JP2013121922A - Sheet-like cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet-like cosmetic in which a liquid composition containing powder is impregnated in a sheet-like base and which can impart a long-lasting silky feeling, does not leave a white residue, and is easy to wipe out.SOLUTION: The sheet-like cosmetic includes the sheet-like base comprising hydrophilic fibers and hydrophobic fibers and the liquid composition impregnated in the sheet-like base, wherein the liquid composition comprises (A) hydrophilic powder, (B) dimethylpolysiloxane having a kinematic viscosity of 5 to 30 mm/s at 25°C and (C) a nonionic surfactant, the ratio (A)/(B) of the content of the component (A) to the content of the component (B) is 10 to 25 by mass, and the content of the component (C) is 0.01 to 0.1 mass%.

Description

  The present invention relates to a sheet-like cosmetic.

  Conventionally, sheet-like cosmetics for removing sweat, sebum, makeup stains, and the like and for wiping the body have been proposed. It has been proposed that this sheet-like cosmetic is blended with powder in order to impart a smooth feeling. However, although a smooth feeling can be imparted by blending the powder, there has been a problem that the sustainability of the smooth feeling is insufficient and white residue is generated. Furthermore, the sheet-like cosmetic material has been required to be easily wiped off without being swung.

JP 2002-201109 A JP 2000-256164 A JP 2006-149444 A JP 2008-169180 A

  The present invention has been made in view of the above circumstances, and is a sheet-like cosmetic in which a sheet-like base material is impregnated with a liquid composition containing a powder, which imparts a feeling of smoothness and maintains the feeling of smoothness. An object of the present invention is to provide a sheet-like cosmetic material in which white residue is suppressed and easy to wipe off.

As a result of intensive studies to achieve the above object, the present inventors have found that in a sheet-like cosmetic in which a liquid composition containing powder is impregnated into a sheet-like substrate, the sheet-like substrate is treated with hydrophilic fibers and hydrophobic. And a liquid composition comprising (A) hydrophilic powder, (B) dimethylpolysiloxane having a kinematic viscosity of 5 to 30 mm ² / s at 25 ° C., and (C) nonion It is found that the above-mentioned problems can be solved by making the specific mass of the component (A) and the component (B) and the blending amount of the component (C) into the specific range. It has been reached.

Therefore, this invention provides the following sheet-like cosmetics.
[1]. A sheet-like cosmetic comprising a sheet-like base material comprising a hydrophilic fiber and a hydrophobic fiber, and a liquid composition impregnated in the sheet-like base material, wherein the liquid composition is (A) a hydrophilic powder. Body, (B) a dimethylpolysiloxane having a kinematic viscosity at 25 ° C. of 5 to 30 mm ² / s, and (C) a nonionic surfactant, and a contained mass ratio of (A) component and (B) component ( A) / (B) is 10-25, and the content of (C) component is 0.01-0.1 mass%.
[2]. The sheet-like cosmetic according to [1], wherein the sheet-like base material comprises a core-sheath type composite fiber.
[3]. The component (C) is a nonionic surfactant selected from polyoxyethylene (60) hydrogenated castor oil, polyoxyethylene (40) hydrogenated castor oil, and PEG-20 glyceryl isostearate [1] or [2] The sheet-like cosmetic as described.
[4]. (A) The sheet-like cosmetic according to any one of [1] to [3], wherein the hydrophilic powder is silica.
[5]. Furthermore, (D) sheet-like cosmetics in any one of [1]-[4] containing a polyhydric alcohol.

  According to the present invention, it is a sheet-like cosmetic material in which a liquid composition containing powder is impregnated into a sheet-like base material, which imparts a smooth feeling, and the smooth feeling is maintained and white residue is suppressed, It is possible to provide a sheet-shaped cosmetic that is easy to wipe off.

Hereinafter, the present invention will be described in detail.
The present invention is a sheet-like cosmetic comprising a sheet-like base material comprising hydrophilic fibers and hydrophobic fibers, and a liquid composition impregnated in the sheet-like base material, wherein the liquid composition is (A A) hydrophilic powder, (B) a dimethylpolysiloxane having a kinematic viscosity of 5-30 mm ² / s at 25 ° C., and (C) a nonionic surfactant, and comprising (A) component and (B) component It is a sheet-form cosmetic whose content mass ratio (A) / (B) is 10 to 25 and whose content of the component (C) is 0.01 to 0.1% by mass.

