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WO2009049853A2 - Applicateurs moulés par injection - Google Patents

Applicateurs moulés par injection Download PDF

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Publication number
WO2009049853A2
WO2009049853A2 PCT/EP2008/008661 EP2008008661W WO2009049853A2 WO 2009049853 A2 WO2009049853 A2 WO 2009049853A2 EP 2008008661 W EP2008008661 W EP 2008008661W WO 2009049853 A2 WO2009049853 A2 WO 2009049853A2
Authority
WO
WIPO (PCT)
Prior art keywords
component
applicator
soft component
hard
soft
Prior art date
Application number
PCT/EP2008/008661
Other languages
German (de)
English (en)
Other versions
WO2009049853A3 (fr
Inventor
Norbert PÖTSCHL
Andreas Weber
Georg Röder
Original Assignee
Schwan-Stabilo Cosmetics Gmbh & Co. Kg
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 Schwan-Stabilo Cosmetics Gmbh & Co. Kg filed Critical Schwan-Stabilo Cosmetics Gmbh & Co. Kg
Publication of WO2009049853A2 publication Critical patent/WO2009049853A2/fr
Publication of WO2009049853A3 publication Critical patent/WO2009049853A3/fr

Links

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
    • 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
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14311—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles using means for bonding the coating to the articles
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14336—Coating a portion of the article, e.g. the edge of the article
    • B29C45/14344—Moulding in or through a hole in the article, e.g. outsert moulding
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/10—For human or animal care
    • A46B2200/1046—Brush used for applying cosmetics
    • A46B2200/1053—Cosmetics applicator specifically for mascara
    • A46B2200/106—Cosmetics applicator specifically for mascara including comb like element
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14311—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles using means for bonding the coating to the articles
    • B29C2045/14327—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles using means for bonding the coating to the articles anchoring by forcing the material to pass through a hole in the article
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C2045/1486—Details, accessories and auxiliary operations
    • B29C2045/14967—Injecting through an opening of the insert
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1657—Making multilayered or multicoloured articles using means for adhering or bonding the layers or parts to each other
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1676—Making multilayered or multicoloured articles using a soft material and a rigid material, e.g. making articles with a sealing part
    • 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
    • B29L2031/718—Cosmetic equipment, e.g. hair dressing, shaving equipment

