JP2002142856A - Skin touch article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a skin touch article which gives the skin good touch feeling and hygroscopicity. SOLUTION: This is a skin touch article used by touching on the skin. Micropowder of a natural organic substance is adhered to at least a part touching on the skin directly. For instance, when the skin touch article is a sanitary product 1 with a surface member 11 directly touching on the skin and an absorptive body 12 covered by the surface member 11, the substrate for the surface member 11 is treated by a treating agent and micropowder of the natural organic substance with average particle diameter not higher than 30 μm is adhered. The treating agent is composed of micropowder of the natural organic substance and at least one disperse medium selected from water, an organic solvent, resin emulsion, and resin solution. Thus hygroscopicity and touch feeling of the surface member directly touching on the skin are improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a skin contact product used in contact with the skin.

[0002]

2. Description of the Related Art Sanitary products used by applying to the skin, such as disposable diapers and sanitary products, include, for example, an absorber for retaining a liquid, and a surface material that is laminated on one surface of the absorber and directly touches the skin. And a waterproof sheet laminated on the other surface of the absorber to prevent the liquid from seeping out from the absorber.

[0003] Synthetic fibers, non-woven fabrics and the like are widely used as the base material of the surface material of the sanitary article. In recent years, the properties required for surface materials include water permeability, cleanliness, and difficulty in breaking human movements to quickly guide excrement to the absorber. ,
A nonwoven fabric made of polypropylene, polyester, polyethylene, or the like is used. Similar to such sanitary articles, examples of skin contact articles used in contact with the skin include dust paper, wet tissue, and other cosmetic tools used for applying makeup, specifically, cosmetic puffs and disposable puffs. Puffs, makeup brushes, sponges, etc.

[0004]

Since such a skin contact product is used by directly touching or rubbing it on the skin, a product having an excellent touch feeling (feel) has long been desired. . In particular, materials such as polypropylene, polyethylene, and polyester used for the surface materials of sanitary goods have a poor touch (feel) and are not hygroscopic, causing stuffiness. It created discomfort.

[0005] It is an object of the present invention to provide a skin contact product that provides good touch feeling and moisture absorption.

[0006]

SUMMARY OF THE INVENTION The present invention is a skin contact product used in contact with the skin, wherein at least a portion of the skin contact product directly contacting the skin has a natural organic fine powder attached thereto. And

[0007] Here, the skin contact products include dust paper, wet tissues, masks, gauze, and the like, in addition to the sanitary products and makeup tools described below. The natural organic material is, for example, silk, collagen, cellulose, chitin, chitosan, wool, hemp, cotton, sponge powder, whey, and the like,
Any one or more of these can be selected and used.
By pulverizing such a natural organic material raw material by, for example, mechanically pulverizing it, the fine natural organic substance powder is obtained.

[0008] The adhesion of the natural organic fine powder is performed by dispersing the natural organic fine powder in a water-soluble polymer, an aqueous resin such as a resin emulsion, an organic solvent such as alcohol, or a solvent such as water, and applying the resultant. Can be performed. These aqueous resins and solvents may be used alone or as a mixture.

As a substrate to which the fine powder of natural organic matter is adhered, that is, a substrate constituting at least a portion of the skin contact article which is in direct contact with the skin, fibers such as synthetic fibers and natural fibers, and these fibers are used. Nonwoven fabrics, woven fabrics, knitted fabrics and the like, synthetic resin films, and the like can be used. As the synthetic fibers, for example, polypropylene, polyester,
Polyethylene or the like can be used, and as the natural fiber, for example, silk, cotton, or the like can be used.

As the synthetic resin film, for example,
A polyethylene film, a polypropylene film, a polyester film, or the like can be used. Such a substrate may be subjected to a hydrophilic treatment, a water-repellent treatment, a softening treatment, an embossing treatment, a perforation treatment, or the like.

[0011] The skin contact article is a sanitary article to be used by contacting the skin, and has a surface material that comes into direct contact with the skin and, if necessary, an absorber covered with the surface material. In this case, it is preferable that the surface material is constituted by a substrate to which the natural organic substance fine powder is adhered. The sanitary article is used in a state of being applied to the skin for a predetermined time, for example, a disposable diaper, a diaper liner,
Sanitary products and the like are included. Many of these have an absorber covered by a facing.

Further, the skin contact article may be a cosmetic tool used for makeup. Here, the makeup tools include, for example, puffs, sponges, makeup brushes, face masks, and the like. The puffs include various makeup puffs for applying cosmetics, and disposable puffs such as silk puffs, cotton puffs, rayon puffs, and the like. Is included.

