• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a method for manufacturing a cosmetic product applicator comprising a gripping part and an application part comprising bristles or teeth. The method comprises an additive manufacturing step (S1) by sintering a powder of a plastic material followed by a de-inking step (S2) and a post-treatment for the removal of loose particles from said product applicator cosmetic or partially sintered, the post-treatment comprising the steps of: - sanding (S4); and - ionizing blowing (S5). This process makes it possible to eliminate particles that may be irritating, for example larger than 500 microns, while being suitable for industrial production. The invention also relates to an associated production method.
    公开号:FR3076759A1
    申请号:FR1850296
    申请日:2018-01-15
    公开日:2019-07-19
    发明作者:Christian Salciarini；Quentin Bertucchi
    申请人:Chanel Parfums Beaute SAS；
    IPC主号:
    专利说明:

    The present invention relates to the field of industrial processes for obtaining duplicators of a cosmetic product.
    The application of a liquid, fluid or powder cosmetic product is generally carried out using an applicator comprising bristles or teeth making it possible to retain, like the bristles of a brush, the cosmetic product.
    Although the invention is described in the context of the application of a mascara, in this document cosmetic products include in particular all products for making up the skin, the lips or the integuments. Cosmetic products also include care products, in particular liquid care formulas, intended for application to the skin, lips and integuments. The invention is of particular interest in the context of the application of cosmetic products near the eyes, in particular on the eyelashes or the eyelids. For example, the cosmetic product can be a mascara, an eye shadow, or a makeup for the eye area commonly known by the English term "eyeliner".
    A mascara article, or “mascara”, conventionally comprises a case, a mascara reservoir and an applicator. There are several types of applicators, those of the "bottle brush" type, those injected and those manufactured by additive manufacturing (sometimes called "additive synthesis"). Additive manufacturing refers to the manufacturing processes by adding or aggregating material, also commonly referred to as "three-dimensional printing" or "3D printing".
    A brush-type applicator includes a brush which includes bristles formed by fibers trapped in a twisted wire forming the core of the applicator.
    An injected applicator is generally formed in one piece and has bristles or teeth made of plastic for example.
    An applicator manufactured by additive manufacturing is also generally in one piece and can be formed for example from a powder of thermoplastic polymers.
    Traditional methods of obtaining a part by additive manufacturing make it possible to obtain parts having very precise dimensional characteristics. However, the cosmetic product applicators obtained may have certain defects or drawbacks. In particular, these applicators may have a poorly controlled, unsatisfactory or irregular roughness, in particular at the level of the hairs or teeth of application. In addition, these applicators may have particles which are detached or liable to detach during application. This affects the quality of the application and can be problematic, in particular when applying a cosmetic product near the eyes, for example on the eyelids. In particular, particles of a certain size can be irritating to the cornea.
    Finally, current processes are not well suited to mass production.
    The invention thus aims to propose a method for manufacturing an applicator for a cosmetic product solving at least one of the aforementioned drawbacks.
    The invention thus relates to a method of manufacturing a cosmetic product applicator comprising a gripping part and an application part comprising bristles or teeth, the gripping part and the application part being formed of a in one piece. The method comprises a step of additive manufacturing by sintering a powder of a plastic material followed by a step of dedusting and a post-treatment for the removal of particles detached from said applicator of cosmetic product or partially sintered. Post-treatment includes sandblasting (S4) and ionizing blowing (S5) stages.
    The process for manufacturing a cosmetic product applicator is therefore envisaged according to the invention as a set of steps, the succession of which allows the desired properties of the applicator to be obtained. In particular, all of the steps of the claimed process are necessary to obtain a desired roughness at the level of the application part (comprising bristles, or teeth) of the applicator, while guaranteeing the absence particles potentially irritating (for example to the eye of the user) loose or which may come off when using the applicator.
    The post-treatment can also include a final washing step (S6), preferably in a non-aqueous solvent.
    The plastic material used in the manufacturing process can be a polyamide, preferably an aliphatic polyamide, for example polyamide 11.
