EP3174432A1

EP3174432A1 - Applicator with bristles of particle-filled plastic

Info

Publication number: EP3174432A1
Application number: EP15747443.8A
Authority: EP
Inventors: Wolfgang KAMM
Original assignee: Geka GmbH
Current assignee: Geka GmbH
Priority date: 2014-07-31
Filing date: 2015-07-31
Publication date: 2017-06-07
Also published as: US11547202B2; WO2016016436A1; US20170215565A1; US20170311706A1; US10610007B2; WO2016016440A1; EP3174434A1; US20200196743A1; WO2016016433A1; EP3174433A1; US10499725B2; BR112017001244A2; US20170231377A1; EP3174434B1; BR112017001129A2; EP3174433B1; BR112017001131A2

Abstract

In the case of a mascara brush (18) with a core comprising at least two sections of wire (12, 13) twisted together along a wire core longitudinal axis (LD) and a set of bristles (26) comprising bristles (1, 1a-1f) of plastic formed by filaments (1'), which are respectively held clamped between the two sections of wire (12, 13) and are formed at their free ends with a wedge-shaped bristle tip or without a wedge-shaped bristle tip, it is intended to offer a solution that provides an increased storage capacity for the mascara composition to be applied with at the same time improved delivery of stored mascara composition to the lashes. This is achieved by the bristles (1, 1a-1f) being formed from a plastics material extruded into a fibre, to which outwardly protruding particles (19) are added and/or which is provided with punctiform depressions (indentations), which roughen the bristle surface (20), wherein the bristles (1a, 1c, 1d, 1e, 1f) that have a wedge-shaped bristle tip at their free ends comprise at least one cut surface (4) that forms a wedge and the surface roughness (Rz) of which lies between 0.2 µm and 6.3 µm, in particular between 2.9 µm and 6.3 µm.

Description

Applicator with bristles made of particle-filled plastic

The invention is directed to a mascara brush with a core of at least two along a wire core longitudinal axis twisted wire sections and a

Borstenbesatz made of filaments bristles

Plastic, each held clamped between the two wire sections and which are formed at their free ends with a wedge-shaped or without a wedge-shaped bristle tip.

Such applicators are also referred to as wire core applicators. These applicators are enjoying higher today

Appreciation, because they not only have application advantages, but also have different manufacturing advantages, which are in conflict with the ones that are sprayed with them

Do not reach applicators. So z. As well as small series can be made quite effective, since on the existing manufacturing equipment usually very

Different wire core applicators can be produced without having to invest significant sums in new tools for a particular applicator, unlike injection molded applicators.

In general, wire core applicators also have to meet two requirements in particular: their bristle stocking should be as high as possible

Have mass storage capacity so that the applicator only once or only a few times must be immersed in the cosmetics stock to wrap the eyelashes with a sufficiently voluminous layer of mascara. On the other hand, their bristle trim should be as good as possible

Have separation ability, d. H. the ability to separate obliquely superimposed eyelashes of the eyelash arc from each other and to align substantially parallel. This is not least because the eyelashes can only be given the desired volume through the mascara mass if they are individually coated all around and are not previously soaked in a tufted manner with mascara mass. In general, therefore, applies to wire core applicators that they must meet in particular high demands on the mass storage capacity with respect to the substance to be applied with them. In the present case, however, it is not just about increasing the mass storage capacity to such an extent that the applicator does not have to be submerged and reloaded too often when applying mascara. It is also primarily a matter of making sure that an eyelash in a job order wetted as intensively as possible with mascara, in order to make the eyelashes appear as voluminous from the start immediately - without having to coat the eyelashes several times and to risk that the separation suffers and adjacent eyelashes due to the multiple mascara order at some point stick together.

The starting point for achieving this is to use the

To provide a mascara applicator with bristles, which, each by itself, after immersion in the mascara, one

wear the thickest possible film of mascara.

It has already been proposed in the prior art by the patent US 6 311 359 how to create bristles for paintbrushes and painters brushes for wall and ceiling painting which, each for themselves, a thickest possible color film can carry. For this purpose, the plastic material before the

Extruding the filament or fiber from which the filaments are cut, which later form the bristles, particles (usually inorganic nature) are added, which roughen the surface of the filaments, which are later used as bristles, as the particles in each case on the they protrude immediately surrounding surface. Such bristles can be used instead of paintbrushes and

Also use painters brushes for mascara applicators.

However, in the practical implementation it turns out that these special bristles, which when used in

Paintbrushes the respective brush a superior

To impart order behavior when installed in

Mascara applicators do not bring too great improvements.

The reason for this is likely in the different

In addition, stocking density to be sought and, more importantly, the fact that the return of the color

inducing mechanism with a paintbrush or a painter brush is completely different than one

Mascara applicator. A paintbrush or paint brush is pressed with some force against the surface to be coated with the paint, which triggers the release of adhering to the bristles, usually quite thin liquid color.

This is different with a mascara applicator. The bristles are not pressed here under force against the eyelashes, but rather slide the eyelashes into the spaces between the bristles and touch here in the

Bristles only. Because of this, it is clear why the bristles roughened by the addition of the particulate matter and therefore endowed with better mass storage capacity can not, when used in a mascara applicator, produce those superior effects which they do

Paintbrushes and painters.

In DE 102 32 589 AI is to improve the

Kämmergebnisses a mascara brush and thus the

Mascara order has been proposed, the bristle tips tapered in cross-section form wedge-shaped.

The invention has for its object to provide a solution that increased in a mascara brush

Mass storage capacity for the mascara mass to be applied at the same time improved delivery of stored

Mascara mass on the eyelashes provides.

In a mascara brush of the type described in more detail above, this object is achieved in that the bristles extruded from a fiber to a

Plastic material are formed, the outward

protruding particles are added and / or which is equipped with punctate depressions (indentations) roughening the bristle surface, the bristles having at their free ends a wedge-shaped bristle tip at least one wedge-forming leading surface (4) whose surface roughness (Rz) between 0.2 ym and 6.3 ym, especially between 2.9 ym and 6.3 ym.

The surface roughness Rz, which is also called the roughness, must be determined in accordance with DIN EN ISO 4287/4288.

