Conditioning device with offset tightening zone, and associated assembly method

Abstract

The present invention relates to a cosmetic product packaging device (10) comprising a main body (12) and a dispensing tip (14), the main body (12) having a neck (20). The dispensing tip (14) is inserted into the neck (20), such that the packaging device (10) has a clamping zone wherein the dispensing tip (14) exerts a radial force on the neck (20). The distance between the clamping zone and a distal end (24) of the neck (20) is greater than or equal to one quarter of the inner diameter (D) of the neck (20) in the clamping zone, the dispensing tip (14) not exerting radial force on the neck (20) either between the clamping zone and the distal end (24), or on the distal end (24). The invention furthermore relates to an associated assembly method.

Description

[0001] TITLE: Conditioning device with offset tightening zone, and associated assembly method

[0002] The present invention relates to a cosmetic product packaging device comprising a main body and a dispensing tip, the main body having a neck delimiting an opening wherein the dispensing tip is arranged, the main body having a distal end, the distal end forming a free edge of the neck, the dispensing tip being inserted in the neck, such that the packaging device has a clamping zone wherein the tip exerts a radial force on the neck.

[0003] Packaging device refers to any packaging that enables the sale, transport, protection and storage of the product that it contains.

[0004] A cosmetic product is advantageously a product as defined in EC Regulation N° 1223 / 2009 of the European Parliament and the Council of November 30, 2009, relating to cosmetic products.

[0005] The product contained in the device according to the invention is, for example, a makeup product, such as a foundation, or a care cream or serum for the surface of the epidermis.

[0006] The embodiment of such a packaging device is known, wherein the main body is made of copolyester, in particular a semi-aromatic copolyester, such as polyethylene terephthalate (PET) and the tip is made of a more resilient material, for example of polyolefin, such as polyethylene (PE).

[0007] In such a device according to the prior art, the clamping zone between the tip and the main body is located at the free edge of the neck.

[0008] The clamping zone makes it possible to carry out fastening and sealing between the tip and the main body.

[0009] The more resilient material makes it possible to absorb the force in the clamping zone, which is arranged at the distal end. Thus, the force is not transmitted to the constituent material of the main body at the neck.

[0010] However, the use of a polyolefin type material for the tip makes any at least partial recycling of the packaging device more complex.

[0011] The provision of ecologically responsible, environmentally friendly solutions, the design and development of which account for environmental concerns is becoming a major concern to help meet global challenges.

[0012] It therefore proves to be essential to design more sustainable products making it possible to reduce the quantity of materials used and / or replace with more environmentally friendly materials and / or use recyclable materials in order to reduce the carbon footprint of the product.

[0013] In this context, it is important to provide recyclable packaging materials containing elements that can be separated and / or consisting of minimal materials and / or free from materials that are difficult to recycle in order to facilitate their end of life.

[0014] Thus, it proves to be necessary to develop packaging materials consisting of environmentally friendly recyclable materials to allow valorization of the packaging materials at end of life and prevent recycling process contamination.

[0015] The aim of the invention is therefore that of providing a cosmetic product packaging device, offering the option of providing better recyclability of the device, while preserving the integrity and reliability of the tight assembly between the tip and the main body.

[0016] To this end, the invention relates to as packaging device as described above, wherein the distance between the clamping zone and the distal end is greater than or equal to one quarter of the inner diameter of the neck in the clamping zone, preferably greater than or equal to one third of the inner diameter of the neck in the clamping zone, the tip not exerting radial force on the neck, either between the clamping zone and the distal end, or on the distal end.

[0017] By separating the clamping zone from the free edge, this makes it possible to limit the forces applied to the neck in the vicinity of the free edge, which is a relatively fragile zone. The minimum distance provided between the clamping zone and the free edge is particularly relevant as to the separation of the forces away from the fragile zone, accounting for the curvature of the neck.

