Radial gradient solid cosmetic and method for manufacturing the same

Abstract

To provide cosmetics with excellent aesthetics.SOLUTION: The above problem can be solved by a radial gradation solid cosmetic containing two or more types of particles of different colors according to the present invention, each of the particles having an average particle size of 0.2 mm or more, and at least one particle has a concentration gradient direction radial from a central point.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a solid cosmetic having a radial gradient and a method for producing the same.

Background Art

[0002] Cosmetics have been developed that have a colorful and aesthetic beauty by coloring the cosmetics in multiple colors. Furthermore, the aesthetic property is also improved by making the boundaries between multiple colors into a gradient. For example, Patent Document 1 discloses an oil-based solid cosmetic formed so as to change in a gradient manner from the color of the first cosmetic to the color of the second cosmetic. Also, Patent Document 2 discloses a multicolor solid cosmetic having a gradient pattern.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the gradients of these cosmetics are gradients from one color to another color, and the development of cosmetics having even more excellent aesthetic properties has been expected. An object of the present invention is to provide a cosmetic having excellent aesthetic properties.

Means for Solving the Problems

[0005] [[ID=,47]] As a result of earnestly researching cosmetics having excellent aesthetic properties, the present inventor has surprisingly found that a solid cosmetic having a radial gradient of particle shape exhibits excellent aesthetic properties. The present invention is based on such findings. Therefore, the present invention is [1] A radial gradient solid cosmetic comprising two or more particles of different colors, wherein each of the particles has an average particle diameter of 0.2 mm or more, and at least one of the particles has a direction with a density gradient radiating from a central point. [2] The radial gradient solid cosmetic described in [1], wherein the content of each particle contained in the radial gradient solid cosmetic is the same or different. [3] The radial gradient solid cosmetic according to [1] or [2], wherein the shape of the radial gradient solid cosmetic when viewed from above is selected from the group consisting of circles, ovals, squares, rectangles, and triangles. [4] A method for producing a radial gradient solid cosmetic, comprising: (1) granulating at least two different colored particles having an average particle diameter of 0.2 mm or more; (2) filling a filling unit having two or more sections with the particles, wherein one or more types of particles are filled into a first section containing the center point of the filling unit, and one or more types of particles are filled into a second section surrounding the outside of the first section of the filling unit; (3) moving the particles from the filling unit to a cosmetic container without a partition between the first and second sections; (4) inserting a stirring rod substantially perpendicularly into the particles in the cosmetic container and rotating it in a circular motion around the center point to create a gradient at the boundary between the particles of the first section and the particles of the second section; and (5) compressing the gradient-shaped particles. [5] A method for producing a radial gradient solid cosmetic according to [4], comprising: (1) a step of granulating at least three different colored particles having an average particle diameter of 0.2 mm or more; (2) a step of filling a filling unit having three or more sections with the particles, wherein one or more particles are filled into a first section including the center point of the filling unit, one or more particles are filled into a second section surrounding the outside of the first section of the filling unit, and one or more particles are filled into a third section surrounding the outside of the second section of the filling unit; (3) a step of moving the particles of the first section, the particles of the second section, and the particles of the third section from the filling unit into a cosmetic container without partitions between the first, second, and third sections; (4) a step of inserting a stirring rod substantially perpendicular to the particles in the cosmetic container and rotating it in a circular motion around the center point to make the boundaries between the particles of the first section, the second section, and the third section a gradient; and (5) a step of compressing the gradient particles. [6] A method for producing a radial gradient solid cosmetic according to [4] or [5], comprising two or more particles of different colors in each section, and [7] A method for producing a radial gradient solid cosmetic according to any one of [4] to [6], wherein the particles are granulated from a mixture containing oil and powder. Regarding. [Effects of the Invention]

[0006] The present invention provides a radial gradient solid cosmetic composition that offers a radial gradient in particle shape. Furthermore, the present invention includes a gradient combining two or more types of particles, exhibiting even greater aesthetic appeal. The present invention's method for producing a radial gradient solid cosmetic composition allows for the easy creation of a radial gradient of particles. In addition to a two-part radial gradient, a three-part or more radial gradient can be easily created. Furthermore, a radial gradient containing two or more types of particles in a single section can also be easily produced. [Brief explanation of the drawing]

[0007] [Figure 1] These are photographs (A and B) showing two embodiments of the radial gradient solid cosmetic composition of the present invention. [Figure 2] Photograph (A) and diagrams (B-E) illustrate the characteristics of the gradient solid cosmetic composition of the present invention, showing that "the particles have a radial gradient of concentration from a central point." [Figure 3] This is a schematic diagram of a filling unit (conveying jig) having two sections. [Figure 4] This is a schematic diagram showing two embodiments (A and B) of a filling unit (conveying jig) having two sections, and one embodiment (C) of a filling unit (conveying jig) having three sections. [Figure 5] This is a schematic diagram of a filling unit (conveying jig) and stirring rod having three sections. [Modes for carrying out the invention]

[0008] [1] Radial gradient solid cosmetic The radial gradient solid cosmetic composition of the present invention is a radial gradient solid cosmetic composition comprising two or more particles of different colors, each of which has an average particle diameter of 0.2 mm or more, and at least one of the particles has a direction with a density gradient radiating from a central point.

