Method for manufacturing a tablet-form cosmetic composition shapeable into various three-dimensional forms

Abstract

The present invention relates to a cosmetic composition and a method for manufacturing the same. More specifically, the manufacturing process is simplified to increase production efficiency, and a product of uniform quality can be manufactured using a tablet molding machine. The tablet-type cosmetic composition manufactured as described above can be conveniently used without a dish container, and thus can be widely used in the cosmetics industry.

Description

Technology Field

[0001] This invention relates to a method for manufacturing a tablet-type cosmetic composition capable of being molded into various three-dimensional shapes. Background Technology

[0002] Generally, conventional cosmetic products in the form of ball powders are widely manufactured using a method in which a polymer mixture is formed into beads using a coating pan. In this process, after mixing polymer and powder components, the slurry or powder is repeatedly applied to the surface of a rotating coating pan to gradually form spherical particles. During this process, heating and cooling are repeated to harden the surface of the particles, thereby obtaining balls of the desired size and shape.

[0003] While this ball powder manufacturing process has the advantage of creating individual bead-like particles to impart a unique appearance to the product, it also has several limitations. First, heating and cooling steps are essential during the process, making it complex and time-consuming, which leads to reduced productivity. Additionally, inconsistent particle growth rates and heat distribution during the process can easily result in non-uniformity in the size and shape of the finished product, and it is difficult to achieve a smooth and homogeneous surface coating. In particular, poor surface uniformity can negatively impact product quality, including usability and spreadability.

[0004] Therefore, it is necessary to develop a new type of cosmetic composition and a method for manufacturing it that improves upon the disadvantages of existing ball powder cosmetic compositions, such as process complexity, reduced productivity, and non-uniform quality, and achieves uniform quality and a smooth surface through a simpler process. Through this, it is expected that a product satisfying both economic efficiency and quality can be provided. The problem to be solved

[0005] One aspect provides a method for preparing a cosmetic composition in the form of a tablet, comprising the steps of: mixing cellulose, pigment, and pearl to prepare a mixture; and compression molding the mixture.

[0006] Another aspect is to provide a tablet-type cosmetic composition prepared by the above method.

[0008] However, the problems that the present invention aims to solve are not limited to those mentioned above, and other unmentioned problems will be clearly understood by those skilled in the art from the description below. means of solving the problem

[0009] One aspect provides a method for preparing a cosmetic composition in the form of a tablet, comprising the steps of: mixing cellulose, pigment, and pearl to prepare a mixture; and compression molding the mixture.

[0010] The above cellulose is a natural material and is not limited to any type of cellulose that can be generally used in cosmetics, but may be one or more selected from the group consisting of cellulose, cellulose gum, microcrystalline cellulose, ethyl cellulose, hydroxypropyl methylcellulose, calcium carboxymethyl cellulose, methyl cellulose, hydroxyethyl cellulose, and hydroxypropyl cellulose, and preferably may be microcrystalline cellulose.

[0011] In addition, the cellulose may be 70 to 99 weight%, 75 to 99 weight%, 80 to 99 weight%, 80 to 98 weight%, 85 to 98 weight%, 85 to 97 weight%, 86 to 96 weight%, 87 to 95 weight%, 88 to 94 weight%, 89 to 94 weight%, 90 to 94 weight%, 91 to 94 weight%, or 91 to 93 weight% relative to the total weight of the cosmetic composition.

[0012] The above pigment refers to a general substance added to cosmetics to impart color to the skin, lips, nails, etc., or to enhance the visual appeal of a product. Organic and inorganic pigments that can generally be used in the field of cosmetics may be used without limitation, and the above inorganic pigment may be an iron oxide pigment. In addition, the above pigment may be included in an amount of 0.01 wt% or more and 20 wt%, 0.1 wt% or more and 20 wt%, 0.1 wt% or more and 15 wt%, 0.2 wt% or more and 15 wt%, 0.3 wt% or more and 15 wt%, 0.4 wt% or more and 15 wt%, 0.5 wt% or more and 10 wt%, 1 wt% or more and 10 wt%, 1 wt% or more and 8 wt%, 1 wt% or more and 7 wt%, 3 wt% or more and 7 wt%, 4 wt% or more and 7 wt%, or 4 wt% or more and 6 wt% based on the total weight of the cosmetic composition.

