US20240099450A1

US20240099450A1 - Cosmetic applicator

Info

Publication number: US20240099450A1
Application number: US18/267,778
Authority: US
Inventors: Erika VON JAN
Original assignee: Geka GmbH
Current assignee: Geka GmbH
Priority date: 2020-12-18
Filing date: 2021-11-29
Publication date: 2024-03-28
Also published as: CN115379779A; KR20230129240A; WO2022128428A1; EP4262473A1; JP2023553688A

Abstract

A cosmetic applicator includes a bristle-bearing core, a bristle trimming including a plurality of bristle belts, each bristle belt including a plurality of bristles arranged in succession along a belt line extending along the periphery of the core, with a completely bristle-free space between immediately adjacent belt lines, a plurality of immediately adjacent belt lines have a different course, such that lashes which lie in bristle-those free spaces where the plurality of belt lines are closest to each other, are pulled apart in the direction of the roll axis of the core when the cosmetic applicator is rotated about the roll axis of its core.

Description

CROSS-REFERENCE TO RELATED APPLICATION

This application is a U.S. National Stage application of International Application No. PCT/EP2021/083362, filed Nov. 29, 2021, which claims priority to German Application No. 202020107411.3, filed Dec. 18, 2020, European Application No. 21554788.0, filed Feb. 2, 2021 and European Application No. 21182081.6, filed Jun. 28, 2021, the contents of each of which are hereby incorporated by reference.

BACKGROUND

Technical Field

Cosmetic applicators are used to apply decorative and cosmetic products to the body, preferably to the face. Furthermore, cosmetic applicators are often used to apply make-up such as mascara to the eyelashes, which is why this type of cosmetic applicator is often called a mascara brush due to its appearance.

Background Information

For this purpose, a conventional cosmetic applicator is usually dipped into mascara once and distributed on the lashes with a twisting motion. This emphasizes, thickens, adapts the shape of the lashes and sometimes lengthens them. These effects are usually achieved by tinting the eyelashes.
Such a conventional cosmetic applicator is usually designed to pick up and spread the mascara by its bristles and/or bristle discs. Due to the simple alignment of the bristles, the lashes are only pulled in one direction when the cosmetic applicator rotates. The lashes usually take their place in the bristleless spaces between the bristles and are guided by the rotary movement through the adjacent bristles, while at the same time the lashes are wetted with mascara. The eyelashes are thus pressed into the path created by the interaction of the bristles and the spaces between them and are pulled forward, i.e. lengthened, by the friction with the mascara.

