Sheet-type cosmetic

Abstract

To provide a cosmetic sheet that exhibits exceptional effectiveness in neutralizing body odors, guarantees no residual fuzziness after wiping, improves the slipperiness on the skin during wiping, and eliminates any feeling of skin tightness after wiping.SOLUTION: A cosmetic sheet comprises (A) nonwoven fabric, and a (B) liquid composition with which the nonwoven fabric has been impregnated. The (A) nonwoven fabric comprises (i) multilobal flat cross-section polyester fiber. The (B) liquid composition comprises (ii) spherical particles composed of macromolecular substance.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to sheet-shaped cosmetics.

Background Art

[0002] Conventionally, sheet-shaped cosmetics have been widely used for the purpose of removing sweat, sebum, makeup dirt, etc. and wiping the body clean.

[0003] For example, for the purpose of obtaining a sheet-shaped cosmetic excellent in feel and stability during use, a sheet-shaped cosmetic containing polyether-modified silicone, ethanol, and water in a sheet-shaped substrate has been proposed (see, for example, Patent Document 1). Also, for the purpose of imparting a comfortable skin feel, a sheet-shaped cosmetic in which a sheet-shaped substrate is impregnated with an aqueous dispersion containing a crosslinked (meth)acrylate resin powder or an oil agent has been proposed (see, for example, Patent Document 2). However, in conventional sheet-shaped cosmetics including these proposals, only the wiping property and the skin feel (low irritation, etc.) have been studied, and the deodorizing effect of body odor, the absence of fuzz after wiping, the skin slipperiness during wiping, and the absence of squeaking of the skin after wiping have not been studied.

[0004] Therefore, a sheet-shaped cosmetic excellent in the deodorizing effect of body odor, the absence of fuzz after wiping, the skin slipperiness during wiping, and the absence of squeaking of the skin after wiping has not yet been provided satisfactorily, and there is a strong demand for its prompt provision at present.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] The present invention aims to solve the aforementioned problems of the conventional approach and achieve the following objectives. Specifically, the present invention aims to provide a sheet-type cosmetic that is excellent in its body odor deodorizing effect, lack of lint after wiping, smoothness of the skin during wiping, and lack of skin stiffness after wiping. [Means for solving the problem]

[0007] As a result of diligent research to achieve the above objective, the inventors have found that the sheet-like cosmetic of the present invention comprises (A) a nonwoven fabric and (B) a liquid composition impregnated into the nonwoven fabric, wherein (A) the nonwoven fabric has (i) multi-lobed flat cross-section polyester fibers, and (B) the liquid composition contains (ii) spherical powder made of a polymer substance, thereby obtaining a sheet-like cosmetic that is excellent in deodorizing effect on body odor, lack of lint after wiping, skin slipperiness during wiping, and lack of skin stiffness after wiping.

[0008] The present invention is based on the aforementioned findings by the inventors, and the means for solving the aforementioned problems are as follows: <1> (A) a nonwoven fabric and (B) a liquid composition impregnated into the nonwoven fabric, a sheet-like cosmetic comprising The (A) nonwoven fabric has (i) multi-lobed flat cross-section polyester fibers, The (B) liquid composition is a sheet-like cosmetic characterized by containing (ii) spherical powder made of a polymeric substance. <2> The mass ratio of the content of the multi-lobed flat cross-section polyester fibers [(i) / (ii)] to the content of the spherical powder made of the polymer substance [ii] is 25 or more and 45 or less. <1> This is a sheet-type cosmetic product as described above. <3> The content of multi-lobed flat cross-section polyester fibers is 30% by mass or more and 70% by mass or less relative to the total amount of the nonwoven fabric (A), <1> From the above <2> It is a sheet-type cosmetic product as described in any of the above. [Effects of the Invention]

[0009] According to the present invention, the aforementioned problems of the conventional method can be solved, the aforementioned objectives can be achieved, and a sheet-type cosmetic composition can be provided that is excellent in deodorizing effect on body odor, no lint after wiping, smoothness of the skin during wiping, and no squeaky feeling on the skin after wiping. [Brief explanation of the drawing]

[0010] [Figure 1] Figure 1 is an explanatory diagram illustrating a multi-lobed flattened section. [Modes for carrying out the invention]

[0011] (Sheet-type cosmetic) The sheet-like cosmetic composition of the present invention comprises (A) a nonwoven fabric and (B) a liquid composition impregnated into the nonwoven fabric, and may optionally contain other components or materials. The (A) nonwoven fabric has (i) multi-lobed flat cross-section polyester fibers and may contain other members or components as needed. The (B) liquid composition has (ii) spherical powder made of polymeric material and may contain other members or components as needed. In this specification, "nonwoven fabric having multi-lobed flat cross-section polyester fibers" may be simply referred to as "(A) nonwoven fabric," and "liquid composition containing spherical powder made of polymeric material" may be simply referred to as "(B) liquid composition."

