Gradient solid cosmetic and method for producing the same

Abstract

To provide a cosmetic having excellent aesthetic properties.SOLUTION: A gradation solid cosmetic includes two or more kinds of particles having different colors, in which each of the particles has the average particle diameter of 0.2 mm or more, and at least one kind of particles has a direction with a concentration gradient.SELECTED DRAWING: None

Description

Technical Field

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

Background Art

[0002] Cosmetics have been developed that have colorful and aesthetic beauty by coloring the cosmetics in multiple colors. Furthermore, the aesthetic property is also improved by making the boundaries of multiple colors into a gradation. For example, Patent Document 1 discloses an oily solid cosmetic formed so as to change in a gradation from the color of a first cosmetic to the color of a second cosmetic. Also, Patent Document 2 discloses a multicolor solid cosmetic having a gradation 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 gradation of these cosmetics is a gradation from one color to another color, and the development of cosmetics having 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] As a result of earnestly researching cosmetics having excellent aesthetic properties, the present inventor has surprisingly found that a solid cosmetic having a gradation of particle shapes exhibits excellent aesthetic properties. The present invention is based on such findings. Therefore, the present invention provides [1] A gradient solid cosmetic containing two or more kinds of particles having different colors, wherein each of the particles has an average particle diameter of 0.2 mm or more, and at least one kind of particle has a direction of concentration gradient, the gradient solid cosmetic, [2] The gradient solid cosmetic according to [1], wherein the content of each particle contained in the gradient solid cosmetic is the same or different. [3] The gradient solid cosmetic according to [1] or [2], wherein the shape of the gradient solid cosmetic from above is selected from the group consisting of a rectangle, a square, a circle, an ellipse, and a triangle. [4] A method for producing a gradient solid cosmetic, comprising: (1) a step of granulating at least two kinds of particles having different colors and having an average particle diameter of 0.2 mm or more; (2) a step of filling particles into a filling unit having two or more sections, wherein one or more kinds of particles are filled into the first section of the filling unit and one or more kinds of particles are filled into the second section of the filling unit; (3) a step of moving the particles in the first section and the particles in the second section from the filling unit to a cosmetic container without a partition between the first section and the second section; (4) a step of vibrating the cosmetic container to make the boundary between the particles in the first section and the particles in the second section in a gradient shape; (5) a step of compression-molding the gradient-shaped particles. [5] A method for producing a gradient solid cosmetic according to [4], comprising: (1) a step of granulating at least three kinds of particles having different colors and having an average particle diameter of 0.2 mm or more; (2) a step of filling particles into a filling unit having three or more sections, wherein one or more kinds of particles are filled into the first section of the filling unit, one or more kinds of particles are filled into the second section of the filling unit, and one or more kinds of particles are filled into the third section of the filling unit; (3) a step of moving the particles in the first section, the particles in the second section, and the particles in the third section from the filling unit to a cosmetic container without a partition between each of the first section, the second section, and the third section; (4) a step of vibrating a mold to make the boundary between each of the particles in the first section, the second section, and the third section in a gradient shape; (5) a step of compression-molding the gradient-shaped particles. [6] The method for manufacturing a gradient solid cosmetic according to [4] or [5], wherein each section contains particles of two or more different colors, and [7] The method for manufacturing a gradient solid cosmetic according to any one of [4] to [6], wherein the particles are granulated from a mixture containing an oil component and a powder, relates to.

Advantages of the Invention

[0006] According to the gradient solid cosmetic of the present invention, a gradient of particle shapes can be provided. Further, the gradient solid cosmetic of the present invention contains a gradient combining two or more types of particles and can exhibit further excellent aesthetic properties. According to the method for manufacturing a gradient solid cosmetic of the present invention, a gradient of particles can be easily produced. In addition to a two-section gradient, a gradient of three or more sections can be easily created. Also, a gradient containing two or more types of particles in one section can be easily produced.

Brief Description of the Drawings

[0007]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Modes for Carrying Out the Invention

[0008] [1] Gradient solid cosmetic The gradient solid cosmetic of the present invention is a gradient solid cosmetic containing two or more kinds of particles having different colors, each of the particles having an average particle diameter of 0.2 mm or more, and at least one kind of particle having a direction with a concentration gradient.

