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WO2010012799A2 - Procédé de production d’un premier récipient pour un produit cosmétique, moule, col et récipient associés - Google Patents

Procédé de production d’un premier récipient pour un produit cosmétique, moule, col et récipient associés Download PDF

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Publication number
WO2010012799A2
WO2010012799A2 PCT/EP2009/059851 EP2009059851W WO2010012799A2 WO 2010012799 A2 WO2010012799 A2 WO 2010012799A2 EP 2009059851 W EP2009059851 W EP 2009059851W WO 2010012799 A2 WO2010012799 A2 WO 2010012799A2
Authority
WO
WIPO (PCT)
Prior art keywords
receptacle
neck
mould
introduction
screw thread
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2009/059851
Other languages
English (en)
Other versions
WO2010012799A3 (fr
Inventor
Luc Maelstaf
Marine Abou
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LOreal SA
Original Assignee
LOreal SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LOreal SA filed Critical LOreal SA
Publication of WO2010012799A2 publication Critical patent/WO2010012799A2/fr
Publication of WO2010012799A3 publication Critical patent/WO2010012799A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/42—Moulds for making articles of definite length, i.e. discrete articles for undercut articles
    • 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
    • A45D19/00—Devices for washing the hair or the scalp; Similar devices for colouring the hair
    • A45D19/02—Hand-actuated implements, e.g. hand-actuated spray heads
    • A45D19/026—Hand-actuated implements, e.g. hand-actuated spray heads having brush or comb applicators
    • 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
    • A45D34/00—Containers or accessories specially adapted for handling liquid toiletry or cosmetic substances, e.g. perfumes
    • A45D34/04—Appliances specially adapted for applying liquid, e.g. using roller or ball
    • 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
    • A45D40/24—Casings for two or more cosmetics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/42—Closures with filling and discharging, or with discharging, devices with pads or like contents-applying means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/32—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging two or more different materials which must be maintained separate prior to use in admixture
    • B65D81/3205—Separate rigid or semi-rigid containers joined to each other at their external surfaces
    • B65D81/3211—Separate rigid or semi-rigid containers joined to each other at their external surfaces coaxially and provided with means facilitating admixture
    • 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
    • A45D2200/00—Details not otherwise provided for in A45D
    • A45D2200/05—Details of containers
    • A45D2200/058—Means for mixing different substances prior to application
    • 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
    • A45D2200/00—Details not otherwise provided for in A45D
    • A45D2200/25—Kits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/42—Moulds for making articles of definite length, i.e. discrete articles for undercut articles
    • B29C2043/425—Moulds for making articles of definite length, i.e. discrete articles for undercut articles mould parts or sliders being movable independently from the mould halves for making undercut portions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25—Solid
    • B29K2105/253—Preform
    • B29K2105/258—Tubular
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2001/00—Articles provided with screw threads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/20—Flexible squeeze tubes, e.g. for cosmetics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages

Definitions

  • the present invention relates to a method for producing a neck for a first receptacle for a cosmetic product.
  • a neck of this type is suitable for sealing a first receptacle containing a first cosmetic product, to which a second receptacle containing a second cosmetic product is to be coupled by screwing.
  • cosmetic product is to be in particular understood within the meaning of the present invention as a product defined in Council Directive 93/35/EEC of 14th June 1993.
  • Receptacles of this type are used in particular for preparing cosmetic compositions containing two cosmetic products before being mixed immediately prior to the application thereof on a user.
  • the cosmetic composition is an oxidation dye for hair.
  • the first cosmetic product is formed by a colorant and the second cosmetic product is formed by an oxidant.
  • the first cosmetic product in a first receptacle of large volume formed from plastics material for example, and to place the more reactive second cosmetic product in a compressible metal tube provided at the end thereof with a distribution fitting.
  • the first receptacle comprises a neck of the aforementioned type having a coupling skirt which defines a passage for introducing the second receptacle.
  • the skirt is provided with an internal screw thread projecting into the introduction passage to enable the second receptacle to be screwed in.
  • the user When the user wishes to prepare the cosmetic composition, he takes the second receptacle and screws the end fitting thereof into the interior of the coupling skirt of the first receptacle. The user then compresses the flexible tube forming the second receptacle to cause the second cosmetic product contained in the second receptacle to pass into the interior volume defined by the first receptacle.
