JPS624218A - Production of solid powder cosmetic having convex form - Google Patents

Abstract

PURPOSE:To produce a solid powder cosmetic having convex form and integrated with a powder-supporting base, by placing a powder-supporting base having mesh holes on the top of a concave porous vessel, filling a slurry powder dispersion liquid through the holes into the vessel and discharging the dispersing solvent downward by pneumatic pressure. CONSTITUTION:For example, holes 6a having mesh 6b for filling and fixing a slurry powder dispersion liquid A is placed at the bottom of the powder- supporting base 6 contacting with the porous vessel 2 having a concave form. The dispersion A is filled through the hole 3a of the pressing plate 3 connected freely to the upper face of the hole 6a, and the surface of the dispersion is pressed with pneumatic pressure applied by the compressor 9. The solvent of the dispersion liquid A is impregnated through the porous vessel and discharged downward from the vessel leaving solid powder A' having the form of the porous vessel on the powder-supporting bed 6. The porous vessel is preferably made of a porous material having interconnected pore structure, e.g. PE, PP, etc., and having a pore diameter of 5-20mu. The shrinkage and cracking of the solid powder can be prevented and a product having finely finished surface can be obtained.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a method for producing convex solid powder cosmetics used as eye shadows, blushers, foundations, etc. The present invention relates to a manufacturing method for obtaining a convex solid powder cosmetic using a porous container and a powder support stand.

<Conventional technology> Conventionally, solid powders that are commonly used as cosmetics are
For example, various powder products, such as those used in compacts, are produced by pressing the raw material powder filled in an inner tray with a pressure plate to solidify it, or by adding a solvent to the inner tray and making a powder dispersion into a slurry. After filling, the solvent is evaporated by drying to solidify it, or the cosmetic that has been dissolved in a solvent and made viscous is placed in a compact with an inner plate or saucer, and then the cosmetic is heated through a small hole at the bottom of the inner plate or saucer. Methods of filling by injection, absorbing the solvent with an absorber, or suctioning with a vacuum to solidify are known.

In this case, the type that simply presses the powder with a press plate to solidify it causes the powder to scatter and creates a poor filling and pressing work environment.
Another disadvantage is that the inner plate is deformed by pressure. With the type that solidifies by filling a slurry-like powder dispersion into an inner tray, drying and evaporating the solvent, the solid powder shrinks due to the evaporation of the solvent, causing depressions and cracks on the surface, and solidification. There is a risk that powder may fall out of the inner tray. In addition, the type in which the cosmetics dissolved with a solvent and made viscous is injected under pressure through the hole at the bottom of the inner tray or saucer, and the solvent is absorbed by the surface absorber or sucked by vacuum, depends on the size of the hole in the surface absorber, Problems with the fluidity of cosmetics that have been melted and made viscous and the difficulty in balancing the absorption power, etc.
It has defects such as requiring considerable skill and time.

<Problems to be Solved by the Invention> In view of the above circumstances, the present invention uses a slurry-like powder dispersion liquid when solidifying the powder, eliminates scattering of the powder, and
The filling container is a porous container molded into a wide variety of concave shapes to prevent shrinkage and cracking of the solid powder, and to achieve the best surface finish, allowing for a wide variety of convex solid powder cosmetic shapes. The purpose is to provide a manufacturing method that can be easily obtained.

<Means for Solving the Problems> The present invention provides a slurry-like powder dispersion in which powder is dispersed in a solvent, and the powder dispersion is dispersed into a container with a spherical bottom, a trapezoidal surface, a rhomboidal surface, or an uneven patterned surface. Porous containers can be freely molded into round, square, polygonal, polygonal, or concave shapes, such as
Filling the porous container through the meshed holes of the powder support placed on the upper surface of the porous container, the solvent contained in the powder dispersion is
The powder is permeated and discharged from the porous container by suppressing air pressure and vibrating the vibrating frame, solidifying the powder into a convex shape, and then taking it out from the porous container and integrating it with the powder support stand to form a convex solid powder. It is used to obtain body cosmetics.

