CONTAINER FOR A POWDERED COSMETIC PRODUCT

Abstract

The invention relates to a container (1) for a powdered cosmetic product (P). The container (1) has a central axis (X) and includes an insert (10) fixed to the lid. The insert has a sealing base (13) bearing against a sieve when the lid is screwed on. The sealing base (13) of the insert comprises a first proximal annular contact element (15) of a central window closed by a grid (9a) bearing flat against a central region (13a) of the sealing base, and a second distal annular contact element (16) of the central window. The first and second annular contact elements are separate and bear flat against an upper wall (7a) of the annular support of the sieve when the lid is screwed on, so as to obtain a double radially external seal of the central window (8). Figure for the abstract: Fig. 1

Description

Title of the invention: CONTAINER FOR A POWDERED COSMETIC PRODUCT Technical field of the invention

[0001] The present invention relates to a container for a powdered cosmetic product.

[0002] The cosmetic product is described as powdery because it is in the form of a loose powder, particularly used for makeup. The cosmetic product therefore has a natural tendency to disperse. Technical background

[0003] Various examples of the design of containers intended to receive a powdered cosmetic product, such as loose powder or other similar products used for makeup, are known from the prior art.

[0004] Containers for powdered cosmetic products according to the prior art typically comprise a base having a cavity for receiving the powdered cosmetic product, the cavity opening axially through an opening, a sieve arranged in the opening so as to seal the cavity and comprising an annular support defining a central window closed by a grid, and a lid for closing the container which is intended to be screwed onto the base between an unscrewed position and a screwed position ensuring a tight seal of the opening. In order to prevent the powdered product from being discharged uncontrollably from the receiving cavity, for example during transport, and to prevent the cleanliness of the container from being compromised, solutions have been proposed in the prior art.

[0005] One initial solution involved placing and firmly pressing a sponge against the grid. However, when the sponge was removed, a suction effect occurred, leaving it with an excessive amount of cosmetic product on its side facing the grid.

[0006] A second solution consisted of using a cap to cover the sieve in order to isolate it and prevent the dispersion of the cosmetic product. However, once the container had been used at least once by the user, the sieve became coated with powder and the cap lost its purpose since it could not clean the surface of the sieve.

[0007] According to a third solution, the housing comprises a deformable membrane having one face facing the sieve, this deformable membrane being able to conform to the shape of the sieve during the screwing of the lid. The face facing the sieve has raised elements allowing the sieve to be cleaned by friction, which is particularly useful after the first use of the housing. However, this The solution did not provide sufficient sealing, as traces of powder could still be found outside the cavity, which could negatively impact the user's perception of the product.

[0008] Recently, therefore, containers for powdered cosmetic products have been proposed comprising an insert fixed to the lid which includes a sealing base that rests against the sieve in the targeted position of the lid.

[0009] Document CN211559073 proposes such a container for a powdered cosmetic product. In this container, the insert has a mushroom shape in which, by analogy to the shape of a mushroom, it comprises a cap corresponding to an upper portion of the insert attached to the lid, and a stem corresponding to a lower portion of the insert in contact with the sieve and a rim of the opening in which the sieve is arranged. The cap is made of a rigid material, while the stem is made of a flexible material. Thus, when the lid is screwed onto the base of the container, the insert deforms to conform to the contours of the rim and the sieve, thereby ensuring a seal for the lid. To achieve this difference in the modulus of elasticity between the two parts of the insert, the latter is made of two materials. However, this prevents any recycling of the insert. Furthermore, it significantly complicates the manufacturing process of the insert.

[0010] Document EP2454964 proposes a cosmetic product container in which the insert is entirely rigid. The insert comprises, again by analogy to a mushroom, a base including an annular sealing foot 151 and a sealing base 152 formed within the sealing foot 151. The sealing base 152 is intended to be in contact with the sieve and prevents the discharge of the powdered cosmetic product. The annular sealing foot 151 includes a protrusion extending along the closing axis of the lid, which is configured to bear against a rim of the opening in which the sieve is arranged. Thus, when the lid 3 is screwed onto the base 2 of the container, the sealing base 152 forms a first sealing zone while the annular sealing foot 151 forms a second sealing zone. The cover 3 further includes an annular projection 141 which allows to generate a high sealing zone with the base 2.Although the solution proposed in this document aims to improve sealing, the powder discharge portion 132 is recessed to a predetermined depth relative to an upper surface of the bottom of the central cap by a sealing step 133, and when the sealing base 152 is mounted in the sealing step 133, a gap is formed between the sealing base 152 and the powder discharge portion 132. However, the product tends to stagnate in this gap. Furthermore, this gap promotes dispersion of the product into the rest of the casing, and the sealing foot alone cannot prevent this.

