JPS63139109A - Production of thin filmlike powdery cosmetic - Google Patents

Abstract

PURPOSE:To obtain the titled powdery cosmetic without irregular color and drying as well as cracking, by blending powder with an organic bentonite and/or ethyl cellulose and volatile solvent to form a slurry substance, spraying the resultant slurry into a thin film form on a board and drying the formed thin film. CONSTITUTION:Powder, e.g. extender pigment, organic coloring matter, inorganic pigment, metallic soap, pearling agent, mica, etc., is blended with an organic bentonite, e.g. stearyldimethylbenzylammonium hectorite, etc., as a binder and/or ethyl cellulose and a volatile solvent, e.g. trichlorotrifluoroethane, etc., to provide a slurry substance, which is the sprayed into a thin film form on a board, e.g. pulp paper, sheet made of a synthetic resin, etc.) and then dried to adhere the thin filmlike cosmetic to the board and afford the aimed thin filmlike powdery cosmetic.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for producing a thin film powder cosmetic suitable for use in small quantities.

(Conventional technology) Conventionally, for example, lipstick, eye shadow, foundation,
BACKGROUND OF THE INVENTION In order to provide oily powder cosmetics such as blushers for use in small quantities such as sample use, portable use, or disposable use, small cosmetic containers are often filled. Methods for filling powder cosmetics into small containers include a molding method in which powder cosmetics are filled into small whole blood containers and solidified by compression molding using a molding machine; A pouring method is used in which body cosmetics and a volatile solvent are mixed to form a slurry, poured into a container, and solidified by volatilizing the volatile solvent.

[Problem that the invention seeks to solve]

However, among the above-mentioned conventional techniques, the molding method has the disadvantage that the powder cosmetic may crack due to vibrations during transportation because the whole blood is small and cannot apply sufficient compressive force. Since a certain amount of powder cosmetic is required for compression molding, an unnecessary amount must be molded for applications where a small amount is used, leading to the problem of waste.

In addition, the pouring method has the advantage of being easy to fill into small containers, but the mixed state of the powder cosmetic and solvent may cause uneven coloring or uneven drying on the surface of the cosmetic. It has the disadvantage of cracking due to its weak impact resistance.

Therefore, among the above conventional techniques, as a method to solve the first drawback of the weak impact resistance when molding by the casting method, powder cosmetics have been developed as shown in Japanese Patent Application Laid-Open No. 60-243006. There is a known method for producing powder cosmetics in which organic bentonite is added as a binder to a volatile solvent and mixed, and the resulting slurry is filled or dropped into a container, molded, and dried. . Since organic bentonite is used in the powder cosmetic obtained by this production method, a certain level of impact resistance can be obtained when it is dried after being poured into a container or the like by filling or dropping. However, since this manufacturing method also uses the method of pouring into the container,
Similar to the prior art, the problem of uneven coloring and uneven drying remains unsolved.

In addition, in order to form products using this manufacturing method to a predetermined thickness, for example, if the coating is applied or dripped onto a flexible backing paper and dried, the coating becomes thick and prone to cracking. Another problem is that it cannot be molded to a uniform thickness.

The present invention has been made in view of the above-mentioned drawbacks of the prior art.The present invention is directed to the production of a thin film-like powder cosmetic that does not cause uneven coloring, uneven drying, or cracks, and can be suitably used for applications in which a small amount is used. The present invention provides a method.

(Means for solving the problems) The means adopted by the invention to solve the above-mentioned problems is to create a slurry by mixing powder, organic bentonite and/or chlorine, chill cellulose, and a volatile solvent. The present invention is characterized in that the slurry-like material is sprayed onto a mount paper in the form of a thin film and then dried, thereby fixing the thin film-like powder cosmetic onto the mount paper.

[Detailed description of the invention]

Powders used in the present invention include extender pigments, organic pigments, inorganic pigments, metal soaps, bur agents, mica, and the like, which have been conventionally used as materials for makeup cosmetics.

The organic bentonite used in the present invention has a function as a binder for the powder, and improves the impact resistance and breakage resistance of the powder cosmetic solidified into a thin film. As organic bentonite,
Examples include stearyl dimethyl hensyl ammonium hectorite, dimethyl dihytrodienetate tallow ammonium hectorite (trade name: "Henton 38", manufactured by National REIT Co., Ltd., USA).

Furthermore, ethyl cellulose can be used in combination with or selectively with organic bentonite. When using organic bentonite and ethyl cellulose together, the blending ratio is 20:
The range of 1 to 1.l is appropriate.

The mixing ratio of the above-mentioned organic bentonite and/or ethyl cellulose and the powder is 1.0:99.0-20.
A range of 0:80.0 is suitable in terms of adhesion and impact resistance.

The volatile solvent used in the present invention has a boiling point of 200°C or less, or has a boiling point of 30 to 100°C that can be vaporized at room temperature.
It is preferable that the temperature is around ℃. Volatile solvents include trichlorotrifluoroethane (Fronshowa 113J, manufactured by Showa Denko K.K.), ethanol, acetone, and low-boiling hydrocarbons (Isopar AJ, manufactured by Panflu Oil Ant Refining Company, USA). .The amount of volatile solvent used is appropriate for the powder and organic bentonite.

The present invention includes the above-mentioned powder, organic bentonite and/or ethyl cellulose, and a volatile solvent as essential components,
Preferably, the powder is further removed.

