EP1940260A1

EP1940260A1 - Dip applicator

Info

Publication number: EP1940260A1
Application number: EP05802279A
Authority: EP
Inventors: Georg Röder
Original assignee: Schwan Stabilo Cosmetics GmbH and Co KG
Current assignee: Schwan Stabilo Cosmetics GmbH and Co KG
Priority date: 2005-10-12
Filing date: 2005-10-12
Publication date: 2008-07-09
Anticipated expiration: 2025-10-12
Also published as: US20080286030A1; EP1940260B1; WO2007042061A8; WO2007042061A1

Abstract

The invention relates to an applicator (100) for dipping in a cosmetic preparation and for application thereof to the skin, semi-mucous membrane, mucous membrane or short hairs, comprising a holder piece (116) and an applicator piece (120, 200), moulded to the holder piece (116), wherein both the holder piece (116) and the applicator piece (120, 200) are at least partly made from plastic and the plastic of the holder piece (116) is harder than the plastic of the applicator piece (120, 200) and the applicator piece (120, 200) comprises at least one channel (220) running over the total length of the applicator piece (120, 200), which is designed to distribute the cosmetic substance along the longitudinal extent of the applicator piece (120, 200).

Description

Dip applicator

The invention relates to an applicator for immersion in a cosmetic preparation and for applying the same to the skin, semi-mucous membrane, mucous membrane, hair or hair; hereinafter also referred to as a dip or stick applicator.

Basically, all types of liquid, pasty, gelatinous or powdered substances are suitable as cosmetic preparation. The matched applicator should be able to achieve a uniform application and distribution of the preparation as simultaneously as possible over a larger area and to different parts of the skin or hair.

Dip or stick applicators are known in the cosmetics industry, for example in the form of mascara brushes, brushes, brushes, foam sponges or sponge rubber applicators, for example for applying eyelash or hair maskara, liquid lipstick of high viscosity or the like.

The brush or brush-shaped applicators are usually formed by sticking or mechanically fixing the bristles or hair on a stick-shaped holding part. There are also flocked dip or stalks Applicators for example for applying powdered eye shadow or the like. Known. Flocking is achieved by adhering electrostatically deposited flakes to the surface of the applicator.

In this manufacturing process, however, microbial loads and a relatively long depending on the drying time of the adhesive manufacturing time proved to be problematic. Furthermore, it has been found that due to the statistical distribution of the flakes on the surface of the order or the distribution of the cosmetic preparation is not always uniform. This problem worsens with increasing service life even more, because the flakes depending on the type of cosmetic

Preparation have the tendency to stick. The same applies to brush-like

Applicators.

From US 6,616,366 another applicator brush for applying mascara is known, which can be prepared by means of a two-component injection molding process (2K process). In this case, radially protruding bristles made of a softer plastic (applicator) are molded onto a holding part formed as a rigid plastic core. The processing of the injection molding takes place at elevated temperatures, usually in the range of 200 ⁰ C or above. Such a temperature is hostile to life for microorganisms and the applicator thus produced leaves the spraying machine germ-free. If the applicator in this way in several successive spraying completely made in a machine, the problem of microbial loads are overcome. Also, the stiffness of the bristles is adjustable by a suitable choice of the plastic, so that sticking can be avoided.

In some of the embodiments of the mascara brushes of US 6,616,366, the holding part has over its entire length an axial channel in which cosmetic preparation is deposited and passed. In turn, the bristles have internal capillaries connected to this channel, through which the cosmetic preparation can emerge on the surface of the bristles. On In this way, the brush is supplied with cosmetic preparation during application. This allows for a longer period a more uniform delivery until the deposited in the cavity preparation is used up. However, it could turn out to be disadvantageous that the capillaries easily clog within the bristles, so that the feed line is not equally suitable for every type of preparation. Furthermore, the production of such brushes, in particular due to the formation of capillaries in each of the bristles, is expensive and correspondingly expensive.

The object of the present invention is to provide an applicator which is suitable for the application of a large number of different cosmetic substances on the skin, semi-mucous membrane, mucous membrane or on hairs and is inexpensive to produce.

The object is formed by an applicator of the type mentioned above with a holding part and a sprayed on the holding part applicator in which both the holding part and the applicator at least partially made of plastic and the plastic of the holding part is harder than the plastic of the Applikatorteils and the applicator part has on its outer surface at least one channel which extends substantially over the entire length of the applicator part and which is designed to distribute the cosmetic substance in the longitudinal direction of extension of the applicator part.

As a product, the dip or stick applicators according to the invention can be offered together with a bottle in which the cosmetic preparation is stored and in which the applicator is immersed, wherein the applicator can have a feel, which at the same time the (screw) closure of the Bottle forms. In a slightly different embodiment, the applicators according to the invention can also be stored in a case or other container and / or provided with a saver or added to the cosmetic product. - A -

The formation of the channel on the outer surface of the applicator part is simple in terms of production technology by using a corresponding injection mold for the applicator part. The dimensioning of the channel is advantageously carried out taking into account the physical properties of the cosmetic preparation and its interaction with the Applikatorteilkunststoff, in particular the surface tension and wetting. In this case, the applicator and preparation form a system in which it is possible to effectively distribute the cosmetic preparation through the capillarity of the channel in the longitudinal extension direction of the applicator part in a structurally simple manner.

