JP2010215582A - Method for producing powder solid cosmetic, and the resultant powder solid cosmetic prepared by the method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for producing a powder solid cosmetic which is free from such problems wherein: surface appearance and color on makeup are different from each other; a powder on a press surface is debonded in the production process and the mechanical strength of its own is not always high. <P>SOLUTION: The method for producing a powder solid cosmetic includes subjecting a powder cosmetic to compressive molding using a press mold. In this method, in making the compressive molding, a porous resin film 70° or greater at 25°C in the contact angle with water and having micropores 500 μm or less in size on its surface is interposed in between the powder cosmetic and the press mold. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a method for producing a powder solid cosmetic and a powder solid cosmetic obtained by the production method.

  In powder solid cosmetics, not only the finish but also the one emphasizing that it is an attractive surface appearance is required. Especially for powdered solid cosmetics used for the eyes, such as eye shadows and eye colors, higher glossiness is also required in the surface appearance.For foundations, teak, white powder, etc., the finished color of the makeup and the surface appearance There is a tendency to match the appearance color.

  However, if the powder on the surface of the powdered solid cosmetic after filling the container is smooth and not uniform, the gloss of the surface appearance will be reduced and the appearance will be darker and darker than the color with the appearance color. It was sometimes seen. This phenomenon was more remarkable when plate-like powder was used.

  On the other hand, in the conventional molding of powdered solid cosmetics, it is common to use a method in which a woven fabric or paper is placed between the powdered cosmetic material as a raw material and the stamping die. This is a technique required for improving the mold releasability after the compression filling and improving the efficiency by eliminating the need to clean the surface of the filling die.

  For example, a technique for improving the finish of the upper surface by disposing cloth, paper, polyethylene sheet, polyvinylidene chloride, polyethylene terephthalate, or the like between the powder cosmetic and the mold (see Patent Document 1). . However, in this method, when the adhesion between the sheet and the powder is strong, the sheet lifts the surface of the powdered solid cosmetic when the press is released after molding, and the press surface peels off. Continuous production may be difficult. In particular, the sheet of polyvinylidene chloride or polyethylene terephthalate is not porous, so it is easy to fill with a part containing air in the cosmetic during filling. In this case, the solid cosmetic suddenly becomes an air layer during use. There were cases where problems such as cracking along the surface or shattering when dropped were caused.

JP 2005-112778 A

  Therefore, the problems of the present invention are not limited to the above-mentioned various disadvantages of the prior art, that is, the problem that the surface appearance is different from the color at the time of makeup, the problem that the powder on the press surface is peeled off during the manufacturing process, and the powder solid cosmetic itself. An object of the present invention is to provide a method for producing a powdered solid cosmetic that can solve problems such as high strength.

  The present inventor has intensively studied to solve the above problems, and when producing a powdered solid cosmetic by compression molding the powder cosmetic with a mold, between the powder cosmetic and the mold, It was found that by interposing a specific resin film, it was possible to stably produce a powder solid cosmetic having excellent surface smoothness, close coloring and appearance, and excellent strength, and completed the present invention.

  That is, the present invention relates to a method for producing a powdered solid cosmetic, in which the powder cosmetic is compression-molded using a mold, and in compression molding, the powder cosmetic and the mold are brought into contact with water. An object of the present invention is to provide a method for producing a powdered solid cosmetic, characterized in that a porous resin film having a corner of 25 ° C. and 70 ° or more and having pores of 500 μm or less on the surface is interposed.

  Moreover, this invention provides the powder solid cosmetics manufactured by the said manufacturing method.

  According to the production method of the present invention, it is possible to stably produce a powdered solid cosmetic having excellent surface smoothness, close coloring and appearance, close appearance and excellent luster, and excellent strength.

It is drawing which showed typically the compression molding apparatus for enforcing the manufacturing method of this invention.

