Adjusting device with offset tightening region and associated assembly method

Abstract

The invention relates to a cosmetic packaging device (10) comprising a body (12) having a neck (20) and a dispensing tip (14). The dispensing tip (14) is inserted into the neck (20) so that the packaging device (10) has a clamping region in which the dispensing tip (14) exerts a radial force on the neck (20). The distance between the clamping region and the distal end (24) of the neck (20) is greater than or equal to a quarter of the internal diameter (D) of the neck (20) in the clamping region, the dispensing tip (14) not exerting a radial force on the neck (20) between the clamping region and the distal end (24) or on the distal end (24). The invention also relates to an associated assembly method.

Description

Technical Field

[0001] The present invention relates to a cosmetic packaging device comprising a body and a dispensing tip, the body having a neck defining an opening, the dispensing tip being disposed in the opening, the body having a distal end forming a free edge of the neck, the dispensing tip being inserted into the neck such that the packaging device has a clamping region in which the tip applies a radial force to the neck. Background Technology

[0002] Packaging equipment refers to any packaging that enables the sale, transport, protection, and storage of the products it contains.

[0003] Advantageously, cosmetics are products defined in the European Union Regulation No. 1223 / 2009 concerning cosmetics, issued by the European Parliament and the Commission on 30 November 2009.

[0004] Products included in the device according to the invention are, for example, cosmetics (such as foundation), or care creams or serums for the surface of the skin.

[0005] Examples of such packaging devices are known, wherein the body is made of copolyester, particularly semi-aromatic copolyester (e.g., polyethylene terephthalate (PET)), and the tip is made of a more flexible material, such as polyolefin (e.g., polyethylene (PE)).

[0006] In this device according to the prior art, the clamping area between the tip and the body is located at the free edge of the neck.

[0007] The clamping area allows for fastening and sealing between the tip and the body.

[0008] The more flexible material allows it to absorb forces in the clamping area located at the distal end. Therefore, the force is not transmitted to the material at the neck of the body.

[0009] However, the use of polyolefin-based materials for cutting-edge applications makes the recycling of at least any part of the packaging unit more complicated.

[0010] Providing ecologically responsible and environmentally friendly solutions, whose design and development take environmental issues into account, is becoming a major focus in helping to address global challenges.

[0011] Therefore, in order to reduce the carbon footprint of products, more sustainable products must be designed, which enables the reduction of the amount of materials used and / or the replacement and / or use of recyclable materials with more environmentally friendly materials.

[0012] In this context, it is important to provide recyclable packaging materials that contain separable components and / or consist of minimal and / or no non-recyclable materials to facilitate the end of their lifespan.

[0013] Therefore, it is necessary to develop packaging materials composed of environmentally friendly and recyclable materials so that the packaging materials can be valued at the end of their service life and prevent pollution during the recycling process. Summary of the Invention

[0014] Therefore, the object of the present invention is to provide a cosmetic packaging device that offers the option of improving the recyclability of the device while maintaining the integrity and reliability of the tight assembly between the tip and the body.

[0015] Therefore, the present invention relates to a packaging device as described above, wherein the distance between the clamping area and the distal end is greater than or equal to one-quarter of the inner diameter of the neck in the clamping area, preferably greater than or equal to one-third of the inner diameter of the neck in the clamping area, and the tip does not exert a radial force on the neck, whether between the clamping area and the distal end or on the distal end.

[0016] Separating the clamping region from the free edge allows for the limitation of forces applied to the neck near the free edge, which is a relatively vulnerable area. Given the curvature of the neck, the minimum distance provided between the clamping region and the free edge is particularly relevant for the separation of forces away from the vulnerable area.

[0017] Therefore, this provides the option of using the same material (e.g., PET) for both the body and the tip. Using the same material facilitates recycling. However, by using the same material, the tip material no longer has the additional elasticity relative to the neck, so the tip no longer absorbs the clamping force between the tip and the body to ensure reliable and tight assembly of these components, and then radial forces are transmitted to the neck. Since the clamping area is located at the free edge of the body, this can easily cause flaring at the free edge, which can lead to cracking. Furthermore, this flaring or cracking of the neck of the body is more likely to occur if the cosmetic contained within the body and intended for dispensing via the tip contains alcohols or branched higher alkanes, such as isododecane. Therefore, by providing a clamping area at a distance from the free edge, radial clamping forces are applied to the neck at a distance from a relatively vulnerable area located near the free edge, which essentially reduces the risk of flaring, and thus the risk of cracking, including when the tip and body are made of the same material, such as PET, which is a material that is particularly easy to recycle worldwide.