Furthermore, the holding part of the applicator according to the invention provides an adjustment for the inherent stability by extending at least partially in the longitudinal direction of the applicator in the applicator into it. Finally, by choosing a suitable softer Applikatorteilkunststoffes the desired haptic, entrainment and distribution properties, taking into account the further dependent on the preparation wetting for each application can be adjusted.

In an advantageous development, the channel has a varying width over its length. This can be changed capillarity in certain zones. Zones with increased capillarity then serve primarily for transport while those with less capillarity serve simultaneously as a depot for the cosmetic preparation to be applied.

Good promotion of the preparation is preferably achieved in that the width of the channel is approximately equal to its depth relative to the outer surface of the applicator. Furthermore, the channel is preferably tapered with increasing depth.

In terms of a short transport path of the cosmetic preparation is advantageous if the channel extends substantially in the longitudinal direction of the applicator. In a further preferred embodiment, the channel describes at least one spiral turn around the applicator part. As a result, the preparation is conveyed not only axially with respect to the longitudinal extension direction of the applicator part but also angularly, ie distributed radially over its circumference.

It is advantageous if the cross section of the channel to the holding part facing away from the end of the Applikatorteils tapers, in particular by the depth and the width of the channel to the holding part remote from the end of the Applikatorteils decrease approximately equally. As a result, the capillarity in this area is enhanced and the tip of the applicator part, which is preferably used for application, supplied with sufficient cosmetic substance.

Instead of or in addition to a varying width of the channel this is advantageously interrupted by at least one depot. The depot is preferably formed by a groove or groove running around the applicator part essentially transversely to its longitudinal extension direction. In this case, the depot and the channel preferably have the same depth relative to the outer surface of the applicator part. Such a depot, with sufficient dimension (width), can receive more cosmetic preparation than the canal to supply, the uniform depth ensuring that no sink is formed in which the preparation remains.

According to a further preferred embodiment, the haptic properties and the distribution properties can be improved in that the applicator part has a surface structure with a multiplicity of structural elements. Depending on the ergonomics of the entire applicator and after the application application and the cosmetic preparation to be applied, the surface structure may have a preferred direction. As a result, various effects, such as a velor effect, and different entrainment properties for the cosmetic preparation can be adjusted. This provides for improved distribution and / or blending the cosmetic preparation with a more pleasant sensation during skin contact.

Depending on the application, different geometric arrangements and dimensions of nubs, lines, grooves, strips, waves, honeycombs, cups, cams, crowns or other eroding knurl or cord structures may be preferred as surface structures of the applicator part. These can be regular or irregular. It can be so from those with a closed surface to those with an open-pored surface, as z. B. has a sponge applicator, a plurality of applicators are simulated.

The geometrical design of the applicator part itself can in many ways, for. B. wedge-shaped, convex, cylindrical, with or without (flat) application surfaces (flattenings), with spherical segment, tapered in projectile form or as a cone towards the top, or designed in other design forms depending on ergonomics and design considerations.

The method for producing such an applicator provides that in the two-component injection molding process, the applicator part is injection molded in the longitudinal direction of the applicator to the holding part by means of a spraying machine, or completely or partially encapsulated, so that the holding part with a hard core with individually adapted extension forms. As a result, and by the choice of Applikatorteilkunststoffes the degree of flexibility of the applicator can be adjusted freely, without generally complicating the manufacturing process. Furthermore, the disadvantages of the complex production and the microbial load do not occur because the injection molding of the Applikatorteilkunststoffs, as mentioned, takes place in hostile conditions for microorganisms.

It is not crucial that the holding part is completely generated in the preceding injection molding of the holding part plastic or consists exclusively of plastic. Likewise, at least one insert, for example made of metal, wood or duroplastic in the form of a ferrule or as a latching element for subsequent connection with the before spraying the holding part Cosmetic stick or the like. Are inserted into the spraying machine, so that during the injection process, ie during the overmolding with the holding part plastic, a composite molded part is formed. The sterility is thus ensured even in this case, as may be killed with the insert in the injection molding machine bacteria or microorganisms already during the encapsulation with the holding part plastic. Particularly preferably, therefore, the holding part is at least partially made of plastic in the same spraying machine in a preceding injection molding of the Applikatorteils injection process, so that even contact with germs during production is avoided as possible.

It is advantageous if the injection molding of the applicator part takes place such that a connecting layer is formed between the applicator part and the holding part, which has a mixing layer consisting of the applicator part plastic and the holding part plastic. In this way, a material-secure connection between the holding part and the applicator is generated and at the same time niches between holding part and applicator are avoided, in which microorganisms accumulate preferentially, as the materials merge smoothly into each other. The mixing also has the effect that the applicator part can no longer be detached from the holding part in a non-destructive manner. It takes place in a transition region from holding part to applicator part, where the surface of the holding part is melted by the injection of the hot applicator material. The mixing layer is formed by mixing the Applikatorteilkunststoffes and the holding part plastic when molding the Applikatorteils to the holding part.

