WO2011135250A1 - Single-use packaging for a cosmetic product sensitive to exposure to ultraviolet radiation - Google Patents

Abstract

The packaging comprises a hollow body (2) comprising a rigid wall (4) delimiting an enclosure (8) with a major dimension of between 3 cm and 20 cm and a volume of between 7 ml and 250 ml, so as to form a single-use packaging for cosmetic product, comprising a transparent and colourless part (11) made of glass that is substantially inert towards ultraviolet radiation, is thick in relation to the dimensions of the hollow body (2), having a thickness of not less than 5 mm, so that it is visibly perceivable from the outside of the hollow body (2), a photochromic and ultraviolet-resistant coating (13), firmly attached to the peripheral wall (4) and chosen so that, when not exposed to ultraviolet radiation it is transparent and colourless and so that, when exposed to ultraviolet radiation, it becomes transparent and slightly coloured.

Description

 PACKAGING FOR INDIVIDUAL USE OF A COSMETIC PRODUCT THAT IS SENSITIVE TO EXPOSURE TO ULTRAVIOLET RADIATION

The invention relates to packaging for individual use of a cosmetic product sensitive to exposure to ultraviolet radiation.

The invention more particularly relates, in the first place, to a hollow container body comprising a rigid peripheral wall delimiting an enclosure adapted to receive a fluid cosmetic product and having a passage opening, and a light-sensitive coating, such as when the hollow body is exposed to ultraviolet radiation from the outside, the thickness of a transparent and colorless glass part, associated with the peripheral wall, remains visually perceptible from the outside and that the cosmetic product being in the enclosure is protected from ultraviolet radiation by the photochromic coating and resistant to ultraviolet radiation, while being visually perceptible from the outside of the hollow body through the transparent and colorless glass portion and the photochromic coating and resistant to ultraviolet radiation then slightly colored is a visible indicator of product protection cosmetics.

The subject of the invention is also, secondly, a packaging for individual and multiple use of such a cosmetic product, comprising such a hollow container body and closure and dispensing means cooperating with its passage opening. It also relates to a packaging unit for individual and multiple use, comprising such a package and an overwrap resistant to ultraviolet radiation.

The third subject of the invention is also a cosmetic product packaged in such a packaging for individual and multiple use. Finally, the fourth and last object of the invention is a method for producing such a hollow container body.

We know that in the case of a cosmetic product, the presentation is both decisive and specific. By "presentation", it is necessary to understand all the technical and visual characteristics - as well as their results and effects - of the conditioning of the cosmetic product that ensure the functionality of the packaging and its explicit or implicit, objective or subjective perception by the individual user. final, one and the other being intimately linked. In the case of cosmetics, the requirements in this area are complex and of a high standard. In fact, a large number of functional, technical, visual, ornamental, marketing and commercial requirements or constraints have to be met, or related, for example, to communication and consumer safety and information. In addition, the packaging must be creative and original, so that the cosmetic product can prevail in a competitive environment. Finally, industrialization must be possible - as much as possible mechanized - and be effective and efficient. It is for all these reasons that the presentation of cosmetic products, especially for the most qualitative of them, is so decisive. Taken as a whole, the requirements and constraints of presentation of cosmetic products in general are not comparable to those of most other products (such as food products or pharmaceuticals that have other requirements and constraints). As regards the cosmetic products themselves, the requirements and constraints are not all identical for the different types of packaging.

Here, the cosmetic product packaging considered is of the type for individual use, comprising a hollow container body, such as a bottle or pot, having a rigid peripheral wall with which is associated, in particular which comprises, a transparent and colorless part made of glass, delimiting an enclosure - the largest dimension of which is between 3 cm and 20 cm and the volume between 7 ml and 250 ml - of receiving a a cosmetic product in the fluid state such as a cream, sensitive to exposure to ultraviolet radiation - as happens with exposure to the sun or UV lamps - (sometimes referred to as "sensitive product") ) and which, for this reason must be protected if it is exposed to ultraviolet radiation, and having a passage opening with which cooperate shutter means and distribution. Such packaging is intended for multiple use - as opposed to single use -. On the other hand, such a packaging is, in combination, of the type such that, in the case of exposure to ultraviolet radiation, most often occasional, the user must be able, on the one hand, to continue to perceive visually both the cosmetic product that the thickness of the transparent and colorless glass part, one and the other contributing to the attractiveness of the cosmetic product, and, on the other hand, perceive by a visible witness that the cosmetic product is protected ultraviolet radiation to which it is exposed. This type of cosmetic product packaging must meet specific and specific requirements and constraints that are not met for other types of cosmetic product packaging.

The visual perception by the user of the cosmetic product, in all circumstances (no exposure to ultraviolet radiation or on the contrary exposure to such radiation), not only allows to know the level of filling of the packaging, but participates in the sensitive proximity that the user wishes to have with the cosmetic product. The visual perception by the user of the thickness of the transparent and colorless glass part of the container hollow body of the packaging is very important as it contributes to the perceived quality of the cosmetic product. The presence of a visible indicator that the cosmetic product is protected from the ultraviolet radiation to which it is exposed contributes to the safety and comfort of the user of the cosmetic product.

Flexible, opaque, ultraviolet-resistant hollow bodies are known, for example coextruded material derived from polyethylene or from a plastic material to which an ultraviolet radiation resistance additive (EP-A-1252226, EP-A) has been added. A-1531 170, EP-A-0591054, KR-20030036121). Hollow dark-colored glass bodies, for example made of brown glass, are also known (see, for example, the DURAN® laboratory flasks offered by the SCHOTT company). In the 1960s, the CORNING company developed photochromic lenses used especially in eyewear. None of these embodiments is adapted to the type of cosmetic product packaging previously described and which is the subject of the invention.

GB-A-2382560 discloses a vase or receptacle, such as a bottle, a jar, a cup, a laboratory glassware, a carton or a box, typically for a food product or beverage, of any material that either: glass, plastic, metal, paper, which comprises an outer or inner coating deposited by a cold-coating process, having one or more agents chosen from thermosensitive, thermochromic, photosensitive, photochromic, luminescent, thermoluminescent, absorbent agents or resistant to ultraviolet light. This document gives a general education, but does not specifically describe or suggest a cosmetic product packaging for individual and multiple use, comprising a hollow body having a rigid peripheral wall with which is associated a transparent and colorless glass portion delimiting an enclosure whose larger dimension is between 3 cm and 20 cm and the volume between 7 ml and 250 ml, for receiving a cosmetic product sensitive to ultraviolet radiation exposure. The document GB-A-2382560 neither poses nor solves the specific problem of a packaging such that, in combination, in the case of exposure to ultraviolet radiation, the user must be able, on the one hand, to continue to perceive visually both the cosmetic product and the thickness of the transparent and colorless glass part and, on the other hand, perceive by a visible control that the cosmetic product is protected from the ultraviolet radiation to which it is exposed. WO 2005/04001 1 discloses an industrial container large enough for the transport, shipping and storage of a number of substrates, namely semiconductor wafers, between work sites, these wafers being exposed to harmful ultraviolet radiation if extended. This container includes a transparent portion having a photochromic portion that darkens or changes color if exposed to ultraviolet radiation. The employee handling the container thus receives a clear signal of exposure to ultraviolet radiation and can change the container position to prevent or minimize this exposure. WO 2005/04001 1 neither poses nor solves the specific problem of an individual and multiple use packaging having a transparent and colorless glass part, an enclosure having the size and volume of the order of those of the invention of receiving a sensitive cosmetic product, in particular coming into contact with the inner face of the enclosure, such that, in combination, in the case of exposure to ultraviolet radiation, the user must be able to perceive visually the cosmetic product and the thickness of the transparent and colorless glass part and, by a visible control, that the cosmetic product is protected from the ultraviolet radiation to which it is exposed. On the contrary, it is explicit that WO 2005/04001 1 does not provide that the content is protected from ultraviolet radiation by the container itself.

WO 2008/014529 discloses a falsification proof sheet and a blister comprising such a sheet. The film comprises a composite structure having a transparent layer and another layer secured together by means of an adhesive layer. There is a photochromic material.