Definitions

  • the present invention relates to an applicator consisting of at least two components with an improved connection between the components.
  • a preferred application of the applicator is in the field of cosmetic application systems, wherein the applicator is loaded by immersion in a cosmetic substance in order subsequently to apply and distribute it to the skin, semi-mucous membrane, mucous membrane, hair or hair.
  • Applicators are in the cosmetics industry, for example in the form of mascara brushes, brushes, brushes, foam sponges or foam rubber applicators, for example, for applying eyelash or Haarmascara, liquid lipstick of high viscosity or the like.
  • a suitably adapted applicator should be capable of achieving a uniform and targeted application as well as a distribution possibly as simultaneously as possible over a larger area of the skin or several hairs of the eyelashes.
  • an applicator brush for applying mascara is known.
  • the applicator brush is produced by means of a two-component injection molding process (so-called 2K process).
  • 2K process a two-component injection molding process
  • a rigid plastic core as a hard component
  • bristles molded from a softer plastic as a soft component.
  • the part of the soft component serving as the application surface or element is connected by means of conventional bonding techniques with a handle or handle of the hard component of the applicator.
  • Conventional bonding techniques include gluing, clamping, for example, in a ferrule, snap-on snapping, and the like.
  • connection is made between the hard component and the soft component by simply molding the hard component with the soft component.
  • connecting or holding structures are provided in the interface between the two components. These are usually simple ring grooves or annular beads. Nevertheless, the connection of the two components (hard component and soft component) does not appear to be optimal, since, for example, at one of the Opening a cosmetic container provided scraper has been reported by a detachment of the soft component of the hard component.
  • Known 2K applicators in particular known compounds between soft and hard components, can be found, for example, in EP 0 038 524, EP 1 384 417 A2 and US 2004/0047676 A1.
  • the applicator according to the invention has at least one new form-fitting connection region, which enables an effective anchoring of the hard component with the soft component.
  • the applicator according to the invention consists at least of a hard component and at least one at one end of the applicator, d. H. in the longitudinal direction of the applicator, to the hard component molded soft component to form an application surface, wherein both the hard component and the soft component at least partially made of plastic and the plastic of the hard component is harder than the plastic of the soft component.
  • a connecting region arranged substantially in the interior of the hard component is formed between the hard component and the soft component, wherein at least one part of the soft component arranged in the interior of the hard component is provided there as at least one connecting element.
  • At least one part of the hard component disposed inside the soft component may be used as a stabilizer for the soft component as well as for - A -
  • connection between soft and hard component can be provided.
  • the flexibility of longer soft component embodiments can be set particularly advantageously. Therefore, the novel connection has proven particularly useful in applicators in which the soft component protrudes significantly beyond the hard component.
  • the applicator of the invention may be used in conjunction with a container, for example a vial, in which a cosmetic substance is stored.
  • a container for example a vial
  • the applicator may be dipped in the vial and the substance contained therein.
  • the surface of the applicator is loaded with the substance.
  • Such systems are commonly known as dip systems.
  • the applicator can be coupled to a handle, which also forms the closure of the container.
  • the applicators according to the invention can also be stored in a case or other container and / or with a cap or a schooner and / or another functional element, such as a sharpener for example, a kohl pen or lip liner, be attached and a cosmetic product, such as an eye shadow or powder, attached.
  • An applicator according to the invention is produced by means of at least one injection molding machine for injecting a soft component of the applicator onto a hard component, the following steps being possible: injection molding of the soft component at at least one injection point by at least one lateral opening, for example in the region of the circumference, in the hard component, wherein the soft component is molded over at least one channel extending inside the hard component from the at least one lateral opening to one end of the hard component such that at least one connecting element between the hard component and the soft component for connection of the two components substantially through the interior of the at least a channel lying part of the soft component is designed as a positive anchoring.
  • At least one connecting element between the hard component and the soft component for connecting the two components is produced essentially by the part of the soft component which is located in the interior of the at least one channel for a positive anchoring.
  • the injection point can thus be particularly advantageous in an area outside the effective area of the applicator, d. H. Application surface, are arranged, in particular with respect to the application end of the applicator in the rear region, d. H. a non-visible area of the applicator.
  • the aforementioned task with respect to the manufacturing process by the inventive design of the connection region, d. H. the anchoring or connection, between the hard and the soft component dissolved.
