JPH0662389B2 - Method for producing convex solid powder cosmetic - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a method for producing a convex solid powder cosmetic such as eye shadows, blushers, foundations, etc. More specifically, it is molded into a wide variety of concave shapes. The present invention relates to a method for producing a convex solid powder cosmetic using a porous container and integrally with a powder support.

<Prior Art> Conventionally used solid powders, which are commonly used cosmetics, are
For example, various powder products such as those applied compactly are prepared by pressing the raw material powder filled in the inner plate with a pressing plate to solidify it, or by adding a solvent to the inner plate to form a slurry-like powder dispersion liquid. After filling, the solvent is dried to evaporate and solidify, or the cosmetics that are made viscous by dissolving in a solvent in a compact body with a medium plate or saucer are pressed through a small hole in the bottom of the medium plate or saucer. There is known a method of filling by injection, absorbing the solvent with an absorber, or sucking in a vacuum to solidify.

In this case, in the type in which the powder is simply pressed by the pressing plate to be solidified, the powder scatters and the filling and pressing work environment is poor,
Moreover, there is a drawback that the inner plate is deformed by pressing. In a type that fills a medium with a slurry of powder dispersion and then dries it to evaporate the solvent to solidify it, the solid powder shrinks due to the evaporation of the solvent, causing depressions, cracks, and solidification on the surface. There is a risk that the powder will fall out of the inner plate. In addition, the type in which the cosmetic that is made viscous by dissolving with a solvent is pressure-injected from the hole in the bottom of the inner plate or the receiving plate, and the surface absorber absorbs the solvent or sucks it in a vacuum is It is difficult to balance the flowability problem and the absorption power of the melted and viscous cosmetics,
It has defects such as requiring considerable skill and time.

<Problems to be Solved by the Invention> In view of the above-mentioned circumstances, the present invention uses a powdery dispersion liquid in the form of a slurry at the time of solidification of the powder to eliminate scattering of the powder, and
A wide variety of convex solid powder cosmetics are used by using a porous container in which a wide variety of concave shapes are used as the filling container, preventing shrinkage and cracking of the solid powder, and giving the best surface finish. The object of the present invention is to provide a manufacturing method that can be easily obtained.

<Means for Solving Problems> The present invention provides a slurry-like powder dispersion in which powder is dispersed in a solvent, and the powder dispersion has a container bottom having a spherical surface, a trapezoidal surface, a rhombic surface, and an uneven pattern surface. Fill into a porous container that is freely molded into a round shape, a rectangular shape, a polygonal shape, or a multifaceted concave shape having the same shape, etc., through a notched hole of a powder support table arranged on the upper surface of the porous container. At the same time, the solvent contained in the powder dispersion is permeated and discharged from the porous body container by pressing air pressure and vibration of the vibrating frame, solidifying the powder into a convex shape, and then taking out from the porous body container. To obtain a convex solid powder cosmetic that is integrated with the powder support.

<Operation> By adopting the above-mentioned manufacturing method, the slurry-like powder dispersion liquid is directly filled in the lower porous container through the meshed holes for fixing the powder on the powder supporting base in the opposite direction, Moreover, since the powder dispersion in the porous body is subjected to air pressure on the upper surface and vibration of the container itself, only the solvent contained in the powder dispersion permeates into the solvent receiving container below or is discharged or dried. You can That is, the convex solid powder cosmetics to be the finished surface,
Since the pore diameter of the porous body is 1 to 100 µ, preferably 5 to 20 µ, the surface is extremely smooth and clean. Of course, by selecting the shape of the concave porous container, cosmetics having various outer shapes can be easily formed.

<Example> The following is a detailed description of an apparatus for carrying out the manufacturing method of the present invention with reference to the drawings.

