Sheet-type cosmetic

Abstract

The present invention relates to a sheet-like cosmetic composition that exhibits excellent powder transferability and dirt removal properties when wiped with a pressing motion. [Solution] A sheet-like cosmetic according to one embodiment of the present invention is a sheet-like cosmetic in which a liquid composition is impregnated into a sheet, wherein the surface is provided with an uneven structure consisting of linear recesses and protrusions located between the recesses, and when viewed from a direction perpendicular to the surface, the smallest angle among the angles in which the recesses intersect with the fiber CD (cross direction) direction is 35° or more and less than 60°, and when the entire circumference of the protrusions is not surrounded by the recesses, the length of the recesses per 100 mm along the fiber CD direction is 109 mm or more and 132 mm or less, and the number of recesses included in a rectangular area with a short side of 5 cm and a long side of 10 cm is 4 or more, and when the entire circumference of the protrusions is surrounded by the recesses, the perimeter of the protrusions is 29 mm or more, and the number of protrusions surrounded by the recesses included in the rectangular area is 7 or more.

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 that seeps 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 horizontally, the makeup will be removed. For this reason, a "press-wipe" method is used, where the sheet-type cosmetic is lightly pressed against the skin surface and wiped without moving horizontally. However, in this case, the pressure applied to the skin surface is small, and the amount of powder transferred tends to be insufficient. Furthermore, in recent years, there has been an increase in consumers who use sheet-type cosmetics on their bodies after using them on their faces. Therefore, both the ability to transfer powder from the sheet to the skin surface and the ability to remove sebum, dirt, and sweat components from the skin surface when the sheet-type cosmetic is pressed firmly against the skin surface and moved horizontally, as is the case when using it on the body, are required.

[0005] The present invention relates to a sheet-like cosmetic material that exhibits excellent powder transfer properties when wiping and dirt removal properties when wiping. [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, The surface is provided with an uneven structure consisting of linear recesses and protrusions located between the recesses. When viewed from a direction perpendicular to the surface, the smallest angle at which the recess intersects the fiber CD (cross direction) is 35° or more and less than 60°. If the entire circumference of the protrusion is not surrounded by the recess, the length of the recess per 100 mm along the fiber CD direction is 109 mm or more and 132 mm or less, and the number of recesses included in a rectangular area with a short side of 5 cm and a long side of 10 cm is 4 or more. If the entire circumference of the protrusion is surrounded by the recess, the perimeter of the protrusion is 29 mm or more, and the number of protrusions surrounded by the recess included in the rectangular area is 7 or more.

[0007] In the package according to one embodiment of the present invention, a sheet-like cosmetic in which a liquid composition is impregnated in a sheet is accommodated in a packaging material. The sheet-like cosmetic is provided with an uneven structure on the surface, which consists of linear recesses and convex portions located between the recesses. When viewed from a direction perpendicular to the surface, the smallest angle among the angles at which the recesses intersect with respect to the fiber CD (cross direction) is 35° or more and less than 60°. When the entire circumference of the convex portion is not surrounded by the recesses, the length of the recesses per 100 mm along the fiber CD direction is 109 mm or more and 132 mm or less, and the number of the recesses included in a rectangular region having a short side of 5 cm and a long side of 10 cm is 4 or more. When the entire circumference of the convex portion is surrounded by the recesses, the peripheral length of the convex portion is 29 mm or more, and the number of the convex portions surrounded by the recesses included in the rectangular region is 7 or more.

Advantages of the Invention

[0008] According to the present invention, it is possible to provide a sheet-like cosmetic excellent in the transferability of pressed powder and the stain-removing property.