  • a known preparation device is disclosed in the French application FR-A-2 685 301 for example.
  • the first receptacle of this device is provided with a neck having a coupling skirt provided with a continuous internal screw thread for screwing the tube thereto. It further comprises a peripheral skirt provided with an external screw thread for screwing a cap onto the first receptacle before inserting the tube.
  • a neck of this type is thus difficult to produce by moulding, since the internal thread and the external thread present on the neck form back-draft on undercut portions which require careful removal from the mould. It is thus necessary to provide a complex mould to allow the internal screw thread to be removed, for example by unscrewing a movable core from the mould.
  • a mould of this type is costly and does not allow the productivity of the production method to be optimised since unscrewing the movable core increases the cycle time.
  • An object of the invention is therefore to provide a method for producing a neck for a first receptacle which enables easy coupling to a second receptacle to be achieved, the method being simple to implement while still permitting the neck to be produced at a low cost.
  • the invention relates to a method of the aforementioned type, the neck being of the type comprising:
  • the coupling skirt comprising:
  • an internal screw thread for screwing the end fitting of the second receptacle into the sleeve, the internal screw thread projecting into the introduction passage towards the introduction axis from the sleeve, the internal screw thread being of a substantially helical shape at least before a second receptacle is first screwed into the first receptacle
  • the method comprising the following steps: * introducing a deformable material into a moulding cavity of a mould, the moulding cavity being of a shape substantially complementary to that of the neck at least in the closed position of the mould, the mould comprising at least one movable core delimiting an internal impression which is to form the internal screw thread; * at least partially solidifying the deformable material to form the neck, the movable core extending into the introduction passage defined by the sleeve of the coupling skirt;
  • the method according to the invention may comprise one or more of the following features, taken in isolation or in any technically feasible combination:
  • the forcible removal comprises moving the movable core in translation relative to the sleeve along the introduction axis without rotation about the introduction axis; - it comprises, before the introduction step, placing in the mould a hollow container having an outer edge disposed in the mould cavity, the deformable material coming into contact with the outer edge so as to join the base wall of the neck to the hollow container during the solidification step;
  • the internal impression of the movable core comprises a plurality of disjointed impression regions, the neck having, after the solidification step, an internal screw thread comprising a plurality of disjointed threads of a shape complementary to the disjointed regions, the disjointed threads being spaced angularly from one another about the introduction axis;
  • the invention further relates to a mould for producing a neck for a first receptacle for a cosmetic product, the neck being of the type comprising:
  • the mould being characterised in that it comprises a first mould half and a second mould half which are movable relative to one another between an open position of the mould and a closed position of the mould, in which the first mould half and the second mould half delimit a moulding cavity of a shape complementary to the shape of the neck, the first mould half comprising a movable core delimiting an internal impression which is to form the internal screw thread, the core being movable during the removal from the mould of the neck relative to at least one of the first mould half and the second mould half between a position inserted into the introduction passage of the coupling skirt and a position extracted from the introduction passage of the coupling skirt to remove the movable
  • the mould according to the invention may comprise one or more of the following features taken in isolation or in any technically feasible combination:
  • the movable core can be moved in translation relative to the sleeve along the introduction axis without rotation about the introduction axis during the removal of the neck from the mould;
  • the internal impression of the movable core comprises a plurality of disjointed impression regions for forming on the neck an internal screw thread comprising a plurality of disjointed threads spaced angularly from one another about the introduction axis;
  • the invention further relates to a neck for a first receptacle for a cosmetic product, the neck being of the type comprising:
  • the coupling skirt comprising:
  • an internal screw thread for screwing the end fitting of the second receptacle into the sleeve, the internal screw thread projecting into the introduction passage towards the introduction axis from the sleeve, the internal screw thread being of a substantially helical shape at least before a second receptacle is first screwed into the first receptacle; characterised in that the screw thread comprises a plurality of disjointed threads spaced angularly from one another about the introduction axis.