  In the method for producing a powdered solid cosmetic according to the present invention, when the powdered solid cosmetic is produced, the contact angle with water is 70 ° or more at 25 ° C. between the powder cosmetic to be compressed and the die. It is characterized in that a porous resin film having pores of 500 μm or less is interposed on the surface.

  The first condition of the porous resin film used in the present invention is to have high hydrophobicity such that the contact angle with water at 25 ° C. is 70 ° or more. The second condition of the porous resin film used in the present invention is that a large number of holes of 500 μm or less are formed.

  Examples of the highly hydrophobic resin film that can satisfy the first condition of the porous resin film include polypropylene-based and polyester-based films. These resin films may be formed using a plasticizer. The porous resin film may be a film made of a mixture of a crystalline thermoplastic polymer and a blending compound. Examples of such a crystalline thermoplastic polymer include polypropylene, and specific examples thereof include a film described in Japanese Patent No. 2757918.

  In addition, since the surface of the resin film is pressed against the surface of the powdered solid cosmetic with an extremely high pressure by the pressing mold, there is a possibility that the resin film may be cut at the gap between the pressing mold and the inner tray. Is required. For this reason, it is more preferable that the resin film has a tensile strength of 7 N / cm or more (according to JIS P8113 measurement method).

  On the other hand, a plurality of holes having a diameter of 500 μm or less, which is the second condition of the porous resin film, serve as ventilation holes for excluding air contained in the powdered solid cosmetic. If it is a hole of this level, this can be maintained without being transferred to the surface of the powdered solid cosmetic. The number of holes is related to the size of the holes, but is preferably a number that is about 0.1 to 500 seconds / 100 cc in terms of Gurley air permeability (JIS L1096B method).

  Furthermore, the thickness of the porous resin film is preferably 20 to 70 μm, particularly 20 to 40 μm. This is because when the thickness of the film is within this range, the releasability between the powder cosmetic and the film is further improved, and details can be expressed when there is a pattern on the pressing die (convex shape).

  Furthermore, the porous resin film has a surface roughness Ra (JIS B 0601-1994) of 1.0 μm or less, and maintains a good releasability and is a powder solid makeup excellent in surface smoothness. From the viewpoint of obtaining a charge. However, in the present invention, if the contact angle of the film with water satisfies the above-mentioned numerical value, the releasability is good regardless of the surface roughness Ra of the film, and the appearance of the powdered solid cosmetic is good. improves.

  Hereinafter, the invention will be described in more detail with reference to the drawings showing one embodiment of the production method of the present invention.

  FIG. 1 is a drawing schematically showing a cross section of a compression molding apparatus used when compression molding a powder cosmetic using a mold. In the figure, 1 is a compression molding device, 3 is a powder cosmetic, 2 is a dish, 4 is a porous resin film, 5 is a film feeding device, 6 is a film winding device, 7 is a pressing die (convex), 8 Is a receiving type (concave type), 9 is a receiving part, and 10 is a pressure device.

  In the compression molding apparatus 1, the powder cosmetic 3 as a raw material is preliminarily weighed and filled in the inner tray 2 supported by the receiving portion 9 in the receiving mold 8. A pressing die (convex die) 7 provided with a space above the receiving portion 9 is driven downward by a pressurizing device 10 at a predetermined speed. The lower surface of the mold 7 is compressed into a predetermined shape by compressing the powder cosmetic 3 in the inner dish 2 through a porous resin film (hereinafter also simply referred to as “film”) 4.

  After holding the pressurized state for a certain time as necessary, the pressing die 7 is driven upward at a predetermined speed by the pressurizing device 10, and its lower surface is separated from the film 4. The film 4 is unwound from the film unwinding device 5 and wound by the film winder 6. When the pressing die 7 is raised, the film 4 is pitch-fed by the width of the inner tray 2 by the film winding device 6, and the surface in contact with the powder cosmetic 3 is updated. The intermediate dish 2 after the press is released is taken out from the receiving die 8 by the raising of the receiving portion 9. The press surface shape of the pressing die 7 may be a flat surface or may have irregularities such as patterns and characters.