[0013] The above pearl may be a fine mineral or synthetic particle that reflects light to produce a sparkling effect, and is not limited thereto, the pearl may be mica, and the mica may be further included in an amount of 0.1 to 7 weight%, 0.5 to 7 weight%, 1 to 7 weight%, 2 to 7 weight%, 2 to 6 weight%, 3 to 6 weight%, or 4 to 6 weight% relative to the total weight of the cosmetic composition.

[0014] The above cosmetic composition may further comprise purified water, a preservative, a stabilizer, a solubilizer, a surfactant, a diluent, a fragrance, a sunscreen, other powders, or a combination thereof. Additionally, the cosmetic composition according to one embodiment may further comprise any conventional cosmetic ingredient selected from additional ingredients commonly used in cosmetics, such as moisturizers, emulsifiers, dispersants, fillers, preservatives, antiseptics, neutralizing agents, sweeteners, vitamins, antioxidants, and mixtures thereof. The sunscreen may include those commonly used in cosmetic compositions and may be an inorganic sunscreen, an organic sunscreen, or a combination thereof.

[0015] In addition, the cosmetic composition may contain dehydroacetic acid in an amount of 0.05 to 2 weight%, 0.05 to 1 weight%, 0.05 to 0.5 weight%, 0.1 to 0.5 weight%, 0.2 to 0.5 weight%, or 0.2 to 0.4 weight%, and may further contain 1,2-hexanediol in an amount of 0.05 to 0.5 weight%, 0.1 to 0.5 weight%, 0.1 to 0.4 weight%, or 0.1 to 0.3 weight% relative to the total weight of the cosmetic composition.

[0016] In addition, the cosmetic composition may further include a plate-shaped or spherical extender pigment, and the plate-shaped or spherical extender pigment may be silica. The silica may be further included in an amount of 0.1 to 2 weight%, 0.5 to 2 weight%, or 0.5 to 1.5 weight%, preferably 1 weight%, based on weight.

[0017] A cosmetic composition of one aspect may not include a liquid binder. In the present invention, the liquid binder may refer to a liquid component added to bind powder particles together and to impart adhesiveness and a sense of unity to the product, and may not include, for example, liquid form of hexyl laurate, diisostearyl malate, phenyl trimethicone, caprylic / capric / triglyceride, triethylhexanoin, dipentaerythrityl hexahydroxystearate / hexastearate / hexarosinate, or bis-diglyceryl polyacyladipate-2.

[0018] A person skilled in the art may select any additional component and / or the amount thereof so that the advantageous properties of the composition according to this specification are not adversely affected or substantially affected by the expected addition. The amount of said additional component can be easily selected by a person skilled in the art within a range that does not impair the purpose and effect of the present invention, and the amount may be about 0.001 to about 30 weight%, specifically about 0.01 to about 25 weight%, based on the total weight of the composition.

[0019] In one embodiment, the mixing step may be a mixing step using a mixer. The mixer refers to a mixer capable of mixing cosmetic compositions, and may be used without limitation as long as it is a general mixer used in the cosmetics field. Additionally, the mixing step using the mixer may be performed for 1 minute to 5 minutes, 1 minute to 4 minutes, or 2 minutes to 4 minutes under conditions of 1000 to 2000 rpm, 1200 to 2000 rpm, 1400 to 2000 rpm, 1400 to 1800 rpm, 1400 to 1700 rpm, or 1400 to 1600 rpm.

[0020] In one embodiment, the molding pressure of the step of compression molding the mixture may be 12 to 28 N, 14 to 28 N, 14 to 26 N, 14 to 24 N, 16 to 24 N, 16 to 22 N, 18 to 22 N, or 20 N.

[0021] In addition, the particle size of the raw material used in the above cosmetic composition may be 5 to 50 μm, 5 to 40 μm, 10 to 40 μm, 10 to 35 μm, 10 to 35 μm, or 10 to 30 μm.

[0022] The cosmetic composition may be in the form of a tablet. The tablet may have a thickness of 0.6 to 15 mm, 0.6 to 12 mm, 0.6 to 9 mm, 0.6 to 8 mm, 0.6 to 7 mm, 0.6 to 6 mm, 0.6 to 5 mm, 0.6 to 4 mm, 0.6 to 3 mm, 0.6 to 2 mm, 0.8 to 1.8 mm, 0.8 to 1.6 mm, or 0.9 to 1.6 mm and may have molding stability.

