JPH0798734B2 - Powder cosmetic filling method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a method for filling powdery cosmetics, more specifically, a thin type,
Particularly, the present invention relates to a method for filling powdery cosmetics which is advantageous for filling a container having a wide opening area.

[Prior Art] Solid make-up cosmetics mainly comprise cosmetic powder and an oil agent, and the composition of these components can be changed according to the purpose of makeup.

Conventionally, as a filling molding method of such a solid make-up cosmetic, when the oil content is relatively small (5% in the composition)
~ 25%), a press molding method in which the contents are filled in a container such as a dish in the container and then compressed and solidified; if the oil content is high (50% or more in the composition), heat the contents. Melt,
The pouring melt filling molding method of pouring into a container such as a dish in a container for filling and solidifying has been generally performed. Further, in recent years, in solid powder make-up cosmetics having a relatively low oil content, a cosmetic base material is mixed with a low-boiling organic solvent to form a slurry, and the solvent is filled in a container such as an intermediate dish. Solvent method for solidifying by drying or absorption removal has come to be performed (Japanese Patent Laid-Open No. 56-108703, Japanese Patent Publication No. 57-6000).
No. 4).

[Problems to be solved by the invention]

In general, solid powder make-up cosmetics have poor fluidity and strong adhesiveness due to a relatively small amount of oil formulation, and as a result, in the above press molding method, it is difficult to evenly fill a container or the like evenly. The impact resistance is poor because the density of the contents after compression molding is uneven, and it is very difficult to fill and mold a thin container having a wide frontage area.

On the other hand, the solvent method is an advantageous method as compared with the above-mentioned press molding method in that the contents can be uniformly filled, but the loss of the contents due to the dry removal of the solvent and the contraction due to the agglomeration of the contents during drying are caused. There were problems such as cracks and cracks.

Further, in such a solvent method, if the solvent is replaced by a drying means and is removed by an instant absorbing means, the above-mentioned loss or the like can be prevented to a considerable extent, but the solvent is immediately injected from the portion in contact with the absorber after injection. As a result of the absorption, the viscosity of the content in the absorbed portion increases, and the content becomes immobile, so that it is difficult to fill the content in every corner of the container.
In particular, such a drawback is remarkable in the case of filling and molding into a thin container having a large opening area, and in the case of this kind, it has not been possible to obtain a sufficiently satisfactory powdered cosmetic in a container.

Under the circumstances, the present inventor has completed various studies as a result of various studies to provide a method capable of filling powder cosmetics extremely thinly into a container having a particularly large opening area. It was done.

[Means for solving problems]

That is, according to the present invention, after closing the opening of the cosmetic filling container having the cosmetic injection hole in the container wall by facing the concave surface of the concave base body, the powder cosmetic base material dissolved in the solvent is pressed through the injection hole. Injecting, then removing the concave substrate, after the primary drying, press the convex injection molding substrate surface to be the same horizontal plane as the container opening edge, then secondary drying,
It is a method for filling powdery cosmetics, which is characterized by solidifying.

The present invention will be described below with reference to the drawings showing examples of filling steps.

In the present invention, the cosmetic filling container 1 may be a compact body itself or a medium plate such as a gold plate.

The cosmetic filling container 1 has a cosmetic injection hole 3 in a container wall 2. Here, the vessel wall 2 may be the bottom wall portion 21 or the side wall portion 22.

According to the present invention, first, the opening of the cosmetic filling container 1 is opposedly closed by the concave surface portion 41 of the concave base body 4. The concave base body 4 is for molding the surface of the injected powder cosmetics base material into a convex shape, and the specific shape of the concave surface portion 41 is preferably a gentle hemispherical shape.

The volume of the concave portion 41 is basically calculated by the following formula. However, this is the numerical value when the solvent is completely dried and pressed after the injection, and in the present invention, the pressing is performed when the solvent is not completely dried after the injection, so the actually calculated numerical value is obtained. It gets smaller.

X: Volume of concave portion (cm ³ ) S: Content of solvent (%) W: Volume of container (cm ³ ) a: Specific gravity of cosmetic base (g / cm ³ ) a ′: Specific gravity of solvent (g / cm ³ ) At the time of the above-mentioned opposite closing, an air vent hole (not shown) is formed separately from the injection hole 3 at an appropriate place of the cosmetic filling container 1, or a release paper, a patterning sheet / mesh mesh is provided on the concave portion 41. It is advantageous to provide an air vent means by placing 5 or the like in order to obtain a uniform filling effect.