[I]. Liquid Composition (A) Hydrophilic Powder In the present invention, “hydrophilic powder” means “dispersed in an aqueous phase when 1 g of powder is added to 10 g of hexane / 10 g of water and dispersed with ultrasound. Powder ". Examples of such powders include talc, mica, cellulose, silk, hydroxyapatite, silica, and the like, which can be used singly or in appropriate combination of two or more. Among these, silica is preferable from the viewpoint of smooth feeling.

  In particular, the mass ratio of spherical silica / non-spherical silica is preferably from 0.1 to 1.5, and more preferably from 0.2 to 0.7, from the viewpoint of durability of the smooth feeling and lack of white residue. If this ratio is less than 0.1, the feeling of smoothness may decrease, and if it exceeds 1.5, white residue may occur. This number is rounded off to the first decimal place.

  Specifically, spherical silica and non-spherical silica are classified into spherical silica (average circularity of 0.8 or more) and all non-spherical silica that are not included in this. In addition, the measuring method of the measuring method of average circularity is as follows.

<Measuring method of average circularity>
Based on a scanning electron micrograph of powder particles, image processing (binarization processing) using a circularity measuring device (main body: manufactured by Shimadzu Corporation, image analysis software: Win ROOF, manufactured by Mitani Corporation) ), The circularity is calculated by measuring the area and perimeter of the powder particles in the processed image, and the average of the circularity of each powder particle can be obtained. The circularity is expressed by the following formula, and the closer the circularity is to 1, the closer to a perfect circle. In addition, when multiple particles are overlapped, only aggregated particles are recognized because they recognize the aggregate as one without recognizing them individually, or the shaded particles do not recognize the shadow part. Measure as particles.
[Formula] Circularity = 4π × area of silica particles in binarized image / (peripheral length of silica particles in binarized image) ²

  Specifically, as spherical silica, AGC S-Tech Co., Ltd. Sunsphere H-121 (degree of circularity: 0.8), Sunsphere H-122, Sunsphere H-201, Sunsphere NP-30, Suzuki Examples include oil-based God Ball B-6C (circularity: 0.9), God Ball E-16C (circularity: 0.9 or more), and Sunsphere H-121 is preferable. Examples of the non-spherical silica include Silicia 730, Silicia 550 manufactured by Fuji Silysia Co., Ltd., and Silicia 730 is preferable.

  The content of the component (A) is preferably from 1 to 5% by mass, more preferably from 2 to 4% by mass in the liquid composition from the viewpoint of smooth feeling, its durability, and no white residue. If the content is less than 1% by mass, the feeling of smoothness and the sustainability thereof may be reduced, and if it exceeds 5% by mass, white residue may be generated.

(B) high dimethylpolysiloxane, i.e. slippage of a dimethylpolysiloxane (B) 25 ° C. kinematic viscosity 5 to 30 mm ² / s is a 25 ° C. kinematic viscosity 5 to 30 mm ² / s, the low viscosity dimethylpolysiloxane By blending siloxane, the feeling of smoothness, its durability, and the lack of white residue are improved. This is because (B) dimethylpolysiloxane is adsorbed on the surface of (A) hydrophilic powder, so that (A) hydrophilic powder spreads on the skin and the refractive index of light changes. However, it is expected that (A) the hydrophilic powder does not appear white easily. Among them, dimethylpolysiloxane having a kinematic viscosity at 25 ° C. of 5 to 10 mm ² / s is preferable. If the dimethylpolysiloxane has a kinematic viscosity at 25 ° C. of less than 5 mm ² / s, the durability of the smooth feeling is lowered. If the dimethyl polysiloxane exceeds 30 mm ² / s, the durability of the smooth feeling is lowered.

