EP3515245A1 - Applikator mit mikrostrukturierter oberfläche - Google Patents
Applikator mit mikrostrukturierter oberflächeInfo
- Publication number
- EP3515245A1 EP3515245A1 EP17777550.9A EP17777550A EP3515245A1 EP 3515245 A1 EP3515245 A1 EP 3515245A1 EP 17777550 A EP17777550 A EP 17777550A EP 3515245 A1 EP3515245 A1 EP 3515245A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bristle
- applicator
- grains
- bristles
- less
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B9/00—Arrangements of the bristles in the brush body
- A46B9/005—Arrangements of the bristles in the brush body where the brushing material is not made of bristles, e.g. sponge, rubber or paper
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46D—MANUFACTURE OF BRUSHES
- A46D1/00—Bristles; Selection of materials for bristles
- A46D1/02—Bristles details
- A46D1/0261—Roughness structure on the bristle surface
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B3/00—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
- A46B3/02—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier by pitch, resin, cement, or other adhesives
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B5/00—Brush bodies; Handles integral with brushware
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B2200/00—Brushes characterized by their functions, uses or applications
- A46B2200/10—For human or animal care
- A46B2200/1066—Toothbrush for cleaning the teeth or dentures
Definitions
- the invention preferably relates to an applicator with bristles which have a microstructured surface, moreover, the invention also offers an option for brushless applicators.
- bristled applicators In the field of bristled applicators, a distinction is basically made between wire-core applicators in which bristles are held clamped in the form of short-cut filaments between two twisted wire cores, and injection-molded applicators in which the core of the applicator together with the bristles formed thereon by injection molding will be produced.
- Each bristle has an individual bristle cavity in which the
- the object of the invention is another
- microstructured is microstructured. The microstructuring can only
- the bristle be attached in sections, for example in the form of local rings which surround the bristle in the circumferential direction or of local stripes extending in the direction of the longitudinal axis of the bristle along this.
- the majority of the surface of the bristle is microstructured, ideally the entire bristle.
- a confused projection means a random arrangement, in contrast to a directed arrangement in rows or in a matrix-like manner
- the said grains are characterized by being connected to the bristle core only along less than 40%, or better still less than 35%, of their original free outer surface.
- the unconnected part of the surface is exposed to the outside and therefore for wetting with the cosmetic composition
- the individual grains have a mean diameter of ⁇ 125 ⁇ and preferably has a mean diameter of ⁇ 90 ⁇ .
- the invention refers to the mean diameter of a grain here and everywhere the diameter of the imaginary smallest sphere into which the grain in question can still be inscribed, if one imagines it detached from the bristle-core.
- Bristle surface can be adapted specifically to each of the bristle to be transferred cosmetic and its rheological properties.
- microstructuring can work well with the well-known, also from the field of "rapid prototyping" three-dimensional
- Plastic printing or laser sintering of plastics are produced, or generally with a primitive forming process.
- melting times have to be skilfully controlled so that no substantially smooth surface is melted.
- the laser beam must be directed and / or focussed so that it only partially and locally by appropriately localized grains used as raw material
- Another object of the invention is to achieve a further improvement and adjustability of the mass storage capacity of bristle-free applicators.
- an applicator with a particularly structured cosmetic application surface is specified.
- a Kosmetiktinctsober Construction here is understood in any case a surface that belongs to a delicate applicator whose actual applicator body (without stem and
- This cosmetic application surface may be a surface consisting of single surfaces formed by bristle shells, together with the single surfaces found in the area of the bristle field between the bristles. However, this is preferably the cosmetic application surface of an applicator designed without protruding bristles, fingers or pins.
- the cosmetic application surface according to the invention is characterized in that its surface is microstructured.
- the microstructuring may be applied only in sections, for example in the form of local rings, which the
- Applicator circumferentially encompass or from local islands, preferably as an ordered pattern on the entire Cosmetic application surface are arranged.
- the majority is the cosmetic application surface
- microstructured ideally the whole
- microstructuring takes place here also in that in
- the said grains are characterized by being connected to the bristle core only along less than 40%, or better still less than 35%, of their original free outer surface.
- the unconnected part of the surface is exposed to the outside and therefore for wetting with the cosmetic composition
- the individual grains have a mean diameter of ⁇ 125 ⁇ and preferably has a mean diameter of ⁇ 90 ⁇ .