    The manufacturing process may include, before the additive manufacturing step, a step of packaging the polyamide powder comprising:
    - the supply of new powder having only grains whose largest dimension is less than or equal to 150 microns;
    - the supply of so-called used powder, having already been used in an additive manufacturing step, and the calibration of said used powder so that it only has grains whose largest dimension is less than or equal to 150 microns;
    - the mixture of new powder and used powder calibrated according to a new powder / used powder ratio between 70/30 and 50/50, preferably of the order of 60/40.
    Additive manufacturing can involve laser melting on a powder bed.
    The manufacturing process may include a pre-blowing step prior to the sandblasting step. Sandblasting can be carried out by microbeading with glass beads of diameter between 45 microns and 90 microns. Sandblasting can be carried out in a rotary drum comprising two sandblasting nozzles.
    The ionizing blowing (S5) can be carried out in a rotary drum comprising an internal ionization bar and an external ionization bar.
    The sandblasting (S4) and ionizing blowing (S5) steps can for example be carried out in batches of 300 to 10,000 cosmetic product applicators.
    The invention also relates to a method for producing cosmetic product duplicators comprising a manufacturing process as described above and further comprising a qualification step (S7) comprising determining, in a batch of a predetermined number cosmetic product duplicators , of the number of loose or partially sintered particles of larger dimension greater than 500 microns, and, if said number of particles is not zero, the modification of at least one parameter of a post-treatment step, then the succession such manufacturing processes and qualification steps (S7) until said number of larger particles greater than 500 microns is zero.
    Other features and advantages of the invention will appear in the description below.
    In the appended drawings, given by way of nonlimiting examples:
    - Figure 1 shows in the form of a block diagram a method according to an embodiment of the invention;
    - Figure 2 shows in the form of a block diagram a method according to an embodiment of the invention comprising the method of Figure 1 and optional additional steps.
    The manufacturing process presented in FIG. 1 presents the steps of a manufacturing process for a cosmetic product applicator according to the invention. This process includes an additive manufacturing step S1, with a view to obtaining a raw part.
    Additive manufacturing (S1)
    The additive manufacturing step S1 is carried out from a powder, in particular a powder of a plastic material. The additive manufacturing process used is advantageously a powder bed melting process, powder bonding, also called "Selective laser sintering".
    A powder bed fusion process consists of producing objects from powder materials using one or more lasers in order to selectively melt the powder particles on the surface of the powder bed, layer after layer. diaper, in a closed room. The type of powder used can be any type of powder capable of being used in such a process.
    The powder used can in particular be a powder of a thermoplastic polymer or a powder of a polyamide, preferably an aliphatic polyamide, for example polyamide 11, also designated PA11 or polyacrylamide.
    Polyamide 12 or PA12 can also be used with success, although PA11 is preferable because it has greater flexibility.
    An example of a particularly suitable PA11 powder is the powder sold under the reference "PA1101" by the company EOS Materials.
    Preferably, the powder has grains whose largest dimension is less than or equal to 150 microns. Preferably, the largest dimension is less than or equal to 80 microns, and even more preferably less than or equal to 60 microns.
    The machine used for the additive manufacturing stage can be a machine sold under the name FORMIGA P110 by the company EOS Materials, or any equivalent machine.
    During the manufacturing stage, the additive manufacturing machine is first loaded with powder.
    For example, production can be carried out in a container containing approximately 10 kg of powder (typically for PA11). The manufacturing can be carried out on several stages, for example between two and ten stages, in particular on seven stages.
    The formation of blanks by laser sintering then begins. According to an embodiment given by way of example, the powder in the container is maintained at approximately 150 ° C. The laser or lasers provide the additional energy necessary for the localized melting of the powder. For example, a 25 W laser can be used successfully.
    Several laser passes may be required.