Depending on the material, this effect is intensified by the fact that injection molding takes place after the injection process for the production of the holding part before its complete cooling down to ambient or room temperature. A favorable processing temperature of the holding part material is between 30 ° C and 80 ° C and preferably between 60 ° C and 80 ° C. This corresponds to a preferred cooling time after spraying the holding part depending on the material thickness of the holding part and the ambient temperature of 10 to 25 Seconds. In the case of other materials, however, the injection molding can also take place at a lower processing temperature (5 ° C. or less). In any case, by selectively selecting the processing temperature which is suitable for the material, the holding part can be melted more or less strongly when the applicator part is sprayed on, and thus the thickness of the mixing layer can be adjusted. An advantageous mixing layer thickness is between 1/100 mm to a few 1/10 mm. Optionally, the holding part can also be preheated prior to injection of the applicator. The formation of a mixing layer can in this way also be controlled independently of the production of the holding part and, in principle, can also be transferred to inserts made of thermoplastic material or the like.

Alternatively or in addition to the material-mixing layer, the connecting layer has a positive connection between the applicator part and the holding part.

In the method for producing an applicator according to the invention, an injection mold with a laser-sintered negative of the surface profile of the applicator part is preferably used when the applicator part plastic is sprayed onto the holding part. As a result, a desired regularity of the surface structure with desired profile depth of the structural elements can be produced in a simple and reproducible manner, as is not the case with the known methods. Depending on the elasticity of the applicator part or hardness of the applicator part plastic, on the one hand any feeling (eg velvety, rough, smooth, rubbery etc.) and on the other hand depending on the properties of the cosmetic preparation (viscosity, surface tension, Wetting or surface adhesion, etc.) achieve a desired depot and / or entrainment effect, a required capillary effect and / or a (pressure-dependent) dispensing behavior.

In an advantageous embodiment, the applicator part plastic is a thermoplastic elastomer (TPE). On the one hand, this may be a block copolymer which consists of blocks of different monomers consists. Due to the possibility of variation of the chemical composition and "architecture" of the molecular chains, it is possible to produce plastics with different properties, since agglomerates or physical networks of the individual building blocks are formed in the plastic due to the insolubility of the individual sequences of the chains. Copolymers, thermoplastic polyester elastomers, thermoplastic polyurethanes, soft polyolefin thermoplastics or thermoplastic polyamide On the other hand, a TPE blend consisting of a thermoplastic matrix and elastic particles can be used.From melting the matrix, the material can be processed like a thermoplastic, giving the elastic particles plastic its elastic suitability for use. What is important is a good mixing and adhesion of the matrix to the particles. this type material include PP-EPDM, _PP-1 PP-NR IIR blends or Pol yolifinthermoplasts as PP-EPM-blend.

By using a suitable TPE material, a wide range of mechanical, haptic, optical, dynamic or wetting properties can be achieved, such as a wide range of hardness, temperature resistance, deformation resistance, oil resistance, hydrolysis resistance, weather resistance, processability, adhesion to the holding part plastics, Dyeability, damping, strength, abrasion and the like.

In particular, with regard to the haptic properties, it proves to be advantageous to use a thermoplastic elastomer having a hardness of 2 to 45 Shore A. In the range of 10 to 40 Shore A and in particular to 15 Shore A, a thermoplastic silicone elastomer has emerged as a preferred applicator plastic part. By using thermoplastic elastomer as a blend with a silicone rubber component, it is possible to achieve an excellent release effect between the applicator plastic and the cosmetic preparation and thus to adjust the parameter of the (required) wetting. Other objects, features and advantages of the invention will be explained in more detail below with reference to an embodiment with the aid of the drawings. Show it:

Fig. 1a-1c an embodiment of a dip applicator according to the invention;

2a, 2b a schematic 3D view and an enlarged detail of the applicator part of a first embodiment of the dip applicator according to the invention with a lamellar surface structure and four longitudinal channels;

3a, 3b a schematic 3D view and an enlarged detail of the applicator of a second embodiment of the invention

Dip applicator with a knob-like surface structure and six longitudinal channels;

4a, 4b a schematic 3D view and an enlarged detail of the applicator part of a third embodiment of the dip applicator according to the invention with a lamellar surface structure and three

Longitudinal channels;

5 is a schematic sectional view of the applicator part of a fourth embodiment of the applicator according to the invention with a lamellar surface structure and a spiral channel;

6 shows a side view of the applicator part of a fifth embodiment of the applicator according to the invention with an annular surface structure and six longitudinal channels;

7 shows a side view of the applicator part of a sixth embodiment of the applicator according to the invention with a smooth surface structure and six longitudinal channels; 8 shows a side view of the applicator part of a seventh embodiment of the applicator according to the invention with an annular surface structure and six longitudinal channels;

9 is a side view of the applicator part of an eighth embodiment of the applicator according to the invention with a further annular

Surface structure and two longitudinal channels;

Fig. 10 is a side view of the applicator portion of a ninth embodiment of an applicator according to the invention having a smooth surface structure and a plurality of longitudinal channels;

11 is a side view of the applicator part of a tenth embodiment of the applicator according to the invention having a groove-shaped surface structure and two longitudinal channels;

Fig. 12 is a side view of the applicator portion of an eleventh embodiment of an applicator according to the invention having a knurled surface structure and a spiral channel;

13 shows a side view of the applicator part of a twelfth embodiment of the applicator according to the invention with a bristle-like surface structure and a spiral channel.

