Classifications

• • 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
  • A45D40/00—Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
  • A45D40/26—Appliances specially adapted for applying pasty paint, e.g. using roller, using a ball
  • A45D40/262—Appliances specially adapted for applying pasty paint, e.g. using roller, using a ball using a brush or the like
  • A45D40/265—Appliances specially adapted for applying pasty paint, e.g. using roller, using a ball using a brush or the like connected to the cap of the container
  • A45D40/267—Appliances specially adapted for applying pasty paint, e.g. using roller, using a ball using a brush or the like connected to the cap of the container comprising a wiper
• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46B—BRUSHES
  • A46B9/00—Arrangements of the bristles in the brush body
  • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
  • A46B9/021—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups arranged like in cosmetics brushes, e.g. mascara, nail polish, eye shadow

Definitions

• the present invention relates mainly to a packaging intended to contain a cosmetic product, liquid or pasty, in particular mascara.
• a packaging for a cosmetic product such as mascaras, eyeshadows, lip glosses or highlighters, usually consists of an open vial provided with a wringer in flexible material and with a capsule on which is fixed a rod terminated by an applicator to apply the product contained in the bottle, for example a brush or comb of mascara, a brush or a foam tip.
• the capsule is screwed onto the bottle.
• an internal lip of the wringer extending radially, comes into contact with the applicator to remove the excess product.
• the seal is ensured between the capsule 2 and the neck of the bottle 1 by means of the wiper 3 which is usually used as a seal due to its flexibility.
• the deformation of the wiper 3 is axial and essentially localized (axial force F ⁇ on the peripheral rib 4 of the capsule.
• tightening is only effective if the locking force is high enough.
• the relatively complex contact surfaces S1 and S2, between the capsule 2 and the wiper 3, and between the wiper 3 and the neck of the bottle 1 generate solvent leaks by capillary action.
• overly vigorous tightening deteriorates the contact range by permanent deformation (creep of the plastic): the effectiveness of subsequent closings is degraded.
• the variant illustrated by the sectional views of FIGS. 2 and 2a, makes it possible to multiply the contact force between the capsule 2 and the wiper 3 by the cone shape of the rod head 20 of the capsule.
• This cone effect makes it possible to ensure a seal by a lower clamping force than in the previous case, but the cone effect induces a radial deformation (component F r of the contact force F 2 ) of the wringer assembly - bottle neck, which increases sharply until disturbing the functioning of the thread, following repeated openings and closings carried out by the user.
• the capillary leakage surfaces S2 and S3 also remain large and the creep deformation of the plastic material is accelerated.
• the subject of the invention is a packaging for cosmetic product, in particular for mascara, comprising a small bottle on which a wringer is mounted, the small bottle having a neck opening onto an opening, and a capsule coupled to a rod on which is mounted a brush.
• the sealing of this packaging is ensured by radial annular contact of the capsule directly on the neck of the bottle.
• the radial annular contact is made between a circumferential ribbing of the capsule and a cylindrical region of the bottle neck, the surface qualities of which are regulated;
• the capsule / vial junction is advantageously located on surfaces of simple geometry between the circumferential ribbing and the cylindrical zone.
• the quality of the junction can be optimized by finishing work on the molds, in particular on the dimensional precision, the geometry and the surface condition of the molding parts relating to the circumferential ribbing of the capsule and to the cylindrical zone of the neck of the bottle.
• any technical element which induces surface irregularities such as joint plane, ejector, vent, etc., is excluded on these molding parts.
• the sealing contact forces being radial, they induce a conformation of the contact surfaces one on the other, without axial component which would on the contrary tend to separate the capsule from the vial.
• Such a shaping effect also makes it possible to equalize the micro-irregularities of the surface and to stabilize the forces, while compensating for the dimensional tolerances of production.
• This effect can be advantageously reinforced by an over-adjustment of the tightening of the ribbing diameter on the diameter of the neck of the bottle, taking into account the hardness of the material and its resistance to creep.
• the junction between the vial and the capsule has sufficient adjustment tolerance to eliminate any unsightly play between the capsule and the shoulder of the neck of the vial.
• this tolerance makes it possible to align by screwing the capsule on the vial so as to adjust a particular shape, such as square, polygonal, oval, etc., of these parts.
• the locking between the cap and the vial can be done either conventionally by screwing or by axial clipping the cap on the vial to facilitate locking / unlocking of the package.
• the screwing and clipping are carried out outside the sealing surfaces according to the invention.
• the invention also relates to the packaging manufacturing technique.
• a bottle of this type is produced by injection / blowing or extrusion / blowing.
• blowing imposes certain types of "blown" shape and can therefore limit the chemical composition of plastics to those which have a glass transition, for example polypropylene or polyethylene.
• Another object of the invention is to remedy these drawbacks, in particular it aims to obtain a higher surface finish where great precision is required for sealing.
• polystyrenics for example in ABS (Acrylo-Butadiene-Styrene) or SAN (Styrene-Acrylo-Nitrile)
• polyesters for example PET (Poly-Ethylene-Terephthalate) or PEN (Poly-Ethylene-Naphtalate)
• polyolefins such as PP (Poly - Propylenes) or PE (Poly-Ethylenes) or acetals, such as POM (Poly-Oxy-Methylene).
• the wider choice of usable materials also makes it possible to widen the formulas of the products to be used, avoiding possible reactions while reducing permeability through the walls by migration of the solvent.
• Another object of the invention is to implement a technology as simple as possible.
