JPS59170010A - Molded article of powdered cosmetic - Google Patents

Abstract

PURPOSE:The titled molded article not causing release by vibration and impact, having improved utility, obtained by bonding a molded article of powdered cosmetic blended with a water-swelling substance, etc. to a cushioning material consisting of resin foam, attaching the other face of the cushioning to a substrate. CONSTITUTION:Powder commonly used as cosmetic is blended with 0.1-5wt% water-soluble high polymer (e.g., CMC, or PVA), water-dispersible high polymer (e.g., vinyl acetate emulsion) or water-swelling substance (e.g., magnesium aluminum silicate) and molded into any shape to give a molded article of powdered cosmetic, which is bonded to one face of a cushioning material consisting of foam of polyethylene, acrylonitrile butadiene rubber, urethane, etc. with an aqueous solution of paste, and the other face of the cushioning material is attached to a substrate, usually an inner bottom of a container. The bonding of the powdered cosmetic to the cushioning material is preferably carried out before drying of the molded article with respect to bonding strength.

Description

[Detailed description of the invention] The present invention relates to a molded powder cosmetic product.

Conventionally, in the cosmetics field, when powder is molded to produce cake-type cosmetics, the powder mixed with excipients such as oils and fats and metal soaps is filled into an inner tray, and then an appropriate pressure is applied. It was pressed and molded. In this method, by changing the shape of the inner plate, for example, a rectangular parallelepiped,
Although various shapes such as cylindrical shapes can be obtained, they all have flat surfaces, and three-dimensional ones have not yet been obtained.

First, the present inventors discovered that if powder containing a specific amount of a water-soluble polymer, a water-dispersible polymer, or a water-swellable substance is kneaded with water and dried, it can be formed into any shape without using an inner plate. It was possible to produce three-dimensional molded powder cosmetics, and we realized that this product had a beautiful shape and excellent usability, which was not found in conventional powder cosmetics, so we proposed a patent application. Publication No. 56-192295). 1. Although the powder cosmetic molded product itself has sufficient strength, it must be placed in a container in order to be commercially available. However, it has been difficult to firmly adhere the powder cosmetic molded product to some kind of support. That is, even if a water-based or solvent-based adhesive is used to adhere the molded product of the powdered 111 material to a support, the weak vibrations cause the adhesive to separate. In view of these circumstances, we have conducted extensive research to create a product that can be sold in the general market by firmly adhering the essentially superior powdered two-four-component molded product to a support, and as a result, we have developed the above-mentioned product. Powder cosmetic moldings are made of resin foam using a specific aqueous adhesive solution.

We have discovered that if we adhere a cushion made of the resin foam and a 1θJ to a support, it is possible to achieve adhesion that does not come off even when exposed to vibrations or vibrations. The present invention has been accomplished.

The present invention contains o, 6 to 5% by weight of one or more selected from the group consisting of water-soluble polymers, water-dispersible polymers, and water-swellable substances, and A powdered 11LI*il molded product molded into an arbitrary shape is adhered to one side of a cushion made of resin foam using an aqueous glue solution, and the other side of the cushion is adhered to a support. This is a molded powder cosmetic product.

The water-soluble polymer, water-dispersible polymer, and water-swellable substance used in the present invention are powdered binders. Examples of water-soluble polymers include carboginomethylcellulose, methylcellulose,
Examples include cellulose derivatives such as hydroxymethylcellulose and hydroxyethylcellulose added with IEO, alginic acid, polyvinyl alcohol, and polyvinylpyrrolidone. Examples of water-dispersible polymers include:
Examples include vinyl acetate emulsion, acrylic emulsion, and polybutene emulsion. Examples of water-swellable substances include ion-exchangeable clay minerals such as red sea bream, sium aluminum silicate-1, and sodium magnesium silicate. Among the above-mentioned water-soluble polymers, water-dispersible polymers, and water-swellable substances, those using water-swellable substances are preferable because they have excellent removal on brushes and brushes, and are excellent in usability.

1-L is blended in an amount of 01 to 5% by weight of the dry and weighed boar of the powdered cotton material molded material. It is.

O1 city! ? If the V% is less than 11:6, the shape retention of the powder cosmetic molded product is poor. The powder that forms the basis of powder cosmetic moldings is generally used for cosmetics. ) Powders that can be washed are fine, such as titanium oxide, tartar, kaolin, mica, calcium carbonate, phosphoric acid, zinc white,
11 yen N, navy blue, iron oxide, inorganic powder such as titanium-mica thread bur agent, red No. 202, red No. 204, yellow No. 401υ
・It is an organic dye or pigment such as A color No. 404. ・Any type or two or more types can be selected from among these depending on the required color tone and usability.