[0018] Thus, this offers, for example, the option of using the same material, for example PET, for the main body and the tip. Using the same material facilitates recycling. However, by using the same material, the material of the tip no longer has additional resilience, with respect to the neck, such that it no longer absorbs the clamping force existing between the tip and the main body to ensure a reliable and tight assembly of these elements, the radial force then being transmitted to the neck. With the clamping zone located at the free edge of the main body, this is liable to induce a flaring of the free edge, possibly resulting in the appearance of crack(s). Such a flaring, or cracking, phenomenon of the neck of the main body is moreover all the more likely to occur if the cosmetic product contained inside the main body and intended to be dispensed through the tip contains alcohol or a branched higher alkane, such as isododecane. Thus, by providing a clamping zone at the provided distance from the free edge, the radial clamping forces are exerted on the neck at a distance from the relatively fragile zone, said relatively fragile zone being located in the vicinity of the free edge, which substantially reduces the risk of flaring, and thus of cracking, including when the tip and the main body are made of the same material, for example of PET, which is a particularly readily recyclable material worldwide.

[0019] In the case where the inner diameter of the neck is not constant in the axial portion wherein the clamping zone extends, the distance between the clamping zone and the distal end is greater than or equal to one quarter of the minimum inner diameter in the clamping zone, preferably greater than or equal to one third of the minimum inner diameter in the clamping zone.

[0020] According to further advantageous aspects of the invention, the packaging device comprises one or several of the following features taken in isolation or in any technically possible combination:

[0021] - the main body and the dispensing tip are made of the same material, more particularly of polyethylene terephthalate (PET);

[0022] The recyclability of the packaging device per se is thus improved. Indeed, as the tip and the main body are made of the same material, these two constituent elements of the packaging device may be placed in the recycling line, in particular without requiring prior disassembly operations. PET is furthermore a readily and widely recyclable material. Moreover, PET offers a Young's modulus greater than 1 .5 GPa, is transparent and is strong enough to form a main body containing the cosmetic product, which holds its shape with a conventional thickness (except in the case of deformable portions specifically designed to be deformed). Furthermore, using PET to form the main body and the tip is particularly advantageous in that the material has a good compatibility with a wide range of cosmetic products provided to be contained inside the main body and intended to be dispensed through the tip.

[0023] - the neck has a thickness in the clamping zone, the distance between the clamping zone and the distal end being greater than or equal to twice the thickness of the neck in the clamping zone;

[0024] Such a distance is, likewise, adapted to reduce the radial forces applied on the relatively fragile zone located in the vicinity of the free edge of the neck.

[0025] - the dispensing tip and the neck have no radial contact between the clamping zone and the distal end and at the distal end;

[0026] Thus, in the absence of radial contact, the dispensing tip does not apply radial force on the neck between the clamping zone and the free edge, or at the free edge.

[0027] - the dispensing tip has a circumferential relief on an outer surface at the clamping zone and / or the neck has a circumferential relief on an inner surface at the clamping zone;

[0028] The circumferential relief allows the placing of a radial clamping force by forced insertion between the tip and the main body. - the dispensing tip has a circumferential relief on an outer surface, the circumferential relief cooperating with a clamping portion of an inner surface of the neck in the clamping zone, such that the circumferential relief presses against said inner surface clamping portion;

[0029] The circumferential relief against the clamping portion allows the placing of a radial clamping force by forced insertion of the tip in the opening, and furthermore, in this case, sealing.

[0030] - the inner surface of the neck has a snap-fitting relief between the distal end and the clamping portion, the inner diameter of the neck at the snap-fitting relief being strictly less than the outer diameter of the dispensing tip at the circumferential relief;

[0031] This makes it possible for the tip to be snap-fitted in the neck, i.e. the snap-fitting relief forms an axial stop preventing unintentional disengagement of the tip of the main body.

[0032] - the main body has a shoulder, the neck extending between the shoulder and the distal end, the distance between the clamping zone and the distal end is greater than or equal to one third of the longitudinal distance between the shoulder and the distal end.

