EP0310471A1 - Method for compacting a powder-based cosmetic preparation - Google Patents

Method for compacting a powder-based cosmetic preparation Download PDF

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Publication number
EP0310471A1
EP0310471A1 EP88402273A EP88402273A EP0310471A1 EP 0310471 A1 EP0310471 A1 EP 0310471A1 EP 88402273 A EP88402273 A EP 88402273A EP 88402273 A EP88402273 A EP 88402273A EP 0310471 A1 EP0310471 A1 EP 0310471A1
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EP
European Patent Office
Prior art keywords
cup
compact
preparation
cosmetic preparation
compaction
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Granted
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EP88402273A
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German (de)
French (fr)
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EP0310471B1 (en
Inventor
Jean-Louis Gueret
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LOreal SA
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LOreal SA
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    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D33/00—Containers or accessories specially adapted for handling powdery toiletry or cosmetic substances
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B1/20—Reducing volume of filled material
    • B65B1/24—Reducing volume of filled material by mechanical compression

Definitions

  • the present invention relates to the field of cosmetic preparations constituted by compressed dry powders or by mixtures of compressed dry powders, or also by powder-anhydrous binder mixtures, these cosmetic preparations, which advantageously contain colored or dyed pigments, used in particular for face makeup, and often being designated by the term "compact".
  • this type of powder consists of a powder base chosen in particular from talc, rice starch, kaolin, silk powder or polymer powder to which pigments are added to obtain coloring, for example titanium, zinc or iron oxides.
  • a pearlescent effect is desired, a mica powder or a mica powder coated with metal oxides, in particular titanium and bismuth, or aluminum powders is added.
  • a small amount of binder is generally added, for example vegetable, animal, mineral or synthetic oils, zinc stearate, sorbitol or lanolin.
  • These powders can also contain preservatives such as methylparaben or propylparaben, surfactants, preferably nonionic and perfumes.
  • the basic fluid powder is placed in the bottom of an enclosure, in which a piston or a punch is slid which compresses said powder to ensure the cohesion of its grains.
  • a piston or a punch is slid which compresses said powder to ensure the cohesion of its grains.
  • the enclosure is, at its base, delimited by a cup which receives the resulting compact product.
  • binders can be used, in combination with the powder, to modify the texture of the compact or improve this cohesion; in this case, the binders must be distributed regularly and homogeneously within the product during compaction, which, in practice, is not always carried out.
  • the present invention provides a solution to the above problems.
  • the compaction is carried out, no longer at room temperature, but hot. Under these conditions, the grains of the base powder adhere more strongly to each other, to give the desired effect.
  • the binders if they are present, then see their fluidity increase, from which it results that they disperse more easily and faster within the product during compaction. It is therefore possible, by operating hot, to introduce less binder than working at room temperature, for the same cohesion of the final compact; the texture of said compact will then be more "powdery", thus facilitating the distribution of the product. Furthermore, if a quantity of binder equal to that which would be used when working at room temperature is introduced into a hot operation, a more "creamy" texture of the compact is obtained. The invention therefore makes it possible to choose a texture of compact within a wider range, by adjusting the quantity of binder used.
  • the invention also offers other additional advantages: it allows, in fact, the use of microencapsulated binders, providing ease of handling of the compositions to be compacted, the pressure applied during compacting causing these microcapsules to burst; it also allows the use of hydrophobic binders, such as waxes, which could not be used if there was no heat input, the compacts more hydrophobic obtained leading to better water-resistant makeup.
  • the present invention proposes, in order to be able to benefit from this advantage, a technique which makes it possible to directly obtain a compact product packaging, in which the user has access to the product through this more brittle part.
  • the resulting cup is presented turned over on itself so that the product can be withdrawn through its opening (s) ), on the side which has not been directly affected by the compacting piston and which is therefore less hard.
  • the present invention therefore firstly relates to a process for the compacting of a cosmetic preparation based on powder, according to which a quantity of said pulverulent preparation is placed in an enclosure which is open at its upper part and whose lower part is delimited by a cup intended to contain, at the end of the operation, the resulting compact cosmetic preparation, and compression of the preparation is carried out using a compaction gun moving in said enclosure substantially perpendicular to the mean plane of the layer of said pulverulent preparation, characterized in that the hot compaction is carried out.
  • a compacting piston equipped with a heating device is used. Furthermore, the temperature of the compacting piston is adjusted to a temperature of, for example, between 40 and 300 ° C.
  • a powdery cosmetic preparation which contains at least one binder, in particular at a rate of 2 to 15% by weight relative to the totality of the powdery cosmetic preparation.
  • binders which can be used, mention may in particular be made of petrolatum oil and castor oil.
  • the binders can advantageously be packaged in microcapsules. In this case, during compaction, the compression applied to the pulverulent composition ensures the bursting of the microcapsules, which are perfectly mixed with the base powder and whose content constituted by the binder itself spreads uniformly and rapidly within the base powder, to ensure good cohesion of its grains.
  • a binder content lower or equal to that which would be chosen for compacting without adding heat in order to obtain a respectively more powdery or more creamy texture of the cosmetic preparation. compact.
  • binders of hydrophobic nature such as waxes; one can thus obtain a make-up whose hydrophobic character is reinforced, that is to say having better water resistance.
  • a cup in which the cup is intended to constitute, with the compact cosmetic preparation, a packaging element for the latter, a cup is used whose bottom has at least one opening, said enclosure being delimited , in the region of said (or said) opening (s) by a base counterplate on which said cup rests, the surface of the compact cosmetic preparation, which is accessible by said (or said) opening (s), constituting , in the final packaging of the compact cosmetic preparation, the surface area for sampling, by the user, of said preparation.
  • a base counter plate can be used, the surface of which facing the (or each) opening of the bottom of the cup is slightly concave, to give the compact in this area a slightly convex projecting surface relative to the plane of the outer wall of the bottom of the cup.
  • This film apart from the fact that it must, in hot compaction, have good heat resistance, must be made of an extremely flexible material in the case where the previous variant is used.
  • a film can be used welded to the outer edge of the bottom of the cup or a completely adhesive film on its surface facing said bottom, said film in this case achieving the inviolability of the compact cosmetic preparation in its associated cup.
  • the film is completely adhesive, one obtains, when the latter is removed, a surface of the compact product which comprises a slight screening, which can be sought from an aesthetic point of view.
  • a layer of liquid glue for example hot-melt, can be deposited on the bottom of a case capable of receiving by interlocking the cup containing the associated compact preparation, the bottom of said cup being turned outwards, and allowing it to harden. the adhesive to secure the cup to the bottom of the housing and to the lower internal edge of the side wall of said housing, to constitute the final packaging of the compact preparation.
  • the present invention also relates to compact cosmetic preparations obtained by the process defined above.
  • an enclosure has been designated by 1 in which an amount of powder 2 has been placed intended to be compacted.
  • This powder has the following weight composition: - Talc 40% - Pigments 10% - Pearlizing agent (mica) 4 ⁇ % - Binder (petroleum jelly, jojoba oil) possibly microencapsulated 10%
  • the amount of binder is less than the normal amount that would be used in conventional compaction without the addition of heat.
  • the enclosure 1 is delimited by a horizontal support 3, serving as a counter-plate in the powder compacting operation 2, by a cup 4 resting on said counter-plate 3, and by a tubular sleeve 5.
  • the cup 4 made of plastic by example, is constituted by a rectangular bottom 6, to which is connected a side wall 7 of low height.
  • the quantity of fluid powder 2 introduced and the dimensions of the cup 4 are calculated so that the compaction leads to a flat parallelepiped block 8 (FIG. 3), the upper surface of which is flush with the free edge of the side wall 7 of the cup 4.
  • the bottom 6 of the latter has an opening 9 of ellipsoidal shape, centered on the center of the bottom 6 and occupying a large surface of said bottom.
  • the sleeve 5, of rectangular cross section corresponding to the internal cross section of the cup 4 has a recess 10 from its internal wall, at a distance from one of its edges which is equal to the height of the cup 4.
  • the cup 4 rests on the counter plate 3 with the interposition of a film 11, the sleeve 5 coming to fit axially on the cup 4, so that the free upper edge of the latter abuts against the recess 10, the internal surfaces of the wall 7 and of the sleeve 5 being placed in the extension of one another.
  • the film 11 is a very flexible plastic film such as polycarbonate or polyester; its shape and dimensions correspond to those of the bottom of the cup 4; moreover, it is extended laterally by a tongue 12, as is clearly visible in FIG. 2.
  • the film 11 is bonded by its border to the periphery of the outer wall of the bottom 6, or else it is completely adhesive on its surface. opposite the bottom 6 of the cup 4.
  • a piston 13 is slidably mounted, which is equipped with a heating device 14, for example an electrical resistance, adapted to heat the wall of the piston 13 intended to compress the powder as uniformly as possible.
  • the piston 13 is applied, the device 14 being in service, on the powder 2, the level of which exceeds that of the upper edge of the cup 4, until the compact is obtained 8.
  • the compaction pressure is between 4 ⁇ and 4 ⁇ bars and it is maintained for 1 to 15 seconds.
  • the temperature of the piston 13, when it comes to compress the powder 2, is of the order of 1 ⁇ to 3 ⁇ ° C. Under these conditions, the binder distributes better and faster within the particles constituting the base of the powder.
  • the texture of the resulting compact is a more powdery texture, allowing easier distribution of the powder.
  • the assembly shown in FIG. 2 is obtained, consisting of the cup 4, the compact 8 and the film 11.
  • This assembly is then placed, in the inverted position, as shown in FIG. 3, in a housing 15 whose solid bottom 16 is connected to a side wall 17, the internal cross section of this housing 15 being equal to or slightly greater than the cross section of the cup 4.
  • a layer of hot-melt adhesive 18 has been placed in the liquid state. Taking this adhesive allows the compact 8 to be fixed to the bottom 16 of the housing 15; moreover, the hot-melt adhesive 18, while it is still liquid, rises laterally against the wall 17, in order to ensure total attachment of the cup 4 and of the housing 15.
  • the film 11 is removed in one piece by grasping the tongue 12 and there is then access to the compact 8 through the opening 9 of the cup.
  • Access to the compact product is here by the less hard part of the compact 8, due to the mode of formation of the latter, which further contributes to the ease of removal of the product by the user. Furthermore, any defects in the edge of the compact 8 are hidden from view, this edge being covered by the periphery of the bottom 6.
  • the bonding of the compact 8 to the bottom 16 of the housing 15, avoids inadvertent cracking of the compact 8 either in use, when the user is required to press the compact 8, or at the time of transportation.
  • FIG 4 there is shown an alternative embodiment according to which the counter plate 3 a has, in its region facing the opening 9 of the bottom 6 of the cup 4, a slightly concave shape. In this way, a compact 8 is obtained which projects slightly through the opening 9, thus giving an aesthetic effect to the resulting packaging.
  • FIG. 5 illustrates another possibility offered by the present invention, namely that of providing, in enclosure 1, on the bottom 6 of the cup 4, a transverse separation bar 19 formed between the edges of the bottom. 6 delimiting the opening 9.
  • This bar 19 constitutes a separation allowing the introduction, into the enclosure, of two types of pulverulent substances, 2 a , 2 b , differing for example by the color of the pigments which they contain, and constituting, for example, complementary makeup products.
  • the bar 19 may have a curved shape also giving an aesthetic note to the final packaging of the compact 8.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cosmetics (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Packages (AREA)