Next, the powder cosmetic base material 6 dissolved in the solvent is pressure-injected through the injection hole 3. Here, the solvent may be any volatile solvent that does not adversely affect the powder cosmetic, and a known solvent or the like can be appropriately selected and used. Further, the mixing ratio of the powder cosmetic and the solvent is different depending on the powder composition and the oil content in the powder cosmetic, or the amount of the solvent, but the powder cosmetic is usually
The range of 45 to 110 parts of solvent, especially 60 to 85 parts, relative to parts, is preferred. The pouring pressure varies depending on the consistency of the powdery cosmetic base material 6 and the like, but is usually 0.5 to 5 kg / cm ² .

Then, the concave substrate 4 is removed from the container 1. In this way, a container-containing base material having a convexly-projected surface is obtained. Then, most of the solvent contained in the substrate is first dried (for example, about 50 to 90%), and then the convex substrate surface is dried.
61 is pressed so that it is flush with the edge 11 of the container opening. The pressing here may be a pressing pressure capable of forming a horizontal surface, and is usually performed by the pressing pad 7 at a pressure of about 10 kg / cm ² . At this time, it is possible to press through a sheet for patterning, a mesh or the like.

After that, it is secondarily dried and solidified. In the present invention, the specific means for the primary and secondary drying may be any, but natural drying or warm air drying at a temperature that does not adversely affect the cosmetics is simple and effective.

〔The invention's effect〕

The powdered cosmetic material filled as described above has no loss of appearance, cracks, crevices, etc., and is therefore also excellent in impact resistance.

Furthermore, according to the method of the present invention, even in the case of a thin container, which has been difficult in the past, and particularly in the case of a container having a large opening area, the solvent is not removed at the time of filling, so that the absorbent body can be used like a continuous suction method. Therefore, since the solvent is removed and there is no difficulty in filling due to loss of fluidity, it is possible to fill evenly in every corner, so it is easy to manufacture so-called thin type cosmetics in containers with a thickness of 2 mm or less. Can be converted.

〔Example〕

 Next, the method of the present invention will be further described with reference to examples.

Example 1 Ingredient (Ashidaw) (parts by weight) (1) Mica 77.0 (2) Organic pigment 1.0 (3) Inorganic pigment 4.0 (4) Mica titanium 5.0 (5) Inorganic silicic acid 3.0 (6) Dimethyl silicone oil 4.0 (7) ) Liquid paraffin 2.0 (8) Squalane 2.0 (9) Sorbitan sesquioleate 1.5 (10) Lecithin 0.5 (11) Ethanol 105.0 Using the above (1) to (10), a powder cosmetic is prepared by a conventional method, The solvent component (11) was added thereto to form a slurry. Using the following cosmetics container and concave substrate, this slurry is pressure-injected under the following conditions, primary drying, press,
Secondary drying and solidification gave a thin eyed dough with a content of about 0.8 g. The obtained Aishado did not have any noticeable gaps in the contents, had an aesthetic appearance and was excellent in usability.

Setting conditions Cosmetic container: A round metal plate with a diameter of 3.3 cm and a depth of 0.15 cm (with a filling hole in the center of the bottom surface).

Concave substrate: Recess volume 0.5 cm ³ Filling pressure: 5 kg / cm ² Filling amount: 1.6 g (slurry) Primary drying: Solvent approx. 80% volatilization Pressing pressure: 10 kg / cm ² Secondary drying: Natural drying Comparative example 1 The same slurry as in Example 1 was poured directly into a gold plate for filling, and then naturally dried. The obtained Aishado had a sharp loss of contents.

Comparative Example 2 In Example 1, absorbent paper with high solvent absorption was placed between the concave substrate and the cosmetic container and filled. In the obtained Aishado, the solvent was absorbed by the absorbent paper and the fluidity was lost, so that the cosmetic was not evenly distributed to the peripheral portion of the container.

[Brief description of drawings]

 FIG. 1 is a schematic explanatory view showing a process example of the present invention.

Claims (1)

[Claims] 1. After closing the opening of a cosmetic filling container having a cosmetic injection hole in a container wall by facing the concave surface of a concave base body, the powder cosmetic base material dissolved in a solvent is pressed through the injection hole. After injecting, the concave substrate is removed, and after primary drying, the surface of the injection powder cosmetic base material that is convexly molded is pressed so that it is in the same horizontal plane as the edge of the container opening, and then secondary drying and solidification. A method for filling powdery cosmetics, comprising: