JPH0394705A - Coating puff and wiping puff for cosmetic material - Google Patents

Abstract

PURPOSE:To obtain a cosmetic puff with superior touch and superior applying performance and wiping performance of foundation by using a compression body obtained by pressurizing sponge raw material of cellulose group whose density and a mean pore diameter is within a specific range, or a compression hysteres is body in which the volume of the compression body is recovered with an appropriate means as a base material. CONSTITUTION:The density of the sponge raw material of cellulose group is set within a range of 0.01-0.8g/cm<3>, and the mean pore diameter within a range of 0.01-3mm. No high mechanical strength can be obtained in the compression body with the density less than 0.01g/cm<3>, and the compression body with the density over 0.8g/cm<3> is provided with high rigidity and inferior touch. Also, it is hard to manufacture the compression body with the mean pore diameter less than 0.01mm, and the one with the diameter over 3mm is provided with inferior touch and inferior applying and wiping performance for the foundation. The puff uses the compression body obtained by pressurizing the sponge raw material of cellulose group having such density and mean pore diameter with a pressurizing device, or the compression hysteres is body in which the volume of the compression body is recovered with the appropriate means such as heating, etc., as the base material.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a cosmetic application puff and a wiping puff that are pleasant to the touch and have particularly excellent performance during use.

(Prior art and its problems) Cosmetic puffs are divided into two types, application puffs and wiping buffs, according to their intended use.

The former application puff is generally used to apply a solid foundation to the skin, and a sponge-like product made of polyvinyl alcohol foam or polyurethane foam is used. Polyvinyl alcohol foam is excellent in that it provides a cooling sensation when wet with water. However, there is currently a need for further improvement in terms of texture and ease of application.

Next, the latter type of wiping puff is used to cleanse the skin by wiping away applied cosmetics.Recently, disposable puffs are made by covering aggregates of short fibers such as cotton or rayon staples with non-woven fabric. are used. This is preferred because the fibers have the advantage of not remaining easily on the skin. However, since the nonwoven fabric is used as the surface material, that is, the abrasion surface, it has the drawback of being inferior in feel and ease of wiping.

(Problem of the Invention) The present invention solves the above-mentioned problems found in conventional puffs, and provides a cosmetic puff that feels good on the skin and has excellent application and wiping performance for oil-based foundations. The challenge is to (Means for Solving the Problems) As a result of intensive research to solve the above-mentioned problems, the present inventors have found that all of the problems can be solved by using a specific cellulose sponge as the sponge material. They discovered this and completed the present invention.

That is, according to the present invention, the density is 0.01 to 0.8 g/
CD, based on a compressed body obtained by pressing an original cellulose sponge with an average pore diameter of 0.01 to 3 mm with a roll, or a compressed body obtained by appropriately restoring the volume of the compressed body by appropriate means such as humidification. A puff for applying the cosmetic and a puff for wiping the cosmetic are provided.

Furthermore, according to the present invention, from the viewpoint of ease of applying and wiping off oil-based solid foundations, hydrophilic fibers such as rayon and hydrophobic fibers such as polyester are mixed in a weight ratio of 99=1 to 1:99. Provided are cosmetic application puffs and wiping puffs that are based on a cellulose sponge compressed body or compressed history body containing a proportion of the present invention.

In the present invention, the cellulose sponge refers to a sponge made of a material having a cellulose skeleton, and examples include sponges made of senorellose itself, as well as sponges made from cellulose derivatives, such as cellulose ethers, cellulose esters, etc. There are sponges made of these materials or mixtures thereof, which are conventionally known materials. The sponge can also contain various supplements. As such an auxiliary component, reinforcing fibers are preferably used in order to provide the sponge with increased mechanical strength and improved flexibility. Examples of such reinforcing fibers include natural fibers such as ramie hemp, cotton, and kapok;
Examples of such fibers include rayon fibers, polyester fibers, and polypropylene fibers. By using crimped fibers, irregular cross-section fibers, hollow fibers, etc. as reinforcing fibers, it is possible to obtain a sponge with further improved flexibility.