[0012] <(A) Nonwoven fabric> The aforementioned (A) nonwoven fabric is included primarily to improve the deodorizing effect on body odor.

[0013] <<(i) Multi-lobed flattened polyester fiber>> In this invention, "multi-lobed flattened cross-section" refers to a flattened shape having several convex portions in the cross-sectional shape (transverse shape) perpendicular to the fiber axis. In this invention, "multi-lobed flattened cross-section polyester fiber" refers to a polyester fiber having the multi-lobed flattened cross-section described above. The above-mentioned (i) multi-lobed flat cross-section polyester fiber is not particularly limited and can be appropriately selected according to the purpose. However, it is preferable that the multi-lobed flat cross-section shape in the single fiber cross-section simultaneously satisfies the flatness of the following formula (1) and the irregularity of the following formula (2) (see Figure 1). ·Flatness (A / B) = 2.0 - 3.0 ··· Formula (1) ·Irregularity (C / D) = 1.0 - 5.0 ··· Formula (2) Here, the "A" represents the length of the longest line segment of the cross-section of the multi-lobed flat shape. The "B" represents the length of the line segment of the maximum width connecting the vertices of the convex portions intersecting perpendicularly to the line segment of length A. The "C" represents the largest concavity formed by the multi-lobed flat shape above, and represents the length of the line segment connecting the vertices of adjacent convex portions. Further, the "D" represents the vertical length dropped from the line connecting between the convex portions above to the bottom point of the concave portion.

[0014] As the flatness (A / B), 2.0 - 3.0 is preferable, 2.0 - 2.7 is more preferable, and 2.0 - 2.5 is even more preferable. The irregularity (C / D) represents the size of the concave portion between the convex portions in the multi-lobed flat cross-section. When the value of the irregularity (C / D) is large, the concave portion is small, and when the value of the irregularity (C / D) is small, the concave portion is large. As the irregularity (C / D), 1.0 - 5.0 is preferable, and 2.0 - 4.0 is more preferable.

[0015] The polyester constituting the above-mentioned (i) multi-lobed flat cross-section polyester fiber is not particularly limited and can be appropriately selected according to the purpose. For example, a polymer polymer produced by a condensation reaction of terephthalic acid and ethylene glycol or butylene glycol, condensates of sebacic acid, adipic acid, trimellitic acid, isophthalic acid, paraoxybenzoic acid, etc. with ethylene glycol or butylene glycol, and polyester polymers containing other polyesters, etc. can be mentioned. These may be used alone or in combination of two or more.

[0016] In the case of the (i) multi-lobed flat cross-section polyester fiber, the number of convex portions on the circumference of the cross-sectional shape is not particularly limited and can be appropriately selected according to the purpose. However, from the viewpoints of sebum wiping property and body odor deodorizing effect, it is preferably 5 or more, and more preferably 8 or more.

[0017] For the (i) multi-lobed flat cross-section polyester fiber, those synthesized as appropriate may be used, or commercially available products may be used. The manufacturing method of the (i) multi-lobed flat cross-section polyester fiber is not particularly limited and can be appropriately selected according to the purpose. Examples of commercially available products of the (i) multi-lobed flat cross-section polyester fiber include flat multi-lobed cross-section polyester raw cotton (trade name: Pentas (registered trademark) α, manufactured by Toray Industries, Inc.).

[0018] The (A) non-woven fabric may contain hydrophilic fibers or hydrophobic fibers other than the multi-lobed flat cross-section polyester fiber in addition to the multi-lobed flat cross-section polyester fiber. The hydrophilic fiber is not particularly limited and can be appropriately selected according to the purpose. Examples include cotton, pulp, hemp, rayon, etc. These may be used alone or in combination of two or more. Among these, rayon is preferable from the viewpoints of improving water absorption and skin slipperiness. The hydrophobic fibers other than the (i) multi-lobed flat cross-section polyester fiber are not particularly limited and can be appropriately selected according to the purpose. Examples include polyolefin fibers such as polyethylene (PE) and polypropylene (PP); polyester fibers such as polyethylene terephthalate; polyamide fibers such as nylon; polyacrylonitrile-based fibers; polyvinyl alcohol-based fibers; or mixtures of these fibers, etc. These may be used alone or in combination of two or more.

[0019] There are no particular restrictions on the content of (i) multi-lobed flat cross-section polyester fibers in the (A) nonwoven fabric, and it can be appropriately selected depending on the purpose. However, from the viewpoint of improving the deodorizing effect on body odor, it is preferable that the content be 10% by mass or more and 100% by mass or less, more preferably 30% by mass or more and 70% by mass or less, and particularly preferably 40% by mass or more and 60% by mass or less, relative to the total amount of the (A) nonwoven fabric. It is preferable that the content of (i) multi-lobed flat cross-section polyester fibers in the (A) nonwoven fabric is 10% by mass or more relative to the total amount of the (A) nonwoven fabric, as this can provide an excellent deodorizing effect against body odor. It is preferable that the content of (i) multi-lobed flat cross-section polyester fibers in the (A) nonwoven fabric is 100% by mass or less of the total amount of the (A) nonwoven fabric, as this improves the skin glide when wiping.