[0023] In addition, the tablet shape described above can be formed using various molds, such as circular, heart-shaped, star-shaped, flower-shaped, teardrop-shaped, lip-shaped, square, or polygonal shapes, in addition to a general oval shape, thereby enabling the possibility of molding various designs. The polygon may be in the shape of a triangle, square, pentagon, hexagon, octagon, decagon, etc., but is not limited thereto.

[0024] Another aspect provides a tablet-type cosmetic composition manufactured by the above-described manufacturing method. Effects of the invention

[0025] A cosmetic composition and a method for manufacturing the same according to one aspect can reduce manufacturing time and increase production efficiency by simplifying existing complex manufacturing processes. Furthermore, by using a tablet molding machine, products of uniform size and shape can be manufactured, thereby ensuring quality stability and uniformity. In addition, since the product is provided in a form that can be easily used without a dish container, it can enhance consumer convenience and satisfaction. Brief explanation of the drawing

[0026] Figure 1 is a diagram showing the manufacturing process of the present invention. Figure 2 is a flowchart illustrating a method for manufacturing a cosmetic composition of one aspect. Specific details for implementing the invention

[0027] The present invention will be explained in more detail below through examples. However, these examples are intended to illustrate the invention and the scope of the invention is not limited to these examples.

[0028] As used herein, the singular form may include the plural form unless the context clearly indicates otherwise. Additionally, as used herein, “comprise, include” and / or “comprising, including” specify the presence of the mentioned features, numbers, steps, actions, parts, elements, and / or groups thereof, and do not exclude the presence or addition of one or more other features, numbers, actions, parts, elements, and / or groups.

[0030] Preparation Example

[0031] Preparation Example 1. Preparation of a cosmetic composition of one aspect

[0032] To prepare a cosmetic composition of one aspect, the ingredients of Table 1 below were prepared. As shown in FIG. 2, the cosmetic composition was prepared through a mixing step and a molding step.

[0033] Example 1 Comparative Example 1 Comparative Example 1-1 Microcrystalline Cellulose To100 To100 To100 Powdered thickening agent (Hydroxypropylmethylcellulose) 0 0 10 Pearl (Mica) 5 10 5 absorbent (silica) 1 2 0 pigment Organic pigment 1 1 1 Iron oxide pigment 0.5 0.5 0.5 antiseptic Dehydroacetic acid 0.3 0.3 0.3 1,2-Hexanediol 0.2 0.2 0.2 Total amount 100 100 100

[0034] Specifically, each component of Table 1 above was prepared in powder form. The prepared powder was ground twice in a grinder. The ground components, excluding the preservative, were mixed using a Henschel mixer at 1800 rpm for 2 minutes (first mixing). After adding the preservative to the mixture, it was mixed once again using a Henschel mixer under the same conditions for 2 minutes (second mixing).

[0036] Experimental Example

[0037] Experimental Example 1. Confirmation of physical properties of cosmetic composition according to main ingredient

[0038] An experiment was prepared to verify physical properties when a similar ingredient was used in addition to microcrystalline cellulose, which is the main ingredient of a cosmetic composition manufactured by one aspect of the manufacturing method. For moldability, stability, and spreadability, a high score (maximum 3 points) was assigned if they were excellent, and a low score (minimum 0 points) was assigned if they were not. For the raw materials, commercially available ingredients in the cosmetics field were used, and numbers such as 1, 2, and 3 were used when different types of products were used.

[0039] Ingredient Name (INCI) Plasticity stability Spreadability Particle size characteristic Ethylcellulose 1 3 3 0 - Large and rough Ethylcellulose 2 3 3 0 - Large and rough Ethylcellulose 3 3 3 0 - Large and rough Synthetic Wax 3 3 0 - Large and rough Cellulose Acetate 1 1 2 18.5-23 μm Lack of plasticity Microcrystalline Cellulose 1 2 2 3 10-15 μm Medium formability, high unit price Microcrystalline Cellulose 2 3 3 2 17-27 μm Excellent moldability, spreadability, and low unit price

[0040] As a result, it was confirmed that ethyl cellulose and synthetic wax possessed excellent moldability and stability. However, they were not suitable for tablet-type cosmetics because they were large, rough, and had poor spreadability. In the case of cellulose acetate, it had an appropriate level of spreadability but lacked moldability. It was confirmed that a cosmetic composition prepared using microcrystalline cellulose as the main ingredient had an appropriate level of moldability and spreadability and could be manufactured at a low cost. Therefore, among the above ingredients, a cosmetic composition was prepared using microcrystalline cellulose as the main ingredient.