  According to the present invention, the powder cosmetic to be a powder solid cosmetic is not particularly limited, and contains various cosmetic powders such as various pigments generally used in the cosmetic field and an oil component. If it is a thing, it will not specifically limit.

  However, the powdered solid cosmetic blended with the plate-like powder has a particularly great effect on the surface smoothness by using the production method of the present invention because the smoothness of the surface of the powdered solid cosmetic greatly affects the color of the appearance. It is possible to stably produce a powdered solid cosmetic that is excellent, has a similar appearance color and appearance color, has an excellent appearance with glitter, and has excellent strength. That is, the smoother the plate-like powder is arranged on the surface of the powdered solid cosmetic, the lightness L value of the appearance color increases, and the difference between the color after use and the appearance color of the unused product becomes smaller. When the powdery powder is a glitter powder, it tends to have a particularly bright appearance. The plate-like powder is not particularly limited, but has an aspect ratio. The arrangement of these powders depends on the film during filling.

  Such plate-like powders include those in the form of scales, flat shapes, etc., and specific examples thereof include sericite, mica, mica titanium, fish scale foil, bismuth oxychloride, synthetic phlogopite, oxidation Examples include iron-coated mica, gold foil, boron nitride, and plate-like alumina. Further, by using a surface-coated bright pigment obtained by coating a base powder such as mica titanium, phlogopite, glass powder, or silica powder with a pigment, variations in bright color can be expanded. These powders can be used alone or in combination of two or more.

  Moreover, when using plate-shaped powder as powder contained in the powder cosmetic used by this invention, it is preferable that the particle size is 5 micrometers or more. Examples thereof include inorganic powders such as mica, synthetic phlogopite, sericite, plate-like barium sulfate, plate-like alumina, boron nitride, plate-like silica, organic powders such as plate-like PMMA, and composite powders based on them. It is done. When the plate-like powder is a glitter pigment, the average particle size is preferably 15 μm or more from the viewpoint of glitter feeling, and more preferably 18 μm or more from the viewpoint of enhancing the glitter feeling. On the other hand, the average particle diameter is preferably 150 μm or less, and more preferably 90 μm or less, from the viewpoint of the uniformity and smoothness of the decorative film. The average particle size can be measured by a laser diffraction / scattering method using a laser diffraction / scattering particle size distribution analyzer (LA-920, manufactured by Horiba, Ltd.).

  In addition, the plate-shaped powder contained in the powder cosmetic may be surface-treated using a hydrophobizing agent. This improves the sustainability of the makeup. Examples of the hydrophobizing agent include silicone oils, ester oils, fatty acid metal salts, and fluorine compounds having a perfluoroalkyl group.

  You may mix | blend cosmetic powder other than the plate-shaped powder mentioned above with the powder cosmetics used by this invention. For example, you may mix | blend an inorganic pigment, an organic pigment, pigment | dye powder, composite powder, etc. Specifically, inorganic pigments such as conch, ultramarine, bengara, yellow iron oxide, black iron oxide, titanium oxide, carbon black; zinc oxide, aluminum oxide, cerium oxide, silicon dioxide, magnesium oxide, zirconium oxide, antimony oxide, Inorganic powders such as magnesium carbonate, calcium carbonate, chromium oxide, chromium hydroxide, aluminum silicate, magnesium magnesium silicate, magnesium silicate, magnesium aluminum silicate, silicon carbide, barium sulfate; nylon powder, polymethyl methacrylate, acrylonitrile -Methacrylic acid copolymer powder, vinylidene chloride-methacrylic acid copolymer powder, urethane powder, polyethylene powder, polystyrene powder, organopolysiloxane elastomer powder, polymethyl Organic powders such as rusesquioxane powder, polytetrafluoroethylene powder, wool powder, silk powder, crystalline cellulose, magnesium stearate, zinc stearate, N-acyl lysine; organic tar pigments, lake pigments of organic dyes, etc. Dye powders: composite powders such as titanium oxide-containing silicon dioxide and zinc oxide-containing silicon dioxide. These powders may be used in combination of one or more of them. Further, these cosmetic powders may be surface-treated using a hydrophobizing agent. As the hydrophobizing agent, the same hydrophobizing agent that can be applied to the bright pigment described above can be used. These cosmetic powders can be used alone or in combination of two or more thereof, and are preferably contained in the raw material powder in an amount of 0.01 to 30% by mass (hereinafter referred to as “%”).