SUMMARY

It has been discovered that with conventional cosmetic applicators, the lashes are only pulled away from the eyelid orthogonally due to the arrangement of the bristles, which are usually only arranged orthogonally to the core of the applicator. This makes it—at least for non-experienced users—difficult to reproduce the actual growth direction of lashes, which limits the design possibilities. In addition, after application, the lashes stand out from the eyelid in only one direction in some areas, as they are pressed together in the bristle-free spaces between the bristles during the rotation. This means that the mascara is generally not ideally distributed and the result of the moistened lashes is not seldom perceived as suboptimal.
In view of this, the object of the disclosure is to specify a device or means by which the lashes can be better separated and brought into a fan-like divergent position relative to one another.
This problem is solved with the features disclosed herein.
For this purpose a cosmetic applicator with a bristle-bearing core is proposed. The bristle trimming of the core has several bristle belts. Each bristle belt includes several bristles, which are arranged completely (thus in whole or substantially completely) one behind the other along a belt line extending along the circumference of the core. There is a completely bristle-free space between immediately adjacent belt lines, which can also be called a “channel”.
The solution according to embodiments of the invention is characterized by the fact that several directly adjacent belt lines have a different course. Furthermore, channels are formed between these belt lines—usually obstacle-free—into which lashes can be inserted without any special efforts. The channels also have a different course. The cosmetic applicator in general is usually designed in such a way that there is at least a rolling angle range of—preferably at least 45°, better at least 90° and ideally at least approximately 180°-on the applicator, in which the following happens when the applicator is rolled: The channels continuously strive to the side. They strive towards the distal or proximal end of the bristle-bearing core. In most cases, the channels are even designed in such a way that some of the channels extend to the proximal end and some of the channels extend to the distal end.
Thus, the lashes, which are where the multiple belt lines have the smallest distance between each other, are pulled apart in the direction of the roll axis of the core when the cosmetic applicator is rotated around the roll axis of its core. Preferably the roll axis lies, at least partially, preferably fully, inside the bristle-bearing core.
The eyelashes can thus be distributed in the channels between the respective bristle belts, just like with conventional cosmetic applicators. The starting position for this is preferably the position in which the belt lines have the smallest distance from each other and thus in many cases form channels that are orthogonal to the roll axis when viewed in projection.
Due to the different course of the belt lines, the lashes are separated during a rotational movement around the roll axis of the cosmetic applicator in such a way that the lashes are virtually pushed away from each other and are not forced onto a narrower path and thus further compressed, as is usually the case with conventional cosmetic applicators.
This results in an increased distance between the lashes, which increases again, especially in the area of the lash tips. This enables the mascara to be applied in such a way that the lashes of an eyelid appear more voluminous so that an innovative make-up result is achieved.
The term “bristle trimming” describes the entirety of all bristles which are on the bristle-bearing core.
A “bristle belt” in the sense of the disclosure includes a number of bristles which are arranged completely or substantially completely one behind the other along the circumference of the core.
The “belt line” is in principle endless, and can usually form a continuously running line, along which the bristles are arranged one behind the other and once completely loop in the circumferential direction around the core. Thus, the bristle belt can be clearly distinguished from a “bristle row”.
The term “bristle row” describes bristles which are located one behind the other in longitudinal direction on the outside of the core. Thus, a bristle row always contains only one bristle of a bristle belt.
A “belt line” in the sense of the disclosure thus designates an imaginary line which is formed by the connecting lines of the foot points of the individual bristles of a bristle belt. Thus, a belt line also runs along the circumference of the core.
A belt line does not necessarily have to be a circular line that lies in a single plane. Rather, there are also belt lines that are three-dimensional objects. According to the disclosure these belt mines are not jumping or unsteady, jagged lines, and preferably also are those that do not change their direction locally with a radius of curvature of less than 0.4 mm.
The “bristle-bearing core” or just “core” refers to the carrier part of the cosmetic applicator that is covered with bristles. In a broader sense, this includes the entire cosmetic applicator except the bristles. In a narrower sense, however, the “core” is only the part of the cosmetic applicator that is connected to the handle or the attachment shaft (to which the handle is attached) of the cosmetic applicator. The core and the attachment shaft are preferably separated from each other by at least one shoulder.