The average particle size of the natural organic fine powder is preferably 30 μm or less. That is, if the average particle size exceeds 30 μm, it may be difficult to adhere to the base material, and a rough feeling may be caused. In order to further enhance the adhesion to the substrate, the average particle size of the fine natural organic substance powder is preferably 10 μm or less. The lower limit of the average particle size of the fine powder of natural organic matter is 0.1.
It is preferably at least 1 μm, more preferably 1 μm.
μm or more. That is, when the average particle size is less than 1 μm, the handleability may be deteriorated, and it may be troublesome to pulverize the natural organic material, which may increase the cost.

The natural organic substance fine powder is adhered by treating with a treating agent containing the natural organic substance fine powder, and the treating agent comprises water, an organic solvent, resin Desirably, it is composed of at least one kind of dispersion medium selected from an emulsion and an aqueous resin solution. Since a natural organic substance is dispersed in such a treating agent, a fine powder of the natural organic substance can be uniformly attached by treating with the treating agent.

As the resin emulsion, for example,
A synthetic resin-based emulsion such as a silicone-based, polyurethane-based, polyacryl-based, fluorine-based, polyvinyl alcohol-based, and carboxymethylcellulose-based emulsion can be used, and a natural resin-based emulsion can also be used. Also,
As the aqueous resin solution, for example, a synthetic resin aqueous solution using a polyvinyl alcohol-based or carboxymethyl cellulose-based synthetic water-soluble polymer can be used, and natural resin-based collagen, gelatin, sodium alginate, natural water-soluble natural gums and the like can be used. A natural resin aqueous solution using a polymer can also be employed.

[0016] If necessary, a surfactant may be added to the treating agent to improve the dispersibility of the fine powder of natural organic matter. As the surfactant, for example, an anionic or cationic ionic surfactant, or a nonionic surfactant such as a polyethylene oxide derivative or a sucrose fatty acid ester can be used.

Further, a thickener for preventing sedimentation of the fine natural organic substance powder may be blended in the treating agent. Examples of the thickener include cellulose derivatives such as methylcellulose and hydroxyethylcellulose, various gums, and natural polymer thickeners such as pectin, sodium alginate, dextrin, agar, and gelatin.

The treatment with the treating agent is performed, for example, by subjecting the treating agent to a gravure coating method, a spray method, a pad method (impregnation,
It can be carried out by coating by dipping or the like and drying. Note that post-treatments such as embossing may be performed after the treatment agent application step and the drying step.

The content of the fine natural organic substance in the treating agent is preferably 0.5 to 50% by weight. That is, if the content of the natural organic substance fine powder is less than 0.5 wt%, a good touch feeling and sufficient hygroscopicity may not be obtained, and if it exceeds 50 wt%, the viscosity increases and becomes uneven, that is, There is a danger of becoming limp.

Further, when a resin emulsion or an aqueous resin solution is employed as the dispersion medium, the solid content of the resin in the treating agent is desirably 0.5 to 20% by weight. That is, since the resin serves as a binder for fixing the natural organic substance fine powder to the base material, the natural organic substance fine powder can be firmly adhered to the base material via the resin. If the resin solid content is less than 0.5 wt%, the resin may not be able to obtain a sufficient effect of attaching the natural organic fine powder to the base material. If the resin solid content is more than 20 wt%, the excellent effect obtained by the natural organic fine powder may be obtained. There is a possibility that the touch feeling and the hygroscopicity cannot be obtained.

[0021] On the other hand, the present invention relates to a skin contact product to be used in contact with the skin, wherein at least a part of the skin which comes into direct contact with the skin is treated with a treating agent so that the fine powder of natural organic matter adheres to the skin. The treatment agent has an average particle size of 30.
μm or less of the natural organic matter fine powder, and a resin emulsion for dispersing the natural organic matter fine powder or one of an aqueous resin solution, the content of the natural organic matter fine powder in the treatment agent is , 0.5-50 wt%
The solid content of the resin in the treating agent is 0.5 to 20 wt.
%.

In this case, the skin contact article may be a sanitary article to be used by contacting the skin. If the sanitary article has a surface material to be brought into direct contact with the skin, the surface material may be: It is preferable that the substrate be made of a substrate to which the natural organic fine powder is adhered. Alternatively, the skin contact article may be a cosmetic tool used for makeup.

[0023]

Embodiments of the present invention will be described below with reference to the drawings. First Embodiment FIG. 1 shows a sanitary article 1 as a skin contact article of the first embodiment. This sanitary article 1
Is a material to be used against the skin, for example, a disposable diaper, a surface material 11 that directly contacts the skin, an absorber 12 for absorbing and holding a liquid, and a waterproof sheet 13 for preventing leakage. Is configured.

The surface of the absorber 12 on the skin side is covered with a surface material 11 so as to absorb liquid through the surface material 11. The surface material 11 is composed of a base material to which natural organic fine powder is adhered, and is obtained by treating the base material with a processing agent containing natural organic fine powder.

This treating agent is obtained by adding a natural organic fine powder having an average particle size of 30 μm or less to at least one kind of dispersion medium selected from water, an organic solvent, a resin emulsion, and a resin aqueous solution. It can be prepared by adding so as to be 0.5 to 50% by weight, stirring and dispersing. Also,
When a resin emulsion or an aqueous resin solution is used as the dispersion medium, the treating agent is prepared so that the resin solid content in the treating agent is 0.5 to 20% by weight. The surface material 11 for sanitary ware of this embodiment is obtained by applying a fine powder of natural organic matter by applying the treating agent to a base material and drying it.

[Second Embodiment] FIG. 2 shows a disposable cotton puff 2 as a skin contact product of the second embodiment. The cotton puff 2 is a makeup tool used for makeup, and includes a batting 21 and a surface material 2 covering the batting 21.
2, so that the surface material 22 is used in direct contact with the skin.

The surface material 22 is formed by adhering a fine powder of a natural organic substance to a base material made of cotton, as in the first embodiment. That is, the surface material 22 of the present embodiment is obtained by treating the base material using the same treatment agent as in the first embodiment. In each of the above-described embodiments, the skin-contact article having the surface material, that is, the sanitary article 1 and the cotton puff 2 has been described. Is not limited to the structure in which is coated with a surface material.

That is, the present invention may be applied to, for example, a cosmetic brush which is a cosmetic tool. In this case, the hair which is in contact with the skin is treated with the above-mentioned treating agent to thereby provide a natural brush. Organic matter may be attached. Further, in the case of a face mask which is a cosmetic tool, at least a surface of a substrate made of a nonwoven fabric or the like that comes into contact with the skin is subjected to the treatment with the treatment material described above so that a natural organic substance is attached to the substrate.
A face mask with an excellent touch feeling can be obtained.

Then, the above-mentioned treatment may be applied to the nonwoven fabric or the synthetic resin film constituting the surface material of the sanitary article, which is a sanitary article, so that a natural organic substance may be adhered. Further, a dust-contact paper or a wet tissue, which is a skin contact product, can be constituted by attaching a natural organic substance to a fiber sheet such as paper as a base material.

[0030]

[Example 1] In the first embodiment, polyvinyl alcohol [Povar 117] was used as a dispersion medium.
(Trade name) manufactured by Kuraray Co., Ltd.], and using a synthetic resin aqueous solution in which water is used. Silk powder having an average particle size of 5 μm is used as a natural organic fine powder, and the silk powder is mixed with the synthetic resin aqueous solution. After sufficient dispersion, the treating agent of this example was obtained.

The content of each component in the treating agent is as follows:
Silk powder 10 wt%, water 85 wt%, polyvinyl alcohol 5 wt%. Further, a polypropylene non-woven fabric was used as a base material, and the treating agent was applied to the polypropylene non-woven fabric by a gravure processing machine so as to have a basis weight of 5 g / m ^2. The surface material for sanitary articles of the example was obtained.

Example 2 A processing agent was prepared in the same manner as in Example 1 except that the natural organic fine powder in Example 1 was replaced with collagen powder (average particle size: 4 μm). Example surface materials for sanitary goods were obtained. Example 3 A treating agent was prepared in the same manner as in Example 1 except that the natural organic fine powder in Example 1 was replaced with cellulose powder (average particle size: 6 μm). A surface material for articles was obtained.

Example 4 A treating agent was prepared in the same manner as in Example 1 except that the fine powder of natural organic matter in Example 1 was replaced with chitin powder (average particle size: 5 μm). Example surface materials for sanitary goods were obtained. Example 5 A treating agent was prepared in the same manner as in Example 1 except that the natural organic fine powder in Example 1 was replaced with chitosan powder (average particle size: 5 μm). A surface material for articles was obtained.

Example 6 The dispersion medium in Example 1 was
CL coat 5400 (trade name, manufactured by Kyoeisha Chemical Co., Ltd.) was dispersed in water to prepare a synthetic resin emulsion, a treatment agent was prepared in the same manner as in Example 1, and a surface material for sanitary goods was obtained.
The content ratio of each component in the treatment agent was 10% by weight of silk powder, 60% by weight of water, and 30% by weight of CL coat 5400 (trade name). The resin solid content of the used CL coat 5400 is about 20% by weight, whereby the resin solid content in the treatment agent is about 6%.