[0042] Experimental Example 2. Confirmation of physical properties of cosmetic composition according to molding conditions

[0043] The physical properties of the cosmetic composition prepared in Preparation Example 1 above were verified while varying the molding pressure. As a result, the results shown in Table 3 below were confirmed.

[0044] division Forming pressure (N) Hardness (kg / cm²) Spreadability Powder scattering Damage level Examples 10 30~50 4 2 4 20 50~70 3 4 5 30 70~90 2 5 5 Comparative Example 1 10 20~40 5 2 2 20 40~60 4 4 4 30 60~80 2 4 5 Comparative Example 1-1 10 40~60 2 5 4 20 60~80 1 5 5 30 80~100 1 5 5

[0045] Spreadability was indicated as follows: 5 for extensive spread, 4 for moderate spread, 3 for moderate spread, 2 for almost no spread, and 1 for no spread. Powder scattering was indicated as follows: 5 for no powder scattering, 4 for almost no powder scattering, 3 for slight powder scattering, 2 for significant powder scattering, and 1 for very significant powder scattering. Damage level was indicated as follows: 5 for no damage, 4 for damage rate within 5%, 3 for damage rate 5~10%, 2 for damage rate 10~20%, and 1 for damage rate 20% or more. Among the above conditions, 3 (moderate spread) corresponds to the best value for spreadability. As a result of the above experiment, it was confirmed that as the molding pressure was increased during the molding stage, hardness increased, powder scattering decreased, and the damage level of the manufactured cosmetic composition decreased. However, since spreadability decreased at the same time, it was confirmed that the most appropriate level of cosmetic composition could be manufactured under a molding pressure of 20N.

[0047] Experimental Example 3. Confirmation of physical properties of cosmetic composition according to dosage

[0048] The physical properties according to the volume of the cosmetic composition prepared with the optimal molding pressure confirmed in Experimental Example 2 above were verified. During the experiment, thicknesses of 0.5 mm or less were too thin and broke immediately during hardness measurement, making it impossible to measure the hardness.

[0049] division Forming pressure volume thickness hardness Spreadability Powder scattering Damage level Examples 20 0.15~0.18g 0.5mm or less Unmeasurable 3 2 1 0.2~0.3g 1~1.5mm 60~70 3 4 5 0.35~0.5g 2mm or more 60~70 3 4 5

[0050] As a result, it was confirmed that cosmetic compositions manufactured to a thickness exceeding 0.5 mm did not break under molding pressure while having no powder scattering whatsoever. When the volume is continuously increased, the thickness can exceed 15 mm while maintaining similar physical properties; however, in this case, molding stability decreases, and since it appears thick externally, it did not appear to be an appropriate volume.

[0052] Experimental Example 4. Confirmation of characteristics of cosmetic composition according to content

[0053] Through the experiments performed in Examples 2 and 3 above, the optimal molding pressure and the thickness of the cosmetic composition were established. While maintaining these conditions and the types of cosmetic ingredients, changes in physical properties or texture were confirmed by varying the content of pearl (Comparative Example 2), silica (Comparative Example 3), or thickener (Comparative Example 4). The content of each ingredient in the cosmetic composition is as shown in Tables 5 to 7 below.

[0054] Comparative Example 2 Comparative Example 2-1 Comparative Example 2-2 Microcrystalline cellulose To100 To100 To100 Powdered thickener 0 0 0 pearl 0 7 10 absorbent 1 1 1 pigment organic pigments 1 1 1 iron oxide pigment 0.5 0.5 0.5 antiseptic Dehydroacetic acid 0.3 0.3 0.3 1,2-hexanediol 0.2 0.2 0.2 Total amount 100 100 100

[0055] Comparative Example 3 Comparative Example 3-1 Comparative Example 3-2 Microcrystalline cellulose To100 To100 To100 Powdered thickener 0 0 0 pearl 5 5 5 absorbent 0 2 3 pigment organic pigments 1 1 1 iron oxide pigment 0.5 0.5 0.5 antiseptic Dehydroacetic acid 0.3 0.3 0.3 1,2-hexanediol 0.2 0.2 0.2 Total amount 100 100 100

[0056] The physical properties and usability of the cosmetic compositions prepared according to the conditions of Tables 5 and 6 above were verified, and the results are shown in Tables 7 and 8 below.