The specific technical problem underlying the invention is therefore to propose a cosmetic product packaging that must be protected from ultraviolet radiation (exposure to the sun or to UV lamps, etc.) which, in combination:

^■ Fulfills the general requirements and constraints imposed by a cosmetic product packaging,

^■ In particular, for individual and multiple use.

^■ Comprising a hollow container body having a rigid peripheral wall with which is associated a transparent and colorless glass part, delimiting an enclosure - the largest dimension is between 3 cm and 20 cm and the volume between 7 ml and 250 ml -, and having a passage opening with which cooperate closure means and distribution.

^■ Be able to receive a cosmetic product in the fluid state coming into contact with the inner face of the enclosure and to be protected in case of exposure to ultraviolet radiation.

^{■ In} such a way that, in the event of exposure to ultraviolet radiation, the user must be able, on the one hand, to continue to visually perceive both the cosmetic product and the thickness of the transparent and colorless glass part, and, d on the other hand, to perceive by a visible witness that the cosmetic product is protected from the ultraviolet radiation to which it is exposed.

The state of the art known provides no solution to this specific technical problem. If the suggestion, in very general terms, of a coating having a photosensitive, photochromic or absorbent or resistant to ultraviolet light is interesting, it is insufficient to concretely achieve such a cosmetic product packaging.

For this purpose, and in a first aspect, the invention relates to a hollow container body comprising a rigid peripheral wall defining an enclosure and having a passage opening, and a light-sensitive coating. This hollow body is such that:

^■ the enclosure has a large dimension of between 3 cm and 20 cm and a volume of between 7 ml and 250 ml, so as to be specially adapted to the constitution of a packaging for individual and multiple use of cosmetic product,

^■ a transparent and colorless part made of glass, associated with the peripheral wall:

 o is substantially inert to ultraviolet radiation,

 o is located in an area visible from the outside of the hollow body and to the right of a zone of the enclosure adapted to receive a cosmetic product so that it is visually perceptible from the outside of the hollow body, through the transparent and colorless part in glass,

 o is thick relative to the dimensions of the hollow body having a thickness of not less than 5 mm, in particular not less than 6 mm, more especially not less than 8 mm, so that the thickness is visually perceptible since the outside the hollow body,

^■ the coating, photochromic and resistant to ultraviolet radiation:

 o is integral with the peripheral wall, continuous, and located at least to the right of the transparent and colorless glass part,

 o is located in an area visible from the outside of the hollow body and to the right of the zone of the enclosure adapted to receive the cosmetic product,

 o and is chosen so that, unexposed to ultraviolet radiation it is transparent and colorless and that, exposed to ultraviolet radiation it is transparent and slightly colored.

Thus, when the hollow body is exposed to ultraviolet radiation from the outside, the thickness of the transparent and colorless glass portion remains visually perceptible from the outside and a cosmetic product in the chamber is protected from ultraviolet radiation by the photochromic coating and resistant to ultraviolet radiation, while being visually perceptible from the outside of the hollow body through the transparent and colorless glass portion and the photochromic coating and resistant to ultraviolet radiation then slightly colored, which constitutes a visible control of the protection of the cosmetic product.

According to the embodiments, the photochromic and ultraviolet-resistant coating forms a layer located on the side of the face of the transparent and colorless glass portion facing outwardly of the hollow body and / or the side of the face of the transparent portion and colorless glass turned towards the inside of the hollow body.

According to one embodiment, the photochromic coating layer and resistant to ultraviolet radiation is located on the side of the face turned towards the interior of the hollow body, in the enclosure, and physical separation means inert with respect to the cosmetic product and able to leaving the cosmetic product in the chamber visually perceptible from the outside of the hollow body are interposed between the photochromic coating layer and resistant to ultraviolet radiation and the area of the enclosure adapted to receive the cosmetic product, so that the cosmetic product is not in physical contact with the photochromic coating layer and resistant to ultraviolet radiation. According to the embodiments, the physical separation means are a coating or a container.

According to the embodiments, the photochromic coating and resistant to ultraviolet radiation is integral with the transparent and colorless portion of glass and in contact with it either directly or indirectly via at least one intermediate layer of binding capable of leaving the product cosmetic being in the enclosure visually perceptible from the outside of the hollow body. According to the embodiments, the transparent and colorless glass part is an integral part of the peripheral wall or is distinct from it but integral with it being located at the right of a transparent and colorless part of the side of its side facing the outside the hollow body.

According to the embodiments, the transparent and colorless portion made of glass constitutes all or a substantial part of the peripheral wall or, being distinct from the peripheral wall is integral with it to the right of a transparent and colorless part thereof.

According to one embodiment, the hollow body further comprises an opaque and ultraviolet-resistant monochrome portion, associated with the peripheral wall, being either an integral part of it or distinct from it but integral with it, the transparent and colorless portion of and the monochrome portion opaque and resistant to ultraviolet radiation being located offset from one another.

According to different possibilities, the transparent and colorless glass part and / or the opaque and ultraviolet-resistant monochrome part comprises an extension, respectively transparent and colorless in glass or monochrome opaque and resistant to ultraviolet radiation, situated respectively at the right of the monochrome part. opaque and resistant to ultraviolet radiation and / or transparent and colorless glass part.

According to various embodiments, the hollow body comprises an opaque and ultraviolet-resistant monochrome coating portion in the form of a coating layer situated on the side of the face of the peripheral wall facing outwards from the hollow body and / or the side of the face of the peripheral wall facing the inside of the hollow body.

In one embodiment, an opaque, ultraviolet-resistant, monochrome coating portion is located on the same or opposite side of the photochromic coating and is resistant to ultraviolet radiation.

According to one possibility, the transparent and colorless glass portion has an outline resulting from the formation of a resist having an outline formed in the coating layer of the opaque monochrome portion and resistant to ultraviolet radiation.

In one embodiment, the photochromic coating and resistant to ultraviolet radiation is a lacquer incorporating an ultraviolet-resistant additive and photochromic pigments.

According to a possible development, the hollow body further comprises an expressive and / or decorative visual structure, punctual, elongate or surface, by a color effect or transparency / translucency / opacity, either constant or evolving over time, such as an etching or a coating, integral with the transparent and colorless glass part or the photochromic coating and resistant to ultraviolet radiation.

In an advantageous embodiment, the hollow body is such that, in combination, the peripheral wall comprises, and in particular is constituted by, the transparent and colorless glass part and the photochromic and ultraviolet-radiation resistant coating forms a layer integral with the part transparent and colorless glass located on the side of the face of the peripheral wall and the transparent and colorless glass portion facing outwardly of the hollow body. According to a second aspect, the subject of the invention is a packaging for individual and multiple use of a cosmetic product sensitive to exposure to ultraviolet radiation, comprising a hollow container body such as has just been described, and closure and dispensing means cooperating with the opening opening of the container hollow body, selected from the cap-like means, dispensing cap, valve, nozzle, spray, leaving visible the transparent and colorless glass part.

Thus, when the package is exposed to ultraviolet radiation from the outside, the thickness of the transparent and colorless glass portion of the container hollow body remains visually perceptible from the outside of the package and a cosmetic product within the package. Container body cavity is UV-protected by photochromic and UV-resistant coating, while being visually perceptible from outside the packaging through the transparent and colorless glass portion and the photochromic and ultraviolet-resistant coating then slightly colored, which constitutes a visible control of the protection of the cosmetic product.

According to a third aspect, the subject of the invention is a packaging assembly for individual and multiple use, comprising a packaging as just described and an overwrap resistant to ultraviolet radiation, in particular opaque, such as a holster. cardboard or plastic material, in the interior space of which is disposed removably the packaging.

According to a fourth aspect, the subject of the invention is a cosmetic product packaged in a packaging for individual and multiple use, comprising a quantity of a fluid cosmetic product filling the chamber of the hollow container body with a packaging for individual and multiple use such as that it has been described and taking the form of its container.

Thus, when the conditioned cosmetic product is exposed to ultraviolet radiation from the outside, the thickness of the transparent and colorless glass portion remains visually perceptible from the outside of the packaging and the cosmetic product is protected from ultraviolet radiation by the coating photochromic and resistant to ultraviolet radiation, while being visually perceptible from the outside of the packaging through the transparent and colorless glass part and the photochromic coating and resistant to the then slightly colored ultraviolet radiation, which constitutes a visible witness of the protection of the product cosmetic.

According to a fifth aspect, the invention relates to a method for producing a hollow container body as described.

In this process:

^A container hollow body whose enclosure has a large dimension of between 3 cm and 20 cm and a volume of between 7 ml and 250 ml and which has a transparent and colorless glass part associated with the peripheral wall which is substantially inert to ultraviolet radiation, is located in an area visible from the outside of the hollow body and to the right of a zone of the enclosure adapted to receive a cosmetic product, is thick relative to the dimensions of the hollow body having a thickness of not less than 5 mm, in particular not less than 6 mm, especially not less than 8 mm,

^■ materials capable of providing a photochromic and ultraviolet-resistant coating are selected so that the unexposed to ultraviolet radiation the coating is transparent and colorless and exposed to ultraviolet radiation is transparent and slightly colored, ^■ and it sends a photochromic coating and resistant to ultraviolet radiation integral with the peripheral wall, continuous and at least located to the right of the transparent portion and colorless glass, in a visible area from outside the hollow body and at right of the zone of the enclosure adapted to receive the cosmetic product.

According to the embodiments, a photochromic coating and resistant to ultraviolet radiation in the form of a layer located on the side of the face of the transparent and colorless portion made of glass facing outwards from the hollow body and / or from the side of the face is produced. of the transparent and colorless part of glass turned towards the interior of the hollow body.

According to one embodiment, a photochromic and UV-resistant coating is produced in the form of a layer situated on the side of the face turned towards the interior of the hollow body, in the enclosure, and the physical separation means are interposed between the photochromic coating and resistant to ultraviolet radiation and the area of the enclosure adapted to receive the cosmetic product.

According to the embodiments, the photochromic coating is produced and resistant to ultraviolet radiation by spraying, immersion, screen printing, or the like.

According to one possibility, there are materials capable of producing an opaque and ultraviolet-resistant monochrome portion and a coating layer forming the opaque and ultraviolet-resistant portion associated with the peripheral wall.

According to one embodiment, in the layer of the monochrome portion that is opaque and resistant to ultraviolet radiation, a resist having a contour forming the outline of the transparent and colorless part made of glass is made, either at the same time as the coating layer of the monochrome portion is opaque and resistant to ultraviolet radiation is subsequently by a removal operation of the coating of the monochrome portion opaque and resistant to ultraviolet radiation.

According to one embodiment, there is provided a hollow container body whose peripheral wall comprises, and in particular consists of, the transparent and colorless glass part and is made a photochromic coating and resistant to ultraviolet radiation in the form of a layer integral with the transparent and colorless glass portion located on the side of the face of the peripheral wall and the transparent and colorless glass portion facing outwardly of the hollow body.

By virtue of the adage "that can as little as possible", such packaging can, of course, be implemented for a product that does not impose the same constraints and requirements as those of the cosmetic product under consideration.

Several possible embodiments of the invention will now be described with the aid of the drawings, it being clear that these drawings are diagrammatic and intended to understand the invention, but that what is shown is not limiting of the invention. invention, particularly with regard to visually perceptible aspects: - Figure 1 is a partial perspective view of a packaging according to the invention filled with a cosmetic product, comprising a hollow container body whose opening passage is visible, the shutter and dispensing means not being shown, the peripheral wall consisting of a transparent and colorless glass part, and further comprising a photochromic coating and resistant to ultraviolet radiation, integral with the peripheral wall, continuous, covering the wall in a visible area from outside the hollow body and to the right of the zone of the enclosure receiving the cosmetic product, here not exposed to ultraviolet radiation and transparent and colorless, the figure symbolically illustrating that the user perceives visually from the outside of the hollow body the cosmetic product and the thickness of the transparent and colorless glass peripheral wall.

 FIG. 2 is a view similar to FIG. 1, the packaging here including the sealing and dispensing means, symbolically represented, the packaging being here exposed to ultraviolet radiation from the outside, the figure symbolically illustrating that the user continues to perceive visually from the outside of the hollow body the cosmetic product and the thickness of the transparent peripheral wall, while the cosmetic product is protected from the ultraviolet radiation to which it is exposed and that the transparent coating and here slightly colored constitutes a visible witness that the cosmetic product is protected.

 FIG. 3 is a diagrammatic partial view, in cross-section, on a larger scale, illustrating an alternative embodiment of the invention with a photochromic coating and resistant to ultraviolet radiation attached to the face of the peripheral wall facing the outside.

 FIG. 4 is a view similar to FIG. 3, with a photochromic coating and resistant to ultraviolet radiation secured to the face of the peripheral wall facing the inside of the hollow body, located in the enclosure, physical separation means , here a coating, inert with respect to the cosmetic product and able to leave the cosmetic product in the chamber visually perceptible from the outside of the hollow body being interposed between the photochromic coating and resistant to ultraviolet radiation and the zone of the enclosure adapted to receive the cosmetic product, so that the cosmetic product is not in physical contact with the photochromic coating and resistant to ultraviolet radiation.

 - Figure 5 is a view similar to Figure 4, the physical separation means being here a separate container of the peripheral wall.

 FIG. 6 is a view similar to FIG. 3, in which, in addition to the transparent and colorless portion of glass, an opaque and ultraviolet-resistant monochrome portion is provided, the two parts being situated on the same side, in the same direction; the side turned outward.

 - Figure 7 is a view similar to Figure 6, in the case where the two parts are located on the two opposite sides.

 - Figure 8 is a view similar to Figure 2, in the case of a packaging further comprising a monochrome portion opaque and resistant to ultraviolet radiation, associated with the peripheral wall in which is formed an expressive visual structure and / or decorative .

 - Figure 9 is a schematic, partial, in cross section, on a larger scale, illustrating an alternative embodiment of the invention in the case where there is provided an expressive visual structure and / or decorative.

In the particular embodiment shown in FIGS. 1 and 2, a packaging 1 of cosmetic product according to the invention comprises, on the one hand, a rigid hollow container body 2 intended to be filled with a cosmetic product P sensitive to radiation. ultraviolet and which, for this reason must be protected from ultraviolet radiation (exposure to the sun or UV lamps ...), and, secondly, means 3 of filling and dispensing of the cosmetic product P, associated with hollow body 2, that is to say forming with it a structural assembly. In a typical embodiment, the cosmetic product P is a fluid care cream.

It is understood that the shape of the packaging 1 in the figures is illustrative and not limiting and that in the figures, the cosmetic product P is represented in a purely symbolic manner. The UV arrows illustrate ultraviolet radiation. The direction of these arrows and the radiation is in no way limiting. In particular, the direction of the ultraviolet radiation may have any angle of incidence with respect to the package 1. Packaging 1 fulfills the general requirements and constraints imposed by a cosmetic product packaging known to those skilled in the art.

The subject of the invention is both the packaging 1 when it is in the empty state, without the cosmetic product P, that the packaging 1 completely or partially fills the cosmetic product P.

In addition, the invention also relates to such a packaging 1 and an overwrap resistant to ultraviolet radiation and in particular opaque. This arrangement is particularly interesting when the packaging 1 is in the storage, transport or exhibition phase. The construction and characteristics of such an overpack are within the reach of those skilled in the art. It may be for example a cardboard or plastic case, in the interior space of which the packaging 1 is removably disposed.

The packaging 1 has a general axis AA, symmetry or pseudo-symmetry. In this case, the packaging 1 is shown with the vertical axis AA and the means 3 for closing and dispensing the cosmetic product P arranged upwards. But, it goes without saying that the packaging can be reversed or that the axis AA can take another position. The notion of "high" (or "superior"), like that of "low" (or "inferior") is therefore only relative and in no way limiting of the invention.