[0009] The types of particles included are not particularly limited as long as there are two or more types, and examples include 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, or 30 types. However, if there are too many types, the colors of each particle may mix, making the color tone unclear, or it may become impossible to obtain a beautiful radial gradation.

[0010] The average particle diameter of the aforementioned particles is not particularly limited as long as it is 0.2 mm or more, but the lower limit is preferably 0.3 mm or more, more preferably 0.4 mm or more, even more preferably 0.5 mm or more, and most preferably 0.6 mm or more. The upper limit is also not particularly limited, but is preferably 6 mm or less, more preferably 5 mm or less, even more preferably 4 mm or less, and most preferably 2.5 mm or less. By being within the above range, an aesthetically pleasing radial gradation can be created. The average particle size can be measured using image analysis software. It is possible to measure the average particle size of all particles in a cosmetic product, as well as the average particle size of particles of a specific color.

[0011] The content of each particle in the radial gradient solid cosmetic composition of the present invention may be the same for all particles, or it may vary for each particle. For example, in the radial gradient solid cosmetic composition shown in Figure 1(A), the content of red particles increases in the order of pink particles < white particles. For example, it is also possible to have the same content of red, pink, and white particles. However, in this case, the distance from the center of the color of the particle placed in the center becomes longer and more noticeable. Generally, increasing the content of particles of the surrounding colors results in a more beautiful radial gradient. The particle content is not particularly limited, but the lower limit is 2% or more of the total amount of cosmetic, preferably 5% or more, more preferably 7% or more, and most preferably 10% or more. The upper limit is, for example, 70% or less, preferably 50% or less, more preferably 45% or less, and even more preferably 40% or less. The upper and lower limits can be combined. The percentage of content may be by weight %, or it may be by area %, calculated from the photograph in Figure 1(A), but it is preferable to specify it by area. When specifying the particle content by area, the content can be determined by image analysis.

[0012] The color of the particles of the radial gradient solid cosmetic of the present invention is not particularly limited, and examples thereof include color tones such as red, yellowish red, yellow, yellowish green, green, bluish green, blue, purplish blue, purple, and reddish purple, white, and black. By combining these colors to create a gradient, as shown in FIGS. 1 and 2, an excellent aesthetic solid cosmetic that gives various impressions can be obtained.

[0013] 《Radial Gradient》 In the gradient solid cosmetic of the present invention, at least one kind of particle has a direction with a concentration gradient radially from the center point. That is, the radial gradient solid cosmetic of the present invention has a radial gradient by the particles. The radial gradient by the particles can be visually confirmed as shown in FIGS. 1 and 2. Also, for example, the fact that "one kind of particle has a direction with a concentration gradient radially from the center point" can be confirmed by the following method. This will be described using FIG. 2(A). Two circles with a diameter of 1 cm are set in a straight line drawn from the center point of the upper surface of the solid cosmetic to the outside. The interval between these two circles is, for example, 1 cm to 2 cm (specifically, for example, 1 cm, 1.5 cm, or 2 cm). The interval between the two circles can be measured by measuring the interval between the centers of the respective circles. In FIG. 2, the intervals between circle 1 and circle 2 and between circle 2 and circle 3 are 1.5 cm. Also, when the straight line drawn from the center point of the solid cosmetic to the outside is 2 cm or less, the interval between the two circles may be 1 cm or less. In this case, the interval between the two circles may be, for example, 1 / 3 of the straight line drawn from the center point to the outside. For example, when the straight line is 1.8 cm, the interval between the two circles may be 0.6 cm. In this case, a part of the two circles overlaps, but the fact that "one kind of particle has a direction with a concentration gradient" can be confirmed.

[0014] As used herein, the "center point" may be the center of a circle when the solid cosmetic is circular (Figure 2B). However, it may be offset from the center of the circle. For example, as shown in Figure 2C, a radial gradient may be provided within the circle indicated by the dashed line with the "center point" offset from the center of the circle of the solid cosmetic as the center. Further, as shown in Figure 2D, in the case of a square solid cosmetic, a radial gradient may be provided within the circle indicated by the dashed line with the center of gravity of the square as the center point. Further, in the case of a square solid cosmetic, a radial gradient may be formed with a point other than the center of gravity as the center point. Further, in the case of a rectangular solid cosmetic, the center of gravity may be used as the center point, but as shown in Figure 2E, a radial gradient may be formed within the circle indicated by the dashed line with a point other than the center of gravity as the center point.