The “roll axis” refers to the axis around which the entire cosmetic applicator rotates during the aforementioned rotational movement that must be performed for the intended use of the cosmetic applicator. The roll axis is preferably the longitudinal axis of the handle or the attachment shaft of the cosmetic applicator, which is usually also the geometric center axis of the handle or the attachment shaft. The core with its bristles therefore also rotates around this roll axis. It should be noted that the roll axis does not necessarily have to be the geometric center axis of the core, which is generally referred to as the longitudinal axis L.
There is a number of embodiments for designing the invention in such a way that its effectiveness or usefulness is further improved.
Thus, it is particularly preferable if the cosmetic applicator is designed in such a way that the imaginary core cut surface, which is formed by a belt line and which is created when the core is thought to be cut by a hot wire that is guided along the belt line, along which bristles are arranged one behind the other, forms an imaginary swash plate. So a belt line running around the circumference creates a surface, which cuts the core in an individual way and is called “swash plate”. These swash plates perform a wobbling motion when the core rotates around its roll axis. The rotation of the core around its roll axis is preferred for each intended use of the cosmetic applicator. As such swash plates are formed, this offers the possibility to influence the course of the bristle-free spaces through the bristle belts and thus the result of the lashes.
The definitions of terms at the beginning of this document apply accordingly.
A “swash plate” in the sense of the disclosure also means, as mentioned above, an imaginary surface which is formed by a belt line. Since a belt line runs around the circumference of the core, the surface thus formed intersects the core in a way that is individual for each belt line. The term “swash plate” is chosen because this imaginary disk usually does not perform a uniform, radial rotational movement when rotating around the roll axis, but “wobbles”.
“Wobbling” here means the fact that the individual (geometric) local center axes of the respective swash plates are preferably not identical to the roll axis of the swash plates. The roll axis of the swash plates is again the roll axis of the core and therefore the roll axis of the entire cosmetic applicator. In most cases there is both a tilt angle and a horizontal and/or vertical deviation of the local center axis of a swash plate compared to the roll axis. In a broader sense, wobbling is thus caused by the angle and the distance of the center axis of the swash plates from the roll axis. In a narrower sense, the wobbling is caused by the tilt angle of the center axes of the swash plates to the roll axis and is the dominant and decisive wobbling motion.
Furthermore, it is preferred that such swash plates are designed in a way that they are different and therefore individual. This offers the possibility to individually design the course of the bristle-free spaces and above all to design them in such a way that these spaces narrow or preferably widen when the cosmetic applicator is rotated around the roll axis. This ensures that the lashes and especially their spreading to each other can be adjusted by the cosmetic applicator when used as intended, preferably so that the distance between the lashes increases.
Another preferred design is that the swash plates, which are formed by the multiple belt lines, form two groups of swash plates. One group of immediately adjacent swash plates, which are tumbling in the direction of the distal end of the core when the core rotates around its roll axis and a second group of immediately adjacent swash plates, which are tumbling in the direction of the proximal end of the core when the core rotates around its roll axis.
Thus, the tilt angle of the swash plate's center axis has a different algebraic sign compared to the roll axis in the first group than in the second group of swash plates.
These two groups of swash plates lead to the fact that the lashes are spread apart and thus separated particularly effectively, which increases the distance between the lashes.
The “distal end” of the cosmetic applicator represents the end of the core facing away from the handle.
The “proximal end” accordingly designates the end of the core facing the handle and thus the transition from the core to the handle or the attachment shaft.
It is also preferred that these two groups of imaginary swash plates are separated by at least one imaginary disk whose belt line forms a swash plate whose center axis is parallel to the roll axis of the core or whose center axis has an angle with respect to the roll axis of the core that is at least a factor of three smaller than the tilt angle of all other center axes of the swash plates in respect to the roll axis of the core.
Hereby at least one swash plate is formed, whose center axis is preferably parallel and in any case less than 5° inclined to the roll axis. Thus, at least one central swash plate is formed, while towards the distal and the proximal end, the tilt angles of the swashplates or their central axes line up at opposite tilt angles.
The imaginary swash plates can be characterized by at least one third, predominantly or all of them, that they preferably all or predominantly form a flat imaginary surface, which suits some manufacturing processes.