  • the neck according to the invention may comprise one or more of the following features, taken in isolation or in any technically feasible combination:
  • the threads delimit between them at least one axial channel which is exposed over the entire height of the screw thread; - it comprises at least one internal stop for blocking the screwing of the second receptacle, the or each stop projecting towards the introduction axis into the introduction passage;
  • each internal blocking stop being disposed axially opposite a thread of the screw thread; - the or each stop delimits a flat extending substantially perpendicular to the introduction axis;
  • the invention further relates to a receptacle for containing a cosmetic product, characterised in that it comprises a hollow container for receiving a cosmetic product and a neck as defined above closing the hollow container.
  • the invention further relates to a device for preparing a cosmetic composition, characterised in that it comprises a first receptacle as defined above, containing a first cosmetic product, and a second receptacle containing a second cosmetic product and having an end fitting of a shape substantially complementary to the introduction passage and able to be screwed into the introduction passage.
  • the second receptacle is advantageously a tube, in particular a tube having a body and an end fitting with a diameter smaller than the maximum size of the body.
  • the invention also relates to a method for preparing a cosmetic composition, characterised in that it comprises the following steps:
  • FIG. 1 is a schematic side view of a first device for preparing a cosmetic product according to the invention comprising two receptacles to be coupled;
  • - Fig. 2 is a sectional view along a vertical median plane of the neck of the first receptacle of the device of Fig. 1 , before the second receptacle is attached;
  • - Fig. 3 is a plan view of the neck of Fig. 2;
  • - Fig. 4 is a view similar to that of Fig. 2 when the second receptacle is coupled to the first receptacle;
  • - Fig. 5 is a view of a detail of Fig. 4 showing the coupling of the second receptacle to the first receptacle;
  • - Fig. 6 is a partial perspective plan view of the neck of Fig. 2;
  • - Fig. 7 is a partial schematic sectional view along a vertical median plane of the mould for producing the neck of Fig. 2 during a first step of the production of the neck;
  • - Fig. 8 is a view similar to that of Fig. 7 during a second step of the production of the neck;
  • the terms "interior” and “exterior” refer to the receptacle and the internal volume defined thereby.
  • the terms “lower” and “upper” refer to the positioning of the receptacles in the figures which are arranged so as to allow the reference numerals to be read.
  • a first device 10 for preparing a cosmetic composition according to the invention is shown in Fig. 1.
  • This device comprises a first receptacle 12 containing a first cosmetic product, a second receptacle 14 containing a second cosmetic product intended to be mixed with the first cosmetic product, and an end fitting 16 for applying the cosmetic composition on a user, this end fitting being suitable to be connected by means of screwing to the end of the first receptacle after the products have been mixed.
  • the applicator end fitting is in the form of a comb and comprises holes for distributing the mixed product.
  • the device 10 further comprises a packaging 17 to store the containers 12,
  • the first cosmetic product and the second cosmetic product are intended to be mixed by the user to form the cosmetic composition in the first receptacle 12 immediately prior to application of said composition onto the user.
  • the composition is an oxidation dye for hair for example, the first cosmetic product and the second cosmetic product being a colorant paste and an oxidant respectively.
  • the first receptacle 12 comprises a hollow container 20, a neck 22 according to the invention which is connected to the hollow container 20, and a closure cap 24 which is screwed onto the neck 22 before the second receptacle 14 is coupled to the first receptacle 12.
  • the shape of the container 20 is generally cylindrical. It has a base 26 and a lateral wall 28 which delimits an internal volume 30 which opens out via an upper opening 32 which is closed by the neck 22.
  • the container 20 is advantageously formed in one piece from a thermoplastic synthetic material such as a polyolefin, high-density polyethylene for example.
  • the neck 22 comprises a base wall 40 in the form of a truncated cone, a central skirt 42 for coupling the second receptacle 14 to the first receptacle 12, a peripheral skirt 44 for screwing the cap 24, and a connecting wall 46 in the form of a truncated cone between the coupling skirt 42 and the peripheral skirt 44.
  • the base wall 40 has a cross-section, when viewed in any vertical median plane such as the cross-sectional plane of the figure, which converges externally towards the skirts 42, 44 away from the container 20.
  • the wall 40 extends between a lower peripheral edge 50, to which the lateral wall 28 of the container 20 is connected, and an upper edge 52 from which the peripheral skirt 44 projects upwards.
  • the base wall 40, the coupling skirt 42, the peripheral skirt 44 and the connecting wall 46 are formed in one piece by moulding a thermoplastic synthetic material such as a polyolefin, high-density polyethylene for example.
