JPS5812645Y2 - Cosmetic applicator material - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a cosmetic applicator.

In recent years, with the development of cosmetics, the applicators used for them have changed significantly, and various improvements have been made in terms of materials, shapes, etc.

Especially for makeup cosmetics, there has been a recent shift from brush-like applicators made of hair or feathers to porous materials such as polyurethane or rubber foams, and nonwoven fabrics made from nylon or polyester fibers. It is increasing noticeably.

It can be assumed that this is because these porous materials have the advantage of being able to be coated over and over again with cosmetics because they contain pigments and the like, and because the materials have an elastic function that gives them a good feeling of use.

However, even with these porous materials, some people still complain of a tingling or stiff feeling in thin skin areas such as the edges of the eyes and lips, and there is a strong desire for improvements to the current porous material applicators. The reality is that there are.

In particular, if the applicator is highly irritating when applying makeup to areas with thin skin, this may cause skin disorders.

In such a state, the result will be completely contrary to the original purpose of makeup.

The present invention was devised in view of these backgrounds, and its purpose is to eliminate the drawbacks of the current applicators made of porous materials and to provide an extremely safe cosmetic applicator material.

Another object of the present invention is to provide an applicator material that has a soft touch similar to that of the human skin in terms of usability during application.

That is, it is generally said that the best feeling when applying makeup is the feeling from the fingertips.

A feature of the present invention for achieving the above object is that a polyamino acid resin layer is provided on the surface of the skeleton of a porous material having air permeability.

Initially, the inventor made various studies to round the exposed skeleton corners of the porous material itself by alkali treatment or organic solvent treatment, but although the rounding effect was achieved, the material skeleton deteriorated (
It became thin and brittle) and became unsuitable for practical use.

Next, the inventor formed a resin layer on the surface of the skeleton of the porous body using various synthetic resin liquids, but although some effects were achieved, the result was not perfect in terms of softness during application.

However, it has been found that the polyamino acid resin film solves the above-mentioned problems and is extremely soft, providing a good feeling of use close to that of the human skin.

The applicator according to the present invention will be described in detail below with reference to the embodiment shown in the figure.The applicator can be made of foams such as polyurethane foam, natural rubber, acrylonitrile butadiene rubber, or elastic porous materials such as nonwoven fabrics made of nylon or polyester. A coating layer 2 is formed on the porous skeleton 1 using a polyamino acid resin solution.

At this time, spray coating or dip coating may be used, and it is desirable to perform the coating treatment so as not to seal the gaps 3 of the porous material skeleton 1 as much as possible so as not to change the texture.

Examples of polyamino acid resins include Ajinomoto Co., Ltd.'s Ajuto type, and Kyowa Hakko Co., Ltd.'s polyamino acid resin lacquer type.

The creators' experiments have shown that the tingling, stiff, or irritating sensation of porous materials is due to the fact that the skeleton of the material is extremely sharply exposed during cutting, polishing, and punching during the processing process, and the tip of the material Corner 4 was found to be the greatest cause of skin irritation.

Furthermore, disposing the coating layer 2 on the tip corners 4 of these materials using a flexible resin material such as polyamino acid resin is extremely effective due to the film-forming effect of the coating agent, that is, the phenomenon that the coating corners 5 are always formed rounded. Finished as something.

Moreover, it is already obvious that polyamino acid resin has the feel of animal leather, and forming a film on the surface of the cosmetic applicator material with this property is useful in terms of usability during application. This means that something extremely effective has been obtained.

As described above, the present invention has improved the conventional problems by coating the porous material skeleton, and has created an applicator that is extremely comfortable to use and highly safe.

Another advantage of this invention is that by applying polyamino acid and resin coating (dip coating) to acrylonitrile butadiene rubber foam, etc., which has high dye adsorption properties, it has become possible to obtain an anti-staining effect and to create an applicator material that is resistant to staining. Moreover, by placing a highly oil-resistant resin layer on the material skeleton, it has been completed as an applicator material that has many advantages, such as the ability to protect the material and greatly improve the durability of the applicator. It has great potential to contribute to the industry in terms of safety and functionality.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a cosmetic applicator and a partially enlarged cross-sectional view on one side, and FIG. 2 is a cross-sectional view of another embodiment, with a partially enlarged cross-sectional view on one side. 1...Porous material skeleton part, 2...Polyamino acid resin coating, 3...Gap part, 4
... Material tip corner, 5... Coating corner.

Claims (1)

[Scope of utility model registration request] A cosmetic applicator material characterized by having a polyamino acid resin layer formed on the surface of a porous material having air permeability.