In other applications, the cosmetic applicator is also designed in such a way that the imaginary swash plates all or predominantly form a curved imaginary surface.
This also accommodates some production methods and offers the advantage of an even greater individuality and the possibility to achieve a further spreading and separation of the lashes.
The term “center axis” of the swash plate can be difficult to define for a curved surface. The center axis in this case represents the center axis of an equivalent flat surface. For this purpose a surface is preferably used, which is created when a purely flat surface intersects the core. The constant tilt angle of this flat surface corresponds to the local tilt angle of the swash plate with respect to a vertical plane at the intersection of the swash plate with the roll axis.
Another preferred design is a cosmetic applicator with bristles whose longitudinal axis is completely straight. On the one hand, this is more appropriate for most manufacturing processes. On the other hand, straight bristles are the right shape for the majority of bristle rows in order to separate them.
Furthermore, it is preferred that a cosmetic applicator is designed in such a way that there are curved and/or kinked bristles in the area where the belt lines are the shortest apart. This ensures that the lashes can be separated and pulled apart constantly and at a constant angle—at least in intervals—when the cosmetic applicator is rotated.
These kinked bristles are preferably designed in such a way that the bristles are kinked in the radially outer third or quarter.
Another preferred design is that the bristle-bearing core of the cosmetic applicator has a cambered design. This is defined by the area of a vertical cross-section through the core decreasing from the largest vertical cross-sectional area of the core towards both the distal and proximal ends of the core. This ensures that the bristles lying on the cambered side are spread even further apart due to the local curvature of the surface on which they stand.
It is also preferred that the bristles used in cosmetic applicators are at least predominantly conical in shape. On the one hand, this leads to a good guidance of the lashes during the intended application and on the other hand it is advantageous for some manufacturing processes.
Preferably, a cosmetic applicator also has at least one row of bristles composed of bristles whose longitudinal axes of the bristles are exactly or approximately parallel to each other and/or in which the distance between the longitudinal axes of the bristles is exactly or approximately identical and/or whose longitudinal axes of the bristles are exactly or approximately orthogonal to the roll axis.
Through this a regular row of bristles is formed, which is used for threading the lashes and thus serves as the starting point for the beginning rotary movement during the intended application. The lashes can thus assume their starting position in the bristle-free spaces between the bristles and are guided from this position through the other bristles of the bristle belt.
A “row of bristles” is composed of bristles that are located one behind the other in the longitudinal direction on the outside of the core. A bristle row always contains only one bristle of a bristle belt. The row of bristles is lined up along an imaginary line, which runs approximately and/or exactly parallel to the roll axis.
In addition, a cosmetic applicator is preferably designed in such a way that the tilt angle of the center axis of the respective swash plate increases in amount relative to the roll axis with decreasing distance to both the distal and the proximal end of the core. This angle increases towards both the distal and the proximal end.
It is also preferred that this increase in the angle of inclination in both directions is interrupted by a central separation disc, whose central axis is ideally parallel to the roll axis. The already mentioned at least one swash plate is the best choice, if its center axis is parallel to the roll axis of the core or if its center axis has a tilt angle to the roll axis of the core which is smaller than the tilt angle of all other center axes of the swash plates to the roll axis of the core. From this swash plate to the distal as well as to the proximal end the tilt angle of the center axes of the respective swash plate increases preferentially.
The arrangement of the swash plates in this way leads in turn to a better and more targeted separation of the lashes.
A further preferred design is that with increasing vertical distance of the bristle rows to the at least one bristle row, which is composed of bristles whose longitudinal axes are parallel to each other and/or in which the distance from the longitudinal axis of the bristle is approximately identical and/or whose longitudinal axes are orthogonal to the roll axis, the distance of the bristle tips of bristles lying on a bristle row increases or at least remains the same.
Thus, the bristles prefer to spread further and further apart the greater the vertical distance to the row, which is preferably used as the starting position for starting the intended application. In this way a better separation of the lashes can be achieved.
The “vertical distance” in the sense of the disclosure is the distance of the imaginary connecting line of a bristle row to a reference line, whereby the imaginary line of the bristle row is projected onto the vertical plane in which the roll axis lies.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates the 3D model of a first embodiment of the cosmetic applicator in side view.