  • connection region in particular the at least one connecting element formed in the interior of the hard component
  • manufacturing method according to the invention achieved in addition to the usual fusion of the two components in a peripheral zone of their mutual interfaces, a particularly effective form-fitting anchoring.
  • this design allows a very large degree of freedom in the design of the applicators, since a variety - in terms of shape and surface structure - different applicators can be molded onto the same hard component part by simply changing the mold for the soft component.
  • At least one opening for injecting the soft component and / or venting during injection molding is located in the vicinity of the end of the anchoring element located inside the hard component in the hard component. After the soft component has been sprayed on, the at least one opening is also filled with the soft component, so that the soft component forms a rod-shaped additional anchorage, also referred to as a connecting rod in this description.
  • At least one opening is provided in the hard component for at least one web-shaped anchorage formed by the soft component, also referred to as anchoring web in this description.
  • the at least one anchoring web establishes a connection between the part of the soft component lying inside the hard component and a part of the soft component arranged on the outer surface of the hard component.
  • An advantageous development of the invention provides to further improve the anchoring of the soft component in the hard component in that a part of the hard component protrudes into the soft component, d. H. extends into the soft component.
  • additional functional elements for the end user such as the already mentioned sharpener for a kohl pen or lip liner, in the rear region of the applicator, d. H. the side facing away from the application area provided.
  • the applicator according to the invention can form part of a closure for liquid and / or gastight completion of the system. So that no volatile components can escape from the reservoir of the cosmetic substance, the required sealing function can be achieved by selecting a suitable material for the hard component.
  • the soft component is not used in the sealing function.
  • the material of the soft component can be selected solely from the point of application, such as with regard to hardness, elasticity, certain surface properties with respect to the substance to be applied or the type of skin or hair to be applied to the etc.
  • the material of the hard component can turn so be selected that the required sealing function can be achieved by the contact surface between the container and the hard component with a closed container makes a sufficient seal of the gas space.
  • the surface structure of the soft component may be different geometrical arrangements and dimensions of dimples.
  • These structures can be regular or irregular. It can be so from those with a closed surface to those with an open-pore
  • the geometric design of the soft component itself can in many ways, for example, wedge-shaped, convex, cylindrical, with or without (flat) application surfaces (flattening), tapered, in projectile form or as a cone towards the tip, or in other design forms depending on Ergonomic and design aspects are designed.
  • the soft component to the hard component by means of at least one Injected injection molding machine, or this is wholly or partially overmolded.
  • the plastic of the soft component By choosing the plastic of the soft component, the degree of flexibility of the soft component can be adjusted freely, without generally complicating the manufacturing process. Furthermore, the disadvantages of the complex production and a microbiological burden do not occur because the injection molding of the plastic of the soft component takes place at temperatures or conditions hostile to microorganisms.
  • the hard component is completely produced exclusively in the previous injection molding process of plastic.
  • at least one insert for example made of metal, wood or thermoset or a prefabricated locking or coupling element for later coupling with a pin, handle or serving as a handle closure part of a container or the like.
  • a composite molded part is formed.
  • a sterility of the applicator can be ensured, as u. U. microorganisms introduced with the insert into the injection machine during encapsulation with the plastic of the hard component are killed. The same applies to the molding of the soft component.
  • Another advantage of the embodiment according to the invention of the connection between hard and soft component is that the contact surface between the two components is additionally increased in comparison to the known embodiments by the positive anchoring of the soft component in the interior of the hard component.
  • a bonding layer in the form of a mixing layer consisting of the two materials can form between the soft component and the hard component during injection molding. Then, in addition to the positive anchoring in addition a material connection between the hard component and the Soft component generated.
  • This mixing layer also has the effect that the soft component can no longer be detached from the hard component in a non-destructive or extremely difficult manner.
  • the said mixing effect can be enhanced by injecting after the injection molding process to produce the hard component by completely cooling it to ambient or room temperature.
  • a favorable processing temperature of the material of the hard component is between 30 ° C and 80 0 C and preferably between 60 0 C and 80 0 C. This corresponds to a preferred cooling time after spraying the hard component depending on the material thickness of the hard component and the ambient temperature of about 10 s to about 25 s.
  • the injection molding can also take place at a lower processing temperature (5 ° C. or less).
  • the processing temperature which is suitable for the material the hard component can be melted more or less strongly during the injection molding of the soft component, and thus the thickness of the mixing layer can be adjusted.