Due to the addition of particles or the formation of punctate depressions or indentations in the outer surface of a _r

5

Bristle, and in particular comb-improving wedge-shaped gate surfaces having the indicated roughness Rz between 0.2 and 6.3 ym, in particular between 2.9 ym and 6.3 ym, becomes the mascara capacity of each and in particular of each wedge obliquely cut improved. It is particularly advantageous that the oblique bleed surfaces due to the

Roughness according to the invention a good Mascaraaufnahmevermögen and thus a correspondingly good Mascaraabgabevermögen to the first during the combing process

possess along sliding eyelash hairs. The bleed surfaces are of particular importance in that the eyelashes in the make-up process at the beginning of the make-up movement are first guided along this surface and slide along.

In an embodiment, the invention provides that the

Surface roughness (Rz) is made by grinding the bristle ends by means of a grinding wheel. By grinding, the first after the extrusion

at least partially exposed under a thin plastic skin particles and thereby become the

Roughness and, consequently, the mass absorption and

Mass storage capacity for mascara mass improved.

In particular, by appropriate selection of the roughness of the grinding wheel (s) used during grinding the

desired roughness of the sloping gate surface influenced and fixed.

In this way it is also possible the roughness of

Forming gate surfaces such that the

Surface roughness (Rz) of the respective gate surface is greater than that of the outwardly projecting particles and / 0dr punctate depressions (indentations) having undisturbed Borstenschaftoberfläche what the invention also provides in development. The above object is thus achieved with a mascara brush with a core of at least two wire sections twisted together and a bristle set of bristles formed by filaments. The filaments are held clamped between the two wire sections. The brush according to the invention is characterized in that the bristles consist of a plastic material to which particles are added which give the bristle surface an increased surface roughness, preferably measured as Rz, compared to the surface roughness extruded from the same material but without added particles

Bristle has. The special feature of the

The brush according to the invention is characterized in that its bristle-covered bristles carry at their free end a wedge-shaped tip instead of a substantially perpendicular to the

Borstenlängsachse extending end face.

It is therefore useful according to a further embodiment of the invention that the entirety of bristles for the most part a wedge-shaped tip with at least one

Has bleed surface.

Advantageously, then, a part of the bristles has a wedge-shaped tip formed by an oblique section with a gate surface, which the invention also provides.

As will be explained in more detail later, it allows the at least one wedge surface with which a bristle

According to the invention can be equipped to push the bristle between the eyelashes at the beginning of the application so that the respective eyelash better in contact with the bristle remains even after the slipping of the eyelash from the wedge surface forming gate surface in the region of the bristle shaft , This allows the respective Borstenschaft and the bleed surfaces, which due to their increased roughness a thicker film of mascara

keep stored more of this mascara to the

Give an eyelash. Thus, a better coating of the eyelash. That comes not least to the achievable

Eyelash volume to good.

Preferably, the wedge-shaped tip of the respective

Bristle formed by a slanted cut in the manner of a simple wedge, leaving a first side of the relevant

Bristle has a maximum longitudinal extent (LMAX) and the diametrically opposite second side has a minimum longitudinal extent (L _M IN). As a result, it is possible to produce a wedge surface which drops off in a flat manner with respect to the longitudinal axis of the bristle and which favors the effect to be used according to the invention.

For other applications, the wedge-shaped tip can be formed by a Doppelschräganschnitt consisting of two converging surfaces that intersect at the free end of the bristle, at least in their imaginary extension. In this way, the bristle in question can act on both sides and so two eyelashes

influence, which have created from different sides against the bristle. The invention is characterized in

Design therefore also characterized in that a part of bristles has a wedge-shaped tip formed by a Doppelschräganschnitt, the two converging

Includes bleed surfaces that are imaginary or imaginary

Extensions intersect at or near the free end of a respective bristle. Such a bristle can displace eyelashes on both sides and thus separate. Unlike a bristle which is simply cut off at an angle, such a bristle does not show any disturbing

Preferred direction. It is particularly favorable when the bleed surfaces in

Are essentially in themselves. Ideally, two leading surfaces opposite the same bristle end are substantially the same size.

The bristles may be aligned such that one or both of the leading edge opposite to a bristle tip (s) are arranged transversely to the wire core longitudinal axis, in which case in particular the bristles, which are equipped with only a one-sided gate surface, so

arranged and aligned that part of the

respective bleed areas with registration to the

Borstenbesatz bearing brush tip and a part of the opposite brush end is aligned. The invention is characterized in another embodiment, therefore, characterized in that the gate surfaces are aligned transversely, in particular perpendicular, to the wire core longitudinal axis (LD). It is advantageous here, if the

Parting surfaces of the bristles with a gate surface partially towards the brush end and partially to

Brush tip are aligned. In the context of this

According to a preferred embodiment, it is provided that the gate surface formed by the oblique section is aligned so that when, along the

Wire core longitudinal axis (ie in a view from the front on the free end of the wire core or a view from the front on the intended for attachment to the stem free end of the wire

Wire core), looks frontally on the gate area, while one does not look at the gate area when looking in the circumferential direction. This is preferably true for all bristles of the stocking.

A mascara brush may have a plurality of differently formed bristle types at its bristle tip. ,

y

For example, a bristle stock in its entirety may comprise bristles having a non-pointed and non-wedge shaped tip and bristles having a wedge shape

formed bristle tip and bristles having a wedge-shaped, but only one side only one having two opposing leading surfaces

Anfangflache having bristle tip, wherein the

Gating surfaces in different directions, once towards the bristle end and once aligned to the bristle tip, have. It is therefore particularly useful if the individual types of bristles systematically bristle

arranged and assigned to each areas, zones or sectors of the bristle trim. The invention is characterized in further development therefore further characterized in that the

Borstenbesatz several areas, sectors or zones, in the circumferential direction of the bristle trim transverse, in particular perpendicular to the wire core longitudinal axis (LD) or in

Circumferential direction of the bristle trim spiral to

Wire core longitudinal axis (LD) or in the longitudinal direction of

Borstenbesatzes longitudinally, in particular parallel, to

Wire core longitudinal axis (LD) are aligned, and the at least one of a plurality of each other

adjacent and each a similar trained

Bristle having bristles existing bristle row or are formed by such a row of bristles, and each adjacent in the circumferential direction and / or in the longitudinal direction of the bristle trim adjacent to one or more

Bristles comprehensive area or sector or zone are arranged, whose / their bristles have a contrast formed differently bristle tip.