[0020] There are no particular restrictions on the average thickness of the nonwoven fabric (A) mentioned above, and it can be appropriately selected depending on the purpose, but it is preferably 0.01 mm or more and 5 mm or less, and more preferably 0.05 mm or more and 1 mm or less. There are no particular restrictions on the method for measuring the average thickness of the nonwoven fabric (A) mentioned above, and it can be appropriately selected depending on the purpose. For example, it can be measured using a small film thickness gauge (FS-60DS (special type), manufactured by Daiei Kagaku Seiki Seisakusho Co., Ltd.) under conditions of 0.3 kPa.

[0021] There are no particular limitations on the form of the nonwoven fabric (A) described above, and it can be appropriately selected according to the purpose. However, it is preferable to have a single-layer sheet made of a blend of multi-lobed flat cross-section polyester fibers and hydrophilic fibers, or a laminated sheet in which a core-sheath type composite fiber, preferably PE / PP core-sheath type fiber, is sandwiched between fibers made of a blend of multi-lobed flat cross-section polyester fibers and hydrophilic fibers in the middle layer, and it is more preferable to have a single-layer sheet made of a blend of multi-lobed flat cross-section polyester fibers and hydrophilic fibers.

[0022] There are no particular restrictions on the weighing weight (per layer) of the nonwoven fabric (A) mentioned above, and it can be appropriately selected according to the purpose, but 10 g / m 2 ~100g / m 2Preferably, 20 g / m 2 ~80g / m 2 This is preferable.

[0023] The nonwoven fabric (A) in the present invention may be one that has been manufactured as appropriate, or a commercially available product may be used. There are no particular restrictions on the method for manufacturing the nonwoven fabric (A), and it can be appropriately selected according to the purpose. For example, it can be obtained by making a web using multi-lobed flat cross-section polyester fibers and rayon, and then entangling the fibers with a water jet.

[0024] Examples of commercially available nonwoven fabrics (A) include Pentas-containing nonwoven fabric (multi-lobed flat cross-section polyester fiber (Pentas) / rayon with a cross-sectional shape having eight protrusions on the circumference) (manufactured by Toray Industries, Inc.) and Pentas-containing nonwoven fabric (multi-lobed flat cross-section polyester fiber (Pentas) / fine rayon with a cross-sectional shape having eight protrusions on the circumference) (manufactured by Daiwa Spinning Co., Ltd.).

[0025] <(B) Liquid composition> The aforementioned liquid composition (B) is included primarily to enhance the deodorizing effect on body odor and to improve the lack of skin dryness after wiping.

[0026] <<(ii) Spherical powders made of polymeric material>>

[0027] In this specification, "spherical" means that the sphericity of the powder is 0.8 or higher. That is, in this specification, "spherical powder" means powder that has a sphericity of 0.8 or higher. "Sphericity" refers to the ratio of the length of the major axis to the length of the minor axis of a single particle. A value closer to 1 indicates a shape that is close to a perfect sphere, while a smaller value indicates a shape that is farther from a perfect sphere. Sphericity can be measured, for example, by the following [Method for Measuring Sphericity]. [Method for measuring sphericity] Using a scanning electron microscope (product name: SU3500, manufactured by Hitachi, Ltd.), the minor and major axes of the particles are measured, and the ratio of the minor axis to the major axis (minor axis / major axis) is defined as the sphericity. Specifically, electron microscope images are taken of the powder sample, and the length of the major axis (major axis) and the length of the minor axis perpendicular to the midpoint of the major axis (minor axis) are measured for 100 particles, and the ratio is calculated. The average of the obtained ratios is defined as the sphericity of the powder sample.

[0028] The spherical powder made of the polymer substance (ii) is not particularly limited as long as it has the properties described above, and can be appropriately selected depending on the purpose. Examples include synthetic polymer substances and natural polymer substances. The aforementioned synthetic polymer material is not particularly limited and can be appropriately selected depending on the purpose. Examples include cross-linked silicone resin, acrylic resin, polyethylene resin, and cross-linked polystyrene resin. The aforementioned natural polymer substance is not particularly limited and can be appropriately selected depending on the purpose; for example, cellulose nanoparticles can be used.

[0029] —Cross-linked silicone resin— Examples of crosslinked silicone resins as spherical powders made of the polymeric substance (ii) above include (vinyl dimethicone / methicone silsesquioxane) crosspolymer, polymethylsilsesquioxane, and silicone rubber powder (silicone rubber powder having a crosslinked structure of dimethylpolysiloxane).