FIG. 2 illustrates the 3D model of a first embodiment of the cosmetic applicator in top view.

FIG. 3 illustrates the 3D model of a first embodiment of the cosmetic applicator in perspective view.

FIG. 4 illustrates the 3D model of the first embodiment of cosmetic applicator in front view.

FIG. 5 illustrates an example and schematic representation of the belt lines and their course on a cosmetic applicator according to the invention.

FIG. 6 schematically illustrates the difference between a conventional cosmetic applicator and the cosmetic applicator according to the invention.

FIG. 7 illustrates further different embodiments of the cosmetic applicator with regard to additional bristles on the distal end of the cosmetic applicator.

FIG. 8 illustrates different embodiments of the cosmetic applicator in terms of different lengths.

FIG. 9 illustrates an embodiment of the cosmetic applicator with partially kinked bristles.

FIG. 10 illustrates another embodiment of the cosmetic applicator with partially kinked bristles.

DETAILED DESCRIPTION

First, FIG. 1 to FIG. 4 show a first embodiment of the cosmetic applicator in different views.
The cosmetic applicator 1 includes the bristle-bearing core 2 and the attachment shaft 3, which is used to connect a handle.
On the bristle-bearing core 2 there are several bristle belts 4. With several belts 4 it is meant to be more than 2 belts, ideally more than 3 belts 4, more ideally more than 4 belts 4, and even more ideally more than 5 belts 4. In this embodiment there are eleven different bristle belts 4 on the core 2. As an example, for all these bristle belts 4, one of them in FIG. 2 is marked with a black border and a reference sign. The bristle belts are composed of several bristles lying one behind the other, which are arranged around the circumference of the core.
Such a single bristle 5 is exemplarily provided with a reference sign. Between the individual bristle belts there are surrounding bristle-free spaces 6, also called “channels”, whereby here again only one of these spaces is exemplarily provided with a reference sign.
In addition to the classification of bristles lying side by side in bristle belts, a classification in bristle rows 13 is also possible. As an example, for the bristle rows of a cosmetic applicator, a bristle row 13 is additionally framed in black in FIG. 1 and marked with a reference sign.
The bristle-bearing core 2 of this embodiment is also characterized by a cambered version 7, which can be seen in the side view in FIG. 1 . The core then usually has a convex surface when viewed in the circumferential direction. Its diameter then becomes smaller in the area of its proximal and distal ends.
The bristle-bearing core 2 can also be divided into its proximal end 9 and its distal end 8. On its distal end 8 additional bristles can be attached, which are not arranged in bristle belts or bristle rows. These additional bristles are used to apply mascara pointly and to make individual eyelashes more easily accessible, for example for local separation, especially in the area of the inner corner of the eye.
FIG. 5 and FIG. 6 show exemplarily and schematically the course of the belt lines 10 of an embodiment of the cosmetic applicator, the comparison with belt lines of a conventional cosmetic applicator and the effect on the lashes when used as intended. While conventional cosmetic applicators only pull the lashes in a straight direction and force the lashes onto a narrow path, the cosmetic applicator according to the disclosure separates the lashes.
FIG. 6 shows the conventional cosmetic applicator on the left side and an embodiment of the cosmetic applicator according to the disclosure on the right side.
FIG. 7 shows further different embodiments of the cosmetic applicator with regard to additional bristles on the distal end 9 of the cosmetic applicator. Either no bristles can be present at the distal end, single bristles or a star-shaped bristle geometry 11. Both the single bristles and the star-shaped bristle geometry in turn serve to apply mascara pointwise and to better reach individual lashes, especially in the area of the inner corner of the eye.
FIG. 8 shows different embodiments of the cosmetic applicator with regard to different length variants. The smaller version is preferably used for Asian lashes. Due to the shorter, straight lashes and the shape of the eyes, smaller cosmetic applicators are required to avoid spreading the mascara too widely. In addition, the inventive applicator and in particular the smaller version thereof can also be used for application on eyebrows—to style them and bring them to a specific position, angle, shape.
It is preferred that the belt line 10 has an angle relative to the roll axis 14 that is different to about 90°. It can be preferred that at least a part of the bristle belt 4, in particular at least about 10% of the bristles belt 4, more preferably at least about 25%, even more preferably about 50%, even more preferably more than about 50% of the bristles belt 4, has an angle relative to the roll axis 14 that is different to about 90°.
FIG. 9 shows an embodiment of the cosmetic applicator with partially kinked or bent bristles 12 and also how the bristle rows and bristle belts can be arranged in a variant. Here, the kinked bristles 12 are mainly in an area where the belt lines have the smallest distance from each other, in order to still be able to show a good guiding behavior of the lashes.
In addition, the roll axis 14 of the cosmetics applicator is shown. The entire cosmetic applicator is rotated around this axis during proper use.
In addition, the courses of the belt line in this variant are clearly recognizable and named with explicit angles.