  • the central skirt 42 comprises a tubular coupling sleeve 54 which defines a central passage 56 for the introduction of the second receptacle 14, and a discontinuous screw thread 58 which projects radially into the central passage 56.
  • the sleeve 54 projects externally from the base wall 40.
  • the coupling skirt 42 comprises discontinuous stops 60 for immobilising the second receptacle 14 in the passage 56.
  • the sleeve 54 projects externally along and about the axis of introduction A- A', defined by the passage 56, from the connecting wall 46 above the base wall 40 to an external edge 61.
  • the external edge 61 of the sleeve 54 defines an axial notch 61 A for introducing air into the passage 56.
  • the notch 61 A opens upwards and through the sleeve 54.
  • the axis A-A' of the sleeve 54 and the central passage 56 is coaxial with the central vertical axis of the container 20.
  • the axes are transversely offset.
  • the introduction passage 56 opens downwards into the internal volume 30 through the opening 32 below the base wall 40. Externally, it opens upwards out of the first receptacle 12.
  • the introduction passage 56 is intended to receive an end fitting of the second receptacle 14 when it is screwed onto the first receptacle 12.
  • the introduction passage 56 allows the application end fitting 16 to be attached and the cosmetic composition contained in the internal volume 30 of the first receptacle 12 to be extracted.
  • the screw thread 58 has a helical shape with an axis A-A' extending angularly over more than one revolution, and advantageously over one and a half revolutions, about the axis A-A'.
  • the screw thread 58 is formed in a helical shape when the neck 22 is moulded, before the second receptacle 14 is first screwed into the neck 22.
  • the screw thread 58 is discontinuous. It thus comprises a plurality of continuous threads 62 which are spaced angularly from one another about the axis A-A' and run along the general helical trajectory of the screw thread 58. In this example, the threads 62 delimit between them, while running axially along an internal surface of the sleeve 54, axial channels 64 which are exposed over the entire height of the screw thread 58.
  • the threads 62 project radially towards the axis A-A' from an internal surface of the sleeve 54 which delimits the introduction passage 56.
  • the threads 62 are distributed in three disjointed angular sectors ⁇ 1 , ⁇ 2, ⁇ 3, shown in Fig. 3, about the axis A-A'. Each thread 62 is separated from an adjacent thread 62 by a longitudinal channel 64. Each thread 62 has an angular extension ⁇ 1 , ⁇ 2, ⁇ 3 greater than 15° and strictly less than 120°. In the example shown in the figures, each angular sector ⁇ 1 , ⁇ 2, ⁇ 3 about the axis A-A' comprises two threads 62 arranged one above the other and facing one another.
  • Each thread 62 comprises an internal inclined face directed towards the internal volume 32.
  • the internal face When viewed in an axial plane passing through the axis A-A', the internal face has a cross-section which is inclined by an angle of less than 50° and approximately 45° relative to the axis A-A' to facilitate the process of forcibly removing the neck 22 from the mould, as shown below.
  • the maximum radial extension of each thread 62, when viewed in the introduction passage 56 from the internal surface of the sleeve 54, perpendicularly to the axis A-A', is less than 20 %, advantageously less than 10 % of the maximum radial extension of the introduction passage 56, when viewed perpendicularly to the axis A-A' in a region without a thread 62.
  • the channels 64 are defined axially between the lateral ends of each pair of adjacent threads 62.
  • Each channel 64 extends in an angular sector ⁇ 1 , ⁇ 2, ⁇ 3 located around the axis A-A' between two angular sectors ⁇ 1 , ⁇ 2, ⁇ 3 containing threads 62.
  • Each channel 64 opens upwards and downwards. There are no back-draft portions over the entire height of the screw thread 58 between the threads 62. The process of forcibly removing the neck 22 from the mould according to the invention is thus facilitated by the presence of the channels 64, in which no part projects radially towards the axis A-A'.
  • the neck 22 comprises three immobilisation stops 60 which are distributed angularly in the angular sectors ⁇ 1 , ⁇ 2, ⁇ 3. Each stop 60 is thus positioned internally axially opposite a thread 62.
  • Each stop 60 comprises a flat 66 which extends perpendicularly to the axis A-A' along the upper edge 68 of the stop 60 towards a thread 62.
