JPH07136017A - Cosmetic puff - Google Patents

Abstract

PURPOSE:To provide a cosmetic puff having excellent setting resistance and elastic recovery when it is wet. CONSTITUTION:This cosmetic puff is constituted of an absorbing layer and a surface material or only the absorbing layer, and the absorbing layer contains combined fibers of 20wt.% or above having stereoscopic crimps. The cosmetic puff is not settled when it is impregnated with a lotion or the like, and an excellent using feeling is maintained in use.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cosmetic puff which exhibits excellent sag resistance and elastic recovery when wet.

[0002]

2. Description of the Related Art Makeup puffs are used for applying lotion, milky lotion and the like, and for wiping off cleansing agents, nail polish and the like, and most of them are disposable. Generally, a makeup puff is configured by covering an absorbent layer that absorbs and retains lotion with a surface material such as a non-woven fabric. Of these, water-absorbent fibers such as rayon and cotton are widely used as materials for the absorbent layer. However, although the makeup puffs using rayon or cotton show excellent water absorption, the problem that the bulk does not come out when water is absorbed, that is, it is easy to get tired, and the puff becomes hard because the bulk is not recovered once it is pressed against the skin. There was a problem that the usability was lost.

In particular, recently, many cosmetic puffs in which the puff is impregnated with a lotion or a cleansing agent in advance have been sold. Many of these are individually packaged and attempt to apply or cleanse the lotion with a single puff, so things that set or harden during use are acceptable to consumers. First, it is desirable that the feeling of use is not impaired even if it is repeatedly pressed against the skin while applying the lotion.

Therefore, in order to solve such a problem, Japanese Unexamined Patent Publication No. Sho.
In 0-88177, it is proposed to use polyester crimped fibers as a decorative puff material. In this publication, it is stated that, when polyester fibers to which silicic acid anhydride particles are fixed and crimped by a usual method are used for a cosmetic puff, there is no sag even when wet, and elasticity is not impaired. There is.

[0005]

However, the polyester fiber of JP-A-60-88177 is a so-called planar crimp provided by a conventional method.
The sag resistance when wet is insufficient, and the elastic recovery after being pressed against the skin is not satisfactory at all.

[0006] Therefore, the present inventors have shown that water absorption and water retention are not impaired, they have excellent settling resistance when wet, and that they exhibit a good elastic recovery even after being pressed against the skin, and are completed from the start of use. As a result of intensive studies to obtain a makeup puff that maintains an excellent feeling of use, the present invention has been achieved.

[0007]

The present invention is a cosmetic puff whose absorbent layer contains 20% by weight or more of a composite fiber having a three-dimensional crimp (hereinafter abbreviated as a three-dimensional crimp fiber).

The three-dimensional crimped fiber in the present invention means a composite fiber having a spiral three-dimensional crimp without a treatment for expressing crimps, or a spiral crimped by heat treatment or the like. A composite fiber that expresses As such a three-dimensional crimped fiber, Japanese Patent Laid-Open No. 2-539
16, JP-A-2-191716, JP-A-3-161
Examples thereof include polyester-based composite fibers and polyolefin-based composite fibers as shown in No. 519 and the like, and in the present invention, these may be used alone or in combination. The three-dimensional crimp only needs to be developed when it is made into a makeup puff, and the composite fiber having the three-dimensional crimp can be used as it is without any special treatment. In addition, the composite fiber in which crimps are developed by heat treatment or the like can be crimped by developing the crimps by heat treatment or the like, or by forming the web and then performing heat treatment or the like. When these three-dimensional crimped fibers are used in the cosmetic puff of the present invention, the number of crimps is preferably 8 or more per inch, more preferably 10
That is all. If it is less than 8, sufficient sag resistance and elastic recovery cannot be exhibited. Further, these fibers may develop crimps of 30 to 40 when subjected to the expression treatment, but they can also be preferably used.

In the present invention, a particularly preferred three-dimensional crimped fiber contains polypropylene as a component and comprises an ethylene-propylene random copolymer and / or ethylene-butene-
An eccentric core-sheath composite fiber or a dorso-ventral composite fiber containing a propylene terpolymer as another component. Since this composite fiber is composed of a hydrophobic polyolefin, it has excellent sag resistance even when wet, and since it exhibits good crimp expression, it can be preferably used. Since this composite fiber has a good crimp-developing property, it develops a three-dimensional crimp without any special treatment. Therefore, in the present invention, it can be used as it is, or it can be subjected to heat treatment to further develop crimps to obtain a cosmetic puff having more excellent sag resistance and elastic recovery. When used in the absorbent layer of a makeup puff, its fineness is preferably 1.5 to 5 denier. This is because if it is within this range, three-dimensional crimping is likely to occur.