[0030] The cross-linked silicone resin may be one that has been synthesized as appropriate, or a commercially available product may be used. Examples of commercially available cross-linked silicone resins include the following: • Silicone resin (product name: KMP-590, manufactured by Shin-Etsu Chemical Co., Ltd., sphericity: 0.95) • (Vinyl dimethicone / methicone silsesquioxane) crosspolymer (product name: KSP-105, manufactured by Shin-Etsu Chemical Co., Ltd., sphericity: 0.98) • Silicone rubber powder (silicone rubber powder with a cross-linked dimethylpolysiloxane structure, product name: KMP-597, manufactured by Shin-Etsu Chemical Co., Ltd., sphericity: 0.88)

[0031] —Acrylic resin— Examples of acrylic resins as spherical powders made of the polymeric substance (ii) above include crosslinked (meth)acrylic acid resins. Specific examples include methyl methacrylate crosspolymers and (meth)acrylic acid ester copolymer crosspolymers such as (lauryl methacrylate / sodium methacrylate) crosspolymers.

[0032] The aforementioned acrylic resin may be one that has been synthesized as appropriate, or a commercially available product may be used. Examples of commercially available acrylic resins include the following: • Polymethyl methacrylate resin (product name: Matsumoto Microsphere M-305, manufactured by Matsumoto Oil & Fat Pharmaceutical Co., Ltd., sphericity: 0.92) • (Lauryl methacrylate / sodium methacrylate) crosspolymer (Lauryl methacrylate / ethylene glycol dimethacrylate / sodium methacrylate copolymer, product name: Sofcare ST, manufactured by Kao Corporation, effective content: 40% by mass, particle size: 3 μm)

[0033] —Polyethylene resin— Examples of polyethylene resins as spherical powders made of the polymeric substance (ii) above include low-density polyethylene resins. Hereinafter, "low density" as used herein refers to polyethylene with a density of 0.910 or more and less than 0.930, as defined in the former JIS K6748:1995. The polyethylene resin may be one that has been synthesized as appropriate, or a commercially available product may be used. Examples of commercially available polyethylene resins include the following: • Low-density polyethylene (product name: Flowbeads LE-1080, manufactured by Sumitomo Seika Co., Ltd., sphericity: 0.87)

[0034] —Cross-linked polystyrene resin— The cross-linked polystyrene resin used as the spherical powder made of the polymer substance (ii) above may be synthesized as appropriate or a commercially available product may be used. Examples of commercially available cross-linked polystyrene resins include the following: • Cross-linked polystyrene beads (product name: Fine Pearl 3000SPQ, manufactured by Matsuura Co., Ltd., sphericity: 0.95)

[0035] Among these, (vinyl dimethicone / methicone silsesquioxane) crosspolymer, methyl methacrylate crosspolymer, and (lauryl methacrylate / sodium methacrylate) crosspolymer are preferred from the viewpoint of their deodorizing effect on body odor and the absence of skin tightness after use.

[0036] There are no particular restrictions on the content of the spherical powder made of the polymer substance (ii) and it can be appropriately selected depending on the purpose, but from the viewpoint of deodorizing effect on body odor, skin slipperiness when wiping, and no white residue when used, it is preferable that it is 0.5% by mass or more and 4.5% by mass or less, and more preferably 1.2% by mass or more and 3.5% by mass or less, relative to the total amount of the liquid composition (B). The content of the spherical powder made of the polymer substance (ii) is 0.5% by mass or more relative to the total amount of the liquid composition (B) is preferable because it provides excellent deodorizing effect on body odor and smoothness of the skin when wiping. The content of the spherical powder made of the polymer substance (ii) is preferably 4.5% by mass or less relative to the total amount of the liquid composition (B), as this provides excellent results in preventing white residue during use.

[0037] The average particle size of the spherical powder made of the polymer substance (ii) is not particularly limited and can be appropriately selected depending on the purpose, but it is preferably 0.5 μm or more and 30 μm or less.

[0038] In the liquid composition (B) described above, the ratio of the content of the multi-lobed flat cross-section polyester fibers (i) to the content of the spherical powder made of the polymer substance (ii) [(i) / (ii)] (hereinafter sometimes referred to as the ratio [(i) / (ii)]) is preferably 18 to 63, and more preferably 25 to 45, from the viewpoint of deodorizing effect on body odor and suppression of pilling. When the ratio [(i) / (ii)] is between 18 and 63, the deodorizing effect on body odor is improved, and lint formation in the sheet-type cosmetic after wiping is suppressed, which is preferable.