• the present invention also aims to allow the integration of everything. type of applicators, such as brush or applicator - foam, and to allow a break in the habits of use of this type of packaging by causing a novelty effect.
• type of applicators such as brush or applicator - foam
• the invention proposes to carry out molding in one piece by the technique of either simple blowing, in particular extrusion / blowing or injection / blowing, or by simple injection of plastic material, that is to say without blowing, at at least one point located outside the sealing zone but, advantageously, as close as possible to the opening of the vial. Under these conditions, the injection process guarantees the best possible precision in the sealing zone.
• the rod and the capsule are produced by injection of the same molding forming a single piece;
• the material used to carry out the packaging is taken from polystyrenes, polyolefins, polyesters, and polyacetals.
• the wringer can be produced by injection in the traditional way, which extends the choice of plastic used (polyethylene (PE), polypropylene (PP) or an elastomer) depending on the desired spin hardness.
• the wiper is assembled on the bottle generally by clipping.
• the packaging according to the invention is also particularly suitable for oblong or elongated shapes, but may also be suitable for producing shapes which are difficult to produce by the usual methods, for example the square or polygonal shape with sharp angles.
• the continuity of any shape between the capsule and the small bottle is then preserved by adjusting the capsule on the small bottle, whether by screwing or by clipping.
• the control of the thickness of the walls of the vial thanks to the injection molding technique used makes it possible to substantially improve the seal by weight loss, as well as the regularity of the decorations which can be produced on these walls.
• the decoration can advantageously cover the entire surface, for example by applying hues by printing vignettes ("vignetting") by lithography or by offset process, by integrating different elements, for example the bar code or at least one window without decoration. when the material is transparent, to visualize the color of the product contained in the bottle.
• FIG. 4 a front view of a capsule, according to the invention, provided with a rod and an applicator in the form of a brush;
• FIG. 7 and 7a a longitudinal sectional view with a partial enlargement of another example of packaging according to the present invention, in the case of a screw closure.
• an example of a vial according to the invention is in the form of an elongated tube 1, substantially cylindrical around an axis X'X.
• Tube 1 contains a cosmetic product, mascara in the exemplary embodiment.
• a closed end portion 10 of the tube is formed of a substantially spherical cap which is extended by a cylindrical body 11 with an external diameter equal to 14 mm.
• This cylindrical body 11 is extended by another cylindrical body 12 of open end 14, and of slightly smaller external diameter, equal to 12.5 mm in this example.
• This tube 12 has a circular contact by a radial bulge 13, of maximum external diameter approximately 13 mm. This bulge 13 forms a rib to define a clipping zone for the capsule described below.
• FIG. 4 illustrates, in front view, a hollow capsule 2 of revolution about an axis which merges with the axis X'X of the bottle 1 after assembly, the hollow capsule being coupled to a rod 20 also centered around of the same axis. On this rod 20, a brush 21 is mounted, suitable for collecting the mascara contained in the bottle.
• the assembly has the appearance illustrated in FIG. 5.
• the capsule 2 and the rod 20 are formed in one piece from molding.
• the clipping of the capsule 2 on the bottle 1 is carried out as illustrated more precisely on the enlargement of FIG. 6a, from the boss 13 which cooperates with a groove 22 and a boss 23 formed on the internal face 2i of the capsule 2 .
• the internal face 2i of the capsule 2 has an annular boss 24, disposed near the open end 14 of the bottle 1. The thickness of this boss 24 is adjusted so that the contact surface of the boss comes to press tightly against the external face 1e of the vial 1.
• the capsule and the rod are formed from two assembled or joined parts (welding, bonding, etc.).
• the capsule cooperates with the rod by their contact surfaces which ensure a tight mounting of the rod in the capsule by producing a rod end with an external diameter very slightly greater than the internal diameter of the capsule at the level of the contact zone.
• the invention is not limited to locking by clipping. In this example, the locking is achieved by traditional screwing 100.
• the radial sealing annular contact is produced by the annular boss 24 of the capsule which makes contact, in close fit, on a cylindrical region 101, having a high precision surface condition, and forming the upper part of the neck 12 of the flask 1. Because the sealing contact is exerted radially (force F 3 ), the contact surfaces conform to one another without undergoing axial deformations.
• the junction between bottle and capsule S4 is precisely controlled, without play, because of the tolerance offered by the width of the zone 101 on which the sealing is adjusted.
• All the parts constituting the packaging according to the invention namely the flask, the capsule, the rod and the wringer, are produced by injection molding, without blowing.
• Such a process makes it possible, from injection nozzles, to form plastic parts, in suitable molds, and at temperatures corresponding to the plastic material used.
• a number of suitable parts, for example 24, are produced simultaneously from drawers in which the molds are arranged.
• the injection points at the end of the oriented nozzles are advantageously distributed regularly and radially at one end of the mold corresponding to an area whose thickness must be rigorously calibrated, for example when, as in the present case, this critical zone corresponds to a sealing zone.
• the closed mold has a vent point for the evacuation of the air contained in the mold during the introduction of the mandrel. During cooling, the shrinkage of material then occurs on the side opposite the injection zone, that is to say far from the critical zone.
• the materials used for the vial and the stem cap are, in the embodiment, PP or POM, and for the wringer PEBD (Polyethylene butadiene).
• the mold opening drawers for demolding the core formed during the injection makes it possible to produce the radial sealing rib.
• the recesses formed by the withdrawal of the material used during cooling do not form on the side of the sealing and seating areas of the wiper.

