Sheet-type cosmetic

Abstract

The present invention relates to a sheet-type cosmetic composition that exhibits excellent powder transferability during pressing and wiping, and uniformity of the transferred powder (powder dispersion in the sheet) after long-term retention. [Solution] A sheet-like cosmetic according to one embodiment of the present invention is a sheet-like cosmetic obtained by impregnating a sheet with a liquid composition, comprising a sheet and a liquid composition. The sheet comprises a first hydrophilic layer which is a hydrophilic woven or nonwoven fabric, a second hydrophilic layer which is a hydrophilic woven or nonwoven fabric, and a hydrophobic layer which is a hydrophobic woven or nonwoven fabric sandwiched between the first hydrophilic layer and the second hydrophilic layer. The liquid composition contains the following components (A), (B) and water. (A) Hydrophilic powder (B) Silicone-based surfactants

Description

[Technical Field]

[0001] This invention relates to a sheet-like cosmetic composition. [Background technology]

[0002] Sheet-type cosmetics have a structure in which a liquid composition containing cosmetic ingredients is impregnated into a sheet, and are used to wipe away sweat, sebum, and other substances adhering to the skin. Users tend to place importance on the feel of the product, and as described in Patent Documents 1 and 2, sheet-type cosmetics have been developed that contain powders such as porous silica in the liquid composition, allowing sweat and sebum to be adsorbed onto the powder. [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2006-151829 [Patent Document 2] Japanese Patent Publication No. 2007-176813 [Overview of the project] [Problems that the invention aims to solve]

[0004] However, with sheet-type cosmetics as described in Patent Documents 1 and 2, if the pressure applied to the skin surface is small, the amount of liquid composition seeping out from the sheet-type cosmetic may be insufficient, and the amount of powder transferred from the sheet to the skin surface may also be insufficient. In particular, when wiping skin that has makeup applied with a sheet-type cosmetic, if the sheet-type cosmetic is pressed firmly against the skin surface and moved sideways, the makeup will be removed. For this reason, a "press-wipe" method is used, in which the sheet-type cosmetic is lightly pressed against the skin surface and wiped without moving sideways. However, in this case, the pressure applied to the skin surface is small, and the amount of powder transferred tends to be insufficient.

[0005] The present invention relates to a sheet-type cosmetic composition that exhibits excellent powder transferability during pressing and wiping, and uniformity of the transferred powder (powder dispersion in the sheet) after long-term retention. [Means for solving the problem]

[0006] A sheet-like cosmetic composition according to one embodiment of the present invention is a sheet-like cosmetic composition in which a liquid composition is impregnated into a sheet, comprising a sheet and a liquid composition. The sheet comprises a first hydrophilic layer which is a hydrophilic woven or nonwoven fabric, a second hydrophilic layer which is a hydrophilic woven or nonwoven fabric, and a hydrophobic layer which is a hydrophobic woven or nonwoven fabric sandwiched between the first hydrophilic layer and the second hydrophilic layer. The liquid composition contains the following components (A), (B), and water. (A) Hydrophilic powder (B) Silicone-based surfactants

[0007] In one embodiment of the present invention, a packaging material contains a sheet-like cosmetic in which a liquid composition is impregnated into a sheet. The aforementioned sheet-like cosmetic composition comprises a sheet and a liquid composition. The sheet comprises a first hydrophilic layer which is a hydrophilic woven or nonwoven fabric, a second hydrophilic layer which is a hydrophilic woven or nonwoven fabric, and a hydrophobic layer which is a hydrophobic woven or nonwoven fabric sandwiched between the first hydrophilic layer and the second hydrophilic layer. The liquid composition contains the following components (A), (B), and water. (A) Hydrophilic powder (B) Silicone-based surfactants [Effects of the Invention]

[0008] According to the present invention, it is possible to provide a sheet-type cosmetic material that exhibits excellent powder transferability during pressing and wiping, and uniformity of the transferred powder (powder dispersion in the sheet) after long-term retention. [Brief explanation of the drawing]

[0009] [Figure 1] This is a schematic diagram of the sheet comprising the sheet-like cosmetic material according to this embodiment. [Figure 2]It is a schematic diagram showing the state of retention of hydrophilic powder by a sheet in the sheet-shaped cosmetic according to this embodiment. [Figure 3] It is a schematic diagram of the sheet-shaped cosmetic according to this embodiment. [Figure 4] It is a schematic diagram showing non-liquid components contained in the sheet-shaped cosmetic according to this embodiment and transferred onto the skin. [Figure 5] It is a schematic diagram of a package in which the sheet-shaped cosmetic according to this embodiment is packaged. [Figure 6] It is an image of powder transferred from the sheet-shaped cosmetic according to Example 1 of the present invention. [Figure 7] It is an image of powder transferred from the sheet-shaped cosmetic according to Comparative Example 2 of the present invention. [Mode for Carrying Out the Invention]

[0010] Hereinafter, embodiments of the present invention will be described. The present invention is not limited only to the embodiments shown below, and various modifications can be made without departing from the gist of the present invention.