[0011] The present invention proposes a solution to at least some of the problems mentioned above. Summary of the invention

[0012] The invention provides a container for a powdered cosmetic product, the container having a central axis and comprising:

[0013] - a base comprising a cavity for receiving the powdered cosmetic product, the cavity opening axially through an opening

[0014] - a sieve arranged in the opening so as to seal the cavity and comprising a annular support defining a central window closed by a grille

[0015] - a housing closure cover that is intended to be screwed onto the base between a unscrewed position and a screwed position ensuring a tight seal of the opening,

[0016] - an insert fixed to the cover and comprising a sealing base that provides support against the sieve in the screwed-on position of the lid.

[0017] The housing is characterized in that the grid is flat-supported on a central region of the sealing base and in that the sealing base of the insert comprises a first proximal annular contact element of the central window and a second distal annular contact element of the central window, the first and second annular contact elements being distinct and flat-supported on an upper wall of the annular support of the sieve when the cover is in the screwed position, so as to obtain a double radially external seal of the central window.

[0018] The container for powdered cosmetic products according to the invention offers improved radial sealing compared to prior art containers. Specifically, it comprises a first annular contact element proximal to the central window and a second annular contact element distal to the central window. Although these two separate elements each allow the lid to be sealed individually, their arrangement creates a double barrier for the powdered product passing through the sieve. Indeed, if any of the powdered product passes through the first annular contact element, it is radially blocked by the second annular contact element. Thus, when the user opens the lid, no trace of soiling is visible and their perception of the product is not diminished.

[0019] According to various features of the invention which may be taken together or separately: • The grid is flush with the upper wall of the annular support of the sieve; • said first annular contact element consists of a deformable and continuous overthickness; • the second annular contact element consists of an annular rib; • said annular rib consists of a fold in the sealing base; • the first annular contact element is separated from the second annular contact element by a gap extending over a radial distance of between 5% and 20% of a radius of the sealing base of the insert, preferably between 10% and 15% of the radius; • a section of the sealing base defined between the first and second annular contact element is flexible; • the grid is flush with the upper wall of the annular support of the sieve so as to be in flat contact with a central region of the sealing base; • the grid is fixed in the sieve by wedging between the annular support and a counter-support fixed under the annular support, said counter-support having a central return fitting into the central window so as to raise the grid to the level of the upper wall of the annular support of the sieve; • the grid is fixed in the sieve by wedging between the annular support and a counter-support fixed under the annular support, said counter-support having a central return fitting into the central window so as to raise said grid; • the base, the ring support, the lid and the insert are made of polypropylene; • The base, the ring support, the lid and the insert are made of polyethylene terephthalate. ethylene; • the casing is made of a single material; • the case is made of polypropylene; • the insert is made of a single material and has a single modulus of elasticity; • the central region of the sealing base includes reinforcing ribs for a flat support of the sealing base on the grid; • The insert is clipped to the lid by additional fastening means. Brief description of the figures

[0020] Other objects, features and advantages of the invention will become more apparent in the following description, made with reference to the accompanying figures, in which:

[0021] - Fig. 1 is a cross-sectional view of a housing according to one embodiment of the present invention,

[0022] - Fig. 2 is an exploded view of the housing illustrated in Fig. 1.

[0023] - Fig. 3 is a close-up view of the housing according to a first variant of the design. Illustration showing a lid, an insert, and a sieve.

[0024] - Fig. 4 is a close-up view of the housing according to a second variant of the design. Illustration showing the lid, insert and sieve,

[0025] - Figure 5 is a close-up view of the housing according to an alternative embodiment. illustrating the lid, insert and sieve. Detailed description of the invention

[0026] Fig. 1 illustrates a container 1 for a powdered cosmetic product P having a central axis X.

[0027] In the present application, the terms "axial", "axially", "radial" and "radially" are defined with respect to the central axis X.

[0028] The terms "upper" and "lower" are used as a geometric reference in relation to the axial orientation as shown in the figures and independently of the direction of Earth's gravity.

[0029] As mentioned in the preamble to this description, the cosmetic product P is described as powdery because it is in the form of a loose powder, notably used for makeup. The cosmetic product therefore has a natural tendency to disperse. Typically, the powder particles of the powdery cosmetic product P generally have an average diameter between 2 µm and 100 µm. These powder particles can therefore easily infiltrate the various crevices of the container. The container 1 according to the invention prevents any infiltration of the powdery cosmetic product particles into areas visible to the user.