Abstract

On place une quantité de la préparation pulvérulente (2), renfermant avantageusement un liant, dans une enceinte (1) qui est ouverte à sa partie supérieure et dont la partie inférieure est délimitée par une coupelle (4) destinée à contenir, en fin d'opération, le compact résultant. On réalise la compression à chaud de la préparation (2), le piston de compactage (13) étant équipé d'un dispositif chauffant (14). Le chauffage apporte une meilleure cohésion du compact et, si un liant est présent, sa fluidité est accrue. L'invention offre la possibilité d'utiliser des liants microencapsulés ainsi que des liants à caractère hydrophobe. Utilisable pour les poudres compactes de maquillage.A quantity of the pulverulent preparation (2), advantageously containing a binder, is placed in an enclosure (1) which is open at its upper part and whose lower part is delimited by a cup (4) intended to contain, at the end of 'operation, the resulting compact. The preparation (2) is hot pressed, the compacting piston (13) being equipped with a heating device (14). Heating provides better cohesion of the compact and, if a binder is present, its fluidity is increased. The invention offers the possibility of using microencapsulated binders as well as hydrophobic binders. Usable for compact make-up powders.

Description

La présente invention concerne le domaine des préparations cosmétiques constituées par des poudres sèches comprimées ou par des mélanges de poudres sèches comprimées, ou encore par des mélanges poudres-liants anhydres, ces préparations cosmétiques, qui renferment avantageusement des pigments colorés ou teintes, servant notamment pour le maquillage du visage, et étant souvent désignés par le terme "compacts".The present invention relates to the field of cosmetic preparations constituted by compressed dry powders or by mixtures of compressed dry powders, or also by powder-anhydrous binder mixtures, these cosmetic preparations, which advantageously contain colored or dyed pigments, used in particular for face makeup, and often being designated by the term "compact".

De façon générale, on sait que ce type de poudre est constitué d'une base pulvérulente choisie notamment parmi le talc, l'amidon de riz, le kaolin, la poudre de soie ou la poudre de polymère à laquelle on ajoute des pigments pour obtenir une coloration, par exemple des oxydes de titane, de zinc ou de fer. Lorsque l'on désire un effet nacrant, on ajoute une poudre de mica ou une poudre de mica revêtue par des oxydes métalliques, notamment de titane et de bismuth, ou des poudres d'aluminium. Pour obtenir une adhérence suffisante sur la peau, on ajoute généralement une petite quantité de liant, par exemple des huiles végétales, animales, minérales ou synthétiques, du stéarate de zinc, du sorbitol ou de la lanoline. Ces poudres peuvent contenir, en outre, des agents de conservation tels que le méthylparabène ou le propylparabène, des tensio-actifs, de préférence non-­ioniques et des parfums.Generally, it is known that this type of powder consists of a powder base chosen in particular from talc, rice starch, kaolin, silk powder or polymer powder to which pigments are added to obtain coloring, for example titanium, zinc or iron oxides. When a pearlescent effect is desired, a mica powder or a mica powder coated with metal oxides, in particular titanium and bismuth, or aluminum powders is added. To obtain sufficient adhesion to the skin, a small amount of binder is generally added, for example vegetable, animal, mineral or synthetic oils, zinc stearate, sorbitol or lanolin. These powders can also contain preservatives such as methylparaben or propylparaben, surfactants, preferably nonionic and perfumes.

Pour obtenir un compact de maquillage, on dispose la poudre fluide de base dans le fond d'une enceinte, dans laquelle on fait coulisser un piston ou un poinçon qui vient comprimer ladite poudre pour assurer la cohésion de ses grains. En général, on s'arrange pour que l'enceinte soit, à sa base, délimitée par une coupelle qui reçoit le produit compact résultant.To obtain a make-up compact, the basic fluid powder is placed in the bottom of an enclosure, in which a piston or a punch is slid which compresses said powder to ensure the cohesion of its grains. In general, it is arranged so that the enclosure is, at its base, delimited by a cup which receives the resulting compact product.

