JPH05201829A - Production of convex-shaped solid powder cosmetic - Google Patents

Abstract

PURPOSE:To provide a method for producing the subject convex-shaped solid powder cosmetic capable of uniform use by using a prescribed cosmetic tool without partial hardening by shaping the surface of the solid powder cosmetic so as to have various kinds of three-dimensional shapes and making the hardness of the solid powder cosmetic uniform. CONSTITUTION:In production of the objective convex-shaped solid cosmetic, the objective convex-shaped solid powder cosmetic is produced by (A) a process in which a powder cosmetic is pressed by a press head having a concave shape deeper than the concave shape corresponding to the convex shape of the objective convex-shaped solid powder cosmetic and (B) the other process in which the cosmetic pressed by the above-mentioned (A) process is shaped by a press head having a concave shape corresponding to the convex shape of the objective convex-shaped solid powder cosmetic.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a convex solid powder cosmetic, and more specifically, the surface of solid powder cosmetics such as foundation, eye shadow and blusher is dome-shaped, hemispherical or conical. It can be molded into a wide variety of three-dimensional shapes such as pyramids, diamond-cuts, etc., and the hardness of the solid powder cosmetics is made uniform and even without partial curing with a prescribed makeup tool. The present invention relates to a method for producing a convex solid powder cosmetic that can be used for.

[0002]

2. Description of the Related Art Conventionally, as a method for molding a concave-convex solid powder cosmetic, a method of filtering and drying a slurry-like substance using a solvent, as described in JP-A-62-4218, Alternatively, as in Japanese Patent Laid-Open No. 61-176515, a method has been adopted in which the air contained in the powder cosmetic is degassed to prevent the surface from being unevenly worn (reduced) during use.

[0003]

However, Japanese Patent Laid-Open No. 62-
The method of filtering and drying a slurry-like material using a solvent like No. 4218 requires time for the drying step, and the molding apparatus is a large-scale machine equipped with a compressor, a slurry filling tank, etc. However, there is a drawback in that cleaning the device is inconvenient.

On the other hand, in the method of compression-molding while deaerating the air contained in the powdery cosmetic as in JP-A-61-176515, not only is the die-casting device complicated, but even if deaerating is completely completed. Even if it is done, the convex portion of the molded solid cosmetic has a small powder compression ratio, which reduces the powder density, and is easily worn during use, and the concave portion has a large powder compression ratio and thus the powder density. However, it was not possible to completely prevent uneven wear as a result. Therefore, the present invention has an object to provide a method for producing a convex solid powder cosmetic which has uniform hardness and can be used evenly without being partially hardened by a predetermined makeup tool. ..

[0005]

In order to achieve the above object, the inventors of the present invention have conducted diligent studies, and (A) a concave type deeper than a concave type corresponding to the convex surface of the intended convex solid powder cosmetic (B) a step of moving the powder cosmetic to the central convex portion by compressing the powder cosmetic with a press head having
Convex solid powder makeup consisting of two steps, a step of stamping the cosmetic material compressed in the above step (A) with a press head having a concave shape corresponding to the convex surface of the intended convex solid powder cosmetic material Has invented a method for producing food.

[0006]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 shows a state in which a powder cosmetic (a) is filled in a frame (2) provided with a saucer (1).

2 and 4 show a state in which the powder cosmetic (a) is compressed by a male mold (3a) having a deep concave press head to move the powder cosmetic to the central convex portion. ..
At this time, for the male die (3a) having a deep concave press head, in order to improve the degassing at the time of punching, as shown in FIG. It is preferable to provide pores (4). Furthermore, the release sheet (5) used here is preferably made of a stretchable material such as cloth because wrinkles are likely to occur at the time of compression punching when non-stretchable paper or the like is used.

FIG. 5 shows the first-stage solid powder cosmetic (a ') molded as shown in FIG.

FIG. 6 and FIG. 7 show the solid powder cosmetic (a ') in the first stage, and the male mold (3b) having a concave press head corresponding to the convex surface of the intended convex solid powder cosmetic. It shows the state of being stamped with. The release sheet (5 ') used at this time is also preferably made of a stretchable material such as cloth.

FIG. 8 shows a target convex solid powder cosmetic (b) molded according to FIG.

In order to prove the effect of the present invention, the solid cosmetic (b) molded by the production method of the present invention and the convex surface of the intended convex solid powder cosmetic directly after the powder cosmetic is filled. In the convex solid cosmetic (c) stamped with the male mold (3b) having the concave press head corresponding to, the difference in surface hardness between the central convex portion and the peripheral portion was measured three by three. The surface hardness of solid cosmetics is measured by a rheometer (RHEO TEX, manufactured by Sun Science Co., Ltd.), and the needle (1.0 m
mφ) is shown by the resistance value (g) of entering the die. That is,
The smaller the value, the softer the surface, and the larger the value, the harder the surface. The results are shown in Table 1.

[0012]

[Table 1]

As can be seen from Table 1, the solid cosmetic (b) molded by the manufacturing method of the present invention is a concave press which corresponds to the convex surface of the desired convex solid powder cosmetic after the powder cosmetic is filled. Compared to the convex solid cosmetic (c) directly stamped with a male mold (3b) having a head, the difference in surface hardness between the central convex portion and the peripheral portion was remarkably small, and it was used in a predetermined makeup tool. It could be used uniformly without being partially cured.

[0014]

As described above, according to the method for producing a convex solid powder cosmetic of the present invention, the surface of the solid powder cosmetic can be formed into various shapes such as dome shape, hemispherical shape, conical shape, pyramidal shape, and diamond cut shape. A convex solid powder that can be molded into a variety of three-dimensional shapes, and that can be used evenly without causing partial solidification of the solid powder cosmetics with a predetermined makeup tool. The body cosmetics are provided.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a state in which a frame is filled with powder cosmetics.

FIG. 2 is an explanatory view showing a state in which the powder cosmetics are compressed by the male mold in the first stage.

FIG. 3 is an explanatory view showing a state in which the powder cosmetics are compressed by a first-stage male mold different from FIG.

FIG. 4 is an explanatory view showing a state where the powder cosmetics are compression-molded in the first stage male mold.

FIG. 5 is an explanatory diagram of a solid powder cosmetic material after compression molding.

FIG. 6 is an explanatory view showing a state in which a solid powder cosmetic is stamped with a male mold in the second stage.

FIG. 7 is an explanatory view showing a state where a solid cosmetic material is stamped with a male mold in the second stage.

FIG. 8 is an explanatory diagram of a solid powder cosmetic material after die casting.

[Explanation of symbols]

 1 saucer 2 frame 3a male 3b male 4 deaeration hole 5 release sheet a cosmetics a'cosmetics b cosmetics

Claims (1)

[Claims] 1. When manufacturing a convex solid powder cosmetic, the powder cosmetic is compressed with a press head having a concave shape deeper than the concave shape corresponding to the convex surface of (A) the desired convex solid powder cosmetic. And the step of (B) pressing the cosmetic material compressed in the above step (A) with a press head having a concave shape corresponding to the convex surface of the intended convex solid powder cosmetic material. A method for producing a convex solid powder cosmetic, comprising forming a powder cosmetic.