<Function> By adopting the above manufacturing method, the slurry-like powder dispersion liquid is directly filled into the porous container at the bottom through the holes with the mesh that fixes the powder on the powder support stand, which is turned in the opposite direction. In addition, since the powder dispersion liquid is subjected to air pressure suppression on the upper surface and the imaging of the container itself in the porous container, only the solvent contained in the powder dispersion liquid can reliably permeate and drain into the container through the solvent receptacle below. Or it can be dried. In other words, the convex solid powder cosmetic that becomes the finished surface is
The pore diameter of the porous body is 1 to 100μ, preferably 5 to 20μ
This results in an extremely smooth and clean surface.

Of course, by selecting the shape of this concave porous container, cosmetics with a wide variety of external shapes can be easily produced.

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

, 1 is a photographing frame part 1 that supports a porous container 2 (in FIG. 1, a truncated cone shape) whose inner surface is molded into various concave shapes.
The solvent receptacle with a is a container.

In this case, the material of the porous container 2 is a porous plastic material with continuously connected pores such as polyethylene, polypropylene, polymethyl methacrylate, polyvinyl chloride, polyvinylidene chloride, polyvinyl alcohol, polystyrene, or a porous material such as ceramic. material with a pore diameter of 1
A material exhibiting ~100μ, preferably 5-20μ is used. The container 1 can be freely slid up and down with an actuating device @ 7 placed on the side of the container, and an atmospheric opening 1 is provided in the side wall of the container.
A discharge device 12 is connected through a valve 11 from b. Further, in the solvent receiver, a presser plate 3 is arranged on the porous container 2 and the packing 5 on the upper part of the container 1, and a container 4 with a pressing device is arranged on the presser plate 3. A compressor 9 for compressing the slurry-like powder dispersion A with air is connected to this container 4 with a suppression device through a valve 10, and is configured to slide up and down by an actuating device 8 disposed on the side. It becomes as. A solvent receiver 13 is an imaging device provided on the vibrating frame 1a which is the upper part of the container 1. In addition, a powder support 6 is mounted on the top of the porous container 2, and the powder dispersion A can be filled in the center of the bottom of the powder support 6, which can be pressed using air pressure. Moreover, holes 6a (funnel-shaped in cross-section in FIG. 1) are formed with meshes 6b to fix the solidified powder and prevent it from being handled. Further, the mesh 6b may be formed entirely on the bottom of the support base. Fit the packing 5 to fit this hole 6a.
The hole 5a of the holding plate 3 and the hole 3a of the holding plate 3 are made to face each other and communicate with each other.

First, the solvent receiver is a porous container 2 with a powder support 6 placed on top of the container 1. Patsukin 5. Stack the presser plates 3 one after another.

When filling the powder dispersion liquid A in the form of a slurry, the container 4 with the pressing device is slid upward by the upward movement of the actuating device 8, separated from the presser plate 3, and in this state, the powder dispersion liquid, which is used as a separate means, is Using a filling device (not shown), a predetermined amount of powder dispersion A is filled into the recess 2a of the concave porous container 2 through the hole 3a in the center of the holding plate 3 and the hole 6a in the powder support base 6. For example, at least the cable mesh 6b is submerged after the solvent is discharged.

Next, after filling with the powder dispersion A, the container 4 with the pressing device is slid downward by the downward movement of the actuating device 8 to bring it into close contact with the presser plate 3.

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

In this case, the discharge device 12 is operated to keep the valve 11 open. In addition, the vibration device 13 is operated to vibrate the periphery of the porous container 2 to prevent dilatancy and make the powder dispersion A uniform. From the powder dispersion A that has been pressed, only the solvent Aa is squeezed out from the porous container 2, and the solvent drips into the container 1, where it is removed and recovered by the discharge device 12. On the other hand, the powder A' remaining in the porous container 2 is transferred to the mesh 6b of the powder support base 6.
It solidifies in a state where it sticks to.