Preferred types of the crimped fibers include, for example, rayon, polypropylene, and polyester fibers. In addition, its crimp rate (JIS
! , 1015 (7, 12.2)) is preferably defined in the range of 10 to 30%. In addition, the fiber length is 5 to 2
It is preferable to set it in the 0H range. The thickness (diameter) of the crimped fibers is generally 0.5 to 15 deniers, preferably 1
~6 denier.

Preferred types of fibers having irregular cross sections include, for example, rayon, polypropylene, and polyester fibers. In this case, an irregular cross section means a cross section with a shape other than a general circle or ellipse, and includes rectangular cross sections such as triangles and squares, but it is preferable to use fibers with a cross section as complex as possible. preferable. In addition, the fiber with this irregular cross section has a crimp ratio of 10
Preferably, it is constructed as crimped fibers having a content of ˜30%.

Preferred types of hollow fibers include, for example, rayon, polypropylene, and polyester fibers. A hollow fiber has one or more hollow portions in its cross section. Fibers with larger hollow areas exhibit better flexibility. Generally, the hollow portions are present in a proportion of at least 2Z, preferably 15 to 50%, in the cross-sectional area of the fiber. Moreover, it is preferable that the cross-sectional shape of the hollow fiber is an irregular cross-sectional shape.

The amount of reinforcing fiber added is 70% by weight η or less, preferably in the range of 10 to 50% by weight, based on the total sponge.

The cellulose sponge in the present invention may contain colorants, antibacterial agents, modifying additives, etc. as other auxiliary ingredients.6 In the present invention, it is particularly preferable to use a sponge containing an antibacterial agent. Furthermore, as the antibacterial agent, silicate particles obtained by ion exchange with antibacterial metal ions (hereinafter also simply referred to as antibacterial silicate) can be used. In this antibacterial silicate, the antibacterial metal ion is
Any metal ion that has excellent antibacterial properties and is less harmful to the human body may be used, but generally at least one metal ion selected from silver ions, copper ions, and zinc ions is used. Furthermore, as the silicate, any silicate can be used as long as it can be ion-exchanged with the antibacterial metal ions mentioned above, and not only crystalline silicates but also amorphous silicates can be used. Examples of such silicates include crystalline aluminosilicates such as various natural zeolites or synthetic zeolites, as well as layered silicates such as smectite, vermiculite, and synthetic zeolites.

In the case of crystalline aluminosilicate, its SiO. /AQ,
The molar ratio of O is 10 or less, preferably 8 or less. Such an aluminosilicate has good ion exchange ability for antibacterial metal ions, and it is possible to obtain an aluminosilicate with a high content of antibacterial metal ions. Silicates usually have an average particle size t/jI1 to 20 Ja. It is preferably used as particles of 2 to 10 microns. Furthermore, in order to ion-exchange silicic acid with antibacterial metal ions, the silicate may be immersed in an aqueous solution containing antibacterial metal ions according to a conventionally known method. This ion exchange treatment can be performed before or after incorporating the silicate into the sponge. By such ion exchange, an antibacterial silicate containing up to about 40% of antibacterial metal ions by weight can be obtained. The content of antibacterial metal ions in the sponge is preferably set within the range of 0.1 to 20 $ by weight.

In addition, as part of the reinforcing fibers, the puff has antibacterial properties.
It can be obtained by using something that has antibacterial properties. Such antibacterial fibers are known. For example, fibers kneaded with antibacterial metal powder (e.g. copper-containing fiber ``Liberte'' manufactured by Teijin TA) or resins kneaded with zeolite are made into fibers and then treated with an antibacterial metal ion solution. There are zeolites that contain antibacterial metal ions inside the zeolite by immersion and ion exchange.

Conventionally known methods can be used to produce the cellulose sponge material. For example, to show an example of manufacturing a viscose sponge, after converting cellulose into alkali senolose using anolekali,
Cellulose xanthate is produced by sulfurization with carbon disulfide, and viscose is obtained by adding sodium hydroxide solution to this. Auxiliary ingredients such as crystalline sulfate and reinforcing fibers are added to and mixed with this viscose, the resulting mixture is shaped into a desired shape, and after being heated and coagulated, it is brought into contact with an acidic aqueous solution to form cellulose. Regenerate, then wash and dry. In this way, a desired sponge can be obtained.

