Sheet products

Abstract

To provide a sheet product that suppresses re-attachment of contamination while securing the detergency of an aqueous detergent.SOLUTION: A sheet product in which a liquid composition containing the following components (A),(B) and (C) are impregnated into a sheet containing 5 mass% or more of hydrophobic fiber: (A) 0.5 to 9 mass% of nonionic surfactant; (B) 0.05 to 3 mass% of anionic surfactant having 45°C or more of Krafft point in terms of salt; and (C) 70 to 99.45 mass% of water, and in which a ratio (B) / (A) of the mass of component (B) in terms of salt with respect to the mass of component (A) is 0.03 to 1.0.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a sheet product. [Background technology]

[0002] Skin cleansing sheets containing aqueous detergents have been known. For example, Patent Document 1 describes a skin cleansing sheet comprising a specific nonwoven fabric and an aqueous detergent composition containing a nonionic surfactant, a polyhydric alcohol and / or a glycol ether, and an oil. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-314342 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the cleansing power of conventional skin cleansing sheets is mainly dependent on the cleansing power of the aqueous cleanser itself. Therefore, when wiping away dirt (e.g., makeup) from the skin, the dirt that was once lifted off the skin by the cleansing power of the aqueous cleanser returns to the skin (reattachment of the dirt), resulting in an inability to demonstrate high cleansing power. The present invention relates to a sheet product that can suppress the redeposition of dirt while ensuring the detergency of an aqueous detergent. [Means for solving the problem]

[0005] The inventors have discovered that by impregnating a sheet with a liquid composition containing a nonionic surfactant and a specific anionic surfactant in a specific ratio, it is possible to obtain a sheet product that exhibits high cleansing power by lifting dirt such as makeup from the skin while inhibiting the redeposition of the dirt.

[0006] The present invention relates to a sheet containing 5% by mass or more of hydrophobic fibers, The following components (A), (B), and (C): (A) 0.5 to 9 mass% of a nonionic surfactant, (B) 0.05 to 3 mass% of an anionic surfactant having a Krafft point of 45°C or higher, calculated as a salt, (C) Water 70~99.45% by mass wherein the ratio (B) / (A) of the mass of component (B) converted to a salt to the mass of component (A) is 0.03 to 1.0. Regarding sheet products. [Effects of the Invention]

[0007] The sheet product of the present invention can lift dirt such as makeup from the skin while preventing the dirt from re-adhering, thereby exhibiting high cleansing power. It can also prevent stickiness and residual feeling on the skin after use. DETAILED DESCRIPTION OF THE INVENTION

[0008] In the present invention, the nonionic surfactant used as component (A) in the liquid composition may be any of those commonly used in detergents, including, for example, sorbitan monostearate and other sorbitan fatty acid esters; glycerin fatty acid esters, polyglycerol fatty acid esters, such as polyglyceryl monoisostearate; polyoxyethylene fatty acid esters, such as propylene glycol fatty acid esters and polyethylene glycol monolaurate; sucrose fatty acid esters; polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan monostearate, polyoxyethylene cocoate sorbitan fatty acid esters; polyoxyethylene alkyl ethers; polyoxyethylene sorbitol fatty acid esters; polyoxyethylene glycerin fatty acid esters; polyoxyethylene propylene glycol fatty acid esters; polyoxyethylene castor oil; polyoxyethylene hydrogenated castor oil; polyoxyethylene hydrogenated castor oil fatty acid esters; alkyl polyglucosides; and polyoxyalkylene-modified silicones, such as polyoxyethylene-methylpolysiloxane copolymers. Among these nonionic surfactants, polyoxyethylene fatty acid esters, polyoxyethylene glycerin fatty acid esters, polyoxyethylene alkyl ethers, polyglycerin fatty acid esters, polyoxyethylene sorbitan fatty acid esters, sucrose fatty acid esters, and alkyl polyglucosides are preferred because of their good cleaning performance against oily stains and water-soluble stains.

[0009] Component (A) can be used alone or in combination of two or more, and the content of component (A) in the liquid composition is 0.5% by mass or more, preferably 1.5% by mass or more, and more preferably 2.5% by mass or more, from the viewpoint of facilitating the lifting of dirt from the skin, and 9% by mass or less, preferably 7.5% by mass or less, and more preferably 5% by mass or less, from the viewpoint of suppressing the redeposition of dirt and suppressing stickiness on the skin after wiping. The content of component (A) in the liquid composition is 0.5 to 9% by mass, preferably 1.5 to 7.5% by mass, and more preferably 2.5 to 5% by mass.