[0015] For example, the content rates (area rates) of the red particles in Circles 1 and 2 are 70% and 20% respectively, and the reduction rate of the content rate (area rate) of Circle 2 with respect to Circle 1 is 50%. Also, the content rates (area rates) of the dark pink particles in Circles 1 and 2 are 30% and 45% respectively, and the increase rate of the content rate (area rate) of Square 2 with respect to Square 1 is 15%. Also, the content rates (area rates) of the light pink particles in Circles 1 and 2 are 0% and 35% respectively, and the increase rate of the content rate (area rate) of Circle 2 with respect to Circle 1 is 35%. The red particles, dark pink particles, and light pink particles in Circles 1 and 2 exhibit a gradient, and at least one type of particle has a direction with a concentration gradient in the direction between Circle 1 and Circle 2.

[0016] Furthermore, the percentage of red particles in circles 2 and 3 is 20% and 10%, respectively, and the decrease in the percentage of red particles in circle 3 compared to circle 2 is 10%. Also, the percentage of dark pink particles in circles 2 and 3 is 45% and 25%, respectively, and the decrease in the percentage of dark pink particles in circle 3 compared to circle 2 is 20%. Also, the percentage of light pink particles in circles 2 and 3 is 35% and 65%, respectively, and the increase in the percentage of light pink particles in circle 3 compared to circle 2 is 30%. The red particles, dark pink particles, and light pink particles in circles 2 and 3 show a gradient, and at least one type of particle has a direction with a concentration gradient in the direction of circles 1 and 2.

[0017] The rate of decrease or increase in the aforementioned content (area ratio) is not particularly limited as long as a gradient is obtained, but for example it is 5% or more, preferably 10% or more, more preferably 15% or more, and most preferably 20% or more. Therefore, the radial gradient solid cosmetic composition of the present invention preferably has two circles with a diameter of 1 cm and separated by 1.5 cm, wherein when the area of ​​at least one particle in these circles is compared, the decrease or increase rate is 5% or more.

[0018] The radial gradient solid cosmetic composition of the present invention is not particularly limited as long as it is a solid cosmetic composition containing particles, but examples include blush, face powder, highlighter, eyebrow powder, foundation, bronzer, or eyeshadow. The shape of the radial gradient solid cosmetic as seen from above is not particularly limited as long as a gradient can be formed, but examples include rectangles, squares, circles, ovals, decagons, nonagons, octagons, heptagons, hexagons, pentagons, quadrilaterals, stars, hearts, tears, or triangles.

[0019] [2] Method for manufacturing a radial gradient solid cosmetic The present invention provides a method for producing a radially gradient solid cosmetic composition, comprising: (1) granulating at least two different colored particles having an average particle diameter of 0.2 mm or more; (2) filling a filling unit (conveying jig) having two or more sections with the particles, wherein one or more particles are filled into the first section in the center of the filling unit (conveying jig), and one or more particles are filled into the second section surrounding the outside of the first section of the filling unit (conveying jig); (3) moving the particles from the filling unit (conveying jig) to a cosmetic container without a partition between the first and second sections; (4) inserting a stirring rod substantially perpendicularly into the particles in the cosmetic container and rotating it in a circular motion around a central point to create a gradient at the boundary between the particles of the first section and the particles of the second section; and (5) compressing the gradient-shaped particles.

[0020] The present invention's method for producing a radial gradient solid cosmetic can be carried out by setting three or more sections in a filling unit. The present invention provides a method for producing a radial gradient solid cosmetic, comprising: (1) a step of granulating at least three different colored particles having an average particle diameter of 0.2 mm or more; and (2) a step of filling a filling unit (conveying jig) having three or more sections with the particles, wherein one or more particles are placed in the first section in the center of the filling unit (conveying jig), one or more particles are placed in the second section surrounding the outside of the first section of the filling unit (conveying jig), and one or more particles are placed outside the second section of the filling unit (conveying jig). The third section enclosed by the container includes the following steps: (3) a filling step, a step of moving the particles of the first section, the particles of the second section, and the particles of the third section from the filling unit (transport jig) to a cosmetic container that does not have partitions between the first, second, and third sections; (4) a step of inserting a stirring rod approximately perpendicular to the particles in the cosmetic container and rotating it in a circular motion around the center point to create a gradient at the boundaries between the particles of the first, second, and third sections; and (5) a step of compressing the gradient-shaped particles. According to the method for producing radial gradient solid cosmetic composition of the present invention, four or more gradients can be easily produced by setting four or more divisions (for example, five divisions, six divisions, seven divisions, eight divisions, nine divisions, or ten divisions) in the filling unit.

[0021] According to the method for producing a radial gradient solid cosmetic of the present invention, one section may contain two or more particles of different colors. By containing two or more particles of different colors, a solid cosmetic with excellent aesthetics, as shown in Figure 1, can be obtained. The types of particles of different colors contained in one section are not limited, but examples include 3, 4, 5, 6, 7, 8, 9, 10, etc. However, if there are too many, the colors of each particle may mix, making the color tone unclear or preventing a beautiful gradient from being obtained.

[0022] 《Process 1》 In step 1, at least one (or more) particles of different colors having an average particle diameter of 0.2 mm or more are granulated. The particles are of different colors and are not particularly limited as long as they can be used in solid cosmetics, but they may include powders and oils.