[0039] <<(B) Other components in the liquid composition>> Other components in the liquid composition (B) described above are not particularly limited and can be appropriately selected depending on the purpose. Examples include oils and fats, waxes, polyhydric alcohols, (ii) silicones other than spherical powders made of polymeric substances, hydrocarbon oils, higher fatty acids, lower alcohols, higher alcohols, synthetic ester oils, surfactants, polymeric compounds, antioxidants, pigments, fragrances, emulsifying stabilizers, pH adjusters, astringents, preservatives, UV absorbers, chelating agents, humectants, thickeners, anti-inflammatory agents, amino acids, vitamins, various plant extracts, disinfectants, antiperspirants, cooling agents, water, and the like. The content of other components in the liquid composition (B) is not particularly limited as long as it does not impair the effects of the present invention, and can be appropriately selected depending on the purpose.

[0040] -Lower alcohol- There are no particular restrictions on the aforementioned lower alcohols, and they can be appropriately selected depending on the purpose. Examples include ethanol and isopropyl alcohol. The content of the lower alcohol is not particularly limited as long as it does not impair the effects of the present invention, and can be appropriately selected depending on the purpose. However, in order to obtain a stable deodorizing effect by improving the dispersibility of the powder, it is preferably 5% by mass or more and 55% by mass or less, and more preferably 18% by mass or more and 35% by mass or less, relative to the total amount of the liquid composition (B). The aforementioned lower alcohol may be synthesized as appropriate, or a commercially available product may be used. There are no particular restrictions on the method of synthesizing the lower alcohol, and it can be appropriately selected according to the purpose. Examples of commercially available lower alcohols include the product name Traceable 95 Grade 1 (Fermented Ethanol) (manufactured by Nippon Alcohol Industry Co., Ltd.).

[0041] -(ii) Silicones other than spherical powders made of polymeric substances- There are no particular restrictions on the silicones other than the spherical powders made of polymeric substances (ii) mentioned above, and they can be appropriately selected depending on the purpose, for example, dimethylpolysiloxane. Note that "(ii) Silicones other than spherical powders made of polymeric substances" are sometimes referred to as other silicones. The content of the other silicones mentioned above is not particularly limited as long as it does not impair the effects of the present invention, and can be appropriately selected depending on the purpose, but it is preferably 0.01% by mass or more and 1.0% by mass or less based on the total amount of the liquid composition (B). The aforementioned other silicones may be synthesized as appropriate or commercially available products may be used. There are no particular restrictions on the synthesis method of these other silicones, and they can be appropriately selected according to the purpose. Examples of commercially available other silicones include, by trade name, KF-96-5CS (dimethylpolysiloxane), KF-96-10CS (dimethylpolysiloxane), KF-96-30CS (dimethylpolysiloxane) (all manufactured by Shin-Etsu Chemical Co., Ltd.), SH200 C Fluid 5CS (dimethylpolysiloxane), SH200 C Fluid 10CS (dimethylpolysiloxane) (all manufactured by Dow Toray Industries, Inc.), and BELSIL DM3102E (kinematic viscosity at 25°C is 100,000 mmHg). 2 / s or more 500,000mm 2 Dimethylpolysiloxane with a kinematic viscosity of less than / s and a kinematic viscosity of 10 mm² at 25°C. 2 Examples include a mixture of dimethylpolysiloxane (manufactured by Asahi Kasei Wacker Silicone Co., Ltd.) and others.

[0042] - Preservatives - There are no particular restrictions on the preservatives mentioned above, and they can be appropriately selected depending on the purpose. Examples include ethylparaben, propylparaben, and phenoxyethanol. The amount of the preservative is not particularly limited as long as it does not impair the effects of the present invention, and can be appropriately selected depending on the purpose, but it is preferably 0.05% by mass or more and 0.3% by mass or less based on the total amount of the liquid composition (B). The aforementioned preservative may be synthesized as appropriate or a commercially available product may be used. There are no particular restrictions on the method of synthesizing the preservative, and it can be appropriately selected according to the purpose. Examples of commercially available preservatives include Mekkinsu-E (ethylparaben) and Mekkinsu-P (propylparaben) (both manufactured by Ueno Pharmaceutical Co., Ltd.), which are sold under trade names.

[0043] -Polyhydric alcohols- There are no particular restrictions on the polyhydric alcohol, and it can be appropriately selected depending on the purpose. Examples include 1,3-butylene glycol, glycerin, and propylene glycol. The content of the polyhydric alcohol is not particularly limited as long as it does not impair the effects of the present invention, and can be appropriately selected depending on the purpose, but it is preferably 0.1% by mass or more and 1.0% by mass or less based on the total amount of the liquid composition (B). The aforementioned polyhydric alcohol may be synthesized as appropriate or a commercially available product may be used. There are no particular restrictions on the method of synthesizing the polyhydric alcohol, and it can be appropriately selected according to the purpose. Examples of commercially available polyhydric alcohols include 1,3-butylene glycol (manufactured by Daicel Corporation) under the trade name.