[0009] The kinds of particles contained are not particularly limited as long as there are two or more kinds, and examples include 3 kinds, 4 kinds, 5 kinds, 6 kinds, 7 kinds, 8 kinds, 9 kinds, 10 kinds, 11 kinds, 12 kinds, 13 kinds, 14 kinds, 15 kinds, 16 kinds, 17 kinds, 18 kinds, 19 kinds, 20 kinds, 21 kinds, 22 kinds, 23 kinds, 24 kinds, 25 kinds, 26 kinds, 27 kinds, 28 kinds, 29 kinds, or 30 kinds, etc. However, if there are too many, the colors of each particle may be mixed and the color tone may become unclear, or a beautiful gradient may not be obtained.

[0010] The average particle diameter of the 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, still 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, still more preferably 4 mm or less, and most preferably 2.5 mm or less. By being within the above range, an aesthetic gradient can be produced. The average particle diameter can be measured using image analysis software. It is also possible to measure the average particle diameter of all the particles in the cosmetic, and it is also possible to measure the average particle diameter of the particles of a specific color.

[0011] The content of each particle contained in the gradient solid cosmetic of the present invention may be the same, or may be different for each particle. For example, in the gradient solid cosmetic shown in Fig. 1(A), the red particles and the pink particles have the same content. On the other hand, the dark pink, blue, yellow, and white particles have a lower content compared to the red and pink particles. The content of the particles is not particularly limited, but with respect to the total amount of the cosmetic, the lower limit is 2% or more, 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 still more preferably 40% or less. The above upper and lower limits can be combined with each other. The percentage of the content may be % by weight, or may be % by area calculated from the photograph in Fig. 1(A), but it is preferable to specify by area. When specifying the content of the particles by area, the content can be specified by image analysis.

[0012] The color of the particles of the gradation 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 gradation, as shown in Fig. 2, an excellent aesthetic solid cosmetic that gives various impressions can be obtained.

[0013] 《Gradation》 The gradation solid cosmetic of the present invention has at least one kind of particles having a direction with a concentration gradient. That is, the gradation solid cosmetic of the present invention has a gradation by the particles. The gradation by the particles can be visually confirmed as shown in Figs. 1 and 2. Also, for example, the fact that "one kind of particles has a direction with a concentration gradient" can be confirmed by the following method. This will be described with reference to Fig. 2(B). On the upper surface of the solid cosmetic, two squares of 1 cm 2 are set. The interval between these two squares is, for example, 1 cm to 2 cm (specifically, for example, 1 cm or 2 cm). The interval between the two squares can be measured by measuring the interval between the centers of the respective squares. In Fig. 1(B), the intervals between square 1 and square 2, square 1 and square 3, and square 4 and square 5 are 2 cm. In addition, when the major axis (long diameter) of the shape of the solid cosmetic is 2 cm or less, the distance between the two squares may be 1 cm or less. In this case, the distance between the two squares may be set to 1 / 3 of the major axis. For example, when the major axis (long diameter) is 1.8 cm, the distance between the two squares may be set to 0.6 cm. In this case, a part of the two squares overlaps, but it can be confirmed that "one kind of particles has a direction with a concentration gradient". In this specification, the "major axis" means, for example, the longer length of an ellipse, the length of the longer side of a rectangle, the length of the side of a square, or the diameter of a circle.

[0014] For example, the content rates (area rates) of the red particles in Square 1 and Square 2 are 70% and 35% respectively, and the decrease rate of the content rate (area rate) of Square 2 with respect to Square 1 is 35%. Also, the content rates (area rates) of the yellow particles in Square 1 and Square 2 are 5% and 12% respectively, and the increase rate of the content rate (area rate) of Square 2 with respect to Square 1 is 7%. Further, the content rates (area rates) of the blue particles in Square 1 and Square 2 are 7% and 12% respectively, and the increase rate of the content rate (area rate) of Square 2 with respect to Square 1 is 5%. The red particles, yellow particles, and blue particles in Square 1 and Square 2 show a gradation, and at least one kind of particles has a direction with a concentration gradient in the direction between Square 1 and Square 2.

[0015] Furthermore, the content ratios (area ratios) of red particles in square 1 and square 3 are 70% and 45% respectively, and the reduction rate of the content ratio (area ratio) of square 3 with respect to square 1 is 25%. Also, the content ratios (area ratios) of yellow particles in square 1 and square 3 are 5% and 5% respectively, and the increase rate of the content ratio (area ratio) of square 3 with respect to square 1 is 0%. Also, the content ratios (area ratios) of blue particles in square 1 and square 3 are 7% and 15% respectively, and the increase rate of the content ratio (area ratio) of square 3 with respect to square 1 is 8%. In square 1 and square 3, the yellow particles do not show a gradient. However, the red particles and blue particles in square 1 and square 3 show a gradient, and at least one type of particle has a direction with a concentration gradient in the direction between square 1 and square 3.

[0016] Also, the content ratios (area ratios) of red particles in square 4 and square 5 are 35% and 15% respectively, and the reduction rate of the content ratio (area ratio) of square 5 with respect to square 4 is 20%. Also, the content ratios (area ratios) of white particles in square 4 and square 5 are 5% and 12% respectively, and the increase rate of the content ratio (area ratio) of square 5 with respect to square 4 is 7%. Also, the content ratios (area ratios) of light pink particles in square 4 and square 5 are 45% and 75% respectively, and the increase rate of the content ratio (area ratio) of square 5 with respect to square 4 is 30%. The red particles, white particles, and light pink particles in square 1 and square 2 show a gradient, and at least one type of particle has a direction with a concentration gradient in the direction between square 4 and square 5.

[0017] The reduction rate or increase rate of the content ratio (area ratio) is not particularly limited as long as a gradient can be obtained. For example, it is 5% or more, preferably 10% or more, more preferably 15% or more, and most preferably 20% or more. Therefore, the gradient solid cosmetic of the present invention preferably has two 1 cm separated by 2 cm 2When comparing the areas of squares of at least one particle, there are two squares with a reduction rate or an increase rate of 5% or more.

[0018] The gradient solid cosmetic of the present invention is not particularly limited as long as it is a solid cosmetic containing particles, and examples thereof include cheek, face powder, highlighter, eyebrow, foundation, bronzer, or eyeshadow. The shape of the gradient solid cosmetic from above is not particularly limited as long as a gradient can be formed, and examples thereof include rectangle, square, circle, ellipse, decagon, nonagon, octagon, heptagon, hexagon, pentagon, quadrilateral, star shape, heart shape, teardrop shape, or triangle.

[0019] [2] Method for manufacturing a gradient solid cosmetic The method for manufacturing a gradient solid cosmetic of the present invention includes: (1) a step of granulating at least two kinds of particles having different color tones and having an average particle diameter of 0.2 mm or more; (2) a step of filling the particles into a filling unit having two or more sections, the step of filling one or more kinds of particles into the first section of the filling unit and one or more kinds of particles into the second section of the filling unit; (3) a step of moving the particles in the first section and the particles in the second section from the filling unit to a cosmetic container without a partition between the first section and the second section; (4) a step of vibrating the cosmetic container to make the boundary between the particles in the first section and the particles in the second section in a gradient shape; (5) a step of compression molding the gradient-shaped particles.

[0020] The method for manufacturing a gradient solid cosmetic of the present invention can be carried out by setting three or more sections in the filling unit. The method for manufacturing a gradation solid cosmetic of the present invention includes: (1) a step of granulating at least three types of particles having different color tones and an average particle diameter of 0.2 mm or more; (2) a step of filling the particles into a filling unit having three or more sections, wherein one or more types of particles are filled into the first section of the filling unit, one or more types of particles are filled into the second section of the filling unit, and one or more types of particles are filled into the third section of the filling unit; (3) a step of moving the particles in the first section, the particles in the second section, and the particles in the third section from the filling unit to a cosmetic container without a partition between the first section, the second section, and the third section; (4) a step of vibrating the cosmetic container to make the boundaries of the particles in the first section, the second section, and the third section gradation-like; and (5) a step of compression-molding the gradation-like particles. According to the method for manufacturing a gradation solid cosmetic of the present invention, by setting four or more sections (for example, five sections, six sections, seven sections, eight sections, nine sections, ten sections) in the filling unit, four or more gradations can be easily produced.