[0023] The powder is not particularly limited as long as the effects of the present invention can be obtained, but examples include inorganic powders (e.g., inorganic extender pigments or inorganic pigments), organic powders (e.g., organic extender powders or organic pigments), luminous powders (pearlescent agents or glitter agents), metal powders, or composite powders combining these.

[0024] Examples of inorganic pigments, though not limited to them, include talc, mica, sericite, kaolin, alumina, anhydrous silicic acid, magnesium aluminum silicate, synthetic fluorphlogopite, cerium oxide, boron nitride, barium sulfate, calcium sulfate, and as metal soaps, aluminum stearate, zinc stearate, magnesium stearate, calcium stearate, zinc palmitate, zinc myristate, magnesium myristate, zinc laurate, or zinc undecylenate. One or more of these can be used in combination. Examples of inorganic pigments, though not limited to them, include titanium dioxide, zinc oxide, red iron oxide, yellow iron oxide, black iron oxide, ultramarine, manganese violet, or conch, and one or more of these can be used in combination.

[0025] Examples of organic powders, though not limited to them, include cellulose powder, starch, nylon powder, silicone, polyacrylic acid ester, polyurethane, polyolefin, polystyrene, or polylactic acid. Examples of organic pigments include Red 201, Red 202, Red 204, Red 205, Red 220, Red 226, Red 228, Red 305, Orange 203, Orange 204, Yellow 205, Yellow 401, and Blue 404, as well as Red 3, Red 104, Red 106, Red 227, Red 230, Red 401, Red 505, Orange 205, Yellow 4, Yellow 5, Yellow 202, Yellow 203, Green 3, or Blue 1. One or more of these can be used in combination. Zirconium lake, barium lake, or aluminum lake of these organic pigments can also be used.

[0026] Examples of the aforementioned pearlescent agents, though not limited to them, include titanium mica, red ochre-coated mica, red ochre-coated titanium mica, carmine-coated titanium mica, Prussian blue-coated titanium mica, titanium oxide-coated synthetic fluorphlogopite, red ochre-titanium oxide-coated synthetic fluorphlogopite, titanium oxide-coated glass flakes, titanium oxide-coated alumina flakes, titanium oxide-coated silica flakes, silica-coated aluminum, iron oxide-silica-coated aluminum, and silica-coated iron. Examples of glitter agents, though not limited to them, include polyethylene terephthalate / polymethyl methacrylate laminated film powder, polyethylene terephthalate / polyolefin laminated film powder, epoxy resin coated aluminum vapor-deposited polyethylene terephthalate, aluminum vapor-deposited polyethylene terephthalate, urethane resin coated aluminum vapor-deposited polyethylene terephthalate, and acrylic resin coated aluminum powder.

[0027] Examples of the aforementioned metal powder include, but are not limited to, aluminum powder, platinum, gold, silver, or copper.

[0028] The powder may be surface-treated. Specifically, the powder may be surface-treated with a fluorine compound, silicone compound, hydrocarbon, higher fatty acid, higher alcohol, metal soap, surfactant, or water-soluble polymer.

[0029] The oil content is not particularly limited as long as it can be mixed with the powder to produce granules, but examples include ester oils, hydrocarbon oils, ether oils, aliphatic alcohols, higher fatty acids, animal and vegetable oils, silicones, or terpene oils.