Specifically, as the component (B), Shin-Etsu Chemical Co., Ltd .: KF96A-5cs (kinematic viscosity 25 ° C., 5.0 mm ² / s), KF96A-6cs (kinematic viscosity 25 ° C., 6.0 mm ² / s) ), KF-96-10cs (kinematic viscosity ^{25 ℃, 10mm 2 / s)} , KF-96-20cs ( kinematic viscosity ^{25 ℃, 20mm 2 / s)} , KF-96-30cs ( kinematic viscosity 25 ℃, 30mm ² / s), manufactured by Toray Dow Corning Co., Ltd .: SH200 C Fluid 5cs (dynamic viscosity 25 ° C., 5.0 mm ² / s), SH200 C Fluid 6 cs (dynamic viscosity 25 ° C., 6 mm ² / s), SH200 C Fluid 10 cs (Kinematic viscosity 25 ° C., 10 mm ² / s), SH200 C Fluid 20 cs (dynamic viscosity 25 ° C., 20 mm ² / s), SH200 C Fluid 30 cs (dynamic viscosity 25 ° C., 30 mm) ² / s), preferably KF96A-6cs (dynamic viscosity 25 ° C., 6.0 mm ² / s), KF-96-10 cs (dynamic viscosity 25 ° C., 10 mm ² / s), SH200 C Fluid 6cs (dynamic) Viscosity 25 ° C., 6 mm ² / s), SH200 C Fluid 10 cs (dynamic viscosity 25 ° C., 10 mm ² / s). Kinematic viscosity measurement method: Measured with a Ubbelohde viscometer according to ASTM D 445-46T.

  The content of the component (B) is preferably 0.01 to 0.4% by mass and more preferably 0.1 to 0.3% by mass in the liquid composition from the viewpoint of smooth feeling and sustainability. If the content is less than 0.01% by mass, the feeling of smoothness and its sustainability and the remaining whiteness may be reduced. If the content exceeds 0.4% by mass, stickiness occurs and the feeling of smoothness is reduced. There is a risk.

  The mass ratio (A) / (B) of the component (A) and the component (B) is 10 to 25, and preferably 15 to 20. When this mass ratio is less than 10, stickiness is generated, and the smooth feeling and its sustainability are lowered. On the other hand, if it exceeds 25, the sustainability of the smooth feeling is lowered, and the occurrence of white residue is insufficiently suppressed. Note that (A) / (B) is a value obtained by rounding off the first decimal place.

(C) Nonionic surfactant (C) By mix | blending (C) component, while a smooth feeling and its sustainability improve more, aggregation of (A) component is suppressed and dispersion stability is improved. (C) A component can be used individually by 1 type or in combination of 2 or more types as appropriate. For example, a multi-chain nonionic surfactant of HLB 11 to 16 is preferable, and a multi-chain nonionic surfactant of HLB 12 to 15 is more preferable from the viewpoint of smooth feeling.

  Specifically, Nippon Emulsion Co., Ltd .: polyoxyethylene (average number of moles added 30) hydrogenated castor oil: HC-30 (HLB11), polyoxyethylene (40) hydrogenated castor oil: HC-40 (HLB12), Polyoxyethylene (50) hydrogenated castor oil: HC-50 (HLB13), polyoxyethylene (60) hydrogenated castor oil: HC-60 (HLB14), polyoxyethylene (100) hydrogenated castor oil: HC-100 (HLB15) , Polyoxyethylene (20) sorbitan cocoate: ET-2020 (HLB15), PEG-40 oleic acid: ET-8040 (HLB16), PEG-20 glyceryl isostearate: GWIS-120 (HLB13), PEG-30 glyceryl isostearate : GWIS-130 (HLB1 ), PEG-50 glyceryl isostearate: GWIS-150 (HLB16), PEG-50 glyceryl triisostearate: GWIS-350 (HLB12), PEG-50 hydrogenated castor oil: RWL-150 (HLB12), isostearic acid PEG-50 hydrogenated castor oil: RWIS-150 (HLB12) and the like. Among them, PEG-20 glyceryl isostearate: GWIS-120 (HLB13), polyoxyethylene (40) hydrogenated castor oil: HC-40 (HLB12), polyoxyethylene (50) cured from the point of smooth feeling and its durability Castor oil: HC-50 (HLB13), polyoxyethylene (60) hydrogenated castor oil: HC-60 (HLB14), polyoxyethylene (100) hydrogenated castor oil: HC-100 (HLB15) is preferred, and polyoxyethylene ( 40) hydrogenated castor oil: HC-40 (HLB12), polyoxyethylene (50) hydrogenated castor oil: HC-50 (HLB13), polyoxyethylene (60) hydrogenated castor oil: HC-60 (HLB14), polyoxyethylene (100) Hardened castor oil: HC-100 (HLB15) is more preferred Arbitrariness.