Brief Description of the Drawings

[0009] [Figure 1] It is a schematic diagram of a sheet having a laminated structure, which is included in the sheet-like cosmetic according to the present embodiment. [Figure 2] It is a schematic diagram showing the state of holding of hydrophilic powder by a sheet in the sheet-like cosmetic according to the present embodiment. [Figure 3] It is a schematic diagram of Pattern 1 formed by the uneven structure on the sheet surface of the sheet-like cosmetic according to the present embodiment. [Figure 4] It is a schematic diagram of the above uneven structure. [Figure 5] It is an enlarged schematic diagram of the above Pattern 1. [Figure 6] It is a schematic diagram of Pattern 2 formed by the uneven structure on the sheet surface of the sheet-like cosmetic according to the present embodiment. [[ID=This is a schematic diagram of a magnified view of pattern 2 shown above. [Figure 8] This is a schematic diagram of the pattern 3 formed by the uneven surface structure of the sheet-like cosmetic material according to this embodiment. [Figure 9] This is a schematic diagram of a magnified view of pattern 3 shown above. [Figure 10] This is a schematic diagram of the pattern 4 formed by the uneven surface structure of the sheet-like cosmetic material according to this embodiment. [Figure 11] This is a schematic diagram showing an enlarged view of pattern 4 above. [Figure 12] This is a schematic diagram of the pattern 5 formed by the uneven surface structure of the sheet-like cosmetic material according to this embodiment. [Figure 13] This is a schematic diagram of a magnified view of pattern 5 shown above. [Figure 14] This is a schematic diagram of the pattern 6 formed by the uneven surface structure of the sheet-like cosmetic material according to this embodiment. [Figure 15] This is a schematic diagram of a magnified view of pattern 6 shown above. [Figure 16] This is a schematic diagram of a sheet-like cosmetic according to this embodiment. [Figure 17] This is a schematic diagram showing the non-liquid components contained in the sheet-like cosmetic composition according to this embodiment and transferred onto the skin. [Figure 18] This is a schematic diagram of a single-layer sheet comprising the sheet-like cosmetic material according to this embodiment. [Figure 19] This is a schematic diagram of a package containing a sheet-like cosmetic product according to this embodiment. [Figure 20] This is a schematic diagram of the pattern 7 formed by the uneven surface structure of the sheet-like cosmetic material according to the comparative example. [Figure 21] This is a schematic diagram of the pattern 8 formed by the uneven surface structure of the sheet-like cosmetic material according to the comparative example. [Figure 22] This is an image of hydrophilic powder transferred from a sheet-like cosmetic according to Example 1 onto black drawing paper. [Figure 23] This is an image of hydrophilic powder transferred from a sheet-like cosmetic according to Comparative Example 1 onto black drawing paper. [Figure 24]This is an image of white artificial leather that has been wiped with the sheet-like cosmetic according to Example 1. [Figure 25] This is an image of white artificial leather that has been wiped with the sheet-type cosmetic according to Comparative Example 2. [Figure 26] This is a schematic diagram showing the direction of fiber flow. [Figure 27] This is an image of a rectangular area with a short side of 5 cm and a long side of 10 cm, as shown in Pattern 1 above. [Figure 28] This is an image of a rectangular area with a short side of 5 cm and a long side of 10 cm, as shown in pattern 2 above. [Figure 29] This is an image of a rectangular area with a short side of 5 cm and a long side of 10 cm, as shown in pattern 3 above. [Figure 30] This is an image of a rectangular area with a short side of 5 cm and a long side of 10 cm, as shown in pattern 4 above. [Figure 31] This is an image of a rectangular area with a short side of 5 cm and a long side of 10 cm, corresponding to pattern 5 shown above. [Figure 32] This is an image of a rectangular area with a short side of 5 cm and a long side of 10 cm, corresponding to pattern 6 shown above. [Modes for carrying out the invention]

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

[0011] [Overall composition of sheet-type cosmetic product] The sheet-like cosmetic composition according to this embodiment is a sheet formulation comprising a sheet and a liquid composition impregnated in the sheet. "Impregnated" is not limited to immersion in the sheet with the liquid composition, but also includes a state in which the liquid composition is soaked into the sheet by spraying or using a nozzle, or a state in which the liquid composition is retained. "Liquid" refers to a substance that is liquid at 25°C, for example, having a viscosity of 20,000 mPa·s or less at 25°C. Hereinafter, "the sheet according to this embodiment" will be simply referred to as "the sheet," and "the liquid composition according to this embodiment" will be simply referred to as "the liquid composition."

[0012] [Sheet structure] Figure 1 is a schematic diagram of the sheet 10 comprising the sheet-like cosmetic material according to this embodiment. As shown in the figure, the sheet 10 comprises a first hydrophilic layer 11, a second hydrophilic layer 12, and a hydrophobic layer 13. Note that the sheet comprising the sheet-like cosmetic material according to this embodiment is not limited to the three-layer structure shown herein, but may be any sheet made of woven or nonwoven fabric.

[0013] The first hydrophilic layer 11 is a woven or nonwoven fabric made of hydrophilic fibers. The hydrophilic fibers forming the first hydrophilic layer 11 may be fibers whose surface is inherently hydrophilic, or they may be fibers whose surface is inherently hydrophobic but have been treated to impart hydrophilicity. Examples of fibers whose surface is inherently hydrophilic include natural cellulose fibers such as rayon, cotton, cupro, lyocell, and wood pulp, as well as regenerated cellulose fibers 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 preferable because its flexibility in a wet state is greatly improved, making it excellent for wiping (wiping horizontally). 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 woven or nonwoven fabric made of hydrophilic fibers. 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 have been treated 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 woven or nonwoven fabric made of hydrophobic fibers. 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 that form 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 of thermoplastic resins such as polyethylene terephthalate (PET) that have fiber-forming ability. 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 11a of the first hydrophilic layer 11 is provided with an uneven structure 30 consisting of recesses 31 and protrusions 32. This uneven structure will be described later. 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 structure.

[0022] [Composition of the liquid composition] The liquid composition of the sheet-like cosmetic according to this embodiment contains component (A), component (B), 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. Porous silica, talc, etc., can be used as the hydrophilic powder, and a mixture of multiple types of powders with different materials may also be used. The shape of the hydrophilic powder is not particularly limited, such as spherical or plate-shaped, and may be a mixture of multiple types of powders with different shapes.

[0025] For component (A), the hydrophilic powder is preferably spherical, containing particles with a diameter of 0.2 μm to 25 μm, more preferably with an average particle diameter of 0.5 μm to 20 μm, even more preferably with an average particle diameter of 1 μm to 15 μm, and even more preferably with an average particle diameter of 3 μm to 12 μm. In the case of plate-shaped powder, it is preferable that the 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.

[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] The hydrophilic powder content of component (A) in the liquid composition 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.

[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 nonionic surfactant. Nonionic surfactants include silicone-based surfactants, ethylene oxide condensation type surfactants, polyglycerin-type surfactants, and sugar ester-type surfactants. Silicone-based surfactants include 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 are preferably polyether-modified silicones.