The hollow body 2 includes a rigid outer peripheral wall 4, having a face 6 facing outwards E and a face 7 facing inward I. The face 6 facing outwards E forms the outer limit of the hollow body 2.

By "inside" is meant what is situated in - or turned inward of - hollow body 2 and by "inside" is meant that which is out of - or facing inward from - body hollow 2.

According to embodiments, the surface of the face 6 and / or of the face 7 is at least partly substantially smooth and / or at least partly substantially non-smooth, the invention being applicable to the one as to the other case.

The peripheral wall 4, more particularly its face 7 facing inward I, defines an inner chamber or cavity 8 which is adapted to receive and be filled with the cosmetic product P, to contain and protect it. The cosmetic product P being fluid, such as creamy, it takes the form of its container, which may be the enclosure 8 or a container, such as the container 14b disposed in the enclosure 8, which will be discussed later. In all cases, the cosmetic product P comes against the face of its container facing inwardly I: face 7 of the peripheral wall 4 or face 17b of the container 14b.

The packaging 1 of cosmetic product is for individual and multiple use. By this is meant that it is intended for the use of a natural person for his personal needs and that the amount of cosmetic product P is sufficient for the user to make a number of uses. For this purpose, the enclosure 8 has a larger internal dimension - for example counted in the axial or transverse diametrical direction according to the shape of the hollow body 2 - which is between 3 cm and 20 cm and a volume which is between 7 ml and 250 ml. Such volume is adapted to receive the amount of cosmetic product P suitable for use.

In the embodiment considered, the peripheral wall 4 is thick relative to the dimensions of the hollow body 2. In most of the thickness of the peripheral wall 4 is not less than 5 mm, in particular not less than 6 mm, and more especially not less than 8 mm. This constructive arrangement does not exclude that in one or more parts (for example angles or edges), the thickness of the peripheral wall 4 is larger or smaller than the lower limits indicated above.

The peripheral wall 4 comprises a portion 10a forming a bottom, in particular on which is intended to rest the hollow body 2 when not in use, a side portion 10b forming the main face visible by the user and an upper portion 10c. The peripheral wall 4 accommodates a passage opening 9 towards the upper part 10c, intended initially to fill the chamber 8 of the hollow body 2 with the appropriate amount of cosmetic product P and, in use, to extract the cosmetic product P of the enclosure 8 successively, whenever this is desired by the user.

The peripheral wall 4, in particular its lateral part 10b, may have any desired geometric shape, regular or irregular, simple or tormented: prismatic or pseudo-prismatic, cylindrical of revolution or not or pseudo-cylindrical, pyramidal or pseudo-pyramidal, frustoconical or pseudo-frustoconical, ovoid, convex. It can also be an anthropomorphic, zoomorphic, or representative of an object, a symbol ..., or an ornamental form.

The means 3 for closing and dispensing the cosmetic product P are provided so as to cooperate with the passage opening 9 and they are mounted for this purpose on the upper part 10c, the passage opening 9 of which is adjacent, and particularly towards the outside of the peripheral wall 4.

According to one embodiment, the means 3 for sealing and dispensing form a cover. Depending on the case, this cover 3 is in one part or is in several parts. For example, the cover 3 may comprise a base and a cover or a fixed part and a moving part. Means 3 for sealing and dispensing, such as a hood, may be in the form of a shell molded of synthetic material. According to various possible embodiments, the cover 3 is mounted on the part 10c rigidly to form an indissociable whole, fixed or removable, with immobilization or with the possibility of displacement. For this purpose, the peripheral wall 4, in particular the portion 10c, and the cover 3 comprise appropriate complementary mounting means, such as locking means, press-fit means, snap-in means, screwing means, means for sliding or pivoting ... Such means are not shown but are within the reach of the skilled person. More generally, the means 3 for sealing and dispensing are chosen from the cap-like means, dispenser cap, valve, nozzle, spray, or the like.

A transparent and colorless glass part 11, inert to ultraviolet radiation, at least substantially inert, is associated with the peripheral wall 4. By "inert with ultraviolet radiation", it should be understood that ultraviolet radiation produces no visual change of the glass that remains transparent and colorless, at least does not produce a substantial change in visual appearance. By part 1 1 "associated" with the peripheral wall 4, it should be understood that the part 1 1, either constitutes all or at least a substantial part of the peripheral wall 4, in particular including its lateral part as it is represented on the figures, being structurally distinct from the peripheral wall 4, is nevertheless integral with it, this variant not being shown. In the latter case, it is expected that the portion 1 1 is secured to the peripheral wall 4 to the right of a transparent and colorless portion of the peripheral wall 4, which constitutes all or at least a substantial portion of the wall peripheral 4, in particular including its lateral part. In this way, the transparency and the absence of color of the part 1 1 are not affected, even though the part 1 1 is distinct from the peripheral wall 4. By "glass" is meant glass in the strict sense of the term or any material which would have qualities analogous from the mechanical and optical point of view in particular, with regard to the characteristics that the peripheral wall 4 must have.

The description is therefore made in the case of a portion 1 1 transparent and colorless which constitutes at least a substantial portion of the peripheral wall 4, including including its side portion 10b. In this case, the peripheral wall 4 is itself also transparent and colorless glass and inert to ultraviolet radiation. And the thickness of the transparent and colorless portion 1 1 is none other than the thickness of the peripheral wall 4. As it is, it is thick relative to the dimensions of the hollow body 2, having for the most part a thickness which is not less than 5 mm, in particular not less than 6 mm, and more especially not less than 8 mm. Like the peripheral wall 4, the transparent and colorless portion 11 1 has an outward facing face 6 which forms the outer limit of the hollow body 2 and a face 7 facing inwardly.

By "a part 1 1" means a single part or not, continuous or not.

In other embodiments (FIGS. 6 and 7), it is envisaged that the hollow body 2 comprises, in addition to the transparent and colorless portion 11, a monochrome portion 12 that is opaque and resistant (or barrier) to the ultraviolet radiation associated with the peripheral wall. 4. The monochrome portion 12 opaque and resistant to ultraviolet radiation may be integral part of the peripheral wall 4 which it forms a part. It may be distinct from the peripheral wall 4 but integral with it. For example, the transparent and colorless portion 11 may consist of at least part of the peripheral wall 4 and the opaque and ultraviolet-resistant monochrome portion 12 may be constituted by a coating of the peripheral wall 4. The portion 1 1 and the portion 12 are then located relatively so as to be offset from one another, the portion 11 is by definition transparent and colorless.

In the embodiment of FIG. 6, the opaque and ultraviolet-resistant monochrome portion 12 is a coating layer situated on the side of the face 6 facing outwardly E and, being discontinuous, thus leaving the formation of the part 1 1 transparent and colorless in its discontinuity. In the embodiment of FIG. 7, the opaque and ultraviolet-resistant monochrome portion 12 is a coating layer situated on the side of the face 7 facing towards the inside I. As previously, being discontinuous, it thus leaves the formation of the part 1 1 transparent and colorless in its discontinuity. In one and the other of these embodiments, the transparent and colorless portion 11 1 has an extension constituted by the peripheral wall 4 located at the right of the monochrome portion 12 opaque and resistant to ultraviolet radiation. The opposite is conceivable, the monochrome portion 12 opaque and resistant to ultraviolet radiation having an extension located at the right of the portion 1 1 transparent and colorless. Where appropriate, both possibilities can be combined. Finally, depending on the case, the opaque and ultraviolet-resistant monochrome portion 12 is situated on the same or opposite side as the photochromic and ultraviolet-resistant coating 13.

By "right of" is meant that is located at least in relation to a direction at least substantially normal to the considered surface or along an axis of ultraviolet radiation or along a line of sight of a user.

By "part 12" is meant a single part or not, continuous or not. In one embodiment, the monochrome portion 12 opaque and resistant to ultraviolet radiation is shaped - or is a - layer. In other embodiments, without forming or constituting stricto sensu a layer, the portion 12 can be likened to a layer.

The transparent and colorless portion 11 is located in an area visible from the outside E of the hollow body 2 (this eye perception is symbolically represented by an eye, the direction of the axis relative to the package 1 may be arbitrary). On the other hand, it is located at the right of a zone of the enclosure 8 capable of receiving the cosmetic product P. Thus, is the cosmetic product P visible, at least visually perceptible, from the outside E of the hollow body 2, through the part 1 1. Due to the transparency and lack of color of the part 1 1, the cosmetic product P is visually perceptible with its own color, which is in line with the expectation of the user. Of course, it should be considered that achievements in accordance with what is described except that part 1 1 would be very slightly colored or it would not be totally transparent but almost completely transparent or with very low translucency would fall within the scope of protection of the invention.

Indeed, it is known that clear glass always has a slight transmission color, inherent in the composition of the glass.

The characteristics of the transparent and colorless part 1 1, made of glass, previously exposed, lead to the thickness of the part 1 1 being visually perceptible from the outside E of the hollow body 2, especially since the cosmetic product P is most often non-transparent, for example being colored - including white or a light color close - or having a visually perceptible texture.

Several embodiments can be envisaged with regard to the realization of the transparent and colorless part 1 1, glass, or at least the achievement of the outline of the part 1 1.

The transparent and colorless portion 11 may consist of all or a substantial part of the peripheral wall 4, in particular its lateral portion 10b, as in the case of FIGS. 3, 4 and 5. In these embodiments, it is possible that the part 1 1 has no contour limiting it, being closed on itself. It is also possible that there is no monochrome part 12 opaque and resistant to ultraviolet radiation or on the contrary, it is expected that there is such a part 12.

In other embodiments, as in the case of FIGS. 6 and 7, the contour 11 of the transparent and colorless portion 11 results from the formation of a reserve 12a, of contour 12b (coinciding with the contour 11a). , formed in the monochrome portion 12 opaque and resistant to ultraviolet radiation, including the coating layer that it forms. In a variant, the reserve 12a is produced at the same time as the coating layer of the portion 12 is made. In this case, the process of producing the coating layer of the portion 12 is provided to leave the reserve 12a free. In another variant, the reserve 12a is produced after the completion of the coating layer of the portion 12, and this by an operation of ablating the coating layer of the monochrome portion 12 opaque and resistant to ultraviolet radiation. Such an ablation operation can be performed by means of a suitable laser providing a suitable laser beam. It is understood that the laser and the materials forming part of the hollow body 2 are chosen here so that the laser removes the coating from the coating layer of the part 12, as desired, without affecting the physical integrity of the other parts of the hollow body 2. The hollow body 2 also comprises a light-sensitive coating 13 which is a photochromic coating and resistant to ultraviolet radiation.

The photochromic coating 13 and resistant to ultraviolet radiation is permanently attached to the peripheral wall 4. It is continuous and located at least in line with the portion 1 1 transparent and colorless. On the other hand, it is located in an area visible from the outside E of the hollow body 2 and at least right of the zone 8a of the enclosure 8 adapted to receive the cosmetic product P, if indeed the cosmetic product P do not directly fill the enclosure 8.

The photochromic and ultraviolet-resistant coating 13 is specially and specifically selected so that, in the first place, when not exposed to ultraviolet radiation, it is transparent and colorless or at least substantially transparent and colorless and not stop the light radiation or at least not stop it substantially. Secondly, when exposed to ultraviolet radiation, it is transparent and slightly colored, without being opaque and stops, absorbs ultraviolet radiation and forms a barrier therewith. These are two distinct and combined functions that fills the coating 13: the photochromic function and the ultraviolet radiation barrier function. Of course, it should be considered that embodiments in accordance with what is described except that the photochromic coating and resistant to ultraviolet radiation would be very slightly colored instead of transparent or that it would not be totally transparent but almost completely transparent or with very low translucency would fall within the scope of protection of the invention. The representation of the coating 13 in Figures 2 and 8 while it is slightly colored, is illustrative and not limiting.

It goes without saying that the photochromic function and the ultraviolet radiation barrier function are only relative. On the one hand, one and the other can be implemented only from a certain threshold of light and ultraviolet radiation, respectively. On the other hand, the barrier function can not be complete, a part, considered to be acceptable, of the ultraviolet radiation coming from the outside E that can pass through the coating 13.

Thus, and firstly, is the cosmetic product P visible, at least visually perceptible, from the outside E of the hollow body 2, through the photochromic coating 13 and resistant to ultraviolet radiation and the transparent part 1 1 and colorless, whether or not there is ultraviolet radiation.

Secondly, the cosmetic product P receives any light radiation coming from outside E, through the photochromic coating 13 and resistant to ultraviolet radiation and the portion 1 1 transparent and colorless. Insofar as, as provided in FIG. 2, the radiation is ultraviolet-sun radiation, UV lamps, etc. (symbolized by the UV arrows in the figures), the cosmetic product P is thus protected from it. - at least to a certain extent appropriate - by the coating 13 which is precisely resistant - at least to a certain degree - to the ultraviolet radiation 13 and stops - at least partly - the ultraviolet radiation from the outside E which, therefore, does not damage the cosmetic product P.

Third, the photochromic coating 13 and resistant to ultraviolet radiation remaining transparent and only slightly colored when exposed to ultraviolet radiation, the thickness of the portion 11 which remains transparent and colorless, remains visually perceptible by the user, as provided in Figure 2. Finally, fourth, the photochromic coating 13 and resistant to ultraviolet radiation slightly colored by ultraviolet radiation being visually perceptible from the outside E by the user, it constitutes a visible control of the protection of the cosmetic product P, as it is provided in Figure 2.

These results are obtained with a hollow body 2 whose peripheral wall 4 may be glass, without the need for a photochromic glass barrier to ultraviolet radiation in the mass.

In one embodiment, the photochromic and ultraviolet-resistant coating 13 is in the form of - or constitutes - a layer. In other embodiments, the photochromic coating 13 and resistant to ultraviolet radiation, without forming or constituting stricto sensu a layer, it can be likened to a layer. In all cases, the coating 13 is continuous, added to its support, for example the transparent and colorless wall January 1 and has a certain thickness, although it is usually very low, for example of the order of 20 microns as a result of the presence of a material or materials having photochromic and resistance or ultraviolet light absorption or barrier properties.

In the embodiment of FIG. 3, the photochromic coating layer 13, which is resistant to ultraviolet radiation, is situated on the side of the face 6 of the transparent and colorless portion 11 facing outwardly E and, more particularly, is integral with the face 6.

In the embodiment of FIGS. 4 and 5, the photochromic coating layer 13, which is resistant to ultraviolet radiation, is located on the side of the face 7 of the transparent and colorless portion 11 facing towards the inside I and, more particularly, is integral with the face 7.

According to various possible embodiments, the photochromic coating layer 13 and resistant to ultraviolet radiation is integral with the transparent and colorless portion 11 1 and in contact with it either directly, as shown in Figures 3 to 5, or indirectly by intermediate of at least one intermediate bonding layer capable, being transparent and colorless or substantially transparent and colorless, to leave the cosmetic product P in the chamber 8 visually perceptible from the outside E, respectively to leave the part 11 transparent and colorless visually perceptible from the outside E. According to another embodiment, especially adapted to the case where the peripheral wall 4 is substantially completely transparent and colorless, made of glass, so as to constitute the part 1 1, the photochromic coating 13 and resistant to ultraviolet radiation covers all or substantially all otality of the face 6, 7, or for example, especially the side portion 10b.

According to a particularly advantageous embodiment, the peripheral wall 4 comprises, and in particular consists of, the transparent and colorless glass part 11, and the photochromic and ultraviolet-resistant coating 13 forms a layer integral with the transparent part 1 1 and colorless on the side of the face 6 of the peripheral wall 4 and the portion 1 1 transparent and colorless outwardly E of the hollow body 2.