  Moreover, an oil-based component is mix | blended with the powder cosmetics used by this invention. This oil component has a role as a powder binder, and is important in terms of adhesion of the cosmetic film to the skin when a cosmetic is applied. The main functions of the oil phase include moldability in product form, adhesion of a decorative film to the skin, finish and feeling of use due to bonding between powder particles, and the like. Furthermore, other functions such as coloring of the colorant and ultraviolet absorption may be exhibited.

  Examples of oily components that can be used in the powder cosmetic of the present invention include those usually used in cosmetics. For example, hydrocarbons, fats and oils, waxes, hardened oils, ester oils, regardless of origin such as animal oils, vegetable oils, synthetic oils, and properties such as solid oils, semi-solid oils, liquid oils, volatile oils, etc. Fatty acids, higher alcohols, silicone oils, fluorine oils, lanolin derivatives, oily gelling agents and the like can be used.

  The content of the oily component is preferably 3 to 20%, more preferably 5 to 15% in the powder cosmetic. By setting it within this range, moldability, adhesion to the skin at the time of application, and the like are improved. Further, it is possible to improve the coloration while ensuring moderate disintegration that is not excessive, and to avoid dusting and the like. Furthermore, unevenness, caking of cosmetics, swaying of the cosmetic film, and the like are prevented. Moreover, it is preferable that content of an oil-based component exists in the said range from the balance with the compounding quantity of a luster pigment.

  Furthermore, in addition to the above components, the powder cosmetic may be premixed with a solvent or water that evaporates after compression filling. This has the function of improving the filling moldability and the strength after drying.

  Furthermore, in addition to the cosmetic powders described above, the powder cosmetics include components used in normal cosmetics, such as aqueous components, surfactants, ultraviolet absorbers, humectants, cooling sensates, Antioxidants, cosmetic ingredients, preservatives, fragrances and the like can be appropriately blended within a range not impairing the effects of the present invention.

  The use of the powdered solid cosmetic produced by the above-described method of the present invention is not particularly limited, but eye makeup cosmetics used for eyes such as eye shadows, eye colors, eye liners, foundations, cheeks, etc. It is extremely suitable as a product that emphasizes the appearance color.

  The powdered solid cosmetic produced by compressing and filling using the porous resin film of the present invention described above has excellent surface smoothness, close coloring and appearance color, and glittering feeling. It has an excellent appearance. Furthermore, the color difference between the color of the powdered solid cosmetic filling surface (before use) and the surface rubbed with a prop (after use) is preferably 0 or more and less than 0.3 in ΔE. This is because the filling surface is released cleanly without fuzzing, and the plate-like powder is lined up smoothly immediately after filling, resulting in a gap with the color of the plate-like powder when rubbing the surface after use. This is thought to be due to difficulties. This has the effect of making the consumer feel the color when using it, especially in products where subtle color differences are important, such as foundations, and using it.

  EXAMPLES Next, although an Example and a comparative example are given and this invention is demonstrated in more detail, this invention is not restrict | limited at all by these Examples.

Example 1
Powder solid foundation:
Among the foundation compositions shown below, first, 1 to 12 were mixed, and then 13 to 15 were added and mixed. This was uniformly pulverized to obtain a powder cosmetic.