1 is a porous container 2 whose inner surface is molded into various concave shapes
A vibrating frame portion 1a for supporting (a truncated cone in FIG. 1)
It is a solvent receiving container having. In this case, the material of the porous container 2 is polyethylene, polypropylene, polymethylmethacrylate, polyvinyl chloride, polyvinylidene chloride,
It is made of a material such as polyvinyl alcohol, polystyrene, etc., in which the pores are continuously connected, or a porous material such as ceramics, with a pore size of 1-100 μm, preferably 5 μm.
A material exhibiting 20μ is used. The solvent receiving container 1 is slidable up and down by an operating device 7 arranged on the side, and an exhaust device 12 is connected through an valve 11 from an atmospheric opening 1b formed in the side wall of the container. Further, the pressing plate 3 is arranged on the porous container 2 and the packing 5 above the solvent receiving container 1, and the pressing device-equipped container 4 is arranged on the pressing plate 3. Slurry powder dispersion A
A compressor 9 for air-pressing is connected and is slid up and down by an actuator 8 arranged on the side. 1
3 is a vibrating device provided on a vibrating frame portion 1a which is an upper portion of the solvent receiving container 1. Further, the powder support base 6 is set on the upper part of the porous body container 2, and the powder dispersion liquid A can be filled in the center which is the bottom part of the powder support base 6 and can be pressed by air pressure and solidified. A hole 6a (having a funnel-shaped cross section in FIG. 1) having a mesh 6b for fixing the formed powder and preventing it from coming off is formed. The mesh 6b may be the entire bottom surface of the support base. This hole 6
The hole 5a of the packing 5 and the hole 3a of the pressing plate 3 are made to face each other in accordance with a and are connected.

First, the porous container 2, the packing 5, and the pressing plate 3 in which the powder supporting base 6 is set are sequentially stacked on the solvent receiving container 1. When the powdery dispersion liquid A in the form of a slurry is filled, the container 4 with a pressing device is slid up by the upward movement of the operating device 8 and separated from the pressing plate 3, and in this state, the powdery dispersion liquid becomes a separate means. A predetermined amount of the powder dispersion liquid A is filled by a filling device (not shown) from the central hole 3a of the holding plate 3 through the hole 6a of the powder support base 6 into the concave portion 2a of the concave porous container 2 by natural pouring. Is performed (for example, an amount in which at least the mesh 6b is submerged after the solvent is discharged).

Next, after the powder dispersion liquid A is filled, the container 4 with a pressing device is slid down by the downward movement of the operating device 8 to be brought into close contact with the holding plate 3.

Here, the compressor 9 is driven, the valve 10 is opened, compressed air is made to flow into the container 4 with a pressing device, and the entire upper surface of the powder dispersion liquid A is pressed by air pressure.

In this case, the discharge device 12 is activated and the valve 11 is opened. Further, the vibrating device 13 is operated to vibrate the periphery of the porous container 2 to prevent the dilatancy of the powder dispersion liquid A and make it uniform. Only the solvent Aa is squeezed out from the porous body container 2 in the pressed powder dispersion liquid A, the solvent is dropped into the solvent receiving container 1, and the powder dispersion liquid A is removed and collected by the discharge device 12. On the other hand, the powder A ′ remaining in the porous container 2 is the mesh 6 of the powder support base 6.
It solidifies in the state of being fixed to b. After squeezing the solvent,
The solidified powder A'integrated with the powder support 6 is taken out from the porous container 2 and the residual solvent is removed in a separate drying chamber to obtain a convex solid powder cosmetic.

Since the surface of this cosmetic material is directly separated from the porous container 2 having a pore diameter of 1 to 100 μm, the surface has a smooth finish and is uniform and beautiful.