[0044] -Refreshing agent- There are no particular restrictions on the cooling agent, and it can be appropriately selected depending on the purpose. For example, menthol is one such example. The content of the cooling agent is not particularly limited as long as it does not impair the effects of the present invention, and can be appropriately selected depending on the purpose, but it is preferably 0.01% by mass or more and 1.2% by mass or less based on the total amount of the liquid composition (B). The cooling agent may be synthesized as appropriate or a commercially available product may be used. There are no particular restrictions on the method of synthesizing the cooling agent, and it can be appropriately selected according to the purpose. Examples of commercially available cooling agents include l-menthol (manufactured by Takasago International Corporation), which is sold under the trade name.

[0045] - Surfactants - The surfactant is not particularly limited and can be appropriately selected depending on the purpose. Examples include polyoxyethylene hydrogenated castor oil. The amount of surfactant is not particularly limited as long as it does not impair the effects of the present invention, and can be appropriately selected depending on the purpose, but it is preferably 0.01% by mass or more and 1.0% by mass or less based on the total amount of the liquid composition (B). The surfactant may be synthesized as appropriate or a commercially available product may be used. There are no particular restrictions on the method of synthesizing the surfactant, and it can be appropriately selected according to the purpose. Examples of commercially available surfactants include NIKKOL HCO-60 and NIKKOL HCO-80 (both manufactured by Nikko Chemicals Co., Ltd.) under trade names.

[0046] -water- There are no particular restrictions on the water mentioned above, and it can be selected as appropriate depending on the purpose. The amount of water is not particularly limited as long as it does not impair the effects of the present invention and can be appropriately selected depending on the purpose, but it is preferably 55% by mass or more and 75% by mass or less, and more preferably 60% by mass or more and 70% by mass or less, based on the total amount of the liquid composition (B) above.

[0047] -viscosity- There are no particular restrictions on the viscosity of the liquid composition (B) at 25°C, and it can be appropriately selected depending on the purpose. However, it is preferable that the viscosity of the liquid composition (B) is between 0.5 mPa·s and 10 mPa·s, as this provides good impregnation of the nonwoven fabric (A). As for the method of measuring the viscosity, a known measurement method can be appropriately selected. For example, a BM-type viscometer can be used, with rotor No. 1, and the measurement can be performed at 60 rpm for 1 minute.

[0048] ―pH― There are no particular restrictions on the pH of the liquid composition (B) at 25°C, and it can be set appropriately depending on the purpose, but it is preferably 5.0 or more and 8.5 or less. There are no particular limitations on the method for measuring pH, but for example, (B) a method in which the liquid composition is kept at a constant temperature of 25°C, and then the pH is measured after 3 minutes at 25°C using a pH meter (product name: HM-30R, manufactured by TOA DKK).

[0049] -(B) Method for producing liquid compositions- There are no particular limitations on the method for producing the liquid composition (B) and can be appropriately selected depending on the purpose. For example, (ii) it can be produced by mixing spherical powder made of a polymer substance, a lower alcohol such as ethanol or isopropyl alcohol, and water.

[0050] The liquid composition (B) may be manufactured using an apparatus. There are no particular restrictions on the apparatus, and it can be appropriately selected depending on the purpose, but an agitator equipped with shear force and multiple stirring blades (e.g., propellers, turbines, dispersers, etc.) that can mix the entire contents is preferred.

[0051] The sheet-like cosmetic composition of the present invention is preferably stored in a package. There are no particular restrictions on the package, and any package commonly used for sheet-like cosmetic compositions can be appropriately selected and used.

[0052] <Method for manufacturing sheet-type cosmetic> The sheet-like cosmetic can be obtained by impregnating the (A) nonwoven fabric with the (B) liquid composition. There are no particular restrictions on the impregnation ratio (mass ratio) (liquid composition / nonwoven fabric) of the liquid composition (B) to the nonwoven fabric (A), and it can be appropriately selected depending on the purpose, but a range of 3 to 6 is preferred, and a range of 3.5 to 5.0 is more preferred.

[0053] There are no particular limitations on the method for impregnating the nonwoven fabric (A) with the liquid composition (B), and known methods can be appropriately selected. Examples include dropping or spraying the liquid composition (B) onto the nonwoven fabric (A), coating the nonwoven fabric (A) with the liquid composition (B), or immersing the nonwoven fabric (A) in the liquid composition (B).

[0054] -Applications- The sheet-type cosmetic composition of the present invention is suitable for use in applications such as facial sweat wipes, body sweat wipes, body deodorant wipes, foot wipes, nursing care cleansing wipes, sebum wipes, and wakefulness wipes, due to its excellent deodorizing effect on body odor, lack of lint after wiping, smooth skin glide during wiping, and lack of skin stiffness after wiping. [Examples]

[0055] The present invention will be specifically described below with reference to examples, comparative examples, and formulation examples, but the present invention is not limited in any way to these examples.