[0033] Such a distance is, likewise, adapted to reduce the radial forces applied on the relatively fragile zone located in the vicinity of the free edge of the neck.

[0034] The invention further relates to a method for assembling a packaging device as described above, comprising the following steps:

[0035] - proving a main body, the main body having a neck delimiting an opening, the main body having a distal end, the distal end forming a free edge of the neck,

[0036] - providing a dispensing tip, and

[0037] - forced insertion of the dispensing tip into the neck, such that the dispensing tip is arranged in the opening and until the dispensing tip and the main body cooperate in a clamping zone wherein the dispensing tip exerts a radial force on the neck, wherein the distance between the clamping zone and the distal end is greater than or equal to one quarter of the inner diameter of the neck in the clamping zone, preferably greater than or equal to one third of the inner diameter of the neck in the clamping zone, the dispensing tip not exerting radial force on the neck either between the clamping zone and the distal end, or on the distal end.

[0038] This assembly method may furthermore have the following feature:

[0039] - during the insertion of the dispensing tip into the neck, the circumferential relief projects above the snap-fitting relief, such that after insertion, the snap-fitting relief extends between the circumferential relief and the distal end.

[0040] The invention will become more apparent upon reading the following description, given solely as a non-limiting example, and made with reference to the drawings wherein: [Fig 1] Figure 1 is a partial sectional view of a packaging device according to an embodiment example of the invention,

[0041] [Fig 2] Figure 2 is an enlarged view of box A in Figure 1 , and

[0042] [Fig 3] Figure 3 is a partial sectional view of a packaging device according to a second embodiment example of the invention.

[0043] An example of a cosmetic product packaging device 10 according to the invention is, partially, represented in Figures 1 and 2.

[0044] The packaging device 10 comprises a main body 12 and a dispensing tip 14.

[0045] The main body 12 is adapted to contain the cosmetic product.

[0046] The main body 12 delimits a volume 16 for receiving the cosmetic product.

[0047] The main body 12 comprises a lateral wall 18 at least partially delimiting the reception volume 16.

[0048] The main body 12 extends here mainly along a main axis X.

[0049] The lateral wall 18 has, for example, a rotational symmetry about the main axis X.

[0050] Alternatively, the lateral wall 18 extends about the main axis X, each section of the lateral wall perpendicularly to the main axis X having a shape. The shape is, for example, an oval, a square or any polygon.

[0051] The main body 12 has a neck 20 delimiting an opening 22.

[0052] The opening 22 forms an outlet for the cosmetic product contained in the main body 12, more particularly in the reception volume 16.

[0053] The main body 12 has a distal end 24, more particularly here along the main axis X.

[0054] The distal end 24 forms a free end of the neck 20.

[0055] The neck 20 has an inner surface 26, and here an outer surface 28.

[0056] The inner surface 26 and the outer surface 28 are here delimited by the same wall, here surrounding the main axis X.

[0057] The neck 20 extends about the main axis X.

[0058] The opening 22 extends along the main axis X.

[0059] More particularly, the neck 20 has a rotational symmetry about the main axis X.

[0060] The neck 20 has here an inner diameter, defined at the inner surface 26, for any plane perpendicular to the main axis X passing through the distal end 24.

[0061] The inner surface 26 of the neck 20 has a clamping portion 30.

[0062] The clamping portion 30 is adapted such that, when the tip 14 is inserted into the neck 20, then the tip 14 exerts a radial force on the clamping portion 30.

[0063] More particularly, the opening 22 has a reduced passage cross-section at the clamping portion 30 with respect to the passage cross-section between the distal end 24 and the clamping portion 30 (excluded), except for any snap-fitting relief, as described hereinafter, where applicable.

[0064] More particularly here, the neck 20 has here an inner diameter, defined at the inner surface 26, measured at any point of the clamping portion 30 strictly less than the inner diameter of the neck 20 between the distal end 24 and the clamping portion 30 (excluded), except for any snap-fitting relief, as describe hereinafter, where applicable.