Par cette opération de compactage, on cherche à obtenir la cohésion la plus forte possible des grains de la poudre de base, afin d'éviter un effritement du compact ; ce resultat, qui dépend de la texture de la poudre soumise au compactage, n'est pas toujours aisé à obtenir. Par ailleurs, on peut utiliser des liants, en combinaison avec la poudre, pour modifier la texture du compact ou améliorer cette cohésion ; dans ce cas, les liants doivent se répartir de façon régulière et homogène au sein du produit pendant le compactage, ce qui, dans la pratique, n'est pas toujours réalisé.By this compacting operation, it is sought to obtain the strongest possible cohesion of the grains of the base powder, in order to avoid crumbling of the compact; this result, which depends on the texture of the powder subjected to compaction, is not always easy to obtain. Furthermore, binders can be used, in combination with the powder, to modify the texture of the compact or improve this cohesion; in this case, the binders must be distributed regularly and homogeneously within the product during compaction, which, in practice, is not always carried out.

La présente invention apporte une solution aux problèmes ci-dessus.The present invention provides a solution to the above problems.

Selon l'invention, on effectue le compactage, non plus à la température ambiante, mais à chaud. Dans ces con­ditions, les grains de la poudre de base adhèrent plus fortement entre eux, pour donner l'effet recherché. Les liants, s'ils sont présents, voient alors leur fluidité aug­menter, d'où il résulte qu'ils se dispersent plus facilement et plus vite au sein du produit pendant le compactage. On peut donc, en opérant à chaud, introduire moins de liant qu'en travaillant à la température ambiante, pour une même cohésion du compact final ; la texture dudit compact sera alors plus "poudreuse", facilitant ainsi la distribution du produit. Par ailleurs, si l'on introduit dans une opération à chaud une quantité de liant égale à celle que l'on util­iserait en travaillant à la température ambiante, on obtient une texture plus "crémeuse" du compact. L'invention permet donc de choisir une texture de compact dans une plage plus large, par le réglage de la quantité de liant mise en oeuvre.According to the invention, the compaction is carried out, no longer at room temperature, but hot. Under these conditions, the grains of the base powder adhere more strongly to each other, to give the desired effect. The binders, if they are present, then see their fluidity increase, from which it results that they disperse more easily and faster within the product during compaction. It is therefore possible, by operating hot, to introduce less binder than working at room temperature, for the same cohesion of the final compact; the texture of said compact will then be more "powdery", thus facilitating the distribution of the product. Furthermore, if a quantity of binder equal to that which would be used when working at room temperature is introduced into a hot operation, a more "creamy" texture of the compact is obtained. The invention therefore makes it possible to choose a texture of compact within a wider range, by adjusting the quantity of binder used.

L'invention offre, en outre, d'autres avantages complémentaires : elle permet, en effet, l'utilisation de liants microencapsulés, procurant une facilité de manipula­tion des compositions à compacter, la pression appliquée lors du compactage faisant éclater ces microcapsules ; elle permet, en outre, l'utilisation de liants à caractère hydro­phobe, comme des cires, qui ne pourraient être utilisés s'il n'y avait pas apport de chaleur, les compacts plus hydrophobes obtenus conduisant à un maquillage résistant mieux à l'eau.The invention also offers other additional advantages: it allows, in fact, the use of microencapsulated binders, providing ease of handling of the compositions to be compacted, the pressure applied during compacting causing these microcapsules to burst; it also allows the use of hydrophobic binders, such as waxes, which could not be used if there was no heat input, the compacts more hydrophobic obtained leading to better water-resistant makeup.

On a, par ailleurs, constaté qu'un compact, obtenu dans sa coupelle de la façon classique indiquée ci-dessus, n'est pas homogène sur sa hauteur, en particulier qu'il est plus friable dans la région voisine du fond de la coupelle, et plus dur dans la région opposée, sur la surface de laquelle a été appliqué le piston de compactage. La raison en est que la pression appliquée sur la poudre fluide ne se transmet pas de façon parfaite à travers la couche de pou­dre, par suite de l'élasticité de cette dernière. Or, à l'utilisation, il est plus aisé de prélever la poudre sur une partie plus friable.It has also been found that a compact, obtained in its cup in the conventional manner indicated above, is not homogeneous over its height, in particular that it is more brittle in the region near the bottom of the cup, and harder in the opposite region, on the surface of which the compacting piston was applied. The reason is that the pressure applied to the fluid powder is not transmitted perfectly through the powder layer, due to the elasticity of the latter. However, in use, it is easier to take the powder from a more brittle part.

La présente invention propose, pour pouvoir bénéficier de cet avantage, une technique qui permet d'obtenir directement un conditionnement de produit compact, dans lequel l'utilisateur a accès au produit par cette par­tie plus friable. A cet effet, on prévoit que la coupelle placée dans le fond de l'enceinte présente au moins une ouverture, ladite enceinte étant délimitée, au niveau de cette (ou de ces) ouverture(s), par une contre-plaque de base. Dans ces conditions, après l'opération de compactage, dans le conditionnement final constitué par exemple par un boîtier, on présente la coupelle résultante retournée sur elle-même pour qu'on puisse prélever le produit à travers son (ou ses) ouverture(s), du côté qui n'a pas subi directe­ment l'action du piston de compactage et qui est donc moins dur.The present invention proposes, in order to be able to benefit from this advantage, a technique which makes it possible to directly obtain a compact product packaging, in which the user has access to the product through this more brittle part. To this end, provision is made for the cup placed in the bottom of the enclosure to have at least one opening, said enclosure being delimited, at this (or these) opening (s), by a base counterplate. Under these conditions, after the compacting operation, in the final packaging consisting for example of a box, the resulting cup is presented turned over on itself so that the product can be withdrawn through its opening (s) ), on the side which has not been directly affected by the compacting piston and which is therefore less hard.

Par ailleurs, on a constaté, dans la mise en oeuvre du compactage d'une façon classique, que les bords des compacts présentent souvent des défauts, le compactage étant toujours plus homogène dans la partie centrale du com­pact. Avec la technique qui vient d'être indiquée, il suffit de disposer la (ou les) ouverture(s) du fond de la coupelle, principalement dans la région centrale de celle-ci. De la sorte, les bords du compact sont cachés dans le conditionnement final, lequel offre alors un aspect plus esthétique.Furthermore, it has been found, in the implementation of compacting in a conventional manner, that the edges of the compacts often have defects, the compacting being always more homogeneous in the central part of the compact. With the technique which has just been indicated, it suffices to have the opening (s) at the bottom of the cup, mainly in the central region thereof. In this way, the edges of the compact are hidden in the final packaging, which then offers a more aesthetic appearance.

Conformément à des variantes de cette technique, on peut faire en sorte que la contre-plaque soit légèrement concave au droit de l'ouverture de la coupelle pour que le compact dépasse du fond de la coupelle, par ladite ouver­ture, selon une partie légèrement bombée donnant aussi un aspect plus esthétique à l'ensemble.According to variants of this technique, it is possible to ensure that the counterplate is slightly concave in line with the opening of the cup so that the compact protrudes from the bottom of the cup, through said opening, in a slightly domed part. also giving a more aesthetic appearance to the whole.