- the average diameter of a grain the invention here and everywhere denotes the diameter of the imaginary smallest sphere into which the grain in question can still be inscribed, if one imagines it detached from the bristle core.
- Cosmetic application surface targeted to each of the
- Cosmetic application surface to be transferred cosmetic and its rheological properties are adjusted.
- the set of grains used for the microstructuring of the surface first grains comprises or even completely consists thereof, which have a mean diameter of greater than or equal to 30 ⁇ and preferably greater than or equal to 40 ⁇ .
- the set of grains used for the microstructuring of the surface first grains comprises or even completely consists thereof, which have a mean diameter of greater than or equal to 30 ⁇ and preferably greater than or equal to 40 ⁇ .
- a plurality of second grains is distributed, which protrude according to the invention of the bristle core and / or protrude in a corresponding manner from the first grains and their average diameter ⁇ 30 ⁇ or better ⁇ 25 ⁇ .
- the sprinkling of such second, smaller bodies can do so contribute to further increase the wettable surface and then, for example, in critical cosmetic substances
- the bristle does not have on its entire surface an inventive
- the bristle casing in any case has an area of 1 mm 2 , on the at least five, more preferably at least eight grains in the
- the grain in question like an anchor, can dive into the layer of the cosmetic mass that loads the bristle in a form-fitting manner and thereby ensure a particularly good hold of the cosmetic mass.
- the holding function that unfolds the microstructured surface compared to the cosmetic mass can be improved even further by having a plurality of grains having an undercut of the said type on an area of 1 mm 2
- microstructuring of the surface is controlled such that at least 25%, better still at least 30%, of the free surface of the bristle is in the region of a radial undercut.
- An undercut is a free space from which in a purely radial direction (perpendicular to the longitudinal axis of the bristle) no straight path leads out.
- the bristle carrier in its bristle-free area, which lies between the surrounding bristles rising from the bristle carrier, with a microstructured
- Mass storage capacity of the bristle carrier can be adjusted.
- Applicators have proved to be particularly favorable, which are distinguished by the fact that the applicator core or cup carrier is a cast, extruded or injection-molded plastic part or a metal part with bristles applied in layers thereon.
- a particularly cost-effective Production can be achieved if the plastic injection-molded part or the metal part is already equipped with a set of bristles (eg by injection or inserted filaments) and only additional bristles or special posts with the help of a
- Forming layer forming process be applied and / or existing bristles by mere coating using the original forming layer molding process with the microstructured surface according to the invention.
- microstructured surface is applied to the blank by means of the original forming layer molding process. If preferred, the microstructured according to the invention
- Applicator blank preferably recesses provided, which are filled by the original forming layer forming process.
- Protection is also desired for the production of such an applicator and / or for the production of an applicator with the surface structured according to the invention. Protection is also claimed for an applicator, which is characterized in that a portion of the bristles are injection molded bristles, between the subsequently using a
- Forming layer forming method additional bristles have been incorporated and for a method for producing such an applicator.
- an applicator core or bristle carrier is produced as the injection molded part, which is subjected to the layered application of the bristles to a treatment and preferably to a corona treatment, which the
- Bristle carrier is increased and preferably adjusted so that it increases the polar component of the surface tension.
- the edge layer at least where it is structured beyond the surface roughness, which extends to +/- 2/1000 mm, has a support content of less than or equal to 50%, measured to a depth of 2/10 mm and better to a depth of 4/10 mm.
- the measurement is carried out in such a way that the outermost surface of the surface layer - if necessary of one Surface tip to the immediately adjacent surface tip - a straight line is laid. From there, it is measured radially inward by the said amount, namely 2/10 mm or, preferably, 4/10.
- the percentage of "air" measured within this strip is, on average, at least equal to or greater than the proportion of plastic measured within that strip.
- the applicator is where he has the
- FIG. 1 shows an exemplary embodiment of a bristle which according to the invention is microstructured in the region of its tip, a good part of the tip has been broken away, which is illustrated by the view of the hatched bristle core.
- FIG. 2 shows a detail enlargement from the left flank of the microstructured bristle tip according to FIG. 1.
- FIG. 3 illustrates the essential dimensions of a
- Figure 4 illustrates the application of the invention to a lip applicator not entirely covered with bristles.