[0065] The clamping portion 30 of the neck 20 has here a circumferential relief.

[0066] The inner surface 26 of the neck 20 has here, furthermore, a snap-fitting relief 32 between the distal end 24 and the clamping portion 30.

[0067] More particularly, the opening 22 has a reduced passage cross-section at the snapfitting relief 32 with respect to the passage cross-section at the clamping portion 30.

[0068] More particularly here, the neck 20 has here an inner diameter measured at any point of the snap-fitting relief 32 strictly less than the inner diameter of the neck 20 in the clamping portion 30.

[0069] The snap-fitting relief 32 extends along a circumference of the inner surface 26 of the neck 20.

[0070] The snap-fitting relief 32 is, for example, a relief extending along the entire circumference.

[0071] Alternatively, the snap-fitting relief 32 comprises a plurality of reliefs distributed along the entire circumference.

[0072] The snap-fitting relief 32 here has a shape to allow the passage of a relief, here the circumferential relief 44 described hereinafter, from the distal end to the clamping zone 30 and to lock said relief in the opposite direction.

[0073] The snap-fitting relief 32 has two edges arranged on either side along the direction of the main axis.

[0074] The snap-fitting relief 32 has, for example, a height increasing more gradually along its edge nearest the distal end 24 than its other edge.

[0075] The snap-fitting relief 32 is, for example, here adjacent to the clamping portion 30.

[0076] Here, the inner diameter of the neck 20 decreases from the clamping portion 30 to the snap-fitting relief 32, then increases to one or more values strictly greater than the inner diameter of the neck in the clamping portion 30.

[0077] Alternatively, the snap-fitting relief 32 extends at any other location between the clamping portion 30 and the distal end 24.

[0078] In an alternative embodiment, the inner diameter of the neck 20 at the clamping portion 30 is, for example, substantially equal to the inner diameter of the neck 20 in a zone between the clamping portion (excluded) and the distal end 24, more particularly between the snap-fitting relief 32 (excluded) and the distal end 24.

[0079] In the example shown, the main body 12 has a shoulder 34, the neck 20 extending between the shoulder 34 and the distal end 24.

[0080] Alternatively, the neck 20 extends from the main body 12, the neck 20 being aligned with the lateral wall 18 along the main axis X.

[0081] The neck 20 has a thickness e in the clamping portion 30.

[0082] The thickness e corresponds to the distance between the inner surface 26 and the outer surface 28 of the neck 20 in the clamping portion 30.

[0083] If said distance is variable in the clamping portion 30, the thickness e is equal to the mean distance between the inner surface 26 and the outer surface 28 of the neck 20 in the clamping portion 30.

[0084] The thickness e is considered excluding any assembly thread to a cap, where applicable.

[0085] The inner diameter D of the neck 20 in the clamping portion 30 is furthermore defined.

[0086] If the inner diameter of the neck varies in the clamping portion 30, then the inner diameter D corresponds to the minimum inner diameter in the clamping portion 30.

[0087] The dispensing tip 14 is arranged in the opening 22 delimited by the neck 20.

[0088] The dispensing tip 14 has here a through passage 36, to allow the discharge of the cosmetic product.

[0089] More particularly, the tip 14 blocks the opening 22 except for the passage 36.

[0090] The tip 14 comprises here a cooperation portion 38 adapted to be inserted into the opening 22 to allow holding of the tip 14 in the neck 20 of the main body 12.

[0091] The tip 14, more particularly the cooperation portion 38, has a geometry adapted to cooperate with the opening 22.

[0092] The tip 14 has, for example, a rotational symmetry about an axis, merged here with the main axis X when the tip 14 is inserted into the main body 12.

[0093] The dispensing tip 14 is made of the same material as the main body 12, more particularly here of polyethylene terephthalate (PET).

[0094] The dispensing tip 14 has an outer surface 40, and here furthermore an inner surface 42.

[0095] The inner surface 42 delimits the passage 36.