Un autre avantage de cette technique est que les ouvertures précitées peuvent présenter n'importe quelle découpe, donc, avantageusement, des découpes originales ou esthétiques, mais que, dans tous les cas, on pourra utiliser le même piston de compactage pour une coupelle de forme d'ensemble donnée. Il suffit simplement de remplacer, à chaque fois, dans le système de compactage, la coupelle par une autre comportant un autre type d'ouverture.Another advantage of this technique is that the aforementioned openings can have any cutout, therefore, advantageously, original or aesthetic cutouts, but that, in all cases, the same compacting piston can be used for a shaped cup given overall. It suffices simply to replace, each time, in the compaction system, the cup with another comprising another type of opening.

On peut, dans le système de compactage, interposer entre la contre-plaque de base et la coupelle un film souple de protection, résistant à la chaleur qui sera éventuelle­ment appliqué et constituant avantageusement un film d'inviolabilité de la poudre. Le film de protection peut ainsi être remplacé par un opercule rigide monté à la place de la pellicule souple, cet opercule pouvant être obtenu par injection et pouvant être solidarisé du fond de la coupelle par encliquetage. On peut aussi installer des barrettes de séparation sur le fond de la coupelle, dans l'enceinte de compactage, de façon à compacter, dans une même opération, des poudres de différentes natures, par exemple renfermant des pigments de couleurs ou nuances différentes, notamment pour présenter, dans un même conditionnement, des produits de maquillage complémentaires.It is possible, in the compacting system, to interpose between the base counterplate and the cup a flexible protective film, heat resistant which may be applied and advantageously constituting a film of inviolability of the powder. The protective film can thus be replaced by a rigid cover mounted in place of the flexible film, this cover can be obtained by injection and can be secured to the bottom of the cup by snap-fastening. It is also possible to install separating bars on the bottom of the cup, in the compacting enclosure, so as to compact, in the same operation, powders of different natures, for example containing pigments of different colors or shades, in particular to present, in the same packaging, complementary makeup products.

La présente invention a donc d'abord pour objet un procédé pour le compactage d'une préparation cosmétique à base de poudre, suivant lequel on place une quantité de ladite préparation pulvérulente dans une enceinte qui est ouverte à sa partie supérieure et dont la partie inférieure est délimitée par une coupelle destinée à contenir, en fin d'opération, la préparation cosmétique compacte résultante, et on réalise la compression de la préparation à l'aide d'un pistol de compactage se déplaçant dans ladite enceinte sen­siblement perpendiculairement au plan moyen de la couche de ladite préparation pulvérulente, caractérisé par le fait que l'on effectue le compactage à chaud.The present invention therefore firstly relates to a process for the compacting of a cosmetic preparation based on powder, according to which a quantity of said pulverulent preparation is placed in an enclosure which is open at its upper part and whose lower part is delimited by a cup intended to contain, at the end of the operation, the resulting compact cosmetic preparation, and compression of the preparation is carried out using a compaction gun moving in said enclosure substantially perpendicular to the mean plane of the layer of said pulverulent preparation, characterized in that the hot compaction is carried out.

De préférence, on utilise un piston de compactage équipé d'un dispositif chauffant. Par ailleurs, on règle la température du piston de compactage à une température comprise, par exemple, entre 40 et 300°C. On peut également pré-chauffer à 1ØØ°C, d'une part, les coupelles, et d'autre part, la poudre dans une trémie chauffante avant compactage à chaud.Preferably, a compacting piston equipped with a heating device is used. Furthermore, the temperature of the compacting piston is adjusted to a temperature of, for example, between 40 and 300 ° C. One can also preheat to 1ØØ ° C, on the one hand, the cups, and on the other hand, the powder in a heating hopper before hot compaction.

On utilise avantageusement une préparation cosmétique pulvérulente qui renferme au moins un liant, à raison notamment de 2 à 15% en poids par rapport à la totalité de la préparation cosmétique pulvérulente. Parmi les liants utilisables, on peut citer notamment l'huile de vaseline et l'huile de ricin. Les liants peuvent avan­tageusement être conditionnés en microcapsules. Dans ce cas, lors du compactage, la compression appliquée à la composi­tion pulvérulente assure l'éclatement des microcapsules, qui sont parfaitement mélangées avec la poudre de base et dont le contenu constitué par le liant proprement dit se répand uniformément et rapidement au sein da la poudre de base, afin d'assurer une bonne cohésion de ses grains.Advantageously, a powdery cosmetic preparation is used which contains at least one binder, in particular at a rate of 2 to 15% by weight relative to the totality of the powdery cosmetic preparation. Among the binders which can be used, mention may in particular be made of petrolatum oil and castor oil. The binders can advantageously be packaged in microcapsules. In this case, during compaction, the compression applied to the pulverulent composition ensures the bursting of the microcapsules, which are perfectly mixed with the base powder and whose content constituted by the binder itself spreads uniformly and rapidly within the base powder, to ensure good cohesion of its grains.

Selon l'invention, pour une préparation cosmétique donnée, on peut choisir un taux de liant inférieur ou égal à celui qui serait choisi pour un compactage sans apport de chaleur, afin d'obtenir une texture respectivement plus poudreuse ou plus crémeuse de la préparation cosmétique com­pacte.According to the invention, for a given cosmetic preparation, it is possible to choose a binder content lower or equal to that which would be chosen for compacting without adding heat, in order to obtain a respectively more powdery or more creamy texture of the cosmetic preparation. compact.

Egalement, selon l'invention, on peut utiliser des liants à caractère hydrophobe, comme des cires ; on peut ainsi obtenir un maquillage dont le caractère hydrophobe est renforcé, c'est-à-dire présentant une meilleure tenue à l'eau.Also, according to the invention, it is possible to use binders of hydrophobic nature, such as waxes; one can thus obtain a make-up whose hydrophobic character is reinforced, that is to say having better water resistance.

Conformément à une caractéristique intéressante de la présente invention, dans laquelle la coupelle est destinée à constituer, avec la préparation cosmétique com­pacte, un élément de conditionnement de cette dernière, on utilise une coupelle dont le fond comporte au moins une ouverture, ladite enceinte étant délimitée, dans la région de ladite (ou desdites) ouverture(s) par une contre-plaque de base sur laquelle repose ladite coupelle, la surface de la préparation cosmétique compacte, qui est accessible par ladite (ou lesdites) ouverture(s), constituant, dans le con­ditionnement final de la préparation cosmétique compacte, la surface de prélèvement, par l'utilisateur, de ladite préparation.According to an advantageous characteristic of the present invention, in which the cup is intended to constitute, with the compact cosmetic preparation, a packaging element for the latter, a cup is used whose bottom has at least one opening, said enclosure being delimited , in the region of said (or said) opening (s) by a base counterplate on which said cup rests, the surface of the compact cosmetic preparation, which is accessible by said (or said) opening (s), constituting , in the final packaging of the compact cosmetic preparation, the surface area for sampling, by the user, of said preparation.

En particulier, on peut utiliser une coupelle dont la (ou les) ouverture(s) est (ou sont) pratiquée(s) dans la partie centrale du fond, la région de bordure de la préparation cosmétique compacte étant protégée de l'extérieur, dans le conditionnement final, par la zone périphérique du fond de ladite coupelle.In particular, it is possible to use a cup whose opening (s) is (or are) made in the central part of the base, the border region of the compact cosmetic preparation being protected from the outside, in the final packaging, by the peripheral zone of the bottom of said cup.

Selon une variante, on peut utiliser une contre-plaque de base, dont la surface venant en regard de la (ou de chaque) ouverture du fond de la coupelle est légèrement con­cave, pour donner au compact dans cette zone une surface légèrement convexe en saillie par rapport au plan de la paroi externe du fond de la coupelle.According to a variant, a base counter plate can be used, the surface of which facing the (or each) opening of the bottom of the cup is slightly concave, to give the compact in this area a slightly convex projecting surface relative to the plane of the outer wall of the bottom of the cup.