In addition, HLB is shown by IOB * 10 in an organic conceptual diagram. The IOB in the organic conceptual diagram refers to the ratio of the inorganic value (IV) to the organic value (OV) in the organic conceptual diagram, that is, “inorganic value (IV) / organic value (OV)”. The organic conceptual diagram was proposed by Satoshi Fujita, and details thereof are described in “Pharmaceutical Bulletin”, 1954, vol. 2,2, pp. 163-173, “Area of Chemistry”, 1957, vol. 11, 10, pp. 719-725, "Fragrance Journal", 1981, vol. 50, pp. 79-82 and the like. That is, methane (CH ₄ ) is assumed as the root of all organic compounds, and all other compounds are regarded as derivatives of methane, and certain numbers are set for the carbon number, substituent, transformation part, ring, etc. Add scores to determine organic and inorganic values. This value is plotted on a diagram with the organic value on the X axis and the inorganic value on the Y axis. This organic conceptual diagram is also shown in “Organic Conceptual Diagram-Basics and Applications” (by Yoshio Koda, Sankyo Publishing, 1984).

  The content of the component (C) is such that the content of (C) in the liquid composition is 0.01 to 0.1% by mass and 0.05 to 0.08% by mass from the viewpoint of smooth feeling and sustainability. % Is more preferable. If the content is less than 0.01% by mass, the powder dispersibility of the component (A) is poor and agglomeration occurs. In addition, stickiness may occur and the feeling of smoothness and its sustainability may be reduced.

(D) Polyhydric alcohol It is good to mix | blend a polyhydric alcohol with the liquid composition of this invention from the point which improves the non-white residue. Examples of the component (D) include propylene glycol (PG), dipropylene glycol (DPG), 1,3-butylene glycol (1,3-BG), polyethylene glycol (PEG), and glycerin. From the point of absence, 1,3-butylene glycol is preferred.

  The content of the component (D) is preferably 0.1 to 1.0% by mass, and preferably 0.3 to 0.6% by mass in the liquid composition from the viewpoint of a smooth feeling, its sustainability, and no white residue. Is more preferable. By setting the content to be 0.1% by mass or more, generation of white residue can be further suppressed. When it exceeds 1.0 mass%, there exists a possibility that a smooth feeling may fall.

  In addition to the above components, the liquid composition of the present invention includes, for example, fats and oils, waxes, silicones other than component (B), hydrocarbon oils, higher fatty acids, higher alcohols, synthetic ester oils, and component (C) Other surfactants, polymer compounds, antioxidants, dyes, fragrances, emulsion stabilizers, pH adjusters, astringents, preservatives, ultraviolet absorbers, chelating agents, moisturizers, thickeners, l-menthol, etc. These include, but are not limited to, fresheners, anti-inflammatory agents, amino acids, vitamins, various plant extracts, bactericides, antiperspirants and the like.

  The liquid composition of the present invention can be produced, for example, by mixing the above components, optional components, ethanol and water (remainder). For example, the ethanol content is about 15 to 60% by mass in the liquid composition, and preferably 20 to 40% by mass. The content of water is about 55 to 75% by mass in the body composition, and preferably 60 to 70% by mass.

[II] Sheet-like base material A sheet-like base material consists of a hydrophilic fiber and a hydrophobic fiber. Examples of the hydrophilic fiber include cotton, pulp, hemp, rayon and the like, and rayon is preferable from the viewpoint of easy wiping of the skin. Examples of hydrophobic fibers include polyolefin fibers such as polyethylene (PE) and polypropylene (PP), polyester fibers such as polyethylene terephthalate, polyamide fibers such as nylon, polyacrylonitrile fibers, polyvinyl alcohol fibers, or these fibers. And the like. These can be used individually by 1 type or in combination of 2 or more types.