[0018] When the inner diameter of the neck is not constant within the axial portion extending from the clamping area, the distance between the clamping area and the distal end is greater than or equal to one-quarter of the minimum inner diameter in the clamping area, preferably greater than or equal to one-third of the minimum inner diameter in the clamping area.

[0019] According to other advantageous aspects of the invention, the packaging device includes one or more of the following features, which are employed individually or in any technically possible combination: - The body and the dispensing tip are made of the same material, more specifically polyethylene terephthalate (PET); Therefore, the recyclability of the packaging device itself is improved. In fact, since the tip and body are made of the same material, these two components of the packaging device can be arranged in a recycling line without requiring prior disassembly. Furthermore, PET is a material that is readily and widely recyclable. In addition, PET offers a Young's modulus greater than 1.5 GPa, is transparent, and strong enough to form a body that holds the cosmetic within a standard thickness (except in the case of deformable portions specifically designed to deform). Moreover, using PET to form both the body and the tip is particularly advantageous because the material has good compatibility with a wide variety of cosmetics that are configured to be contained within the body and intended for dispensing via the tip.

[0020] - The neck has a thickness in the clamping region, and the distance between the clamping region and the distal end is greater than or equal to twice the thickness of the neck in the clamping region; Such a distance is also suitable for reducing the radial force applied to the relatively vulnerable area of ​​the neck near the free edge.

[0021] - The dispensing tip and neck have no radial contact between the clamping area and the distal end, and at the distal end; Therefore, in the absence of radial contact, the dispensing tip does not apply radial force to the neck between the clamping area and the free edge or at the free edge.

[0022] - The dispensing tip has a circumferential protrusion on the outer surface of the clamping area, and / or the neck has a circumferential protrusion on the inner surface of the clamping area; The circumferential protrusions enable the application of radial clamping force through forced insertion between the tip and the body.

[0023] - The dispensing tip has a circumferential protrusion on its outer surface, which engages with a clamping portion of the neck on the inner surface of the clamping area, such that the circumferential protrusion presses against the clamping portion of the inner surface. The circumferential protrusion of the clamping portion allows for the application of radial clamping force by forcibly inserting the tip into the opening, and in this case, a seal can also be achieved.

[0024] - The inner surface of the neck has a snap-fit ​​protrusion between the distal end and the clamping portion, and the inner diameter of the neck at the snap-fit ​​protrusion is strictly smaller than the outer diameter of the dispensing tip at the circumferential protrusion. This allows the tip to snap into the neck, meaning the snap-fit ​​tip forms an axial stop to prevent the tip from unintentionally detaching from the body.

[0025] - The main body has a shoulder, and the neck extends between the shoulder and the distal end. The distance between the clamping area and the distal end is greater than or equal to one-third of the longitudinal distance between the shoulder and the distal end.

[0026] Such a distance is also suitable for reducing the radial force applied to the relatively vulnerable area of ​​the neck near the free edge.

[0027] The present invention also relates to a method for assembling the packaging device as described above, the method comprising the following steps: - Provide a body having a neck that defines an opening, and a distal end that forms a free edge of the neck. - Provides a dispensing tip, and - The dispensing tip is forcibly inserted into the neck such that the dispensing tip is positioned in the opening until the dispensing tip engages with the body in a clamping region in which the dispensing tip applies a radial force to the neck, wherein the distance between the clamping region and the distal end is greater than or equal to one-quarter of the inner diameter of the neck in the clamping region, preferably greater than or equal to one-third of the inner diameter of the neck in the clamping region, and the dispensing tip does not apply a radial force to the neck between the clamping region and the distal end or on the distal end.

[0028] This assembly method may also have the following characteristics: - During insertion of the dispensing tip into the neck, the circumferential protrusion protrudes above the snap-fit ​​protrusion, such that after insertion, the snap-fit ​​protrusion extends between the circumferential protrusion and the distal end. Attached Figure Description

[0029] The invention will become more apparent from the following description, given only as a non-limiting example and with reference to the accompanying drawings, in which: [ Figure 1 ] Figure 1 This is a partial cross-sectional view of a packaging apparatus according to an embodiment of the present invention. [ Figure 2 ] Figure 2 for Figure 1 An enlarged view of box A, and [ Figure 3 ] Figure 3 This is a partial cross-sectional view of a packaging apparatus according to a second embodiment of the present invention. Detailed Implementation

[0030] An example of the cosmetic packaging device 10 according to the present invention is shown in part. Figure 1 and Figure 2 middle.