In the present invention, the proportion of the three-dimensionally crimped fibers in the entire absorbent layer may be 20% by weight or more, preferably 30 to 70% by weight, more preferably 40 to 60% by weight. If it is less than 20% by weight, sufficient sag resistance and elastic recovery cannot be obtained when wet. As the proportion of the three-dimensional crimped fiber increases, the sag resistance and elastic recovery are improved, and the porosity is also increased, so that the water retention property is also improved. However, when it exceeds 70% by weight, lotion and the like are evenly absorbed. On the other hand, when applying the lotion, the face may be sticky or not evenly applied, which is not preferable.

If the three-dimensional crimped fiber is contained in the above range, various other fibers can be mixed. Examples of the fibers to be mixed include natural fibers such as cotton, synthetic fibers such as polyester and polypropylene, and recycled fibers such as rayon and cupra, and they may be used alone or in combination. Among them, water-absorbent fibers such as cotton and rayon can be preferably used because they can quickly absorb lotion and the like into the absorbent layer. In particular, rayon is most preferably used because it exhibits excellent water absorption and can be stably obtained.

When the three-dimensional crimped fiber and rayon are mixed to form an absorbent layer, it is possible to use a web obtained by mixing both of them and forming a web with a parallel card or the like, and separately forming both webs and laminating them. The material may be used as the absorption layer.

The basis weight of the absorbent layer can be determined according to the use, etc., but in a general makeup puff, it is 30 to 50 g / m ^2.
Is. Then, the absorbent puff can be obtained by coating the absorbent layer with a non-woven fabric or the like, or by pressing.

[0014]

In the present invention, the three-dimensional crimped fiber has a three-dimensional spiral crimp, so that it suppresses the settling of the makeup puff when wet and restores the bulk when pressed against the skin. Contribute to. Further, since the three-dimensional crimped fiber increases the void ratio of the web by the crimping, the three-dimensional crimped fiber also contributes to the improvement of the water retention property of the cosmetic puff. Further, the water absorbing fibers such as rayon mixed with the three-dimensional crimped fibers have a function of quickly and uniformly permeating and retaining the lotion into the absorbent layer.

[0015]

EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to the following examples. Further, in the examples, unless otherwise specified,% means% by weight.

[Examples 1 to 3] Dorso-ventral composite fibers containing polypropylene as one component and ethylene-propylene random copolymer as another component (hereinafter abbreviated as CPP fibers).
Was manufactured according to the method described in JP-A-2-191720 to obtain a staple fiber having a fineness of 3 denier, a fiber length of 51 mm, and a number of three-dimensional crimps per inch of 17. The mixing ratio of this CPP fiber is 30% and 5 respectively.
CPP fiber and rayon (3 denier, 51 mm) were mixed so as to be 0% and 70%, and this was passed through a parallel card twice to form a card web of 40 g / m ² and then, as in Examples 1, 2 and 3. did.

[Example 4] 3 denier, 51 mm CP
Heat P fiber at 120 ° C for 10 minutes to 4 per inch
0 dimensional crimps were developed, and the mixing ratio was 30%.
Example 3 was mixed with rayon (3 denier, 51 mm) so that a card web having a basis weight of 40 g / m ² was prepared in the same manner as in Examples 1 to 3.

[Comparative Example 1] A card web having a basis weight of 40 g / m ² was prepared in the same manner as in the above-mentioned example by using only the 3 denier and 51 mm rayon used in the above-mentioned example. And

Comparative Example 2 CP used in Examples 1 to 3
P fiber was mixed with rayon (3 denier, 51 mm) so that the mixing ratio was 10%, and a card web having a basis weight of 40 g / m ² was prepared in the same manner as in the above-mentioned example. And

Comparative Example 3 3 denier, 51 mm CP
Heat P fiber at 120 ° C for 10 minutes to 4 per inch
The number of three-dimensional crimps is expressed, and the mixing ratio is 10%.
Was mixed with rayon (3 denier, 51 mm) so that a card web having a basis weight of 40 g / m ² was prepared in the same manner as in the above-mentioned example, which was designated as Comparative Example 3.

[Comparative Examples 4 and 5] Polypropylene fibers of 3 denier and 51 mm were mixed with rayon so that the mixing ratio was 30% and 50%, and a card web was prepared in the same manner as in the above Examples. And Comparative Examples 4 and 5.

[Comparative Examples 6 and 7] 3 denier, 38 mm polyester fiber was mixed with rayon so that the mixing ratio was 30% and 50%, and a card web was prepared in the same manner as in the above Examples. Comparative examples 6 and 7 were used.

With respect to the above Examples and Comparative Examples, water retention, sag resistance (bulk height) when wet, elastic recovery when wet, and water discharge rate were evaluated. The results are shown in Tables 1 and 2.