Reference is now made more particularly to FIGS. 4 and 5, in which the photochromic and ultraviolet-resistant coating layer 13 is situated on the side of the face 7 of the transparent and colorless portion 11 turned towards the inside, and more particularly is secured to the face 7. In this case, there are provided means 14 for physical separation, inert with respect to the cosmetic product P and able to leave the cosmetic product P in the chamber 8 visually perceptible from the outside E of the hollow body 2, interposed between the photochromic coating layer 13 and resistant to ultraviolet radiation and the zone 8a of the enclosure 8 able to receive the cosmetic product P. With this arrangement, the cosmetic product P is not in physical contact with the photochromic coating layer 13 and resistant to ultraviolet radiation.

In the case of FIG. 4, these physical separation means 14 are a coating 14a associated with the face 15 of the photochromic coating layer 13 and resistant to the inwardly directed ultraviolet radiation I. This coating 14a is either an integral part of the photochromic coating layer 13 and resistant to ultraviolet radiation is reported on its face 15 facing inward I. For example, the coating 14a forms a layer. The cosmetic product P is then able to be in contact with the face 17a turned towards the inside I of the coating 14a, without prejudice to this coating 14a and for the cosmetic product P.

In the case of FIG. 5, these physical separation means 14 are a container 14b, such as an attached flexible pouch, distinct from the peripheral wall 4 and from the transparent and colorless portion 11, placed in the enclosure 8 and adapted to contain the cosmetic product P which can come into contact with the face 17b turned towards the inside I of the container 14b, without prejudice for this container 14b and for the cosmetic product P.

Of course, it is possible to provide physical separation means 14 in the form of a coating or a container, even if the photochromic coating layer 13 which is resistant to ultraviolet radiation is situated on the side of the face 6 of the transparent portion 11. colorless outward facing E.

In these embodiments, the means 14 of physical separation - coating 14a or container 14b - are transparent and colorless if it is desired that they do not affect the visual perception of the cosmetic product P. Moreover, that one must consider that embodiments in accordance with what is described except that the means 14 physical separation - coating 14a or container 14b - would be very slightly colored or they would not be totally transparent but almost completely transparent or with a very low translucency would fall within the scope of protection of the invention. Finally, it is possible to envisage that the means 14 for physical separation - coating 14a or container 14b -, while leaving the cosmetic product P in the enclosure 8 visually perceptible from the outside E of the hollow body 2, provides a visual effect, for example, the color that it presents.

The photochromic coating 13 and resistant to ultraviolet radiation is secured to the transparent and colorless portion 1 1, respectively to the peripheral wall 4, by a method such as spraying, immersion, screen printing, or by a similar method.

In one possible embodiment given by way of example, the photochromic and UV-resistant coating 13 comprises:

 a polyurethane-lacquered resin, such as a two-component thermally-drying acrylic, forming a base or matrix such as a lacquer

 a hardener, such as an aliphatic polyisocyanate

 a solvent, such as a diluent comprising toluene

 an anti-ultraviolet or ultraviolet radiation absorbing additive or a barrier to such radiation

- a photochromic pigment.

According to the needs and in particular the importance of the photochromic function and the ultraviolet radiation barrier function, the dose of the additive and the dose of the pigment are more or less high or low. For example, the dose of photochromic pigment may be between 0.60% or more and 0.30% or less. In such a composition, of the order of half is constituted by the resin-varnish polyurethane.

The hardener intervenes for about 15%.

 The solvent is involved in the order of 25%.

 The anti-ultraviolet additive intervenes for the order of less than 10%.

According to the embodiments, the photochromic coating 13 resistant to ultraviolet radiation consists of a single layer or comprises several superposed layers, identical or otherwise, particularly as regards the intensity of the desired ultraviolet radiation barrier effect and / or the desired color.

In the embodiment of Figure 8 corresponding to a development of the invention, the hollow body 2 further comprises, also, a structure 18 visually perceptible from the outside E. This structure 18 is expressive and / or decorative, punctual, elongated or surface. It is obtained by a color effect or transparency / translucency / opacity. It is constant in time or evolving over time. Such a structure 18 is for example an etching or a coating integral directly or indirectly with the transparent and colorless glass portion 11 or the photochromic portion 12 and resistant to ultraviolet radiation. Such a structure 18 is for example located on the side of the face 6 facing outwards E or the side of face 7 facing inward I.

By "visual structure" is meant a form identified visually perceptible from the outside E by the user. The notion of form must here be understood in the broadest sense and also include the effects. On the other hand, the visual structure 18 is understood to be either in itself such a shape or as constituting such a shape in combination with its periphery or the appearance of its periphery, for example a transparency or translucency with respect to a colored periphery.

The shape of such a visual structure 18 may be aimed at the expression for example of the nature, of the origin, of the destination, of the use of the cosmetic product P, of its mark, of the price, of its sensitivity. to ultraviolet radiation ... and / or ornament for example a color, a combination of colors, transparency or opacity ...

Such a visual structure 18 is adapted to the shape of the peripheral wall 4, or even more or less integrated with it. For example, it can form the eyes of a face or a head in the case of a peripheral wall 4 itself anthropomorphic or zoomorphic.

When a visual structure is provided, the effects described above are found: when the hollow body 2 is exposed to ultraviolet radiation from the outside E, the thickness of the transparent and colorless portion 11 remains visually perceptible since the outside E, a cosmetic product P in the enclosure 8 is protected from ultraviolet radiation by the photochromic coating 13 and resistant to ultraviolet radiation. It is visually perceptible from the outside E through the transparent and colorless portion 11 and the photochromic coating 13 and resistant to ultraviolet radiation. And the photochromic coating 13 and resistant to ultraviolet radiation is a visible control of the protection of the cosmetic product P.

In one embodiment, more particularly illustrated in FIG. 8, the visual structure 18 is in the form of a coating layer constituted by the photochromic coating layer 13 and resistant to ultraviolet radiation, a resist 12a being provided in the monochrome portion 12 opaque and resistant ultraviolet radiation. The visual structure 18 is then with a visual effect that changes over time, as a function of ultraviolet radiation, from transparency in the absence of such ultraviolet to slightly colored radiation in the case of ultraviolet radiation.

In another embodiment, more specifically illustrated in FIG. 9, the visual structure 18 is in the form of a coating layer consisting of a coating layer of an opaque and ultraviolet-resistant part 12 monochrome, interposed for example between the face of the photochromic coating layer 13 and the face 6, 7 of the peripheral wall of which it is integral, for example the face 7 turned towards the inside I. The visual structure 18 is then at constant effect in all circumstances, in the presence or in the the absence of ultraviolet radiation.

These achievements are only exemplary and not limiting, other achievements that can be envisaged. For example, it is possible to envision that the visual structure 18 is associated with visual structure activation control means 18 responsive to an activation command. According to an exemplary possibility given by way of example, the visual structure 18 can be formed from a thermochromic coating, the activation control means ensuring a temperature rise of the thermochromic coating, such as an electrical resistance coupled to a power supply. electric.

By "a visual structure 18" is meant a unique visual structure or not, continuous or not. If necessary, it can be provided several visual structures of the same nature or of different natures.

It is understood that in the packaging 1, the means 3 for sealing and dispensing leave visible the transparent and colorless part 1 1 glass, or at least the usable part and used part 1 1. Thus, when the packaging 1 is exposed to ultraviolet radiation from the outside E, the thickness of the transparent and colorless glass portion 1 1 remains visually perceptible from the outside E of the packaging 1 and a cosmetic product P being in the enclosure 8 is protected from ultraviolet radiation by the photochromic coating 13 and resistant to ultraviolet radiation, while being visually perceptible from the outside E of the package 1 through the transparent and colorless glass portion 11 1 and the photochromic coating 13 and resistant to ultraviolet radiation then slightly colored, which also constitutes a visible control of the protection of the cosmetic product P.