    Training by additive manufacturing of a batch of three thousand to four thousand pieces can take about fifteen hours under these conditions. At the end of this raw parts formation phase, the assembly must be cooled. In the example taken above, the cooling can take about fifteen hours. The total time of the additive manufacturing step can therefore be of the order of 30 hours.
    In order to avoid oxidation, the cooling is advantageously carried out under neutral gas, for example under argon.
    In order to be able to optimize the cycle times, and more simply the time of use of the additive manufacturing machine for the formation of blanks, the cooling can be carried out outside the machine, with putting under neutral gas (in particular under argon) contents of the bin.
    The additive manufacturing step S1 is carried out in a machine which uses a digital file representing geometrically the cosmetic product applicator. The file is obtained after designing the applicator on computer-aided design (CAD) software. This file can be in STL format or any other standard file format usable for an additive synthesis by fusion on a powder bed. The file is then processed by software supplied by the manufacturer of the machine used for the additive synthesis. This software cuts into sections the file in the form of digital images (for example a hundred images) for example in SU or BFF format, each of which corresponds to a layer of the model to be printed, that is to say tell a section of the applicator taken in a plane perpendicular to its longitudinal axis. This data is then transmitted to the additive manufacturing machine so that it produces the applicator.
    The additive manufacturing step thus results in the formation of raw parts, namely applicators of raw cosmetic product, embedded in powder and full of powder.
    However, the Applicant has found that not only had the raw cosmetic applicators thus obtained had to be separated from the powder, but that it was also important, in particular for the applicators intended for the application of a cosmetic product near the eyes, to guarantee the total absence of grains detached from the applicator (for example retained in its hairs) or liable to detach during use, and the largest dimension of which is greater than a given size, capable of cause eye irritation. The post-treatment described below aims at the total elimination of these grains. Typically, post-processing aims to remove all particles larger than 500 microns. Indeed, particles of dimensions greater than the dimensions of the initial powder grains can be generated during additive manufacturing, for example in the event of incomplete sintering of certain grains.
    Body (S2)
    The additive manufacturing step S1 is followed by a stripping step S2. This step separates the raw parts from the powder.
    The recovered powder can be reused, as described below with reference to FIG. 2. To this end, the recovered powder can undergo a sorting process in order to keep only the grains whose largest dimension is less than or equal to one given size (for example 150 microns, 80 microns or 60 microns).
    The stripping step consists in separating the raw parts from the powder in which they are embedded, and eliminating a maximum of powder carried by the raw part (for example in corners of the raw part, in the hairs of a part of the cosmetic product applicator). This step can be done manually. By manual, we mean that an operator must grab the raw parts, individually or in clusters, and remove the powder by stirring, blowing, and / or brushing.
    The depouding step can be carried out automatically, which is advantageous for the production of parts, in particular small parts of complex shapes such as cosmetic product applicators, on an industrial scale.
    Preferably, this operation is carried out in a powder coating booth in order to guarantee production on an industrial scale, ie, more than 200,000 pieces per week.
    Manual powder coating and a fortiori automated powder coating, can nevertheless leave residual powder, which makes all the more important the post-treatment of the raw parts, namely the raw cosmetic applicators obtained after the powder coating.
    Indeed, the Applicant has found that for the production of cosmetic product applicators, in particular intended for the application of a cosmetic product close to the eyes, it was not only necessary to separate the applicators of raw cosmetic products thus obtained from the powder, but that it was also important to guarantee the total absence of grains detached from the applicator (for example retained in its hairs) or liable to detach during use, and the largest dimension of which is greater at a given size likely to cause eye irritation. The following post-treatment aims at the total elimination of these grains. Typically, post-processing aims to remove all particles larger than 500 microns. Indeed, particles of dimensions greater than the dimensions of the initial powder grains can be generated during additive manufacturing, for example in the event of incomplete sintering of certain grains.
    Sandblasting (S4)
    Sandblasting is a known technique for cleaning a surface, which uses an abrasive sprayed at high speed using compressed gas (usually air) through a nozzle on the surface to be cleaned.