- Fig. 5 shows the application of the invention to another entirely not bristled, but additionally provided with a macroscopic structuring lip applicator, here weine partial sectional view with weg dilemmaem
- FIG. 1 shows the upper part of a plastic bristle which can form the trimming of a bristle applicator according to the invention.
- the length LAE of a bristle according to the invention is generally between 3 mm and 10 mm.
- the maximum bristle diameter DB of a bristle according to the invention is generally between 0.01 mm and 0.05 mm.
- the bristle of the invention is preferably flexible, i. she can be deflected to the side. Typically, that is
- Cone angle AP from 0.2 ° to 10 °.
- the applicators of the invention typically have between 75 and 750 bristles of the type described herein.
- the plastic of the bristles does not have to be identical to the plastic of the bristle carrier, even if the bristles of the bristle carrier merge into one another in one piece. Furthermore, it may be advantageous to produce the bristle along different regions of different plastics. For example, it has proved to be favorable, the bristles in their foot from a particularly elastic plastic
- the bristle shown in FIG. 1 only the region of the bristle tip is provided with the microstructuring according to the invention.
- even more isolated regions of the bristle may be provided with such a microstructure.
- a second embodiment of the invention is illustrated by the upper half of Fig. 4, a third Embodiment through the lower half of Fig. 4. It is a lip applicator. The blank this
- Lip applicator is preferably made as an injection molded part. Subsequently, the lip applicator in the manner already described above with sections with the
- microstructured surfaces have been equipped.
- the end face 6 of the lip applicator which is intended to receive a certain amount of the cosmetic to be applied from the stock and to apply it to the lips, has been equipped according to the invention.
- microstructured first regions 7 are provided at the edge of the end face. These regions 7 are preferably microstructured in such a way that the
- microstructured areas 8 are present.
- These further microstructured regions 8 are preferably formed as separate islands, each of which ideally has a circular, oval, elliptical or plum-like surface extension.
- the microstructured surface takes in this embodiment, only the smaller part of the intended purpose as application surface area (usually that is the
- the third embodiment depicts the lower half of FIG. 4.
- the end face 6 of the lip applicator which is intended to receive a certain amount of the cosmetic to be applied from the supply and to apply to the lips, has also been equipped according to the invention.
- microstructured regions 9 are provided, which in this case preferably have the shape of concentric or equidistantly arranged rings. Between the microstructured regions, conventional annular regions 10 may also be provided. This arrangement can affect the mass storage and mass delivery behavior extremely positive.
- the microstructured areas 9 deduct an increased amount of the cosmetic from the supply and transport to the skin area to be treated. During application, a portion of the mass stored by the microstructured areas is then displaced into the conventional areas and then released by them very quickly to the area of the skin to be treated.
- FIG. 5 illustrates.
- macroscopically raised areas 11 are executed on the lip applicator.
- At least one speaks of structures that are at least in one direction with respect to their immediate, on both sides along the said direction max. 3 mm away from the environment (FIG. 5, dimension W) by at least 0.8 mm (FIG. 5, dimension A).
- the valleys 12 may be expedient alternatively to equip only the valleys 12 with the microstructured surface according to the invention or to additionally provide the valleys 12 with the microstructured surface.
- the bristle has a bristle core 4.
- Bristle core 4 may have a homogeneous structure or a granular structure. It is also possible to speak of a homogenous structure when there are local air pockets or local gaps are (not shown in the drawing), as long as they do not reduce the strength and elasticity of the bristle so much that the bristle no longer shows the flexibility mentioned above.
- corresponding applicator core having a homogeneous structure or a granular structure.
- a homogeneous structure one can then speak in this case, if local
- Air pockets or local gaps are noted (not shown in the drawing) as long as they do not significantly reduce the strength and elasticity of the bristle.
- Section surface over which one can cut off the respective grain of the bristle core 4 mind, is less than 40% of the free in the grains 2, 3 essential for the invention
- the grains have a certain size. How this size is determined, can also be seen well with reference to FIG 2.
- a mental sphere is formed into which the grain to be measured is inscribed.
- the radius of the smallest possible sphere into which the grain (optically measured) is still inscribed can, represents the average diameter 0M of the grain. This mean diameter 0M is in the grains of the invention ⁇ 125 ⁇ .
- first grains 2 Preferably, a distinction is made here between larger first grains 2 and smaller second grains 3; these two types of grains can also be easily recognized in FIG.
- the larger grains 2 are characterized by the fact that they have a mean diameter 0M of at least 30 ⁇ .