[0021] According to the method for manufacturing a gradation solid cosmetic of the present invention, one section may contain two or more types of particles having different color tones. By containing two or more types of particles having different color tones, a solid cosmetic having excellent aesthetic properties as shown in FIG. 1 or FIG. 2 can be obtained. The types of particles having different color tones contained in one section are not limited, but examples include three types, four types, five types, six types, seven types, eight types, nine types, ten types, etc. However, if there are too many, the colors of the respective particles may be mixed and the color tone may become unclear, or a beautiful gradation may not be obtained.

[0022] 《Step 1》 In the above Step 1, at least one type (one or more types) of particles having different color tones and an average particle diameter of 0.2 mm or more are granulated. The particles have different color tones and are not particularly limited as long as they can be used in solid cosmetics, but include powders and oils.

[0023] As the powder, as long as the effects of the present invention can be obtained, it is not particularly limited, but examples include inorganic powders (for example, inorganic extender pigments or inorganic pigments), organic powders (for example, organic extender powders or organic pigments), pearlescent powders (pearl agents or luster agents), metal powders, or composite powders combining them.

[0024] Examples of the inorganic extender pigments include, but are not limited to, talc, mica, sericite, kaolin, alumina, anhydrous silicic acid, magnesium aluminum silicate, synthetic phlogopite, cerium oxide, boron nitride, barium sulfate, calcium sulfate, and metal soaps such as 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 the inorganic pigments include, but are not limited to, titanium oxide, zinc oxide, red iron oxide, yellow iron oxide, black iron oxide, ultramarine, manganese violet, or indigo. One or more of these can be used in combination.

[0025] Examples of the organic extender powders include, but are not limited to, cellulose powder, starch, nylon powder, silicone, polyacrylate, polyurethane, polyolefin, polystyrene, or polylactic acid. Examples of the organic pigments include, for example, Red No. 201, Red No. 202, Red No. 204, Red No. 205, Red No. 220, Red No. 226, Red No. 228, Red No. 305, Orange No. 203, Orange No. 204, Yellow No. 205, Yellow No. 401, and Blue No. 404. Further examples include Red No. 3, Red No. 104, Red No. 106, Red No. 227, Red No. 230, Red No. 401, Red No. 505, Orange No. 205, Yellow No. 4, Yellow No. 5, Yellow No. 202, Yellow No. 203, Green No. 3, or Blue No. 1. One or more of these can be used in combination. Also, zirconium lakes, barium lakes, or aluminum lakes of these organic pigments can be used.

[0026] Examples of the pearl agent include, but are not limited to, mica titanium, bengala-coated mica, bengala-coated mica titanium, carmine-coated mica titanium, ultramarine-coated mica titanium, titanium oxide-coated synthetic phlogopite, bengala / titanium oxide-coated synthetic phlogopite, 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 the lame agent include, but are not limited to, 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 metal powder include, but are not limited to, aluminum powder, platinum, gold, silver, or copper.

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

[0029] The oil component is not particularly limited as long as it can be mixed with the powder to produce a granulated product, and examples thereof include ester oil, hydrocarbon oil, ether oil, aliphatic alcohol, higher fatty acid, animal and vegetable oil, silicone, or terpene oil.