    However, the sanding of cosmetic product applicators requires the implementation of optimized parameters, due to the small size of the applicators, the need to sand extremely fine elements (namely the hairs of the applicators) without destroying them, the advantage of sandblasting a large quantity of parts at the same time (for example from 300 to 10,000 parts), and the importance of detaching from the raw parts by sandblasting all the particles likely to come off when using the applicator.
    A pre-blowing step S3 can precede the blasting step S4, and will be detailed with reference to FIG. 2.
    The blasting step S4 makes it possible in particular to remove the grains of partially sintered powder. Sandblasting is carried out in a sandblasting machine comprising at least one nozzle projecting glass beads having a diameter of 45 to 90 microns. Sandblasting also provides the desired surface finish on cosmetic product applicators. Other abrasive media are possible, for example bicarbonate, or compressed fruit kernels.
    In addition to the nature and size of abrasive particles, the type of sandblasting machine, the injection pressure, the distance and the orientation of the nozzle with respect to the surface of the barrel, are important parameters for obtaining the desired results.
    For the processing of a large batch of duplicators (for example of the order of 3000 to 4000 pieces) the following parameters have been successfully determined. Sandblasting is carried out in a rotary barrel blaster. The barrel chosen has a diameter of 500 mm. The barrel rotates at 3 revolutions per minute to ensure the mixing of the parts. Sanding can last 35 to 45 minutes, for example 40 minutes. The balls are injected under an air pressure of 2.5 bars.
    Those skilled in the art will obviously understand that the invention is not limited to these precise parameters, given by way of example.
    Stirring can be improved by using a second nozzle, blowing laterally into the barrel and / or lifting the parts relative to the surface of the barrel.
    Ionizing blow (S5)
    The process comprises, after the blasting step S4, an ionizing blowing step S5. Indeed, sanding can leave particles lodged in the hairs or other interstices of the cosmetic product applicator. The particles are essentially particles of the material constituting the applicator of cosmetic product, for example of PA11, but can also be particles of abrasive used for the sanding step S4.
    Ionization generally involves removing or adding charges to an atom or a molecule. Thus, ionization systems commonly called ionizers, produce ions which are charged atoms. Ionizers come in different forms. The most common form is a bar. The ionization bar must be located near the support to be ionized, typically within 50 mm. The Applicant has identified that the implementation of an ionizing blowing step is particularly relevant in an additive manufacturing process for a cosmetic product applicator. Indeed, in ionizing blast cleaning, ionization eliminates the effects of static electricity carried by the cosmetic product applicator. The air flow from the blowing separates the residual particles from the applicator, on the surface of which they are no longer retained by static electricity. The particles thus separated from the applicator are sucked out of the ionizing blowing chamber.
    The ionizing blowing can be carried out in a barrel or drum identical to the sandblasting barrel, or even in the same barrel as that used for the sandblasting step S4. The barrel can thus have the dimensional characteristics and the rotational speed mentioned for the sanding step S4.
    For the ionizing blowing step S5, the device advantageously comprises two ionization systems, for example two ionization bars. A bar is positioned inside the barrel (or other enclosure) and a bar placed outside.
    The following blowing parameters can be used successfully. The ionizing blowing can be carried out under a pressure of 4 bars. The ionizing blowing step S5 can last 30 to 40 minutes.
    The ionizing blowing step S5 can be carried out in batches of 300 to 10,000 pieces for example, in particular from 3000 to 4000 cosmetic product applicators.
    Obviously, similar parameters can be used successfully. For example and in a nonlimiting manner, the blowing pressure can be 3 to 5 bars, the blowing time can be significantly reduced, and for example be of the order of 15 minutes or less.
    Following ionizing blowing, cosmetic product applicators which do not have the drawbacks known in the prior art (unsatisfactory surface finish, potential presence of particles irritating to the eye) can be obtained.