[0030] Examples of ester oils include isopropyl myristate, butyl myristate, isopropyl palmitate, butyl stearate, ethyl stearate, ethyl oleate, ethyl linoleate, isopropyl linoleate, cetyl caprylate, hexyl laurate, decyl myristate, myristyl myristate, cetyl myristate, cetyl palmitate, stearyl stearate, decyl oleate, oleyl oleate, cetyl ricinoleate, isostearyl laurate, isotridecyl myristate, 2-hexyldecyl myristate, myristic acid Isostearyl acid, 2-octyldodecyl myristate, 2-ethylhexyl palmitate, 2-hexyldecyl palmitate, isostearyl palmitate, 2-ethylhexyl stearate, 2-hexyldecyl stearate, isodecyl oleate, 2-octyldodecyl oleate, 2-octyldodecyl ricinoleate, ethyl isostearate, isopropyl isostearate, cetyl 2-ethylhexanoate, cetostearyl 2-ethylhexanoate, stearyl 2-ethylhexanoate, hexyl isostearate, ethyl 2-ethylhexanoate Ethylene glycol, ethylene glycol dioleate, propylene glycol dicaprylate, di(caprylic / capric acid) propylene glycol, propylene glycol dicaprate, propylene glycol dioleate, neopentyl glycol dicaprate, neopentyl glycol di2-ethylhexanoate, glyceryl tricaprylate, glyceryl tri2-ethylhexanoate, glyceryl tri(caprylic / capric acid), glyceryl triundecylate, glyceryl triisopalmitate, glyceryl triisostearate, tri2-ethylhexanoate Trimethylolpropane, trimethylolpropane triisostearate, pentaerythritol tetra-2-ethylhexanoate, pentaerythritol tetramyristate, pentaerythritol tetraisostearate, dipentaerythritol fatty acid ester (1), 2-octyldodecyl neopentanoate, 2-hexyldecyl 2-ethylhexanoate, isostearyl 2-ethylhexanoate, 2-ethylhexyl isononanoate, 2-hexyldecyl dimethyloctanoate, 2-octyldodecyl dimethyloctanoate, 2-ethylhexyl isopalmitate,2-Hexyldecyl Isostearate, Isostearyl Isostearate, 2-Octyldodecyl Isostearate, Lauryl Lactate, Myristyl Lactate, Cetyl Lactate, 2-Octyldodecyl Lactate, Triethyl Citrate, Acetyl Triethyl Citrate, Acetyl Tributyl Citrate, Tri-2-Ethylhexyl Citrate, Triisocetyl Citrate, Tri-2-Octyldodecyl Citrate, Diisostearyl Malate, 2-Ethylhexyl Hydroxystearate, Di-2-Ethylhexyl Succinate, Diisopropyl Adipate, Diisobutyl Adipate, Di-2-Ethylhexyl Adipate, Diethyl Sebacate, Diisopropyl Sebacate, Di-2-Ethylhexyl Sebacate, Dibutyloctyl Sebacate, Cholesteryl Stearate, Cholesteryl Isostearate, Cholesteryl Hydroxystearate, Oleic Acid Examples include cholesteryl, dihydrocholesteryl oleate, phytosteryl isostearate, phytosteryl oleate, isocetyl 12-stearoylhydroxystearate, stearyl 12-stearoylhydroxystearate, or isostearyl 12-stearoylhydroxystearate, polyoxyethylene(3) monooxypropylene cetyl ether acetate, hydrogenated castor oil isostearate, trimethylolpropane triethylhexanoate, isodecyl neopentanoate, sorbitan sesquiisostearate, dimer dilinoleyl bis(behenyl / isostearyl / phytosteryl) dimer dilinoleate, hydrogenated castor oil dimer dilinoleate, octyldodecyl stearoyloxystearate, or polyoxyethylene(3) monooxypropylene isocetyl ether acetate.

[0031] Examples of hydrocarbon oils include ozokerite, α-olefin oligomer, liquid paraffin, liquid isoparaffin, light isoparaffin, light liquid isoparaffin, isododecane, synthetic squalane, vegetable squalane, squalane, ceresin, paraffin, polyethylene powder, polybutene, liquid isoparaffin, liquid paraffin, squalene, pristane, petrolatum, or microcrystalline wax.

[0032] Examples of aliphatic alcohols include linear saturated alcohols (e.g., lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, or behenyl alcohol), branched saturated alcohols (e.g., isostearyl alcohol, or octyldodecanol), or unsaturated alcohols (e.g., oleyl alcohol), which are alcohols with 12 to 22 carbon atoms (so-called higher alcohols).

[0033] Examples of the aforementioned higher fatty acids include linear saturated fatty acids (e.g., lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, 12-hydroxystearic acid), branched saturated fatty acids (e.g., isostearic acid), unsaturated fatty acids (e.g., oleic acid, linoleic acid, linolenic acid, undecylenic acid, eicosapentaenoic acid, docosahexaenoic acid), tallic acid, lanolinic acid, and others.

[0034] Examples of the aforementioned animal and vegetable oils include: roughy orange oil, jojoba oil, sugarcane wax, candelilla wax, carnauba wax, beeswax, shellac, lanolin, montan wax, and other animal and vegetable waxes; avocado oil, corn oil, evening primrose oil, peach oil, camellia oil, castor oil, safflower oil, cinnamon oil, almond oil, soybean oil, soybean germ oil, rapeseed oil, high-oleic rapeseed oil, corn oil, sesame oil, perilla oil, flaxseed oil, peanut oil, safflower oil, high-oleic safflower oil, Examples include sunflower oil, mid-oleic sunflower oil, high-oleic sunflower oil, cottonseed oil, grape seed oil, macadamia nut oil, hazelnut oil, pumpkin seed oil, walnut oil, camellia oil, tea seed oil, perilla oil, borage oil, olive oil, rice bran oil, wheat germ oil, palm oil, palm kernel oil, coconut oil, cocoa butter, egg yolk oil, mink oil, beef tallow, pork tallow, lard, chicken fat, milk fat, fish oil, seal oil, and algal oil, as well as their fractionated oils, hydrogenated oils, and transesterified oils.

[0035] Examples of the ether oils mentioned above include alkyl-1,3-dimethylbutyl ether and nonylphenyl ether.

[0036] Examples of the aforementioned silicones, though not limited to them, include dimethicone, methyl trimethicone, diphenyl dimethicone, phenyl trimethicone, diphenylsiloxy phenyl trimethicone, (stearoxymethicone / dimethicone) copolymer, cyclopentasiloxane, methylcyclopolysiloxane, methicone, and hydrogen dimethicone.