In this case, however, it is also possible for the bristle facing to have a plurality of regions, sectors or zones which are located in

Circumferential direction of the bristle trim transverse, in particular perpendicular, to the wire core longitudinal axis (LD) or in

Circumferential direction of the bristle trim spiral to ₁

Wire core longitudinal axis (LD) or in the longitudinal direction of

Borstenbesatzes longitudinally, in particular parallel, to

adjacent bristles comprise existing bristle row, the adjacent bristles each one different

have trained bristle tip.

Overall, therefore, for example, of the four types of bristles described above or the six described in this application, all four or six types of bristles may each be arranged individually adjacent to each other alternately in a region or zone or sector, thereby forming an area or zone or sector , However, it is also possible for only one bristle type to be arranged in an area or a zone or a sector, and then alternately one area or one zone or one sector, each with a different bristle type, follow one another in the circumferential direction of the bristle facing. Preferably, an area or zone or sector comprises at least two bristles. There are

Of course, all possible combinations of bristle types and areas, zones and sectors possible.

For example, not all four of the above or all six types of bristles described in general must be present in each zone or area or sector or, in principle, present in a bristle stocking.

The extension of a zone, an area or a

Sector can be different. In a further advantageous embodiment, the invention therefore provides that the

a plurality of regions, sectors or zones in the circumferential direction transversely or longitudinally to the wire core longitudinal axis (LD) once the

Cover the circumference or part of the circumference of the bristle trim. In principle, it may be that an area or a zone or a sector covers an angular distance, the 1/8 to 1/64 of the circumference or the enveloping circle of the bristle trim and thus an angular extent between 5, 6 ° and

45 ° by weight.

With respect to the respective bristles equipped with a chamfered chamfer surface, it may be desirable to alternately align an area or a sector or zone at which the chamfer surfaces of all the bristles are pointing towards the brush tip, and an area or a sector or a zone , at

which / which the leading surfaces of all bristles in

Oriented towards the brush end,

provided. This can be done, for example

manufacture, in a first step, the bristle facing for producing the gate surfaces with a grinding wheel from the brush tip parallel and longitudinal to

Threaded wire core longitudinal axis to the brush end, then the bristle trim or the mascara brush for example, 1/8

Rotation, which corresponds to a 45 ° - rotation is rotated, and then the grinding wheel is then moved in the opposite direction to the previous step in a second step from the brush end in parallel and along the wire core longitudinal axis to the brush tip. This sequence of steps is carried out until the 360 ° circumference of the bristle stock has once been completely driven by the grinding wheel and swept over.

It may also be advantageous if the bristle stocking consists of bristles or filaments with wedge-shaped sharpening and of other bristles or filaments without

wedge-shaped sharpening, wherein the bristle facing is preferably designed so that the bristles or

Filaments with wedge-shaped sharpening form one or more sector (s) of Borsteinsatzes and the other bristles or filaments form one or more further sector (s), wherein the sector (s) and / or the further sector (s) preferably and ideally in

Circumferential follow one another alternately, which the invention also provides in an embodiment.

It is expedient according to a further embodiment of the invention that between 1 to 8 sectors and between 1 to 8 other sectors are present.

In this case, it may also be advantageous that the bristles or filaments with wedge-shaped sharpening in the otherwise of other bristles or filaments

Borstenbesatz are arranged so that they form a spiral running on the peripheral surface of the bristle facing path, which the invention also provides.

Expediently, it may also be the case that the further bristles or filaments consist of the same material as the bristles or filaments with wedge-shaped sharpening.

It is also advantageous in this case that the chisel surfaces of the bristles or filaments with wedge-shaped sharpening, at

Neglecting their wedge angle, are aligned perpendicular to the course of the imaginary longitudinal axis of the spiral path.

It is particularly expedient if the angle (), by which the chamfering surface (s) formed by the oblique incision or by the double oblique incision is inclined with respect to the longitudinal axis of the bristle, satisfies the relation of -S 55 ° and ideally even -S 35 °. This results in a particularly long, well usable, because only flat against the

Bristle longitudinal axis sloping gate area. The ideal is the observance of the relationship -S 20 ° proved. ₁

Preferably, this is accompanied by a so-called. Doppelanschliff, d. H. one and the same bleed area is sanded a first and then, in a separate operation, a second time, whereby such a steep angle can be achieved. The invention is therefore further distinguished by the fact that for the angle at which the gate surface or surfaces formed by the oblique or double oblique section are inclined with respect to the longitudinal axis of the bristle, the relationship of S 55 °, preferably S 35 °, in particular S 20 °, is.

The filaments forming the bristles may have a non-circular cross section and preferably a polygonal or a square cross section.

Surprisingly, it has proven to be particularly favorable

pointed out, the bristles or filaments tubular, inside hollow form, preferably along its entire length (before twisting). This results in a particularly favorable, synergistic effect, especially when the oblique incision is made by grinding the bristles. If the bristle is hollow inside, it can store with its cavity mascara mass, which is released in the course of the application through the mouth of the cavity to the outside, which lies in the middle of the center of the gate area. Thus, the eyelashes are already pre-coated as they slide along the gate surface, further improving overall mascara coverage. An essential point here is that the oblique section or the resulting wedge surface the mouth of the

Hollow bristle can be significantly larger and thus creates a larger area in the Mascara mass can be stored so that it is immediately available for dispensing during application and that on the larger orifice surface also slightly deeper inside the bristles

stored mascara mass are released more easily can. In addition, the incision area of the bristles formed by the oblique incision forms a large support area, which the individual eyelashes can slide along for a considerable time before slipping off the front side of the bristle and settling between adjacent bristles. Meanwhile, the eyelash has ample opportunity to be wetted with mascara mass. On a small area, essentially perpendicular to

Borstenlängsachse extending end face of a hollow bristle, the individual eyelash can only much shorter

linger before slipping off into the bristle spaces.

The invention therefore also provides, in a further embodiment, for the bristles or filaments to be tubular and hollow on the inside and slit continuously in the direction along their longitudinal axis. It is advantageous to design the bristles or filaments slit continuously in the direction along their longitudinal axis. The bristles or filaments become somewhat unstable in this way, or their

Stability can be better controlled so that the bristles deform more strongly during application in such a way that mascara mass stored in its cavity is dispensed over its mouth in the region of the oblique section.