[0031] The packaging device 10 includes a main body 12 and a dispensing tip 14.

[0032] The main body 12 is suitable for containing cosmetics.

[0033] The main body 12 defines the volume 16 for receiving cosmetics.

[0034] The main body 12 includes a sidewall 18 that at least partially defines the receiving volume 16.

[0035] The main body 12 extends primarily along the main axis X.

[0036] The sidewall 18 has, for example, rotational symmetry about the principal axis X.

[0037] Alternatively, the sidewall 18 extends around the main axis X, and each segment of the sidewall perpendicular to the main axis X has a shape. This shape may be, for example, an ellipse, a square, or any polygon.

[0038] The main body 12 has a neck 20 that defines the opening 22.

[0039] The opening 22 forms an outlet for the cosmetics contained in the main body 12, and more specifically in the receiving volume 16.

[0040] The main body 12 has a distal end 24, which, more specifically, has a distal end 24 along the main axis X.

[0041] The distal end 24 forms the free end of the neck 20.

[0042] The neck 20 has an inner surface 26 and an outer surface 28 thereon.

[0043] The inner surface 26 and the outer surface 28 are defined by the same wall that surrounds the main axis X.

[0044] The neck 20 extends around the main axis X.

[0045] Opening 22 extends along the main axis X.

[0046] More specifically, the neck 20 has rotational symmetry about the principal axis X.

[0047] For any plane perpendicular to the principal axis X passing through the distal end 24, the neck 20 here has an inner diameter defined at the inner surface 26.

[0048] The inner surface 26 of the neck 20 has a clamping portion 30.

[0049] The clamping portion 30 is adapted such that when the tip 14 is inserted into the neck 20, the tip 14 applies a radial force to the clamping portion 30.

[0050] More specifically, where applicable, in addition to any snap-fit ​​protrusions as described below, the opening 22 at the clamping portion 30 has a reduced channel cross-section relative to the channel cross-section between the distal end 24 and the clamping portion 30 (excluding the clamping portion 30).

[0051] More specifically, where applicable, in addition to any snap-fit ​​protrusions as described below, the neck 20 here has an inner diameter defined at the inner surface 26, which, when measured at any point on the clamping portion 30, is strictly smaller than the inner diameter of the neck 20 between the distal end 24 and the clamping portion 30 (excluding it).

[0052] The clamping portion 30 of the neck 20 has a circumferential protrusion.

[0053] In addition, the inner surface 26 of the neck 20 has a snap-fit ​​protrusion 32 between the distal end 24 and the clamping portion 30.

[0054] More specifically, the cross-sectional area of ​​the channel at the snap-fit ​​protrusion 32 of the opening 22 is smaller than the cross-sectional area of ​​the channel at the clamping portion 30.

[0055] More specifically here, the neck 20 has an inner diameter measured at any point on the snap-fit ​​protrusion 32, which is strictly smaller than the inner diameter of the neck 20 in the clamping portion 30.

[0056] The snap-fit ​​protrusion 32 extends along the circumference of the inner surface 26 of the neck 20.

[0057] The snap-fit ​​protrusion 32 is, for example, a protrusion that extends along the entire circumference.

[0058] Alternatively, the snap-fit ​​protrusion 32 includes a plurality of protrusions distributed along the entire circumference.

[0059] The shape of the snap-fit ​​protrusion 32 allows the protrusion (here described as the circumferential protrusion 44) to pass from the distal end to the clamping area 30 and lock the protrusion in the opposite direction.

[0060] The snap-fit ​​protrusion 32 has two edges arranged along the main axis on both sides.

[0061] The snap-fit ​​protrusion 32, for example, has a height that gradually increases along its edge closest to the distal end 24 than along its other edge.

[0062] The snap-fit ​​protrusion 32 is, for example, adjacent to the clamping portion 30.

[0063] Here, the inner diameter of the neck 20 decreases from the clamping portion 30 to the snap-fit ​​protrusion 32, and then increases to be strictly greater than one or more values ​​of the inner diameter of the neck in the clamping portion 30.