  • the flats 66 project radially towards the axis A-A' in the passage 56 so as to define a surface for immobilising the end fitting of the second receptacle 14.
  • the flats 66 extend exclusively in the angular sectors ⁇ 1 , ⁇ 2, ⁇ 3 containing the threads 62.
  • the exposed longitudinal channels 64 thus extend between the flats 66.
  • one of the threads 62 extends up to a flat
  • the peripheral skirt 44 comprises a peripheral sleeve 69 which has an axis
  • the peripheral sleeve 69 extends externally around and at a distance from the coupling sleeve 54.
  • the peripheral sleeve 69 has an external screw thread 70 which projects radially at a distance from the axis A-A' from an external surface of the sleeve 69 to enable the cap 24 to be screwed on.
  • the connecting wall 46 has a cross-section, when viewed in any median vertical plane, which converges towards the container 20.
  • the wall extends radially between a median portion of the peripheral sleeve 69 and the lower edge of the coupling sleeve 54 over the entire periphery of the sleeves 54, 69 about the axis A-A'.
  • the connecting wall 46 tightly closes off an annular space 72 which is delimited between the respective sleeves 54, 69 of the skirts 42, 44. Externally, the annular space 72 opens upwards.
  • the second receptacle 14 is advantageously produced from a metal tube which is harder than the plastics material forming the neck 22.
  • the second receptacle 14 comprises a hollow deformable body 80 delimiting an internal volume 82 for receiving the second cosmetic product.
  • the second receptacle further comprises an end fitting 84 for coupling to the first receptacle 12 and a plug 86 for sealing the internal volume 82.
  • the body 80 is a tube closed along the lower edge thereof and opening only via the end fitting 84.
  • the end fitting 84 is of a shape substantially conjugate to that of the introduction passage 56. It comprises an external screw thread of a shape complementary to the internal screw thread 58.
  • the first receptacle 12 and the second receptacle 14 are provided, for example in the packaging 17 thereof.
  • the first receptacle 12 contains the first cosmetic product in the internal volume 30 thereof.
  • the second receptacle 14 contains, in the internal volume 82 thereof, the second cosmetic product for mixing with the first cosmetic product to form the cosmetic composition.
  • the user removes the plug 24 from the first receptacle 12 and the plug 86 from the second receptacle 14. He turns the second receptacle 14 upside-down and brings the end fitting 84 thereof into contact with the neck 22 of the first receptacle 12. For this purpose, he introduces the end fitting 84 of the second receptacle 14 into the introduction passage 56 of the coupling skirt 42 by screwing it into the screw thread 58.
  • the screw thread 58 is discontinuous to facilitate the removal from the mould of the neck 22, it is still easy to engage the end fitting 84 and screw it onto the threads 62 in a reliable manner.
  • the internal volume 82 of the second receptacle 14 is connected to the internal volume 30 of the first receptacle through the passage 56 of the neck 22.
  • the user thus squeezes the body 80 to make the second cosmetic product pass from the internal volume 82 to the internal volume 30 of the first receptacle.
  • the presence of the longitudinal channels 64 between the threads 62 of the discontinuous screw thread 58 makes it possible to evacuate the air contained in the internal volume 30 of the first receptacle 12, which is driven out when the second cosmetic product is introduced.
  • the flow of the second cosmetic product into the internal volume 30 of the first receptacle through the neck 22 is therefore regular and easy to control.
  • the presence of the notch 61 A on the upper edge 61 of the sleeve 54 further allows the air coming from the first receptacle to escape completely into the atmosphere during the transfer of the product.
  • the play, selected so as to be significant, between the neck 22 and the end fitting of the second receptacle also allows the evacuation of the air.
  • the user unscrews the second receptacle 14 and mixes the first cosmetic product with the second cosmetic product in the first receptacle 12 by shaking the first container, which was sealed beforehand. Then, when the cosmetic composition is ready, the user applies this composition using the application end fitting 16, which was screwed onto the first receptacle beforehand.
  • a first receptacle 12 provided with a neck 22 facilitates the production of the receptacle 12 and of the neck 22 thereof, while offering a user simple and reliable use.
  • the method for producing the first receptacle 12 according to the invention will now be described in connection with Fig. 7 to 10, which show the mould 100 for moulding the neck 22 and joining it to the hollow container 20.