- When mixing water-soluble polymers, water-dispersible polymers, and water-swellable substances with the powder that serves as the base, add water or an aqueous solution of alcohol (aliphatic alcohol with 3 or less carbon atoms). All you need to do is knead.The alcohol concentration of the alcohol solution is 9.
0W/W% or more, and furthermore, the nl of the water or alcohol aqueous solution is one or more of the water-soluble water-soluble polymer dispersible polymer and water-swellable substance described in tnJ and the base described in 2. The amount of the water or alcohol aqueous solution is less than 0.05 times h1, particularly preferably 02 to 0.35 times the amount (weight ratio), of the amount of the mixture with the powder. If it exceeds 0.7 times the strength, it will become too thick and difficult to mold.

-J: The alcohol used in the Alfur aqueous solution can include methyl alcohol, ethyl alcohol, propatool, and imbropanol, but if the 6% alcohol is 90 VJ/W% or more, , the caking properties of the base powder and the water-soluble polymer, water-dispersible polymer, and water-swellable substance deteriorate.

A kneaded product of one or more of the above-mentioned water-soluble polymer, water-dispersible polymer, and water-swelling substance, a base powder, and water or an aqueous alcohol solution is molded into a desired three-dimensional shape by a normal molding method. molded into shape. The shape is completely arbitrary, but it may be made of the resin foam described above.

Molding it to fit the shape of the john will make the bond stronger. For example, if the surface of the John is flat, it is preferable that the surface to be adhered to the powder cosmetic paste and John is flat.

” Powdered citrus fruit is molded and then dried to become a product.
As mentioned above, adhesion to the John may be done before or during drying, or after drying is completed. However, the adhesive strength will be higher if you apply an aqueous glue solution to be described later and adhere it to the cushion before drying is completed.)

(The following is a blank space) For the purpose of understanding the present invention, one embodiment of the powder cosmetic molded product of the present invention is shown in FIG. 1. FIG. 1 is a longitudinal sectional view, in which 1 is a molded powder cosmetic product, 2 is a resin foam, and 3 is a support 1. FIG. Naturally, the molded powder cosmetic product or the resin foam may be used, and the support and support may take any other shape. In particular, a container that stores a powder cosmetic molded body with the support as it is,
It doesn't matter if it's packaging.

The resin foam used as the cushion in the present invention may be any resin foamed into open cells. For example, polyethylene, acrylonitrile butadiene rubber, urethane, polyvinyl alcohol, styrene, etc. are foamed into open cells. I can list many things. The effects of the present invention cannot be achieved with resins that have small bubbles or are not foamed.

, l (The shape of the cushion made of the resin foam is arbitrary, but it is preferably a shape that faces the surface to be adhered to the above-mentioned John of the nine types of powder cosmetic molded products, and Similarly, it is preferable to have a relative shape to the support.

In addition, the thickness of the cushion made of the resin foam, the adhesion area between the cushion, the powder cosmetic molded product, and the support, etc. cannot be easily peeled off, and the powder cosmetic may not be easily peeled off when used with a brush or a brush. It goes without saying that the product must be able to withstand practical use, such as not becoming extremely unstable.

'' = made of a resin foam, and a conventional bonding method may be used to bond the tube and the support. The support is usually the bottom surface of the container, but the support may be made of any material such as resin or metal.

The adhesive for adhering the molded powder cosmetic product to the resin foam may be a cellulose derivative such as methylcellulose, hydroxymethylcellulose, carboxymethylcellulose, or hydroxyethylcellulose, alginic acid or its sodium salt, polyvinylpyrrolidone, polyvinyl alcohol, or the like. be. The above glue is used as an aqueous solution, and its concentration is usually selected from the range of 3 to 30 W/W% to ensure sufficient adhesion.

Adhesive strength is weak below 3 W/W%, 30 W/W
%, the aqueous solution loses its fluidity and tends to be difficult to apply.

In addition to the above-mentioned essential ingredients, the powder cosmetic molded product of the present invention includes:
Ingredients commonly included in cosmetics, such as oils, humectants, fragrances, preservatives, drugs, ultraviolet absorbers, and surfactants, can be added as necessary.