1.0 to 20.0% by weight of crystalline cellulose, 0.5% by weight of organic bentonite for volatile solvents, and 0.5% propylene carbonate as an ethylcellulose swelling promoter to improve the
~5.0% by weight may be added and mixed instead of powder.

Furthermore, as the mount used in the present invention, a synthetic resin sheet can be used in addition to pulp paper. The hardness of the mount is not particularly limited, and the mount may be as soft as parchment paper.

The molding process according to the present invention is as follows.

Mix and stir [■]. On the other hand, organic bentonite and/or
Alternatively, add a volatile solvent to ethyl cellulose and mix and stir using a mixer in the same manner (■). After that, the products obtained in each mixing and stirring process (■) and (2) are mixed and stirred with a mixer, and the slurry is mixed and stirred [■]. Next, the slurry-like material is sprayed onto a mount using a sprayer to form a thin film of a predetermined thickness, for example, about 0.11 mm (2), and dried by means such as natural drying, hot air, lamp irradiation, etc. It sticks to the surface (■).

The molding process of the present invention is the same as that of soft clay, but in the present invention, powder cosmetics of different colors are sprayed in a thin film form on a sheet of paper at predetermined intervals, and dried to form a thin film of multiple colors. A powder cosmetic may be fixed thereon.

〔Example〕

The present invention will be explained in detail below.

(Example 1) Eye shadow ■ Colored pigment 23.0 parts by weight ■ Mica
23.3 ■ Titanium mica (pearl agent) 45.0 ■ Zinc stearate 3.
7■Liquid paraffin 5.0■Crystalline cellulose 1.0■Ethyl cellulose
0.6■ Dimethyl dihyde dienetade tallow ammonium hectorite 1.0 0 trichlorotrifluoroethane 500.0 Add a part of the volatile solvent (■) to each of the components (■) to (■) above and mix with a homomixer. Stir to form a dispersion. on the other hand,
Add the remainder of the volatile solvent (2) to each of the ingredients (2) to (2) and the oil (2), and mix and stir with a mixer. Then, the dispersion liquid is added thereto and stirred with a mixer to produce a slurry.

Next, as shown in the figure, place the mount 2 on the base 1,
A paper pattern 3 in which a cutout portion 3A of a desired shape is formed is placed above the mount 2. Thereafter, the slurry-like material is sprayed onto the mount 2 using a pneumatic sprayer 4 installed above the base 1 to form a thin film with a thickness of 0.1 mm on the mount 2. The thin film dries naturally in about 3 seconds after the spraying ends, and the thin film of eye shadow 5 can be fixed on the mount 2.

In this embodiment, by adjusting the discharge amount or spraying time of the pneumatic sprayer 4, it is possible to form a thin film eyeshadow 5 of any thickness. In addition, the thickness of the eye shadow 5 formed on the flexible mount 2 such as parchment paper is limited to 0.1 mm, and if it is formed to a thickness exceeding 0.1 mm, cracks will occur. Easy to do. Furthermore, in this embodiment, the thin film eyeshadow 5 is fixed to a part of the upper surface of the mount 2 using the paper pattern 3, but a slurry-like substance is sprayed onto the entire upper surface of a large mount and allowed to dry. After forming a thin film-like eye shadow, the thin film-like eye shadow may be cut into a predetermined shape together with the mount.

[Example 2] Blush ■ Colored pigment 12.3 parts by weight ■ Mica
40.0 ■ Talc
19.5■ Mica titanium (pearl agent) 20
．． 0 ■ Zinc stearate 2.0 ■ Squalane 6.0 ■ Fragrance
0.2 ■ Ethyl cellulose 1.5 ■
Stearyldimethylbenzi to ammonium hectorite 1.5 [Phase] Ethyl alcohol 350.0 Through the same process as in Example 1, 0.05 g of a thin film-like blusher was obtained per mount.

(Example 3) White paper powder ■ Colored pigment 4.0 parts by weight ■ Titanium dioxide 5.0 ■ Mica
25.0 ■ Talc 65.
7 ■Fragrance 0.3 ■ Ethyl cellulose 2.5 ■ Trichlorotrifluoroethane soo.

Through the same steps as in Example 1, 0.1 g of white paper powder was obtained per sheet of paper.

(Effects of the Invention) Since the present invention is configured as detailed above, it has the following effects.

■ Eliminates the need for the compression die process in conventional technology;
Since the drying process time can also be shortened, the manufacturing process can be simplified and manufacturing efficiency can be improved.

■ The slurry was sprayed onto the mount, so
It can prevent uneven coloring, and since it dries in an extremely short time, it can prevent uneven drying.

■ Powder cosmetics for sample use, portable use, disposable use, etc. that can be used in small quantities, such as once or twice, because a very small amount of powder cosmetics can be formed into a thin film on the mount. can be manufactured.

■ Powder cosmetics can be formed into a thin film on the mount, which prevents the powder cosmetics from cracking even when the mount is folded.
This makes it possible to maintain the quality of products or send free samples by mail.

[Brief explanation of the drawing]

The figure is an explanatory view showing a spraying step of a manufacturing method according to an embodiment of the present invention. 1... Base, 2... Mount, 3... Pattern, 4...
Spray record, 5...Powder cosmetics.

Claims (1)

[Claims] Powder, organic bentonite and/or ethyl cellulose, and a volatile solvent are mixed to form a slurry, and the slurry is sprayed onto a mount in the form of a thin film, and then dried to form a thin film on the mount. A method for producing a thin film powder cosmetic in which the powder cosmetic is fixed.