Preferably, the outer diameter is circular

executed bristles 1> 115 μιη and even better> 215 μιη. In the vast majority of cases, the

Outer diameter of the circular bristles 1 <320 μιη used in the invention. The invention is therefore also characterized by the fact that the

Outer diameter circular trained bristles> 115 μιτι, preferably ^ 215 μιτι, and -S 320 μιη is.

Where the bristles are non-circular, holds that the

Outer enveloping circle of non-circular cross-section running bristles has a Hüllkreisdurchmesser which is ^ 100 μιη and better still> 200 μιη. In the vast majority , _r

15

Number of cases is the outside enveloping circle of the invention used in cross-section non-circular

running bristles <340 μιη and even better <320 μιη. Finally, the invention is also distinguished by the fact that the outside enveloping circle of non-circular bristles has an enveloping circle diameter which is> 100 μιτι, preferably μ 200 μιτι, and -S 340 μιη, in particular -S 320 μιη. The envelope circle here is to be understood that circle in which the respective cross section of the bristle can be inscribed in the best possible way.

Both the outer diameter of the bristles and the

Envelope circle diameter -S 340 μιτι, in particular -S 320 μιτι, formed because the bristles are otherwise so coarse that their ability to separate the eyelashes, too far

is restricted.

Where the bristles are hollow, the perpendicular to the

Outside surface measured wall thickness of the bristles used 1 between 15 μιη and 100 μιη amount. The wall thickness of the bristles or their bristle jacket, the cavity in the

Inside the bristle bounded, is in each case chosen so that the hollow bristle under the influence of the typically occurring forces in the application sufficiently strong

Deformations learns to push the mass stored in their interior to the outside.

It has proved to be particularly favorable when the corners of the radially outward bristle tips are rounded.

Alternatively, but not preferred, or in addition, the mass-absorbing capacity-improving effect can also be achieved by so-called indentations, ie punctiform depressions, instead of particles projecting locally over the surface, ie by a plurality of localized depressions in the , _r

16

Bristle surface, which (seen microscopically or greatly enlarged) profile the bristle surface in the manner of a crispbread and thereby make it more receptive.

Advantageously, the number of indentations or points distributed over a respective bristle is

Depressions or impressions more than 200.

Further optimization requirement can exist in particular if the wire core applicator is particularly dense

Bristle facing shows. It is then clear from the principle that the separation of the bristles can be further increased by the fact that the bristles are made of a hard as possible material, which bristle of the same diameter a higher stiffness or

Knickfestigkeit confers and therefore causes two positive effects. A stiff bristle can penetrate better between superimposed eyelashes of the eyelashes. A stiff bristle also has a much lower tendency to dodge the grinding wheel and therefore offers the possibility of a sharper tip finish than a softer bristle. When trying hard materials and

In particular, to use hard plastic materials, however, there is the problem that when grinding the quality of the outer edge of the ground surface can be reduced. There may be the problem that the edge no longer forms a clean, continuous line, but may show a jagged contour, which may hinder the lashes from sliding along the edge. To avoid this, it can be provided that the bristles of two different plastics consist of a bristle jacket of a first, softer material and one with the bristle jacket

having bonded bristle core of a second, harder material.

Since for the most efficient possible separation of eyelashes as hard as possible and at the same time slim bristles advantage If it were close by, it would have been the coat of filament or the coat of bristles made of the harder material

and not the core. This is because, as is known, the radially outward regions of a cylinder contribute many times more to the flexural rigidity than the central or core region of a cylinder located near the neutral fiber. However, it has been shown that the core gives the filament or the bristles formed by the filament a greater flexural rigidity, and even then just when the bristle ends are amply ground and thereby lose the predominant part of their original shell in the polished section. The also at

Grinding to a good part of permanent hard core simplifies the as flat as possible sharpening of the free

Bristle ends by grinding the same, because it prevents the bristles of the grinding wheel can dodge too easily and therefore not intense enough to come into contact with the grinding wheel to be sanded efficiently and above all over a considerable length. Thus, it makes the described embodiment of the bristles

much easier to provide the respective bristle end with the lowest possible wedge angle and at least as long as possible wedge surface.

On the other hand, the soft mantle supported by the hard core behaves very good-natured when sanding and surprisingly forms a well-defined outer edge, free of fraying and / or breakouts, d. H.

Irregularities in which the individual eyelashes could get caught in the eyelashes when penetrating the sharpened bristle end, which negatively affects the separation result

could influence.

It can be advantageous if the majority of the filaments or bristles of the bristle facing consists of such a material mix and structure. So z. B. under the , ₀

1 o

For example, the filaments forming the bristle stocking or brushing stock also have a certain number of filaments, often forming a minority, e.g. As thinner filaments are, each consisting only of a single material. Preferably, these are filaments consisting entirely of the softer material also used for the ground filaments.

It can be provided that at least 75% of all filaments and ideally even all for a Mascaraapplikator for

Use existing filaments consist of the claimed material mix.

The first and preferably also the second material may be a plastic, ideally a thermoplastic

Plastic.

The two plastics can be solidified by coextrusion

be connected to each other and the filaments can

Pieces of an endlessly coextruded thread or several endlessly coextruded threads. The coextrusion is then not just any arbitrary, interchangeable process, but imprints the endless thread and thus also the filaments cut out of it and the bristles formed therefrom on its special microstructure. This microstructure is characterized on the one hand by the fact that the two different plastic materials are particularly intimately glued together or welded or fused and on the other hand, that their

Plastic molecule chains have a significant orientation in the direction of the longitudinal axis, the later

Borsten longitudinal axis forms.

It is preferable that as the second material, one having a Young's modulus (Young's modulus) of at least 1300 N / mm ² _n owns. It is significantly better if the second material has at least one modulus of elasticity of> 1700 N / mm ² . For most applications, it is advisable that the modulus of elasticity of the second material does not exceed 2700 N / mm ² .

It may be favorable to install polyamide 6.12 as the first material in the bristle core. In this case, the first material has a Shore D hardness -S 80. The method for measuring the Shore hardness D is standardized; the relevant standards are the DIN EN ISO 868 and DIN ISO 7619-1 standards.