[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] Examples of ethylene oxide condensation type surfactants include polyoxyethylene hydrogenated castor oil, polyoxyethylene alkyl ethers, polyoxyethylene fatty acid esters, polyoxyethylene polyhydric alcohol fatty acid esters, and polyoxyethylene sorbitan fatty acid esters. Examples of commercially available ethylene oxide condensation surfactants include PEG-80 hydrogenated castor oil "NIKKOL® HCO-80" (manufactured by Nikko Chemicals Co., Ltd.), polyoxyethylene (60) hydrogenated castor oil "Emanon® CH-60" (manufactured by Kao Corporation), polyoxyethylene (40) hydrogenated castor oil "HC-40" (manufactured by Nippon Emulsion Co., Ltd.), polyoxyethylene (100) hydrogenated castor oil "HC-100" (manufactured by Nippon Emulsion Co., Ltd.), PEG-20 glyceryl isostearate "EMALEX® GWIS-120" (manufactured by Nippon Emulsion Co., Ltd.), PEG-50 hydrogenated castor oil isostearate "RWIS-150" (manufactured by Nippon Emulsion Co., Ltd.), PEG-50 glyceryl isostearate "EMALEX® GWIS-150" (manufactured by Nippon Emulsion Co., Ltd.), and PPG-6 decyltetradeceth-20 "NIKKOL® Examples include "SG-DTD620" (manufactured by Nikko Chemicals Co., Ltd.), polyoxyethylene lauryl ether "Emulgen® 108" (manufactured by Kao Corporation), polyglyceryl-4 lauryl ether "PGLAL ML04" (manufactured by Daicel Corporation), polyoxyethylene polyoxypropylene decyltetradecyl ether "Blaunon® DC-620" (manufactured by Aoki Oil & Fat Industry Co., Ltd.), and polyoxyethylene isoalcohol ether "EMALEX® 1820" (manufactured by Nippon Emulsion Co., Ltd.).

[0034] Examples of sugar ester surfactants include sucrose fatty acid esters. Examples of commercially available sugar ester surfactants include sucrose stearate ester "Ryoto Sugar Ester S-570" (manufactured by Mitsubishi Chemical Corporation) and sucrose stearate ester "Ryoto Sugar Ester S-970" (manufactured by Mitsubishi Chemical Corporation).

[0035] Examples of polyglycerin surfactants include polyglyceryl-5 hexastearate, polyglyceryl-5 trimiristate, and polyglyceryl-6 trilaurate. Examples of commercially available polyglycerin surfactants include polyglyceryl-5 hexastearate "Sunsoft® A-186E-C" (manufactured by Taiyo Kagaku Co., Ltd.), polyglyceryl-5 trimiristate "Sunsoft® A-143E-C" (manufactured by Taiyo Kagaku Co., Ltd.), and polyglyceryl-6 trilaurate "Sunsoft® Q-123H-C" (manufactured by Taiyo Kagaku Co., Ltd.).

[0036] 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 averaging 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 HLB value.

[0037] In the liquid composition according to this embodiment, as shown in Figure 2, it is believed that the nonionic 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.

[0038] Therefore, in the sheet-like cosmetic composition according to this embodiment, secondary particles 23 that cannot pass through the gaps between the fibers 24 constituting the sheet 10 can be stably held by the fibers 24. The fibers 24 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.

[0039] 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.

[0040] 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.

[0041] Furthermore, the liquid composition may contain other components as needed. Other components include anionic polymers, cationic compounds, ethanol, texture enhancers, preservatives, pH adjusters, humectants, anti-inflammatory agents, whitening agents, UV absorbers, UV scatterers, disinfectants, antiperspirants, cooling agents, chelating agents, fragrances, colorants, and the like.

[0042] Anionic polymers disperse hydrophilic powders and suppress sedimentation due to aggregation. From the viewpoint of suppressing sedimentation of hydrophilic powders, the content of anionic polymers 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.

[0043] 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.

[0044] 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), alkyl-modified carboxyvinyl polymer, 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.

[0045] 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).

[0046] Other examples include potassium hydroxide as a pH adjuster, such as "Liquid Caustic Potassium (48%)" (manufactured by AGC Inc.), ethanol, such as "Traceable 95 Grade 1" (manufactured by Nippon Alcohol Industry Co., Ltd.), 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.), and phenoxyethanol "Highsolve EPH" (manufactured by Toho Chemical Industry Co., Ltd.) and methyl parahydroxybenzoate "Mekkins® M" (manufactured by Ueno Pharmaceutical Co., Ltd.).

[0047] [About uneven structures] As described above, the surface 11a is provided with a recessed structure 30 consisting of recesses 31 and protrusions 32. The pattern formed on the surface 11a by the recessed structure 30 differs depending on the linearity of the recesses 31. The following describes various patterns formed on the surface 11a by the recessed structure 30.

[0048] (Pattern 1) Figure 3 is a plan view showing the "pattern 1" formed by the uneven structure 30, and shows a part of the surface 11a viewed from a direction perpendicular to the surface 11a (Z direction in the figure). Figure 4 is a schematic diagram of the uneven structure 30, and shows a part of the first hydrophilic layer 11 viewed from a direction parallel to the surface 11a (Y direction in the figure).