[0024]

[Table 1]

[0025]

[Table 2]

[Examples 5 to 7] The CPP fibers used in Examples 1 to 3 were mixed with rayon (3 denier, 51 mm) so that the mixing ratio was 50%, and the areal weight was 10 or 2.
Card webs of 0,33 g / m ² were prepared in the same manner as in the above Examples, and were designated as Examples 5, 6, and 7.

[Examples 8 to 10] The CPP fibers used in Examples 1 to 3 were mixed with rayon (3 denier, 51 mm) so that the mixing ratio was 70%, and the basis weight was 10,
Card webs of ²⁰ , 36 g / m ² were prepared in the same manner as in the above-mentioned Examples, and were designated as Examples 8, 9, and 10.

[Comparative Example 8] A web having a basis weight of 35 g / m ² was prepared in the same manner as in the above Example using only 3 denier and 51 mm rayon, and this was designated as Comparative Example 8.

The webs of Examples 5 to 10 and Comparative Example 8 were evaluated for water retention and water discharge rate. The results are shown in Table 3.

[0030]

[Table 3]

Here, the water retention amount in Tables 1 to 3 was measured as follows. First, an acrylic resin plate was used to prepare a 5 cm × 5 cm prismatic container having an open top. Then, one of the four side surfaces was made detachable to facilitate the loading and unloading of the sample, and five small holes were provided in the lower bottom part to drain water, and this was used as a measuring container. Further, a thin acrylic plate provided with four small holes was used as a lid. 10cm of web cut into 5cm x 5cm in this container
Put a stack of them, put a lid on it and gently 100
g of water was poured, and the water leaking from the small holes at the bottom of the container was stored in a beaker and allowed to stand. After standing for 5 minutes, the amount of leaked water was measured, and the amount of water obtained by subtracting the amount of leaked water from the amount of water initially injected was taken as the water retention amount of the web. Here, the water retention amount per 1 g of the web is calculated.

The sag resistance when wet was evaluated as follows. After measuring the bulk of the web in the state of not absorbing water, wet the web in the same manner as the measurement of the water retention amount, place a weight of 10 g, 20 g, 30 g, 50 g, 80 g and leave it for 5 minutes. Was measured through the container. Then, the reduction rate of the bulk was calculated from the difference in the bulk of the web before and after water absorption, and the sag resistance was evaluated by this.

The elastic recovery was evaluated as follows. After measuring the bulk of the web when there is no load by the method described above,
A 100 g weight was placed on the lid and left for 30 seconds.
Subsequently, the weight was removed, and the volume was measured after the weight was left for another 5 minutes. The elastic recovery rate was calculated from the difference in the bulk of the web before and after the weight was placed to evaluate the elastic recovery.

The water discharge rate was calculated by measuring the amount of water released in the web when a constant load was applied. First, after measuring the water retention amount by the above method, a 100 g weight was further placed and left for 5 minutes to measure the water discharge amount, and this water discharge amount was divided by the previous water retention amount to calculate the water discharge rate.

[0035]

The cosmetic puff of the present invention contains the composite fiber having a three-dimensional crimp in the absorbent layer, and therefore has a better settling resistance when wet compared to the conventional one using rayon or synthetic fiber. And elastic recovery. Therefore, even when it is impregnated with lotion or the like, it can be used comfortably from the start to the end of use.

Further, the water retention rate increases as the mixing ratio of the three-dimensional crimped fibers increases, but there is no difference in the water discharge rate regardless of the mixing ratio of the three-dimensional crimped fibers, and the water retention rate is almost the same as that of a web made only of rayon. is there. That is, it can be said that the makeup puff of the present invention can release a certain amount of lotion when pressed against the skin regardless of the amount of water retention. Therefore, according to the present invention, it is very economical to obtain a cosmetic puff that is bulky even if the absorbent layer has a low basis weight and has good water retention.
Further, in the case of a makeup puff that is pre-impregnated with a lotion or the like, according to the present invention, not only a good feeling of use is maintained during use, but also water retention is good even with a low basis weight, so a compact makeup Puffs can be provided.

Claims (3)

[Claims] 1. A cosmetic puff consisting of an absorbent layer and a surface material or an absorbent layer only, wherein the absorbent layer contains 20% by weight or more of a composite fiber having a three-dimensional crimp. 2. In a decorative puff consisting of an absorbent layer and a surface material, or an absorbent layer only, the absorbent layer comprises 30 to 70% by weight of a composite fiber having a three-dimensional crimp and 70 to 3 of rayon.
A cosmetic puff containing 0% by weight and being mixed and / or laminated. 3. An eccentric core-sheath in which a composite fiber having a three-dimensional crimp has polypropylene as one component and an ethylene-propylene random copolymer and / or an ethylene-butene-propylene terpolymer as another component. It is a composite fiber or a dorso-ventral composite fiber.
Makeup puff.