[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, isostearyl myristate, 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, ethylene glycol di(2-ethylhexanoate), ethylene glycol dioleate, propylene glycol dicaprylate, propylene glycol di(capryl / caprate), propylene glycol dicaprate, propylene glycol dioleate, neopentyl glycol dicaprate, neopentyl glycol di(2-ethylhexanoate), glyceryl tricaprylate, glyceryl tri(2-ethylhexanoate), glyceryl tri(capryl / caprate), glyceryl triundecylate, glyceryl triisopalmitate, glyceryl triisostearate, trimethylolpropane tri(2-ethylhexanoate), 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, acetyltriethyl citrate, acetyltributyl 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, cholesteryl oleate, dihydrocholesteryl oleate, phytosteryl isostearate, phytosteryl oleate, isocetyl 12-stearoylhydroxystearate, stearyl 12-stearoylhydroxystearate, or isostearyl 12-stearoylhydroxystearate, cetyl polyoxyethylene(3)monoxypropylene ether, hydrogenated castor oil isostearate, trimethylolpropane triethylhexanoate, isodecyl neopentanoate, sorbitan sesquisostearate, dimerdilinoleic acid dimerdilinoleyl bis(behenyl / isostearyl / phytosteryl), hydrogenated castor oil dimerdilinoleate, octyldodecyl stearoyloxystearate or isocetyl polyoxyethylene(3)monoxypropylene ether, etc. can be mentioned.,

[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 the aliphatic alcohol include alcohols having 12 to 22 carbon atoms (so-called higher alcohols) such as 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).

[0033] Examples of the higher fatty acid 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), toluic acid, lanolinic acid, and the like.

[0034] Examples of the animal and vegetable oils and fats include animal and vegetable waxes such as orange raffia oil, jojoba oil, sugarcane wax, candelilla wax, carnauba wax, beeswax, shellac, lanolin, montan wax, etc., avocado oil, corn oil, evening primrose oil, persic oil, sasanqua 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, linseed oil, peanut oil, safflower oil, high oleic safflower oil, 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, 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 oil include alkyl-1,3-dimethylbutyl ether and nonylphenyl ether.

[0036] Examples of the silicone include, but are not limited to, dimethicone, methyltrimethicone, diphenyldimethylsilicone, phenyltrimethicone, diphenylsiloxyphenyltrimethicone, (stearoxymethicone / dimethylsilicone) copolymer, cyclopentasiloxane, methylcyclopolysiloxane, methicone, hydrogen dimethicone, and the like.

[0037] Examples of the preferred oil components include diisostearyl malate, hydrogenated castor oil isostearate, trimethylolpropane triethylhexanoate, petrolatum, isodecyl neopentanoate, sorbitan sesquisoisostearate, dimer dilinoleic acid dimer dilinoleyl bis(behenyl / isostearyl / phytosteryl), tri(caprylic acid / capric acid) glyceryl, squalane, hydrogenated castor oil dimer dilinoleate, octyldodecyl stearoyloxystearate, carnauba wax, beeswax, or cetyl alcohol.

[0038] The main components of the granulated product (particles) before filling in Step 2 are the powder and the oil component. The content of the powder in the granulated product 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, still more preferably 65% by weight, still more preferably 70% by weight, still more preferably 75% by weight, and still more preferably 80% by weight. The upper limit is, for example, 95% by weight, preferably 90% by weight, and more preferably 85% by weight. The lower limit and the upper limit can be appropriately combined. The content of the oil component in the granulated product 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 limit and the upper limit can be appropriately combined.

[0039] The mixture before granulation further contains a granulation solvent in addition to the powder and the oil component. By including the granulation solvent, kneading of the powder and the oil component can be facilitated, and a mixture suitable for granulation can be obtained. The granulation solvent is not particularly limited, and examples thereof include ethanol, water, acetone, cyclopentasiloxane, isopropanol, hydrogenated polyisobutene, or isododecane. The content of the granulation solvent in the mixture before granulation is, for example, 0 to 50% by weight, preferably 1 to 45% by weight. Since the granulation solvent mostly volatilizes after granulation, the main components of the granulated product (particles) before filling are the powder and the oil component.

[0040] Other components can also be included in the granulated product (particles). Examples of other components include water (e.g., ion-exchanged 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), emulsifiers (e.g., glycerin monostearate), pearl luster imparting 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., phenoxyethanol, pentylene glycol, glyceryl caprylate, or 1,2 - hexanediol), vitamin agents, fragrances, ultraviolet absorbers, antioxidants, wetting agents, chelating agents (EDTA - 2Na), pH adjusters (e.g., citric acid or tartaric acid). The content of other components is not particularly limited, but is, for example, 0 to 20% by weight, preferably 0 to 10% by weight.