[0011] [Overall Configuration of Sheet-Shaped Cosmetic] The sheet-shaped cosmetic according to this embodiment is a sheet preparation including a sheet and a liquid composition impregnated in the sheet. Note that "impregnated" includes not only the case where the liquid composition is impregnated into the sheet by immersion, but also the state where the liquid composition is infiltrated into the sheet by spraying or a nozzle or the like, or the state where it is held. Further, "liquid" means a substance that is liquid at 25°C, for example, having a viscosity of 20,000 mPa·s or less at 25°C is indicated. Hereinafter, "the sheet according to this embodiment" will be simply referred to as "sheet", and "the liquid composition according to this embodiment" will be simply referred to as "liquid composition".

[0012] [Configuration of Sheet] FIG. 1 is a schematic diagram of a sheet 10 included in the sheet-shaped cosmetic according to this embodiment. As shown in the figure, the sheet 10 includes a first hydrophilic layer 11, a second hydrophilic layer 12, and a hydrophobic layer 13.

[0013] The first hydrophilic layer 11 is a hydrophilic woven or nonwoven fabric. A hydrophilic woven or nonwoven fabric contains 50% by mass or more of hydrophilic fibers, preferably 70% by mass or more, and more preferably 100% by mass. The hydrophilic fibers forming the first hydrophilic layer 11 may be fibers whose fiber surface is inherently hydrophilic, or fibers whose fiber surface is inherently hydrophobic but has been treated to impart hydrophilicity. Examples of fibers whose fiber surface is inherently hydrophilic include rayon, cotton, cupro, lyocell, natural cellulose fibers and regenerated cellulose fibers such as wood pulp, and silk. These fibers can be used individually or in combination of two or more.

[0014] Specifically, the hydrophilic fibers forming the first hydrophilic layer 11 preferably include one or more selected from rayon and cotton, more preferably include rayon, and even more preferably be rayon. Rayon is particularly preferred because it has excellent powder transfer properties when wiped. Furthermore, although the fiber surface is inherently hydrophobic, examples of fibers that have been given hydrophilicity by hydrophilization treatment include fibers made of thermoplastic resins with fiber-forming ability, such as polyolefin resins, acrylic resins, and polyester resins, to which a hydrophilizing agent has been applied.

[0015] The second hydrophilic layer 12 is a hydrophilic woven or nonwoven fabric. A hydrophilic woven or nonwoven fabric is one that contains 50% by mass or more hydrophilic fibers, preferably 70% by mass or more, and more preferably 100% by mass. The hydrophilic fibers forming the second hydrophilic layer 12 may be fibers whose fiber surface is inherently hydrophilic, similar to the hydrophilic fibers forming the first hydrophilic layer 11, or they may be fibers whose fiber surface is inherently hydrophobic but has been subjected to a hydrophilic treatment to impart hydrophilicity. Specifically, the fibers listed as hydrophilic fibers forming the first hydrophilic layer 11 can be used. The hydrophilic fibers forming the second hydrophilic layer 12 may be the same as or different from the hydrophilic fibers forming the first hydrophilic layer 11.

[0016] The hydrophobic layer 13 is a hydrophobic woven or nonwoven fabric. A hydrophobic woven or nonwoven fabric contains 70% by mass or more hydrophobic fibers, preferably 90% by mass or more, and more preferably 100% by mass. As shown in Figure 1, the hydrophobic layer 13 is sandwiched between a first hydrophilic layer 11 and a second hydrophilic layer 12. Examples of hydrophobic fibers forming the hydrophobic layer 13 include acrylic resins such as polymethacrylate and polyacrylonitrile, polyamides such as polyester, polyethylene (PE), polypropylene (PP), polyurethane, and nylon, and fibers made from thermoplastic resins such as polyethylene terephthalate (PET). Composite fibers containing two or more of these thermoplastic resins can also be used.

[0017] Specifically, the hydrophobic fibers forming the hydrophobic layer 13 are preferably composed of one or more selected from polypropylene, polyethylene, and polyethylene terephthalate; more preferably composed of one or more selected from polypropylene and polyethylene; and even more preferably composed of polypropylene and polyethylene. In particular, the hydrophobic layer 13 is preferably formed by heat-fusing polypropylene fibers and polyethylene fibers.

[0018] The first hydrophilic layer 11, the second hydrophilic layer 12, and the hydrophobic layer 13 may simply be laminated together, or they may be fixed together. Methods of fixing include fixing by entanglement of fibers using the spunlace method, embossing, heat fusion, and ultrasonic fusion.