[0010] The anionic surfactant of component (B) used in the liquid composition has a Krafft point of 45° C. or higher. The nonionic surfactant component (A) acts on the dirt, lifting it from the skin while the concentration of component (A) in the liquid composition decreases. The anionic surfactant component (B), dissolved or finely dispersed in the liquid composition, precipitates on the surface of the lifted dirt due to its low water solubility (Kraft point of 45°C or higher). This promotes aggregation of the lifted dirt, inhibiting its dispersion into the liquid composition. As a result, the dirt is more likely to be adsorbed or entrained in the sheet, making it less likely to disperse in the liquid composition and reducing its chance of returning to the skin (redispersed in the liquid, returning to the skin, and reattaching). Furthermore, the dirt is less likely to migrate to the back side of the sheet, reducing stain transfer. These effects are due to the composition of the liquid composition and can be achieved regardless of the structure or composition of the sheet. The inclusion of hydrophobic fibers in the sheet enhances dirt adsorption and enhances this effect. In the present invention, the Krafft point is considered to be the melting point of the hydrated solid of the surfactant. In other words, it is the temperature at which the surfactant precipitates when the aqueous solution is cooled. Depending on the type of surfactant, the Krafft point varies depending on the concentration, but in the present invention, an anionic surfactant is used whose Krafft point at a 10% by mass concentration in aqueous solution is 45°C or higher. A differential scanning calorimeter can be used to measure the Krafft point.

[0011] Such anionic surfactants are not limited as long as they have a Krafft point of 45°C or higher at a concentration of 10% by mass in aqueous solution and are used in ordinary skin cleansers and cosmetics, but examples include polyoxyalkylene alkyl (or alkenyl) ether sulfates, alkyl (or alkenyl) sulfates, alkyl sulfonates, ether carboxylates, amide ether carboxylates, higher fatty acid salts, alkyl phosphate ester salts, N-acylamino acid salts, acylated isethionates, acylated taurates, N-alkylamido alkanol sulfate ester salts, polyoxyalkylene fatty acid amide ether sulfates, etc. Among these, from the viewpoint of skin smoothness after wiping, higher fatty acid salts (e.g., sodium salts having 14 or more carbon atoms, potassium salts having 18 or more carbon atoms) and N-acylamino acid salts (e.g., sodium salts having 12 or more carbon atoms, potassium salts) are preferred, with sodium stearate, sodium N-stearoyl-N-methyl taurate, and monosodium N-stearoyl glutamate being more preferred.

[0012] Component (B) can be used alone or in combination of two or more, and the content of component (B) converted to salt in the liquid composition is 0.05% by mass or more, preferably 0.1% by mass or more, more preferably 0.2% by mass or more, from the viewpoint of suppressing dirt redeposition, and 3% by mass or less, preferably 2.7% by mass or less, more preferably 1.5% by mass or less, even more preferably 1% by mass or less, from the viewpoint of suppressing residual feeling on the skin after wiping. The content of component (B) converted to salt in the liquid composition is 0.05 to 3% by mass, preferably 0.1 to 2.7% by mass, more preferably 0.2 to 1.5% by mass, even more preferably 0.2 to 1% by mass.

[0013] In the liquid composition, the ratio (B) / (A) of the mass of component (B) converted to a salt to the mass of component (A) is 0.03 or more, preferably 0.04 or more, more preferably 0.06 or more, from the viewpoint of suppressing soil redeposition, and 1.0 or less, preferably 0.6 or less, more preferably 0.45 or less, even more preferably 0.3 or less, from the viewpoint of suppressing residual feeling on the skin after wiping. Furthermore, the ratio (B) / (A) of the mass of component (B) converted to a salt to the mass of component (A) is 0.03 to 1.0, preferably 0.04 to 0.6, more preferably 0.06 to 0.45, even more preferably 0.06 to 0.3.

[0014] In the liquid composition, component (C), water, functions as a solvent to dissolve the other components. The content of component (C) in the liquid composition is 70% by mass or more, preferably 75% by mass or more, more preferably 80% by mass or more, and 99.45% by mass or less, preferably 98% by mass or less, more preferably 97% by mass or less, from the viewpoint of improving stain removal and refreshing feel. The content of component (C) in the liquid composition is 70 to 99.45% by mass, preferably 75 to 98% by mass, more preferably 80 to 97% by mass.

[0015] The liquid composition can further contain a water-soluble polymer as component (D). Concentration of the water-soluble polymer of component (D) on the surface of the sheet improves the sheet product's adhesion to the skin, increasing the adhesion between the skin and the liquid composition. As a result, even if the amount of nonionic surfactant of component (A) in the liquid composition remains the same, the stain removal ability (makeup removal) on the skin can be improved. Furthermore, increasing the viscosity of the liquid composition reduces the sheet product's abrasion on the skin, improving the feel on the skin. Furthermore, adjusting the rate of moisture evaporation results in a sustained moist feeling after wiping. Examples of the water-soluble polymer of component (D) include acrylic acid / alkyl (meth)acrylate copolymers such as acrylic acid / alkyl acrylate crosspolymers, and cellulose with a hydroxyalkyl group attached thereto.

[0016] Examples of acrylic acid / alkyl (meth)acrylate copolymers that can be used include commercially available products such as Pemulen TR-1, Pemulen TR-2, Carbopol ETD2020, Carbopol 1382, and Carbopol 1342 (all manufactured by Lubrizol Advanced Materials), and AQUPEC HV-501ER (manufactured by Sumitomo Seika Chemicals).

[0017] Examples of cellulose having a hydroxyalkyl group added include hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxyethyl methyl cellulose, hydroxypropyl methyl cellulose, etc. For example, commercially available hydroxypropyl cellulose such as NISSO HPC (manufactured by Nippon Soda Co., Ltd.) can be used.