While the belt line with an angle of 0° throughout does not have a significant tolerance range, the other angles of belt lines do have a possible range. This range comprises preferably ±6°. Therefore, the angle of ideally 9° can also be in the range of 3°-15°. Accordingly, the ideally 18° angle can be in the range of 12°-24°, the ideally 27° angle can be in the range of 21°-33°, the ideally 36° angle can be in the range of 30°-42° and the ideally 45° angle can be in the range of 39°-51°.
The top row shown in FIG. 9 preferably has parallel longitudinal bristle axes, while the inclination of the bristle longitudinal axes on the underside, the cambered side, increases with increasing distance from the mid-belt line.
FIG. 10 shows an embodiment of the cosmetic applicator that is similar to the embodiment of the cosmetic applicator shown in FIG. 9 with differences that will be explained below. The embodiment of the cosmetic applicator shown in FIG. 10 (in particular similar to the embodiment shown in FIG. 9 ) comprises partially kinked or bent bristles 12. It is clearly visible in FIG. 10 how the bristle rows and bristle belts can be arranged in such an optional variant. Here, the kinked bristles 12 are mainly in an area where the belt lines have the smallest distance from each other, in order to still be able to show a good guiding behavior of the lashes.
In addition, the roll axis 14 of the cosmetics applicator is shown. The entire cosmetic applicator is rotated around this axis during proper use. Preferably the roll axis 14 lies, at least partially, preferably fully, inside the bristle-bearing core 2. The user turns the applicator 1 around the roll axis 14, in particular by turning the attachment shaft 3, or ideally by a handle that is attached to the attachment shaft 3. Therefore the roll axis 14 lies within the attachment shaft 3. Preferably the roll axis 14 also lies within the core 2. In this case, when the user rolls the applicator 1 around the roll axis 14, the applicator 1 itself makes a relatively small movement/rotation, while the arrangement of the bristles 5, i.e. the arrangement of the belt lines 10, makes the lashes pulled apart.
In addition, the courses of the belt line in this variant are clearly recognizable and named with explicit angles. One main difference of the embodiments of cosmetic applicators shown in FIGS. 9 and 10 is shown here. The courses of the belt line in the variant of FIG. 10 show an angle of about 0°, in particular the upper part of the belt line that lie above the roll axis 14. The courses of the belt line in the variant of FIG. 10 show an angle of about 5°, in particular the lower part of the belt line that lie below the roll axis 14. In a preferred embodiment, as shown in FIG. 10 , these angles, i.e. the about 0° angle for the courses of the belt line, in particular above the roll axis 14, and the about 5° angle for the courses of the belt line, in particular below the roll axis 14, do stay constant, in particular constant in the direction of the roll axis 14.
While the belt line with an angle of 0° throughout stays constant, in particular does not have a significant tolerance range, the other angles of belt lines do have a possible range. This range comprises preferably ±3°. Therefore, the angle of ideally 5° can also be in the range of 2°-8°. However, it can be preferable that all belt lines, in particular below and above the roll axis 14, throughout stay constant, in particular do not have a significant tolerance range.
The top row shown in FIG. 10 preferably has parallel longitudinal bristle axes, while the inclination of the bristle longitudinal axes on the underside, the cambered side, increases with increasing distance from the mid-belt line, in particular by adding the preferably mentioned 5° angles.
FIG. 10 further shows additional bristles on the distal end 9 of the cosmetic applicator. The bristles present at the distal end 9 are arranged on a plane that is flat. The normal of the flat plane has an angle to the roll axis 14. This angle can be in a range between about 25° and about 75°. This is contrary to the distal end shown in FIG. 9 , where the bristles present at the distal end 9 are arranged on a bended surface, in particular a convex bended surface, in particular a surface in the shape of a part of a sphere, bowl, ellipsoid, or the such.
It should be mentioned that all embodiments can be combined with each other, in summary or also single elements of single embodiments, without leaving the scope of disclosure of this application.
Some general remarks in regard to the question how to manufacture the applicator seem to be appropriate at this point.
It is one preferred embodiment of the invention that the applicator is obtained by an additive manufacturing process. The advantage of the additive manufacturing process is by far not only that it allows to obtain applicators with well-defined and complex architectures, compared to other methods like for example injection molding process.
Instead, a very specific advantage is that one can get can produce with properly elected 3D-printing procedures a surface texture—for example (seen by microscope) a surface texture like a crocodile skin—that shows improved wetting and/or storing properties. Examples of elected additive manufacturing process are Stereolithography (SLA), Selective Laser Sintering (SLS) and Digital Light Processing (DLP) process. The additive
For example Stereolithography (SLA) process which is based on light curing (photopolymerization) of liquid materials into a solid shape”.
Examples of resins potentially to be used for that purpose are polyolefin, polyamide, polyether, polyetherketone, polyphenylsulfone.
Preferred resins are thermoplastic-polyurethane, thermoplastic-elastomer, polypropylene or polyethylene, a photopolymer material or a resin comprising a photopolymer material.
These resins can provide at least one of the following properties to the applicator according to the present invention: flexibility, softness, recyclability, durability, light weight.