Example 7 A treating agent was prepared in the same manner as in Example 6 except that the natural organic fine powder in Example 6 was replaced with wool powder (average particle size: 5 μm). Example surface materials for sanitary goods were obtained. Example 8 A treating agent was prepared in the same manner as in Example 6 except that the natural organic fine powder in Example 6 was replaced with hemp powder (average particle size: 5 μm). A surface material for sanitary goods was obtained.

Example 9 A treating agent was prepared in the same manner as in Example 6 except that the natural organic fine powder in Example 6 was replaced with cotton powder (average particle size: 4 μm). Example surface materials for sanitary goods were obtained. Example 10 A processing agent was prepared in the same manner as in Example 1 except that the dispersion medium in Example 1 was changed to water, and polyethylene glycol ether as a surfactant was added to the water.
Using this treating agent, a surface material for sanitary articles of this example was obtained. The content ratio of each component in the treatment agent was 10% by weight of silk powder, 89.5% by weight of water, and 0.5% by weight of polyethylene glycol ether.

Comparative Example 1 A processing agent was prepared in the same manner as in Example 1 except that the natural organic fine powder in Example 1 was replaced with collagen powder (average particle size 35 μm). Example surface materials for sanitary goods were obtained. [Comparative Example 2] The content ratio of each component in the treating agent in Example 1 was 0.1 wt% of silk powder, 99.4 wt% of water,
A treating agent was prepared in the same manner as in Example 1 with 0.5 wt% of polyvinyl alcohol, and a surface material for sanitary goods of this comparative example was obtained using this treating agent.

[Comparative Example 3] The content ratio of each component in the treating agent in Example 1 was 55 wt% of silk powder and 4 parts of water.
A treating agent was prepared in the same manner as in Example 1 except that 4.5 wt% of polyvinyl alcohol and 0.5 wt% of polyvinyl alcohol were used. Using this treating agent, a surface material for sanitary goods of this comparative example was obtained. [Comparative Example 4] The polyethylene non-woven fabric of Example 1 was used without being treated with the treating agent of Example 1 and left untreated.

Next, the above Examples 1 to 10 and Comparative Example 1
Each of the surface materials for sanitary goods obtained in Nos. To 4 was evaluated for hygroscopicity and touch feeling. Tables 1 and 2 show the results. The evaluation of the hygroscopicity was performed by placing the sample that had reached the equilibrium state at 23 ° C. and 30% RH on one side (the powder-treated side) up to 3
The measurement was performed by measuring the change in weight after being placed in an atmosphere of 0 ° C. and 80% RH for 4 hours.

The evaluation of the touch feeling was performed by having ten persons perform sensory evaluation. This evaluation is based on the touch feeling of the surface material of Comparative Example 4 (3 points). 5: Very good touch feeling, 4: Good touch feeling, 3: Normal, 2: Slightly poor touch feeling, 1 : Very poor touch feeling was scored. The numerical values in Tables 1 and 2 are the average values of 10 persons.

[0041]

[Table 1]

[0042]

[Table 2]

From Tables 1 and 2, it can be seen that the surface materials for sanitary articles of Examples 1 to 10 are superior to the surface materials of Comparative Example 4 in that they have a fine hygroscopic property because they have fine particles of natural organic substances attached thereto. It can be seen that a unique smooth touch feeling can be obtained. On the other hand, in the surface material for sanitary goods of Comparative Example 1, since the average particle size of the fine particles of the natural organic substance is 35 μm and larger than 30 μm, it can be seen that a rough feeling is generated and the touch feeling is poor.

In the surface material for sanitary goods of Comparative Example 2, the content of the fine natural organic substance powder in the treating agent was less than 0.5 wt%, and the amount of the fine natural organic substance powder adhered to the substrate was small.
It is understood that the effect of improving the hygroscopicity and the touch feeling cannot be sufficiently obtained. Regarding the surface material for sanitary goods of Comparative Example 3,
Since the content of the fine powder of natural organic matter in the treating agent is more than 50 wt%, the treating agent thickens at the time of preparation and becomes non-uniform, that is, lump, and a treating agent which can be used for treating the base material is obtained. Did not. Since the surface material for sanitary goods of Comparative Example 4 is untreated, it can be seen that the hygroscopicity and the touch feeling are poor.

Example 11 In the second embodiment, polyvinyl alcohol [Povar 1] was used as the dispersion medium.
17 (trade name, manufactured by Kuraray Co., Ltd.)] in an aqueous synthetic resin solution.
Using a sponge powder having an average particle size of 5 μm, the sponge powder was mixed and sufficiently dispersed in an aqueous synthetic resin solution to obtain a treating agent of this example.