14 shows a side view of the applicator part of a thirteenth embodiment of the applicator according to the invention with a crown-like surface structure and a spiral channel.

The illustration of FIG. 1a shows the basic structure of a dip or handle Appliaktors 100 having a handle and fastening part 112 with an internal threaded connection 114 for screwing with a container, not shown, for the cosmetic preparation. At its end opposite the grip part 112, one is generally rotationally symmetrical Holding part 116 of the applicator arranged. Handle and fastening part 112 and holding part 116 may be in the form of an injection molded part in one piece or as separate parts by clamping and / or latching connection form and / or non-positively connected to each other. If necessary, the durability of the compound can be enhanced by additional bonding (for example by hot glue).

In Fig. 1 b and Fig. 1c is a arranged on a holding portion 118 of the holding member 116 in the axial extension, cylindrical trained with bevel 114 applicator 120 shown in section. The holding section protrudes into the applicator part 120 in the form of a projection 122. This design is achieved by means of a 2K injection molding process by encapsulation of the holding portion 118 and the pin 122 of the previously molded in a first form holding member 116 in a second injection mold. If the holding member 116 is preferably made of thermoplastic resin such as polyethylene, polypropylene, polyvinyl chloride, polyacetal, polyacetal, polystyrene or its copolymers, or polyamide, and the applicator 120 is made of thermoplastic elastomer, silicone rubber, NBR, plasticized PVC or the like. Immediately after Spraying the holding part 116 molded onto this, forms a mixing layer in which mix the various plastics of the holding part 116 and the applicator 120 (for example, by diffusion) with each other. When cutting such an applicator, this mixing layer can be detected or analyzed with the naked eye or under the microscope. Depending on the temperature of the holding part, the mixing layer will be thicker or less thick when the applicator part is sprayed on.

As shown in FIG. 1b, for example, the applicator part can be made solid or, as in FIG. 1c, hollow so as to achieve a stiffness of the applicator which is suitable for the respective application. In addition, the rigidity can be increased by the approach 122 of the holding portion of the applicator portion in the axial direction a little further or completely passes through, thus forming a "hard core". In addition to the connection between the holding part 116 and the applicator 120 through the mixing layer, the applicator 100 in the region of the holding portion 118, ie at the transition from the holding part 116 to the Applikatorteil 120, further elements 126 of a positive connection, namely a circumferential annular groove in the outer periphery of Holding members 116 and a corresponding circumferential annular projection on the inner periphery of the applicator 120. As shown, these elements 126 can be provided in addition to the compound connection to increase the strength of the connection between the holding part 116 and applicator 120, without the hygiene properties worsen, but are not mandatory.

The assembly of the dip applicator 100 and the container takes place in a final assembly process after filling the container with cosmetic preparation. In this case, the holding part 116 is immersed together with the applicator 120 in the container, the filling level usually extends into the region of the immersed applicator 120. Subsequently, the dip applicator is screwed to the container and thus sealed.

FIG. 2 a shows the applicator part 200 of the applicator according to the invention in accordance with a first embodiment, the surface of which has a multiplicity of structural elements in the form of lamellae 210. The applicator part is basically rotationally symmetrical about its longitudinal axis, which in this illustration is horizontal, coinciding with the longitudinal extension direction of the applicator (not shown). The applicator part tapers only slightly in the longitudinal extension direction with increasing distance from the holding part and is closed off by a spherical segment-shaped dome 212. The lamellae 210 extend in an annular manner, parallel to one another and around the applicator part perpendicular to its longitudinal extension direction and are perpendicular to its base surface. As is shown enlarged in FIG. 2b, they have a height above the base area of the applicator part with an average diameter of 0.5 mm and a thickness of 0.3 mm. Their distance is about 0.1 mm and can be three times larger than their thickness. The lamellae are at equal angular intervals (of 90 ° each) through four channels 220 interrupted and therefore actually form only ring segments. The channels 220 extend in the longitudinal direction of the applicator on the surface and end before reaching the dome. They have a semicircular cross-sectional profile perpendicular to the longitudinal direction of the applicator. They serve to transport a cosmetic preparation in the longitudinal direction of the Applikatorteils, which is available in this way over the entire length of the applicator for applying in uniform thickness. The lamellae or the gaps between them are used for combing, ie for separating hairs or hairs (eyelashes, eyebrows) during application.

