CN117796615A

CN117796615A - Brush with brush body

Info

Publication number: CN117796615A
Application number: CN202311681573.0A
Authority: CN
Inventors: 金相润; 金世邻; 金京南; 田相勋
Original assignee: Amorepacific Corp
Current assignee: Amorepacific Corp
Priority date: 2019-09-09
Filing date: 2020-08-04
Publication date: 2024-04-02
Also published as: KR20210030530A; CN112451422A

Abstract

The invention relates to a brush comprising: a handle portion; a holding part coupled to one end of the handle part and having an elastic body therein; and bristles coupled to one end of the holding part.

Description

Brush with brush body

The application is that the application date is 08 month 04 in 2020, and the application number is: 202010771895.4 and filed application entitled "cosmetic composition, cosmetic, and brush".

Technical Field

The present invention relates to a cosmetic composition having a variable viscosity and a cosmetic comprising the same.

Background

Cosmetics are used as products for the human body to increase charm and make appearance beautiful by cleaning and beautifying the human body, or to maintain or improve the health of skin and hair with little influence on the human body.

In general, cosmetics can be prepared by mixing cosmetic compositions of different formulations using an emulsifier such as a surfactant, and can be classified into water-in-oil (W/O) and oil-in-water (O/W) cosmetic compositions according to the combined structure of oil phase raw materials and aqueous phase raw materials.

The water-in-oil type cosmetic composition combines an oil phase raw material to the outside of an aqueous phase raw material. The water-in-oil cosmetic composition has a high oily feel, and is slow in skin absorption and heavy in use, but has an advantage of high persistence compared with an oil-in-water cosmetic composition. Therefore, in the case where a continuous cosmetic is required, a water-in-oil type cosmetic composition is used for preparation in order to improve the water resistance to sweat or water.

In order to overcome the disadvantages of heavy feeling in use and having a sticky feel, the water-in-oil type cosmetic composition is generally prepared by reducing the viscosity of the contents. When such a low-viscosity water-in-oil product is stored in a container for a long period of time during the circulation, the water phase raw material of the inner phase and the oil phase raw material of the outer phase are separated from each other, and therefore, there is an inconvenience in that a user needs to shake the container to mix the separated water phase raw material and oil phase raw material for use.

In addition, when the viscosity of the water-in-oil type cosmetic composition is high, there is an inconvenience as follows: for example, in order to use a cosmetic composition of a cream preparation, a separate tool for removing a high-viscosity cream such as a spatula is used, or directly removed by hand.

In order to solve such a problem, a cosmetic has been developed in which a cosmetic composition is contained in a container having a discharge member for discharging the cosmetic composition.

Korean laid-open patent No. 2015-0108333 is a cosmetic product comprising a rubber discharge pad having discharge ports distributed in a radial shape, so that the degree of discharge of the contents can be appropriately adjusted when the contents are used, thereby facilitating the use. However, if a large pressure is applied to the rubber discharge pad, the contents may be excessively discharged. In addition, when the content discharged to the rubber discharge pad remains on the surface of the rubber discharge pad, there is a problem in that the appearance is not beautiful.

In view of this, there is an urgent need for developing cosmetics that can conveniently use cosmetic compositions having high viscosity.

Prior art literature

Patent literature

(patent document 1) Korean laid-open patent No. 2015-0108333

Disclosure of Invention

In order to solve the problems, the present inventors have prepared a cosmetic composition of a high viscosity cream formulation having a structure in which viscosity is reduced by temperature or pressure, and a cosmetic in which the cosmetic composition is contained in a container having a double screen. The cosmetic composition can be stably stored through the double screen as a high-viscosity cream formulation. In addition, it was confirmed that the cosmetic composition was easily discharged through the double screen while the viscosity was reduced by applying a temperature or pressure change from the outside for use, thereby facilitating use.

It is therefore an object of the present invention to provide a cosmetic composition having a variable viscosity.

Further, the present invention aims to provide a cosmetic comprising the cosmetic composition having a variable viscosity.

Further, an object of the present invention is to provide a brush for the cosmetic composition having a variable viscosity or for a cosmetic containing the cosmetic having a variable viscosity.

In order to achieve the object, the present invention provides a cosmetic composition, which is a water-in-oil (W/O) cosmetic composition comprising: an aqueous phase (Water Part) comprising an aqueous phase thickener; and an Oil phase portion (Oil Part) containing an Oil phase portion thickener.

In addition, the present invention provides a cosmetic comprising a plurality of screens having different pore sizes overlapped with each other, and discharging the cosmetic composition through the plurality of screens.