    FIG. 2 represents, in a similar manner to FIG. 1, a method of manufacturing a cosmetic product applicator, this method being in accordance with an embodiment of the invention comprising the method of FIG. 1 and additional steps. The additional steps presented below relate on the one hand to a preliminary step of preparation or conditioning of the powder before the additive manufacturing step (step of conditioning the powder S0), and on the other hand to post-treatment steps making it possible to guarantee even more certain that the applicator obtained at the end of the process has the desired characteristics, and in particular the absence of particles which are detached or liable to come off during use.
    The optional steps described below can vary the optimal parameters for carrying out the other steps, but they can be incorporated independently of each other in the process of FIG. 1.
    Powder conditioning (S0)
    In order to obtain the desired final surface finish, it is important that the powder used for the additive manufacturing step S1, for example PA 11 or PA 12, originally has adequate characteristics.
    The most important characteristic appears is the particle size of the powder used.
    Typically, the applicant has noted the importance of using a fine and homogeneous powder to avoid defects on the cosmetic product applicator as the final product of the process. The powder used should advantageously have only grains whose largest dimension is less than 150 microns. Advantageously, an even finer powder can be used, that is to say the largest grain size of which is less than 80 microns or 60 microns.
    The desired characteristics, in particular the particle size, can be guaranteed by the selection of a commercially available powder having these characteristics. However, for obvious cost reasons, it is advantageous to be able to use so-called used powder, that is to say having already been used during an additive manufacturing step S1. In particular, part of the powder recovered during the depouding step S2 can be reused for a next cycle (or a batch) of manufacturing cosmetic product duplicators.
    The used powder may have been altered, compared to the new powder, during additive manufacturing, even if this powder is not linked to the raw part. The grains of powder could have been deformed by heat, glued, or partially sintered.
    In order to guarantee that the used powder can be reused without compromising the characteristics of the final product, the recovered used powder is calibrated by a suitable sorting or calibration process. In particular, screening of the used powder can be carried out. Several types of sieving can be envisaged in order to separate from the recovered powder the grains having a larger dimension greater than the desired maximum dimension. It is in particular possible to use screening by ultrasound, by micro-vibration and / or by blowing.
    The maximum desired dimension of the largest grain size can be, for example, 150 microns, or 80 microns, or 60 microns.
    Sorting or sieving allows the recovery of a calibrated used powder, which is suitable for reuse for the additive manufacturing of cosmetic product duplicators.
    In the S0 powder conditioning step, a mixture of new powder and calibrated used powder is thus produced. There is a tendency to use the used powder as much as possible. Satisfactory results have been obtained with a powder of PA 11, with a new powder / calibrated used powder ratio of between 100/0 and 50/50, in particular between 70/30 and 50/50, for example of the order 60/40.
    Pre-blowing (S3)
    The pre-blowing step S3 is carried out after the stripping step S2 and before the blasting step S4.
    The pre-blowing step aims to remove as many particles as possible after the powder coating, by subjecting the raw powdered parts to a flow of air under pressure. The pre-blowing step can advantageously be carried out in the barrel of the sandblasting machine which will be used for the sanding step S4. Pre-blowing can be carried out for 5 to 10 minutes, for example 7 minutes, with two nozzles blowing air at 2.5 bar.
    Washing / cleaning (S6)
    Additional cleaning can be carried out in a so-called washing or cleaning step S6.
    Cleaning is understood to mean any type of action allowing elimination of grains, particles, and other residual elements on the surface of cosmetic product applicators, or in the hairs or interstices of the latter. Washing corresponds to a type of cleaning using a washing product, aqueous or not.
    Washing in an appropriate solution can be carried out. Washing can be carried out on a reflux washing principle.
    The washing device used can have several sections, for example:
    • a so-called washing tank;
    • a rinsing tank;
    • an evaporation zone;
    • a drying area; and • a 4 ° C condensing coil to recover and recycle the detergent.
    The washing tank can include a rotating mesh basket, and / or submerged jets.
    In the washing and / or rinsing tanks, the parts can be subjected to ultrasound. The ultrasound used can have a frequency between 25 kHz and 45 kHz.