Next, this is filled in an intermediate dish (50 mm × 43 mm × 8 mm), and using the apparatus shown in FIG. 1, each film shown in Table 1 is placed between the powder cosmetic and the pressing die having a planar shape. The mixture was press-filled (press pressure: 3.0 × 10 ⁷ Pa) to obtain powdered solid cosmetics (foundations) of Invention products 1 to 3 and Comparative products 1 to 7.

  About the obtained foundation, the difference (ΔE) between the appearance color of the foundation surface before use and the surface appearance color after use was measured. This appearance color evaluation was expressed by ΔE by comparing the appearance of the unused surface of the molded product with the appearance color of the surface after removing the powder from the surface after rubbing twice with a mat. Table 1 shows the characteristics of each film and ΔE.

[Foundation composition]
Compounding amount (wt%)
1. Hydrogenated phospholipid-treated titanium oxide ^{* 1} 10
2. Hydrogenated phospholipid-treated yellow iron oxide ^{* 2} 3
3. Hydrogenated phospholipid treated Bengala ^{* 3} 0.5
4). Hydrogenated phospholipid-treated black iron oxide ^{* 4} 0.8
5). Hydrogenated phospholipid-treated fine particle titanium oxide ^{* 5} 5
6). Silicone-treated talc ^{* 6} 30
7). ^7. Silicone-treated sericite ^{* 7} Residual amount Silicone-treated synthetic phlogopite ^{* 8} 10
9. Plate-like barium sulfate ^{* 9} 5
10. Silicone powder ^{* 10} 2
11. Nylon powder 5
12 Preservative suitable 13. Silicone oil ^{* 11} 3
14 Glyceryl tri-2-ethylhexanoate 5
15. 2 ethylhexyl paramethoxycinnamate 3
* 1 1% hydrogenated soybean phospholipid processed product
* 2 Same as above
* 3 Same as above
* 4 Same as above
* 5 Same as above
* 6 Products treated with 1% methylhydrogenpolysiloxane
* 7 Same as above
* 8 Same as above
* 9 Plate-like barium sulfate HM (manufactured by Sakai Chemical Industry Co., Ltd.)
* 10 KSP101 (Shin-Etsu Chemical Co., Ltd.)
* 11 Silicon KF96 (100CS) (manufactured by Shin-Etsu Chemical Co., Ltd.)

[Results]

  As is clear from the results shown in Table 1, the product of the present invention did not have a small appearance color difference before and after use compared to the comparative product.

Example 2
Powdered solid eye color:
Among the eye color compositions shown below, components 1 to 7 are mixed, and then 8 to 10 are added and pulverized. Further, 11 is added and mixed, and coarsely pulverized to prepare a powder cosmetic. This is filled in an inner dish (15 mm × 20 mm × 3 mm), and using the apparatus as shown in FIG. 1, each film shown in Table 2 (however, the same material as that used in Table 1) is powdered. After being filled between body cosmetics and a pressing die having a planar shape and press-filled (press pressure 1.5 × 10 ⁷ Pa), it is dried and powdered solid cosmetics of Invention 4 and Comparative products 8 to 13 ( Eye color).

  About the obtained eye color, the releasability, glitter, and drop strength were evaluated by the following methods. The results are shown in Table 2.

[Eye color composition]
Compounding amount (wt%)
1. Mica titanium ^{* 12} 20
2. Synthetic phlogopite titanium ^{* 13} 20
3. Glass pearl ^{* 14} 5
4). 4. Synthetic phlogopite ^{* 15} Residual amount Titanium oxide 2
6). Talc 15
7). Nylon powder 3
8). Preservative suitably 9.2 Cetyl ethylhexanoate 5
10. Phenyltrimethicone 5
11. Purified water 8
* 12 Chimilon Super Red (Merck)
* 13 HELIOS R100 (Topy Industries, Ltd.)
* 14 Metashine 1120RC-Y (Nippon Sheet Glass Co., Ltd.)
* 15 PDM-10L (Topy Industries, Ltd.)