[0041] The powder, oil component, and granulation solvent are kneaded and granulated. The granulation method is not particularly limited, and examples thereof include a stirring granulation method, an extrusion granulation method, a fluidized bed granulation method, or a rolling granulation method.

[0042] The average particle diameter of the granulated product (particles) is not particularly limited as long as it is 0.2 mm or more. However, the lower limit is preferably 0.3 mm or more, more preferably 0.4 mm or more, still 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 5 mm or less, more preferably 4 mm or less, still more preferably 3 mm or less, and most preferably 2 mm or less. By being within the above range, an aesthetic gradation can be produced. In this specification, the "average particle diameter" of the granulated product (particles) in the manufacturing process can use, for example, the particle diameter at the integrated value of 50% in the particle size distribution obtained by the laser diffraction / scattering method.

[0043] 《Step 2》 Step 2 is a step of filling particles into a filling unit having two or more sections, filling one or more types of particles into the first section of the filling unit and one or more types of particles into the second section of the filling unit. For example, in the case of a filling unit with three sections, one or more types of particles are filled into the first section of the filling unit, one or more types of particles are filled into the second section of the filling unit, and one or more types of particles are filled into the third section of the filling unit. Fig. 3 shows a filling unit having two sections. One or more types of particles are filled into the first section of the filling unit, and one or more types of particles are filled into the second section. Basically, the color tone of the particles in the first section is different from the color tone of the particles in the second section, whereby a gradation can be produced. When 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 tone of some of the particles in the first section and the color tone of some of the particles in the second section may be the same. In the case of the gradation solid cosmetic shown in Fig. 1, a mixed particle containing red:peach:blue particles in a ratio of 15:5:3 is filled into the first section. Also, a mixed particle containing light peach:white:yellow particles in a ratio of 15:5:3 is filled into the second section. In the case of the gradient solid cosmetic shown in Fig. 2(A), the first section is filled with mixed particles containing particles of burnt umber, golden tea, and dark green in a ratio of 15:5:3. Also, the second section is filled with mixed particles containing particles of tea, gold, and yellow green in a ratio of 15:5:3. In the case of the gradient solid cosmetic shown in Fig. 2(B), the first section is filled with mixed particles containing particles of red, orange red, and yellow green in a ratio of 15:5:3. Also, the second section is filled with mixed particles containing particles of orange, yellow orange, and yellow in a ratio of 15:5:3.

[0044] Fig. 4 shows a filling unit having three sections. One or more types of particles are filled in the first section of the filling unit, one or more types of particles are filled in the second section, and one or more types of particles are filled in the third section. Basically, the color tone of the particles in the first section, the color tone of the particles in the second section, and the color tone of the particles in the third section are different from each other, whereby a gradient can be produced. When two or more types of particles are filled in the first section, two or more types of particles are filled in the second section, and two or more types of particles are filled in the third section, the color tones of some of the particles in the first section, the color tones of some of the particles in the second section, and the color tones of some of the particles in the third section may be the same. In the case of the gradient solid cosmetic shown in Fig. 2(C), the first section is filled with mixed particles containing particles of blue, violet blue, light blue, and white in a ratio of 6:3:2:1. Also, the second section is filled with mixed particles containing particles of peach, red violet, light peach, and white in a ratio of 6:3:2:1. Further, the third section is filled with mixed particles containing particles of yellow, orange, light yellow, and white in a ratio of 6:3:2:1.

[0045] When two or more types of particles are included in one section, the ratio of the 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, still 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, still more preferably 85% by weight or less, and most preferably 80% by weight or less. The above lower limit and upper limit can be combined as appropriate.

[0046] The filling of particles into the filling unit is to fill the particles (mixed particles) to be filled into each section into the first section and the second section from the hopper simultaneously or sequentially. When the filling material is a conventional powder, when filling the powder into the filling unit, it was necessary to convect the powder in the hopper. However, in the present invention, since the filling material is particles, the particles can be filled into the filling unit in a manner close to natural falling. For example, the supply amount of air from the hopper can be 1.0 MPa or less, preferably 0.5 MPa or less. If the air pressure is too high, the granulated product (particles) may be broken, which is not preferable.