[0057] Example 1 Comparative Example 2 Comparative Example 2-1 Comparative Example 2-2 Verification of physical properties Hardness (kg / cm²) 50~70 55~75 45~65 40~60 Drop damage level 5 5 4 3 User experience evaluation User experience 5 4 4 3 Application amount 4 3 4 5 Powder scattering 5 5 4 3 Adhesion 4 4 3 2

[0058] Example 1 Comparative Example 3 Comparative Example 3-1 Comparative Example 3-2 Verification of physical properties Hardness (kg / cm²) 50~70 55~75 40~60 30~50 Drop damage level 5 5 4 2 User experience evaluation User experience 5 4 4 3 Application amount 4 3 4 5 Powder scattering 5 5 4 3 Adhesion 4 5 3 2

[0059] As a result, regarding the pearl content (Comparative Examples 2 to 2-2), 0 to 5 weight% was found to be an appropriate level, 7 weight% or more caused slight breakage and dust scattering, and 10 weight% or more was not suitable for use as a cosmetic composition due to the risk of breakage and the large amount of coating.

[0060] In the case of silica content (Comparative Examples 3 to 3-2), it was confirmed that 0 to 1 weight% was appropriate, and at 2 weight% or more, slight breakage and dusting were observed, and at 3 weight% or more, severe breakage occurred and the large amount of coating resulted in a dry feeling during use.

[0061] Through the results above, it was confirmed that the cosmetic composition having the composition ratio of Example 1 of one aspect has the most significant level of usability and physical properties. Explanation of the symbols

[0062] S10: 1st mixing step S20: Second mixing step S30: Molding stage

Claims

Claim 1 A step of preparing a mixture by mixing microcrystalline cellulose, pigment, and pearl; A method for preparing a cosmetic composition in the form of a tablet, comprising the step of compression molding the above mixture, wherein the cosmetic composition does not contain a liquid binder, and the liquid binder is water, alcohol, hexyl laurate, diisostearyl malate, phenyl trimethicone, caprylic / capric / triglyceride, triethylhexanoin, dipentaerythrityl hexahydroxystearate / hexastearate / hexarosinate, or bis-diglyceryl polyacyladipate-2, and the microcrystalline cellulose is 70 to 70% of the total weight of the entire cosmetic composition A method of manufacturing comprising 99 weight%, wherein the thickness of the cosmetic composition is 0.6 to 15 mm. Claim 2 delete Claim 3 delete Claim 4 A method of manufacturing according to claim 1, wherein the pigment is included in an amount of 0.01% by weight or more and 20% by weight relative to the total weight of the entire cosmetic composition. Claim 5 A method of manufacturing according to claim 1, wherein the cosmetic composition further comprises a plate-shaped or spherical extender pigment and a preservative. Claim 6 A method of manufacturing according to claim 5, wherein the plate-shaped or spherical extender pigment is silica. Claim 7 A method of manufacturing according to claim 5, wherein the preservative is one or more selected from the group consisting of dehydroacetic acid and 1,2-hexanediol. Claim 8 A method of manufacturing according to claim 1, wherein the cosmetic composition has molding stability. Claim 9 A method of manufacturing according to claim 1, wherein the cosmetic composition has a circular, heart-shaped, star-shaped, flower-shaped, teardrop-shaped, lip-shaped, square, or polygonal shape. Claim 10 delete Claim 11 delete Claim 12 A manufacturing method according to claim 1, wherein the mixing step is performed for 1 minute to 5 minutes under conditions of 1200 to 2400 rpm. Claim 13 A method of manufacturing according to claim 1, wherein the particle size of the cosmetic composition is 5 to 50 μm. Claim 14 delete Claim 15 delete Claim 16 delete Claim 17 delete

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