The heating temperature for solidifying the viscose mixture is:
A temperature of 90 to 100°C is generally employed, and the treatment time is about 2 hours. In this case, in order to shorten the heat treatment time, the viscose mixture may be treated with sulfuric acid or sulfuric acid/zinc sulfate in advance during the heat treatment.

The amount of reinforcing fiber added to the viscose is such that the content in the sponge is 10 to 50% by weight.

That is, the amount is 10 to 50 2 by weight relative to the total amount of cellulose and reinforcing fibers in the viscose. In addition, the average particle size of crystalline mirabilite added to viscose is generally 0.
. Questions 01 to 3 are included, and the amount to be added is determined as appropriate depending on the density of the target sponge. If the addition ratio is high, the density of the sponge will decrease and the flexibility will improve, but the strength will decrease. On the other hand, if the proportion of cellulose added is small, the density of the sponge will be high and the strength will be increased, but the flexibility will be decreased. It's weight. The crystalline awn crystals added to the viscose are eluted and removed from the sponge during the subsequent regeneration process and water washing process.

The cellulose sponge material obtained as described above is a porous material having a network structure having a large number of pores communicating with the inside on its surface.

The density of the original fabric used in the present invention is 0.01 to 0.8 g/cd
, more preferably 0.03 to 0.1 g/ad, average pore diameter of 0.01 to 3 cm, more preferably 0.05 to 20
within the range of Compressed bodies with a density of less than 0.01 g/ad have weak mechanical strength and tend to tear easily when used in wet conditions, while those with a density of more than 0.8 g/cd have high rigidity and are particularly poor in texture. There are drawbacks.

It is technically difficult to create a product with an average pore diameter of less than 0.01+++m, and a product larger than 3m has a poor texture even when made into a compressed product, and also has problems with the uniform application of the foundation and the difficulty in wiping it off. It has the disadvantage of being inferior in gender.

The puff of the present invention is a compressed body obtained by using an appropriate pressurizing device from a cellulose sponge material having such density and average pore diameter, or a compressed body obtained by restoring the volume of the compressed body by an appropriate means. It is based on the body. As a compression device, a press hole is most preferable for a strip-shaped raw fabric, but other general compression devices can also be used. A tablet press may also be used.

The compressed body obtained here is a type of buckling phenomenon in which the microstructure of the cellulose sponge is deformed.
This refers to a type of compressed material that does not recover its pre-compression volume even if left alone. For the purpose of the present invention, it is generally preferable to use a compressed body compressed to have a volume of 10 to 50% of the original fabric.

In addition, in the present invention, a compressed hysteresis body obtained by appropriately recovering the volume of the compressed body by rubbing or the like may also be used as a puff base material. Other methods for creating compressed hysterics include placing the compressed body under high humidity or spraying it with a fine mist of water, and these methods are also desirable. When using the compressed body or compressed history body obtained as a base material as a puff for application or a puff for wiping, the puff is moistened with water to restore its volume. Not only does it have extremely improved texture such as flexibility due to a type of buckling, but the abrasive surface fits the skin significantly and gives a pleasant feeling, and the even application and wiping performance of the foundation is significantly improved. This has been improved.

In the present invention, as a special method for improving the uniform applicability and wiping performance of oil-based foundation, so-called hydrophilic fibers such as rayon and nylon and hydrophobic fibers such as polyester fiber, polypropylene fiber, and Kavok are used as reinforcing fibers. It is recommended to use them in combination. The ratio of its use is 99:1 to 1:99 by weight. More preferably 10:90 to 90:10, particularly preferably 3
The range is from 0:70 to 50:50. By setting such a ratio, the hydrophobic cosmetic ingredients and hydrophilic cosmetic ingredients contained in the foundation etc. are absorbed into the puff in an exquisite balance, and exhibit application performance and wiping performance that meet the objectives of the present invention. do.

Note that the shape of the puff of the present invention is not particularly limited, and may be circular, rectangular, or the like. Also, its thickness is usually
The size is 0.1 to 10 mm, preferably 1 to 5 mm, and the size is not particularly limited as long as it is convenient for storage and portability.