Par ailleurs, on peut disposer, entre le fond de la coupelle perforée et la contre-plaque de base, une pelli­cule souple de protection capable de rester solidaire de ladite coupelle et de son contenu après le compactage. Cette pellicule, en dehors du fait qu'elle doit, dans un compac­tage à chaud, présenter une bonne résistance à la chaleur, doit être réalisée en un matériau extrêmement souple dans le cas où la variante précédente est mise en oeuvre.Furthermore, one can have, between the bottom of the perforated cup and the base plate, a flexible protective film capable of remaining integral with said cup and its contents after compaction. This film, apart from the fact that it must, in hot compaction, have good heat resistance, must be made of an extremely flexible material in the case where the previous variant is used.

En particulier, on peut utiliser une pellicule soudée sur la bordure externe du fond de la coupelle ou une pellicule totalement adhésive sur sa surface venant en regard dudit fond, ladite pellicule réalisant dans ce cas l'inviolabilité de la préparation cosmétique compacte dans sa coupelle associée. Dans le cas où la pellicule est totalement adhésive, on obtient, lorsqu'on retire cette dernière, une surface du produit compact qui comporte un léger tramage, ce qui peut être recherché sur le plan esthétique.In particular, a film can be used welded to the outer edge of the bottom of the cup or a completely adhesive film on its surface facing said bottom, said film in this case achieving the inviolability of the compact cosmetic preparation in its associated cup. In the case where the film is completely adhesive, one obtains, when the latter is removed, a surface of the compact product which comprises a slight screening, which can be sought from an aesthetic point of view.

Egalement, on peut disposer, dans l'espace interne de l'enceinte, au moins une barrette de séparation de préparations cosmétiques pulvérulentes de différentes natures, de façon à la faire reposer sur la contre-plaque en traversant l'ouverture (ou au moins l'une des ouvertures) du fond de la coupelle, et compacter simultanément ces préparations.Also, one can have, in the internal space of the enclosure, at least one separating bar of powdered cosmetic preparations of different natures, so as to make it rest on the counterplate by crossing the opening (or at least one of the openings) at the bottom of the cup, and simultaneously compact these preparations.

Enfin, on peut déposer une couche de colle liquide, par exemple thermofusible, sur le fond d'un boîtier capable de recevoir par emboîtement la coupelle renfermant la préparation compacte associée, le fond de ladite coupelle étant tourné vers l'extérieur, et laisser durcir la colle pour assurer la fixation de la coupelle sur le fond du boîtier et sur la bordure interne inférieure de la paroi latérale dudit boîtier, pour constituer le conditionnement final de la préparation compacte.Finally, a layer of liquid glue, for example hot-melt, can be deposited on the bottom of a case capable of receiving by interlocking the cup containing the associated compact preparation, the bottom of said cup being turned outwards, and allowing it to harden. the adhesive to secure the cup to the bottom of the housing and to the lower internal edge of the side wall of said housing, to constitute the final packaging of the compact preparation.

La présente invention a également pour objet les préparations cosmétiques compactes obtenues par le procédé ci-dessus défini.The present invention also relates to compact cosmetic preparations obtained by the process defined above.

Pour mieux faire comprendre l'objet de la présente invention, on va en décrire ci-après, à titre d'exemples purement indicatifs et non limitatifs, plusieurs modes de réalisation représentés sur le dessin annexé.To better understand the object of the present invention, there will be described below, by way of purely indicative and nonlimiting examples, several embodiments shown in the accompanying drawing.

Sur ce dessin :

  • - la figure 1 représente une vue schématique en coupe verticale d'un dispositif de compactage adapté pour la mise en oeuvre du procédé conforme à la présente invention ;
  • - la figure 2 est une vue en perspective de la coupelle renfermant la préparation cosmétique compacte, telle qu'elle est obtenue en fin de compactage par le dispo­sitif de la figure 1, cette coupelle étant présentée en position retournée afin de montrer le côté de prélèvement du produit compact :
  • - la figure 3 représente, en coupe longitudinale, la coupelle de la figure 1 après mise en place dans un boîtier de présentation ;
  • - la figure 4 est une vue analogue à la figure 1 d'un dispositif de compactage réalisé selon une variante ;
  • - la figure 5 est une vue analogue à la figure 1, illustrant la possibilité de réaliser des coupelles à plusieurs compartiments : et
  • - la figure 6 répresente la vue de dessus de la coupelle de la figure 5, après compactage, montrant les sur­faces de prélèvement des produits compactés dans ces compar­timents.
On this drawing :
  • - Figure 1 shows a schematic view in vertical section of a compacting device suitable for implementing the method according to the present invention;
  • - Figure 2 is a perspective view of the cup containing the compact cosmetic preparation, as obtained at the end of compaction by the device of Figure 1, this cup being presented in the inverted position in order to show the sampling side of the compact product:
  • - Figure 3 shows, in longitudinal section, the cup of Figure 1 after installation in a presentation box;
  • - Figure 4 is a view similar to Figure 1 of a compacting device produced according to a variant;
  • FIG. 5 is a view similar to FIG. 1, illustrating the possibility of making cups with several compartments: and
  • - Figure 6 shows the top view of the cup of Figure 5, after compacting, showing the sampling surfaces of the compacted products in these compartments.

Si l'on se réfère à la figure 1, on voit que l'on a désigné par 1 une enceinte dans laquelle on a disposé une quantité de poudre 2 destinée à être compactée. Cette poudre a la composition pondérale suivante :
- Talc      40 %
- Pigments      10 %
- Agent nacrant (mica)      4Ø %
- Liant (huile de vaseline, de jojoba) éventuellement microencapsulée      10 %Referring to FIG. 1, it can be seen that an enclosure has been designated by 1 in which an amount of powder 2 has been placed intended to be compacted. This powder has the following weight composition:
- Talc 40%
- Pigments 10%
- Pearlizing agent (mica) 4Ø%
- Binder (petroleum jelly, jojoba oil) possibly microencapsulated 10%

La quantité de liant est inférieure à la quantité normale qui serait utilisée dans un compactage classique sans apport de chaleur.The amount of binder is less than the normal amount that would be used in conventional compaction without the addition of heat.

L'enceinte 1 est délimitée par un support horizon­tal 3, servant de contre-plaque dans l'opération de compac­tage de la poudre 2, par une coupelle 4 reposant sur ladite contre-plaque 3, et par un manchon tubulaire 5.The enclosure 1 is delimited by a horizontal support 3, serving as a counter-plate in the powder compacting operation 2, by a cup 4 resting on said counter-plate 3, and by a tubular sleeve 5.

La coupelle 4, réalisée en matière plastique par exemple, est constituée par un fond rectangulaire 6, auquel se raccorde une paroi latérale 7 de faible hauteur. La quan­tité de poudre fluide 2 introduite et les dimensions de la coupelle 4 sont calculées pour que le compactage conduise à un bloc parallélépipédique plat 8 (figure 3), dont la sur­face supérieure affleure la bordure libre de la paroi latérale 7 de la coupelle 4. Le fond 6 de cette dernière comporte une ouverture 9 de forme ellipsoïdale, centrée sur le centre du fond 6 et occupant une surface importante dudit fond.The cup 4, made of plastic by example, is constituted by a rectangular bottom 6, to which is connected a side wall 7 of low height. The quantity of fluid powder 2 introduced and the dimensions of the cup 4 are calculated so that the compaction leads to a flat parallelepiped block 8 (FIG. 3), the upper surface of which is flush with the free edge of the side wall 7 of the cup 4. The bottom 6 of the latter has an opening 9 of ellipsoidal shape, centered on the center of the bottom 6 and occupying a large surface of said bottom.