[0019] The basis weight of each layer—the first hydrophilic layer 11, the second hydrophilic layer 12, and the hydrophobic layer 13—is set to an average basis weight of 5 g / m², from the viewpoint of ensuring good retention of the liquid composition and a good tactile feel. 2 More than 100g / m 2 The following is preferable, 10 g / m 2 More than 80g / m 2 The following is more preferable: 15g / m 2 More than 40g / m 2 The following is even more preferable. The average basis weight is determined in accordance with JIS L 1913, by cutting the sheet to a certain area and measuring its mass, and using this as the basis weight per 1 m². 2 It can be calculated by converting it to its mass.

[0020] The thickness of the sheet 10 is preferably 0.2 mm to 1.0 mm, more preferably 0.25 mm to 0.8 mm, and even more preferably 0.3 mm to 0.7 mm, from the viewpoint of good retention of the liquid composition and tactile feel during wiping. The sheet thickness is suitable for a pressure of 20 gf / cm². 2 The load is obtained by measuring it with a dial gauge. The shape and size of the sheet should be such that it is easy to wipe the skin, such as the face, and can be rectangular, for example, with sides of 3 cm to 30 cm.

[0021] As shown in Figure 1, the surface of the first hydrophilic layer 11 is provided with an uneven pattern consisting of recesses 11a and protrusions 11b, while the surface of the second hydrophilic layer 12 can be flat. Alternatively, the surface of the second hydrophilic layer 12 may also be provided with an uneven pattern. Furthermore, both the surface of the first hydrophilic layer 11 and the surface of the second hydrophilic layer 12 may be flat.

[0022] [Composition of the liquid composition] The liquid composition of the sheet-like cosmetic according to this embodiment contains component (A), component (B), component (C), and water. Table 1 below shows an example of the composition of this liquid composition.

[0023] [Table 1]

[0024] Component (A) is a hydrophilic powder. A hydrophilic powder, as used here, is generally defined as a powder that, when mixed with water, mixes well and settles or disperses in the water. A hydrophobic powder, on the other hand, is generally defined as a powder that, when mixed with water, does not mix quickly and floats on the water surface. Porous silica or talc can be used as the hydrophilic powder, and a mixture of multiple types of powders made from different materials may also be used. The shape of the hydrophilic powder is not particularly limited, and can be spherical, plate-shaped, etc., and may be a mixture of multiple types of powders with different shapes.

[0025] From the viewpoint of good feel during and after use of the sheet-type cosmetic, the hydrophilic powder of component (A) preferably contains spherical powders with a particle size of 0.2 μm to 25 μm, more preferably contains powders with an average particle size of 0.5 μm to 20 μm, even more preferably contains powders with an average particle size of 1 μm to 15 μm, and even more preferably contains powders with an average particle size of 3 μm to 12 μm. In the case of plate-type powders, it is preferable that the volume median particle size (D50) is 5.0 μm to 20 μm and the aspect ratio (D50 (μm) / average thickness of powder (μm)) is 6.0 to 15.0. From the viewpoint of good feel during and after use of the sheet-type cosmetic, the hydrophilic powder of component (A) preferably contains both spherical and plate-type powders.

[0026] In this embodiment, the particle size of the hydrophilic powder of component (A) is the particle size measured in accordance with JIS Z 8832:2010 using a "Coulter Counter Multisizer" (manufactured by Beckman Coulter), and the average particle size is the volume-based median diameter (D50) obtained by measurement. The same applies to each of the following average particle sizes.

[0027] In the liquid composition, the hydrophilic powder content of component (A) is preferably 0.8% to 20% by mass, more preferably 1.5% to 11% by mass, and even more preferably 3.5% to 8% by mass, from the viewpoint of improving the feel after using the sheet-type cosmetic. Particularly from the viewpoint of good feel during and after use of the sheet-type cosmetic, the spherical powder content of component (A) is preferably 0.4% to 15% by mass, more preferably 2% to 7% by mass, and even more preferably 2% to 4% by mass. Similarly, the plate-like powder content of component (A) is preferably 0.4% to 8% by mass, more preferably 2% to 6% by mass, and even more preferably 2% to 4% by mass.

[0028] Specifically, porous silica that can be used in the hydrophilic powder of component (A) includes "Sunsphere® H-32" (manufactured by AGC SI-TEC, average particle size: 3 μm, oil absorption: 300 mL / 100 g), "Sunsphere® H-51" (manufactured by AGC SI-TEC, average particle size: 5 μm, oil absorption: 150 mL / 100 g), "Sunsphere® H-52" (manufactured by AGC SI-TEC, average particle size: 5 μm, oil absorption: 300 mL / 100 g), "Sunsphere® H-122" (manufactured by AGC SI-TEC, average particle size: 12 μm, oil absorption: 300 mL / 100 g), "Sunsphere® H-33" (manufactured by AGC SI-TEC, average particle size: 3 μm, oil absorption: 400 mL / 100 g), and "Sunsphere® H-53" (manufactured by AGC SI Tech, average particle size: 5 μm, oil absorption: 400mL / 100g), "Sunsphere (registered trademark) H-121” (manufactured by AGC SI Tech, average particle size: 12 μm, oil absorption: 150 mL / 100 g), “BA4” (manufactured by JGC Catalysts & Chemicals, average particle size: 4 μm, oil absorption: 50 mL / 100 g), “SILICA MICROBEAD "P-500" (manufactured by JGC Catalysts & Chemicals, average particle size: 2μm, oil absorption: 60mL / 100g), "SILICA MICROBEAD L-1500" (manufactured by JGC Catalysts & Chemicals, average particle size: 11μm, oil absorption: 120mL / 100g) or "SILICA MICROBEAD P-4000” (manufactured by JGC Catalysts & Chemicals Co., Ltd., average particle size: 20 μm, oil absorption amount A quantity of 60 mL / 100 g can be used. In addition, as a talc that can be used in the hydrophilic powder of component (A), specifically "JA-68R" (manufactured by Asada Flour Milling Co., Ltd.) can be used. The amount of oil supplied to each hydrophilic powder depends on the amount of boiled linseed oil absorbed, according to JIS K5101-13-2 (established in 2004).

[0029] Component (B) is a silicone-based surfactant. The silicone-based surfactant includes at least one selected from polyether-modified silicone, polyglycerin-modified silicone, polyether-alkyl-modified silicone, polyglycerin-alkyl-modified silicone, oxazoline-modified silicone, and alkylglyceryl ether-modified silicone, and is preferably polyether-modified silicone.

[0030] Polyether-modified silicones have a structure in which the hydrocarbon groups at the side chains and / or terminals of a silicone oil are replaced with polyether groups. Suitable polyether groups for polyether-modified silicones are polyethylene oxy groups, polypropylene oxy groups, and polyalkylene oxy groups in which ethylene oxy groups (EO) and propylene oxy groups (trimethylene oxy groups or propane-1,2-diyl oxy groups; PO) are added in a block-like or random manner; polyethylene oxy groups are more preferred. As polyether-modified silicones, compounds in which polyether groups are grafted onto a silicone main chain, compounds in which silicone and polyether groups are bonded in a block-like manner, and the like can be used.

[0031] Examples of polyether-modified silicones include PEG-10 dimethicone (polyoxyethylene methylpolysiloxane copolymer), PEG / PPG-20 / 22 butyl ether dimethicone (poly(oxyethylene oxypropylene) methylpolysiloxane copolymer), and PEG-11 methyl ether dimethicone (polyoxyethylene methylpolysiloxane copolymer).

[0032] Examples of commercially available polyether-modified silicones include, for example, Shin-Etsu Chemical Co., Ltd.'s "KF series" (e.g., "KF-6004", "KF-6011", "KF-6012", "KF-6013", "KF-6015", "KF-6016", "KF-6017", "KF-6028", "KF-6038", "KF-6043", "KF-6048") and Dow Chemical Japan Ltd.'s "DOWSIL series" ("BY25-339", "SH3775M", "FZ-2203").

[0033] Here, HLB (hydrophilic-lipophilic balance) is used.<Hydrophilic-Lipophilic Balance> ) represents the molecular weight of the hydrophilic group portion of the total molecular weight of the surfactant, and for nonionic surfactants, it is determined by Griffin's formula. The HLB of a mixed surfactant composed of two or more nonionic surfactants is obtained by the phase-averaging of the HLB values ​​of each nonionic surfactant based on their blending ratio. Mixed HLB = Σ(HLBx × Wx) / ΣWx HLBx represents the HLB value of nonionic surfactant X. Wx represents the weight (g) of nonionic surfactant X having the value of HLBx. The HLB of the liquid composition according to this embodiment is preferably 4.5 or more and 9 or less, more preferably 4.5 or more and 5 or less, and even more preferably 4.5.

[0034] In the liquid composition according to this embodiment, as shown in Figure 2, it is believed that the silicone-based surfactant 22 of component (B) coats the hydrophilic powder 21 of component (A), thereby imparting hydrophobicity to the surface of the hydrophilic powder 21. As a result, hydrophobic interactions occur between the hydrophilic powders 21 in the liquid composition, and multiple hydrophilic powders 21 are bound together by weak forces due to the hydrophobic effect, allowing them to exist as large-diameter secondary particles 23. Because these secondary particles 23 are hydrophobic, they are less likely to decompose in the presence of water in the liquid composition.

[0035] Therefore, in the sheet-like cosmetic composition according to this embodiment, secondary particles 23 that cannot pass through the gaps between the fibers 31 constituting the sheet 10 can be stably held by the fibers 31. The fibers 31 are the fibers that make up the first hydrophilic layer 11, the second hydrophilic layer 12, and the hydrophobic layer 13, respectively. As a result, in the sheet-like cosmetic composition according to this embodiment, even when a large amount of liquid composition is impregnated into the sheet 10, the uniform dispersion state of the hydrophilic powder in the sheet 10 is easily maintained over a long period of time.

[0036] The content of component (B) in the liquid composition is preferably 0.02% by mass or more and 2% by mass or less, more preferably 0.02% by mass or more and 1% by mass or less, and even more preferably 0.03% by mass or more and 0.8% by mass or less, from the viewpoint of improving the feel of the sheet-type cosmetic during and after use.

[0037] Component (C) is an anionic polymer. The anionic polymer disperses the hydrophilic powder and suppresses sedimentation due to aggregation. From the viewpoint of suppressing sedimentation of the hydrophilic powder, the content of the anionic polymer in the liquid composition is preferably 0.005% by mass or more and 0.3% by mass or less, more preferably 0.01% by mass or more and 0.1% by mass or less, and even more preferably 0.02% by mass or more and 0.06% by mass or less. Note that component (C) does not necessarily have to be contained in the liquid composition according to this embodiment.

[0038] Examples of anionic polymers include carboxymethylcellulose, carrageenan, xanthan gum, polystyrene sulfonate, agar, gatchigum, karaya gum, pectin, alginate salts, (meth)acrylic acid or its derivatives (co)polymers, hyaluronic acid or its alkali metal salts.

[0039] Among these, examples of (co)polymers of (meth)acrylic acid or its derivatives include polyacrylic acid, sodium polyacrylate, crosslinked polyacrylic acid, crosslinked sodium polyacrylate, acrylic acid / alkyl methacrylate copolymer, carboxyvinyl polymer (carbomer), copolymers and crosspolymers with acryloyldimethyltaurine or its salt as monomer components. Specifically, examples include (sodium acrylate / sodium acryloyldimethyltaurine) copolymer, (hydroxyethyl acrylate / sodium acryloyldimethyltaurine) copolymer, (sodium acrylate / acryloyldimethyltaurine / dimethylacrylamide) crosspolymer, (acrylamide / ammonium acrylate) copolymer, polyacrylate-13, polyacrylate crosspolymer-6, etc., with acrylic acid / alkyl methacrylate copolymer being preferred.

[0040] Specific examples of acrylic acid / alkyl methacrylate copolymers include "AQUPEC HV-501ER" (manufactured by Sumitomo Seika Co., Ltd.), "Carbopol 1342", "Carbopol 1382", "Carbopol ETD2020", "Carbopol Ultrez20", "Carbopol Ultrez21", "Pemlen TR-1", and "Pemlen TR-2" (all manufactured by Lubrizol Advanced Materials).

[0041] The liquid composition further contains water. The water content in the liquid composition may be the remainder after removing components other than water. From the viewpoint of improving the moisture retention of the sheet-type cosmetic and suppressing skin irritation, the water content in the liquid composition is preferably 45% by mass or more and 98% by mass or less, more preferably 55% by mass or more and 75% by mass or less, and even more preferably 60% by mass or more and 75% by mass or less.

[0042] Furthermore, the liquid composition may contain other components as needed. Other components include cationic compounds, ethanol, texture enhancers, preservatives, pH adjusters, humectants, anti-inflammatory agents, whitening agents, UV absorbers, UV scatterers, bactericides, antiperspirants, cooling agents, chelating agents, fragrances, and colorants. Specifically, examples include potassium hydroxide "Liquid Caustic Potassium (48%)" (manufactured by AGC Inc.) as a pH adjuster, "Traceable 95 Grade 1" (manufactured by Nippon Alcohol Industry Co., Ltd.) as ethanol, methylpolysiloxane "Silicone KF-96A-10CS" (manufactured by Shin-Etsu Chemical Co., Ltd.) and methylpolysiloxane "Silicone KF-96A-10CS" (manufactured by Shin-Etsu Chemical Co., Ltd.) as texture enhancers, and phenoxyethanol "Hysolve EPH" (manufactured by Toho Chemical Industry Co., Ltd.) and methyl parahydroxybenzoate "Mekkins® M" (manufactured by Ueno Pharmaceutical Co., Ltd.) as preservatives.

[0043] [Regarding the effects of sheet-type cosmetics] As described above, the sheet-like cosmetic according to this embodiment has a sheet 10 impregnated with a liquid composition. Figure 3 is a schematic diagram of the sheet-like cosmetic 1 according to this embodiment. As shown in the figure, hydrophilic powder 21 contained in the liquid composition is dispersed in each layer of the sheet 10 in the sheet-like cosmetic 1. Here, since the liquid composition is impregnated in large quantities in the first hydrophilic layer 11 and the second hydrophilic layer 12, which have hydrophilic properties, the hydrophilic powder 21 is also distributed in large quantities in the first hydrophilic layer 11 and the second hydrophilic layer 12, and not in large quantities in the hydrophobic layer 13.

[0044] When this sheet-type cosmetic is pressed against the skin and wiped, the liquid composition is transferred to the skin. The liquid component of the liquid composition evaporates rapidly, leaving the non-liquid component and the liquid component held by the non-liquid component on the skin. Figure 4 is a schematic diagram showing the non-liquid component on the skin 50. As shown in the figure, hydrophilic powder 21 of component (A), which is a non-liquid component, adheres to the skin 50, and the hydrophilic powder 21 is coated with silicone-based surfactant 22 of component (B). In this case, the liquid composition is unevenly distributed in the first hydrophilic layer 11 and the second hydrophilic layer 12, so even if the pressure applied to the skin 50 by the sheet-type cosmetic is small, a large amount of hydrophilic powder 21 is transferred to the skin 50 (see Examples).

[0045] As described above, the presence of the hydrophilic powder 21 of component (A) on the skin 50 makes it possible to achieve a high level of smoothness. Furthermore, as shown in Figure 4, the hydrophilic powder 21 of component (A) is coated with the silicone-based surfactant 22 of component (B). The hydrophilic powder 21 coated with the silicone-based surfactant 22 has a reduced coefficient of dynamic friction and good slipperiness. Therefore, it is possible to impart a high level of smoothness to the skin 50.

[0046] Thus, in the sheet-shaped cosmetic 1 according to the present embodiment, even when pressed and wiped with a weak force, a large amount of the liquid composition is released, so that the hydrophilic powder 21 can be transferred to the skin without disturbing the makeup applied to the skin. In addition, in the sheet-shaped cosmetic 1, the hydrophilic powder 21 is not locally unevenly distributed in the sheet 10 but is widely dispersed (see Examples). Therefore, the uniformity of the powder transferred after long-term holding of the sheet-shaped cosmetic 1 (powder dispersibility in the sheet) is also excellent.

[0047] [Package] A package in which the sheet-shaped cosmetic according to the present embodiment is packaged will be described. FIG. 5 is a schematic diagram of this package 100. As shown in the figure, the package 100 has a plurality of sheet-shaped cosmetics 1 and a packaging material 2. In the package 100, the sheet-shaped cosmetics 1 according to the present embodiment are accommodated in the packaging material 2 in a stacked state where they are directly overlapped.

[0048] The packaging material 2 is provided with an opening 2a at a position facing the stacking direction of the sheet-shaped cosmetics. A sealing body S that covers the opening 2a is attached to the packaging material 2. In the package 100, by peeling off at least a part of the sealing body S from the packaging material 2 to open the opening 2a, the sheet-shaped cosmetics 1 can be taken out one by one.

Examples

[0049] Sheet-shaped cosmetics according to Examples and Comparative Examples of the present invention were produced, and the transferability of the hydrophilic powder was evaluated.

[0050] [[ID=2I]](Sheet) Three types of sheets according to Examples and Comparative Examples were produced. These three types of sheets are referred to as "Sheet 1", "Sheet 2", and "Sheet 3". As described in the above embodiment, Sheet 1 has a configuration in which a hydrophobic layer is sandwiched between a first hydrophilic layer and a second hydrophilic layer and fixed by a spunlace manufacturing method. The first hydrophilic layer and the second hydrophilic layer are layers made of rayon fibers (basis weight 20 g / m 2 ) and the hydrophobic layer is a layer obtained by thermally fusing polypropylene (PP) fibers and polyethylene (PE) fibers (basis weight 20 g / m2 It consists of ). The thickness of sheet 1 is 0.51 mm.

[0051] Sheet 2 has a structure in which the second layer is sandwiched between the first and third layers, and the first and third layers are layers made of cotton fibers (basis weight 15.8 g / m²). 2 ), the second layer is a layer made of pulp fibers (basis weight 26.4 g / m²) 2 ) The overall basis weight of the sheet is 58 g / m². 2 The thickness is 0.32 mm. That is, Sheet 2 has a structure in which three hydrophilic layers are laminated. Sheet 3 is a single-layer sheet, a sheet made of a mixture of rayon fibers, PP fibers and PE fibers (basis weight 50 g / m²). 2 (It has a thickness of 0.36 mm.)

[0052] Sheets 1 to 3 described above were impregnated with a liquid composition to prepare sheet-type cosmetic materials. Tables 2 to 5 below show the composition and evaluation results of the sheet-type cosmetic materials for the examples and comparative examples.