Claims

1. A cosmetic applicator comprising:

a bristle-bearing core including a bristle trimming, the bristle trimming comprising a plurality of bristle belts, each bristle belt of the plurality of bristle belts including a plurality of bristles arranged in succession along a belt line extending along a periphery of the core, with a completely bristle-free space between immediately adjacent belt lines of the plurality of bristle belts, a plurality of immediately adjacent belt lines of the plurality of bristle belts have a different course, such that lashes which lie in the bristle free spaces where the plurality of belt lines are closest to each other, are pulled apart in a direction of a roll axis of the core when the cosmetic applicator is rotated about the roll axis.

2. The cosmetic applicator according to claim 1, wherein an imaginary core cut surface, which includes a belt line along which bristles are arranged one behind the other, forms an imaginary swash plate which, when the core is rotated about the roll axis, performs a tumbling movement about the roll axis.

3. The cosmetic applicator according to claim 2, wherein the several plurality of belt lines along which bristles are arranged one behind the other form imaginary swash plates which are configured to tumble differently.

4. The cosmetic applicator according to claim 1, wherein the plurality of belt lines along which bristles are arranged one behind the other form a first group of immediately adjacent swash plates which are configured to wobble in a direction towards a distal end of the core upon rotation of the core about the roll axis, and a second group of immediately adjacent swash plates which are configured to wobble in a direction towards a proximal end of the core upon rotation of the core about the roll axis.

5. The cosmetic applicator according to claim 4, wherein the plurality of belt lines form at least one imaginary plate that separate the first and second groups of imaginary swash plates, the belt line of the at least one imaginary plate spans another swash plate having a central axis that is parallel to the roll axis of the core or that has a tilt angle with respect to the roll axis of the core which is smaller than a tilt angle of all central axes of the first and second groups of imaginary swash plates with respect to the roll axis of the core.

6. The cosmetic applicator according to claim 4, wherein the first and second groups of imaginary swash plates form a flat imaginary surface.

7. The cosmetic applicator according to claim 4, wherein the first and second groups of imaginary swash plates all or predominantly form a curved imaginary surface.

8. The cosmetic applicator according to claim 1, wherein the plurality of bristles predominately have a longitudinal axis that is completely straight.

9. The cosmetic applicator according to claim 1, wherein the plurality of bristles include bent bristles or kinked bristles in an area where the plurality of belt lines have a smallest distance between each other.

10. The cosmetic applicator according to claim 9, wherein a radially outermost third or a radially outermost quarter of the kinked bristles is bent.

11. The cosmetic applicator according to claim 1, wherein the bristle-beating core is of a cambered design such that an area of a vertical cross-section through the core decreases from a largest vertical cross-sectional area of the core towards both distal and proximal ends of the core.

12. The cosmetic applicator according to claim 1 characterized in that wherein the plurality of bristles predominately have a conical shape.

13. The cosmetic applicator according to claim 1, wherein the plurality of bristles form at least one bristle row which is composed of bristles each having a bristle longitudinal axis substantially parallel to each other bristle longitudinal axis or in which a distance between the bristle longitudinal axes of the bristles in the at least one bristle row is substantially identical or substantially orthogonal to the roll axis.

14. The cosmetic applicator according to claim 5, wherein the tilt angle of the central axis of a respective imaginary swash plate of the first and second groups of imaginary swash plates increases in amount relative to the roll axis with decreasing distance both towards a respective end of a distal and a proximal end of the core.

15. The cosmetic applicator according to claim 13, wherein the at least one bristle row is one bristle row of a plurality of bristle rows and with an increasing vertical distance of the plurality of bristle rows, which are composed of bristles whose having bristle longitudinal axes parallel to one another or in which a distance from the bristle longitudinal axis is substantially identical or the bristle longitudinal axes are orthogonal to the roll axis, a distance of the bristle tips of bristles lying on a respective bristle row increases or at least remains the same relative to one another.

16. The cosmetic applicator according to claim 2, wherein the plurality of bristles predominately have a longitudinal axis that is completely straight.

17. The cosmetic applicator according to claim 2, wherein the plurality of bristles include bent bristles or kinked bristles in an area where the plurality of belt lines have a smallest distance between each other.

18. The cosmetic applicator according to claim 2, wherein the bristle-bearing core is of a cambered design such that an area of a vertical cross-section through the core decreases from a largest vertical cross-sectional area of the core towards both distal and proximal ends of the core.

19. The cosmetic applicator according to claim 2 wherein the plurality of bristles predominately have a conical shape.

20. The cosmetic applicator according to claim 2, wherein the plurality of bristles form at least one bristle row which is composed of bristles each having a bristle longitudinal axis substantially parallel to each other bristle longitudinal axis or in which a distance between the bristle longitudinal axes of the bristles in the at least one bristle row is substantially identical or substantially orthogonal to the roll axis.