation of the bead towards the bottom of the closure part, said elastic fitting ensuring leaktight contact between the closure part and the edge of the container;
  • the locking piece is force-fitted around the side walls of the closure piece.

Claims (13)

1. Method for assembling a device (100) for packaging a cosmetic product, said device comprising:

   - a container (101) of pressed glass, said container having a main body (163) and an opening (103), an edge (104) of said opening forming a bead (105);

   - a closure piece (108) having at least one side wall (117) made of an elastically deformable material,
   said at least one side wall being provided with an internal relief (121), said relief forming a means of assembly by elastically interlocking around the bead (105);

   - a locking piece (127), adapted to be fitted around said at least one side wall of the closure piece, said locking piece comprising at least one side wall made of a material that allows little elastic deformation;

   the closure piece or the glass container having an opening providing access to the product of the packaging device,

   the method comprising the following steps:

   - the closure piece is mounted on the glass container by elastically interlocking the at least one side wall of the closure piece around the bead by moving the container relative to the closure piece in a direction of assembly, said elastic interlocking ensuring a sealing contact between the closure piece and the container;

   - the locking piece is fitted around said at least one side wall of the closure piece, wherein one and/or the other of the following is provided:

   - the edge comprises an annular body from which the bead projects, the annular body having an inner surface and an outer surface parallel to the inner surface, one and/or the other of these surfaces having a non-circular cross-section transversely to the direction of assembly;

   - the inner surface of the annular body allows the passage of a rigid volume corresponding to a homothetic transformation at a ratio of between 75% and 120% of the volume defined by the inner surface of the main body (163).
2. Method according to claim 1, further comprising one or more of the following characteristics:

   - the internal relief (121) is continuous along the entire periphery of the at least one side wall (117),

   - the locking piece is fitted around said at least one side wall of the closure piece by force-fitting the locking piece around said at least one side wall of the closure piece,

   - the locking piece is fitted around the side walls of the closure piece by force-fitting the locking piece around the side walls of the closure piece,

   - the closure piece (108) has a base (109) of a shape substantially complementary to that of the opening of the container;

   - the closure piece (108) has a base (109) and the closure piece is mounted on the glass container by moving the bead in translation towards the base of the closure piece;

   - the closure piece (108) comprises at least one side wall (117) having a free edge (118) that is continuous;

   - the closure piece (108) comprises side walls (117) having a free edge (118) that is continuous, the side walls (117) being provided with the internal relief (121), and the internal relief (121) is continuous along the entire periphery of the side walls (117), the locking piece being force-fitted around the side walls of the closure piece;

   - the closure piece (108) comprises side walls (117) of which a free edge (118) is continuous, the side walls (117) being provided with the internal relief (121), the internal relief (121) is continuous along the entire periphery of the side walls (117), the closure piece is mounted on the glass container by elastically interlocking the side walls around the bead, and optionally said elastic interlocking ensures a sealing contact between the closure piece and the edge of the container;

   - the locking piece is made of a material that allows little elastic deformation.
3. Packaging device (100) for a cosmetic product, comprising:

   - a container (101) of pressed glass, said container having a main body (163) and an opening (103), an edge (104) of said opening forming a bead (105);

   - a closure piece (108) having at least one side wall (117) made of an elastically deformable material,
   said at least one side wall (117) being provided with an internal relief (121), said relief forming a means of assembly by elastically interlocking around the bead, said elastic interlocking ensuring a sealing contact between the closure piece and the container;

   - a locking piece (127), fitted around said at least one side wall of the closure piece, said locking piece having at least one side wall made of a material that allows little elastic deformation;

   - the closure piece or the glass container having an opening providing access to the product of the packaging device, and further comprising one or more of the following characteristics:

   - the edge comprises an annular body from which the bead projects, the annular body having an inner surface and an outer surface parallel to the inner surface, one and/or the other these surfaces having a non-circular cross-section transversely to the direction of assembly;

   - the inner surface of the annular body allows the passage of a rigid volume corresponding to a homothetic transformation at a ratio of between 75% and 120% of the volume defined by the inner surface of the main body (163).
4. Packaging device according claim 3, wherein the closure piece (108) is adapted to form a sealing connection with at least two surfaces of the edge (104) of the container (101), these surfaces being selected from among an inner side surface (124), an upper surface (107), and the bead (105).
5. Packaging device according to any one of claims 3 and 4, wherein the closure piece has a face suitable for being compressed against a corner of the edge (104) of the container (101), said corner being formed between an upper surface (107) and an inner side surface (124) or the bead (105).
6. Packaging device according to one of claims 3 to 5, wherein the closure piece comprises at least one protruding element (125, 126) suitable for forming a sealing line against the edge (104) of the container (101).
7. Packaging device according to claim 3, wherein the closure piece (108) comprises a compressible or deformable gasket (123) suitable for forming a sealing connection between the edge (104) of the container (101) and the closure piece;
   and comprising one and/or the other of the following characteristics:

   - the gasket is suitable for forming a sealed connection between the closure piece and at least two surfaces of the edge of the container, these surfaces being selected from among an inner side surface (124), an upper surface (107), and the bead (105);

   - the gasket has a face suitable for being compressed against a corner of the edge of the container, formed between an upper surface (107) and an inner side surface (124) or the bead (105);

   - the gasket comprises at least one protruding element (125, 126) suitable for forming a sealing line against the edge of the container.
8. Packaging device according to any one of claims 3 to 7, wherein the bead is continuous along the entire periphery of the edge.
9. Packaging device according to any one of claims 3 to 8, wherein the opening (103) has a cylindrical shape which is not of right-circular geometry.
10. Packaging device according to any one of claims 3 to 9, wherein the closure piece (108) comprises the opening (110) providing access to the product; and optionally the locking piece (127) comprises an opening (130) communicating with the opening providing access to the product of the closure piece.
11. Packaging device according to any one of claims 3 to 10, wherein the container comprises the opening providing access to the product.
12. Packaging device according to any one of claims 3 to 11, comprising one and/or the other of the following characteristics :

    - the locking piece (127) comprises a free edge (131) in intimate contact with the container (101);

    - the locking piece (127) is permanently assembled to the container (101).
13. Device according to any one of claims 3 to 12, further comprising one or more of the following characteristics:

    - the internal relief (121) is continuous along the entire periphery of the at least one side wall (117),

    - the locking piece (127) is force-fitted around said at least one side wall of the closure piece,

    - the closure piece (108) has a base (109) of a shape substantially complementary to that of the opening of the container;

    - the closure piece (108) has a base (109) and the closure piece is mounted on the glass container by moving the bead in translation towards the base of the closure piece;

    - the closure piece (108) comprises at least one side wall (117) having a free edge (118) that is continuous;

    - the closure piece (108) comprises side walls (117) of which a free edge (118) is continuous, the side walls (117) being provided with the internal relief (121), and the internal relief (121) is continuous along the entire periphery of the side walls (117), the locking piece being force-fitted around the side walls of the closure piece;

    - the closure piece (108) comprises side walls (117) of which a free edge (118) is continuous, the side walls (117) being provided with the internal relief (121), the internal relief (121) is continuous along the entire periphery of the side walls (117), the closure piece is mounted on the glass container by elastically interlocking the side walls around the bead, and optionally said elastic interlocking ensures a sealing contact between the closure piece and the edge of the container;

    - the locking piece is made of a material that allows little elastic deformation.

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