  • the hard component may also be preheated prior to injection of the soft component.
  • the formation of the mixing layer can thus be controlled independently of the production of the hard component and, in principle, can also be transferred to inserts made of thermoplastic material or the like.
  • the material for the soft component is a plastic from the group consisting of a thermoplastic elastomer (TPE). This may be z. For example, one off
  • Blocks of different monomers existing block copolymer act.
  • Polyolefin elastomers (PTE-V), polyolefin elastomers (PTE-O),
  • Polyamide elastomers PTE-A
  • polyurethane elastomers PTE-U
  • polyester elastomers PTE-E
  • plastics from the group of real elastomers such as nitrile rubber, silicone rubber and styrene-butadiene rubber.
  • a TPE blend consisting of a thermoplastic matrix and elastic particles can be used.
  • the material can be processed like a thermoplastic, the elastic particles give the plastic its elastic usability. It is important to have good mixing and adhesion of the matrix to the particles.
  • This type of material includes PP-EPDM, PP-NR, PP-IIR blends or polyolefin thermoplastics as PP-EPM blend.
  • TPE material By using a suitable TPE material, a wide range of mechanical, haptic, optical, dynamic or wetting properties can be achieved, such. B. a wide range of hardness, temperature resistance, deformation resistance, oil resistance,
  • the materials for the hard component should be noted, which is basically any material that provides sufficient hardness, ie mechanical stability, for the function as a carrier of the soft component, is suitable.
  • a material for the hard component especially plastics from the group of thermoplastics.
  • This category includes, for example, polypropylene (PP), polyamide (PA), polystyrene (PS), acrylonitrile-butadiene-styrene copolymers (ABS), polyoxymethylene copolymers (POM-C), polycarbonate (PC), polybutylene terephthalate (PBT), Polyphenylene ether (PPE), or Polyphenylene sulfide (PPS).
  • PP polypropylene
  • PA polyamide
  • PS polystyrene
  • ABS acrylonitrile-butadiene-styrene copolymers
  • POM-C polyoxymethylene copolymers
  • PC polycarbonate
  • PBT polybutylene terephthalate
  • the hard component can in principle also consist of any other "hard” material to which molded in the production of the applicator described here, the soft component as an application element according to the inventive method and a connection between soft component and hard component according to the basic idea the invention is produced.
  • Fig. 1 a-1d a first embodiment of an applicator according to the invention
  • 3a, 3b a third embodiment of an applicator according to the invention with a hard component in the shape of a stem and a shortened stabilizer.
  • FIGS. 1 a and 1 b show an inventive applicator 100 in a scale of 5: 1 according to a first exemplary embodiment.
  • FIG. 1b is an illustration of the section plane A-A of the applicator 100 of FIG. 1a.
  • the injection point of the soft component 102 is in a region outside the effective area of the applicator 100, i. H. the application area W, relocated.
  • this region may be the rear region, preferably a region of the applicator 100 which is not visible on the end product.
  • the displacement of the injection point to at least one lateral opening 108 away from the surface of the soft component is achieved by the special embodiment of the injection of the soft component 102, as shown in FIGS. 1 a, 1 b.
  • the injection point with respect to the application surface W to the rear, d. H. to the soft component opposite end of the hard component 101 may be provided.
  • the coupling region of the applicator with, for example, a handle or closure for a container.
  • the injection molding was performed by the at least one lateral opening 108 in the region of the circumference of the hard component 101.
  • the outer shape of the periphery of the hard component 101 in the figures is circular.
  • the peripheral shape does not necessarily have to be circular, in principle, the scope can be configured arbitrarily, for example, oval, but also as a polygon.
  • connection region 104 between the hard component 101 and the soft component 102 there is at least one channel 105 which, as can be clearly seen from the soft component alone in FIG. 1d, is tubular.
  • the channel 105 is thus located in the hard component 101 as a tubular first connection element 101 * in the form of a tubular recess.
  • the channel 105 is filled after the injection of the soft component with a corresponding second connecting element 102 * from the material of the soft component 102, which then necessarily has a tubular shape.
  • the connection thus consists of a telescopic, positive connection of the two components 101, 102.
  • the quasi-nested fasteners 101 * , 102 * result in a highly resilient connection.
  • connection according to the invention allows an application-related adjustment of the length of a stabilizer 109.
  • the anchoring of the soft component in the interior of the hard component is further secured against detachment by the material in the at least one lateral opening 108 ,
  • the transition region between hard component and soft component 101, 102 which is necessarily carried out over a particularly large area in the case of the known 2K applicators for a secure connection, can be made almost arbitrarily small in the applicator of the invention. This minimal annular transition region is marked 103 in FIG. 1 b.
  • openings 108 for injection molding instead of one, two or more openings 108 for injection molding, ie injection points, can be provided.
  • further openings are provided as a connection from the channel 105 to the outside to allow venting of the channel 105 during injection. The vents make sure that in the Hard component air can be completely displaced during injection molding of the soft component and so the lying inside the applicator 100 channel 105 is completely filled with the soft component 102. This also avoids that the air in the channel 105 as a result of compaction does not lead to a deformation of the surrounding material.