[0047] 《Step 3》 In Step 3, the particles in each section are moved from the filling unit to the cosmetic container without partitions in each section. The lower part of the filling unit having sections can be opened and directly moved to the cosmetic container without partitions in the sections. The shape of the cosmetic container can be appropriately selected according to the shape of the gradient solid cosmetic, and examples include rectangular, square, circular, elliptical, decagonal, nonagonal, octagonal, heptagonal, hexagonal, pentagonal, quadrilateral, star-shaped, heart-shaped, teardrop-shaped, or triangular. Examples of the cosmetic container include a metal dish, a resin dish, or a jar container.

[0048] 《Step 4》 In Step 4, the mold is vibrated to make the boundaries of the particles in each section in a gradient shape. The boundaries of the particles in each section in the cosmetic container are not initially mixed, but due to vibration, each particle moves slightly left and right and up and down, and the particles with different color tones are mixed to form a gradient. The vibration method is not particularly limited as long as a gradient is formed. For example, reciprocating vibration, swirling vibration, or tapping can be used. The vibration frequency can be, for example, implemented at 2 to 20 Hz, and it can be vibrated for, for example, 0.1 to 30 seconds, preferably 1 to 10 seconds. If the vibration is too strong and / or the vibration time is too long, the particles may be over-mixed, resulting in an inability to obtain an aesthetic gradation. However, those skilled in the art can appropriately select the vibration frequency and time to obtain an aesthetic gradation.

[0049] 《Step 5》 In Step 5, the gradient-like particles are compression molded. The compression molding method is not particularly limited, and a press using an air cylinder or a hydraulic cylinder, or a press using a servo motor can be used.

Example

[0050] Hereinafter, the present invention will be specifically described by way of examples, but these do not limit the scope of the present invention.

[0051] 《Example 1》 In this example, a filling unit having two sections was used, and three types of granulated products were filled into each section to produce a gradient solid cosmetic. The raw materials are shown in Table 1. The ratios of the raw materials are by weight %.

Table 1

[0052] The powders of the above-mentioned raw materials 1 to 7 and the preservative of raw material 8 were mixed to prepare six types of powder mixtures of red, peach, blue, light peach, white, and yellow. The color of the powder mixture was adjusted by the content of the powders of raw materials 5 to 7. A mixture of diethyl malate (5 parts by weight) of raw material 9, squalene (4 parts by weight) of raw material 10, sorbitan sesquisisostearate (0.8 parts by weight) of raw material 11, and an antioxidant (0.2 parts by weight) of raw material 12 was mixed to prepare an oil mixture. The oil mixture was added to the powder mixture and uniformly mixed. Ethyl alcohol was added in the range of 20 to 40 parts by weight to 100 parts by weight of the six types of powder-oil mixtures and uniformly mixed. The obtained mixture was granulated using an extrusion granulator and dried to volatilize ethyl alcohol. The average particle diameter of the granulated product was 1.0 mm. Mixed particles 1 were prepared by mixing red, pink, and blue granules at a ratio of 15:5:3, respectively. Also, mixed particles 2 were prepared by mixing light pink, white, and yellow granules at a ratio of 15:5:3, respectively. The mixed particles 1 were filled into a filling hopper ("A phase" in Fig. 3), and the mixed particles 2 were filled into another filling hopper ("B phase" in Fig. 3). The mixed particles 1 and the mixed particles 2 were placed on a partitionless conveying jig (cosmetic container) from each filling hopper. The conveying jig was vibrated at a frequency of 10 Hz for 5 seconds to create a gradient at the boundary. The mixed particles with the gradient created were compression-molded using a press machine to obtain a solid cosmetic (Fig. 1A).

[0053] 《Example 2》 In this example, a filling unit having three sections was used, and three types of granules were filled into each section to produce a gradient solid cosmetic. The raw materials are shown in Table 2. The ratios of the raw materials are by weight%.