[0096] The outer surface 40 and the inner surface 42 are delimited by the same wall.

[0097] The outer surface 40 extends partially facing the inner surface 26 of the neck 20. More particularly, in the cooperation portion 38, the outer surface 40 extends facing the inner surface 26 of the neck 20. The dispensing tip 14 has a circumferential relief 44 on the outer surface 40.

[0098] The circumferential relief 44 is arranged such that and provided such that, when the tip 14 is inserted into the neck 20, the circumferential relief 44 cooperates with the clamping portion 30.

[0099] The outer diameter of the dispensing tip 14, defined at the outer surface 40, measured at the circumferential relief is strictly greater than the inner diameter of the neck 20 at the circumferential relief by a clamping distance, for example between 0.05 mm and 0.15 mm, and in particular 0.1 mm.

[0100] The outer diameter of the dispensing tip 14, defined at the outer surface 40, measured at the circumferential relief is strictly greater than the inner diameter of the neck 20 at the snap-fitting relief 32, where applicable, for example by a distance between 0.17 mm and 0.27 mm, and in particular 0.22 mm.

[0101] The dispensing tip 14 is inserted into the neck 20, such that the packaging device 10 has a clamping zone 46 wherein the tip 14 exerts a radial force on the neck 20, more particularly along the entire periphery of the neck 20.

[0102] The clamping zone 46 allows here sealing between the tip 14 and the main body 12 when the tip 14 is inserted into the neck 20.

[0103] In the clamping zone 46, the outer surface 40 of the dispensing tip 14 cooperates with the inner surface 26 of the neck 20, such that the dispensing tip 14 exerts a radial force against the neck 20.

[0104] The radial force allows here the sealing between the dispensing tip 14 and the main body 12.

[0105] The clamping zone 46 comprises here, more particularly is formed from, the circumferential relief 44, and furthermore the clamping portion 30.

[0106] The distance d between the clamping zone 46 and the distal end 24 is greater than or equal to one quarter of the inner diameter D of the neck 20 in the clamping zone 46, corresponding to the inner diameter D of the neck in the clamping portion 30, more particularly greater than or equal to one third of the inner diameter D in the clamping zone 46.

[0107] The distance d is measured along an axial direction, corresponding here to the direction of the main axis X between the distal end 24 of the neck 20 and an axial end of the clamping zone 46 located nearest the distal end 24. In other words, the distance d corresponds to the minimum axial distance, measured along the main axis, separating the clamping zone 46 from the distal end 24 of the neck 20. The circumferential relief 44 cooperates with the clamping portion 30 in the clamping zone 46, such that the circumferential relief 44 presses against said clamping portion 30, more particularly radially.

[0108] The tip 14 does not exert radial force on the neck 20 between the clamping zone 46 and the distal end 24 or on the distal end 24.

[0109] The tip 14 does not exert force on the neck 20 between the clamping zone 46 and the distal end 24, excluding the clamping zone and the distal end.

[0110] More particularly here, the dispensing tip 14 and the neck 20 have no radial contact between the clamping zone 46 and the distal end 24, excluding the clamping zone, or on the distal end 24.

[0111] More particularly here, the dispensing tip 14 and the neck 20 have no contact between the clamping zone 46 and the distal end 24, excluding the clamping zone and the distal end.

[0112] More particularly here, the dispensing tip 14 bear purely axially on the distal end 24 of the neck 20 via a front bearing surface 15 provided for example by a bearing collar. Preferably, the front bearing surface 15 of the dispensing tip 14 exerts a purely axial force on the distal end 24 of the neck 20 when the dispensing tip 14 is fastened on the neck 20 of the main body 12, such that in particular the tip is tensioned in its axial portion extending between the front bearing surface 15 and the circumferential relief 44.

[0113] The inner diameter of the neck 20 at the inner surface 26, at any point between the clamping zone and the distal end outside the clamping zone, is here strictly greater than the outer diameter of the outer surface 40 of the tip 14 facing said point, when the tip 14 is inserted into the neck 20.