In addition, the present invention provides a brush comprising: a handle portion; a holding part coupled to one end of the handle part and having an elastic body therein; and bristles coupled to one end of the holding part.

The cosmetic composition having a variable viscosity according to the present invention has excellent spreadability and moisture retention as a structure having a thickened inner phase and a thickened outer phase surrounding the inner phase. In addition, the cosmetic composition having a variable viscosity may have an excellent feel in use because the thickening structures of the inner and outer phases are broken and the viscosity is reduced due to temperature or pressure.

In addition, the cosmetic according to the present invention comprises the cosmetic composition having a variable viscosity, and the cosmetic composition is contained in a container to which a multiple screen is attached. The cosmetic composition can be uniformly discharged through the multiple screens under a change in temperature or pressure, and thus the amount adjustment is easy.

In addition, when pressure is applied to the multiple screens of the cosmetics, the thickening structures of the inner and outer phases of the cosmetic composition having the variable viscosity are broken while the viscosity is reduced, so that the cosmetic composition can be better discharged through the multiple screens, and thus the cosmetic composition having the variable viscosity can be suitably used for cosmetic applications including containers formed with the multiple screens.

In addition, since the multiple screens are attached to the cosmetics, the cosmetic composition contained in the container is prevented from flowing down or overflowing, or from exuding (scattering) in the oil, and the cosmetic composition can be stably stored.

In addition, in the multiple screen, the screen contacting the cosmetic container may have an uneven appearance due to the cosmetic being applied thereto, but the screen located outside the multiple screen may have an even appearance even if the cosmetic is used a plurality of times, so that a clean state can be maintained.

In addition, the brush according to the present invention can discharge the cosmetic composition by applying pressure to the multiple screen, and thus can be suitably used for cosmetic applications in which the cosmetic composition is contained in a container to which the multiple screen is attached.

In addition, the bristles of the brush have a circular or polygonal cross-section, so that it is possible to minimize the occurrence of bristle marks on the skin when the cosmetic composition is applied by the brush.

In addition, the brush includes an elastic body in the inside of the holding part, which is coupled between the bristles and the handle, so that the cosmetic composition contained in the cosmetic container including the double screen can be easily dipped and applied to the skin using the brush.

Drawings

Fig. 1a and 1b are schematic views showing the structure of a cosmetic composition according to an embodiment of the present invention and a schematic view showing the structure after the cosmetic composition is applied to an application surface, respectively.

Fig. 2 shows a part of a cosmetic according to an embodiment of the present invention and is an exploded view.

Fig. 3a is a photograph of a brush according to the present invention, fig. 3b is an exploded view of the brush, fig. 3c is a schematic view illustrating a tap with the brush, fig. 3d is a schematic view illustrating longitudinal and transverse working forms of the brush, and fig. 3e is a schematic view of bristles provided to the brush.

Fig. 4a is a photograph of a first screen and a second screen for preparing the dual screens used in example 1 and comparative examples 1 to 3, and fig. 4b is a photograph of a combination of the dual screens after putting the cosmetic composition into a container.

Fig. 5a is a photograph after the cosmetic composition prepared in example 1 was solidified at 30 c after being filled into a container at 60 c, fig. 5b is a photograph for a state in which external pressure is not applied to the solidified cosmetic composition in fig. 5a, and fig. 5c is a photograph for a state in which external pressure is applied to the solidified cosmetic composition.

Fig. 6 is a photograph showing the appearance of cosmetics respectively including the double screen and the single screen manufactured in example 1 and comparative example 4 after 5 uses.

(description of the reference numerals)

1: cosmetic products comprising a double screen; 10: a cosmetic composition; 11: a water phase part; 12: an oil phase portion; 20: a container; 30: a double screen; 31: a first screen; 32: a second screen; 31a, 32a: a frame member; 40: brushing; 41: a handle; 42: a holding section; 43: an elastomer; 44: and (3) brushing.

Detailed Description

Hereinafter, detailed descriptions will be made so that those having ordinary skill in the art to which the present invention pertains can easily implement the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

The term "thickening structure" as used in the present specification means a structure in a state where viscosity is increased by a thickener. For example, in the cosmetic composition according to the present invention, the oil phase part may have a thickening structure in which the viscosity is increased by the oil phase part thickener, and the water phase part may have a thickening structure in which the viscosity is increased by the water phase part thickener.

The term "tapping" used in the present specification means a behavior of pressing or beating a plurality of screens contacting with the surface of the cosmetic composition with the brush in order to cause the cosmetic composition to be applied to the brush, or a behavior of applying the cosmetic composition applied to the brush to the skin and beating.