Table 2

[0054] The powders of the above raw materials 1 to 9 and the preservative of raw material 10 were mixed to prepare a powder mixture of 10 colors: blue, violet blue, light blue, white, peach, red violet, light peach, yellow, orange, and light yellow. The color of the powder mixture was adjusted according to the content of the powders of raw materials 5 to 9. A fatty acid mixture was prepared by mixing diethyl malate (5 parts by weight) of raw material 11, squalene (4 parts by weight) of raw material 12, sorbitan sesquioleate (0.8 parts by weight) of raw material 13, and an antioxidant (0.2 parts by weight) of raw material 14. The fatty acid mixture was added to the powder mixture and uniformly mixed. Ethyl alcohol was added to 100 parts by weight of the 10 - color powder - fatty acid mixture in the range of 20 to 40 parts by weight and uniformly mixed. The obtained mixture was granulated using an extrusion granulator and dried to volatilize the ethyl alcohol. The average particle diameter of the granules was 1.0 mm. Mixed particle 1 was prepared by mixing blue, purple, water color, and white granules at a ratio of 6:3:2:1, respectively. Also, mixed particle 2 was prepared by mixing peach, reddish purple, light peach, and white granules at a ratio of 6:3:2:1, respectively. Further, mixed particle 3 was prepared by mixing yellow, orange, light yellow, and white granules at a ratio of 6:3:2:1, respectively. Mixed particle 1 was filled into a filling hopper ("A phase" in Fig. 4), mixed particle 2 was filled into another filling hopper ("B phase" in Fig. 4), and mixed particle 3 was filled into another filling hopper ("C phase" in Fig. 4). Mixed particle 1, mixed particle 2, and mixed particle 3 were placed on a conveying jig (cosmetic container) without a partition from each filling hopper. The conveying jig was vibrated at a frequency of 10 Hz for 5 seconds to create a gradient at the boundary. The mixed particles with the gradient created were compression-molded using a press machine to obtain a solid cosmetic (Fig. 2C).

Industrial Applicability

[0055] The gradient solid cosmetic of the present invention can be used as a cheek, face powder, highlighter, eyebrow, foundation, bronzer, or eyeshadow.

Claims

1. A gradation solid cosmetic containing two or more kinds of particles of different colors, wherein each of the particles has an average particle diameter of 0.2 mm or more, and at least one kind of particle has a direction of concentration gradient (however, excluding those in which the concentration gradient of the gradation spreading in the horizontal direction is constant in the vertical direction of the cosmetic container).

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

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

4. (1) A step of granulating at least two kinds of particles of different colors having an average particle diameter of 0.2 mm or more. (2) A step of filling particles into a filling unit having two or more sections, the step of filling one or more kinds of particles into the first section of the filling unit and one or more kinds of particles into the second section of the filling unit. (3) A step of moving the particles in the first section and the particles in the second section from the filling unit to a cosmetic container without a partition between the first section and the second section. (4) After completion of step (3), a step of vibrating the cosmetic container to make the boundary between the particles in the first section and the particles in the second section gradation. (5) A step of compression-molding the gradation-like particles. A method for manufacturing a gradation solid cosmetic, including (however, excluding a method for manufacturing a gradation solid cosmetic including vibrating the filling unit in step (3)).

5. (1) A step of granulating at least three kinds of particles of different colors 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, the step of filling one or more types of particles into the first section of the filling unit, one or more types of particles into the second section of the filling unit, and one or more types of particles into the third section of the filling unit. (3) A step of moving the particles in the first section, the particles in the second section, and the particles in the third section from the filling unit to a cosmetic container without a partition between the first section, the second section, and the third section. (4) A step of vibrating the mold to make the boundaries of the particles in the first section, the second section, and the third section gradation-like. (5) A step of compression-molding the gradation-like particles. The method for manufacturing a gradation solid cosmetic according to claim 4, comprising:

6. The method for manufacturing a gradation solid cosmetic according to claim 4 or 5, wherein each section contains two or more types of particles having different colors.

7. The method for manufacturing a gradation solid cosmetic according to any one of claims 4 to 6, wherein the particles are granulated from a mixture containing an oil component and a powder.

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