In the manner shown, the applicator is molded with its planar (right) end 214 to the holding part, not shown, in the manner shown in Fig. 1, wherein a pin of the holding part depending on the desired stiffness of the applicator more or less far into the applicator 200 projecting is overmoulded.

FIGS. 3 a and 3 b also show an oblong basically rotationally symmetrical applicator part 300, which has the same basic contour as that according to FIG. 2. In contrast thereto, knob-like structural elements 310 are formed on its surface. The diameter of the individual knobs 310 is between 0.2 mm and 0.4 mm, and their length 0.5 mm to 1 mm. The knobs have rounded tips and therefore slide smoothly over the skin even with greater hardness of the Applikatorteilkunststoffes. The nubs 310 are applied over the entire circumference and the entire length on the applicator part surface, covering the entire area and regularly. Only the dome 312 is not populated with nubs and the dimpled surface is also interrupted at equal angular intervals (of 60 ° each) by six channels 320. The channels 320 extend in the longitudinal direction of the applicator on the surface and run together on the dome. They have a triangular cross-sectional profile perpendicular to the longitudinal direction of the applicator, so that they taper with increasing depth. They also serve due to capillarity for transporting a cosmetic preparation in the longitudinal direction of the applicator part. The knobs 310 are used primarily for brushing, ie also for separating hairs (eyelashes, eyebrows) during the application of the cosmetic preparation. Although the small distances between the bristles cause a capillary force to be created at this point as well, which produces a component in the direction of the applicator part tip, the distribution of the cosmetic preparation mainly takes place in the channels 320 due to their capacity and straightness.

The embodiment of the applicator part 400 shown in FIGS. 4a and 4b has a threefold symmetry about the longitudinal axis, ie three structures 410, 412, 414 rotated uniformly by 120 ° each. Each structure has a shovel-shaped cross section with a concave section 420 and a convex one Section 422. The concave portion 420 each forms a longitudinally extending straight channel for transporting or evenly distributing the cosmetic preparation in the longitudinal direction. On the convexly curved side 422 a plurality of parallel slats 424 is arranged perpendicular to the longitudinal direction of the applicator. The curvature of the convex portion extends over almost a quarter circle each. The lamellae are substantially finer and denser with an extension perpendicular to the applicator (height) of 0.32 mm and a thickness of 0.25 mm, which also corresponds to their distance, as in the case of Fig. 2. They are therefore used to singler finer Hairs (eyelashes, brows). The concave channel 420 of one structure merges with the sipes of the next structure in an S-shaped wave into the convex portion 422. When applying the channel 420 and then the fin comb is thus unmitttelbar spread over the skin or hair part and thus achieve a uniform application ^'and separating the bristles of a sweep in succession. The applicator part ends on the side facing away from the holding part in its longitudinal direction blunt, ie with a flat surface 426, or tapered.

FIG. 5 shows an exemplary embodiment of an applicator part 500 in the sectional view with the essentially same basic geometry as the one Previous, which also has circumferentially arranged lamellar structure elements 510. However, these are not arranged parallel to each other but wound in the form of a single spiral (thread-shaped) about the longitudinal direction of the applicator. In this case, the gap (the 5 thread pitch) between each two adjacent lamellae forms the channel 520, which likewise describes a multiplicity of spiral turns around the applicator part 500. Instead of a single spiral and several spiral spirals are possible, which then form multiple channels. As the number of spirals or channels increases, their pitch and thus the component in the longitudinal direction of extension of the applicator part becomes larger, which accelerates the transport of the preparation in the longitudinal direction due to the capillary forces acting.

Finally, it can also be seen in the section of FIG. 5 that the core 530 formed by the holding part extends over almost the entire longitudinal extension of the applicator part 500. As a result, a high rigidity is achieved, which is needed for example for use as a comb.

The embodiment of FIG. 6 shows an applicator 600 with a conical G round structure. The structural elements on the Applikatorteiloberfläche are rounded rings 610. These are parallel to each other in approximately one of their thickness corresponding distance perpendicular to the longitudinal direction of the applicator disposed around this. They differ from the blades of previously described applicators by a different thickness-to-height ratio. In their extension perpendicular to the Applikatorteiloberfläche the rings have a height of 0.2 mm to 0.5 mm and 5 in particular of 0.35 mm at a width of 0.3 mm to, as shown here, 1, 2 mm. Due to the curves of the rings 610, these are only secondarily suitable for combing but are used, for example, to apply the preparation in the form of fine lines, a stripe pattern or in the form of ornaments. Six channels 620 are arranged in this embodiment in turn in the longitudinal direction of elongation at equal angular intervals of 60 °. The bottom of the channels 620 has a depth similar to that of the surface of the channel Applicator between the rings corresponds. In other words, their depth is equal to the depth of the gaps or grooves 612 formed in the interstices of the rings. These grooves 612 thus seemingly interrupt the channels, but at the same time serve as depots in which cosmetic preparation can be circumferentially distributed and stored, while the channels transport in the longitudinal direction and thus produce a same "level" in all depots 612.