Cosmetic composition

The present invention relates to a cosmetic composition having a characteristic that viscosity varies according to external energy such as temperature and/or pressure.

Referring to fig. 1a, the cosmetic composition 10 may be a water-in-oil (W/O) formulation comprising: an aqueous phase portion 11 containing an aqueous phase portion thickener; and an oil phase portion 12 containing an oil phase portion thickener.

In the water-in-oil cosmetic composition, the water phase portion 11 and the oil phase portion 12 may be thickened by a water phase portion thickener and an oil phase portion thickener, respectively, to enhance the moisturizing persistence.

In addition, the viscosity of both the aqueous phase thickener and the oil phase thickener is reduced by external energy, so that the fluidity of the cosmetic composition is improved. For example, when the peripheral temperature of the cosmetic composition increases or pressure is applied to the cosmetic composition, the structure thickened by the aqueous phase portion thickener and the oil phase portion thickener, respectively, is broken while the viscosity is reduced. The reduced viscosity cosmetic composition is improved in fluidity, and thus the cosmetic composition can be easily applied to the skin by being dipped in an applicator such as a brush or a puff, thereby improving the feeling of use.

Referring to fig. 1b, when the cosmetic composition is applied to a coating surface such as skin, the oil phase part 12 forms one layer on the coating surface, the water phase part 11 forms another layer thereon, and finally, a double layer is formed on the skin by the cosmetic composition. In a state where the cosmetic composition is applied to the skin in this form, the double layer can function to prevent evaporation of the moisture W in the skin to the outside while allowing the cosmetic composition component C to be well transferred into the skin.

In the present invention, the water-in-oil type cosmetic composition may contain an oil phase part, an aqueous phase part, a pigment, and other ingredients. For example, the other ingredients may also be referred to as additives, may be fragrances, and the like.

In the present invention, the oil phase portion may include an oil, an emulsifier, and an oil phase portion thickener (oil thickener).

The oil phase part may comprise 20 to 50 wt% based on the total weight of the cosmetic composition, and in particular, the content of the oil phase part may be 20 to 30 wt% and 40 to 50 wt% inclusive. If the content of the oil phase portion is less than 20 wt%, a water-in-oil type cosmetic composition may not be formed and spreadability may be poor, and if it is more than 50 wt%, the content of the oil phase portion is too high and a sense of use of many oils may be poor.

In the present invention, the oil phase part thickener thickens the oil phase part of the cosmetic composition to form a thickened structure, which may have a characteristic that the thickened structure is oleophilic and is broken by external energy such as temperature or pressure.

The oil phase thickener may contain one or more selected from the group consisting of polyethylene, siloxin, ozokerite, microcrystalline wax, carnauba wax, and stearyl alcohol, and preferably may be polyethylene.

The oil phase part thickener may be contained in an amount of 0.1 to 10 wt% based on the total weight of the cosmetic composition, and specifically, the oil phase part thickener may be contained in an amount of 0.1 to 1 wt% or more, or 2 to 4 wt% or less, 6 to 10 wt% or less. If the content of the oil phase thickener is less than 0.1 wt%, a thickened structure of the oil phase may not be formed, and if it is more than 10 wt%, the viscosity of the oil phase is too high, and the thickened structure may not be damaged by external energy such as temperature or pressure.

In the present invention, the aqueous phase portion as a solvent may contain water, a humectant, a preservative, an emulsion stabilizer, and an aqueous phase portion thickener.

The aqueous phase part may comprise 10 to 60 wt% based on the total weight of the cosmetic composition, and in particular, the content of the aqueous phase part may be 10 to 20 wt% and 45 to 60 wt% based on the total weight of the cosmetic composition. If the content of the water phase portion is less than 10 wt%, the feeling of use such as water-wet feeling or moisturizing feeling may be poor, and if it is more than 60 wt%, a water-in-oil type cosmetic composition may not be formed.

In the present invention, the aqueous phase part thickener thickens the aqueous phase part of the cosmetic composition to form a thickened structure, which may have a hydrophilic property and the thickened structure may be damaged by external energy such as temperature or pressure.

The aqueous phase thickener may contain one or more selected from the group consisting of agar (agar), ammonium acryloyldimethyl taurate/VP Copolymer (Ammonium Acryloyldimethyltaurate/VP Copolymer) and hydroxyethyl acrylate/sodium acryloyldimethyl taurate Copolymer (Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer), and preferably may be agar.