  • the mould 100 comprises a first mould half, forming a die 102, and a second mould half, forming a punch 104 which is mounted so as to be movable relative to the die 102 between an open position of the mould, shown in Fig. 7, and a closed position of the mould, shown in Fig. 8.
  • the die 102 and the punch 104 delimit between them a mould cavity 106 of a shape complementary to that of the neck 22.
  • the die 102 comprises an external peripheral shell 108 and a central bar 110 comprising a core which can be moved in translation along a central movement axis B-B' relative to the external shell 108.
  • the shell 108 comprises an upper region 112 delimiting an internal shoulder 114, which is to form the base wall 40, and a lower region 116, which delimits a substantially cylindrical lower surface 118 having an external impression 120.
  • the cylindrical surface 118 is to delimit the outer surface of the peripheral skirt 44.
  • the external impression 120 is of a shape conjugate to the shape of the external screw thread 70 of the peripheral skirt 44.
  • the lower region 108 is made from a plurality of mould elements distributed angularly around the axis B-B'.
  • the mould elements are movable radially relative to the axis B-B' between a closed configuration, in which the region 108 delimits a continuous peripheral surface 118 in the mould cavity 106, and an open configuration shown in Fig. 9 in which the different elements are spaced radially from one another and are spaced from the axis B-B' so as to allow the external screw thread 70 to be removed from the mould.
  • the bar 110 comprises a movable central core 130 which is to form the inner surface of the coupling skirt 42 and a fixed annular casing 132 forming the annular space 72 between the skirts 42, 44.
  • the central core 130 is of a substantially cylindrical shape. It has an upper surface 134 for application against the punch 104 and a peripheral surface 136, with axis B-B', for partially delimiting the mould cavity 106 to form the inner surface of the skirt 42.
  • the peripheral surface 136 delimits an internal impression 138 for forming the screw thread 58 and an upper cavity 140 forming the stops 60 and the flats 66 thereof.
  • the internal impression 138 is of a shape conjugate to that of the screw thread 58.
  • the impression 138 thus has a plurality of disjointed hollow regions, spaced annularly, of shapes complementary to the different threads 62 of the screw thread 58.
  • the internal impression 138 is formed by a continuous helical cavity extending around the axis B-B'.
  • the annular casing 132 has an upper projection 142 of a shape conjugate to the shape of the annular space 72.
  • the central core 130 is displaceable along the axis B-B' relative to the annular casing 132 and relative to the external shell 108, between a moulding position, retracted into the external shell 108, shown in Fig. 7 and 8, for delimiting the mould cavity 106, and a position for extracting the second receptacle 14 from the mould, shown in Fig. 9, in which the core 130 projects externally out of the external shell 108.
  • the punch 104 is of a generally cylindrical shape. It has an external peripheral surface 150 supporting the hollow container 20 and a lower surface 152 for sealing the mould cavity 106 disposed opposite the die 102.
  • the sealing surface 152 extends substantially transversely to the axis B-B'. It comprises a peripheral region 154 of a shape conjugate to the inner surface of the base wall 40 and to the inner surface of the connecting wall 46.
  • the sealing surface 152 further has a central region 156 for application against the upper surface 134 of the core 130 when the punch 104 is in the position thereof for closing the mould 100.
  • the mould cavity 106 is of a shape substantially conjugate to that of the neck 22 when the punch 104 is in the closed position of the mould, when the external shell 108 is in the closed configuration thereof and when the core 130 is in the retracted position thereof.
  • the cavity 106 is then delimited respectively by the shoulder 114, the outer surface 118, the upper projection 142 of the annular casing 132, the peripheral surface 136 of the core 130, and the outer region 154 of the lower surface 152 of the punch.
  • the process for producing the first receptacle 12 comprises a phase of producing the hollow container 20, a phase of moulding the neck 22 and joining it to the hollow container 20, and a phase of forcibly removing the neck 22 from the mould.
  • the hollow container 20 is produced by extruding the lateral wall 28 in the form of a tube and by cutting the tube thus formed.
  • the container 20 is thus engaged around the punch 104 so as to be held in contact with the outer surface 150. Part of the free outer edge 160 of the lateral wall 28 projects downwards away from the punch 104.