FIG. 7 shows an exemplary embodiment of an applicator part 700 according to the invention, which has a basic structure with a cylindrical section 710 with which it, on the one hand, adjoins the retaining part and a crowned truncated cone section 712. Further (top) in the longitudinal direction is followed by a tapered tip 714, which is a continuation of the holder part core passing through the applicator part. Structural elements are not provided here. In the Appliaktorteiloberfläche but four longitudinally extending channels 720 are arranged at equal angular intervals over the convex truncated cone portion 714 and partially on the tapered tip for transporting the preparation in the longitudinal direction. The channels thus extend not only beyond the applicator part but beyond one of its axial ends into the tapered tip section 714 of the holding part adjacent thereto in the longitudinal extension direction.

The embodiment of FIG. 8 similar to that shown in Figure 6 an applicator 800 with a conical G round structure, in which the structural elements on the Applikatorteiloberfläche but beveled rings 810. These are in turn arranged parallel to each other in approximately one of their thickness corresponding distance perpendicular to the longitudinal direction of the applicator around this. Due to a very obtuse angle of the chamfers of the rings 810, these are also only secondarily suitable for combing but serve, for example, for appllizieren the preparation in the form of fine lines, a stripe pattern or in the form of ornaments. Again, six channels 820 in the longitudinal direction in provided equal angular intervals of 60 °, the depth of which coincides with that formed in the interstices of the rings 810 Depot 812.

In Fig. 9, an embodiment of an applicator 900 is shown, although having similar structural elements as that shown in Fig. 6, namely rounded, uniformly parallel, approximately their thickness spaced corresponding rings 910. A significant difference, however, is that the Rings 910 of applicator component material are individually sprayed onto a cylindrical core 914 of holding part material. The depots 912 between the rings therefore extend to the holding part. They are thus much deeper and can accommodate more preparation. Also, in this example two oppositely disposed channels 920 extend in depth down to the holding part. Therefore, the purpose of the longitudinal distribution of the preparation due to capillary effects the same effect as in the case of the applicator according to FIG. 6 or 8.

FIG. 10 shows a detail of an applicator 1000 according to the invention, similar to that of FIG. 7, a basic structure having a cylindrical portion 1010, a straight truncated cone portion 1012 and further (top) in the longitudinal direction of a this time the truncated cone continuing tip 1014 with a spherical tip end 1016 , Only here is the applicator alone limited to the truncated cone portion 1012, while the holding part axially on the one hand in the form of the cylindrical portion 1010 and on the other hand in the form of the tip 1014 in continuation of the Halteteilkems. Structural elements are not provided here. Alone in the Appliaktorteiloberfläche a plurality of channels 1020 are arranged over the truncated cone portion 1014 at equal angular intervals for transport of the preparation in the longitudinal direction. The cross-section of the channels 1020 tapers towards the tip 1014 to the same extent as that of the truncated cone 1014. This applies equally to the depth (not to be seen) as well as to the width of the channels. This enhances the capillary effect towards the tip. The higher the number of channels, the closer the applicator portion of the rotational symmetry. In a case of higher symmetry, the orientation of the applicator is about its longitudinal or rotation axis irrelevant, which simplifies its handling.

In the exemplary embodiment according to FIG. 11, the applicator part 1100 tapers in the longitudinal direction with increasing distance from the holding part (at the lower end, not shown). The degree of rejuvenation increases towards the tip, resulting in a characteristic bullet shape. The structural elements in this case are incorporated in the applicator sub-surface 1110, tapered with increasing depth grooves 1112 of triangular cross-section, which provide predominantly for a uniform angular distribution of the preparation. Along the applicator part, the channels 1120 connecting the grooves with the same cross-section and the same profile depth run for the distribution of the preparation in the longitudinal direction.

FIG. 12 again shows an exemplary embodiment of an applicator part 1200 which, with regard to its basic geometry, is similar to that of FIG. 10. Also, it has cylindrical section 1210, a straight truncated cone section 1212 and further (top) longitudinally a truncated cone continuing tip 1214 with a spherical tip end 1216. In the truncated cone section 1212 alone, a multiplicity of fine grooves 1220 are arranged at equal angular distances for the rapid and-by their multiplicity-uniform transport of the preparation in the longitudinal direction. In addition, this embodiment has a spiral or thread-shaped circumferential annular groove 1222 with a larger volume than the grooves 1220, which extends in the longitudinal direction over the truncated cone portion 1212 and the tip 1214. This serves on the one hand as a depot and on the other hand as the main channel. The grooves 1220 and the annular groove 1222 together form a finely branched system of channels, thus ensuring a uniform and rapid supply of the surface with cosmetic preparation.

The applicator parts 1300 in FIGS. 13 and 1400 in FIG. 14 are also provided with grooves 1320 or 1420 running around in a spiral or thread. The basic form of both applicator parts 1300 and 1400 can be referred to in these examples again as Bullet shape are called, the total length is much shorter than in the previous examples. As structural elements 13 bristles 1310 are provided in the example of FIG., Which have an extension substantially perpendicular to the Applikatorteiloberfläche of 0.8 mm and a diameter of 0.2 mm. The bristles differ from the previously described knobs and serrations by their substantially cylindrical shape. They thereby generate another tactile sensation on the skin and another entrainment and capillary effect perpendicular to the applicator part surface.