After squeezing out the solvent, the powder is transferred from the porous container 2 to the powder support stand 6.
The solidified powder A' integrated with the powder is taken out and the residual solvent is removed in a separate drying chamber to obtain a convex solid powder cosmetic.

Since the surface of this cosmetic 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 this porous container 2 is a truncated cone.

In addition to diamond shapes, it is also possible to add uneven letters or picture patterns. For example, as shown in Fig. 4, the concave shape is made into a rectangular shape,
If you mark the central flat surface with the letters rAJ,
A similar pattern appears on the solidified powder A', which is used to remove the body, increasing the product value. In this method, the powder is made into a slurry with a solvent, so there is no powder scattering during filling, a constant air pressure is applied to the entire filled condensate, and the contact area with the porous container 2 is widened so that the solvent This makes it possible to create a uniform and even solidified powder, which also prevents shrinkage and cracking in the final product.

In addition, the entire operation, including filling the powder dispersion, discharging the solvent, and drying and removing residual solvent in the solidified powder, is relatively easy.
In addition, it is possible to manufacture products with a wide variety of shapes and patterns, and it is also possible to manufacture a plurality of porous containers side by side in the same suppression device.

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

Eyeshadow amino acid treated mica titanium 95 parts 1 ton 38" 5 parts fragrance
Appropriate amount of Freonsolve A E ”'
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 Nisben*3 1.3 parts Fragrance
Appropriate amount of preservative
Appropriate amount CG Triflon A *4 300 parts However, *i, *3...Organic bentonite *2.
*4... Volatile fluorinated hydrocarbon solvent <Effect of the invention> As mentioned above, the method for producing the convex solid powder cosmetic of the present invention involves filling a porous container with a slurry powder dispersion. Then, the entire lower surface of the powder dispersion is in contact with a porous container with a smooth surface, and the upper surface of the powder dispersion is pressed with constant air pressure to discharge the contained solvent, and the powder is supported in the porous container. After solidifying as one with the table, it is dried to produce a uniform and even powder solid.
It's a good thing.

Therefore, it is possible to easily produce a wide variety of convex solid powder cosmetics that prevent the surface from sinking or cracking, have a clean surface, and prevent the solid powder from sticking to the support. This makes it possible to easily set it in a compact container, which is advantageous in practice.

[Brief explanation of the drawing]

The drawings show an example of an apparatus directly used in the method of the present invention, and FIG. 1 is an explanatory diagram, and FIG. FIG. 3 is a sectional view, FIG. 3 is a plan view, and FIG. 4 is a plan view of a convex solid powder cosmetic according to another embodiment. 1... Solvent amount is in a container, 2... Porous container, 3...
Holding plate, 4... Container with suppression device, 6... Powder support stand, 7.8... Actuation device, 9... Compressor, 12...
Discharging device, 13... vibrating device.

Claims (1)

[Scope of Claims] 1. The bottom of the powder support base, which is in contact with the top surface of the porous container molded into various concave shapes, is used for filling slurry-like powder dispersion liquid and for fixing the solidified powder. A hole with a mesh is provided, and after filling a predetermined amount of the powder dispersion liquid through the hole of a communicating presser plate on the upper surface of the hole, the surface of the powder dispersion liquid is pressed with air pressure, or the surface of the powder dispersion liquid is pressed with air pressure while vibrating. Then, the solvent contained in the powder dispersion liquid is permeated and discharged to the lower part of the porous container or dried, and a solid powder in the shape of a porous container is obtained on the upper part of the powder support base. A method for producing a molded solid powder cosmetic. 2. The porous container is made of a porous plastic material with continuously connected pores such as polyethylene, polypropylene, polymethyl methacrylate, polyvinyl chloride, polyvinylidene chloride, polyvinyl alcohol, polystyrene, or a porous material such as ceramic; The method for producing a convex solid powder cosmetic according to claim 1, wherein the pore size is 1 to 100μ, preferably 5 to 20μ.