[0030] The housing 1 comprises a base 2 having a cavity 3 for receiving the powdered cosmetic product P. This cavity 3 opens axially through an opening 4. The housing 1 also comprises a cover 5 for closing the housing 1, which is intended to be screwed onto a neck of the base 2 so as to ensure a tight seal of the opening 4. The cover 5 is movably mounted on the base 2 between an unscrewed position, in which it does not tightly seal the opening 4, and a screwed position in which it tightly seals the opening 4. Thus, any position of the cover 5 in which it does not tightly seal the opening is associated with an unscrewed position. In [Fig. 1], the cover 5 is in the screwed position.

[0031] All the parts composing the housing 1 are cylindrical parts of revolution about the central axis X. The receiving cavity 3 is delimited axially by a bottom 20 of the base 2, and radially by a peripheral annular wall 21 of the base extending from the bottom 20. The base 2 thus allows the powdered cosmetic product P to be received. The peripheral annular wall 21 includes an upper end 22 corresponding to the neck of the base, provided with a first external helical rib 23, called the screw thread, onto which the cover 5 can be screwed. In this respect, the cover 5 includes a second helical rib 24 adapted to cooperate with the first helical rib 23 to allow for interlocking. without play, from the lid 5 on the base 2.

[0032] The housing 1 further includes a sieve 9 arranged in the opening 4 so as to close the cavity 3. In the embodiment illustrated in the figures, the sieve 9 has a general dome shape. It includes means for attaching it to the base. These means consist of a first end 25 fixed to the base 2. The sieve 9 includes, at its first end 25, an annular retaining tab 27 into which the upper end 22 of the base is fitted. The sieve 9 is thus rigidly fixed to the base 2.

[0033] Furthermore, the sieve 9 includes an annular support 7, located inside the receiving cavity 3, which defines a central window 8 closed by a grid 9a. The grid 9a is, so to speak, the active part of the sieve 9. It comprises a set of (non-visible) meshes forming a set of passage holes for the powdered cosmetic product P to exit the receiving cavity 3. Each passage hole advantageously has dimensions significantly larger than those of the particles composing the powdered cosmetic product P; that is to say, each of the passage holes has dimensions at least one order of magnitude larger than those of said particles.

[0034] The housing 1 further includes an insert 10 fixed to the cover 5, which comprises a sealing base 13 that bears against the sieve 9 when the cover 5 is in the screwed position. More precisely, the sealing base of the insert 10 bears against the annular support 7 of the sieve 9. As will be described in more detail later, the present invention aims to prevent the infiltration of powdered cosmetic product P into areas 31 of the sieve 9 by means of the insert 10, where its presence is undesired. These areas 31 are parts of the sieve 9 that are visible to the user and are liable to become covered with powdered cosmetic product if sufficient sealing is not ensured.

[0035] As illustrated in Figures 1 and 2, the insert 10, like the sieve 9, has a general dome shape. The insert 10 comprises a first axial end 14 fixed to the cover 5 and the sealing base 13 resting on the annular support 7 of the sieve 9. The first axial end 14 and the cover 5 include additional means 29, 30 for attaching the insert 10 to the cover 5. The additional attachment means may consist of a clip that stiffens the assembly of the insert 10 and the cover 5. Other means of attaching the insert 10 to the cover 5 may be envisaged within the scope of the present invention.

[0036] With reference to [Fig. 3], the housing 1 according to the invention differs from prior art housings in that the grid 9a rests flat on a central region 13a of the sealing base 13 and in that the sealing base 13 of the insert 10 comprises a first proximal annular contact element 15 of the central window 8 and a second distal annular contact element 16 of the central window 8, the first 15 and second 16 annular contact elements being distinct and bearing planar support on an upper wall 7a of the annular support 7 when the cover 8 is in the screwed position so as to obtain a double radially external seal of the central window 8.

[0037] Advantageously, the grid 9a is flush with an upper wall 7a of the annular support 7 of the sieve 9

[0038] The first annular contact element 15 is proximal to the central window 8 and provides a first radially external seal for the central window 8. The second annular contact element 16 is distal to the central window 8. It is therefore further from the central window 8 than the first annular contact element 15. The second annular contact element 16 thus provides a second radially external seal for the central window 8.