In the example of FIG. 14, crowns 1410 are formed as structural elements on the surface of the applicator part. These are hexagonal and have circumferentially each arranged at the corners of prongs. The cross sections of the crowns are different. In the region of the applicator part with a larger cross section, the cross section of the crowns is also increased, while the cross section of the crowns in the region of the tapered applicator part tip is also smaller. The crests of the crowns have a height of about 0.2 mm to 0.4 mm above the base of the applicator, while the surface of the crowns is formed in the center of each cup-shaped. The peculiarity of the crown structure lies in the fact that, even with a tapered tip of the applicator part, an arrangement of prongs which is repeated in the same way and with almost uniform intervals between the crowns over the entire applicator part is established. Overall, such a good coverage of the applicator is guaranteed with structural elements, which ensures a uniform application of cosmetic preparations without banding.

All illustrated embodiments of applicator parts have in common that, in comparison to, for example, flocked applicators, they have only a small increase in surface area, ie a smaller structural area in relation to the applicator part base surface, whereby the risk of microbial loads is reduced even after the first application. Furthermore, the inventive design of one or more channels on the outer surface of the applicator ensure an adequate supply in particular the applicator tip with cosmetic preparation which is most preferably used for application, when the channel or the channels extend substantially over the entire length of the applicator part and the channel is adapted to the properties of the preparation by suitable choice of the applicator part plastic and the dimensions.

The driving ability (the holding volume and the holding force) can be set much more targeted by the choice of suitable structural elements and thus to each application, d. H. individually to the specific area of the skin intended for application and to the properties of the cosmetic preparation (viscosity, surface adhesion, coverage). This is facilitated by the injection molding method according to the invention, which is characterized by the use of an injection mold with a laser-sintered negative of the surface profile of the applicator.

The entrainment capability can also be adjusted to the particular application by suitably selecting the frictional resistance, for example by making a suitable choice of the applicator part plastic and its hardness.

Neither enumeration of the application examples of the applicator according to the invention nor its structures are to be understood as exhaustive.

Advantageous for some applications, in addition to the example described above in detail, for example, crown-shaped structures, each comprising circumferentially arranged teeth. The crowns could be hexagonal with a trained at each corner spike different or equal height. The prongs of the crowns may for example have a height of about 0.2 mm to 0.4 mm above the base of the applicator, while the surface of the crowns is formed in the center of each cup-shaped.

In principle, each surface structure may have one or more preferential directions which are not necessarily perpendicular to the applicator part. have to stand. 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 channels can also be used in combination on the same applicator part. For example, different structures for different applications (blending, distributing, etc.) may be provided on opposite surfaces of the same applicator part. It is also possible to mix the structural elements on an application surface or over the entire applicator part.

Claims

claims

An applicator (100) for immersion in a cosmetic preparation and for applying the same to the skin, semi-mucous membrane, mucosa, hairs or hair with a holding part (116) and to the holding part (116) molded applicator (120, 200), wherein both the holding part (116) and the applicator (120, 200) at least partially made of plastic and the plastic of the holding part (116) is harder than the plastic of the applicator (120, 200) and wherein the applicator (120, 200) its outer surface has at least one substantially over the entire length of the applicator (120, 200) extending channel (220) which is adapted to distribute the cosmetic substance in the longitudinal direction of the applicator (120, 200).

2. Applicator (100) according to claim 1, characterized in that the channel (220) has a varying width over its length.

3. An applicator (100) according to claim 1 or 2, characterized in that the width of the channel (220) is approximately equal to the depth of the outer surface of the applicator (200).

4. Applicator (100) according to any one of the preceding claims, characterized in that the channel (220) tapers with increasing depth.

5. Applicator (100) according to any one of the preceding claims, characterized in that the channel (220) extends substantially in the longitudinal direction of the applicator (200).

6. Applicator (100) according to one of the preceding claims, characterized in that the channel (1220) describes at least one spiral turn around the applicator part (1200).

7. Applicator (1000) according to any one of the preceding claims, characterized in that the cross section of the channel (1020) for

Tapered tip of the applicator.

An applicator (1000) according to claim 7, characterized in that the depth and width of the channel (1020) decrease approximately equally towards the tip of the applicator.

9. Applicator (100) according to any one of the preceding claims, characterized in that the channel (620, 820. 920, 1120) by at least one depot (612, 812, 912, 1112) is interrupted.

10. The applicator (100) according to claim 9, characterized in that the depot (612, 812, 912, 1112) by a substantially perpendicular to the applicator about its

Longitudinal direction extending groove or groove is formed.

11. The applicator (100) according to claim 9 or 10, characterized in that the depot (612, 812, 912, 1112) and the channel relative to the outer surface of the applicator have the same depth.

12. The applicator (100) according to any one of the preceding claims, characterized in that the channel extends beyond at least one end of the applicator (700) also in a longitudinal extension direction adjacent thereto portion of the holding part (714) into it.