  The ratio (mass) of the hydrophilic fiber / hydrophobic fiber is preferably 50/50 to 90/10, more preferably 71/29 to 75/25, from the viewpoint of smooth feeling, durability thereof, and ease of wiping. If the ratio is less than 50/50, the sustainability of the smoothness may be deteriorated, and if it exceeds 90/10, the smoothness and ease of wiping may be deteriorated.

  Sheet-like base materials, particularly hydrophobic fibers, include core-sheath type fibers or side-by-side type fiber composite fibers, but from the viewpoint of ease of wiping the skin, from core-sheath type composite fibers. Preferably, PE / PP core-sheath fiber is preferable. The PE / PP core-sheath fiber has a structure in which the surface of the PP fiber is coated with PE having a melting point lower than that of PP.

  The structure of the sheet-like base material is not particularly limited, but from the viewpoint of smooth feeling, no wrinkling, and easy wiping, a laminated structure in which the core-sheath type composite fiber, preferably PE / PP core-sheath fiber is sandwiched with rayon is used. A sheet-like substrate is particularly preferable. As this production method, for example, PE / PP core-sheath fiber (NBF-H) is formed into a sheet (nonwoven fabric) by heat fusion, the sheet is sandwiched between rayon webs, and the fibers are entangled with a water jet. be able to.

The thickness of the sheet-like substrate is preferably from 0.01 to 5 mm, more preferably from 0.05 to 1 mm, from the viewpoint of easy wiping. If the thickness is less than 0.01 mm, kinking occurs and it is easy to wipe off, but there is a risk that it will decrease, and if it exceeds 5 mm, the amount of liquid composition that migrates to the skin is small, and the smooth feeling may decrease. The thickness is measured with a load of 8 g / cm ² .

The basis weight (per layer) is preferably 10 to 100 g / m ^{2 and} more preferably ²⁰ to 80 g / m ² from the viewpoint of easy wiping. If the basis weight is less than 10 g / m ² , twisting may occur and the ease of wiping may be reduced. If the basis weight is more than 100 g / m ² , the amount of liquid composition transferred to the skin is small and the dry feeling may be reduced. There is.

[III]. Sheet-like cosmetic The sheet-like cosmetic can be obtained by impregnating the liquid composition into the sheet-like base material. The impregnation ratio (mass ratio) (liquid composition / sheet-like base material) is preferably 3 to 6, and preferably 3.5 to 4.5 in terms of a smooth feeling and easy wiping. The impregnation method is not particularly limited, and a known method such as a spray method, a dipping method, or a coating method can be employed for the liquid composition.

  The use of the sheet-shaped cosmetic material is not particularly limited as long as it wipes off the skin, but it can also be used for wiping skin sweat and dirt, cosmetics, etc., and can also be used as a deodorant sheet.

  EXAMPLES Hereinafter, although an Example and a comparative example are shown and this invention is demonstrated concretely, this invention is not restrict | limited to the following Example. In the following examples, unless otherwise specified, “%” in the composition indicates mass%, the ratio indicates the mass ratio, and the amount of each component in the table is an amount converted into a pure component.

[Examples 1 to 35, Comparative Examples 1 to 12]
After the liquid composition having the composition shown in Tables 1 to 8 is dispersed in the component (A) in the component (B), the dispersion is added to ethanol, and then the components having the composition shown in the table are sequentially added. Purified water was added to to obtain a liquid composition.
The prepared liquid composition is impregnated with 4 g of the liquid composition with respect to 1 g of the non-woven fabric described in the table of 10 cm × 15 cm ((liquid composition / sheet-like base material) = 4), and sheet-like makeup is made. I got a fee. The following evaluation was performed about the obtained liquid composition. The results are also shown in the table.