In one of two different, the above

Characteristics having coextruded filament coextruded filaments or coextruded bristles also has the advantage that when grinding the gate surfaces with one and the same grinding wheel different roughness in said surface roughness on the shell and the

Core component of the coextruded bristles result due to the different E-modules, but these

different roughness depths continue to fulfill the two most important functions of a bristle, namely the separation and combing of the eyelashes and the simultaneous wetting of the eyelashes during an application movement. Other modes of action, benefits and

Design options are the following

Description of some embodiments with reference to the figures. The invention is explained in more detail below by way of example with reference to a drawing. This shows in

Fig. 1 is an inventively designed bristle in

Top view of her (simple) oblique section, Fig. 2, the bristle gem. 1 in side view, Fig. 3, the bristle gem. Fig. 2 shortly after

Penetrating the eyelashes, Fig. 4, the bristle gem. 2 shortly before the eyelash reaches the bristle trunk from the gate surface,

Fig. 5 shows a second embodiment of a bristle, the bristle tip of a

Double slant has,

6 shows a third embodiment of a bristle, which is hollow and provided with a longitudinal slot,

Fig. 7 is a perpendicular to the bristle longitudinal axis

executed sectional view in the region of the bristle shaft below the oblique section in the embodiment according to. 6,

Fig. 8 shows an alternative embodiment of a

Oblique section,

Fig. 9 is an invention equipped

mascara brush,

Fig. 10 in a partial section of a cross section

through the bristle facing in the direction of the brush tip a bristle arrangement with alternately pointed and not

pointed bristles,

FIG. 11 shows a detail enlargement from FIG. 10 and FIG. 12 shows a detail of that shown in FIGS. 10 and 11 bristle variant seen frontally seen from the front.

The illustrated in Fig. 9 with its front, the brush tip 15 comprehensive range, with a total of 18

designated mascara brush is produced by the fact that between at least one wire clamp 11 with two straight wire sections 12, 13, a plurality of initially mostly straight filaments 1 ^{λ is} inserted. As filament l ^x in the context of the invention is preferably referred to a section of an endlessly extruded fiber. The filaments 1 ^λ are usually between the wire sections 12, 13 of the

Wire clip 11 inserted that they both sides of the

Wire clip 11 and its wire sections 12, 13 in

Essentially (preferably a maximum of +/- 10%) the same distance

stand out.

The wire sections 12, 13 are then twisted together, whereby the filaments 1 ^λ distribute and finally firmly between the wire sections 12, 13 are clamped.

Each filament 1 ^λ then ^usually forms two bristles 1. In that regard, in the context of this description, only "different sides of the same coin"

when the term "filament" is used and another time the term "bristle" is used.

After twisting, the brush contour, i. the cladding surrounding the bristle trim 26 of the mascara brush 18, with a cutter and counter knife, while the brush 18 rotates, cut so that the plurality of radially

projecting bristles 1 correspond exactly to drawing a given brush body. Then, in a next step, the beveling of the bristles according to the invention,

especially by grinding. Figs. 1 and 2 show the details of a

Embodiment of an obliquely cut bristle la, lc. One can recognize the particles 19 which have been added to the plastic mass which is extruded into the thread or fiber from which the filaments 1 ^λ forming the bristles 1, 1a, 1c are cut. Which particles 19 can be used and how the preparation of a corresponding plastic mass works, from which then, later to filaments 1 ^{λ cut to} size threads can be extruded, is described in US Patent US 6,311,359, the disclosure content by reference to the subject of this Registration is made. Especially for the there as a suitable material for the production of the particles

Substances described also claimed protection in the context of this application.

The particles 19 are in the near-surface region only

partially embedded in the filament 1 ^λ forming plastic matrix and partially protrude outward beyond the surface 20 surrounding it. So you create a significantly increased surface roughness. The surface 20 is more wettable for the mascara, in the broadest sense.

As a result of the increased roughness in this way, the mascara mass has much better hold on the surface 20 of the bristle shaft 2, so that after stripping off

thicker film mascara on the surface 20 of the

Borstenschafts 2 sticks as on the almost completely smooth surface of the bristle of a bristle, which was extruded from a plastic mass to which no particles have been added. ₂

As can be seen well, the bristle 1, la, lc has at its free end an oblique section 3, which here forms a gate surface 4, which forms a wedge, which will be discussed later in detail.

In such an oblique section 3, the gate surface 4 is preferably aligned so that, when looking along the wire core longitudinal axis LD, frontally on the

Bleed surface 4 looks, as shown in Fig. 1, while not or not appreciably on the

Bleed surface 4 looks when looking in the circumferential direction, as shown in Fig. 2. In this case, however, it is so that a part of the gate surfaces 4 in the direction of the brush tip 15 out, namely in the bristles lc

trained bleed surfaces 4, and part of the

Gating surfaces 4 towards the brush end 16, namely, the formed in the bristles la gate surfaces 4, are arranged aligned. The crucial point for the invention is the surprising synergistic interaction between the wedge formed by the oblique section 3 and the

Borstenschaft 2, which due to their increased roughness can store a particularly thick film of mascara.

The effect achieved by the invention, insofar as it is so far comprehensible in detail, can best be explained with reference to FIG. 3. The inventively occupied with the bristles 1, la - lf

Applicator, ie, the mascara brush 18, is usually brought to the eyelash arc in such a way that the bristles 1, 1 a - 1 f are moved in a direction which is approximately perpendicular to the "longitudinal axes" of the eyelashes W, see FIG. where the direction in which the bristle 1, la - lf moves approximately, is illustrated by a first, vertical arrow 21. The oblique section 3 forms with the remaining material in the obliquely cut bristles la, lc - lf a kind of "wedge", which pushes between adjacent eyelashes and in any case the eyelash W, which comes to rest on the 4 formed by the inclined section 3 leading surface , the deeper the "wedge" is inserted between the eyelashes. The direction in which the eyelash W is pushed aside is shown in FIG. 3 by a second,

horizontal arrow 22 illustrates.