[0114] Here, the distance d between the clamping zone 46 and the distal end 24 is, for example, furthermore, greater than or equal to twice the thickness e of the neck in the clamping zone 46, corresponding to the thickness e of the neck in the clamping portion 30.

[0115] Here, the distance d between the clamping zone 46 and the distal end 24 is, for example, furthermore, greater than or equal to one third of the longitudinal distance, along the axial direction, between the shoulder 34 and the distal end 24.

[0116] The packaging device further comprises a cap 48.

[0117] The cap 48 is here capable of being snap-fitted directly on the neck 20.

[0118] A method for assembling a packaging device 10 according to the invention will now be described.

[0119] The assembly method comprises the following steps:

[0120] - providing a main body 12 such as described hereinabove,

[0121] - providing a dispensing tip 14 as described hereinabove, and - forced insertion of the dispensing tip 14 into the neck 20, for example with a translation movement along the main axis X.

[0122] Insertion is carried out, such that the dispensing tip 14 is inserted into the opening and until the dispensing tip 14 and the main body 12 cooperate in the clamping zone 46, more particularly tightly.

[0123] More particularly, insertion is carried out until the circumferential relief 44 and the clamping portion 30 cooperate.

[0124] After insertion, the dispensing tip 14 does not exert radial force on the neck 20 between the clamping zone 46 (excluded) and the distal end 24. More particularly here, the dispensing tip does not exert radial force on the neck 20 outside the clamping zone 46.

[0125] In the example shown, during the insertion of the dispensing tip 14 into the neck 20, the circumferential relief 44 projects above the snap-fitting relief 32, such that after insertion, the snap-fitting relief 32 extends between the circumferential relief 44 and the distal end 24.

[0126] The snap-fitting relief 32 here prevents a disengagement of the tip 14 and the main body 12, in addition to the radial clamping existing between these two elements in the clamping zone 46.

[0127] The snap-fitting relief 32 extends here adjacent to the circumferential relief 44, such that the circumferential relief 44 is in axial abutment against the snap-fitting relief 32.

[0128] The passage of the snap-fitting relief 32 indicates here that the tip 14 is inserted until the outer surface 40 of the dispensing tip 14 cooperates with the inner surface 26 of the neck 20 in the clamping zone 46.

[0129] In an alternative embodiment not shown, the tip does not have a circumferential relief on its outer surface at the clamping zone, the neck comprising a circumferential relief on its inner surface at the clamping zone, such that the outer surface of the dispensing tip cooperates with the inner surface of the neck in the clamping zone, and that the dispensing tip exerts a radial force against the neck.

[0130] In an embodiment not shown, the snap-fitting is carried out differently, for example using at least one deformable lug.

[0131] Alternatively, the packaging device has no snap-fitting system.

[0132] A second example of a packaging device is shown in Figure 3.

[0133] Only the points whereby this second example differs from the first example will now be described.

[0134] The packaging device 110 comprises here, similarly to the first example, a main body 112, a tip 114, and furthermore here a cap 148.

[0135] The cap 148 is here capable of being screwed on the neck 120 of the main body 112, and not snap-fitted. The neck 120 has, for example, on its outer wall an external thread 150, complementary with an internal thread of the cap 148.

[0136] In the cosmetic product packaging device according to the invention, the clamping zone is at a distance from the free edge, such that the forces applied to the neck in the vicinity of the free edge are limited.

[0137] Thus, this limits the risk of flaring of the free edge, or of crack(s), including for a packaging device made of a single material, more particularly of PET.