13. The applicator (100) according to any one of the preceding claims, characterized in that the applicator (120) has a surface structure with a plurality of structural elements.

14. An applicator (100) according to claims 13, characterized in that the structural elements comprise nubs (310).

15. An applicator (100) according to claim 14, characterized in that the nubs (310) have an extent perpendicular to the applicator part surface between 0.35 mm and 0.7 mm and in particular of 0.5 mm.

16. An applicator (100) according to claim 15, characterized in that the nubs (310) have a diameter between 0.1 mm and 0.6 mm and in particular of 0.4 mm.

17. Applicator (100) according to claim 13, characterized in that the structural elements comprise crowns, each with circumferentially arranged teeth.

18. An applicator (100) according to claim 17, characterized in that the crowns are hexagonal, wherein at each corner in each case a prong is arranged.

19. An applicator (100) according to any one of claims 17 or 18, characterized in that the crowns have different cross-sections.

20. An applicator (100) according to any one of claims 17 to 19, characterized in that the prongs have an extension perpendicular to the Applikatorteiloberfläche between 0.2 mm and 0.6 mm and in particular of 0.4 mm.

21. An applicator (100) according to claims 13, characterized in that the structural elements comprise lamellae (210, 424, 510).

22, applicator (100) according to claim 21, characterized in that the lamellae (210, 424, 510) are arranged annularly, substantially rotationally symmetrical about the longitudinal extension direction of the applicator.

23. An applicator (100) according to claim 22, characterized in that the gap between each two adjacent lamellae forms the depot.

24. An applicator (100) according to claim 22, characterized in that the lamellae (510) are arranged spirally around the longitudinal extension direction of the applicator, wherein the gap between each two adjacent lamellae forms the channel.

25. Applicator (100) according to any one of claims 21 to 24, characterized in that the lamellae (210, 424, 510) has an extension perpendicular to the applicator part surface between 0.25 mm and 0.7 mm and in particular from 0.3 mm to 0.5 mm.

26. Applicator (100) according to claim 13, characterized in that the structural elements comprise bristles (1410).

27. Applicator (100) according to claim 26, characterized in that the bristles (1410) have an extension perpendicular to the Applikatorteiloberfläche between 0.3 mm and 1 mm.

28. An applicator (100) according to claim 27, characterized in that the bristles (1410) have a diameter of 0.4 mm to 0.6 mm at an extent perpendicular to the Applikatorteiloberfläche between 0.4 mm and 0.6 mm.

29. An applicator (100) according to claim 28, characterized in that the bristles (1410) at an extension perpendicular to the Applikatorteiloberfläche between 0.7 mm and 1 mm have a diameter of 0.1 mm to 0.3 mm.

30. Applicator (100) according to any one of the preceding claims, characterized in that the holding part (1 16) extends at least partially in the longitudinal direction of the applicator (100) into the applicator (120) inside.

31. An applicator (100) according to any one of the preceding claims, characterized in that between the holding part (116) and the applicator (120) a holding portion (118) is formed, which is a

Blending layer (124) consisting of the Applikatorteilkunststoff and the holding part plastic.

32. The applicator (100) according to claim 31, characterized in that the mixing layer (124) is between 1/100 mm and several 1/10 mm thick.

33. Applicator (100) according to any one of claims 31 or 32, characterized in that the holding portion (118) has a positive connection (126) between the applicator (120) and the holding part (116).

34. Applicator (100) according to any one of the preceding claims, characterized in that the applicator plastic part contains silicone rubber.

35. Applicator (100) according to any one of claims 1 to 33, characterized in that the applicator plastic part contains plasticized PVC.

36. Applicator (100) according to any one of claims 1 to 34, characterized in that the applicator plastic part is a thermoplastic elastomer.

37. Applicator (100) according to claim 36, characterized in that a block copolymer is used as the applicator plastic part.

38. Applicator (100) according to claim 36, characterized in that the thermoplastic elastomer is formed by mixing a thermoplastic substance with elastic particles (blend).

39. Applicator (100) according to any one of claims 36 to 38, characterized in that the thermoplastic elastomer has a hardness of 2 to 45 Shore A.

40. Applicator (100) according to claim 39, characterized in that a thermoplastic silicone elastomer having a hardness of 10 to 15 Shore A is used as the applicator plastic part.

41. Applicator (100) according to any one of the preceding claims, characterized in that the holding part plastic is a thermoplastic plastic, preferably polyethylene, polypropylene,

Polyvinyl chloride, polyacetal, polyacetal, polystyrene or its copolymers, or polyamide contains.

42. Applicator (100) according to any one of the preceding claims, characterized in that the holding part (116) consists at least partially of thermosetting plastic.

43. Applicator (100) according to any one of the preceding claims, characterized in that the holding part (116) at least partially

Metal exists.

44. System having an applicator according to one of the preceding claims and a cosmetic preparation, characterized in that the cross section of the channel to the physical properties of the cosmetic preparation and the

Interaction with the Applikatorteilkunststoff, in particular the surface tension and wetting, adapted.