The eyelash W opposes the Beiseitegedrängtwerden increasing resistance by tending to their

original situation tried to spring back to. Thus she puts herself with a certain "bias" against the

Bleed 4 on, creating a permanent contact

between the eyelash W and the gate 4

is ensured. The decisive point now is that, although not in all, but in many cases the said "bias" between the eyelash W and the bristle 1, la, lc - lf remains beyond the moment in which the eyelash W the inward End 23 of the gate surface 4 has reached and now the surface 20 of the bristle shaft 2 deeper into the space between the bristles of the bristle trim

slips in, cf. Thus, the eyelash W does not detach from the bristle 1, which has pushed it aside, more or less "freely" into the space between adjacent ones

Instead, it slides on along the bristle shaft 2, where due to its increased roughness a thicker mascara film adheres to the eyelash W in the course of her

Borstenschaft 2 Sliding particularly well with the

Coated with mascara. By this surprisingly simple measure, the previously existing problem is solved that the bristle known from the paintbrush forth with its increased surface roughness, even when used as a bristle for a Mascaraapplikator a significantly higher storage capacity, but the stored mass can only give off poorly, because the bristle trim on a mascara applicator or a

Mascara brush 18, unlike a paintbrush, not at the place where the paint is to be applied,

"Squeezed out" is.

After demonstrating the principle of action, which is to make the invention usable, is now on the

Details of the bristle design to enter.

In the illustrated in FIGS. 1 and 2

Embodiment, the bristle 1, la, lc has a circular cross-section. At its radially outward, distal to the wire core longitudinal axis free end of the bristle 1, la, lc has a sloping section 3 in the manner of a simple wedge. This means that a first side of the relevant bristle 1, la, lc, seen in the direction along the longitudinal axis of the bristle L, has a maximum longitudinal extent LMAX and the diametrically opposite second side has a minimum length extension L _M IN. One side or a strip of the surface 20 of the bristle 1, la, lc is thus longer than the diametrically opposite side or a diametrically opposite strip of the surface 20, cf. Fig. 2.

In each case, the bristle 1, la, lc not only "a little" obliquely cut, but shows a clearly visible oblique section 3. Preferably applies to the angle by which the oblique section 3 formed

Bleed surface 4 with respect to the bristle longitudinal axis L inclined _R

26

is, the relationship -S 55 ° and ideally even -S 35 °. In this way it is ensured that the

Bleed 4 is large enough to achieve the effect intended by the invention, cf. again Fig. 2.

Especially by Doppelanschliff, as already above

explained, in which, as shown in Fig. 5, two oppositely formed to each other leading surfaces 4 arise, and bristles 1, ld can be made with -S 20 °.

Not least in this way results in a very pronounced gating surface 4, which is preferably so long that it extends at least over 1/10, or even better, over at least 1/6 of the total length of a bristle 1. In other words, it can be said that for many

Use cases is particularly favorable to comply with the following relationship:

LMAX - LMIN + ^ -fold filament diameter or

Boron diameter 9, D to L _M IN + 2-fold

Filament diameter or bristle diameter 9, D. With the said, additional bevel can be increased even up to LMAX - L _M IN + 4-fold filament diameter or

Borstendurchmesser 9, D - as, as can be seen in the extent not drawn to scale extent 2 based on the there dimensioned gate surface length AFL.

In this way it is ensured that the

respective gate area 4 is large enough to achieve the effect intended by the invention.

The effect used by the invention for improving the contact between the eyelashes and the respective bristle shaft 2, however, can not be achieved only with the aid of a simple oblique section 3, even if such is due to its particularly long wedge surface is preferred.

At least in the less problematic cases, a double oblique incision 3 * can also be used, as shown in FIG. 5. Such a Doppelschräganschnitt 3 * is formed of two converging leading surfaces 4, or whose imaginary extensions intersect at the free end of the bristle 1, ld and there a kind of "chisel edge" 4a

train, d. H. As a rule, essentially form - except for tolerance deviations - straight edge 24, which represents the outer end of the bristle ld. Such a

Double bevel cut 3 * thus gives the free end of a bristle 1, 1d a chisel or roof-like appearance. Otherwise, such a bristle ld corresponds physically and in its mode of operation to the embodiment described by FIGS. 1 and 2, so that what is said there also applies to the exemplary embodiment according to FIG. 5. This is especially true for the angle by which the two gate surfaces 4 are inclined relative to the bristle longitudinal axis L.

It should also be noted that Figs. 1 and 2 show an optional embodiment, the gate surface 4 in

Essentially plan, d. H. is in itself. Another embodiment which may be preferred for certain applications is illustrated in FIG. 8, which also shows a bristle lf made of two different plastic materials. The gate surface 4 of this bristle lf is convexly curved approximately in the manner of a pocket watch glass in two mutually perpendicular directions. Experiments have surprisingly revealed that such a convex

Curvature significantly improves the delivery of the stored mascara mass and the wetting of the passing eyelashes. , ₀

2 ö

For the sake of clarification, the terms "oblique cut" or "double oblique cut" in the sense of the invention are not to be understood as meaning that the wedge surface (s) are cut by a cutting operation, ie by a cutting operation. H. Instead, each wedge surface may have been created by a corresponding sanding of the bristle end, which is even the preferred method of production

Doppelschräganschnitt 3 * by grinding ago, then this leads to the embedded in the plastic mass particles 19 are freed from their existing after extrusion, outer thin plastic shell in the area of the gate surfaces 4 and possibly also pulled out of the plastic mass, so that punctual recesses or indentations arise. This means that the respective gate surface 4 itself has an excellent surface roughness (z) which is between 0.2 ym and 6.3 ym, in particular between 2.9 ym and 6.3 ym, and the sufficient mascara mass, if necessary even relatively, ie per area, more than the due to the particles rough bristle shaft 2, can save. In order to achieve a further improvement further, in principle, two measures which can optionally be implemented in each case are conceivable.

On the one hand, it may be expedient to select a grinding wheel with a grain size in the production of the oblique section 3 or the double oblique section 3 *, which is such that the surface roughness of the respective surface is actually a fine surface finish ) incision bleed surface 4 is greater than that of the undisturbed ,

z y

Borstenschaftoberflache 20, each surrounding the outwardly projecting particles 19.

On the other hand, it may be expedient to carry out precisely the bristles 1 provided with the particles 19 as tube-like, hollow inside, preferably longitudinally slotted bristles le, as shown in FIGS. 6 and 7. This hollow bristle le inside can have a circular cross-section. Preferably, it has a non-round, ideally a polygonal cross-section. Due to this special design as hollow bristle le inside, the bristle le is able to deliver in the area of its oblique section 3 Mascara mass to the outside, which has been previously stored in the cavity 25 of the bristle le. This results in a synergistic effect, because the eyelash W is already precoated when sliding along the gate surface 4, so has already received a certain amount of mascara when it slides off the gate 4 in the region of the bristle shaft 2, due to its roughness a thick film mascara mass keeps stockpiled and then the coating of the eyelash W still intensified significantly.