(Effects of the Invention) The puff of the present invention not only has a base material with excellent flexibility, but also fits the skin extremely well when wet with water, giving a comfortable feeling. It has a wonderful effect on the ease of applying and wiping off foundation. Such puffs could not be obtained with polyvinyl alcohol-based, polyurethane-based sponges, or other cellulose-based materials. Also, since it is made of cellulose material, it goes without saying that it is hygienic.

Furthermore, puffs using a compressed body and a compressed history body obtained by slightly recovering the volume of the compressed body are not bulky, and are therefore excellent in storage and portability.

(Example) Next, the present invention will be explained in more detail with reference to Examples.

Example 1 Length 5mm as reinforcing fiber. Density 0.0 containing 30 weight $ of 4 denier thick viscose rayon staples
8g/cd, average pore diameter 0.5mm. A raw viscose sponge fabric with a thickness of 5 mm was heated using a press roll at a linear pressure of 30 kg/cm. Roll temperature 100℃, speed 7m/m
A compressed body having a density of 0.40 g/cut was produced.

This compressed body has shape retention properties as it is, and when this compressed body is wetted with a large excess of water, 80% of the compressed volume
It was to be restored.

Next, a test sample for a puff was prepared by punching out this compressed body into a circular shape with a diameter of 50 lllm, and its performance as a puff for applying cosmetics and as a puff for wiping cosmetics was evaluated in order to perform the following. The tests shown were conducted. The results are shown in Table-1.

(Texture when absorbing water) The texture of the test specimen upon water absorption was evaluated by sensory evaluation.

(Applicability of Foundation) The transferability of the solid foundation to the water-absorbed test object and the feel of the transferred foundation on the skin (good adhesion) were sensory evaluated.

(Wipeability) A water-soluble cleansing lotion (commercially available product) was applied to the test object, and an oil-based cleansing lotion was applied to the water-absorbed test object, and the ability to wipe off dirt such as foundation that had adhered to the skin was sensory evaluated.

The symbols shown in Table 1 have the following meanings. ◎・
...Very good ○...Good Δ...Slightly poor ×...Poor Example 2 Regarding the wiping puff using the compressed cellulose sponge base material of Example 1, this product was used as it was without absorbing water. When used as a puff to wipe cosmetics (water-soluble cleansing lotion) from the skin, the cosmetics could be efficiently wiped off without leaving any fibers on the skin and without deforming the shape of the puff. It also felt good.

Example 3 A sample of the compressed cellulose sponge base material of Example I (density: 0.30 g/at?, volume recovery rate when wet with large excess water: 75% of the volume before compression) was similarly puffed. It was prepared and tested. The results are shown in Table 2. Example 4 A sample (density: 0.16 g/ali, large excess Puffs with a volume recovery rate when wet with water (volume before compression of 8 oz) were prepared in the same manner and subjected to the test. The results are shown in Table 2. Examples 5 to 7 The amount of reinforcing fibers was 30%, consisting of 70 parts by weight of viscose rayon fibers with a length of 5 g + 4 denier and 30 parts by weight of polyester fibers with a length of 5 III and a thickness of 5 denier.
Containing density 0.05g/cm3, average pore diameter 1mm
Example 1
Press loin was pressed under the same conditions and the density was 0.
A compressed body of 35 g/d was obtained. A sample prepared using this compressed body (Example 5), a sample prepared using the same compressed body sample in the same manner as in Example 3 (density: 0.30 g/a7, volume recovery rate when wet with large excess water: compressed body 75% of the preproduct) (Example 6)
And the same compressed body sample was treated in the same manner as in Example 4 (density: 0.16 g/ad, volume recovery rate when wet with large excess water: 80% of the volume before compression) (Example 7) was subjected to the same test. provided. The results are shown in Table-2.

Claims (2)

[Claims] (1) A compressed body obtained by pressing a raw cellulose sponge with a density of 0.01 to 0.8 g/cm^3 and an average pore diameter of 0.01 to 3 mm with a roll, or the compressed body is subjected to humidification, etc. A puff for application and a puff for wiping off cosmetics, each of which uses a compressed history body whose volume has been appropriately restored by an appropriate means as a base material. (2) Cellulose sponge contains hydrophilic fibers such as rayon and hydrophobic fibers such as polyester in a ratio of 99:1 to 1:9.
The puff according to claim 1, comprising a weight ratio of 9.