[0018] In order to prevent soil redeposition, the water-soluble polymer of component (D) preferably has an alkyl group having 3 or more carbon atoms, such as a propyl group, an isopropyl group, or a butyl group. Component (D) can be used alone or in combination of two or more types, and the content of component (D) in the liquid composition is preferably 0.01% by mass or more, more preferably 0.03% by mass or more, and even more preferably 0.05% by mass or more, from the viewpoints of improving skin cleansing power and skin feel and maintaining moisturized feeling after wiping, and is preferably 0.3% by mass or less, more preferably 0.25% by mass or less, and even more preferably 0.2% by mass or less, from the viewpoint of suppressing stickiness on the skin after wiping. The content of component (D) in the liquid composition is preferably 0.01 to 0.3% by mass, more preferably 0.03 to 0.25% by mass, and even more preferably 0.05 to 0.2% by mass.

[0019] The viscosity at 30°C of the liquid composition containing component (D) is preferably 5 mPa·s or more in terms of improving the cleansing power and feel on the skin, and is preferably 150 mPa·s or less in terms of improving the impregnation of the sheet with the liquid composition. In the present invention, the viscosity at 30°C is measured at 30°C using a digital viscometer (TVB-10, manufactured by Toki Sangyo Co., Ltd., rotor No. 2, 60 rpm).

[0020] The liquid composition may further contain a powder as component (E). By containing component (E), the sticky feeling after wiping can be further reduced and a smooth feeling can be imparted to the skin. As the powder of component (E), any powder that is commonly used in cosmetics can be used. Among the powders, examples of inorganic powders include talc, silicic anhydride (silica), mica, kaolin, sericite, titanium oxide-coated mica (titanium mica), zinc oxide, titanium oxide, magnesium sulfate, magnesium carbonate, and the like. Of these, from the viewpoint of reducing the sticky feeling after wiping and improving the smooth feel on the skin, it is preferable to contain one or more types selected from talc, titanium oxide, silicic anhydride (silica), mica, and kaolin, more preferably to contain one or more types selected from talc, titanium oxide, and silicic anhydride (silica), and even more preferably to contain one or two types selected from talc and silicic anhydride (silica).

[0021] Examples of organic powders include polymethyl methacrylate, polymethylsilsesquioxane, dimethylpolysiloxane polymer, (lauryl methacrylate / sodium methacrylate) crosspolymer, and aluminum octenyl succinate starch ester. Of these, in order to reduce the sticky feeling after wiping and improve the smooth feeling on the skin, it is preferable to contain one or more selected from polymethylsilsesquioxane, dimethylpolysiloxane polymer, and (lauryl methacrylate / sodium methacrylate) crosspolymer, and it is more preferable to contain (lauryl methacrylate / sodium methacrylate) crosspolymer.

[0022] Component (E) can be used alone or in combination of two or more. The content of component (E) in the liquid composition is preferably 0.05% by mass or more, more preferably 0.07% by mass or more, and even more preferably 0.1% by mass or more, from the viewpoint of reducing stickiness after wiping and imparting a smooth feel to the skin, and is preferably 10% by mass or less, more preferably 9% by mass or less, and even more preferably 7% by mass or less, from the viewpoint of suppressing residual feeling on the skin. The content of component (E) in the liquid composition is preferably 0.05 to 10% by mass, more preferably 0.07 to 9% by mass, and even more preferably 0.1 to 7% by mass.

[0023] In addition to the above-mentioned components, the liquid composition may contain components used in ordinary skin cleansers, such as surfactants other than the above-mentioned components, oily components, moisturizers, disinfectants, alcohols, anti-inflammatory agents, preservatives, chelating agents, salts, pearlizing agents, fragrances, cooling agents, pigments, ultraviolet absorbers, antioxidants, plant extracts, etc. Examples of oily components include ester oil, silicone oil, hydrocarbon oil, etc. When an oily component is contained, the content of the oily component (excluding component (A)) in the liquid composition is preferably 18% by mass or less, more preferably 15% by mass or less, and even more preferably 10% by mass or less, from the viewpoint of suppressing redeposition of dirt.

[0024] The liquid composition can be produced by a conventional method. For example, it can be produced by weighing, mixing, and stirring each component. Heating may be performed as needed. It is particularly preferable to heat the mixture to a temperature equal to or higher than the Krafft point of component (B) to fully dissolve it.

[0025] In the present invention, such a liquid composition is used by impregnating a sheet. The sheet used in the present invention is not particularly limited, and any cloth-like material containing natural or synthetic fibers, such as woven fabric, knitted fabric, felt, or nonwoven fabric, can be used. An example of natural fibers is cellulose fiber. As the sheet to be impregnated with the liquid composition, a nonwoven fabric is preferred from the viewpoints of conformability to a three-dimensional shape, improved usability, ease of processing, and the like. The nonwoven fabric may be produced by any of methods such as heat fusion, spunbonding, and hydroentanglement (spunlace).