In the embodiment of the bristles 1 as hollow inside, offset with particles 19 bristles le is almost always or preferably even mandatory a (simple) oblique cutting performed and no double bevel 3 *.

What are the advantages of slanted incisions on hollow bristles inside, why these advantages occur and which ones are obligatory or advantageous

Design options are implemented, which is set out in detail above.

Figs. 10, 11 and 12 illustrate a variant of the mascara brush according to the invention with extraordinary advantageous order and Separtionswirkung.

As can be seen here, the bristle stocking 26 consists of filaments 1 ^λ formed bristles la, lc with wedge-shaped

Sharpening and further, also formed from filaments 1 ^λ bristles lb without wedge-shaped sharpening, wherein the bristles la, lc differ only in the orientation of their gate surface 4. The bleed surface 4 of each of the bristles 1a points to the brush end 16 and the

Bleed face 4 of each of the bristles lc points to

Brush tip 15.

Here, the bristle stocking 26 is designed so that the bristles la with wedge-shaped sharpening to a plurality of adjacent arranged in a row of bristles 17 a sector 100 of

Form bristle facing 26, the bristles lc with wedge-shaped sharpening to a plurality of adjacent in a row of bristles 17 ^λ arranged a sector 102 of the bristle stocking 26 form, and the other bristles lb arranged in a row of bristles 17 ^{λ λ} form another sector 101 of the bristle stock 26. In the figuratively shown in Fig. 12

For example, the sectors 100 and 102 and the other sector 101 alternately follow each other in the circumferential direction. The sector 102 is again followed by a sector 101. The sequence of sectors continues until over the circumference of the bristle trim 26 a 360 ° circular arc is closed.

The number of sectors depends on the individual application and the rheological properties of the cosmetic used. Preferably, there are between 1 to 8 sectors 100, 102 and between 1 to 8 further sectors 101.

Alternatively, it is possible that the filaments 1 ^λ or bristles la, lc with wedge-shaped sharpening in the otherwise of other filaments 1 ^λ or bristles 1, lb ₁ existing bristle trim 26 are arranged so that they form a spiral on the peripheral surface of the

Borstenbesatzes 26 running course, which is not shown figuratively here.

Ideally, it is such that the other filaments 1 ^λ or bristles lb made of the same material as the

Filaments 1 ^λ or bristles la, lc with wedge-shaped sharpening. In another, likewise inventive and therefore claimed variant of the previously with reference to the figures

explained Mascaraapplikators the stocking is designed so that the chisel surfaces 4a of the filaments 1 ^λ or bristles la, lc, ld with wedge-shaped sharpening, neglecting its wedge angle, perpendicular to the course of the imaginary

Longitudinal axis of the spiral path are aligned.

While in the embodiment of FIG. 12, all bristles la, lb, lc of a respective row of bristles 17, 17 17 ^{λ λ} are formed identically with respect to the formation of the bristle tip, a row of bristles may of course also be formed of bristles, each different

having trained bristle tips. Thus, it is possible that bristles la, lb, lc or even combinations with bristles ld, le, lf are formed in a row of bristles adjacent to and adjacent to one another

are arranged recurring pattern to each other, wherein the pattern forms a sector, an area or a zone. They are all possible combinations according to the law of the law

executable. Also, sectors, areas or zones

spiral over the circumference of the bristle stocking 26 or arranged extending in the longitudinal direction of the wire core longitudinal axis LD, and be aligned. LIST OF REFERENCE NUMBERS

I bristle

1 ^λ filament

la, lc, ld, le, lf bristles pointed in a wedge shape

(Variants)

lb bristles that are not pointed in a wedge shape (variant)

2 bristle shaft

3 oblique cut

3 * double bevel cut

4 gate area

4a chisel cutting edge

5 bristle core

6 bristle coat

7 Wall thickness of the bristle jacket

8 bristle core diameter

9 bristle outer diameter

9 * enveloping circle diameter

10 bristle length

II wire clip

12 First wire section of the wire clip

13 Second wire section of the wire clip

14 slot

15 brush tip

16 brush end

17, 17 17 ^{λ λ} bristle row

18 mascara brush

19 particles

20 surface

21 vertical arrow

22 horizontal arrow

23 inward end

24 straight edge cavity

bristle

Sectors of bristles pointed in a wedge shape

Sectors of bristles that are not pointed in a wedge shape

wedge angle

Cutting surface length

bristle longitudinal axis

maximum length extension

minimum length extension

Wall thickness of the bristle jacket

eyelash

Wire core longitudinal axis

Bristle diameter (corresponds to 9)

Claims

claims

A mascara brush (18) having a core of at least two along a wire core longitudinal axis (LD) with each other

twisted wire sections (12, 13) and a

Borstenbesatz (26) of filaments (1 ^λ ) formed bristles (1, la - lf) made of plastic, which are each held clamped between the two wire sections (12, 13) and at their free ends with a

wedge-shaped or without a wedge-shaped bristle tip are formed, characterized in that the

Bristles (1, la - lf) from one to a fiber

extruded plastic material are formed, the outwardly projecting particles (19) are added

and / or being equipped with indentations roughening the bristle surface (20), the wedge-shaped ones being at their free ends

Bristle having bristle tip (la, lc, ld, le, lf) at least one wedge-forming leading surface

(4) whose surface roughness (Rz) is between 0.2 ym and 6.3 ym, in particular between 2.9 ym and 6.3 ym. 2. mascara brush (18) according to claim 1, characterized

characterized in that the surface roughness (Rz) is made by grinding the bristle ends by means of a grinding wheel. 3. mascara brush (18) according to claim 1 or 2, characterized

in that the surface roughness (Rz) of the respective gate surface (4) is greater than that of the undisturbed bristle shank surface (20) having the outwardly projecting particles (19) and / or indentations. Mascara brush (18) according to the preceding claims, characterized in that the entirety of bristles (1) for the most part has a wedge-shaped tip with at least one gate surface (4).

5. Mascara brush (18) after one of the preceding ones

Claims, characterized in that a part of the bristles (1) by a sloping section (3)

having formed wedge-shaped tip with a gate surface (4).