  • the punch 104 is brought opposite the die 102 in the open position of the mould 100.
  • a dose 158 of partially melted plastics material, capable of deformation, is introduced between the punch
  • the dose 158 forms a string.
  • the core 130 is in the retracted position thereof.
  • the punch 140 is brought towards the die 102 as far as the closed position of the mould 100.
  • the mould 100 delimits, as was seen above, a mould cavity 106 having a shape complementary to that of the neck 22.
  • the upper edge 160 of the lateral wall 28 thus projects into the mould cavity
  • the dose 158 introduced into the die 106 is deformed and fills the mould cavity 106 to form the neck 22 and to join it to the outer edge 160 of the wall 28.
  • the molten plastics material contained in the cavity 106 then at least partially solidifies, for example by cooling the punch 104 and the die 102.
  • the skirts 44, 46, provided with the respective screw threads 58, 70 thereof, are then formed.
  • the core 130 is disposed in the introduction passage 56 of the coupling skirt 42 with the displacement axis B-B' thereof coincident with the axis A- A' of the passage 56.
  • the upper projection 142 occupies the annular space 72.
  • the mould elements in the lower region 116 of the outer shell 108 thus open radially into the open configuration shown in Fig. 9, to disengage the external screw thread 70 and allow the extraction thereof from the die 102.
  • the punch 104 is extracted from the container 20.
  • the core 130 then passes from the retracted position thereof to the deployed position thereof, as shown in Fig. 9. This displaces the neck 22 and the container 20 upwards away from the die 102.
  • the upper projection 142 leaves the annular space 72 between the skirts 42, 44 which is thus cleared.
  • the container 20 and the neck 22 are held so as to be unable to move along the axis B-B', by a holding means (not shown).
  • the core 130 is again displaced along the axis B-B' towards the retracted position thereof in the die 102, leading to the forcible extraction thereof out of the introduction passage 56, from the connecting wall 46 towards the outer edge 61 , to remove the internal screw thread 58 from the mould.
  • the inclined shape of the inner face of the or each thread 62, the dimensions, and where applicable the discontinuities of the screw thread 58 facilitate this forcible removal from the mould. Further, the sleeve 54 of the coupling skirt 42 deforms radially into the annular space 72 to promote the passage of the core 130 between the or each thread 62 of the screw thread 58.
  • the relative movement of the central core 130 relative to the coupling skirt 42 is a translational movement along the axis A-A', without rotation about said axis A-A', allowing rapid removal from the mould using a mould 100 which has a low complexity and is thus inexpensive to produce.
  • the first receptacle 12 is thus detached from the mould and the production of another receptacle can begin, with a very low cycle time.
  • the method disclosed above comprising a step of forcibly removing the internal screw thread 58 from the mould, is implemented identically for producing necks 22 provided with a discontinuous internal screw thread 58 as shown in Fig.
  • necks 22 provided with a continuous internal screw thread 58 comprising a single continuous thread 62.
  • the neck 22 is thus produced in one piece in a simple and inexpensive manner suitable for mass production.
  • This method also advantageously makes it possible to demould forcibly an internal screw thread disposed on an internal skirt when the neck further comprises a peripheral skirt located around the internal skirt.
  • the connecting wall 46 is solid, so as to seal internally the annular space disposed between the skirts 42 and 44.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

L’invention concerne un procédé comprenant l’introduction d’un matériau déformable dans la cavité de moulage (106) d’un moule (100). La cavité de moulage (106) a une forme sensiblement complémentaire à celle du col (22) du premier récipient dans la position fermée du moule (100). Le moule (100) comprend au moins une partie centrale mobile (130) délimitant une impression interne (138) qui doit former le filetage interne (58). Le procédé comprend la solidification au moins partielle du matériau déformable pour former le col (22), la partie centrale mobile (130) se prolongeant dans le passage d’introduction (56) défini par le manchon (54) de la jupe de couplage (42). Le procédé comprend l’étape consistant à retirer le col (22) du moule en retirant de force la partie centrale mobile (130) du passage d’introduction (56).