[0056] Tables 1 to 6 show the content of each component in the Examples, Comparative Examples, and Formulation Examples, all expressed in mass percent and converted to pure content. In Tables 1 to 6, the values ​​for (i) component and (i) comparative component indicate the content (mass percent) in the nonwoven fabric, while the values ​​for (ii) component, (ii) comparative component, and other components indicate the content (mass percent) in the liquid composition. The mass ratio [(i) / (ii)] of the content of (i) multi-lobed flat cross-section polyester fibers to (ii) spherical powder made of polymeric material was rounded to one decimal place by two decimal places. For the common component ethanol, traceable 95 Grade 1 (95 degrees, fermented alcohol) (manufactured by Nippon Alcohol Industry Co., Ltd.) was used, and the value converted to anhydrous ethanol (content (mass percent) converted to anhydrous ethanol) is indicated.

[0057] (Examples 1-17 and Comparative Examples 1-3) <Preparation of liquid compositions> Liquid compositions were prepared based on the compositions and content shown in Tables 1 to 4 below. Specifically, menthol, dimethylpolysiloxane, ethylparaben, propylparaben, polyoxyethylene hydrogenated castor oil (60 E.O.), and fragrance were dispersed or dissolved in ethanol, then 1,3-butylene glycol and water (purified water) were added, and finally (ii) spherical powders consisting of a polymer substance were added and dispersed to obtain the liquid compositions of Examples 1 to 17 and Comparative Examples 1 to 3. In Comparative Example 2, (ii) Matsumoto Microsphere M-310 (manufactured by Matsumoto Oil & Fat Pharmaceutical Co., Ltd.), which has a bowl shape, was used as the comparative component. In Comparative Example 3, (ii) anhydrous silicic acid (product name: Sunsphere H121, manufactured by AGC Inc.), which does not fall under the category of a powder made of a polymeric substance, was used as the comparative component. The viscosity of each liquid composition in Examples 1-17 and Comparative Examples 1-3 at 25°C was in the range of 0.5 mPa·s to 10 mPa·s. The viscosity of each liquid composition was measured using a BM-type viscometer with a No. 1 rotor at 60 rpm for 1 minute. The pH of each liquid composition in Examples 1-17 and Comparative Examples 1-3 was adjusted to 7.0-8.5.

[0058] <Preparation of sheet-type cosmetic products> Nonwoven fabric (multi-lobed flat cross-section polyester fiber / fine rayon, manufactured by Yamato Spinning Co., Ltd.) was impregnated with the liquid compositions of Examples 1 to 17 and Comparative Examples 1 to 3 to prepare sheet-like cosmetic materials. Specifically, the nonwoven fabric was impregnated with each of the liquid compositions from Examples 1 to 17 and Comparative Examples 1 to 3 such that the impregnation ratio (mass ratio) = (liquid composition / nonwoven fabric) was as shown in Tables 1 to 4.

[0059] Each sheet-type cosmetic prepared using the liquid compositions of Examples 1-17 and Comparative Examples 1-3 was evaluated using the following evaluation methods for "deodorizing effect on body odor," "lack of lint in the sheet-type cosmetic after wiping," "skin glide during wiping," "lack of skin stiffness after wiping," and "lack of white residue after wiping." The results are shown in Tables 1-4.

[0060] <Evaluation of the deodorizing effect on body odor> Nine healthy panelists were given sheet-type cosmetic formulations of Examples 1-17 and Comparative Examples 1-3 in vials, and 0.05g of model body odor was added to each vial. Aroma evaluation was then conducted. The "deodorizing effect on body odor" was evaluated based on the following evaluation criteria. After calculating the average value for the nine panelists, a judgment was made based on the following criteria. For the model body odor, a mixture was used containing 0.0075% by mass of isovaleric acid, 0.0005% by mass of trimethylamine, 0.0020% by mass of 1-octen-3-one, and ethanol added to a total of 100% by mass. -Evaluation Criteria for "Body Odor Eliminating Effect"- 5 points: No smell detected 4 points: Slightly noticeable odor. 3 points: I can smell it. 2 points: Strong odor. 1 point: The smell is very strong. - Criteria for determining the "deodorizing effect on body odor" - ◎: 4.5 points or higher, 5 points ○: 3.5 points or more, less than 4.5 points △: 2.0 points or higher, less than 3.5 points ×: Less than 2.0 points

[0061] <Evaluation of the absence of lint in sheet-type cosmetic products after wiping> Nine female professional evaluators in their 20s and 30s were asked to wipe a 10cm length of the inner side of their upper arm three times using the sheet-type cosmetic products of Examples 1-17 and Comparative Examples 1-3. The "lack of lint in the sheet-type cosmetic after wiping" was evaluated according to the following criteria. -Evaluation criteria for "lack of lint in sheet-type cosmetic products after wiping"- ◎: 9 people answered that they "don't mind the pilling." ○: 7 to 8 people answered that they "don't mind the pilling." △: 4 to 6 people answered that they "don't mind the pilling." ×: Three or fewer people answered "I don't mind the pilling."