6. Mascara brush (18) after one of the preceding ones

Claims, characterized in that a part of bristles (1) has a wedge-shaped tip formed by a Doppelschräganschnitt (3 *), the two successive

comprises tapered gate surfaces (4) which intersect or their imaginary extensions on or in the region of the free end of a respective bristle (1).

7. Mascara brush (18) after one of the preceding

Claims, characterized in that the

Gating surfaces (4) transversely, in particular vertically, to the wire core longitudinal axis (LD) are aligned.

8. Mascara brush (18) after one of the preceding ones

Claims, characterized in that the

Gating surfaces (4) of the bristles (la, lc, le, lf) with a gate surface (4) partially in the direction of

Brush end (16) and partially to the brush tip (15) are aligned.

9. Mascara brush (18) after one of the preceding ones

Claims, characterized in that the bristle trim (26) has a plurality of regions, sectors or zones (100, 102) in the circumferential direction of the bristle trimming (26) transversely, in particular perpendicular, to the wire core longitudinal axis (LD) or in the circumferential direction of the bristle trimming (26) spiral to the wire core longitudinal axis (LD) or in

Longitudinal direction of the bristle trim (26) along,

in particular parallel to the wire core longitudinal axis (LD) extending aligned, and each having at least one of a plurality of mutually adjacent and each having a similar trained bristle tip

Bristles (la, lc) existing bristle row (17, 17 ^λ ) comprise or of such a bristle row (17, 17 ^λ ) are formed, and each in the circumferential direction

and / or are arranged in the longitudinal direction of the bristle facing adjacent to an area or sector or zone (101) comprising a plurality of bristles (1b), the bristles (1b) of which differ from one another

have trained bristle tip. 10. Mascara brush (18) after one of the preceding ones

Claims, characterized in that the bristle facing (26) has a plurality of regions, sectors or zones which are transversely, in the circumferential direction of the bristle trim (26),

in particular perpendicular to the wire core longitudinal axis (LD) or in the circumferential direction of the bristle trimming (26) spirally to the wire core longitudinal axis (LD) or in the longitudinal direction of the bristle trimming (26) along, in particular parallel, to the wire core longitudinal axis (LD) are aligned, and in each case at least one of a plurality of adjacent bristles (1) existing bristle row

comprise, the adjacent bristles (1) each having a differently shaped bristle tip.

11. mascara brush (18) according to claim 9 or 10, characterized

characterized in that the multiple areas, sectors or Zones (100, 101, 102) circumferentially transversely or longitudinally to the wire core longitudinal axis (LD) once the circumference or a portion of the circumference of the bristle trim (26)

paint over.

Mascara brush (18) after one of the preceding ones

Claims, characterized in that the bristle stocking (26) consists of bristles (la, lc, ld, le, lf) or filaments (1 ^λ ) with wedge-shaped sharpening and of further bristles (lb) or filaments (1 ^λ ) without wedge-shaped sharpening wherein the bristles (26) is preferably designed so that the bristles (la, lc, ld, le, lf) or filaments (1 ^λ) one or more sector (s) with a wedge-shaped sharpened point (100, 102) (of the bristle pack 26) and the further bristles (lb) or filaments (1 ^λ ) form one or more further sector (s) (101), the sector (s) (100, 102) and the one or more (n) Sector (s) (101) preferably in

Circumferential follow each other alternately.

Mascara brush (18) according to any one of claims 9 - 12, characterized in that between 1 to 8 sectors

(100, 102) and between 1 to 8 further sectors (101) are present.

A mascara brush (18) according to claim 12 or 13, characterized in that the bristles (la, lc, ld, le, lf) or filaments (1 ^λ ) with wedge-shaped sharpening in the otherwise further bristles (lb) or filaments (1 ^λ ) existing bristle facing (26) are arranged so that they form a spiral on the peripheral surface of the

Brstenbesatzes (26) form running path.

15. mascara brush (18) according to any one of claims 12 to 14, characterized in that the further bristles (lb) or filaments (1 ^λ ) consist of the same material as the bristles (la, lc, ld, le, lf) or filaments (1 ^λ ) with wedge-shaped sharpening.

A mascara brush (18) according to claim 14 or 15, characterized in that the chisel surfaces (4a) of the bristles (la, lc, ld, le, lf) or filaments (1 ^λ ) with wedge-shaped sharpening, neglecting their wedge angle, perpendicular to the course are aligned with the imaginary longitudinal axis of the spiral path.

17. Mascara brush (18) after one of the preceding

Claims, characterized in that for the angle

(), by the oblique section (3) or the

Double oblique section (3 *) formed leading surface (s) (4) with respect to the longitudinal axis of the bristle (L) is inclined / are, the relationship ^ 55 °, preferably ^ 35 °, in particular <20 °.

18. Mascara brush (18) according to one of the preceding

Claims, characterized in that the bristles (le) or filaments tubular and hollow inside and in

Direction along its longitudinal axis are formed slotted throughout.

Mascara brush (18) after one of the preceding ones

Claims, characterized in that the

Outer diameter (9, D) circularly formed bristles (1, la, lb, lc, ld, lf)) Ξ> 115 μιτι, preferably ^ 215 μιτι, and -S 320 μιη amounts.

20. Mascara brush (18) after one of the preceding ones

Claims, characterized in that the outside enveloping circle non-circular bristles (le) a 3 y

Enveloping circle diameter (9 *) has> 100 μιη,

preferably ^ 200 μιη, and -S 340 μιτι, in particular -S 320 μιη, is. 21. Mascara brush (18) according to one of the preceding

Claims, characterized in that at least a part of the bristles (1) by coextrusion of a first plastic material and a contrast

made of different second plastic material, wherein the two plastic materials

differ with respect to their modulus of elasticity and / or their Shore D hardness and wherein the first

Plastic material has a Shore D hardness -S 80 and / or the second plastic material has a modulus of elasticity of> 1300 N / mm ² ,

and that, after a grinding of the respective one of these different plastics regions carried out to produce a respective gate surface (4) bristle core (5) and bristle jacket 6) with one and the same grinding wheel in the region

Bristle core (5) and in the bristle shell (6) different roughness arise, each having a surface roughness (Rz) between 0.2 μιη and 6.3 μιτι, in particular between 2.9 μιη and 6.3 μιτι have.