The invention also relates to a sensitive cosmetic product P packaged in a package 1 as described. The invention then consists of a suitable quantity of cosmetic product P filling the chamber 8 of the container hollow body 2 of the packaging 1. As this result of the preceding statement, when the cosmetic product P thus conditioned is exposed to ultraviolet radiation from the outside E of the packaging 1, the thickness of the transparent and colorless glass portion 11 remains visually perceptible from the outside E and the cosmetic product P is protected from ultraviolet radiation by the photochromic coating 13 and resistant to ultraviolet radiation, while being visually perceptible from the outside E through the transparent and colorless glass portion 11 and the photochromic coating 13 and resistant to ultraviolet radiation then slightly colored, which thus constitutes a visible control of the protection of the cosmetic product P.

The invention also relates to the method for producing a hollow body 2 as previously described. In this process, there is a hollow container body 2 whose enclosure 8 has the size and volume indicated above, and which comprises a transparent and colorless portion 1 1 glass, associated with the peripheral wall 4 which is substantially inert to ultraviolet radiation, which is located in an area visible from the outside E of the hollow body 2 and to the right of a zone 8a of the enclosure 8 adapted to receive a cosmetic product P, is thick relative to the dimensions of the hollow body 2 having a thickness of not less than 5 mm, in particular not less than 6 mm, especially not less than 8 mm.

In addition, there are materials capable of producing a photochromic coating and resistant to ultraviolet radiation chosen so that, unexposed to ultraviolet radiation coating is transparent and colorless or at least substantially transparent and colorless and that exposed to ultraviolet radiation it be transparent and slightly colored.

Then, a photochromic coating 13 resistant to ultraviolet radiation is made integral with the continuous peripheral wall 4 and located at least in line with the transparent and colorless portion 11, in an area visible from the outside E of the hollow body 2 and to the right of the zone 8a of the enclosure 8 adapted to receive the cosmetic product P.

Depending on the case, a photochromic and UV-resistant coating 13 is produced in the form of a layer on the side of the face 6 of the transparent and colorless glass portion 11, respectively of the peripheral wall 4, turned towards the outside E the hollow body 2 and / or the side of the face 7 of the transparent and colorless glass part 1 1, respectively of the peripheral wall 4, turned towards the inside I of the hollow body 2.

Depending on the case, a photochromic and ultraviolet-resistant coating 13 is produced in the form of a layer situated on the side of the face 7, in the enclosure 8, and the means 14 for physical separation are interposed between the coating 13 photochromic and resistant to ultraviolet radiation and the zone 8a of the enclosure 8 adapted to receive the cosmetic product.

Depending on the case, the photochromic coating 13 is made and resistant to ultraviolet radiation by spraying, immersion, screen printing, or the like.

Depending on the case, materials are also available capable of producing a portion 12 of monochrome opaque and resistant to ultraviolet radiation and is made with these materials a coating layer constituting the portion 12 which is associated with the peripheral wall 4.

According to one possibility, in the monochrome coating layer 12 which is opaque and resistant to the ultraviolet radiation in question, a resist 12a having an outline 12b forming the outline 11a of the transparent and colorless part 1 1 made of glass is produced. In a variant of the method, the reserve 12a is produced at the same time as the coating layer of the portion 12 is produced. In another variant of the process, the reserve 12a is produced after the completion of the coating layer of the part 12, by an ablation operation, in particular by means of a suitable laser providing a suitable laser beam.

According to a particularly advantageous embodiment of the method, there is a hollow body 2 whose peripheral wall 4 comprises, and in particular consists of, the transparent and colorless glass part 1 1 and a photochromic coating 13 is produced and resistant to ultraviolet radiation in the form of a layer integral with the transparent and colorless glass part 1 1 situated on the side of the face 6 of the peripheral wall 4 and the transparent and colorless part 1 1 made of outwardly facing glass E of the hollow body 2.