    Washing can in particular be carried out in a 50% solution of isopropyl alcohol or preferably in a chemical solution of fluoroketone. This solution has good effectiveness in eliminating residual sanding beads, and more generally in eliminating particles of dimensions less than 80 microns, without altering the mechanical properties of cosmetic product applicators.
    One can also consider, additionally or alternatively, sieving cosmetic product applicators under micro-vibration and / or blowing. This also has the advantage of being carried out in a dry environment.
    Qualification (S7)
    An S7 qualification step can ensure that the cosmetic product applicators obtained at the end of the actual manufacturing process meet certain qualitative criteria.
    In particular, the qualification stage can make it possible to ensure the absence of potentially irritating particles in the finished products.
    The qualification step can be carried out periodically during production, at regular or random intervals, or more preferably by random sampling of a determined number of cosmetic product duplicators in each batch of parts. For example, a batch can consist of a set of 10,000 to 100,000 pieces, and from each batch can be taken from 8 to 100 pieces.
    During the qualification stage, it can be ensured that none of the parts removed contain particles, detached or liable to come off during use, the largest dimension of which is greater than 500 microns (or greater than another predefined dimension).
    It can also be checked the number of particles, detached or liable to detach during use, of smaller size. For example, it is possible to check the number of particles whose largest dimension is between 150 microns and 500 microns. For example, the qualification step can allow a predefined maximum number of such particles (not critical for the consumer) for a given quantity of duplicators to be present (for example 7 particles for a sample of 32 applicators in a batch of 10,000 to 100,000 pieces or even 10 particles for a sample of 50 pieces from a set of more than 500,000 pieces).
    In the event of non-compliance detected during the qualification stage, the lot concerned may be rejected and destroyed. Measures to verify the process and / or correct the manufacturing parameters can be taken.
    The invention thus proposes a manufacturing process on an industrial scale, by additive manufacturing, of a cosmetic product applicator comprising a grip part and an application part. This manufacturing process guarantees the absence of loose particles or particles which may detach, in particular from the application part, which may include bristles or teeth for the retention of cosmetic product. This is important for applicators of the mascara brush type, or more generally for applicators intended for applying a cosmetic product close to the eyes. The process thus guarantees the absence of particles of dimensions greater than a given dimension (for example 500 microns). The method can also make it possible to guarantee a maximum number of particles in certain size ranges (for example between 150 microns and 500 microns).
    The manufacturing process proposed in the invention allows this by considering manufacturing as a succession of steps not limited to additive synthesis, but comprising a pretreatment or conditioning of the material used, as well as suitable post-processing steps.
    权利要求:
    Claims (11)
    [1" id="c-fr-0001]
    1. Method for manufacturing a cosmetic product applicator comprising a gripping part and an application part comprising bristles or teeth, the gripping part and the application part being formed in one piece, characterized in that the method includes an additive manufacturing step (S1) by sintering a powder of a plastic material followed by a depouding step (S2) and a post-treatment for the removal of loose particles from said applicator of cosmetic or partially sintered products, the post-treatment comprising the steps of:
    - sandblasting (S4); and
    - ionizing blowing (S5).
    [2" id="c-fr-0002]
    2. The manufacturing method according to claim 1, wherein the post-treatment further comprises a final washing step (S6), preferably in a non-aqueous solvent.
    [3" id="c-fr-0003]
    3. The manufacturing method according to claim 1 or claim 2, wherein the plastic material is a polyamide, preferably an aliphatic polyamide, for example polyamide 11.
    [4" id="c-fr-0004]
    4. The manufacturing method according to claim 3, comprising before the additive manufacturing step (S1), a step for conditioning the polyamide powder (S0) comprising:
    - the supply of new powder having only grains whose largest dimension is less than or equal to 150 microns;
    - the supply of so-called used powder, having already been used in an additive manufacturing step, and the calibration of said used powder so that it only has grains whose largest dimension is less than or equal to 150 microns;
    - the mixture of new powder and used powder calibrated according to a new powder / used powder ratio between 70/30 and 50/50, preferably of the order of 60/40.
