JPH101417A - Sheet-shaped pack material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prepare a sheet-shaped pack material, excellent in the effect for preventing the adhering of a sticky resin to fingers by subjecting both the obverse side and the reverse side of a peel off-type sheet-shaped pack material to a water repelling treatment. SOLUTION: This peel off-type sheet-shaped pack material is treated with a water repelling agent both on the surface closely adhering to the skin and the surface of the opposite side. The thickness of a tacky agent layer of the pack material is preferably 10-2000μm. As a method for the water repelling treatment, it is cited that a sheet-shaped pack material is prepared, and subsequently a water repelling agent (preferably, a perfluoroalkylated resin, a perfluoroalkylsilane, etc.) is applied on both the surface closely adhering to the skin and the surface of the opposite side, etc. The amount of the water- repelling agent to be applied is preferably the amount achieving a contact angle of >=60 degree, preferably >=90 degree when water is used. Thus obtained pack material is excellent in the activity for removing sebum and aged keratin, and effective for preventing fingers from being soiled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a peel-off type sheet-like packing material which is excellent in removing keratotic plugs and aged keratin and does not stain fingers. More specifically, the present invention relates to a peel-off type sheet pack material in which the surface opposite to the surface in contact with the skin is subjected to a water-repellent treatment to prevent the adhesive resin from being attached to the finger.

[0002]

2. Description of the Related Art Conventionally, various peel-off type sheet packs for removing keratotic plugs have been devised. As a general method of using the sheet-shaped pack material, water or a lotion is applied to a portion where pores such as a nose are conspicuous, and the sheet-shaped pack material is adhered from above, dried, and then dried. A method of peeling off the pack material and removing keratotic plugs and aging skin may be mentioned.

[0003]

However, when the amount of water or lotion is small, the ability to remove keratotic plugs and aging skin may be significantly reduced, and conversely, the amount of water or lotion is large. In such a case, there are problems such as a long drying time, and the pressure-sensitive adhesive melts and separates from the sheet. Controlling the amount of water is an important factor in determining the ability to remove dirt. However, it was difficult for the user to control the water content by himself, and in many cases, the removal of dirt was not successful. Further, when the amount of water is too much or the hands are wet, when the pack material surface is pressed with a finger, a highly viscous adhesive may adhere to the finger.

[0004]

Means for Solving the Problems In view of this problem, the inventors of the present invention have conducted intensive studies and as a result, have found that a peel-off type sheet-like pack material is provided with a water-repellent surface on the surface opposite to the surface in close contact with the skin. The sheet-shaped pack fee is characterized in that
It has been found that it has an excellent effect of preventing adhesive resin from adhering to a finger. That is, the present invention is a peel-off type sheet-like pack material, wherein the surface opposite to the surface in close contact with the skin is subjected to a water-repellent treatment.

[0005]

Embodiments of the present invention will be described below in detail. As the peel-off type sheet-shaped packing material used in the present invention, a conventionally known sheet-shaped packing material can be used. The sheet-shaped packing material has a conventionally known pressure-sensitive adhesive layer such as polyvinyl alcohol, polyvinylpyrrolidone, carboxymethylcellulose, vinyl acetate, alginic acid, an acrylic resin, and a styrene resin, and is formed into a sheet. A support such as a cloth may be provided.

[0006] In addition, the shape of the nose or the like may be processed in advance, or a portion such as the head of the nose may be devised to increase the density of pores.

The thickness of the pressure-sensitive adhesive layer in the pack material of the present invention is preferably from 10 to 2000 μm.

[0008] In the sheet pack material used in the present invention, various materials conventionally used in cosmetics, such as oils, powders (pigments, dyes, resins), fluorine compounds, resins, surfactants, adhesives, Components such as preservatives, fragrances, humectants, physiologically active ingredients, salts, solvents, antioxidants, chelating agents, neutralizing agents, pH adjusters and the like can be simultaneously added. In particular, it is preferable to mix fine particle powder such as fine particle titanium oxide and silicic anhydride having an average particle diameter of 5 to 300 nm.