(1) Smooth feeling and persistence (after 30 minutes),
Twenty women in their 20s and 30s were asked to use the sheet-like cosmetics, and the “smooth feeling immediately after use and 30 minutes after use” was evaluated. The results are shown by the following criteria based on the number of respondents who answered that “the coated part has a smoother feeling than the non-coated part”.
<Standard>
◎: 18 or more respondents who answered “the coated part has a smoother feeling than the non-applied part” ○: 14 to 17 persons who answered that the “applied part had a smoother feeling than the non-coated part” Name △: 8 to 13 people who answered that “applied part is more smooth than uncoated part” ×: 8 people who answered that “applied part is more smooth than uncoated part” Less than one person

(2) Ease of wiping 20 female panelists in their 20s and 30s used a sheet-like cosmetic and evaluated the “easiness of wiping” when used on the skin. The results are shown by the following criteria according to the number of people who answered that “easy to wipe off”.
<Standard>
◎: 18 or more people who replied “Good wiping” ○: 14 to 17 people who replied “Good wiping” Δ: People who replied “Good wiping” However, 8-13 people ×: Less than 8 people answered that “easy to wipe off”

(3) No white residue 20 female panelists in their 20s and 30s used a sheet-like cosmetic, and evaluated “no white residue” after 30 minutes of use. The results are shown according to the following criteria, according to the number of people who answered “no white residue”.
<Standard>
◎: More than 18 people who answered “no white residue” ◎ to ○: those who answered “no white residue” 14 to 17 people ○: people who answered “no white residue” , 10 to 13 people Δ: 6 to 9 people who answered “no white residue” ×: less than 6 people who answered “no white residue”

The following nonwoven fabric was used.
(A) Rayon / PE / PP core-sheath fiber / rayon = (25 g / m ² ) / (20 g / m ² ) / (25 g / m ² ): (70 g / m ² )
(Hydrophilic fiber / hydrophobic fiber = 71/29) Thickness: 1 mm (Daiwabo Co., Ltd.)
(B) Rayon / PP / Rayon = (20 g / m ² ) / (30 g / m ² ) / (20 g / m ² ): (60 g / m ² )
(Hydrophilic fiber / hydrophobic fiber = 57/43) (Daiwabo Co., Ltd.)
(C) Rayon / PE / PET core-sheath fiber / rayon = (25 g / m ² ) / (20 g / m ² ) / (25 g / m ² ): (70 g / m ² )
(Hydrophilic fiber / hydrophobic fiber = 71/29) (manufactured by Daiwabo Co., Ltd.)
(D) Rayon / PE / PP core-sheath fiber / rayon = (30 g / m ² ) / (20 g / m ² ) / (30 g / m ² ): (80 g / m ² )
(Hydrophilic fiber / hydrophobic fiber = 75/25) (Daiwabo Co., Ltd.)
(E) Rayon: PE / PP core-sheath fiber = 90: 10: (65 g / m ² )
(Hydrophilic fiber / hydrophobic fiber = 90/10) (Daiwabo Co., Ltd.)
(F) 100% rayon spun lace nonwoven fabric: (70 g / m ² )
(100% by weight hydrophilic) (Daiwabo Co., Ltd.)
(A)-(d): The core-sheath fibers were obtained by heat-sealing into a sheet (nonwoven fabric), sandwiching the sheet with a rayon web, and entangled the fibers with a water jet.
(E): A web in which rayon and PE / PP core-sheath fibers were mixed at a ratio (mass%) of 90:10 was prepared, and the fibers were entangled with a water jet.
(F): A web-like rayon was obtained by entanglement of fibers with a water jet.

The raw materials used in Examples and Comparative Examples are shown below.

Claims (5)

A sheet-like cosmetic comprising a sheet-like base material comprising a hydrophilic fiber and a hydrophobic fiber, and a liquid composition impregnated in the sheet-like base material, wherein the liquid composition is (A) a hydrophilic powder. Body, (B) a dimethylpolysiloxane having a kinematic viscosity at 25 ° C. of 5 to 30 mm ² / s, and (C) a nonionic surfactant, and a contained mass ratio of (A) component and (B) component ( A) / (B) is 10-25, and the content of (C) component is 0.01-0.1 mass%.   The sheet-like cosmetic according to claim 1, wherein the sheet-like base material comprises a core-sheath type composite fiber.   The component (C) is a nonionic surfactant selected from polyoxyethylene (60) hydrogenated castor oil, polyoxyethylene (40) hydrogenated castor oil, and PEG-20 glyceryl isostearate. Sheet cosmetic.   (A) The sheet-like cosmetic according to any one of claims 1 to 3, wherein the hydrophilic powder is silica.   Furthermore, (D) sheet-like cosmetics of any one of Claims 1-4 containing a polyhydric alcohol.