[0026] The sheet preferably contains hydrophobic fibers, since this makes it easy to prevent redeposition of dirt and allows a large amount of impregnating liquid to be released during wiping. Examples of hydrophobic fibers include polyolefin fibers such as polyethylene and polypropylene, polyester fibers such as polyethylene terephthalate, polyamide fibers such as nylon, polyacrylonitrile fibers, polyvinyl alcohol fibers, and synthetic fibers such as polyurethane fibers. Among these, it is preferable to use one or more types selected from polyolefin fibers and polyester fibers because of their low price and good availability in the market.Furthermore, fibers in which multiple materials are heat-fused can also be used, and composite fibers such as core-sheath type and parallel type can also be used. The sheet preferably contains 5% by mass or more of hydrophobic fibers, more preferably 10% by mass or more, and even more preferably 15% by mass or more, in order to more easily prevent redeposition of dirt and to release a large amount of impregnating liquid when wiping.

[0027] The sheet preferably contains hydrophilic fibers, as this reduces the feeling of rubbing against the skin and improves the feel against the skin. Examples of hydrophilic fibers include cotton, rayon, and pulp. Among these, it is preferable to use one or two types selected from cotton and rayon, because they are inexpensive, readily available on the market, and have good adhesion to the skin, improving the feel on the skin. When cotton and rayon are used in combination, any mixing ratio is acceptable from the above viewpoints. The sheet preferably contains 10% by mass or more of hydrophilic fibers, more preferably 30% by mass or more, and even more preferably 65% ​​by mass or more, in order to further reduce the feeling of rubbing against the skin and further improve the feel against the skin.

[0028] These hydrophobic fibers and hydrophilic fibers may be used either individually or in combination of two or more. When the sheet contains hydrophobic fibers and hydrophilic fibers, the mass ratio of the hydrophobic fibers to the hydrophilic fibers is preferably hydrophobic fibers / hydrophilic fibers = 5 / 95 to 70 / 30, and more preferably 15 / 85 to 35 / 65, in order to simultaneously suppress redeposition of dirt, release a large amount of impregnating liquid during wiping, reduce the feeling of friction on the skin, and improve the feel against the skin.

[0029] The density of the sheet is set to 0.14 g / cm, which allows a large amount of impregnated liquid to be released during wiping and reduces skin abrasion caused by the sheet product. 3 Preferably, it is 0.12 g / cm or less. 3 Less than 0.11 g / cm is more preferable. 3 The density of the sheet is more preferably 0.08 g / cm or less, from the viewpoint of facilitating impregnation of the sheet with the liquid composition and improving the retention of the composition in the sheet. 3 It is preferable that the density is 0.1 g / cm or more. 3 The above is more preferable. The basis weight of the sheet is 35 to 80 g / m2, which allows a large amount of impregnated liquid to be released during wiping and reduces skin abrasion caused by the sheet product. 2 It is preferable that the thickness is 38 to 60 g / m 2 More preferably, 40 to 50 g / m 2 is more preferable. The thickness of the sheet is preferably 0.3 to 0.6 mm, more preferably 0.35 to 0.55 mm, and even more preferably 0.38 to 0.5 mm, from the viewpoints of ease of wiping and maintaining a pleasant feel on the skin. The shape and size of the sheet are not particularly limited and can be set appropriately depending on the purpose. The sheet may be a multilayer sheet in which two or more sheets of one type or two or more types (different in composition, etc.) are laminated together, and may be a woven fabric laminate, a nonwoven fabric laminate, a woven fabric and a nonwoven fabric laminate, etc. In this case, the above basis weight and thickness can be used for the entire multilayer sheet.

[0030] The sheet product of the present invention is obtained by impregnating such a sheet with the liquid composition. The impregnation rate of the liquid composition into the sheet is preferably 250 to 700% by mass, more preferably 300 to 600% by mass, based on the mass of the sheet, from the viewpoint of a good feel during wiping. The impregnation rate can be set as the increase when a certain amount of liquid composition is impregnated into the sheet before the sheet is impregnated with the liquid composition.

[0031] The method for impregnating the sheet with the liquid composition is not particularly limited, and examples thereof include a method of dropping or spraying the liquid composition onto the sheet, a method of immersing the sheet in the liquid composition, etc. After impregnation with the liquid composition, it is preferable to package the sheet in an aluminum pouch or the like with good sealing properties in order to prevent the components from volatilizing from the composition.

[0032] The sheet impregnated with the liquid composition is suitable as a skin cleansing sheet and can be used to cleanse skin stains, such as makeup cosmetics such as foundation, blush, and eye shadow, and stains such as solid sebum, etc. In particular, it is suitable for use in removing makeup cosmetics because the effect of inhibiting redeposition of stains is significantly exhibited. The skin cleansing sheet of the present invention can be used, for example, by pressing it against the area where stains such as makeup cosmetics are to be removed and wiping it off. Skin cleansing sheets (sheet-type makeup removers) for removing makeup cosmetics (hereinafter simply referred to as makeup) are characterized by their convenience, allowing them to be used anytime, anywhere. However, they present challenges in terms of "makeup removal" and "skin chafing." One major reason for this is that makeup that has been wiped off once disperses in the impregnating liquid and returns to the skin, causing dirt to re-adhere (skin return). This skin return can prevent the dirt from being completely removed. Furthermore, repeated wiping can lead to skin chafing. This invention uses the novel concept of allowing dirt to be absorbed into the sheet, thereby realizing a sheet-type makeup remover that prevents dirt from returning to the skin and allows makeup to be removed without repeated rubbing. This technology helps to solve both of the above-mentioned challenges of sheet-type makeup removers: "makeup removal" and "skin chafing."

[0033] In relation to the above-described embodiment, the present invention further discloses the following sheet products, etc.

[0034] <1> A sheet containing 5% by mass or more of hydrophobic fibers, and the following components (A), (B), and (C): (A) 0.5 to 9 mass% of a nonionic surfactant, (B) 0.05 to 3 mass% of an anionic surfactant having a Krafft point of 45°C or higher, calculated as a salt, (C) Water 70~99.45% by mass wherein the ratio (B) / (A) of the mass of component (B) converted to a salt to the mass of component (A) is 0.03 to 1.0. Sheet products.

[0035] <2> The component (A) is preferably a polyoxyethylene fatty acid ester, a polyoxyethylene glycerin fatty acid ester, a polyoxyethylene alkyl ether, a polyglycerin fatty acid ester, a polyoxyethylene sorbitan fatty acid ester, a sucrose fatty acid ester, or an alkyl polyglucoside, with polyoxyethylene fatty acid esters and polyoxyethylene glycerin fatty acid esters being more preferred. <1> The sheet product described. <3> The content of component (A) in the liquid composition is preferably 1.5% by mass or more, more preferably 2.5% by mass or more, and is preferably 7.5% by mass or less, more preferably 5% by mass or less. <1> or <2> The sheet product described.

[0036] <4> The component (B) is preferably a higher fatty acid salt or an N-acylamino acid salt, and more preferably sodium stearate, sodium N-stearoyl-N-methyl taurine, or monosodium N-stearoyl glutamate. <1> ~ <3> A sheet described in any one of the above. <5> The content of component (B) in the liquid composition is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, and is preferably 2.7% by mass or less, more preferably 1.5% by mass or less, and even more preferably 1% by mass or less. <1> ~ <4> 1. The sheet product according to any one of the preceding items.

[0037] <6> In the liquid composition, the ratio (B) / (A) of the mass of the component (B) converted to a salt to the mass of the component (A) is preferably 0.04 or more, more preferably 0.06 or more, and is preferably 0.6 or less, more preferably 0.45 or less, and even more preferably 0.3 or less. <1> ~ <5> 1. The sheet product according to any one of the preceding items. <7> The content of component (C) in the liquid composition is preferably 75% by mass or more, more preferably 80% by mass or more, and is preferably 98% by mass or less, more preferably 97% by mass or less. <1> ~ <6> 1. The sheet product according to any one of the preceding items.

[0038] <8> The liquid composition further contains (D) a water-soluble polymer. <1> ~ <7> 1. The sheet product according to any one of the preceding items. <9> The component (D) is preferably an acrylic acid / (meth)acrylate alkyl copolymer or a cellulose having a hydroxyalkyl group added thereto, and more preferably an acrylic acid / (meth)acrylate alkyl copolymer or a hydroxypropyl cellulose. <8> The sheet product described. <10> The component (D) preferably has an alkyl group having 3 or more carbon atoms. <8> or <9> The sheet product described. <11> The content of component (D) in the liquid composition is preferably 0.01% by mass or more, more preferably 0.03% by mass or more, and even more preferably 0.05% by mass or more, and is preferably 0.3% by mass or less, more preferably 0.25% by mass or less, and even more preferably 0.2% by mass or less. <8> ~ <10> 1. The sheet product according to any one of the preceding items. <12> The viscosity of the liquid composition containing component (D) at 30°C is preferably 5 mPa·s or more and 150 mPa·s or less. <8> ~ <11> 1. The sheet product according to any one of the preceding items.

[0039] <13> The liquid composition further contains (E) a powder. <1> ~ <12> 1. The sheet product according to any one of the preceding items. <14> Component (E) is preferably an inorganic powder, and more preferably contains one or more selected from talc, titanium oxide, silicic anhydride (silica), mica, and kaolin, even more preferably contains one or more selected from talc, titanium oxide, and silicic anhydride (silica), and even more preferably contains one or two selected from talc and silicic anhydride (silica). <13> The sheet product described. <15> Component (E) is preferably an organic powder, and more preferably contains one or more selected from polymethylsilsesquioxane, dimethylpolysiloxane polymer, and (lauryl methacrylate / sodium methacrylate) crosspolymer, and further preferably contains (lauryl methacrylate / sodium methacrylate) crosspolymer. <13> The sheet product described. <16> The content of component (E) in the liquid composition is preferably 0.05% by mass or more, more preferably 0.07% by mass or more, and even more preferably 0.1% by mass or more, and is preferably 10% by mass or less, more preferably 9% by mass or less, and even more preferably 7% by mass or less. <13> ~ <15> 1. The sheet product according to any one of the preceding items.

[0040] <17> The liquid composition further contains an oily component other than the component (A). <1> ~ <16> 1. The sheet product according to any one of the preceding items. <18> The content of oily components other than component (A) in the liquid composition is preferably 18% by mass or less, more preferably 15% by mass or less, and even more preferably 10% by mass or less. <17> The sheet product described.