The aqueous phase portion thickener may comprise 0.01 wt% to 2 wt%, specifically, the content of the aqueous phase portion thickener may be 0.01 wt% or more, 0.05 wt% or more, or 0.1 wt% or more and 0.5 wt% or less, 1 wt% or less, or 2 wt% or less, based on the total weight of the cosmetic composition. If the content of the thickener for the aqueous phase part is less than 0.01 wt%, a thickened structure of the aqueous phase part may not be formed, and if it is more than 2 wt%, the viscosity of the aqueous phase part is too high, and the thickened structure may not be damaged by external energy such as temperature or pressure.

In the present invention, the pigment may be an inorganic-based pigment, and specifically, the pigment may contain one or more selected from the group consisting of iron oxide, titanium oxide, zinc oxide, polymethylsilsesquioxane, polymethylmethacrylate, talc, mica, silicon oxide, and aluminum oxide.

In addition, the pigment may be a solid powder pigment.

In addition, the pigment may be 5 to 30 wt% based on the total weight of the cosmetic composition, and specifically, the pigment may be contained in an amount of 5 to 15 wt% or more, or 18 to 22 wt% or less, 25 to 30 wt% or less. If the content of the pigment is less than 5 wt%, the color development or coverage may be reduced, and if it is more than 30 wt%, the formulation stability and the feel in use may be reduced.

In the present invention, the additive may be a thickener, a perfume, or the like. The thickener may function to further increase the viscosity of the overall cosmetic composition when the oil phase part and the water phase part are mixed.

In addition, the additive may be 0.1 wt% to 5.0 wt% based on the total weight of the cosmetic composition, and specifically, the content of the additive may be 0.1 wt% or more, 0.5 wt% or more, or 1 wt% or more and 3 wt% or less, 4 wt% or less, or 5 wt% or less.

In the present invention, the viscosity of the cosmetic composition may be 3,000cps to 100,000cps, and in particular, may be 3,000cps or more, 10,000cps or more, 20,000cps or more, or 30,000cps or more and 70,000cps or less, 80,000cps or less, or 100,000cps or less. If the viscosity of the cosmetic composition is less than 3,000cps, storage stability may be lowered, and if it is more than 100,000cps, use feeling may be poor.

The cosmetic composition has characteristics that vary depending on temperature or pressure, and in particular, becomes suitable viscosity for convenience of use, spreadability, and a good degree of use feeling due to temperature and pressure applied when a user uses the cosmetic composition.

For example, in the cosmetic composition, the viscosity change amount may be Δ30,000cps or more or Δ50,000cps or more when heated from 30 ℃ to 60 ℃. At this time, the viscosity of the cosmetic composition is reduced by heating. That is, it may mean that if the viscosity variation of the cosmetic composition upon heating is Δ55,000cps, the viscosity at 30 ℃ is 90,000cps, and the viscosity at 60 ℃ is 35,000cps.

In addition, in the cosmetic composition, the viscosity change amount may be Δ10,000cps or more or Δ15,000cps or more when pressurized to the extent of 2kgf at normal temperature. At this time, the viscosity of the cosmetic composition is reduced by pressurization. That is, if the viscosity change amount of the cosmetic composition at the time of pressurization is Δ15,000cps, the viscosity at normal temperature is 90,000cps, and at the time of pressurization of 2kfg at normal temperature, the viscosity is 75,000cps.

When heated or pressurized, the viscosity changes, so that the adhesive can be well adhered to hands or separate smearing parts to be convenient to use, and the adhesive has good smearing performance on skin. In addition, in the case where the cosmetic composition is contained in a cosmetic including a multiple screen as described later, the cosmetic composition can pass through the multiple screen well, and thus can be applied to a cosmetic composition for cosmetics including a multiple screen.

In the present invention, the cosmetic composition may be in a liquid, cream, semi-solid, solid or powder form.

Specifically, the cosmetic composition is not particularly limited, and may be, for example, one or more selected from the group consisting of foundation cream, make-up cream, eye makeup, blush, skin lotion, skin softener, toner, astringent, milk emulsion, moisturizing emulsion, nutritional emulsion, and massage cream.

Cosmetic product comprising multiple screens

The present invention relates to a cosmetic comprising a plurality of screens overlapping a plurality of screens having different pore sizes, and discharging the cosmetic composition through the plurality of screens.

Specifically, the cosmetic may include: a container having one surface open; the cosmetic composition is contained in the container; and multiple screens bonded to an open face of the vessel.