Le manchon 5, de section droite rectangulaire correspondant à la section droite interne de la coupelle 4, présente un décrochement 10 de sa paroi interne, à une dis­tance de l'une de ses bordures qui est égale à la hauteur de la coupelle 4.The sleeve 5, of rectangular cross section corresponding to the internal cross section of the cup 4, has a recess 10 from its internal wall, at a distance from one of its edges which is equal to the height of the cup 4.

Pour le compactage, la coupelle 4 repose sur la contre-plaque 3 avec interposition d'une pellicule 11, le manchon 5 venant s'emboîter axialement sur la coupelle 4, de façon que la bordure supérieure libre de celle-ci vienne en butée contre le décrochement 10, les surfaces internes de la paroi 7 et du manchon 5 venant se placer dans la prolonge­ment l'une de l'autre.For compaction, the cup 4 rests on the counter plate 3 with the interposition of a film 11, the sleeve 5 coming to fit axially on the cup 4, so that the free upper edge of the latter abuts against the recess 10, the internal surfaces of the wall 7 and of the sleeve 5 being placed in the extension of one another.

La pellicule 11 est une pellicule en matière plas­tique très souple comme le polycarbonate ou le polyester ; sa forme et ses dimensions correspondent à celles du fond de la coupelle 4 ; par ailleurs, elle se prolonge latéralement par une languette 12, comme cela est bien visible sur la figure 2. La pellicule 11 est collée par sa bordure sur la périphérie de la paroi externe du fond 6, ou bien elle est totalement adhésive sur sa surface en regard du fond 6 de la coupelle 4.The film 11 is a very flexible plastic film such as polycarbonate or polyester; its shape and dimensions correspond to those of the bottom of the cup 4; moreover, it is extended laterally by a tongue 12, as is clearly visible in FIG. 2. The film 11 is bonded by its border to the periphery of the outer wall of the bottom 6, or else it is completely adhesive on its surface. opposite the bottom 6 of the cup 4.

Dans l'enceinte 1, est monté coulissant un piston 13, lequel est équipé d'un dispositif chauffant 14, par exemple une résistance électrique, adapté pour chauffer de la façon la plus uniforme possible la paroi du piston 13 destinée à venir comprimer la poudre 2.In the enclosure 1, a piston 13 is slidably mounted, which is equipped with a heating device 14, for example an electrical resistance, adapted to heat the wall of the piston 13 intended to compress the powder as uniformly as possible. 2.

Pour le compactage, le piston 13 vient s'appliquer, le dispositif 14 étant en service, sur la pou­dre 2 dont le niveau dépasse celui de la bordure supérieure de la coupelle 4, jusqu'à obtention du compact 8. La pres­sion de compactage est comprise entre 4Ø et 4ØØ bars et elle est maintenue pendant 1 à 15 secondes. La température du piston 13, lorsqu'il vient comprimer la poudre 2, est de l'ordre de 1ØØ à 3ØØ°C. Dans ces conditions, le liant se répartit mieux et plus vite au sein des particules consti­tuant la base de la poudre. On obtient une cohésion du com­pact résultant 8 au moins équivalente à celle qui aurait été obtenue avec emploi d'une quantité normale de liant, en vue d'un compactage classique sans apport de chaleur. En outre, la texture du compact résultant est une texture plus poudreuse, permettant une distribution plus facile de la poudre.For compaction, the piston 13 is applied, the device 14 being in service, on the powder 2, the level of which exceeds that of the upper edge of the cup 4, until the compact is obtained 8. The compaction pressure is between 4Ø and 4ØØ bars and it is maintained for 1 to 15 seconds. The temperature of the piston 13, when it comes to compress the powder 2, is of the order of 1ØØ to 3ØØ ° C. Under these conditions, the binder distributes better and faster within the particles constituting the base of the powder. One obtains a cohesion of the resulting compact 8 at least equivalent to that which would have been obtained with the use of a normal amount of binder, for a conventional compaction without heat input. In addition, the texture of the resulting compact is a more powdery texture, allowing easier distribution of the powder.

Après retrait du piston et retrait du manchon 5, on obtient l'ensemble représenté sur la figure 2, constitué par la coupelle 4, le compact 8 et la pellicule 11.After removing the piston and removing the sleeve 5, the assembly shown in FIG. 2 is obtained, consisting of the cup 4, the compact 8 and the film 11.

On vient alors placer cet ensemble, en position retournée, comme représenté sur la figure 3, dans un boîtier 15 dont le fond plein 16 est raccordé à une paroi latérale 17, la section droite intérieure de ce boîtier 15 étant égale ou légèrement supérieure à la section droite de la coupelle 4.This assembly is then placed, in the inverted position, as shown in FIG. 3, in a housing 15 whose solid bottom 16 is connected to a side wall 17, the internal cross section of this housing 15 being equal to or slightly greater than the cross section of the cup 4.

Sur le fond 16 du boîtier 15, on a disposé, avant l'introduction de l'ensemble de la figure 2, une couche de colle thermofusible 18 à l'état liquide. La prise de cette colle permet de réaliser la fixation du compact 8 sur le fond 16 du boîtier 15 ; par ailleurs, la colle thermofusible 18, alors qu'elle est encore liquide, remonte latéralement contre la paroi 17, pour assurer une solidarisation totale de la coupelle 4 et du boîtier 15.Before the introduction of the assembly of FIG. 2, on the bottom 16 of the housing 15, a layer of hot-melt adhesive 18 has been placed in the liquid state. Taking this adhesive allows the compact 8 to be fixed to the bottom 16 of the housing 15; moreover, the hot-melt adhesive 18, while it is still liquid, rises laterally against the wall 17, in order to ensure total attachment of the cup 4 and of the housing 15.

A l'utilisation, on retire d'un seul tenant la pellicule 11 en se saisissant de la languette 12 et on a alors accès au compact 8 à travers l'ouverture 9 de la coupelle. L'accès au produit compact se fait ici par la par­tie la moins dure du compact 8, en raison du mode de forma­tion de ce dernier, ce qui contribue encore à la facilité de prélèvement du produit par l'utilisateur. Par ailleurs, sont cachés à la vue les eventuels défauts de la bordure du com­pact 8, cette bordure étant recouverte par la périphérie du fond 6.In use, the film 11 is removed in one piece by grasping the tongue 12 and there is then access to the compact 8 through the opening 9 of the cup. Access to the compact product is here by the less hard part of the compact 8, due to the mode of formation of the latter, which further contributes to the ease of removal of the product by the user. Furthermore, any defects in the edge of the compact 8 are hidden from view, this edge being covered by the periphery of the bottom 6.

Dans le conditionnement de la figure 3, le collage du compact 8 sur le fond 16 du boîtier 15, évite une fis­suration malencontreuse du compact 8 soit à l'usage, lorsque l'utilisateur est amené à appuyer sur le compact 8, soit au moment du transport.In the packaging of FIG. 3, the bonding of the compact 8 to the bottom 16 of the housing 15, avoids inadvertent cracking of the compact 8 either in use, when the user is required to press the compact 8, or at the time of transportation.

Sur la figure 4, on a représenté une variante de réalisation suivant laquelle la contre-plaque 3a comporte, dans sa région venant en regard de l'ouverture 9 du fond 6 dela coupelle 4, une forme légèrement concave. De cette façon, on obtient un compact 8 légèrement en saillie à travers l'ouverture 9, donnant ainsi un effet esthétique du conditionnement résultant.In Figure 4, there is shown an alternative embodiment according to which the counter plate 3 a has, in its region facing the opening 9 of the bottom 6 of the cup 4, a slightly concave shape. In this way, a compact 8 is obtained which projects slightly through the opening 9, thus giving an aesthetic effect to the resulting packaging.