[0041] <19> The hydrophobic fiber is preferably a synthetic fiber selected from polyolefin-based fibers, polyester-based fibers, polyamide-based fibers, polyacrylonitrile-based fibers, polyvinyl alcohol-based fibers, and polyurethane fibers, and more preferably includes one or two types selected from polyolefin-based fibers and polyester-based fibers. <1> ~ <18> 1. The sheet product according to any one of the preceding items. <20> The sheet preferably contains hydrophobic fibers in an amount of 10% by mass or more, more preferably 15% by mass or more. <1> ~ <19> 1. The sheet product according to any one of the preceding items.

[0042] <21> The sheet preferably contains hydrophilic fibers. <1> ~ <20> 1. The sheet product according to any one of the preceding items. <22> The hydrophilic fiber preferably contains one or two types selected from cotton and rayon. <21> The sheet product described. <23> The sheet preferably contains hydrophilic fibers in an amount of 10% by mass or more, more preferably 30% by mass or more, and even more preferably 65% ​​by mass or more. <21> or <22> The sheet product described. <24> The sheet preferably contains hydrophobic fibers and hydrophilic fibers, and the mass ratio of the hydrophobic fibers to the hydrophilic fibers is preferably hydrophobic fibers / hydrophilic fibers=5 / 95 to 70 / 30, more preferably 15 / 85 to 35 / 65. <1> ~ <23> 1. The sheet product according to any one of the preceding items.

[0043] <25> The density of the sheet is preferably 0.14 g / cm 3 Less than or equal to 0.12 g / cm 3 Less than 0.11 g / cm is more preferable.3 More preferably, 0.08 g / cm 3 More than 0.1 g / cm is preferable. 3 The above is more preferable. <1> ~ <24> 1. The sheet product according to any one of the preceding items. <26> The basis weight of the sheet is preferably 35 to 80 g / m 2 38 to 60 g / m 2 More preferably, 40 to 50 g / m 2 is more preferred, <1> ~ <25> 1. The sheet product according to any one of the preceding items. <27> The thickness of the sheet is preferably 0.3 to 0.6 mm, more preferably 0.35 to 0.55 mm, and even more preferably 0.38 to 0.5 mm. <1> ~ <26> 1. The sheet product according to any one of the preceding items. <28> The impregnation rate of the liquid composition into the sheet is preferably 250 to 700% by mass, more preferably 300 to 600% by mass, based on the mass of the sheet. <1> ~ <27> 1. The sheet product according to any one of the preceding items.

[0044] <29> The above-mentioned is for cleansing the skin. <1> ~ <28> 1. The sheet product according to any one of the preceding items. <30> The above-mentioned cosmetic composition is for removing makeup. <1> ~ <29> 1. The sheet product according to any one of the preceding items. <31> Press it against the area you want to remove dirt from and wipe it away. <1> ~ <30> 1. The sheet product according to any one of the preceding items.

[0045] <32> A sheet containing 5% by mass or more of hydrophobic fibers, and the following components (A), (B), and (C): (A) 0.5 to 9 mass% of a nonionic surfactant, (B) 0.05 to 3 mass% of an anionic surfactant having a Krafft point of 45°C or higher, calculated as a salt, (C) Water 70~99.45% by mass Contains A sheet product impregnated with a liquid composition in which the ratio (B) / (A) of the mass of component (B) converted to a salt to the mass of component (A) is 0.03 to 1.0, A skin cleansing method in which the product is applied to the skin and wiped off.

[0046] <33> A sheet containing 5% or more by mass of hydrophobic fibers, The following components (A), (B), and (C): (A) 0.5 to 9 mass% of a nonionic surfactant, (B) 0.05 to 3 mass% of an anionic surfactant having a Krafft point of 45°C or higher, calculated as a salt, (C) Water 70~99.45% by mass Contains impregnating the surface with a liquid composition in which the ratio (B) / (A) of the mass of component (B) converted to a salt to the mass of component (A) is 0.03 to 1.0; This is a method for cleansing the skin, in which the sheet is applied to the skin and wiped off.

[0047] <34> The aforementioned <1> ~ <31> A skin cleansing method comprising applying the sheet product according to any one of the above to makeup cosmetics on the skin and wiping it off. <35> The aforementioned <1> ~ <31> Use of the sheet product according to any one of the above items as a skin cleansing sheet. <36> The aforementioned <1> ~ <31> Use of the sheet product according to any one of the above items as a makeup removal sheet.

[0048] <37> The following components (A), (B), and (C): (A) 0.5 to 9 mass% of a nonionic surfactant, (B) 0.05 to 3 mass% of an anionic surfactant having a Krafft point of 45°C or higher, calculated as a salt, (C) Water 70~99.45% by mass and (b) mixing the components (A) and (B) so that the ratio of the mass of the component (B) converted to a salt to the mass of the component (A) (B) / (A) is 0.03 to 1.0 to produce a liquid composition. The liquid composition is impregnated into a sheet containing 5% by mass or more of hydrophobic fibers. A method for manufacturing a skin cleansing sheet. [Example]

[0049] Examples 1 to 23, Comparative Examples 1 to 5 Liquid compositions having the compositions shown in Tables 1 to 4 were prepared, and the nonwoven fabric sheets shown in Table 5 were impregnated with the liquid compositions to produce skin cleansing sheets. The obtained skin cleansing sheets were evaluated for dirt (makeup) removal, redeposition inhibitory effect, and usability (skin feel, after-skin feeling (non-stickiness, non-residual feeling)). The results are shown in Tables 1 to 4. The density of the nonwoven fabric sheet was measured by the following method.