[0049] As shown in these figures, the uneven structure 30 consists of linear recesses 31 and protrusions 32 located between the recesses 31. The recesses 31 have a linear shape that extends in a straight or curved manner in a plane (XY plane) parallel to the surface 11a. As shown in Figure 4, the depth of the recesses 31 relative to the protrusions 32 is preferably 0.05 mm to 0.9 mm. The width W of the recesses 31 is preferably 1 mm to 26 mm, and the spacing G of the recesses 31 is preferably 1 mm to 8 mm. If the spacing G varies depending on the linear shape of the recesses 31, the maximum spacing should be used.

[0050] The root mean square height (Sp) of surface 11a varies depending on the configuration of the uneven structure 30, with 40 μm or more being preferable. The root mean square height (Sp) was measured as follows: A sheet was prepared before impregnation with the liquid composition, and the sheet surface was photographed with a one-shot 3D measurement microscope "VR-3100" (manufactured by Keyence Corporation, magnification 12x). The obtained photographed images were used with the analysis application of the one-shot 3D measurement microscope "VR-3100" to calculate the value of the root mean square height (Sp). Three arbitrary locations were selected for photography, and the average value was taken as the root mean square height (Sp) value.

[0051] The recesses 31 can form various patterns when viewed from a direction perpendicular to the surface 11a. Figure 3 shows a pattern in which multiple wavy recesses 31 of the same shape are arranged parallel to each other at predetermined intervals when viewed from a direction perpendicular to the surface 11a. The linearity of the recesses 31 is determined by the intersection angle with respect to the fiber CD (cross direction) direction and the length of the recesses 31. Figure 5 is a schematic diagram of the pattern shown in Figure 3, further enlarged. In this figure, the fiber CD direction H is shown.

[0052] The fiber CD direction H is a direction parallel to the surface 11a and is a direction orthogonal to the flow of the fibers of the woven or non-woven fabric that becomes the first hydrophilic layer 11 during the production of the first hydrophilic layer 11. FIG. 26 is an image of the surface of the sheet of Example 1, and the fiber flow direction is indicated by an arrow. In FIG. 5, the fiber CD direction H coincides with the X direction. The fiber CD direction H is a direction orthogonal to the fiber flow direction and can be specified by magnifying the first hydrophilic layer 11 using a microscope or the like and confirming the fiber flow direction.

[0053] As shown in FIG. 5, in the plane (X-Y plane) parallel to the surface 11a, the angle at which the concave portion 31 intersects the fiber CD direction H is defined as the "intersection angle θ" c ". The intersection angle θ c is the smallest angle among the angles at which the concave portion 31 intersects the fiber CD direction H when the angle at which the concave portion 31 intersects the fiber CD direction H varies according to the linear shape of the concave portion 31. The concave portion 31 is configured such that the intersection angle θ c is 35° or more and less than 60°.

[0054] The concavo-convex structure 30 takes either a configuration in which the entire circumference of the convex portion 32 is surrounded by the concave portion 31 or a configuration in which the entire circumference of the convex portion 32 is not surrounded by the concave portion 31. As shown in FIG. 3, in the case of the configuration in which the entire circumference of the convex portion 32 is not surrounded by the concave portion 31, as shown in FIG. 5, when the length of the concave portion 31 per 100 mm along the fiber CD direction H is defined as the length L, the length L is 109 mm or more and 132 mm or less. Also, as shown in FIG. 27, the number of concave portions 31 included in a rectangular region having a short side of 5 cm and a long side of 10 cm is 4 or more. Although only one concave portion 31 is shown in FIG. 5, the other concave portions 31 are the same with respect to the intersection angle θ c and the length per 100 mm. Also, in FIG. 5, for the sake of convenience, the shape of the concave portion 31 with respect to 100 mm is shown enlarged. In actuality, the concave portion 31 has a size such that it includes a plurality of wavy portions with respect to 100 mm.

[0055] (Pattern 2) Figure 6 is a schematic diagram of "pattern 2" formed by the uneven structure 30, and shows a part of the first hydrophilic layer 11 viewed from a direction perpendicular to the surface 11a (Z direction in the figure). Figure 6 shows a pattern in which multiple wave-shaped recesses 31 of the same shape are arranged in parallel at predetermined intervals, as viewed from a direction perpendicular to the surface 11a, and the linear shape of the waves is different from that of Figure 3. The configuration of the uneven structure 30 other than the linear shape of the recesses 31 (see Figure 4) is the same as that of pattern 1.

[0056] Figure 7 is a schematic diagram that further enlarges the pattern shown in Figure 6. As shown in the figure, the intersection angle θ is also present in this pattern. c The configuration is such that the angle is between 35° and less than 60°. Furthermore, the pattern shown in Figure 6 also has a configuration where the entire circumference of the convex portion 32 is not surrounded by the concave portion 31, and the length L is between 109 mm and 132 mm. In addition, as shown in Figure 28, the number of concave portions 31 included in a rectangular area with a short side of 5 cm and a long side of 10 cm is six or more. Although Figure 7 shows one concave portion 31, the other concave portions 31 also have an intersection angle θ c The same applies to length L.