  • Fig. 1 b shows a cross section of the embodiment of the applicator 100 of FIG. 1 a.
  • Clearly two diametrically opposite openings 108 of the hard component 101 can be seen. These openings 108 serve as injection points for the soft component 102 in the manufacture of the applicator 100.
  • the openings 108 for molding the soft component 102 serve in addition to their primary function also a simultaneous improvement of the anchoring of the soft component 102 in the hard component 101, since after solidification or Solidification of the soft component 102 in the openings form rods 107, which have an additional positive anchoring effect.
  • other structural elements formed by the soft component 102 such as, for example, claws or claws, can also be produced for such additional anchors.
  • the basic idea of these anchor elements consists in the radial engagement of the hard component 101 by the solidified soft component 102 with respect to the longitudinal axis of the applicator.
  • the anchoring of the soft component 102 in the hard component 101 can be further improved if, in addition to the rods 107 shown in FIGS. 1a to 1d, parts of the hard component 101 in the form of, for example, claws or the stabilizer 109 in FIG the soft component 102 protrude.
  • the arrangement of the stabilizer 109 may be centric or eccentric to the longitudinal axis of the applicator 100. It is also conceivable here to provide a plurality of claws, rods or other structural elements on the hard component 101, which support a permanent connection of the hard component 101 with the soft component 102. In addition, it is also conceivable that the parts of the hard component extending into the soft component 102, such as the Stabilizer 109, in turn, additional additional structural elements, such as claws, rods 107, nipple-shaped extensions or a combination thereof, to further support the anchoring of the two components or the interface and thus the adhesion between the hard component 101 and the soft component 102nd to enlarge.
  • Fig. 1c and Fig. 1d show the solidified soft component 102 in isolation.
  • Fig. 1c very clearly serve as the anchor serving as rods 107 and in Fig. 1 c and 1 d of the very small running on the applicator outer transition region in the form of an annular circumferential lip 112.
  • Fig. 1d an eruption is still shown on the soft component 102 (dotted tear-out marked 111). Attention should be drawn here to the second connecting element 102 * which is clearly visible in FIGS. 1c and 1d.
  • the invention compared to known embodiments, essentially displaced into the interior of the hard component 101 in the connection region 104
  • the outer surface of the soft component 102 may be partially or completely provided with a surface structure having a plurality of structural elements.
  • Such structural elements may for example comprise nubs 420 (FIG. 4b), but also bristles, lamellae or other known structural elements as well as any combination thereof are possible.
  • additional functional elements for the user as in the case of the second embodiment of the present invention shown in Figs. 2a-2d, may be provided in the rear area, ie, the side away from the application area.
  • the applicator 200 illustrated in FIG. 2a and in the sectional plane AA in FIG. 2b has, as an additional functional element, a sharpener 240 for, for example, a kohl pen or a lip liner.
  • the channel 105 is thus located in the hard component 201 as a tubular first connection element 201 * in the form of a tubular recess, which is filled with a corresponding second connection element 202 * made of the material of the soft component 202 after the soft component has been injection-molded.
  • a protective cap or a schooner 245 for the applicator 200 as shown in Fig. 2c and also in the sectional plane C-C in Fig. 2d, particularly easy to implement.
  • the schooner 245 serves primarily
  • Applicators are usually residues of the cosmetic mass or substance on the application surface W of the applicator 200.
  • the schooner 245 protects the applicator but also from contamination and mechanical
  • the cap or the schooner 245 in the same or a second close to the first injection molding machine for the applicator 200 arranged spraying machine, preferably at the same time, be prepared with the injection molding of the soft component 101.
  • the cap or the protector 245 is particularly preferably applied in a further process step in the same spraying machine after the injection of the soft component 102 on the soft component 102, so as to minimize the time in which contamination with germs would be possible.
  • the cap or the schooner 245 is placed on the soft component 102 on a mounting device between the spraying machine for the applicator 200 and the second spraying machine for the cap 245.
  • FIGS. 3a, 3b and 4a, 4b A third and a fourth exemplary embodiment of an applicator 300, 400 is shown in the FIGS. 3a, 3b and 4a, 4b.
  • the figure 3b and 4b each show a cross-sectional view of the sectional planes AA of Figure 3a and 4a.
  • the respective parts consisting of the hard component 301 or 401 are designed in the form of a handle 325 or 425 in both exemplary embodiments.
  • the at least one channel 105 as the tubular first connecting element 301 * or 401 * in the form of a tubular recess which after injection of the soft component with the corresponding second connecting element 302 * or 402 * is filled from the material of the soft component 302 or 402.
  • additional teat structures 333 and 433 are indicated for a positive engagement with the handle or closure, not shown.
  • the stabilizer 309 embodied as part of the hard component 301 lies shortened in the interior of the hard component 301.
  • the application surface W of the soft component 302 already has a high degree of flexibility shortly after the hard component 301.