[0050] (Manufacturing method) (1) Preparation of liquid composition: The components (mass %) were mixed uniformly and heated to a temperature equal to or higher than the Krafft point of component (B) to prepare a liquid composition. (2) Manufacturing of skin cleansing sheets: A nonwoven fabric sheet previously cut to 16 cm x 20 cm was impregnated entirely with a specified amount of the liquid composition using a plastic dropper to obtain a skin cleansing sheet.

[0051] (Evaluation method) (1) Removes dirt (makeup): A certain amount of lipstick (Maybelline Color Sensational Lipstick (trademark) RD638, manufactured by Nihon L'Oréal) was applied to the inside of a person's lower arm, and the color difference was measured (E1). After that, the lipstick was wiped off a certain number of times (3 times) with a certain pressure using each skin cleansing sheet. The color difference was then measured again (E2). Using the measured color differences (E1, E2), the cleansing rate was calculated using the following formula and evaluated according to the following criteria. Cleaning rate (%)=(1-E2 / E1)×100 The color difference was measured using a Minolta color difference meter CR-300 (manufactured by Konica Minolta). 1: Cleaning rate less than 30%. 2: Cleaning rate is 30% or more but less than 40%. 3: Cleaning rate is 40% or more but less than 50%. 4: Cleaning rate is 50% or more but less than 60%. 5: Cleaning rate of 60% or more.

[0052] (2) Redeposition prevention effect: A 49mm x 130mm piece of artificial skin (Bioskin™, Beaulux, dry type) was applied with 10mg of liquid foundation (Sofina Primavista™ Pore & Uneven Skin Tone Cover c, Kao Corporation) and allowed to dry for at least one hour. The skin was wiped five times with a quartered skin cleansing sheet, and the wiped surface (wiping surface) was lightly touched to a clean paper cloth (Kimtowel™ White, Nippon Paper Crecia Co., Ltd.). The amount of foundation adhered to the cloth was considered to be readhesion, and the degree of readhesion was compared with the amount of foundation adhered to the wiping surface, and readhesion was evaluated visually according to the following criteria. A positive correlation was observed between the amount of foundation adhered to the cloth and the color of the liquid squeezed out from the skin cleansing sheet after wiping. The evaluation score is the average (rounded to the nearest whole number) of five expert panelists. 1: The foundation adheres to the cloth to the same extent as the wiping surface. 2: There is some foundation on the cloth, but the wiping surface is slightly more. 3: Foundation is stuck to the cloth, but more of it is on the wiping surface. 4: Foundation is stuck to the cloth, but it is noticeably more on the wiping surface. 5: There is almost no foundation on the cloth.

[0053] (3) Usability evaluation: The skin cleansing sheet, folded in four, was applied to the forearms of five expert panelists, all women in their 20s to 40s, and wiped five times in succession over a 10cm length with approximately 300g of force. Afterwards, a sensory evaluation was conducted on the following criteria for "skin feel," "after-skin (lack of stickiness)," and "after-skin (lack of residual feeling)." The evaluation values ​​are shown as the average values ​​(rounded to the nearest decimal place) of the five expert panelists.

[0054] (Skin contact) 1: It doesn't glide smoothly on the skin and feels hard against the skin. 2: It doesn't glide smoothly on the skin and feels a little hard against the skin. 3: Smooths smoothly on the skin and feels slightly soft on the skin. 4: It glides smoothly on the skin and feels soft on the skin. 5: It glides very smoothly on the skin and feels very soft on the skin.

[0055] (After-skin (non-sticky)) 1: It feels very sticky on the skin. 2: The skin feels slightly sticky. 3: The skin feels slightly sticky. 4: There is almost no stickiness on the skin. 5: It doesn't feel sticky at all on the skin and feels refreshing.

[0056] (After-skin (no residual feeling)) 1: There is a strong residual feeling on the skin. 2: There is a strong residual feeling on the skin. 3: There is some residual feeling on the skin. 4: There is almost no residue left on the skin. 5: No residue is felt on the skin at all, and it feels refreshing.

[0057] (4) Density of nonwoven fabric sheet: The density of the nonwoven fabric sheet was calculated by dividing the basis weight of the nonwoven fabric sheet by the thickness of the nonwoven fabric sheet. The thickness of the nonwoven fabric sheet was determined by measuring the thickness at any five points on the nonwoven fabric sheet using a constant pressure thickness measuring instrument (Model S-10908, manufactured by Teclock Corporation) in accordance with Method A of the "Thickness" test in the General Staple Fiber Nonwoven Fabric Testing Method (JIS L 1913), and taking the average value.