[0037] Preferred oils include diisostearyl malate, hydrogenated castor oil isostearate, trimethylolpropane triethylhexanoate, petrolatum, isodecyl neopentanoate, sorbitan sesquiisostearate, bis(behenyl / isostearyl / phytosteryl) dimer dilinoleyl dimer dilinoleate, caprylic / capric triglyceride, squalane, hydrogenated castor oil dimer dilinoleate, octyldodecyl stearoyl oxystearate, carnauba wax, beeswax, or cetyl alcohol.

[0038] The main components of the granules (particles) before filling in step 2 are the powder and oil. The powder content relative to the granules is not particularly limited, but the lower limit is, for example, 50% by weight or more, preferably 55% by weight, more preferably 60% by weight, even more preferably 65% ​​by weight, even more preferably 70% by weight, even more preferably 75% by weight, and even more preferably 80% by weight. The upper limit is, for example, 95% by weight, preferably 90% by weight, and even more preferably 85% by weight. The lower limit and upper limit can be combined as appropriate. The oil content in the granules is not particularly limited, but the lower limit is, for example, 5% by weight or more, preferably 10% by weight, and more preferably 15% by weight. The upper limit is, for example, 50% by weight, preferably 45% by weight, and more preferably 40% by weight. The lower and upper limits can be combined as appropriate.

[0039] The mixture before granulation further contains a granulation solvent in addition to the powder and oil. The inclusion of the granulation solvent facilitates the mixing of the powder and oil, making it possible to obtain a mixture suitable for granulation. The granulation solvent is not particularly limited, but examples include ethanol, water, acetone, cyclopentasiloxane, isopropanol, hydrogenated polyisobutene, or isododecane. The content of the granulation solvent relative to the mixture before granulation is, for example, 0 to 50% by weight, preferably 1 to 45% by weight. Since the granulation solvent almost completely volatilizes after granulation, the main components of the granulated material (particles) before filling are the aforementioned powder and oil.

[0040] The granules (particles) may also contain other components. These other components may include water (e.g., deionized water), humectants (e.g., dipropylene glycol, glycerin, butylene glycol, polyoxypropylene (9) glyceryl ether, dihydroxypropyl arginine solution, trimethylglycine, concentrated glycerin, sorbitol, xylitol, hyaluronic acid, sodium pyrrolidone carboxylate, ceramides, or hydrolyzed keratin), colorants (e.g., pigments or dyes), viscosity modifiers (e.g., methylcellulose, polyethylene glycol), and emulsifiers (e.g., monostearyl esters). Examples of other ingredients include glycerin distearate, pearlescent gloss-granulating agents (e.g., glycol distearate or ethylene glycol distearate), salts (e.g., sodium chloride), plant extracts (e.g., chamomile extract), preservatives (e.g., sodium benzoate), preservative aids (e.g., phanoxyethanol, pentylene glycol, glyceryl caprylate, or 1,2-hexanediol), vitamins, fragrances, UV absorbers, antioxidants, humectants, chelating agents (EDTA-2Na), and pH adjusters (e.g., citric acid or tartaric acid). The content of other ingredients is not particularly limited, but is, for example, 0 to 20% by weight, preferably 0 to 10% by weight.

[0041] The granulation method is not particularly limited and includes methods such as agitation granulation, extrusion granulation, fluidized bed granulation, or rolling granulation.

[0042] The average particle diameter of the granules (particles) is not particularly limited as long as it is 0.2 mm or larger, but the lower limit is preferably 0.3 mm or larger, more preferably 0.4 mm or larger, even more preferably 0.5 mm or larger, and most preferably 0.6 mm or larger. The upper limit is also not particularly limited, but is preferably 5 mm or smaller, more preferably 4 mm or smaller, even more preferably 3 mm or smaller, and most preferably 2 mm or smaller. By being within the above range, an aesthetically pleasing gradation can be created. In this specification, the "average particle size" of granules (particles) in the manufacturing process can be the particle size at 50% of the cumulative value in the particle size distribution obtained by, for example, the laser diffraction-scattering method.

[0043] 《Process 2》 Step 2 is a step of filling a filling unit having two or more compartments with particles, wherein one or more types of particles are filled into the first compartment in the center of the filling unit, and one or more types of particles are filled into the second compartment surrounding the outside of the first compartment of the filling unit (Figures 3, 4A, and 4B). For example, in the case of a filling unit with three compartments, one or more types of particles are filled into the first compartment in the center of the filling unit, one or more types of particles are filled into the second compartment surrounding the outside of the first compartment of the filling unit, and one or more types of particles are filled into the third compartment surrounding the outside of the second compartment of the filling unit (Figure 4C). The shapes of the first, second, and third sections are not particularly limited; for example, they may be circular or elliptical. Furthermore, the shapes of the first, second, and third sections may be used in combination.

[0044] Figures 3, 4A, and 4B show a filling unit having two sections. One or more types of particles are filled into the first section (Phase B) of the filling unit, and one or more types of particles are filled into the second section (Phase A). Basically, the color tones of the particles in the first section and the particles in the second section are different, thereby creating a gradient. However, if two or more types of particles are filled into the first section and two or more types of particles are filled into the second section, the color tones of some of the particles in the first section and some of the particles in the second section may be the same. In the case of the gradient solid cosmetic shown in Figure 1A, the first section is filled with mixed particles containing red and light red particles in a 2:1 ratio. The second section is filled with mixed particles containing light red and white particles in a 1:2 ratio.

[0045] Figure 4C shows a packing unit having three sections. One or more types of particles are packed into the first section (C phase) of the packing unit, one or more types of particles are packed into the second section (B phase), and one or more types of particles are packed into the third section (A phase). Basically, the color tones of the particles in the first section, the second section, and the third section are different, thereby creating a gradient. Note that if two or more types of particles are packed into the first section, two or more types of particles are packed into the second section, and two or more types of particles are packed into the third section, the color tones of some of the particles in the first section, some of the particles in the second section, and some of the particles in the third section may be the same. In the case of the gradient solid cosmetic shown in Figure 1B, the first section is filled with yellow particles. The second section is filled with mixed particles containing dark pink and light pink in a 2:1 ratio. The third section is filled with mixed particles containing light pink and white in a 1:2 ratio.

[0046] When a single section contains two or more types of particles, the proportion of particles contained in each section is not particularly limited, but the lower limit is preferably 5% by weight or more, more preferably 10% by weight or more, and even more preferably 15% by weight or more. The upper limit is also not particularly limited, but is preferably 95% by weight or less, more preferably 90% by weight or less, even more preferably 85% by weight or less, and most preferably 80% by weight or less. The aforementioned lower and upper limits can be combined as appropriate.

[0047] The filling of particles into the filling unit involves simultaneously or sequentially filling the first and second sections with the particles (mixed particles) to be filled into each section from the hopper. In conventional methods, when filling the filling unit with powder, it was necessary to circulate the powder within the hopper. However, in this invention, since the filling material is particles, the particles can be filled into the filling unit in a manner close to gravity. For example, the amount of air supplied from the hopper can be 1.0 MPa or less, preferably 0.5 MPa or less. Note that if the air pressure is too high, the granulated material (particles) may be destroyed, which is undesirable.

[0048] 《Process 3》 In step 3, the particles of each section are transferred from the filling unit to the undivided cosmetic containers of each section. The bottom of the filling unit with sections can be opened, and the particles can be transferred directly to the undivided cosmetic containers. The shape of the cosmetic container can be appropriately selected according to the shape of the gradient solid cosmetic product, but examples include rectangles, squares, circles, ovals, decagons, nonagons, octagons, heptagons, hexagons, pentagons, quadrilaterals, star shapes, heart shapes, teardrop shapes, or triangles. Examples of cosmetic containers include metal dishes, resin dishes, or jar containers.

[0049] 《Step 4》 In step 4, a stirring rod is inserted almost perpendicularly into the particles in the cosmetic container and rotated in a circular motion around the center point, creating a gradient at the boundaries of each section of particles. Initially, the boundaries of the particles in each section of the cosmetic container are not mixed, but as the stirring rod rotates, particles of different colors are mixed, forming a radial gradient. While one or more stirring rods are sufficient, to improve stirring efficiency, it is preferable to have two or more, more preferably three or more, even more preferably four or more, even more preferably five or more, and even more preferably six or more. For example, as shown in Figure 5, six stirring rods can be attached to a disc and rotated to efficiently form a radial gradient. The rotation speed is, for example, 1 to 200 rpm, preferably 10 to 100 rpm. The rotation time can also be adjusted as appropriate, but for example, it is 1 to 10 seconds, preferably 3 to 6 seconds. If the rotation is too strong and / or the rotation time is too long, the particles may be overmixed, resulting in an unattractive gradation. However, those skilled in the art can appropriately select the frequency and time to obtain an aesthetically pleasing gradation.

[0050] 《Step 5》 In step 5, the gradient-shaped particles are compressed. The compression molding method is not particularly limited, and a press using an air cylinder or hydraulic cylinder, or a press using a servo motor can be used. [Examples]

[0051] The present invention will be specifically described below with reference to examples, but these examples are not intended to limit the scope of the present invention.

[0052] Example 1 In this example, a filling unit having two compartments was used, and two types of granules were filled into each compartment to produce a gradient solid cosmetic. The raw materials are shown in Table 1. The ratio of raw materials is in weight percent. [Table 1]

[0053] The powders of raw materials 1 to 8 were mixed to produce three types of powder mixtures: red, light red, and white. The color of the powder mixture was adjusted by the content of raw materials 5 to 7. Raw materials 9 to 12 were added and mixed uniformly. Ethyl alcohol was added in a range of 20 to 40 parts by weight to 100 parts by weight of each of the four powder oil mixtures and mixed uniformly. The resulting mixtures were granulated using an extruder and dried to volatilize the ethyl alcohol. The average particle size of the granules was 1.0 mm. Mixed particle 1 was prepared by mixing red and light red granules in a ratio of 2:1. Mixed particle 2 was prepared by mixing light red and white granules in a ratio of 1:2. Mixed particle 1 was filled into a filling hopper, and mixed particle 2 was filled into another filling hopper. Mixed particle 1 ("Phase B" in Figure 4A) and mixed particle 2 ("Phase A" in Figure 4A) were placed from each filling hopper onto a conveying jig (cosmetic container) without partitions. The partitions were removed, and a disc with a stirring rod was rotated (50 rpm) to blur the boundary and create a gradient at the boundary. The gradient-formed mixed particles were compressed using a press to obtain a solid cosmetic (Figure 1A).

[0054] Example 2 In this example, a filling unit having three compartments was used, and three types of granules were filled into each compartment to produce a gradient solid cosmetic. The raw materials are shown in Table 2. The ratio of raw materials is in weight percent. [Table 2]

[0055] The powders of raw materials 1 to 10 were mixed to prepare four types of powder mixtures: yellow, dark pink, light pink, and white. The color of the powder mixture was adjusted by the content of raw materials 5 to 9. Raw materials 11 to 14 were added and mixed uniformly. Ethyl alcohol was added in a range of 20 to 40 parts by weight to 100 parts by weight of each of the five powder oil mixtures and mixed uniformly. The resulting mixtures were granulated using an extruder and dried to volatilize the ethyl alcohol. The average particle size of the granules was 1.0 mm. Yellow particles 1 were prepared. Mixed particles 2 were prepared by mixing dark pink and light pink granules in a 2:1 ratio. Mixed particles 3 were prepared by mixing light pink and white granules in a 1:2 ratio. Particles 1 were filled into a filling hopper, mixed particles 2 into another filling hopper, and mixed particles 3 into yet another filling hopper. From each filling hopper, mixed particles 1 ("Phase C" in Figure 4C), mixed particles 2 ("Phase B" in Figure 4C), and particles 3 ("Phase A" in Figure 4C) were placed onto a conveying jig (cosmetic container) without partitions. The partitions were removed, and a disc with a stirring rod was rotated (10-100 rpm) to blur the boundaries and create a gradient at the boundaries. The gradient-formed mixed particles were compressed using a press to obtain a solid cosmetic (Figure 1B). [Industrial applicability]

[0056] The radial gradient solid cosmetic composition of the present invention can be used as blush, face powder, highlighter, eyebrow powder, foundation, bronzer, or eyeshadow.

Claims

1. A radial gradient solid cosmetic comprising two or more particles of different colors, wherein each of the particles has an average particle diameter of 0.2 mm or more, and at least one of the particles has a direction with a density gradient radiating from a central point.

2. A radial gradient solid cosmetic according to claim 1, wherein the content of each particle contained in the radial gradient solid cosmetic is the same or different.

3. The radial gradient solid cosmetic according to claim 1 or 2, wherein the shape of the radial gradient solid cosmetic viewed from above is selected from the group consisting of a circle, an ellipse, a square, a rectangle, and a triangle.

4. (1) A step of granulating at least two different colored particles having an average particle diameter of 0.2 mm or more. (2) A step of filling a filling unit having two or more sections with particles, wherein one or more types of particles are filled into a first section including the center point of the filling unit, and one or more types of particles are filled into a second section surrounding the outside of the first section of the filling unit. (3) A step of transferring the particles of the first section and the particles of the second section from the filling unit to a cosmetic container without a partition between the first section and the second section. (4) Inserting a stirring rod nearly perpendicular to the particles in the cosmetic container and rotating it in a circular motion around the center point to create a gradient boundary between the first and second sections of particles. (5) A step of compressing the gradient-shaped particles, A method for producing a radial gradient solid cosmetic product.

5. (1) A step of granulating at least three different colored particles having an average particle diameter of 0.2 mm or more. (2) A step of filling a filling unit having three or more sections with particles, wherein one or more types of particles are filled into a first section containing the center point of the filling unit, one or more types of particles are filled into a second section surrounding the outside of the first section of the filling unit, and one or more types of particles are filled into a third section surrounding the outside of the second section of the filling unit. (3) A step of transferring the particles of the first section, the particles of the second section, and the particles of the third section from the filling unit to a cosmetic container that does not have partitions between the first section, the second section, and the third section. (4) Inserting a stirring rod nearly perpendicular to the particles in the cosmetic container and rotating it in a circular motion around the center point to create a gradient at the boundaries between the first, second, and third sections of particles. (5) A step of compressing the gradient-shaped particles, A method for producing a radial gradient solid cosmetic according to claim 4, including the method described in claim 4.

6. A method for producing a radial gradient solid cosmetic according to claim 4 or 5, wherein each section contains two or more particles of different colors.

7. A method for producing a radial gradient solid cosmetic according to any one of claims 4 or 5, wherein the particles are granulated from a mixture containing oil and powder.

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