  • FIG. 4a, 4b show an embodiment of the applicator, in which serving as the application surface W outer surface of the soft component 402 studs 420 are formed.
  • any other structures already mentioned and variations in the surface density of these elements are possible.
  • the stabilizer 409 realized as a part of the hard component 401 projects far into the soft component 402 in the embodiment of FIGS. 4a, 4b, in particular in comparison with the previous exemplary embodiments. This serves to stabilize the soft component and is particularly advantageous for very long soft tissues.
  • 5a, 5b show an advantageous development as a fifth embodiment of an applicator 500 according to the invention, wherein in comparison to the embodiments of Figs. 1a to 4b another or an alternative embodiment of the anchorage in the form of one or more anchoring webs directly in the transition region 103 between soft component 502 and hard component 501 is provided.
  • the at least one channel 105 is again in the form of the tubular recess as the tubular first connecting element 501 * , the channel 105 after the soft component 502 having been injected with the corresponding second connecting element 502 * from the material of the soft component 502 is filled.
  • the further anchoring is formed in the applicator 500 of two oval or in the form of a long hole perforations or openings 108 * in the hard component 501 in the transition region 103, which are filled in the final state of the molded soft component 502.
  • the soft component forms anchoring webs 107 * , wherein the term anchoring web is based on the connecting function of a web, since material of the soft component is located on both sides of the opening 108 * , such that an anchoring web 107 * forms a closed connection between the outside of the hard component Soft component and arranged in the connection region soft component produces.
  • outside and inside are used with reference to the shape of the hard component, ie, "the soft component disposed outside the hard component” means approximately “visible from outside”, whereas “the soft component disposed within the hard component” is substantially “from” FIG Outside not visible “means.
  • anchoring rods 107 ie anchoring rods
  • the anchoring ribs 107 * formed by the soft component in the embodiment of FIGS. 5a and 5b are similar to the members of a chain Openings 108 * in the hard component 501 pass through or embrace.
  • the anchoring formed in the transition region 103 between the soft component 502 and the hard component 501 as a connecting web produces a form-locking connection that can only be released by means of destruction.
  • a particular advantage of such anchoring webs directly in the transition region 103 between the soft component 502 and the hard component 501 is that in addition a partial detachment or a protrusion of the soft component from the hard component can be prevented, for. B. so that the circumferential lip 112 additionally fixed or stabilized.
  • anchoring webs 107 * can be made in any desired geometric shape, in particular cross-sectional configuration. That is, in addition to the oval version shown, round, rectangular, polygonal cross sections are possible. Also, multiple rows of anchoring bars may be provided at different distances from the applicator tip.
  • the stabilizer 109 can terminate in its length with the edge of the hard component 101 (FIGS. 1a to 2d).
  • the stabilizer is set shorter (FIG. 3b, 309, FIG. 5b, 509) or longer (FIG. 4b, 409) than the edge of the hard component 301 or 401.
  • the ability to entrain the application surface with respect to the substance or mass to be applied, ie the holding power or the holding force, can be adjusted very selectively by the choice of suitable structural elements, and thus on the particular application, ie on the intended area for application of the skin and the properties the cosmetic substance, such as viscosity, surface adhesion, coverage, etc., vote individually. This is facilitated by the injection molding process.
  • the driving ability can also be adjusted to the particular application by suitable choice of the frictional resistance, for example by a suitable choice of the plastic of the soft component and its hardness is taken.
  • any type of surface structure may have one or more preferred directions, which need not necessarily be perpendicular to the surface of the soft component.
  • the preferred direction of the structural elements can be adjusted depending on the ergonomic handling of the applicator depending on the intended application.
  • the exemplified structures and materials can also be used in combination on the same soft component. For example, different structures may be provided on opposite faces of the same soft component for different applications, such as blending, spreading, and so on. It is also possible to mix the structural elements on an application surface or over the entire soft component.
  • the invention proposes an improved anchoring of the soft component to the hard component by essentially forming a connection region arranged in the hard component between the hard component and the soft component, which has a part of the soft component arranged as a connecting element inside the hard component.
  • the soft component is injected onto the hard component at at least one injection point through at least one opening in the region of the circumference of the hard component such that the soft component extends over at least one inside the hard component from the at least one lateral opening to one end of the hard component Channel can be injection molded and a lying inside the hard component part of the soft component produced a positive anchoring, so that the applicator must have no visible injection point in the region formed by the soft component application surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Coating Apparatus (AREA)
  • Surgical Instruments (AREA)
  • Brushes (AREA)
  • Cosmetics (AREA)