[0039] The housing 1 according to the invention thus provides a double radial external seal for the central window 8 by means of the first 15 and second 16 annular contact elements. Therefore, when the powdered cosmetic product P passes through the grid 9a, located at the central window 8, it cannot use the recesses to infiltrate and reach the areas 31 of the sieve 9 where its presence is undesirable. Regardless of the orientation given to the housing 1 by the user, the double radial seal at the interface between the sealing base 13 of the insert 10 and the upper wall 7a of the annular support 7 ensures that the powdered cosmetic product P can be distributed through the grid 9a without infiltrating the recesses of the housing 1.

[0040] Advantageously, the first annular contact element 15 consists of a deformable and continuous raised section 15. Thus, when the cover 5 is screwed onto the base 2, the insert 10 exerts greater pressure on the upper wall 7a of the annular support 7 at the location of the deformable and continuous raised section 15. Since the raised section 15 is deformable, the force exerted on the upper wall 7a creates a planar contact, and not merely a point contact, between the raised section 15 and the upper wall 7a. Furthermore, as the raised section 15 is continuous, this planar contact is annular and continuous around the central window 8. This annular planar contact acts as a first barrier, limiting the infiltration of the powdered cosmetic product P into areas 31 of the sieve 9 where its presence is undesirable.

[0041] Also advantageously, the second annular contact element 16 consists of an annular rib 16. As previously stated, the second contact element 16 is further from the central window 8 than the first annular contact element 15. Incidentally, this annular rib 16 is further from the central window 8 than the first contact element 15, in this case from the sur Thickness 15. When the cover 5 is screwed onto the base 2, the insert 10 exerts greater pressure on the upper wall 7a of the annular support 7 at the level of the annular rib 16. Like the deformable and continuous thickness 15, the annular rib 16 is in continuous annular plane contact around the central window 8. This annular plane contact acts as a second barrier, preventing the infiltration of particles of the powdered cosmetic product P that may have managed to pass through the first annular contact element 15 into areas 31 of the sieve 9 where their presence is undesirable. The annular rib 16 thus provides a second radially external seal around the grid 9a.

[0042] The flat contact being located between the cover 5 and the annular support 7, it ensures a tight closure of the opening 4, and notably the sealing of the housing 1 against the outside.

[0043] Preferably, the annular rib 16 consists of a fold in the sealing base 13. In other words, the annular rib 16 is formed by an undulation of the sealing base 13, which makes it deformable without having to modify the thickness, density or modulus of elasticity of the sealing base 13. In the embodiment illustrated in [Fig. 3], this fold in the sealing base 13 generates a protrusion towards the upper wall 7a of the annular support 7 which flattens when the cover 5 is screwed onto the base 2. By flattening, the fold generates a force which is exerted on a larger annular contact surface against the annular support 7a compared to a situation where the annular rib 16 would be parallelepiped-shaped.

[0044] With reference to Figures 4 and 5, according to a preferred embodiment, a gap 17 is created between the sealing base 13 and the annular support 7, and more precisely between the two sealing zones, i.e. between the first annular contact element 15 and the second annular contact element 16. This gap 17 extends over a radial distance D of between 5% and 20% of a radius R of the sealing base 13 of the insert, preferably between 10% and 15% of the radius R. The presence of this gap 17 between the first 15 and second 16 annular contact elements allows the second contact element 17 to have enough space to deform without this deformation being altered by the presence of the first annular contact element 15. Thus, the first 15 and second 16 annular contact elements can deform simultaneously independently of each other.

[0045] It is preferable that the radial distance D over which the gap 17 extends be at least 5% of the radius R of the sealing base 13 so that these deformation movements remain independent of each other. Concurrently, it is preferable that the radial distance D over which the gap 17 extends not exceed 20% of the radius R of the sealing base 13 so as not to allow the powdered cosmetic product P to reform a cluster of particles between the first contact element 15 and the second contact element 16. Indeed, this would impair the double sealing effect achieved by the housing 1 according to the invention. That being said, it is preferable that the radial distance D over which the gap 17 extends be between 10% and 15% of the radius R of the sealing base 13. This allows for optimal double deformation, with deformations independent of each other, while minimizing the aforementioned material accumulation effect.

[0046] Incidentally, a section 18 of the sealing base 13 defined between the first 15 annular contact element and the second annular contact element 16 is flexible. This flexibility ensures the long-term operation of the double seal provided by the housing 1 according to the invention by ensuring controlled and repeatable movements of the first annular contact element 15 and the second annular contact element 16.