Landscapes

• Closures For Containers (AREA)
• Cosmetics (AREA)
• Packages (AREA)
• Injection Moulding Of Plastics Or The Like (AREA)
• Wrappers (AREA)
• Details Of Rigid Or Semi-Rigid Containers (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=8858512

Family Applications (2)

Family Applications Before (1)

Country Status (9)

Families Citing this family (3)

Family Cites Families (8)

• 2001
  • 2001-01-04 FR FR0100071A patent/FR2818879B1/fr not_active Expired - Fee Related
  • 2001-12-05 EP EP01272694A patent/EP1347697B1/de not_active Expired - Lifetime
  • 2001-12-05 WO PCT/FR2001/003836 patent/WO2002052981A1/fr not_active Application Discontinuation
  • 2001-12-05 DK DK01272693T patent/DK1347696T3/da active
  • 2001-12-05 PT PT01272693T patent/PT1347696E/pt unknown
  • 2001-12-05 DE DE60134571T patent/DE60134571D1/de not_active Expired - Lifetime
  • 2001-12-05 AT AT01272694T patent/ATE273636T1/de not_active IP Right Cessation
  • 2001-12-05 EP EP01272693A patent/EP1347696B1/de not_active Expired - Lifetime
  • 2001-12-05 ES ES01272694T patent/ES2227064T3/es not_active Expired - Lifetime
  • 2001-12-05 AT AT01272693T patent/ATE398947T1/de not_active IP Right Cessation
  • 2001-12-05 WO PCT/FR2001/003835 patent/WO2002052980A1/fr active IP Right Grant
  • 2001-12-05 ES ES01272693T patent/ES2309034T3/es not_active Expired - Lifetime
  • 2001-12-05 DE DE60105059T patent/DE60105059T2/de not_active Expired - Lifetime
• 2003
  • 2003-11-20 HK HK03108466A patent/HK1056105A1/xx not_active IP Right Cessation

Non-Patent Citations (1)

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