[0053] [Table 2]

[0054] [Table 3]

[0055] [Table 4]

[0056] [Table 5]

[0057] (Liquid composition) The liquid compositions impregnated into the sheets in the examples and comparative examples contain one or more of the following as hydrophilic powders (component (A)): "Sunsphere® H-32" (manufactured by AGC SI-TEC, average particle size: 3 μm, oil absorption: 300 mL / 100 g), "Sunsphere® H-51" (manufactured by AGC SI-TEC, average particle size: 5 μm, oil absorption: 150 mL / 100 g), and "JA-68R" (manufactured by Asada Flour Milling Co., Ltd.), which are porous silica; and talc. The content of each component is shown in Tables 2 to 5, and the same applies to the following components.

[0058] Furthermore, except for Comparative Example 1, the above liquid compositions contain, as component (B), a silicone-based surfactant (component (B)), either polyether-modified silicone polyoxyethylene-methylpolysiloxane copolymer "Silicone KF-6017P" (manufactured by Shin-Etsu Chemical Co., Ltd., HLB=4.5), "KF-6004" (manufactured by Shin-Etsu Chemical Co., Ltd., HLB=9), or polyether-modified silicone "SH 3775M" (manufactured by Dow Chemical Japan Co., Ltd., HLB=5).

[0059] Furthermore, with the exception of Example 12, the above liquid compositions contain an acrylic acid / alkyl methacrylate copolymer "Pemlen TR-1" (manufactured by Lubrizol Advanced Materials) as an anionic polymer (component (C)).

[0060] Furthermore, the above liquid composition contains, as other components, water, potassium hydroxide "Liquid Caustic Potassium (48%)" (manufactured by AGC Inc.), ethanol "Traceable 95 Grade 1" (manufactured by Nippon Alcohol Industry Co., Ltd.), methylpolysiloxane "Silicone KF-96A-10CS" (manufactured by Shin-Etsu Chemical Co., Ltd.), methylpolysiloxane "Silicone KF-96A-10CS" (manufactured by Shin-Etsu Chemical Co., Ltd.), phenoxyethanol "Hysolve EPH" (manufactured by Toho Chemical Industry Co., Ltd.), methyl parahydroxybenzoate "Mekkins® M" (manufactured by Ueno Pharmaceutical Co., Ltd.), and polyoxyethylene hydrogenated castor oil "Emanon® CH-60" (manufactured by Kao Corporation).

[0061] (Powder transfer properties when wiping with pressure) For the sheet-like cosmetic compositions of the Examples and Comparative Examples, four sheets of the cosmetic composition were folded and pressed onto black drawing paper with a load of 500g over a 3cm x 3cm area for 5 seconds to transfer the hydrophilic powder. Figure 6 is an image of the hydrophilic powder transferred from the sheet-like cosmetic composition of Example 1 to the black drawing paper. Figure 7 is an image of the powder transferred from the sheet-like cosmetic composition of Comparative Example 2 to the black drawing paper. The images in Figures 6 and 7 were taken with an electron microscope ("VHX-7000" manufactured by Keyence Corporation, magnification 20x).

[0062] Furthermore, for black drawing paper onto which hydrophilic powders were transferred from each sheet-type cosmetic, two 15mm x 11mm areas were taken within the transferred area and photographed with an electron microscope ("VHX-7000" manufactured by Keyence Corporation, 20x magnification). The binarization threshold was adjusted so that the whiteness ratio (percentage of white area) of the image before transfer was 0%, and the whiteness ratio of the image after transfer was determined under the same binarization conditions. This whiteness ratio was defined as the powder transfer ratio. The average powder transfer ratio of the two areas was evaluated as follows: "5" for 6% or more, "4" for 5% or less than 6%, "3" for 3% or less than 5%, "2" for 1% or less than 3%, and "1" for less than 1%, with "3" or higher being considered a pass. The evaluation results are shown in Tables 2 to 5 as "Powder Transferability during Press-Wiping". Image binarization was performed using "ImageJ" software. Note that other image processing software capable of binarization can also be used.

[0063] (Dispersibility of powders in the sheet) Furthermore, the sheet-like cosmetic compositions of the examples and comparative examples were evaluated for their resistance to sedimentation of hydrophilic powders in sheets impregnated with the liquid composition. The specific evaluation method was as follows: First, the liquid composition was impregnated into the sheet by spraying or using a dropper. The sheet was then held at both ends and curved so that the center was indented downwards. In this state, it was sealed in an aluminum pillow and kept for two weeks. After this period, the sheet was pressed onto black drawing paper to transfer the liquid composition. The more widely dispersed the hydrophilic powder was on the black drawing paper and not localized, the less likely sedimentation of the hydrophilic powder was to occur. The evaluation was based on five levels: "Hydrophilic powder is locally localized: 1", "Hydrophilic powder is somewhat locally localized: 3", "Hydrophilic powder is not locally localized: 5", "Intermediate between 1 and 3: 2", and "Intermediate between 3 and 5: 4". The "Powder Dispersibility in Sheet" is shown in Tables 2 to 5.