[0064] Alternatively, the snap-fit ​​protrusion 32 extends at any other location between the clamping portion 30 and the distal end 24.

[0065] In an alternative embodiment, the inner diameter of the neck 20 at the clamping portion 30 is substantially equal to the inner diameter of the neck 20 in the region between the clamping portion (excluding) and the distal end 24, and more specifically in the region between the snap-fit ​​protrusion 32 (excluding) and the distal end 24.

[0066] In the example shown, the body 12 has a shoulder 34 and a neck 20 extending between the shoulder 34 and the distal end 24.

[0067] Alternatively, the neck 20 extends from the body 12 and is aligned with the sidewall 18 along the main axis X.

[0068] The neck 20 has a thickness e in the clamping portion 30.

[0069] 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.

[0070] If the distance is variable in the clamping portion 30, then the thickness e is equal to the average distance between the inner surface 26 and the outer surface 28 of the neck 20 in the clamping portion 30.

[0071] If applicable, thickness e is considered to exclude any assembly threads of the cap.

[0072] In addition, the inner diameter D of the neck 20 in the clamping portion 30 is also defined.

[0073] If the inner diameter of the neck varies in the clamping portion 30, then the inner diameter D corresponds to the smallest inner diameter in the clamping portion 30.

[0074] The dispensing tip 14 is arranged in the opening 22 defined by the neck 20.

[0075] The dispensing tip 14 has a through channel 36 to allow the cosmetic to be dispensed.

[0076] More specifically, tip 14 blocks opening 22 in addition to channel 36.

[0077] The tip 14 here includes a mating portion 38, which is adapted to be inserted into the opening 22 so that the tip 14 can be held in the neck 20 of the body 12.

[0078] The tip 14, more specifically the mating portion 38, has a geometry adapted to mate with the opening 22.

[0079] Tip 14 has, for example, rotational symmetry about an axis that merges with the main axis X when tip 14 is inserted into body 12.

[0080] The dispensing tip 14 is made of the same material as the body 12, more specifically of polyethylene terephthalate (PET).

[0081] The dispensing tip 14 has an outer surface 40 and also an inner surface 42.

[0082] The inner surface 42 defines the channel 36.

[0083] The outer surface 40 and the inner surface 42 are defined by the same wall.

[0084] The outer surface 40 extends partially toward the inner surface 26 of the neck 20. More specifically, in the mating portion 38, the outer surface 40 extends toward the inner surface 26 of the neck 20.

[0085] The dispensing tip 14 has a circumferential protrusion 44 on the outer surface 40.

[0086] The circumferential protrusion 44 is arranged and configured such that when the tip 14 is inserted into the neck 20, the circumferential protrusion 44 engages with the clamping portion 30.

[0087] The outer diameter of the dispensing tip 14, defined at the outer surface 40 and measured at the circumferential protrusion, is strictly greater than the inner diameter of the neck 20 at the circumferential protrusion by a clamping distance, for example, between 0.05 mm and 0.15 mm, particularly 0.1 mm.

[0088] Where applicable, the outer diameter of the dispensing tip 14, defined at the outer surface 40 and measured at the circumferential protrusion, is strictly greater than the inner diameter of the neck 20 at the snap-fit ​​protrusion 32 by a distance, for example, between 0.17 mm and 0.27 mm, particularly 0.22 mm.

[0089] The dispensing tip 14 is inserted into the neck 20, such that the packaging device 10 has a clamping area 46, wherein the tip 14 applies a radial force on the neck 20, more specifically along the entire periphery of the neck 20.

[0090] When the tip 14 is inserted into the neck 20, the clamping area 46 is able to achieve a seal between the tip 14 and the body 12.

[0091] In the clamping region 46, the outer surface 40 of the dispensing tip 14 engages with the inner surface 26 of the neck 20, such that the dispensing tip 14 applies a radial force to the neck 20.

[0092] The radial force here can achieve a seal between the distribution tip 14 and the body 12.

[0093] The clamping area 46 here includes (more specifically) the circumferential protrusion 44 and the additional clamping portion 30.

[0094] The distance d between the clamping region 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 region 46 (corresponding to the inner diameter D of the neck in the clamping portion 30), and more specifically, greater than or equal to one-third of the inner diameter D in the clamping region 46.