[0009] The sheet-shaped pack material of the present invention is characterized in that the surface opposite to the surface in contact with the skin has been subjected to a water-repellent treatment. Then, from the surface opposite to the surface that adheres to the skin, a method of treating the water-repellent agent, or the above-mentioned pressure-sensitive adhesive layer to a holding agent such as a woven or nonwoven fabric or paper that has been subjected to a water-repellent treatment in advance. Examples of the method include close contact, adhesion, and bonding.

The water repellent used in the present invention includes a perfluoroalkylated acrylic resin, a perfluoroalkyl silicone resin, a perfluoroalkylsilane, an alkylalkoxysilane, and a silicone resin. Perfluoroalkylated acrylic resin, perfluoroalkyl silicone resin, and perfluoroalkyl silane are preferable.

As a method of performing treatment with a water repellent, a water repellent dissolved in a solvent such as alcohol, cyclic silicone, light liquid isoparaffin, or hexane is applied to a sheet-like pack material or a holding agent to be treated. Then, a method of drying this is exemplified.

The amount of the water repellent applied varies depending on the type of the water repellent and the surface condition of the processed material. However, the amount of the water repellent provided with a contact angle of 60 ° or more, more preferably 90 ° or more when water is used. Is preferred. If the angle is less than 60 degrees, the adhesive resin may adhere to the hand.

[0013]

The present invention will be described in detail below with reference to examples and comparative examples.

The evaluation of the pack material used in the examples and comparative examples was carried out by asking ten panelists having various dermatosis to use the pack material according to the makeup method shown in the examples and comparative examples. Was tabulated in a questionnaire format. The results show how many of the panelists reported superior or slightly superior for each endpoint.

Example 1 A sheet pack was prepared by the following procedure using the following formulation.

[0016] 1. 1. Polyvinyl alcohol 8.0% by weight 2. Polyvinylpyrrolidone 2.0 3. sodium polyacrylate 5.0 Propylene glycol 2.05. Glycerin 1.5 6. 6. Fine particle titanium oxide (average primary particle diameter 35 nm) 12.0 Carrageenan 0.2 8. Ethyl alcohol 20.0 9. Preservative appropriate amount 10. Purified water qs 100.0

Components 1 to 10 were heated and mixed to obtain a stock solution of the pack. On the other hand, a solution in which a perfluoroalkylated acrylic resin was dissolved in light liquid isoparaffin and petroleum ether was spray-coated on one surface of a polyester nonwoven fabric, and the solvent was completely dried to obtain a water-repellent nonwoven fabric. At this time, the contact angle of water was 90 degrees or more. Apply the stock solution to the water-repellent non-woven fabric and use a roller to make it 0.7 mm thick
Was formed. This was cut into an appropriate size to obtain a sheet-like pack material.

Comparative Example 1 A sheet-type pack material as a comparative example was obtained in the same manner as in Example 1 except that an untreated nonwoven fabric was used instead of the water-repellent nonwoven fabric of Example 1.

Using the sheet-shaped pack materials of the Examples and Comparative Examples, after washing the face of the soap, water was applied to the nose, and the sheet-shaped pack materials were pressed, and the surface was rubbed with the hand for 20 minutes. After being adhered, they were peeled off. Table 1 shows the evaluation results.

[0020]

[Table 1]

From the results in Table 1, it can be seen that the sheet-like pack material of the example of the present invention has the same effect of removing the keratotic plug as compared with that of the comparative example, but does not stain the hands. In contrast, in the case of the sheet-shaped pack material of the comparative example, the pressure-sensitive adhesive permeated the sheet surface while touching the sheet surface, and the pressure-sensitive adhesive was transferred to the finger.

[0022]

From the above, it is apparent that the present invention provides a sheet-like pack material which is excellent in removing keratotic plugs and aged calluses and which does not stain fingers.

Claims (1)

[Claims] 1. A peel-off type sheet-like pack material, wherein a surface opposite to a surface in contact with the skin is subjected to a water-repellent treatment.