Claims

Container hollow body (2) comprising a rigid peripheral wall (4) delimiting an enclosure (8) and having a passage opening (9), and a coating (13) sensitive to light, characterized in that: ^■ the enclosure (8) has a large dimension of between 3 cm and 20 cm and a volume of between 7 ml and 250 ml, so as to be specially adapted to the constitution of a packaging (1) for individual and multiple use cosmetic product, ^■ a portion (1 1) transparent and colorless glass, associated with the peripheral wall (4):  o is substantially inert to ultraviolet radiation,  o is situated in an area visible from the outside of the hollow body (2) and at the right of a zone (8a) of the enclosure (8) able to receive a cosmetic product so that it is visually perceptible since the outside of the hollow body (2), through the part (1 1),  o is thick relative to the dimensions of the hollow body (2) having a thickness of not less than 5 mm, in particular not less than 6 mm, more especially not less than 8 mm, so that the thickness is visually noticeable from outside the hollow body (2), ^■ the coating (13), photochromic and resistant to ultraviolet radiation:  o is integral with the peripheral wall (4), continuous, and located at least to the right of the portion (1 1) transparent and colorless glass,  o is situated in an area visible from the outside of the hollow body (2) and in line with the zone (8a) of the enclosure (8) able to receive the cosmetic product,  o is chosen so that, unexposed to ultraviolet radiation, it is transparent and colorless and, exposed to ultraviolet radiation, is transparent and slightly colored, so that when the hollow body (2) is exposed to ultraviolet radiation from the outside, the thickness of the transparent and colorless glass portion (1 1) remains visually perceptible from the outside and a cosmetic product in the enclosure (8) is protected from ultraviolet radiation by the photochromic coating (13) and resistant to ultraviolet radiation, while being visually perceptible from outside the hollow body (2) through the portion (1 1) transparent and colorless glass and the coating (13) photochromic and resistant to ultraviolet radiation then slightly colored, which constitutes a visible control of the protection of the cosmetic product. 2. hollow container body (2) according to claim 1, characterized in that it comprises a coating (13) photochromic and resistant to ultraviolet radiation forming a layer on the side of the face (6) of the part (1). 1) transparent and colorless glass turned towards the outside of the hollow body (2) and / or the side of the face (7) of the portion (1 1) transparent and colorless glass turned towards the inside of the hollow body ( 2). Container hollow body (2) according to Claim 2, characterized in that the photochromic and ultraviolet-resistant coating layer (13) is situated on the side of the face (7) in the enclosure (8), physical separating means (14) inert with respect to the cosmetic product and able to leave the cosmetic product in the enclosure (8) visually perceptible from the outside of the hollow body (2) being interposed between the coating layer ( 13) photochromic and resistant to ultraviolet radiation and the zone (8a) of the enclosure (8) adapted to receive the cosmetic product, so that the cosmetic product is not in physical contact with the photochromic coating layer (13) and resistant to ultraviolet radiation. Container hollow body (2) according to claim 3, characterized in that the physical separation means (14) is a coating (14a) associated with the face (15) of the photochromic coating layer (13) and resistant to ultraviolet radiation facing the interior of the hollow body (2), said coating (14a) being an integral part of the coating layer (13) photochromic and resistant to ultraviolet radiation is reported on it. Container hollow body (2) according to claim 3, characterized in that the physical separation means (14) is a container (14b), such as a flexible bag, distinct from the peripheral wall (4) and the portion (1 1) transparent and colorless glass, placed in the enclosure (8), able to contain the cosmetic product. 6. hollow container body (2) according to any one of claims 1 to 5, characterized in that the coating (13) photochromic and resistant to ultraviolet radiation is integral with the portion (1 1) transparent and colorless glass and in contact with it either directly or indirectly via at least one intermediate bonding layer capable of leaving the cosmetic product in the enclosure (8) visually perceptible from outside the hollow body (2). 7. hollow container body (2) according to any one of claims 1 to 6, characterized in that the portion (1 1) transparent and colorless glass is an integral part of the peripheral wall (4) to constitute a part or all of it is distinct from the peripheral wall (4) but integral with it being situated in line with a transparent and colorless part of the peripheral wall (4) on the side of its face (6) facing the outside the hollow body (2). Container hollow body (2) according to claim 7, characterized in that the transparent and colorless glass part (1 1) constitutes all or at least a substantial part of the peripheral wall (4), including including its lateral portion (10b) or, being distinct from the peripheral wall (4) is integral with it to the right of a transparent and colorless portion of the peripheral wall (4) which constitutes all or at least one substantial part of the peripheral wall (4), in particular including its lateral part (10b). 9. hollow container body (2) according to any one of claims 1 to 8, characterized in that it further comprises a portion (12) monochrome opaque and resistant to ultraviolet radiation associated with the peripheral wall (4). , being either part of or separate from it but integral with it, such as a coating, the transparent and colorless glass part (1 1) and the ultraviolet-resistant, opaque, monochrome part (12) being located offset from each other. Container hollow body (2) according to claim 9, characterized in that the transparent and colorless glass part (1 1) and / or the ultraviolet-resistant, opaque, monochrome part (12) has an extension, respectively transparent. and colorless glass or monochrome opaque and resistant to ultraviolet radiation, located respectively in line with the portion (12) monochrome opaque and resistant to ultraviolet radiation and / or portion (1 1) transparent and colorless glass. 1 1. hollow container body (2) according to any one of claims 9 and 10, characterized in that it comprises a portion (12) monochrome coating opaque and resistant to ultraviolet radiation in the form of a layer coating surface on the side of the face (6) of the peripheral wall (4) facing the outside of the hollow body (2) and / or the side of the face (7) of the peripheral wall (4) facing the inside the hollow body (2). Container hollow body (2) according to any one of claims 9 to 11, characterized in that it comprises a portion (12) of monochrome coating opaque and resistant to ultraviolet radiation which is located on the same side the opposite side of the photochromic coating (13) and resistant to ultraviolet radiation. Container hollow body (2) according to any one of claims 1 1 and 12, characterized in that the transparent and colorless glass part (1 1) has a contour (11 a) which results from the formation of a resist (12a), having a contour (12b), formed in the coating layer of the opaque monochrome portion (12) and resistant to ultraviolet radiation. 14. hollow container body (2) according to any one of claims 1 to 13, characterized in that the coating (13) photochromic and resistant to ultraviolet radiation is a lacquer incorporating an additive resistant to ultraviolet radiation and photochromic pigments. 15. hollow container body (2) according to any one of claims 1 to 14, characterized in that the coating (13) photochromic and resistant to ultraviolet radiation has a thickness of about 20 microns. 16. hollow container body (2) according to any one of claims 1 to 15, characterized in that it further comprises a visual structure (18) expressive and / or decorative, punctual, elongate or surface, by an effect color or transparency / translucency / opacity, either constant or changing over time, such as an etching or a coating, integral with the portion (1 1) transparent and colorless glass or coating (13) photochromic and resistant to ultraviolet radiation. Container hollow body (2) according to any one of claims 1 to 16, characterized in that, in combination, the peripheral wall (4) comprises, and in particular consists of, the part (1 1). transparent and colorless glass and the coating (13) photochromic and resistant to ultraviolet radiation forms a layer integral with the portion (1 1) transparent and colorless glass located on the side of the face (6) of the peripheral wall (4) and part (1 1) transparent and colorless glass facing outwardly of the hollow body (2). 18. Packaging (1) for individual and multiple use of a cosmetic product sensitive to ultraviolet radiation, comprising a hollow container body (2) according to any one of claims 1 to 17 and means (3). ) of shutter and distribution cooperating with the opening (9) of the hollow container body (2), selected from the cap-like means, dispenser cap, valve, nozzle, spray, leaving visible the portion (1 1 ) transparent and colorless glass, so that, when the package (1) is exposed to ultraviolet radiation from the outside, the thickness of the transparent and colorless glass part (1 1) of the container hollow body (2) ) remains visually perceptible from outside the packaging (1) and a cosmetic product in the enclosure (8) of the hollow container body (2) is protected from ultraviolet radiation by the coating (13) photochromic and resistant radiation u while being visually perceptible from outside the package (1) through the transparent and colorless portion (1 1) of glass and the photochromic and ultraviolet-resistant (13) coating then lightly colored, which constitutes a visible control of the protection of the cosmetic product. 19. A packaging unit for individual and multiple use, comprising a packaging (1) according to claim 18 and an overwrap resistant to ultraviolet radiation, particularly opaque, such as a holster. cardboard or plastic material, in the interior space of which is disposed removably the packaging (1). 20. Cosmetic product packaged in a packaging (1) for individual use, comprising a quantity of fluid cosmetic product filling the chamber (8) of the container hollow body (2) of a packaging (1) for individual and multiple use according to claim 18 and taking the form of its container, such as the enclosure (8) or a container (14b) disposed in the enclosure (8), so that when the cosmetic product thus conditioned is exposed to ultraviolet radiation from the outside, the thickness of the transparent and colorless glass part (1 1) remains visually perceptible from the outside of the packaging (1) and that the cosmetic product is protected from ultraviolet radiation by the photochromic coating (13) and resistant to ultraviolet radiation, while being visually perceptible from outside the package through the transparent and colorless glass portion (11) and the photochromic coating (13); resistant to ultraviolet radiation then slightly colored, which constitutes a visible control of the protection of the cosmetic product. 21. A process for producing a hollow container body (2) according to any one of claims 1 to 17, wherein: ^■ it has a hollow container body (2), the enclosure (8) has a dimension of between 3 cm and 20 cm and a volume of between 7 and 250 ml and having a portion (1 1) transparent and colorless glass associated with the rigid peripheral wall (4), which is substantially inert to ultraviolet radiation, is located in an area visible from the outside of the hollow body (2) and to the right of a zone ( 8a) of the enclosure (8) adapted to receive a cosmetic product, is thick relative to the dimensions of the hollow body (2) having a thickness of not less than 5 mm, in particular not less than 6 mm, more especially not less than 8 mm, ^■ materials capable of providing a photochromic and ultraviolet-resistant coating are selected so that the unexposed to ultraviolet radiation the coating is transparent and colorless and exposed to ultraviolet radiation is transparent and slightly colored, ^■ and there is provided a coating (13) and photochromic resistant integral ultraviolet radiation of the peripheral wall (4), continuous and at least located to the right of the part (11) transparent and colorless glass, in a visible area from the outside of the hollow body (2) and to the right of the zone (8a) of the enclosure (8) adapted to receive the cosmetic product. 22. The method as claimed in claim 21, characterized in that a photochromic and ultraviolet-resistant coating (13) is produced in the form of a layer situated on the side of the face (6) of the transparent portion (1 1). colorless glass facing outwardly of the hollow body (2) and / or the side of the face (7) of the portion (1 1) transparent and colorless glass turned towards the inside of the hollow body (2). 23. Process according to claim 22, characterized in that a photochromic coating (13) is produced which is resistant to ultraviolet radiation in the form of a layer situated on the side of the face (7), in the enclosure (8), and the physical separation means (14) are interposed between the photochromic coating and resistant to ultraviolet radiation and the zone of the enclosure (8) capable of receiving the cosmetic product. 24. A method according to any one of claims 21 to 23, wherein the photochromic coating and resistant to ultraviolet radiation is carried out by spraying, dipping, screen printing, or the like. 25. A method according to any one of claims 21 to 24, wherein there are materials capable of producing a monochrome portion opaque and resistant to ultraviolet radiation and is formed a coating layer forming the portion (12) opaque and resistant ultraviolet radiation, associated with the peripheral wall (4). 26. The method of claim 25, characterized in that is carried in the layer of the portion (12) monochrome opaque and resistant to ultraviolet radiation a reserve (12a) having a contour (12b) forming the contour (11a). ) of the portion (1 1) transparent and colorless glass, either at the same time or is performed the coating layer of the portion (12) monochrome opaque and resistant to ultraviolet radiation is subsequently by a removal operation of the coating of the part (12) monochrome opaque and resistant to ultraviolet radiation. 27. Method according to any one of claims 21 to 26, characterized in that one has a hollow container body (2) whose peripheral wall (4) comprises, and in particular is constituted by, the part (11) transparent and colorless glass and is carried a coating (13) photochromic and resistant to ultraviolet radiation in the form of a layer integral with the portion (1 1) transparent and colorless glass located on the side of the face (6) the peripheral wall (4) and the portion (1 1) transparent and colorless glass facing outwardly of the hollow body (2).