[0095] The distance d is measured along the axial direction, which here corresponds to the direction of the main axis X between the distal end 24 of the neck 20 and the axial end of the clamping region 46 located closest to the distal end 24. In other words, the distance d corresponds to the minimum axial distance along the main axis that separates the clamping region 46 from the distal end 24 of the neck 20.

[0096] The circumferential protrusion 44 engages with the clamping portion 30 in the clamping region 46, such that the circumferential protrusion 44 presses against (more specifically, radially presses against) the clamping portion 30.

[0097] The tip 14 does not apply radial force to the neck 20 between the clamping region 46 and the distal end 24 or on the distal end 24.

[0098] The tip 14 does not apply force to the neck 20 between the clamping area 46 and the distal end 24 (excluding the clamping area and the distal end).

[0099] More specifically, the dispensing tip 14 and neck 20 do not make radial contact between the clamping region 46 and the distal end 24 (excluding the clamping region) or on the distal end 24.

[0100] More specifically, the dispensing tip 14 and neck 20 do not make radial contact between the clamping region 46 and the distal end 24 (excluding the clamping region and the distal end).

[0101] More specifically, the dispensing tip 14 is supported axially only on the distal end 24 of the neck 20 via a front support surface 15, for example, provided by a support collar. Preferably, when the dispensing tip 14 is secured to the neck 20 of the body 12, the front support surface 15 of the dispensing tip 14 applies a purely axial force on the distal end 24 of the neck 20, such that the tip is tensioned, in particular, in its axial portion extending between the front support surface 15 and the circumferential protrusion 44.

[0102] When the tip 14 is inserted into the neck 20, at any point between the clamping region and the distal end outside the clamping region, the inner diameter of the neck 20 at the inner surface 26 is here strictly greater than the outer diameter of the outer surface 40 of the tip 14 facing said point.

[0103] Here, the distance d between the clamping region 46 and the distal end 24 is, for example, greater than or equal to twice the thickness e of the neck in the clamping region 46 (corresponding to the thickness e of the neck in the clamping portion 30).

[0104] Here, the distance d between the clamping region 46 and the distal end 24 is, for example, greater than or equal to one-third of the longitudinal distance along the axial direction between the shoulder 34 and the distal end 24.

[0105] The packaging device also includes a cap 48.

[0106] The cap 48 can be directly fastened to the neck 20.

[0107] A method for assembling a packaging device 10 according to the present invention will now be described.

[0108] The assembly method includes the following steps: - Provide the subject 12 as described above, - Provides the distribution tip 14 as described above, and - The dispensing tip 14 is forcibly inserted into the neck 20, for example by a translational movement along the main axis X.

[0109] Insertion is performed such that the dispensing tip 14 is inserted into the opening until the dispensing tip 14 and the body 12 engage in the clamping area 46, engaging more specifically and tightly.

[0110] More specifically, insertion is performed until the circumferential protrusion 44 and the clamping portion 30 engage.

[0111] After insertion, the dispensing tip 14 does not apply radial force to the neck 20 between the clamping region 46 (excluding the clamping region) and the distal end 24. More specifically, no radial force is applied to the neck 20 outside the clamping region 46 of the dispensing tip.

[0112] In the example shown, during the insertion of the dispensing tip 14 into the neck 20, the circumferential protrusion 44 protrudes above the snap-fit ​​protrusion 32, such that after insertion, the snap-fit ​​protrusion 32 extends between the circumferential protrusion 44 and the distal end 24.

[0113] In addition to the radial clamping present between the two elements in the clamping area 46, the snap-fit ​​protrusion 32 prevents the tip 14 from disengaging from the body 12.

[0114] The snap-fit ​​protrusion 32 extends adjacent to the circumferential protrusion 44, such that the circumferential protrusion 44 axially abuts against the snap-fit ​​protrusion 32.

[0115] Here, the through indicator tip 14 of the snap-fit ​​protrusion 32 is inserted until the outer surface 40 of the dispensing tip 14 engages with the inner surface 26 of the neck 20 in the clamping region 46.

[0116] In an alternative embodiment not shown, the tip does not have a circumferential protrusion on its outer surface at the clamping region, and the neck includes a circumferential protrusion on its inner surface at the clamping region, such that in the clamping region, the outer surface of the distributing tip engages with the inner surface of the neck, and the distributing tip applies a radial force to the neck.

[0117] In embodiments not shown, the snap-fit ​​engagement is performed in different ways, for example, using at least one deformable lug.