The concave shape of the porous body container 2 may be a truncated cone shape, a rhombus shape, or the like, and may be provided with uneven characters or pictorial patterns. For example, as shown in FIG. 4, if the concave shape is made into a square shape and the central flat surface is marked with the letter "A", a similar pattern appears on the solidified powder A'for removing the pit. Add value. In this method, since the powder is made into a slurry with a solvent, there is no scattering of the powder at the time of filling, a constant air pressure is applied to the entire liquid after filling, and the contact area with the porous container 2 is widened to increase the solvent. As a result, the solidified powder that is uniform and uniform can be produced, and shrinkage and cracks in the final product can be prevented.

Moreover, the whole operation such as filling the powder dispersion, discharging the solvent, and drying and removing the residual solvent in the solidified powder is relatively easy,
In addition, it is possible to manufacture a variety of products with various shapes and patterns, and it is also possible to manufacture a plurality of porous containers arranged side by side in the same pressing device.

The formulation of this slurry-like powder dispersion liquid is, for example, as in Japanese Patent Application No. 59-99493 presented by the present applicant.

Eye shadow Amino acid treated mica titanium 95 parts Benton 38 ^{* 1} 5 parts Fragrance Fronsolve AE ^{* 2} 400 parts Blusher Silicone treated mica 22 parts Silicone treated mica titanium 22 parts Silicone treated talc 34 parts Silicone treated inorganic pigment 8 parts Silicone treated organic pigment 2.7 parts Zinc stearate 10 parts Sven ^{* 3} 1.3 parts Perfume Suitable amount Preservative Suitable amount CG Triflon A ^{* 4} 300 parts However, * 1, * 3… organic bentonite * 2, * 4… volatile fluorinated hydrocarbons Solvent <Effect of the Invention> As described above, in the method for producing a convex solid powder cosmetic of the present invention, the porous container is filled with the slurry-like powder dispersion, and the entire lower surface of the powder dispersion is smooth. Contact the porous container with the surface, press the upper surface of the powder dispersion liquid with a constant air pressure to discharge the contained solvent, solidify the powder as a unit with the support in the porous container, then dry and homogenize. Demu This is to obtain a powder-free solid material.

Therefore, it is possible to prevent surface depression and cracks, and to easily produce a wide variety of convex solid powder cosmetics with a clean surface to be used and to fix the solid powder to the support base. Therefore, it can be easily set in a compact or other container, which is practically advantageous.

[Brief description of drawings]

The drawing shows an embodiment of the apparatus used directly in the method of the present invention, FIG. 1 is an explanatory view, and FIG. 2 is the center of the completed convex solid powder cosmetic, which is a cross section of FIG. FIG. 3 is a cross-sectional view, FIG. 3 is a plan view, and FIG. 4 is a plan view of a convex solid powder cosmetic material according to another embodiment. 1 ... Solvent receiving container, 2 ... Porous body container, 3 ... Holding plate, 4 ... Pressing device container, 6 ... Powder support base, 7, 8
...... Actuating device, 9 ...... Compressor, 12 ...... Discharging device, 13
…… Vibration device.

Claims (2)

[Claims] 1. A mesh supporting the filling of a slurry-like powder dispersion and the fixing of solidified powder is provided on the bottom of a powder support that is in contact with the upper surface of a multi-purpose concave shaped porous container. A hole is provided, and the powder dispersion liquid is naturally poured into the upper surface of the hole from the hole of the communicating pressing plate to fill a predetermined amount, and then the surface of the powder dispersion liquid is pressed with air pressure or with vibration while pressing with air pressure. Then, the solution contained in the powder dispersion is permeated and discharged below the porous container or dried to obtain a solid powder in the form of a porous container on the upper part of the powder support. A method for producing a mold-solid powder cosmetic. 2. A plastic porous body having continuous pores such as polyethylene, polypropylene, polymethylmethacrylate, polyvinyl chloride, polyvinylidene chloride, polyvinyl alcohol, polystyrene, etc.
Alternatively, a porous material such as ceramic having a pore diameter of 1 to 10
Claim 1 exhibiting 0μ, preferably 5 to 20μ
Item 7. A method for producing a convex solid powder cosmetic according to item.