[0057] (Pattern 3) Figure 8 is a schematic diagram of the pattern 3 formed by the uneven structure 30, and shows a part of the first hydrophilic layer 11 viewed from a direction perpendicular to the surface 11a (the Z direction in the figure). Figure 8 shows a pattern consisting of a plurality of annular recesses 31 arranged concentrically, viewed from a direction perpendicular to the surface 11a. The configuration of the uneven structure 30 other than the linear recesses 31 (see Figure 4) is the same as that of pattern 1.

[0058] Figure 9 is a schematic diagram that further enlarges the pattern shown in Figure 8. As shown in the figure, the intersection angle θ is also present in this pattern. cThe configuration is such that the angle is between 35° and less than 60°. The pattern shown in Figure 8 has a configuration in which the entire circumference of the convex portion 32 is surrounded by the concave portion 31. In this case, where the concave portions 31 overlap, as shown in Figure 9, if the circumference R is the circumference of the outermost convex portion 32, then a circumference R of 29 mm or more is preferable. Furthermore, as shown in Figure 29, the number of convex portions 32 surrounded by concentric concave portions 31 within a rectangular area with a short side of 5 cm and a long side of 10 cm is 7 or more. Figure 9 shows three concave portions 31 arranged in a single concentric circle, but the other concave portions 31 also have an intersection angle θ c The same applies to the circumference R.

[0059] (Pattern 4) Figure 10 is a schematic diagram of "pattern 4" formed by the uneven structure 30, and is a view of a part of the first hydrophilic layer 11 from a direction perpendicular to the surface 11a (Z direction in the figure). Figure 10 shows a pattern in which, when viewed from a direction perpendicular to the surface 11a, the protrusions 32 surrounded by recesses 31 are arranged along a predetermined straight line M, and the straight lines M are arranged parallel to each other at predetermined intervals. The configuration of the uneven structure 30 other than the linearity of the recesses 31 (see Figure 4) is the same as that of pattern 1.

[0060] Figure 11 is a schematic diagram that further enlarges the pattern shown in Figure 10. As shown in the figure, the intersection angle θ is also present in this pattern. c The configuration is such that the angle is between 35° and less than 60°. Furthermore, the pattern shown in Figure 10 also has a configuration in which the entire circumference of the convex portion 32 is surrounded by the concave portion 31. Thus, when the concave portions 31 do not overlap, as shown in Figure 11, the minimum perimeter R of the convex portion 32 is preferably 29 mm or more. Furthermore, as shown in Figure 30, the number of convex portions 32 surrounded by concave portions 31 within a rectangular area with a short side of 5 cm and a long side of 10 cm is 12 or more. Although Figure 11 shows two concave portions 31, the other concave portions 31 also have an intersection angle θ c The same applies to the circumference R.

[0061] (Pattern 5) Figure 12 is a schematic diagram of "pattern 5" formed by the uneven structure 30, and is a view of a part of the first hydrophilic layer 11 from a direction perpendicular to the surface 11a (Z direction in the figure). Figure 12 shows a pattern in which hexagonal protrusions 32 surrounded by recesses 31 are arranged in a honeycomb pattern, as viewed from a direction perpendicular to the surface 11a. The configuration of the uneven structure 30 other than the linear recesses 31 (see Figure 4) is the same as that of pattern 1.

[0062] Figure 13 is a schematic diagram that further enlarges the pattern shown in Figure 12. As shown in the figure, the intersection angle θ is also present in this pattern. c The configuration is such that the angle is between 35° and less than 60°. Furthermore, the pattern shown in Figure 12 also has a configuration in which the entire circumference of the convex portion 32 is surrounded by the concave portion 31, and as shown in Figure 13, the circumference R of the convex portion 32 is preferably 29 mm or more. Moreover, as shown in Figure 31, the number of convex portions 32 surrounded by the concave portion 31 within a rectangular area with a short side of 5 cm and a long side of 10 cm is 55 or more. Figure 13 shows only a portion of the concave portion 31, but the other concave portions 31 also have an intersection angle θ c The same applies to the circumference R.

[0063] (Pattern 6) Figure 14 is a schematic diagram of the "pattern 6" formed by the uneven structure 30, and shows a part of the first hydrophilic layer 11 viewed from a direction perpendicular to the surface 11a (Z direction in the figure). Figure 24 shows a pattern in which the recesses 31 extend in a grid pattern, viewed from a direction perpendicular to the surface 11a. The configuration of the uneven structure 30 other than the linear recesses 31 (see Figure 4) is the same as that of pattern 1.

[0064] Figure 15 is a schematic diagram that further enlarges the pattern shown in Figure 14. As shown in the figure, the intersection angle θ is also present in this pattern. c The configuration is such that the angle is between 35° and less than 60°. Furthermore, the pattern shown in Figure 14 also has a configuration in which the entire circumference of the convex portion 32 is surrounded by the concave portion 31, and as shown in Figure 15, a perimeter R of 29 mm or more is preferable. Moreover, as shown in Figure 32, the number of convex portions 32 surrounded by concave portions 31 within a rectangular area with a short side of 5 cm and a long side of 10 cm is 23 or more. Figure 15 shows only a portion of the concave portion 31, but the other concave portions 31 also have an intersection angle θc The same applies to the circumference R.

[0065] The uneven structure 30 has the configuration described above. The patterns formed on the surface 11a by the uneven structure 30 are not limited to the patterns 1 to 6 described above. When viewed from a direction perpendicular to the surface 11a, the smallest angle at which the recesses 31 intersect with the fiber CD direction H is 35° or more and less than 60°. Furthermore, if the entire circumference of the protrusion 32 is not surrounded by the recesses 31, the length of the recesses 31 per 100 mm along the fiber CD direction H is 109 mm or more and 132 mm or less. If the entire circumference of the protrusion 32 is surrounded by the recesses 31, the circumference of the protrusion 32 is 29 mm or more.

[0066] The method for forming the uneven structure 30 is not particularly limited, but it is possible to form the uneven structure 30 on the surface 11a using a cylinder type.

[0067] [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 16 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.

[0068] When this sheet-type cosmetic is pressed and wiped onto the skin, 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 17 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 nonionic surfactant 22 of component (B).

[0069] In this case, the uneven structure 30 provided on the surface 11a improves the transferability of the hydrophilic powder 21 to the skin 50 and the dirt removal ability of the skin 50 (see Examples). Specifically, by setting the intersection angle θc to 35° or more and 60° or less, the sheet-like cosmetic 1 can be moved vertically or horizontally to come into contact with and scrape off dirt. Furthermore, if the entire circumference of the convex portion 32 is not surrounded by the concave portion 31, setting the above length L to 109 mm or more and 132 mm or less makes it easier for the concave portion 31 to come into contact with dirt when wiping. Furthermore, if the entire circumference of the convex portion 32 is surrounded by the concave portion 31, setting the above circumference length R to 29 mm or more makes it easier for the concave portion 31 to come into contact with dirt. As shown in Figure 9, when the concave portions 31 overlap, the outermost convex portion 32 comes into contact with dirt first, so the length of the longest part of the circumference of the convex portion 32 is specified. Furthermore, by making the sheet 10 a three-layer structure as described above, the liquid composition is unevenly distributed in the first hydrophilic layer 11 and the second hydrophilic layer 12, so in this respect as well, a large amount of hydrophilic powder 21 is transferred to the skin 50.

[0070] Thus, 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 17, the hydrophilic powder 21 of component (A) is coated with the nonionic surfactant 22 of component (B). The hydrophilic powder 21 coated with the nonionic 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.

[0071] As described above, the sheet-like cosmetic material according to this embodiment has an uneven structure 30 on its surface 11a, which makes it possible to provide excellent powder transferability and dirt removal when wiping with a pressing motion.

[0072] [Regarding single-layer sheets] As described above, the sheet 10 has a three-layer structure in which a first hydrophilic layer 11, a hydrophobic layer 13, and a second hydrophilic layer 12 are laminated, and an uneven structure 30 is provided on the surface 11a, which is the surface of the first hydrophilic layer 11. However, the sheet according to this embodiment may have a single-layer structure.

[0073] Figure 18 is a schematic diagram of a single-layer sheet 40 according to this embodiment. As shown in the figure, the sheet 10 has a single-layer structure and is composed of a mixture of hydrophilic fibers and hydrophobic fibers. The hydrophilic fibers can be those listed above as materials for the first hydrophilic layer 11 and the second hydrophilic layer 12, and the hydrophobic fibers can be those listed above as materials for the hydrophobic layer 13.

[0074] The surface 40a of the sheet 40 is provided with an uneven surface structure 30. The configuration of the uneven surface structure 30 can be the same as that of the sheet 10, that is, when viewed from a direction perpendicular to the surface 40a, the smallest angle at which the recesses 31 intersect with the fiber CD direction is 35° or more and less than 60°, and when the entire circumference of the protrusions 32 is not surrounded by the recesses 31, the length of the recesses 31 per 100 mm along the fiber CD direction is 109 mm or more and 132 mm or less, and when the entire circumference of the protrusions 32 is surrounded by the recesses 31, the perimeter of the protrusions 32 is 29 mm or more.

[0075] The sheet 40 is also impregnated with the liquid composition described above, forming the sheet-like cosmetic 1. The sheet 40 may be any single-layer sheet with an uneven structure 30, or it may have other components such as a woven or nonwoven fabric made only of hydrophilic fibers.

[0076] [Packaging] A package containing the sheet-like cosmetic material according to this embodiment will now be described. Figure 19 is a schematic diagram of this package 100. As shown in the figure, the package 100 has a plurality of sheet-like cosmetic materials 1 and a packaging material 2. In the package 100, the sheet-like cosmetic materials 1 according to this embodiment are housed in the packaging material 2 in a laminated state where they are directly stacked on top of each other.

[0077] The packaging material 2 has an opening 2a at a position opposite to the stacking direction of the sheet-like cosmetic. A sealing body S is attached to the packaging material 2 to cover the opening 2a. In the package 100, the sheet-like cosmetic 1 can be removed one by one by peeling at least a portion of the sealing body S from the packaging material 2 to open the opening 2a. [Examples]

[0078] Sheet-like cosmetic compositions according to the examples and comparative examples of the present invention were prepared, and the transferability of hydrophilic powders was evaluated.

[0079] (Sheet) Three types of sheets were prepared according to the examples and comparative examples. These two types of sheets will be referred to as "Sheet 1," "Sheet 2," and "Sheet 3." Sheet 1 has a structure in which a hydrophobic layer is sandwiched between a first hydrophilic layer and a second hydrophilic layer and fixed by a spunlace method, as described in the above embodiment. The first hydrophilic layer and the second hydrophilic layer are layers made of rayon fibers (basis weight 20 g / m²). 2 The hydrophobic layer is made of polypropylene (PP) fibers and polyethylene (PE) fibers heat-fused together (basis weight 20 g / m²). 2 It consists of ). The thickness of sheet 1 is 0.51 mm.

[0080] "Sheet 2" is a single-layer sheet made of a blend of rayon fibers, PP fibers, and PE fibers (basis weight 50g / m²). 2 The thickness is 0.36 mm. Sheet 3 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. In other words, sheet 3 has a structure in which three hydrophilic layers are laminated.

[0081] A textured surface was formed on the surfaces of sheets 1 to 3 (except for Comparative Example 1) to produce sheets according to the Examples and Comparative Examples. Furthermore, the prepared sheets were impregnated with a textured composition to produce sheet-like cosmetics. Tables 2 and 3 below show the composition and evaluation results of the sheet-like cosmetics according to the Examples and Comparative Examples.

[0082] [Table 2]

[0083] [Table 3]

[0084] The "patterns" in Tables 2 and 3 are as follows: "Pattern 1"... "Pattern 1 (see Figure 3)" in the above embodiment (intersection angle θ) c (Angle: 35°, Length L: 131 mm, Root Mean Square Height (Sp): 77.58 μm) "Pattern 2"... "Pattern 2 (see Figure 6)" in the above embodiment (intersection angle θ) c (35°, length L: 117 mm, root mean square height (Sp): 89.785 μm) "Pattern 3"... "Pattern 3 (see Figure 8)" in the above embodiment (intersection angle θ) c (Angle: 45°, Perimeter R: 73.2 mm, Root Mean Square Height (Sp): 105.35 μm) "Pattern 4"... "Pattern 4 (see Figure 10)" in the above embodiment (intersection angle θ) c (Angle: 50°, Perimeter R: 35.7 mm, Root Mean Square Height (Sp): 95.61 μm) "Pattern 5"... "Pattern 5 (see Figure 12)" in the above embodiment (intersection angle θ) c (Angle: 60°, Perimeter R: 30.1 mm, Root Mean Square Height (Sp): 86.44 μm) "Pattern 6"... "Pattern 6 (see Figure 14)" in the above embodiment (intersection angle θ) c (Angle: 45°, Perimeter R: 41.5 mm, Root Mean Square Height (Sp): 97.07 μm) "Pattern 7"... A pattern consisting of linear recesses 71 and protrusions 72, as shown in Figure 20 (intersection angle θ c (Depth: 0°, Length L: 96 mm, Root Mean Square Height (Sp): 68.22 μm) "Pattern 8"... As shown in Figure 21, this pattern consists of recesses 71 and dot-shaped protrusions 72 (perimeter R: 8.5 mm, root mean square height (Sp): 249.02 μm). "None"... A flat surface without any uneven or textured structure. Note that the above crossing angle θ c The length L, perimeter R, and root mean square height (Sp) are all average values ​​from three locations within the sheet.

[0085] (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 "JA-68R" (manufactured by Asada Flour Milling Co., Ltd.), which is talc. The composition of each component is shown in Tables 2 and 3, and the same applies to the following components.

[0086] Furthermore, the above liquid composition contains either polyoxyethylene-methylpolysiloxane copolymer "Silicone KF-6017P" (manufactured by Shin-Etsu Chemical Co., Ltd., HLB=4.5), which is a polyether-modified silicone, or polyoxyethylene hydrogenated castor oil "Emanon® CH-60" (manufactured by Kao Corporation), which is an ethylene oxide condensation type surfactant, as a nonionic surfactant (component (B)).

[0087] Furthermore, the above liquid composition contains, as other components, water, acrylic acid / alkyl methacrylate copolymer "Pemlen TR-1" (manufactured by Lubrizol Advanced Materials), 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.), and methyl parahydroxybenzoate "Mekkins® M" (manufactured by Ueno Pharmaceutical Co., Ltd.).

[0088] (Powder transferability) 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 500 for 5 seconds over a 3cm x 3cm area to transfer the hydrophilic powder. Figure 22 is an image of the hydrophilic powder transferred from the sheet-like cosmetic composition of Example 1 to the black drawing paper. Figure 23 is an image of the powder transferred from the sheet-like cosmetic composition of Comparative Example 1 to the black drawing paper. The images in Figures 22 and 23 were taken with an electron microscope ("VHX-7000" manufactured by Keyence Corporation, magnification 20x).

[0089] 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 15% or more, "4" for 12.5% ​​or more but less than 15%, "3" for 10% or more but less than 12.5%, "2" for 5% or more but less than 10%, and "1" for less than 5%, with "3" or higher being considered a pass. The evaluation results are shown in Tables 2 and 3 as "Powder transferability when pressed and wiped". Image binarization was performed using "ImageJ" software. Note that for binarization, you can also use other image processing software that is capable of binarization.