[0118] Alternatively, the packaging device does not have a snap-fit ​​system.

[0119] Figure 3 A second example of a packaging device is shown in the figure.

[0120] We will now only describe the differences between the second example and the first example.

[0121] Similar to the first example, the packaging device 110 here includes a body 112, a tip 114, and also includes a cap 148.

[0122] The cap 148 can be screwed (instead of snapped) onto the neck 120 of the body 112.

[0123] The neck 120, for example, has an external thread 150 on its outer wall that is complementary to the internal thread of the cap 148.

[0124] In the cosmetic packaging device according to the invention, the clamping area is spaced a distance from the free edge, thereby limiting the force applied to the neck near the free edge.

[0125] Therefore, this limits the risk of free edge flaring or cracking, including for packaging devices made of a single material, more specifically PET.

Claims

1. A cosmetic packaging device (10; 110) comprising a body (12; 112) and a dispensing tip (14; 114), the body (12; 112) having a neck (20; 120) defining an opening (22), the dispensing tip (14; 114) being disposed in the opening, the body (12; 112) having a 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 region (46) in which the dispensing tip (14; 114) applies a radial force to the neck (20; 120), wherein, The distance (d) between the clamping region (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 region (46), preferably greater than or equal to one-third of the inner diameter (D) of the neck (20; 120) in the clamping region (46), and the dispensing tip (14; 114) does not apply radial force to the neck (20; 120) between the clamping region (46) and the distal end (24) or on the distal end (24).

2. The packaging apparatus according to claim 1, wherein, The body (12; 112) and the dispensing tip (14; 114) are made of the same material, more specifically of polyethylene terephthalate (PET).

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

4. The packaging apparatus according to any one of claims 1 to 3, wherein, The dispensing tip (14; 114) and the neck (20; 120) do not make radial contact between the clamping region (46) and the distal end (24) or at the distal end (24).

5. The packaging apparatus according to any one of claims 1 to 4, wherein, The dispensing tip (14; 114) has a circumferential protrusion (44) on the outer surface (40) of the clamping region (46), and / or the neck (20; 120) has a circumferential protrusion on the inner surface (26) of the clamping region (46).

6. The packaging apparatus according to any one of claims 1 to 4, wherein, The dispensing tip (14; 114) has a circumferential protrusion (44) on its outer surface (40), which engages with the clamping portion (30) of the inner surface (26) of the neck (20; 120) in the clamping region (46) such that the circumferential protrusion (44) presses against the clamping portion (30) of the inner surface (26).

7. The packaging apparatus according to claim 6, wherein, The inner surface (26) of the neck (20; 120) has a snap-fit ​​protrusion (32) between the distal end (24) and the clamping portion (30), the inner diameter of the neck (20; 120) at the snap-fit ​​protrusion (32) being strictly smaller than the outer diameter of the dispensing tip (14; 114) at the circumferential protrusion (44).

8. The packaging apparatus according to any one of claims 1 to 7, wherein, The body (12; 112) has a shoulder (34), the neck (20; 120) extends between the shoulder (34) and the distal end (24), and the distance (d) between the clamping area (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. A method for assembling a packaging device (10; 110) according to any one of claims 1 to 8, the method comprising the following steps: - Provide a body (12; 112) having a neck (20; 120) defining an opening (22), the body (12; 112) having a distal end (24) forming a free edge of the neck (20; 120), - Provides a distribution tip (14; 114), and - The dispensing tip (14; 114) is forcibly inserted into the neck (20; 120) such that the dispensing tip (14; 114) is positioned in the opening (22) until the dispensing tip (14; 114) engages with the body (12; 112) in a clamping region (46) in which the dispensing tip (14; 114) applies a radial force to the neck (20; 120), wherein the distance (d) between the clamping region (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 region (46), preferably greater than or equal to one-third of the inner diameter (D) of the neck (20; 120) in the clamping region, and the dispensing tip (14; 114) does not apply a radial force to the neck (20; 120) between the clamping region (46) and the distal end (24) or on the distal end (24).

10. The packaging apparatus (10; 110) according to claim 5, and the assembly method according to claim 9, wherein, During the insertion of the dispensing tip (14; 114) into the neck (20; 120), the circumferential protrusion (44) protrudes above the snap-fit ​​protrusion (32) such that after insertion, the snap-fit ​​protrusion (32) extends between the circumferential protrusion (44) and the distal end (24).

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