〔 Evaluation methods 〕
(1) Releasability 100 powder solid cosmetics were produced, the surface of the powder solid cosmetics was visually observed, and the peeled state of the surface was evaluated. The ratio of the powdered solid cosmetic material that passed the total powdered solid cosmetic material was calculated, and the releasability was evaluated according to the following criteria according to the yield.

Evaluation Evaluation Contents ◎: The ratio of the accepted product is 99% or more ○: The ratio of the accepted product is 90% or more △: The ratio of the accepted product is 70% or more ×: The ratio of the accepted product is less than 70%

(2) Brightness The questionnaire survey was conducted on the appearance of the powdered solid cosmetics for 10 professional panelists. In the questionnaire, each panelist was asked to observe the appearance of each powdered solid cosmetic, and "brightness is good", "brightness is slightly good", "cannot say either", "brightness is not so good", "brightness is not good" ”Was evaluated in five stages. As a result, the number of panelists evaluated as “bright” and “bright” was evaluated as follows.

Evaluation ◎: 8 to 10 panelists rated as “bright” and “bright” ○: 6 to 7 panelists rated as “bright” and “bright” 4 to 5 panelists rated as “bright” and “bright” x: 0 to 3 panelists rated as “bright” and “bright”

(3) Drop strength Five powder solid cosmetics were prepared and dropped three times from a height of 50 cm in a container, and changes in the appearance of the powder solid cosmetics before and after dropping were evaluated by visual observation. . As a result, the worst condition was evaluated as follows.

Evaluation ○: Almost no change in appearance. Δ: Appearance changed slightly, such as cracks.
×: Appearance changed significantly, such as cracking.

[Results]

  As apparent from Table 2, the product of the present invention was excellent in releasability, brightness and drop strength compared to the comparative product.

  According to the production method of the present invention, it is possible to stably produce a powdered solid cosmetic having excellent surface smoothness, close coloring and appearance, close appearance and excellent brightness, and excellent strength. Is possible.

  Therefore, the powdered solid cosmetic obtained by the production method of the present invention is particularly important for the eye makeup cosmetic used for the eye shadow, eye color, eyeliner and the like, and the color of the appearance such as foundation, teak, etc. As a product to be used, it can be used very suitably.

DESCRIPTION OF SYMBOLS 1 Compression molding apparatus 2 Medium dish 3 Powder cosmetics 4 Porous resin film 5 Film feeding apparatus 6 Film wind-up apparatus 7 Stamping (convex type)
8 Receiving type (concave type)
9 Receiving part 10 Pressure device

Claims (6)

  A method for producing a powdered solid cosmetic, wherein the powder cosmetic is compression-molded using a pressing die, and the compression angle is set at a contact angle of 25 ° C. with water between the powder cosmetic and the pressing die. A method for producing a powdered solid cosmetic, comprising a porous resin film having a pore of 70 ° or more and having pores of 500 μm or less on the surface.   The method for producing a powder solid cosmetic according to claim 1, wherein the porous resin film has a thickness of 20 to 70 µm.   3. The method for producing a powder solid cosmetic according to claim 1, wherein the porous resin film has a Gurley air permeability (JIS L1096B) of 0.1 to 500 seconds / 100 cc.   The method for producing a powder solid cosmetic according to any one of claims 1 to 3, wherein the porous resin film is a polypropylene film.   The method for producing a powder solid cosmetic according to any one of claims 1 to 4, wherein the powder solid cosmetic contains 5 to 80% by mass of a plate-like powder having an average particle diameter of 5 µm or more. After filling a cosmetic powder and a cosmetic powder containing an oil component into a filling container, the surface has a contact angle with water of 70 ° or more at 25 ° C. and a pore having pores of 500 μm or less on the surface. Powder solid cosmetics obtained by compression molding with a pressing mold in the state of interposing an adhesive resin film.

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