The screen mesh in contact with the cosmetic composition among the multiple screen mesh serves to block the cosmetic composition from flowing out to the outside, thereby improving storage stability. In addition, the screen located at the outermost side among the multiple screens is not in direct contact with the cosmetic composition, so that it is possible to minimize stains on the appearance and to minimize elongation due to good stretchability even if used a plurality of times, and thus it is possible to improve aesthetic feeling.

Hereinafter, the cosmetic according to the present invention will be described in more detail with a focus on a double screen as an example of the multiple screen.

The dual screen includes a first screen having different pore sizes in direct contact with the cosmetic composition and a second screen positioned on the first screen.

Dual screen

Referring to fig. 2, it may be that the cosmetic 1 including the double screen may include: a container 20 containing the cosmetic composition 10; and a double screen 30 coupled with the open upper portion of the container 20, and the double screen 30 includes: a first screen 31 connected to the cosmetic composition 10 contained in the container 20; and a second screen 32 laminated on the first screen 31.

The first screen 31 and the second screen 32 include frame members 31a and 32a for maintaining the shape of the screens, respectively. With the frame members 31a, 32a attached by ultrasonic welding, the first screen 31 and the second screen 32 may be combined and form the dual screen 30. The double screen 30 may be coupled in a form inserted into the container 20 or in a hinge coupling form, but is not limited thereto, as long as it is generally applicable to a cosmetic container.

In the present invention, the first screen may have a smaller pore size than the second screen. At this time, the Kong Yizhi is an empty space formed by the screen, and the hole size means the length of the longest axis of the hole.

The first screen is in contact with the cosmetic composition contained in the container, and prevents the cosmetic composition from flowing out or being discharged, thereby enabling stable storage.

In addition, the pore size of the first screen may be 0.01mm to 0.3mm, specifically, may be 0.01mm or more, 0.05mm or more, or 0.1mm or more and 0.2mm or less, 0.25mm or less, or 0.3mm or less. If the pore size of the first screen is less than 0.01mm, the cosmetic having high viscosity may be difficult to easily discharge, and if it is more than 0.3mm, storage stability may be lowered.

The second screen may be laminated on the first screen to function to uniformly discharge the cosmetic filtered by the first screen.

In addition, the pore size of the second screen may be 0.1mm to 2mm, specifically, may be 0.1mm or more, 0.5mm or more, or 0.7mm or more and 1.3mm or less, 1.5mm or less, or 2mm or less. If the hole size of the second screen is less than 0.1mm, it may be difficult to discharge the cosmetic to be inconvenient to use, and if it is more than 2mm, the cosmetic may overflow or be discharged when a certain pressure is applied to be difficult to stably store.

In addition, for convenience of use, the first screen and the second screen may be formed of a material having suitable stretchability.

In order to apply the cosmetic contained in the container to the skin, it is necessary to take the cosmetic with an applicator member. In this process, if an appropriate pressure is applied to the double screen using the applying part, the double screen is appropriately expanded and contracted, and the cosmetic composition contained in the container is discharged through the double screen while being sucked into the applying part.

Preferably, the dual screen may have a degree of stretchability of the dual screen to the bottom of the container when pressure is applied with the applicator member.

The first screen and the second screen may each include one or more selected from the group consisting of polyester, spandex, nylon, rubber, polyurethane, polyamide, polyene, polypropylene, and polyethylene, and preferably may be polyester.

The polyester has good durability and stretchability, and also has good compatibility with the cosmetic composition. For example, in the case of a screen including the spandex, as the number of uses increases, the size becomes excessively large compared to the original size of the screen, so that the appearance quality may be degraded.

In particular, in the case where the cosmetic including the double screen manufactured using 100% of polyester and the first screen and the second screen is applied, since the double screen has stretchability extending to the bottom of the container, it is easy to use, and even if it is used a plurality of times, it is possible to minimize the phenomenon that the appearance quality is deteriorated.

In addition, the second screen may be pleated. In the case where the second screen is pleated, stretchability can be further improved. In this case, the wrinkles may be formed in a wave pattern, a diagonal pattern, or the like, but are not limited as long as the wrinkles are formed in a pattern that can be formed on the screen.

Cosmetic forms

The cosmetic according to the present invention may be in the form of a container including a double screen mounted thereto and the cosmetic composition is loaded into the container and the double screen is coupled to the container.

The cosmetic according to the present invention may be in a state of including the cosmetic composition in a container mounted with the double screen, particularly, under the double screen.

The cosmetics according to the present invention may be in the form of powder case (face), can (Jar), airless (air), blow-molded (blow), tube, bottle (Bottle), etc., but are not limited thereto.

The cosmetic according to the present invention can suitably control the size of the discharge hole of the double screen and has stretchability, so that the residual amount of the cosmetic composition can be maximally used. In addition, except for the holes of the double screen, it is sealed from the outside, so that it is always perceived as if a new product was used when the product was used.

Smearing part

The cosmetic product including the double screen according to the present invention may further include an application member capable of applying the cosmetic composition included in the cosmetic product to the skin.

In the present invention, the applicator may be one or more selected from the group consisting of a brush and a puff, but is not limited as long as the applicator can pick up the cosmetic composition discharged through the double screen and apply the cosmetic composition to the skin.

Brush with brush body

The present invention also relates to a brush as an application member suitable for cosmetics including the multiple screen as described above.

Referring to fig. 3a and 3b, the brush 40 according to the present invention may include: a handle portion 41; a holding portion 42 coupled to one end of the handle portion 41 and having an elastic body 43 incorporated therein; and bristles 44 coupled to one end of the holding portion 42.

The handle 41 may be used as a portion to be held by a user in a hand, and may perform a cosmetic application operation to the skin.

The material and shape of the handle portion 41 are not particularly limited, and may be any handle material and shape of a conventional cosmetic brush.

The holding portion 42 is a member connecting the handle portion 41 and the brush 44. The handle portion 41 and the bristles 44 may be respectively inserted into both ends of the holding portion 42. In addition, the elastic body 43 may not be included in the inside of the holding part 42, and both ends of the elastic body 43 may be directly connected to the handle part 42 and the bristles 44.

The holding portion 42 may function as a guard for the elastic body 43 and as a restriction for the position of the elastic body 43. Without the holding portion 42, the movement of the brush 40 becomes too free due to the elastic body 43, possibly resulting in inconvenience of use.

Referring to fig. 3c, when the brush 40 is tapped, the face that the brush 40 directly contacts may be the second screen 32 in the dual screen 30.

In addition, when tapped, the elastic body 43 included in the inside of the holding part 42 imparts proper elasticity to enhance the feeling of use when the brush 40 is used, and when the cosmetic is applied to the skin, the bristles 44 can be moved to match the curvature of the skin, so that the cosmetic can be applied without a gap.

In addition, the elastic body 43 may have an elasticity of 0.01cm to 3.0cm for long deformation when a force of 0.1kgf to 3kgf is applied. The force of 0.1kgf to 3kgf may be a force by which a general cosmetic user presses the dual screen 30 with the brush 40 in order to make the cosmetic composition adhere to the bristles 44, or may be a force applied in order to apply the cosmetic composition adhered to the bristles 44 to the skin.

When the force applied to the brush 40 is applied to the elastic body 43, if the length of deformation of the elastic body 43 is less than 0.01cm, it means that the elastic force is insufficient, and thus the impact cannot be absorbed when tapped, so that inconvenience may be felt (feeling hard), and inconvenience may be felt when applying the cosmetic to a face having a curvature because it is not curved. In addition, if the length of the deformation of the elastic body 43 is more than 3cm, it means that the elastic force is excessively large, and thus it is not easy to control the brush itself, so that it may be difficult to use the brush.

The elastic body 43 may be a spring, but is not limited as long as it has the elasticity as described above.

Referring to fig. 3d, the brush may have elasticity to shrink 0.1cm to 3cm in the longitudinal direction when a force as described above is applied. By having such elasticity, the brush can absorb impact upon tapping without inconveniencing the facial skin reached by the brush and spreading the applied cosmetic composition softly.

In addition, the brush may be moved by 0.01 ° to 3 ° in the lateral direction, specifically, may be moved by 0.01 ° or more, 0.05 ° or more, or 0.1 ° or more and 2.0 ° or less, 2.5 ° or less, or 3 ° or less. In this case, the lateral direction means the entire 360 °, and the angle is an angle with the vertical axis as the center. If the movable angle in the lateral direction is less than 0.01 °, it may be difficult to spread the cosmetic composition uniformly and apply it to the skin having a curvature. In addition, if the angle is greater than 3 °, the movement of the brush may be too large to control the brush.

Referring to fig. 3e, the bristles may be circular in cross-section, or the bristles may be polygonal bristles (not shown) having a polygonal cross-section. That is, the bristles are not flat but sharp-ended bristles, but may have a wide cross-sectional area. The polygon may be a quadrilateral, pentagon, hexagon, etc.

The diameter of the bristles is 0.01mm to 0.5mm, the length of the bristles is 0.3cm to 4.0cm, and the number of the bristles is 30,000 pieces/cm ² Up to 70,000 pieces/cm ² 。

In contrast to conventional flat bristles, the rounded or polygonal bristles can be densely formed without gaps between bristles, so that no brush marks are left and gently applied to the skin when the cosmetic composition is applied.

In addition, since the bristles have the bristle diameter, the bristle length, and the number of bristles as defined above, they are compact and have a wide area contacting the skin compared to conventional flat bristles, are easy to use, and can be gently applied to the skin without leaving brush marks when applying the cosmetic composition.

The diameter of the bristles may be 0.01mm to 0.5mm, and specifically may be 0.01mm or more, 0.05mm or more, or 0.1mm or more and 0.4mm or less, 0.45mm or less, or 0.5mm or less. If the hair diameter is less than 0.01mm, it may not be easily controlled at the time of use, and if it is more than 0.5mm, brush marks may be left on the skin at the time of applying the cosmetic composition.

The hair length may be 0.3cm to 4.0cm, specifically, may be 0.3cm or more, 0.5cm or more, or 1cm or more and 3.5mm or less, or 4.0cm or less. If the hair length is less than 0.3cm, the area applied to the skin is small and may cause inconvenience in use, and if it is more than 4.0cm, the hair length is too long and it may be difficult to control bristles when applying the skin.

The Mao Geshu can be 30,000 pieces/cm ² Up to 70,000 pieces/cm ² Specifically, 30,000 pieces/cm ² Above, 35,000 pieces/cm ² Above or 40,000/cm ² Above and 60,000/cm ² Below 65,000 pieces/cm ² Below or 70,000 pieces/cm ² The following is given. If the Mao Geshu is less than 30,000 pieces/cm ² Brush marks may be left when the bristles are not dense and applied to the skin, if more than 70,000/cm ² The bristles are too dense and the cosmetic composition may be thickly applied to the skin.

In addition, the puff is used for making up as follows: the cosmetic material is spread uniformly without caking, applied to the skin with a dense feel, and touched in a manner that satisfies the feel of the perceived use, and the cosmetic material may be a cosmetic powder puff commonly used, or a finger insertion tape may be formed to enhance the feel of use.

In addition, the puff may include one or more selected from the group consisting of cotton, sponge, foamed NBR (nitrile-butadiene rubber), orange spinel (rubicelle), polyester, and nylon. Preferably, the material of the puff may include orange spinel in consideration of compatibility with the high-viscosity cosmetic composition discharged through the double screen as described above.

The brush or the puff as described above may be used for cosmetics including the double screen according to the present invention, but is not limited thereto, and may be widely applied to various forms of cosmetics.

In the following, preferred embodiments are provided for the purpose of facilitating understanding of the present invention, but the following embodiments are merely illustrative of the present invention, and various changes and modifications may be made within the scope and technical spirit of the present invention, and it is apparent to those skilled in the art that such changes and modifications also fall within the scope of the appended claims.

Example 1 and comparative examples 1 to 3

(1) Preparation of cosmetic compositions

Table 1 below shows the compositions of cosmetic compositions for preparation, according to which the cosmetic compositions were prepared.

The oil phase (oil thickener/oil/emulsifier) is heated at 90 to 95 ℃ while the oil thickener is dissolved, the thickener is added and dispersed, and then the solid powder pigment is added and dispersed and emulsified.

All the humectant/preservative/emulsion stabilizer/water phase thickener are put into a solvent, namely purified water, and heated at a temperature of 90-95 ℃ to dissolve the water phase thickener, thereby preparing a water phase.

Thereafter, the emulsified oil phase and water phase are mixed, and then fragrance, thickener and solid powder pigment are added to prepare a cosmetic composition for a cream preparation.

TABLE 1

(2) Cosmetic manufacture comprising a double screen

In order to manufacture cosmetics including the dual screen, after the cosmetic composition is put into a conventional air cushion type container, the dual screen is coupled to an upper portion of the container and fixed.

Fig. 4a is a photograph of a first screen and a second screen for manufacturing the dual screens used in example 1 and comparative examples 1 to 3, and fig. 4b is a photograph of a combination of the dual screens after putting the cosmetic composition into a container.

Referring to fig. 4a, the first screen 31 and the second screen 32 are made of 100% polyester yarns, and the first screen 31 and the second screen 32 have the same size and shape.

However, the size of the holes formed in the first screen 31 was 0.15mm, and the size of the holes formed in the second screen 32 was 1mm. The second screen 32 exhibits a pleated curved shape.

After the first screen 31 and the second screen 32 are overlapped, the frame members 31a, 32a at the edges of the first screen 31 and the second screen 32 are ultrasonically welded to manufacture a double screen.