- the preferably additionally present smaller grains 2 characterized by the fact that they have a mean diameter 0M of ⁇ 30 ⁇ and preferably even of ⁇ 25 ⁇ .
- Manufacturing process is adjusted so that regularly occur grains that are immediately adjacent, but do not touch. These grains are then conveniently attached to the bristle core so that their distance from there, where they have the smallest distance KA from each other, up to the
- Area B by being attached to the bristle core, enlarged again.
- an applicator core or bristle carrier as a prefabricated part and in particular as an injection molded part
- Suitable treatment methods here are the corona treatment and possibly alternatively the fluorination or the flame or
- Plasma treatment The aim of these methods is to increase the polarity of the surface, thereby improving wettability and
- the corona treatment is usually "in line" at the end of the
- the bristle carrier rotates around the electrode.
- the electrode is powered by a high frequency generator
Landscapes
- Brushes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202016105318.8U DE202016105318U1 (de) | 2016-09-23 | 2016-09-23 | Applikator mit mikrostrukturierter Oberfläche |
PCT/EP2017/074254 WO2018055173A1 (de) | 2016-09-23 | 2017-09-25 | Applikator mit mikrostrukturierter oberfläche |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3515245A1 true EP3515245A1 (de) | 2019-07-31 |
Family
ID=57208728
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17777550.9A Withdrawn EP3515245A1 (de) | 2016-09-23 | 2017-09-25 | Applikator mit mikrostrukturierter oberfläche |
Country Status (7)
Country | Link |
---|---|
US (1) | US20190261770A1 (de) |
EP (1) | EP3515245A1 (de) |
JP (1) | JP2019528923A (de) |
CN (1) | CN109715008A (de) |
BR (1) | BR112019005654A2 (de) |
DE (1) | DE202016105318U1 (de) |
WO (1) | WO2018055173A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3935996A1 (de) | 2020-07-06 | 2022-01-12 | GEKA GmbH | Applikator zum auftragen einer kosmetik oder gesundheitspflegemasse |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2800586B1 (fr) * | 1999-11-10 | 2001-12-07 | Oreal | Applicateur d'un produit liquide, pateux ou pulverulent comportant des poils charges de particules, ensemble d'application ainsi equipe, utilisation de l'ensemble et procede de fabrication de tels poils |
ES2249451T3 (es) * | 2000-07-12 | 2006-04-01 | L'oreal | Dispositivo de acondicionamiento y/o de aplicacion que contiene unas fibras que comprenden por lo menos un cuerpo imantado o imantable. |
US20090188520A1 (en) * | 2008-01-30 | 2009-07-30 | Whitehill Oral Technologies, Inc. | Coated dental devices with ablative abrasives |
EP2123189A1 (de) * | 2008-05-20 | 2009-11-25 | Braun Gmbh | Zahnbürste, Zahnbürstenfaser und Verfahren zu deren Herstellung |
US20170215565A1 (en) | 2014-07-31 | 2017-08-03 | Geka Gmbh | Wire-core applicator with bevelled hollow fiber bristles |
-
2016
- 2016-09-23 DE DE202016105318.8U patent/DE202016105318U1/de not_active Expired - Lifetime
-
2017
- 2017-09-25 CN CN201780057802.8A patent/CN109715008A/zh active Pending
- 2017-09-25 BR BR112019005654A patent/BR112019005654A2/pt not_active Application Discontinuation
- 2017-09-25 US US16/333,678 patent/US20190261770A1/en not_active Abandoned
- 2017-09-25 EP EP17777550.9A patent/EP3515245A1/de not_active Withdrawn
- 2017-09-25 WO PCT/EP2017/074254 patent/WO2018055173A1/de unknown
- 2017-09-25 JP JP2019515635A patent/JP2019528923A/ja active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3935996A1 (de) | 2020-07-06 | 2022-01-12 | GEKA GmbH | Applikator zum auftragen einer kosmetik oder gesundheitspflegemasse |
Also Published As
Publication number | Publication date |
---|---|
CN109715008A (zh) | 2019-05-03 |
BR112019005654A2 (pt) | 2019-06-04 |
US20190261770A1 (en) | 2019-08-29 |
JP2019528923A (ja) | 2019-10-17 |
WO2018055173A1 (de) | 2018-03-29 |
DE202016105318U1 (de) | 2016-10-12 |
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