[0047] According to an advantageous embodiment, the central region 13a of the sealing base includes reinforcing ribs 14 for a flat bearing of the sealing base on the grid 9a. These reinforcing ribs 14 stiffen the central region 13a, thereby preventing lateral deformation of the sealing base 13 when the cover is screwed onto the base 2. Thus, bending of the central region 13a of the sealing base due to the pressure generated when screwing on the cover 5 is prevented, and the double sealing effect produced by the first 15 and second 16 contact elements is not degraded.

[0048] At this stage, it can be specified that the central region 13a designates the part of the sealing base 13 that is not supported by the upper wall 7a and that is located radially internal to the part of the sealing base 13 that is opposite the upper wall 7a. This latter part of the sealing base 13 is the peripheral region 13b of the sealing base 13.

[0049] When the grid 9a is arranged in this way, the central region 13a of the sealing base remains flat, i.e., it does not have any undulation. This prevents the sealing base 13 from curving when the cover 5 is screwed onto the base 2. Indeed, the central window 8 is bordered by the annular support 7 on which the sealing base 13 rests when the cover 5 is screwed onto the base 2. Thus, when the grid 9a is positioned below the upper wall 7a of the annular support 7, the sealing base 13 eventually bends upon contact with the upper wall, particularly at the interface between its central region 13a and its peripheral region 13b, when the cover 5 is screwed onto the base 2. The resulting bend from this deformation can be detrimental to the seal.When the grid 9a is flush with the upper wall 7a of the annular support 7, the central region 13a of the sealing base 13 remains flat since the grid 9a, which is arranged in the central window 9a, is at the same level as the upper wall 7a.

[0050] In this regard, as illustrated in [Fig. 3], the grid 9a can be fixed in the sieve 9 by wedging it between the annular support 7 and a counter-support 32 fixed below the annular support 7. In this particular embodiment, the counter-support 32 has a central return 33 that enters the central window 8 so as to raise the grid 9a to the level of the upper wall 7a of the annular support 7 of the sieve 9. In this respect, the central return 33 penetrates the central window 8 to a suitable distance so that the grid 9a is flush with the upper wall 7a of the annular support 7 once it rests on the central return 33. In practice, the grid 9a includes an elbow that follows the contour of the counter-support 32 so that the part of the grid 9a intended to be in contact with the sealing base 13 is at the same level, in other words, aligned with the upper wall 7a.Furthermore, the sieve 9 may include an annular space 11, formed between the counter-support 32 and the annular support 7, into which said grid 9a can be inserted and wedged. This ensures the stability of the grid 9a and, consequently, that of the sealing base 13 when it is pressed against said grid 9a.

[0051] At this stage, it can be specified that by being thus arranged on the grid 9a, the sealing base also ensures a cleaning function of the grid 9a since it remains in contact with said grid 9a.

[0052] According to a preferred embodiment, the base 2, the ring support 7, the cover 5, and the insert 10 are made of the same plastic material. This saves the user from having to sort the different parts of their case 1, according to the materials, in order to dispose of it in different recycling bins.

[0053] The plastic material may be selected from polypropylene (PP), recycled polypropylene (R-PP), polyethylene terephthalate (PET), recycled polyethylene terephthalate (R-PET), a thermoplastic elastomer (TPE), polyethylene (PE), such as low-density polyethylene (LDPE) and / or high-density polyethylene (HDPE), a composite material, a post-consumer recycled material (PCR and / or a similar material). Preferably, the base 2, the ring support 7, the lid 5, and the insert 10 are made of polypropylene and / or recycled or non-recycled polyethylene terephthalate. Recycling these components of the housing 1 is facilitated in a well-known recycling cycle.

[0054] Preferably, the housing is made of a single material, i.e., it is monomaterial. Even more preferably, the housing 1 is made of polypropylene. Thus, the housing 1 can be easily recycled in a stream specifically dedicated to polypropylene. In this case as well, the recycling of the housing 1 is facilitated in a well-known recycling cycle.

[0055] Thus, advantageously, the base 2, the ring support 7, the cover 5 and the insert 10 are made of plastic material selected from polypropylene and / or polyethylene terephthalate.

[0056] The housing 1 can be produced by 3D printing.

[0057] In particular, the base 2, the ring support 7, the cover 5 and the insert 10 can be produced by 3D printing. Such a printing process makes it possible, in particular, to create these parts with great freedom, featuring patterns and shapes that contribute to the aesthetic appearance of the housing 1.