[0062] <Evaluation of skin lubrication during wiping> Nine female professional evaluators in their 20s and 30s were asked to wipe a 10cm length of the inner side of their upper arm three times with samples from Examples 1-17 and Comparative Examples 1-3, and the "skin glide during wiping" was evaluated according to the following criteria. -Evaluation criteria for "skin glide during wiping"- ◎: Eight or more people answered that it "glided smoothly on the skin without resistance." ○: Six to seven people answered that the skin glides smoothly without resistance. △: Three to five people answered that it "glided smoothly on the skin without resistance." ×: Two or fewer people answered "Smooth and easy to glide over the skin without resistance."

[0063] <Evaluation of the absence of skin dryness after wiping> Nine female professional evaluators in their 20s and 30s were asked to wipe a 10cm length of the inner upper arm three times with samples from Examples 1-17 and Comparative Examples 1-3. Three minutes after use, the "lack of skin tightness after wiping" was evaluated according to the following criteria. -Evaluation criteria for "lack of skin tightness after wiping"- ◎: Eight or more people answered that they did not experience any skin tightness after wiping. ○: Six to seven people answered that they did not experience any skin tightness after wiping. △: 3 to 5 people answered that they did not experience any skin tightness after wiping. ×: Two or fewer people answered that "there is no squeaky feeling on the skin after wiping."

[0064] <Evaluation of the absence of white residue after wiping> Nine female professional evaluators in their 20s and 30s were asked to wipe a 10cm length of the inner side of their upper arm three times with samples from Examples 1-17 and Comparative Examples 1-3. Three minutes after use, the "absence of white residue after wiping" was evaluated according to the following criteria. -Evaluation criteria for "no white residue left after wiping"- ◎: 8 or more people answered that there was "no white residue after wiping". ○: 6 to 7 people answered that there was "no white residue after wiping". △: 3 to 5 people answered that there was "no white residue after wiping". ×: Two or fewer people answered that there was "no white residue after wiping".

[0065] [Table 1]

[0066] [Table 2]

[0067] [Table 3]

[0068] [Table 4]

[0069] (Prescription examples 1-10) Sheet-type cosmetic compositions with the compositions and contents shown in Tables 5 and 6 below were prepared in the same manner as in Example 1.

[0070] [Table 5]

[0071] [Table 6]

[0072] Details of each component used in the above-mentioned examples, comparative examples, and formulation examples are shown in Table 7 below.

[0073] [Table 7] [Industrial applicability]

[0074] The sheet-type cosmetic composition of the present invention is excellent in its deodorizing effect on body odor, lack of lint after wiping, smoothness of the skin during wiping, and lack of skin stiffness after wiping. Therefore, it can be suitably used, for example, as a facial sweat-wiping sheet, a body sweat-wiping sheet, a body deodorant sheet, a foot-wiping sheet, a nursing care cleansing sheet, a sebum-wiping sheet, a wake-up sheet, and so on.

Claims

1. A sheet-like cosmetic comprising (A) a nonwoven fabric and (B) a liquid composition impregnated into the nonwoven fabric, The (A) nonwoven fabric has (i) multi-lobed flat cross-section polyester fibers, The (B) liquid composition contains (ii) spherical powder made of a polymeric substance, The spherical powder made of the polymer substance (ii) is one or more selected from crosslinked silicone resin, acrylic resin, polyethylene resin, crosslinked polystyrene resin, and cellulose fine particles. The content of the spherical powder made of the polymer substance (ii) is 0.5% by mass or more and 4.5% by mass or less relative to the total amount of the liquid composition (B), The mass ratio of the content of the multi-lobed flat cross-section polyester fibers [(i) / (ii)] to the content of the spherical powder made of the polymer substance (ii) is 18 or more and 63 or less. A sheet-like cosmetic characterized in that the impregnation ratio (mass ratio) (liquid composition / nonwoven fabric) of the liquid composition (B) to the nonwoven fabric (A) is 3 to 6.

2. The mass ratio [(i) / (ii)] of the content of the multi-lobed flat cross-section polyester fibers to the content of the spherical powder made of the polymer substance (ii) is 25 or more and 45 or less. The sheet-like cosmetic composition according to claim 1.

3. The sheet-like cosmetic composition according to any one of claims 1 to 2, wherein the content of (i) multi-lobed flat cross-section polyester fibers is 30% by mass or more and 70% by mass or less with respect to the total amount of (A) nonwoven fabric.

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