Sur la figure 5, on a illustré une autre possi­bilité offerte par la présente invention, à savoir celle de prévoir, dans l'enceinte 1, sur le fond 6 de la coupelle 4, une barrette de séparation transversale 19 ménagée entre les bords du fond 6 délimitant l'ouverture 9. Cette barrette 19 constitue une séparation permettant l'introduction, dans l'enceinte, de deux types de substances pulvérulentes, 2a, 2b, différant par exemple par la couleur des pigments qu'elles contiennent, et constituant, par exemple, des pro­duits de maquillage complémentaires. La barrette 19 peut présenter une forme incurvée donnant aussi une note esthétique au conditionnement final du compact 8.FIG. 5 illustrates another possibility offered by the present invention, namely that of providing, in enclosure 1, on the bottom 6 of the cup 4, a transverse separation bar 19 formed between the edges of the bottom. 6 delimiting the opening 9. This bar 19 constitutes a separation allowing the introduction, into the enclosure, of two types of pulverulent substances, 2 a , 2 b , differing for example by the color of the pigments which they contain, and constituting, for example, complementary makeup products. The bar 19 may have a curved shape also giving an aesthetic note to the final packaging of the compact 8.

Il est bien entendu que les modes de réalisation ci-dessus décrits ne sont aucunement limitatifs et pourront donner lieu à toutes modifications désirables, sans que l'on s'écarte pour autant du cadre de la présente invention ; en particulier, l'utilisation de coupelles avec un fond est possible, ce procédé étant donc applicable au compactage classique ou au compactage inverse défini dans la demande de brevet français déposé par la société déposante le même jour que la présente demande.It is understood that the embodiments described above are in no way limiting and may give rise to any desirable modifications, without departing from the scope of the present invention; in particular, the use of cups with a bottom is possible, this process therefore being applicable to conventional compaction or to reverse compaction defined in the French patent application filed by the applicant company on the same day as the present application.

Claims (18)

1 - Procédé pour le compactage d'une préparation cosmetique à base de poudre (2 ; 2a - 2b), suivant lequel on place une quantité de ladite préparation pulvérulente (2 ; 2a - 2b) dans une enceinte (1) qui est ouverte à sa partie supérieure et dont la partie inférieure est délimitée par une coupelle (4) destinée à contenir, en fin d'opération, la préparation cosmétique compacte résultante (8 ; 8a- 8b), et on réalise la compression de la préparation (2 ; 2a - 2b) à l'aide d'un piston de compactage (13) se déplaçant dans ladite enceinte (1) sensiblement perpendiculairement au plan moyen de la couche de ladite préparation pulvérulente (2 ; 2a - 2b), caractérisé par le fait qu'on effectue le compac­tage à chaud.1 - Method for compacting a cosmetic powder-based preparation (2; 2 a - 2 b ), according to which a quantity of said powdery preparation (2; 2 a - 2 b ) is placed in an enclosure (1) which is open at its upper part and whose lower part is delimited by a cup (4) intended to contain, at the end of the operation, the resulting compact cosmetic preparation (8; 8 a - 8 b ), and compression is carried out of the preparation (2; 2 a - 2 b ) using a compacting piston (13) moving in the said enclosure (1) substantially perpendicular to the mean plane of the layer of the said pulverulent preparation (2; 2 a - 2 b ), characterized in that the hot compaction is carried out. 2 - Procédé selon la revendication 1, caractérisé par le fait qu'on utilise un piston de compactage (13) équipé d'un dispositif chauffant (14).2 - Method according to claim 1, characterized in that one uses a compacting piston (13) equipped with a heating device (14). 3 - Procédé selon la revendication 2, caractérisé par le fait qu'on règle la température du piston de compac­tage (13) à une valeur comprise entre 40 et 3ØØ°C.3 - Method according to claim 2, characterized in that the temperature of the compacting piston (13) is adjusted to a value between 40 and 3ØØ ° C. 4 - Procédé selon l'une des revendications 1 à 3, caractérisé par le fait qu'on utilise une préparation cosmétique pulvérulente qui renferme de 2 à 15% en poids d'au moins un liant.4 - Method according to one of claims 1 to 3, characterized in that a powdery cosmetic preparation is used which contains from 2 to 15% by weight of at least one binder. 5 - Procédé selon la revendication 4, caractérisé par le fait qu'on utilise un (ou des) liant(s) conditionné(s) en microcapsules.5 - Method according to claim 4, characterized in that one uses (or) binder (s) conditioned (s) in microcapsules. 6 - Procédé selon l'une des revendications 4 et 5, caractérisé par le fait que, pour une préparation cosmétique pulvérulente donnée (2 ; 2a - 2b, on choisit un taux de liant inférieur ou égal à celui qui serait choisi pour un compactage sans apport de chaleur.6 - Method according to one of claims 4 and 5, characterized in that, for a given powdery cosmetic preparation (2; 2 a - 2 b , one chooses a rate of binder less than or equal to that which would be chosen for a compaction without heat input. 7 - Procédé selon l'une des revendications 4 à 6, caracterisé par le fait qu'on utilise au moins un liant à caractère hydrophobe.7 - Method according to one of claims 4 to 6, characterized in that one uses at least one binder of hydrophobic nature. 8 - Procédé selon l'une des revendications 1 à 7, dans lequel la coupelle (4) est destinée à constituer, avec la préparation cosmétique compacte (8 ; 8a - 8b), un élément de conditionnement de cette dernière, caractérisé par le fait qu'on utilise une coupelle (4) dont le fond (6) com­porte au moins une ouverture (9), l'enceinte (1) étant délimitée, dans la région de ladite (ou desdites) ouverture(s) (9) par une contre-plaque de base (3 ; 3a) sur laquelle repose ladite coupelle (4), la surface de la préparation cosmétique compacte (8 ; 8a - 8b), qui est accessible par ladite (ou lesdites) ouverture(s) (9), con­stituant, dans le conditionnement final de la préparation cosmétique compacte (8 ; 8a - 8b), la surface de prélèvement, par l'utilisateur, de ladite préparation.8 - Method according to one of claims 1 to 7, in which the cup (4) is intended to constitute, with the compact cosmetic preparation (8; 8 a - 8 b ), a packaging element for the latter, characterized in that a cup (4) is used whose base (6) comprises at least one opening (9), the enclosure (1) being delimited in the region of said (or said) opening (s) (9) against a base-plate (3; 3a ) on which rests said cup (4), the surface of the compact cosmetic preparation (8; 8 a - 8 b ), which is accessible by said (or said) opening (s) (9), constituting, in the final packaging of the compact cosmetic preparation (8; 8 a - 8 b ), the surface for sampling, by the user, of said preparation. 9 - Procédé selon la revendication 8, caractérisé par le fait qu'on utilise une coupelle (4) dont la (ou les) ouverture(s) (9) est (ou sont) pratiquée(s) dans la partie centrale du fond (6), la région de bordure de la préparation cosmétique compacte (8 ; 8a - 8b) étant protégée de l'extérieur, dans le conditionnement final par la zone périphérique du fond (6) de ladite coupelle (4).9 - Method according to claim 8, characterized in that a cup (4) is used whose (or) opening (s) (9) is (or are) made (s) in the central part of the bottom ( 6), the border region of the compact cosmetic preparation (8; 8 a - 8 b ) being protected from the outside, in the final packaging by the peripheral zone of the bottom (6) of said cup (4). 10 - Procédé selon l'une des revendications 8 ou 9, caractérisé par le fait qu'on utilise une contre-plaque de base (3a) dont la surface venant en regard de la (ou de chaque) ouverture (9) du fond (6) de la coupelle (4) est légèrement concave, pour donner à la (ou à chaque) zone accessible de la préparation cosmétique compacte (8 ; 8a - 8b), une surface légèrement convexe, en saillie par rapport au plan de la paroi externe du fond (6) de la coupelle (4).10 - Method according to one of claims 8 or 9, characterized in that use is made against a base plate (3 a) whose surface coming opposite the (or each) aperture (9) of the bottom (6) of the cup (4) is slightly concave, to give the (or each) accessible area of the compact cosmetic preparation (8; 8 a - 8 b ), a slightly convex surface, projecting from the plane of the outer wall of the bottom (6) of the cup (4). 11 - Procédé selon l'une des revendications 8 à 10, caractérisé par le fait qu'on dispose, entre le fond (6) de la coupelle (4) et la contre-plaque de base (3 ; 3a), une pellicule souple de protection (11) capable de rester soli­daire de ladite coupelle (4) et de son contenu (8 ; 8a - 8b) après le compactage.11 - Method according to one of claims 8 to 10, characterized in that there is, between the bottom (6) of the cup (4) and the base plate (3; 3 a ), a film flexible protection (11) capable of remaining integral with said cup (4) and its contents (8; 8 a - 8 b ) after compaction. 12 - Procédé selon la revendication 11, caractérisé par le fait qu'on utilise une pellicule (11) collée ou soudée sur la bordure externe du fond (6) de la coupelle (4) ou une pellicule (11) totalement adhésive sur sa surface venant en regard dudit fond (6), ladite pellicule (11) réalisant ainsi l'inviolabilité de la préparation cosmétique compacte (8 ; 8a - 8b) de la coupelle (4) associée.12 - Process according to claim 11, characterized in that a film is used (11) glued or welded to the outer edge of the bottom (6) of the cup (4) or a completely adhesive film (11) on its surface facing said bottom (6), said film (11) thus achieving the inviolability of the compact cosmetic preparation (8; 8 a - 8 b ) of the associated cup (4). 13 - Procédé selon l'une des revendications 11 ou 12, caractérisé par le fait qu'on utilise une pellicule (11) arrachable d'un seul tenant grâce à une languette latérale de préhension (12).13 - Method according to one of claims 11 or 12, characterized in that one uses a film (11) tearable in one piece with a side gripping tab (12). 14 - Procédé selon l'une des revendications 8 à 13, caractérisé par le fait qu'on dispose, dans l'espace interne de l'enceinte (1), au moins une barrette (19) qui sépare des préparations cosmétiques pulvérulentes de différentes natures (2a - 2b) et qui repose sur la contre-­plaque (3a) en traversant l'ouverture (ou au moins une des ouvertures) du fond (6) de la coupelle, et que l'on compacte simultanément ces préparations.14 - Method according to one of claims 8 to 13, characterized in that there is, in the internal space of the enclosure (1), at least one bar (19) which separates powdery cosmetic preparations from different natures (2 a - 2 b ) and which rests on the counter-plate (3 a ) by crossing the opening (or at least one of the openings) of the bottom (6) of the cup, and which these compacts simultaneously preparations. 15 - Procédé selon l'une des revendications 8 à 14, caractérisé par le fait qu'on dépose une couche de colle liquide sur le fond (16) d'un boîtier (15) capable de recevoir par emboîtement la coupelle (4) renfermant la préparation compacte (8 ; 8a - 8b), le fond (6) de ladite coupelle (4) étant tourné vers l'extérieur, et on laisse durcir ladite colle pour assurer la fixation de la coupelle (4) sur le fond (16) du boîtier (15) et sur la bordure interne inférieure de la paroi latérale (17) dudit boîtier (15).15 - Method according to one of claims 8 to 14, characterized in that a layer of liquid adhesive is deposited on the bottom (16) of a housing (15) capable of receiving by interlocking the cup (4) containing the compact preparation (8; 8 a - 8 b ), the bottom (6) of said cup (4) being turned outwards, and said glue is allowed to harden to ensure the fixing of the cup (4) on the bottom (16) of the housing (15) and on the lower internal edge of the side wall (17) of said housing (15). 16 - Procédé selon l'une des revendications 8 à 1Ø, caractérisé par le fait qu'on dispose, entre le fond (6) de la coupelle (4) et la contre-plaque de base (3 ; 3a), un opercule rigide capable de rester solidaire de ladite coupelle (4) après le compactage.16 - Method according to one of claims 8 to 1Ø, characterized in that there is, between the bottom (6) of the cup (4) and the base plate (3; 3a), a rigid cover capable of remaining integral with said cup (4) after compaction. 17 - Procédé selon l'une des revendications 1 ou 2, caractérisé par le fait qu'on préchauffe avant le compac­tage à chaud la coupelle (4) et la préparation cosmétique (8 ; 8a - 8b).17 - Method according to one of claims 1 or 2, characterized in that the cup (4) and the cosmetic preparation are preheated before hot compaction (8; 8 a - 8 b ). 18 - Préparation cosmétique compacte, obtenue par le procédé selon l'une des revendications 1 à 17.18 - Compact cosmetic preparation, obtained by the process according to one of claims 1 to 17.
EP88402273A 1987-09-29 1988-09-09 Method for compacting a powder-based cosmetic preparation Expired - Lifetime EP0310471B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8713424A FR2621007B1 (en) 1987-09-29 1987-09-29 PROCESS FOR THE COMPACTION OF A POWDER-BASED COSMETIC PREPARATION
FR8713424 1987-09-29