Referring to fig. 4b, it can be seen that cosmetics are manufactured by combining the double screen in a container containing the cosmetic composition.

Comparative example 4

A cosmetic was manufactured by the same method as in example 1, except that the first screen was used as a single screen instead of a double screen.

Experimental example 1: viscosity measurement

The viscosities based on temperature and pressure were measured for the cosmetics prepared in example 1 and comparative examples 1 to 3, respectively.

(1) Viscosity based on temperature

The viscosities at temperatures of 30 ° and 60 ° were measured for the cosmetics prepared in example 1 and comparative examples 1 to 3, respectively. At this time, the viscosity measuring apparatus measures the viscosity using a Bowler-Nordheim (Brookfield) DV-III ULTRA under the conditions of spindle number 29 (spindle), speed 5 revolutions (rpm) and 2 minutes (min), and the results are shown in Table 2 below.

TABLE 2

Temperature (temperature)	Examples	Comparative example 1	Comparative example 2	Comparative example 3
					30℃	90,000cps	35,000cps	37,000cps	87,000cps
60℃	35,000cps	30,000cps	31,000cps	34,000cps

Referring to table 2, it is understood that the viscosity difference based on temperature is large in example 1 as compared with comparative examples 1 to 3.

(2) Viscosity based on pressure

For the cosmetics prepared in example 1 and comparative examples 1 to 3, respectively, pressures of 2kgf and 4kgf were applied using a durometer, and viscosities based on the pressures were measured. In this case, the hardness was measured at 30℃using ASKER type F or ASKER rubber type F, and the results are shown in Table 3 below.

TABLE 3

Pressure of	Examples	Comparative example 1	Comparative example 2	Comparative example 3
					2kgf	75,000cps	35,000cps	36,000cps	74,000cps
4kgf	60,000cps	34,000cps	34,000cps	62,000cps

Referring to table 3, it is understood that the viscosity difference based on pressure is large in example 1 as compared with comparative examples 1 to 3.

In addition, specifically, the cosmetic prepared in example 1 was solidified at 30 ℃ after being filled into a container at 60 ℃ and the change in appearance due to external pressure was observed.

Referring to fig. 5a, the cosmetic composition of example 1 is maintained in a state of solidification at 30 ℃.

Referring to fig. 5b, it can be seen that in the case where external pressure is not applied to the cosmetic composition of fig. 3a, the shape of the solidified state is maintained and the viscosity is maintained even though the cosmetic composition is extracted by a Spatula (Spatula).

Referring to fig. 5c, it is apparent that the cosmetic composition filled in the container is damaged in shape and reduced in viscosity when an external pressure (2 kgf) is applied.

Experimental example 2: storage stability, discharge force and appearance quality measurement

The storage stability and the discharge force of the cosmetics based on the mesh were measured for the cosmetics manufactured in example 1 and comparative example 4, respectively.

(1) Storage stability test of cosmetics comprising double Screen

The cosmetic manufactured in example 1 and including the double screen was stored obliquely at 55℃for 3 days, and as a result, it was confirmed that the cosmetic composition was stably stored by the double screen.

It was confirmed that the cosmetic was discharged through the double screen only when a certain pressure, for example, 2kgf was applied.

(2) Determination of the discharge force of a cosmetic product comprising a double screen

The results of the measurement of the discharge amount of the cream formulation cosmetic after the pore size of the first screen was adjusted and the pressure of 2kgf was applied to the cosmetic including the double screen manufactured in example 1 are shown in table 4 below. At this time, in example 1, the pore size of the first screen was 0.15mm.

TABLE 4

Referring to table 4, it was confirmed that the discharge amount of the cosmetic material can be adjusted based on the pore size of the first screen in the double screen.

(3) Appearance quality measurement

Referring to fig. 6, comparative example 4 including a single screen decreased in appearance quality as the number of uses increased, but example 1 including a double screen maintained the appearance quality uniformly even though the number of uses increased.

Claims

1. A brush, comprising:

a handle portion;

a holding part coupled to one end of the handle part and having an elastic body therein; and

and a bristle coupled to one end of the holding part.

2. The brush of claim 1, wherein,

the bristles are provided withThe cross section is round or polygonal, the bristle has a bristle diameter of 0.01mm to 0.5mm, the bristle has a bristle length of 0.3cm to 4.0cm, and the bristle has a bristle number of 30,000 bristles/cm ² Up to 70,000 pieces/cm ² 。

3. The brush of claim 1, wherein,

the elastic body is a spring and has an elasticity of 0.01cm to 3.0cm for long deformation when a force of 0.1kgf to 3kgf is applied.