[0064] (Regarding the evaluation results) As shown in Tables 2 to 5, the sheet-like cosmetic compositions of Examples 1 to 16 had a "powder transferability when pressed and wiped" and a "powder dispersibility in the sheet" of "3" or higher. On the other hand, the sheet-like cosmetic composition of Comparative Example 1 did not contain a silicone-based surfactant (component (B)) in its liquid composition, and had a "powder dispersibility in the sheet" of "2". The sheet-like cosmetic composition of Comparative Example 1 had a sheet 2, which was a sheet with three layers of hydrophilic layers laminated together, and had a "powder transferability when pressed and wiped" of "2". The sheet-like cosmetic composition of Comparative Example 2 had a sheet 3, which was a single layer sheet, and had a "powder transferability when pressed and wiped" of "2". Therefore, it can be said that the sheet-like cosmetic composition according to the present invention has excellent powder transferability when pressed and wiped, as well as excellent uniformity of the transferred powder (powder dispersibility in the sheet) after being held for a long period of time.

[0065] As can be seen in Figures 6 and 7, a larger amount of powder is transferred from the sheet-type cosmetic according to Example 1 (Figure 6) than from the sheet-type cosmetic according to Comparative Example 2 (Figure 7), indicating that the sheet-type cosmetic according to the example has excellent powder transfer properties when pressed and wiped.

[0066] Furthermore, the sheet-like cosmetic composition according to Example 12 does not contain an anionic polymer (component (C)) in its liquid composition, while the sheet-like cosmetic compositions according to the other examples contain an anionic polymer (component (C)) in their liquid composition. The sheet-like cosmetic composition according to Example 12 had a "powder dispersibility in the sheet" of "3," while the sheet-like cosmetic compositions according to the other examples had a "powder dispersibility in the sheet" of "3 to 5." Therefore, the sheet-like cosmetic composition according to the present invention is more preferably one in which the liquid composition contains an anionic polymer (component (C)). [Explanation of Symbols]

[0067] 1…Sheet-type cosmetic 10...sheets 11...First hydrophilic layer 12...Second hydrophilic layer 13…Hydrophobic layer 21…Hydrophilic powder 22…Silicone-based surfactants

Claims

1. A sheet-type cosmetic in which a liquid composition is impregnated into a sheet, A sheet comprising: a first hydrophilic layer which is a hydrophilic woven or nonwoven fabric; a second hydrophilic layer which is a hydrophilic woven or nonwoven fabric; and a hydrophobic layer which is a hydrophobic woven or nonwoven fabric sandwiched between the first hydrophilic layer and the second hydrophilic layer. A liquid composition containing the following components (A), (B), and water A sheet-type cosmetic product containing [the specified features]. (A) Hydrophilic powder (B) Silicone-based surfactants

2. The sheet-like cosmetic composition according to claim 1, wherein the liquid composition further contains the following component (C). (C) Anionic polymer

3. The first hydrophilic layer and the second hydrophilic layer contain hydrophilic fibers. The hydrophilic fiber includes one or more selected from rayon and cotton. The hydrophobic layer contains hydrophobic fibers, The sheet-like cosmetic composition according to claim 1, wherein the hydrophobic fiber comprises one or more selected from polypropylene, polyethylene, and polyethylene terephthalate.

4. The sheet-like cosmetic composition according to claim 3, wherein the hydrophilic fiber includes rayon, and the hydrophobic fiber includes one or more selected from polypropylene and polyethylene.

5. The sheet-like cosmetic composition according to claim 4, wherein the hydrophilic fiber is rayon, and the hydrophobic fiber is polypropylene and polyethylene.

6. The sheet-like cosmetic composition according to claim 5, wherein the hydrophobic layer is formed by heat-fusing polypropylene fibers and polyethylene fibers.

7. The sheet-like cosmetic composition according to claim 1, wherein the hydrophilic powder that is component (A) is one or more selected from porous silica and talc.

8. The sheet-like cosmetic composition according to claim 1, wherein the silicone-based surfactant that is component (B) is a polyether-modified silicone.

9. The sheet-like cosmetic composition according to claim 8, wherein the polyether-modified silicone is a polyoxyethylene-methylpolysiloxane copolymer.

10. A package containing a sheet-like cosmetic in which a liquid composition is impregnated into a sheet, The aforementioned sheet-like cosmetic composition is A sheet comprising: a first hydrophilic layer which is a hydrophilic woven or nonwoven fabric; a second hydrophilic layer which is a hydrophilic woven or nonwoven fabric; and a hydrophobic layer which is a hydrophobic woven or nonwoven fabric sandwiched between the first hydrophilic layer and the second hydrophilic layer. A liquid composition containing the following components (A), (B), and water A packaging body equipped with the following features. (A) Hydrophilic powder (B) Silicone-based surfactants

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