Abstract

L'invention concerne un procédé de production d'un applicateur (100) par une technique à deux composants, ainsi qu'un applicateur (100) correspondant qui peut être utilisé par exemple pour appliquer une substance cosmétique sur la peau, une semi-muqueuse, une muqueuse, des poils ou des cheveux. L'objectif de l'invention est d'améliorer l'ancrage du composant souple (102) sur le composant rigide (101). À cet effet, une zone de jonction (104) disposée sensiblement dans le composant rigide (101) est formée entre le composant rigide (101) et le composant souple (102), cette zone de jonction présentant un élément de jonction constitué par une partie du composant souple (102) qui est disposée à l'intérieur du composant rigide (101). D'après le procédé selon l'invention, l'injection du composant souple (102) sur le composant rigide (101) se fait au niveau d'au moins un point d'injection par au moins une ouverture (108) dans la région de la périphérie du composant rigide (101) de sorte que le composant souple (102) puisse être injecté par au moins un canal (105) s'étendant à l'intérieur du composant rigide (101), de l'ouverture (108) latérale à une extrémité du composant rigide (101), et qu'une partie du composant souple (102) située à l'intérieur du composant rigide (101) crée un ancrage par complémentarité de forme.
PCT/EP2008/008661 2007-10-16 2008-10-13 Applicateurs moulés par injection WO2009049853A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202007014474.1 2007-10-16
DE202007014474U DE202007014474U1 (de) 2007-10-16 2007-10-16 Aufgespritzte Applikatoren

Publications (2)

Publication Number Publication Date
WO2009049853A2 true WO2009049853A2 (fr) 2009-04-23
WO2009049853A3 WO2009049853A3 (fr) 2009-11-26

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PCT/EP2008/008661 WO2009049853A2 (fr) 2007-10-16 2008-10-13 Applicateurs moulés par injection

Country Status (3)

Country Link
US (1) US20090095317A1 (fr)
DE (1) DE202007014474U1 (fr)
WO (1) WO2009049853A2 (fr)

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Publication number Priority date Publication date Assignee Title
EP3685982A1 (fr) 2019-01-28 2020-07-29 Texen Services Application d'un produit sur une partie superficielle du corps humain
FR3091983A1 (fr) 2019-01-28 2020-07-31 Texen Services Application d’un produit sur une partie superficielle du corps humain

Also Published As

Publication number Publication date
DE202007014474U1 (de) 2009-03-05
US20090095317A1 (en) 2009-04-16
WO2009049853A3 (fr) 2009-11-26

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