    [5" id="c-fr-0005]
    5. Manufacturing process according to one of the preceding claims, in which the additive manufacturing (S1) comprises a powder bed fusion by laser.
    [6" id="c-fr-0006]
    6. Manufacturing process according to one of the preceding claims, comprising a pre-blowing step (S3) prior to the sandblasting step.
    [7" id="c-fr-0007]
    7. The manufacturing method according to one of the preceding claims, wherein the sandblasting (S4) is carried out by microbeading with glass beads of diameter between 45 microns and 90 microns.
    [8" id="c-fr-0008]
    8. Manufacturing process according to one of the preceding claims, in which the sandblasting (S4) is carried out in a rotary drum comprising two sandblasting nozzles.
    [9" id="c-fr-0009]
    9. The manufacturing method according to one of the preceding claims, wherein the ionizing blowing (S5) is carried out in a rotary drum comprising an internal ionization bar and an external ionization bar.
    [10" id="c-fr-0010]
    10. The manufacturing method according to one of the preceding claims, in which the blasting steps (S4) and ionizing blowing steps (S5) are carried out in batches of 300 to 10,000 cosmetic product applicators.
    [11" id="c-fr-0011]
    11. Method for producing cosmetic product duplicators comprising a manufacturing method according to one of the preceding claims, characterized in that it also comprises a qualification step (S7) comprising the determination, in a batch of a predetermined number cosmetic product duplicators, of the number of loose or partially sintered particles of larger dimension greater than 500 microns, and, if said number of particles is not zero, the modification of at least one parameter of a post-treatment step , then the succession of such manufacturing processes and qualification steps (S7) until said number of 5 particles of larger dimension greater than 500 microns is zero.
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    同族专利:
    公开号 | 公开日
    KR20200109337A|2020-09-22|
    FR3076759B1|2020-02-14|
    WO2019138180A1|2019-07-18|
    EP3740374B1|2021-09-29|
    CN111801217A|2020-10-20|
    US11267198B2|2022-03-08|
    US20200406536A1|2020-12-31|
    EP3740374A1|2020-11-25|
    JP2021514213A|2021-06-10|
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    法律状态:
    2019-01-29| PLFP| Fee payment|Year of fee payment: 2 |
    2019-07-19| PLSC| Publication of the preliminary search report|Effective date: 20190719 |
    2020-01-29| PLFP| Fee payment|Year of fee payment: 3 |
    2021-01-27| PLFP| Fee payment|Year of fee payment: 4 |
    2022-01-20| PLFP| Fee payment|Year of fee payment: 5 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1850296|2018-01-15|
    FR1850296A|FR3076759B1|2018-01-15|2018-01-15|METHOD FOR MANUFACTURING A COSMETIC APPLICATOR BY ADDITIVE MANUFACTURING|FR1850296A| FR3076759B1|2018-01-15|2018-01-15|METHOD FOR MANUFACTURING A COSMETIC APPLICATOR BY ADDITIVE MANUFACTURING|
    KR1020207023119A| KR20200109337A|2018-01-15|2019-01-08|Manufacturing method of cosmetic applicator by additive manufacturing|
    US16/962,148| US11267198B2|2018-01-15|2019-01-08|Method for manufacturing a cosmetic product applicator by additive manufacturing|
    PCT/FR2019/050031| WO2019138180A1|2018-01-15|2019-01-08|Method for manufacturing a cosmetic product applicator by additive manufacturing|
    CN201980008398.4A| CN111801217A|2018-01-15|2019-01-08|Method of manufacturing a cosmetic applicator by additive manufacturing|
    JP2020538972A| JP2021514213A|2018-01-15|2019-01-08|A method of manufacturing an applicator for cosmetics by laminating modeling|
    EP19703157.8A| EP3740374B1|2018-01-15|2019-01-08|Method for manufacturing a cosmetic product applicator by additive manufacturing|
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