Naturally, these must be blended within a qualitative and quantitative range that does not impair the effects of the present invention.

Conventionally, the powder cosmetic molded product of the present invention has a new and beautiful shape and is excellent in usability, but it has not been able to firmly adhere to a support such as a container, and therefore it has been difficult to commercially sell it. It compensates for the above-mentioned drawbacks of molded powder cosmetic products, and can be said to be truly useful.

The present invention will be explained in detail below by way of examples.

The present invention is not limited to these.

Example 1 A powder cosmetic molded product (Habo Beni) having the formulation shown in Table 1) was produced. In other words, thoroughly knead the ingredients in Table 1-1).
Extrude into a molding machine with a two-sided diamond cut shape.

After leaving it for 1 hour, it is taken out from the molding machine, and while it is semi-dry, a few drops of methylcellulose aqueous solution (7 W/W%) is applied to the bottom surface and adhered to a Cushicon (1 mmp) made of open-cell polyurethane foam. 45° as it is
It was dried for C110 hours, and after drying, it was adhered to the inner bottom surface of a hinged container via the other surface of the cushion.

(Table-1) Talc 20
(Weight part) Mica
26 Iron oxide engineering I
tL Blue 1 Red 226 0.5 Titanium-mica thread pearl agent 50 Magnesium aluminum silicate 1.5 Ion exchange water
25 (sweet)
(125) Comparative Example 1 Powder cosmetic molded product adhered to the inner bottom of the container in the same manner as in Example 1, except that single-cell polyurethane was used instead of the open-cell polyurethane foam cushion of Example 1. (Haboku) was obtained.

Comparative Example 2 Vinyl acetate resin adhesive (Cemedine) was used in place of the methylcellulose aqueous solution in Example 1, and the other conditions were as in Example 1.
The molded powder cosmetic product (
Obtained (Habo Beni).

Comparative example 3 A powder cosmetic molded article was obtained which was adhered to the inner bottom of the container.

(The following is a blank space) The tensile strength and drop strength of Example 1 and Comparative Examples 1 to 3 were measured. The results are shown in Table 1-2). The tensile strength is a value measured using a tensile tester manufactured by Toyo Sokki KK, and the drop strength is determined by dropping a closed container upside down onto an iron plate from a height of 1 m to which the molded powder cosmetic product is glued. The number in the table is 10
This is the number of molded powder cosmetics that were dropped and peeled off the surface, resulting in cracks or chips.

(Table-2) Tensile strength (kg/crI) Drop strength C) Example 1 1.92 0/10 Comparative example:
L O,401/10//2
0.04 10/10u 3
0.50 5/10C As is clear from Table 2), the powder cosmetic molded product of the present invention can withstand strong surgical stimulation.

(Left below) Examples 2 to 10 In place of the formulation of the powder cosmetic molded product in (Table-1), Table 1-3
) using the formulation of the powder cosmetic molding, similarly replacing the methylcellulose aqueous solution of Example 1 with the adhesive aqueous solution (Table 3), and replacing the urethane foam with the resin foam of Table 1-3). Using this method, powder cosmetic molded products of Examples 2 to 10 were obtained.

The tensile strength and drop strength of each are shown in Table 1-4).

The numbers in the table are the same as in (Table-2).

(Left below) (Table 4) Tensile strength (kg/c++f) Drop strength (units)
Example 2 1.68 0/10
3 1.70 0/104
zo50/10 5 230 0/106
1.83 0/107 202
0/108 L93
0/109 1.65 0
/1010 1.88
0, /10

[Brief explanation of the drawing]

FIG. 1 is a longitudinal section of a molded powder cosmetic of the present invention. l...Powder cosmetic molded product 2...Made of resin foam, John 3...
・Support Special J'"Applicant Shiseido Co., Ltd. Figure 1

Claims (1)

[Scope of Claims] Powder cosmetic molded product characterized by adhering using a solution and adhering the other side of the cushion to a support (2) fAJI agent aqueous solution cellulose, hydroxymethylcellulose, carboxymethylcellulose , an EO9 adduct of hydroxymethyl cellulose, alginic acid, or their strium salts, polyvinylpyrrolidone, and polyvinyl alcohol. ) The resin foam is a foam of any one of polyethylene, acrylonitrile butadiene rubber, urethane, polyvinyl alcohol, and styrene.
Powder cosmetic molded article according to any one of paragraphs 1) to 2)