PCT/EP2009/059851 2008-08-01 2009-07-30 Procédé de production d’un premier récipient pour un produit cosmétique, moule, col et récipient associés Ceased WO2010012799A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR0855365 2008-08-01
FR0855365A FR2934519B1 (fr) 2008-08-01 2008-08-01 Procede de fabrication d'un premier recipient de produit cosmetique, moule, col et recipient associes
US9194208P 2008-08-26 2008-08-26
US61/091,942 2008-08-26

Publications (2)

Publication Number Publication Date
WO2010012799A2 true WO2010012799A2 (fr) 2010-02-04
WO2010012799A3 WO2010012799A3 (fr) 2010-03-25

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Country Status (2)

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FR (1) FR2934519B1 (fr)
WO (1) WO2010012799A2 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9242008B2 (en) 2014-06-18 2016-01-26 Thetis Pharmaceuticals Llc Mineral amino-acid complexes of fatty acids
US9505709B2 (en) 2014-05-05 2016-11-29 Thetis Pharmaceuticals Llc Compositions and methods relating to ionic salts of peptides
US9999626B2 (en) 2014-06-18 2018-06-19 Thetis Pharmaceuticals Llc Mineral amino-acid complexes of active agents
US10130719B2 (en) 2016-06-03 2018-11-20 Thetis Pharmaceuticals Llc Compositions and methods relating to salts of specialized pro-resolving mediators
CH720861A1 (de) * 2023-06-15 2024-12-30 Hoffmann Neopac Ag Vorrichtung und Verfahren zum Anformen eines Tubenkopfrohlings eines Tubenrohlings
EP4620648A1 (fr) * 2024-03-19 2025-09-24 PackSys Global AG Fermeture de tube d'emballage
WO2025195901A1 (fr) 2024-03-19 2025-09-25 Packsys Global Ag Fermeture de tube d'emballage

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE616659A (fr) * 1961-04-19 1900-01-01
FR2342914A1 (fr) * 1976-03-02 1977-09-30 Oreal Dispositif de conditionnement de deux produits isoles l'un de l'autre avant la distribution
FR2476607A1 (fr) * 1980-02-22 1981-08-28 Oreal Dispositif permettant de conditionner une dose de produit additionnel et de la melanger, au moment de l'emploi, a un produit de base
US6123231A (en) * 1998-07-13 2000-09-26 Owens-Brockway Plastic Products Inc. Plastic container with drain back spout and method and apparatus for making same
FR2841222B1 (fr) * 2002-06-20 2005-02-04 Oreal Embout applicateur
FR2842504B1 (fr) * 2002-07-17 2005-01-21 Oreal Recipient comportant un col pourvu de deux parties ayant des diametres differents

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9505709B2 (en) 2014-05-05 2016-11-29 Thetis Pharmaceuticals Llc Compositions and methods relating to ionic salts of peptides
US9242008B2 (en) 2014-06-18 2016-01-26 Thetis Pharmaceuticals Llc Mineral amino-acid complexes of fatty acids
US9999626B2 (en) 2014-06-18 2018-06-19 Thetis Pharmaceuticals Llc Mineral amino-acid complexes of active agents
US10130719B2 (en) 2016-06-03 2018-11-20 Thetis Pharmaceuticals Llc Compositions and methods relating to salts of specialized pro-resolving mediators
US11135298B2 (en) 2016-06-03 2021-10-05 Thetis Pharmaceuticals Llc Compositions and methods relating to salts of specialized pro-resolving mediators
US11191840B2 (en) 2016-06-03 2021-12-07 Thetis Pharmaceuticals Llc Compositions and methods relating to salts of specialized pro-resolving mediators
US11925688B2 (en) 2016-06-03 2024-03-12 Thetis Pharmaceuticals Llc Compositions and methods relating to salts of specialized pro-resolving mediators
CH720861A1 (de) * 2023-06-15 2024-12-30 Hoffmann Neopac Ag Vorrichtung und Verfahren zum Anformen eines Tubenkopfrohlings eines Tubenrohlings
EP4620648A1 (fr) * 2024-03-19 2025-09-24 PackSys Global AG Fermeture de tube d'emballage
WO2025195901A1 (fr) 2024-03-19 2025-09-25 Packsys Global Ag Fermeture de tube d'emballage

Also Published As

Publication number Publication date
FR2934519A1 (fr) 2010-02-05
FR2934519B1 (fr) 2013-06-28
WO2010012799A3 (fr) 2010-03-25

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