[0058] [Table 1]

[0059] [Table 2]

[0060] [Table 3]

[0061] [Table 4]

[0062] [Table 5]

[0063] Examples 24 to 29, Comparative Examples 6 to 7 In the same manner as in Examples 1 to 23, a nonwoven fabric sheet shown in Table 6 was impregnated with the liquid composition of Example 4 to produce a skin cleansing sheet. The obtained skin cleansing sheets were evaluated for their dirt (makeup) removal, redeposition inhibitory effect, and usability (skin feel) in the same manner as in Examples 1 to 23. Liquid release was also evaluated. The results are shown in Table 6.

[0064] (Evaluation method for liquid release) A 49mm x 130mm piece of artificial skin (Bioskin (trademark) dry type manufactured by Bealux) was wiped evenly (without overlapping wiping areas) in one direction with a skin cleansing sheet folded in four, with a specified load (300-400g). The amount of liquid adhering to the artificial skin was measured from the change in weight of the artificial skin before and after wiping. Evaluation was based on weight according to the following criteria. 1: The amount of liquid attached is less than 100 mg. 2: The amount of liquid attached is more than 100mg but less than 130mg. 3: The amount of liquid attached is 130 mg or more but less than 150 mg. 4: The amount of liquid attached is 150 mg or more but less than 180 mg. 5: The amount of liquid attached is 180 mg or more.

[0065] [Table 6]

[0066] Prescription example 1 In the same manner as in Examples 1 to 23, a nonwoven fabric sheet shown in Table 5 was impregnated with a liquid composition having the composition shown in Table 7 to produce a skin cleansing sheet. The obtained skin cleansing sheet can lift dirt such as makeup from the skin while preventing the dirt from re-adhering, exhibits high cleansing power, prevents stickiness and residual feeling on the skin after use, and feels good on the skin.

[0067] [Table 7]

Claims

1. A sheet having a mass ratio of hydrophobic fibers to hydrophilic fibers (hydrophobic fibers / hydrophilic fibers) of 5 / 95 to 70 / 30, The following components (A), (B), and (C): (A) 0.5 to 7.5 mass% of a nonionic surfactant, (B) an anionic surfactant having a Krafft point of 45° C. or higher at a concentration of 10% by mass in an aqueous solution (equivalent to a salt): 0.05 to 3% by mass, (C) Water 70-99.45% by mass The liquid composition is impregnated with a liquid composition containing the above-mentioned components, wherein the content of oily components (excluding component (A)) is 10 mass% or less, and the ratio (B) / (A) of the mass of component (B) converted to a salt to the mass of component (A) is 0.04 to 1.

0. Sheet products.

2. 2. The sheet product according to claim 1, wherein the content of component (B) in the liquid composition is 0.1 to 2.7% by mass in terms of salt.

3. 3. The sheet product according to claim 1, wherein in the liquid composition, the ratio (B) / (A) of the mass of component (B) converted to a salt to the mass of component (A) is 0.04 to 0.

6.

4. 3. The sheet product according to claim 1, wherein the liquid composition further comprises (D) a water-soluble polymer.

5. 5. The sheet product according to claim 4, wherein the water-soluble polymer of component (D) has an alkyl group having 3 or more carbon atoms.

6. 6. The sheet product according to claim 5, wherein the content of component (D) in the liquid composition is 0.01 to 0.3% by mass.

7. 3. The sheet product according to claim 1, wherein the mass ratio of the hydrophobic fibers to the hydrophilic fibers (hydrophobic fibers / hydrophilic fibers) in the sheet is 10 / 90 to 70 / 30.

8. The sheet has a density of 0.14 g / cm 3 3. The sheet product according to claim 1 or 2, wherein:

9. 3. The sheet product according to claim 1, wherein the liquid composition further comprises (E) a powder.

10. 3. The sheet product according to claim 1, wherein the sheet comprises a nonwoven fabric.

11. 3. The sheet product according to claim 1, which is for cleansing the skin.

12. 3. The sheet product according to claim 1, which is used to remove makeup cosmetics.

13. Component (A) is selected from the group consisting of sorbitan fatty acid esters, glycerin fatty acid esters, polyglycerin fatty acid esters, propylene glycol fatty acid esters, polyoxyethylene fatty acid esters, sucrose fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene alkyl ethers, polyoxyethylene sorbitol fatty acid esters, polyoxyethylene glycerin fatty acid esters, polyoxyethylene propylene glycol fatty acid esters, 3. The sheet product according to claim 1 or 2, wherein component (B) is one or more selected from polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polyoxyethylene hydrogenated castor oil fatty acid ester, alkyl polyglucoside, and polyoxyalkylene-modified silicone; and component (B) is one or more anionic surfactants selected from polyoxyalkylene alkyl (or alkenyl) ether sulfates, alkyl (or alkenyl) sulfates, alkyl sulfonates, ether carboxylates, amide ether carboxylates, higher fatty acid salts, alkyl phosphate ester salts, N-acylamino acid salts, acylated isethionates, acylated taurates, N-alkylamido alkanol sulfate ester salts, and polyoxyalkylene fatty acid amide ether sulfates, having a Krafft point of 45° C. or higher at a concentration of 10% by mass in an aqueous solution.

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