Publications (2)

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EP0310471A1 true EP0310471A1 (en) 1989-04-05
EP0310471B1 EP0310471B1 (en) 1991-12-04

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EP88402273A Expired - Lifetime EP0310471B1 (en) 1987-09-29 1988-09-09 Method for compacting a powder-based cosmetic preparation

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US (1) US4962626A (en)
EP (1) EP0310471B1 (en)
JP (1) JPH01106808A (en)
CA (1) CA1305061C (en)
DE (1) DE3866663D1 (en)
ES (1) ES2026677T3 (en)
FR (1) FR2621007B1 (en)

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FR2666047A1 (en) * 1990-08-24 1992-02-28 Guiard Jacques Method for obtaining compacted (pressed) powders packaged in containers; installation for implementing this method; container intended for packaging pressed powders
EP0526300A1 (en) * 1991-07-29 1993-02-03 L'oreal Process for manufactering an applicator unit containing a cosmetic sampler

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US6358448B1 (en) * 1999-12-06 2002-03-19 Loretta V. Green Apparatus and method for reclaiming make-up
ITMI20060518A1 (en) * 2006-03-22 2007-09-23 Intercos Italiana PROCEDURE OF PREPARATION OF COSMETIC PRODUCTS WITH POWDERS OF DIFFERENT CHARACTERISTICS
US20140023848A1 (en) * 2012-07-20 2014-01-23 Agostinho Martins Method For Making A Biodegradable And Compostable Component For Cosmetic Packaging
JP6409270B2 (en) * 2013-11-29 2018-10-24 花王株式会社 Cosmetic containers and cosmetic products
KR102288473B1 (en) * 2014-03-14 2021-08-09 주식회사 엘지생활건강 Filling Apparatus of Cosmetic Composition

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Also Published As

Publication number Publication date
ES2026677T3 (en) 1992-05-01
CA1305061C (en) 1992-07-14
FR2621007A1 (en) 1989-03-31
JPH01106808A (en) 1989-04-24
FR2621007B1 (en) 1990-03-23
EP0310471B1 (en) 1991-12-04
DE3866663D1 (en) 1992-01-16
US4962626A (en) 1990-10-16

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