[0090] (Stain removal ability) Furthermore, for the sheet-like cosmetic compositions related to the examples and comparative examples, a dirt model (a mixture of a predetermined artificial sebum (squalene, myristyl myristate, linoleic acid, palmitic acid, and oleic acid in a ratio of 3:1.5:2:2.5:1) with 0.7% carbon black added) was applied in 0.015 to 0.018 g portions to a 3 cm x 2 cm area on white artificial leather ("Laforet S2923," manufactured by Okamoto Shinwa). A 100 g load was applied to the sheet-like cosmetic composition, which was folded in half, and it was wiped once. The wiped area (3 cm x 2 cm) was divided into four sections, and each section was photographed using an electron microscope ("VHX-7000," manufactured by Keyence Corporation, at 20x magnification).

[0091] Figure 24 is an image of white artificial leather wiped with the sheet-type cosmetic according to Example 1. Figure 25 is an image of white artificial leather wiped with the sheet-type cosmetic according to Comparative Example 2. The images in Figures 24 and 25 were taken with an electron microscope ("VHX-7000" manufactured by Keyence Corporation, magnification 20x).

[0092] Furthermore, for each captured image, the binarization threshold was adjusted so that the whiteness ratio (percentage of white area) before cleaning was 60%, and the whiteness ratio of the image after cleaning was determined under the same binarization conditions. Using this whiteness ratio, the dirt removal rate was calculated using the following formula. Stain removal rate = (Whiteness ratio of white artificial leather after wiping - Whiteness ratio of white artificial leather after applying stain model) / (Whiteness ratio of white artificial leather - Whiteness ratio of white artificial leather after applying stain model) The cleaning area (3cm x 2cm) was divided into four sections, and the dirt removal rate obtained from each image was averaged. The average value was then evaluated as follows: "5" for values ​​between 0.99 and 1 / 20, "4" for values ​​between 0.95 and 1 / 20, "2" for values ​​between 0.80 and 1 / 20, and "1" for values ​​below 0.80. A score of "3" or higher was considered a pass. These evaluation results are shown as "dirt removal performance" in Tables 2 and 3.

[0093] (Regarding the evaluation results) As shown in Tables 2 and 3, the sheet-type cosmetic compositions of Examples 1 to 7 had a "powder transferability when wiping" and "dirt removal ability" of "3" or higher. On the other hand, the sheet-type cosmetic compositions of Comparative Examples 1 to 3 had either a "powder transferability when wiping" or "dirt removal ability" of less than "3". Therefore, it can be said that the sheet-type cosmetic composition according to the present invention, having the uneven structure described in the above embodiments, is excellent in both powder transferability when wiping and dirt removal ability. [Explanation of symbols]

[0094] 1…Sheet-type cosmetic 10, 40... sheets 11...First hydrophilic layer 12...Second hydrophilic layer 13…Hydrophobic layer 21…Hydrophilic powder 22... Nonionic surfactants

Claims

1. A sheet-type cosmetic in which a liquid composition is impregnated into a sheet, The surface of the sheet is provided with an uneven structure consisting of linear recesses and protrusions located between the recesses. When viewed from a direction perpendicular to the surface, the smallest angle at which the recess intersects the fiber CD (cross direction) direction is 35° or more and less than 60°. If the entire circumference of the protrusion is not surrounded by the recess, the length of the recess per 100 mm along the fiber CD direction is 109 mm or more and 132 mm or less, and the number of recesses included in a rectangular area with a short side of 5 cm and a long side of 10 cm is 4 or more. If the entire circumference of the protrusion is surrounded by the recess, the perimeter of the protrusion is 29 mm or more, and the number of protrusions surrounded by the recess included in the rectangular area is 7 or more. Sheet-type cosmetic.

2. The sheet comprises a first hydrophilic layer which is a woven or nonwoven fabric made of hydrophilic fibers, a second hydrophilic layer which is a woven or nonwoven fabric made of hydrophilic fibers, and a hydrophobic layer which is a woven or nonwoven fabric made of hydrophobic fibers and is sandwiched between the first hydrophilic layer and the second hydrophilic layer. The aforementioned uneven structure is provided on the surface of the first hydrophilic layer. The sheet-like cosmetic composition according to claim 1.

3. The hydrophilic fibers forming the first hydrophilic layer and the second hydrophilic layer include one or more selected from rayon and cotton, and the hydrophobic fibers forming the hydrophobic layer include one or more selected from polypropylene, polyethylene and polyethylene terephthalate. The sheet-like cosmetic composition according to claim 2.

4. The liquid composition contains the following components (A), (B), and water. The sheet-like cosmetic composition according to claim 1. (A) Hydrophilic powder (B) Nonionic surfactants

5. The sheet-like cosmetic composition according to claim 4, wherein the hydrophilic powder that is component (A) is one or more selected from porous silica and talc.

6. A package containing a sheet-like cosmetic in which a liquid composition is impregnated into a sheet, The aforementioned sheet-like cosmetic composition is The surface is provided with an uneven structure consisting of linear recesses and protrusions located between the recesses. When viewed from a direction perpendicular to the surface, the smallest angle at which the recess intersects the fiber CD (cross direction) direction is 35° or more and less than 60°. If the entire circumference of the protrusion is not surrounded by the recess, the length of the recess per 100 mm along the fiber CD direction is 109 mm or more and 132 mm or less, and the number of recesses included in a rectangular area with a short side of 5 cm and a long side of 10 cm is 4 or more. If the entire circumference of the protrusion is surrounded by the recess, the perimeter of the protrusion is 29 mm or more, and the number of protrusions surrounded by the recess included in the rectangular area is 7 or more. packaging.

Images