The content ratio of each component in this treating agent is as follows:
Sponge powder 10% by weight, water 85% by weight, polyvinyl alcohol 5% by weight. Further, a cotton non-woven fabric was used as a base material of the surface material, and after applying the treatment agent to the cotton non-woven fabric using a spray processing machine so as to have a basis weight of 30 g / m ² ,
It was dried at 150 ° C. for 1 minute by a hot air drier to obtain a surface material for cotton puff of this example.

[Comparative Example 5] The cotton nonwoven fabric of Example 11 was not treated with the treating agent of Example 11 and used without treatment. Next, the surface materials for cotton puffs obtained in Example 11 and Comparative Example 5 were evaluated for moisture absorption, touch feeling, and water absorption. Table 3 shows the results.

The evaluation of the hygroscopicity and the touch feeling was performed in the same manner as in Examples 1 to 10 and Comparative Examples 1 to 4 described above. Evaluation of water absorption, distilled water is dropped on the surface of the surface material for cotton using a micropipette, measure the amount of distilled water dropped until it permeates from the back surface of the surface material, to determine the amount of water absorption It was done by doing.

[0049]

[Table 3]

As can be seen from Table 3, the surface material for cotton puff of Example 11 had sponge powder, which is a fine powder of a natural organic substance, so that a good hygroscopic property and a crisp good touch characteristic of a natural material were obtained. In addition, it can be seen that excellent water absorption can be secured. Cotton puffs are often used by incorporating liquid cosmetics, and since high water absorption is required, it is possible to obtain a surface material suitable for cotton puffs by attaching sponge powder. Understand.

On the other hand, the surface material for the cotton puff of Comparative Example 5 is made of a natural cotton nonwoven fabric, and thus has excellent hygroscopicity and touch feeling. It is understood that the water absorption required for the material cannot be sufficiently satisfied.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention.

FIG. 2 is a sectional view showing a second embodiment of the present invention.

[Explanation of symbols]

 1,2 Skin contact products 11,22 Surface materials

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) A61F 13/49 A61F 13/18 310Z 13/511 A41B 13/02 NF term (Reference) 3B029 BB05 BF05 4C003 BA02 GA03 4C098 AA09 CC07 DD23 DD24 DD25 DD26 DD30

Claims (11)

[Claims] 1. A skin contact product to be used in contact with the skin, wherein a natural organic fine powder is adhered to at least a portion of the skin contact product which directly contacts the skin. 2. The skin contact product according to claim 1, wherein the skin contact product is a sanitary product to be applied to the skin, comprising a surface material that directly contacts the skin. A skin contact article characterized by being constituted by an adhered substrate. 3. The skin contact product according to claim 1, which is a cosmetic tool used for makeup. 4. The skin contact product according to claim 1, wherein the average particle size of the fine powder of the natural organic substance is 30 μm or less. 5. The skin contact article according to claim 1, wherein the average particle diameter of the fine powder of the natural organic substance is 10 μm or less. 6. The skin contact product according to claim 1, wherein the natural organic substance fine powder is attached by treating with a treating agent containing the natural organic substance fine powder. A skin contact product comprising an organic fine powder and at least one dispersion medium selected from water, an organic solvent, a resin emulsion and an aqueous resin solution. 7. The skin contact product according to claim 6, wherein the content of the natural organic fine powder in the treating agent is 0.1%.
Skin contact product characterized by being 5 to 50% by weight. 8. The skin contact article according to claim 6, wherein the dispersion medium is a resin emulsion or a resin aqueous solution, and a resin solid content in the treatment agent is 0.5 to 20% by weight. Skin contact products. 9. A skin contact product to be used in contact with the skin, wherein at least a portion directly contacting the skin is subjected to a treatment using a treating agent, whereby a natural organic fine powder is attached to the skin contact product. The agent comprises the natural organic matter fine powder having an average particle size of 30 μm or less, and one of a resin emulsion and a resin aqueous solution for dispersing the natural organic matter fine powder, and the natural organic matter in the treatment agent The content of the fine powder is 0.
A skin contact product characterized in that the content is 5 to 50% by weight, and the resin solid content in the treatment agent is 0.5 to 20% by weight. 10. The skin contact product according to claim 9, which is a sanitary product to be applied to the skin, comprising a surface material directly contacting the skin, wherein the surface material includes the natural organic substance fine powder. A skin contact article characterized by being constituted by an adhered substrate. 11. The skin contact article according to claim 9, which is a cosmetic tool used for makeup.