[0058] According to an embodiment in which the base 2, the ring support 7, the lid 5, and the insert 10 are made of different materials, the base 2 can be made of glass. This allows the user to see the inside of the container 1, and in particular to see the powdered cosmetic product P, which is more aesthetically pleasing and also more practical. Indeed, a simple visual check makes it possible to know the level of product remaining in the container 1.

[0059] According to another embodiment in which the base 2, the ring support 7, the cover 5, and the insert 10 are made of different materials, the cover 5 can be made of aluminum, which makes it lightweight. This embodiment can be combined with the one in which the base 2 is made of glass.

[0060] Moreover, the insert 10 can advantageously be made of a single material with a single modulus of elasticity. The entire insert 10 therefore has the same rigidity, which simplifies its manufacture since it is not necessary to provide areas with different thicknesses and / or densities for the same material and / or having undergone different treatments.

[0061] The configurations shown in the cited figures are only possible examples, by no means limiting, of the invention which on the contrary encompasses design variants within the reach of a person skilled in the art.

Claims

Demands

1. A case (1) for a powdered cosmetic product (P), the case (1) having a central axis (X) and comprising: - a base (2) having a cavity (3) for receiving the powdered cosmetic product (P), the cavity (3) opening axially through an opening (4), - a sieve (9) arranged in the opening (4) so ​​as to close the cavity (3) and comprising an annular support (7) defining a central window (8) closed by a grid (9a), - a cover (5) for closing the case (1) which is intended to be screwed onto the base (2) between an unscrewed position and a screwed position ensuring the airtight closure of the opening (4), - an insert (10) fixed to the cover (5) and comprising a sealing base (13) bearing against the sieve (9) in the screwed position of the cover (5);the housing (1) being characterized in that the grid (9a) is in planar support on a central region (13a) of the sealing base (13), and in that the sealing base (13) of the insert comprises a first annular contact element (15) proximal to the central window (8) and a second annular contact element (16) distal to the central window (8), the first and second annular contact elements (15, 16) being distinct and in planar support on an upper wall (7a) of the annular support (7) of the sieve (9) when the cover (5) is in the screwed position, so as to obtain a double radially external seal of the central window (8).

2. Housing (1) according to claim 1, in which the grid (9a) is flush with the upper wall (7a) of the annular support (7) of the sieve (9).

3. Housing (1) according to any one of claims 1 or 2, wherein said first annular contact element (15) consists of a deformable and continuous overthickness (15).

4. Housing (1) according to any one of claims 1 to 3, wherein the second annular contact element (16) consists of an annular rib (16).

5. Housing (1) according to the preceding claim, wherein said annular rib (16) consists of a fold of the sealing bottom (13).

6. Housing (1) according to any one of the preceding claims, wherein the first annular contact element (15) is separated from the second annular contact element (16) by a gap (17) extending over a radial distance (D) between 5% and 20% of a radius (R) of the sealing base (13) of the insert, preferably between 10% and 15% of the radius (R).

7. Housing (1) according to the preceding claim, in which a section (18) of the sealing base defined between the first (15) and the second (16) annular contact element is flexible.

8. Housing (1) according to any one of the preceding claims, wherein the grid (9a) is fixed in the sieve (9) by wedging between the annular support (7) and a counter-support (32) fixed under the annular support (7), said counter-support (32) having a central return (33) entering into the central window (8) so as to raise the grid (9a) to the level of the upper wall (7a) of the annular support (7) of the sieve (9).

9. Housing (1) according to any one of claims 1 to 7, wherein the grid (9a) is fixed in the sieve (9) by wedging between the annular support (7) and a counter-support (22) fixed under the annular support (7), said counter-support (22) having a central return (23) entering into the central window (8) so as to raise said grid (9a).

10. Housing (1) according to any one of the preceding claims, wherein the base (2), the ring support (7), the cover (5) and the insert (10) are made of polypropylene (PP) and / or PET.

11. Housing (1) according to any one of the preceding claims made of a single material.

12.

13. Housing (1) according to claim 11, made of polypropylene. Housing (1) according to any one of the preceding claims, wherein the insert (10) is made of a single material and has a single modulus of elasticity.

14. Housing (1) according to any one of the preceding claims, wherein the central region (13a) of the sealing base includes reinforcing ribs (14) for a flat support of the sealing base on the grid (9a).

15. Housing (1) according to any one of the preceding claims, in which the insert (10) is clipped to the cover (5) by additional fastening means (29, 30).

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