Claims

CLAIMS1. Cosmetic product packaging device (10; 110) comprising a main body (12; 112) and a dispensing tip (14; 114), the main body (12; 112) having a neck (20; 120) delimiting an opening (22) wherein the dispensing tip (14; 114) is arranged, the main body (12; 112) having a distal end (24), the distal end (24) forming a free edge of the neck (20; 120), the dispensing tip (14; 114) being inserted into the neck (20; 120), such that the packaging device (10; 110) has a clamping zone (46) wherein the dispensing tip (14; 114) exerts a radial force on the neck (20; 120), wherein the distance (d) between the clamping zone (46) and the distal end (24) is greater than or equal to one quarter of the inner diameter (D) of the neck (20; 120) in the clamping zone (46), preferably greater than or equal to one third of the inner diameter (D) of the neck (20; 120) in the clamping zone (46), the dispensing tip (14; 114) not exerting radial force on the neck (20; 120) either between the clamping zone (46) and the distal end (24), or on the distal end (24).

2. Packaging device according to claim 1 , wherein the main body (12; 112) and the dispensing tip (14; 114) are made of the same material, more particularly of polyethylene terephthalate (PET).

3. Packaging device according to claim 1 or 2, wherein the neck (20; 120) has a thickness (e) in the clamping zone (46), the distance (d) between the clamping zone (46) and the distal end (24) being greater than or equal to twice the thickness (e) of the neck (20; 120) in the clamping zone (46).

4. Packaging device according to any one of claims 1 to 3, wherein the dispensing tip (14; 114) and the neck (20; 120) have no radial contact between the clamping zone (46) and the distal end (24) and at the distal end (24).

5. Packaging device according to any one of claims 1 to 4, wherein the dispensing tip (14; 114) has a circumferential relief (44) on an outer surface (40) at the clamping zone (46) and / or the neck (20; 120) has a circumferential relief on an inner surface (26) at the clamping zone (46).

6. Packaging device according to any one of claims 1 to 4, wherein the dispensing tip (14; 114) has a circumferential relief (44) on an outer surface (40), the circumferential relief (44) cooperating with a clamping portion (30) of an inner surface (26) of the neck (20; 120) in the clamping zone (46), such that the circumferential relief (44) presses against said clamping portion (30) of the inner surface (26).

7. Packaging device according to claim 6, wherein the inner surface (26) of the neck (20; 120) has a snap-fitting relief (32) between the distal end (24) and the clamping portion (30), the inner diameter of the neck (20; 120) at the snap-fitting relief (32) beingstrictly less than the outer diameter (14; 114) of the dispensing tip at the circumferential relief (44).

8. Packaging device according to any one of claims 1 to 7, wherein the main body (12; 112) has a shoulder (34), the neck (20; 120) extending between the shoulder (34) and the distal end (24), the distance (d) between the clamping zone (46) and the distal end (24) is greater than or equal to one third of the longitudinal distance between the shoulder (34) and the distal end (24).

9. Method for assembling a packaging device (10; 110) according to any one of claims 1 to 8, comprising the following steps:- proving a main body (12; 112), the main body (12; 112) having a neck (20; 120) delimiting an opening (22), the main body (12; 112) having a distal end (24), the distal end (24) forming a free edge of the neck (20; 120),- providing a dispensing tip (14; 114), and- forced insertion of the dispensing tip (14; 114) into the neck (20; 120), such that the dispensing tip (14; 114) is arranged in the opening (22) and until the dispensing tip (14; 114) and the main body (12; 112) cooperate in a clamping zone (46) wherein the dispensing tip (14; 114) exerts a radial force on the neck (20; 120), wherein the distance (d) between the clamping zone (46) and the distal end (24) is greater than or equal to one quarter of the inner diameter (D) of the neck (20; 120) in the clamping zone (46), preferably greater than or equal to one third of the inner diameter (D) of the neck (20; 120) in the clamping zone, the dispensing tip (14; 114) not exerting radial force on the neck (20; 120) either between the clamping (46) zone and the distal end (24), or on the distal end (24).

10. Assembly method according to claim 9, of a packaging device (10; 110) according to claim 5, wherein, during the insertion of the dispensing tip (14; 114) into the neck (20; 120), the circumferential relief (44) projects above the snap-fitting relief (32), such that after insertion, the snap-fitting relief (32) extends between the circumferential relief (44) and the distal end (24).

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