JPH107523A - Pack - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a peeling-off type sheet-like pack having a metal oxide on the adhesive surface of the outermost surface layer and excellent in actions for removing KAKUSEN (sebum) and aged keratin. SOLUTION: This pack has a metal oxide on the adhesive surface of the outermost surface layer directly brought into contact with skin. The metal oxide is titanium dioxide, silica, etc., which has an average primary particle diameter of 5-100nm. Polyvinyl alcohol, etc., is used of the adhesive agent layer and the outermost surface layer. The pack is prepared by suitably compounding known components for cosmetic, dissolving the components, coating the mixture on a substrate, drying the coated mixture to form a sheet, dissolving the metal oxide in an adhesive agent, coating the mixture on the formed sheet, and subsequently drying the mixture. The pack is used by coating water or a lotion on a target site for the removal of KAKUSEN (sebum) and aged keratin therefrom, tightly adhering the pack to the coated site, sufficiently drying the adhered pack, and subsequently peeling off the pack. Since a conventional agent such as polyvinyl alcohol can be used without requiring a special polymeric compound, the pack is advantageous on cost.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packing material having an excellent effect of removing keratotic plugs and aged keratin. More specifically, it is a peel-off type sheet-like pack material, and by admixing a metal oxide on the adhesive surface of the outermost layer, the metal oxide is effectively adsorbed and the effect of removing keratotic plugs and aged keratin is removed. Related to increased pack fees.

[0002]

2. Description of the Related Art Conventionally, JP-A-6-65048, JP-A-5-194180, and JP-A-58-18040
As disclosed in JP-A No. 8, a peel-off type sheet-like packing material containing polyvinyl alcohol, alginic acid and the like has been proposed. The sheet-shaped pack material is characterized in that the method of use is simpler than the conventional application type, but the performance of these preparations for removing keratotic plugs was not sufficient. On the other hand, in JP-A-7-330575, a sheet-like pack material having an effective keratotic plug removal performance is obtained by blending a polymer compound having a salt-forming group.

[0003]

On the other hand, if it is possible to improve the keratotic plug removal performance by applying a conventionally used dosage form such as polyvinyl alcohol without using a special polymer compound, it is cost-effective. The benefits are great.

[0004]

In view of such a situation,
The inventors of the present invention have conducted intensive studies, and as a result, a peel-off type sheet-like pack material, characterized in that a metal oxide is blended on the adhesive surface of the outermost layer that directly contacts the skin, fulfills the above object. , It was found that it has excellent keratotic plug removal performance.

That is, the present invention relates to a peel-off type sheet-like pack material, wherein a metal oxide is compounded on the adhesive surface of the outermost layer which is in direct contact with the skin.

[0006]

Embodiments of the present invention will be described below in detail. The pack material of the present invention is a peel-off type sheet material, and comprises a pressure-sensitive adhesive layer composed of a base material such as nonwoven fabric, cloth, paper, and Japanese paper, and an outermost layer containing a metal oxide.
The outermost layer is a surface that directly contacts the skin.

Here, the material of the base material used in the present invention may be either a material that transmits moisture or a material that absorbs moisture. For example, polyester, polyethylene,
Fibers such as polypropylene, polyethylene terephthalate, cellulose, hemp, wool and the like can be mentioned, and those in the form of non-woven fabric, woven fabric and the like can be mentioned.

[0008] Most preferably, the metal oxide used in the present invention has an average primary particle diameter in the range of 5 to 100 nm.
The particle size of the metal oxide used in the present invention is measured by observation with an electron microscope. Examples of the type of metal oxide used in the present invention include titanium oxide, zinc oxide, iron oxide, iron hydroxide, silicic acid anhydride, aluminum oxide, zirconium oxide, lower titanium oxide, iron-doped titanium oxide, cerium oxide, and the like. However, titanium oxide and silicic anhydride are particularly preferred.

The metal oxide used in the present invention may be untreated, or may have been subjected to an inorganic surface treatment such as aluminum oxide or silicon dioxide or a hydrophilic surface treatment using a hydrophilic compound such as polyacrylic acid. No problem. The surface may be treated with silicone, N-acylated lysine, metal soap, oil agent, fluorine compound or the like.

For the pressure-sensitive adhesive layer and the outermost layer of the present invention, a polymer such as polyvinyl alcohol, polyvinylpyrrolidone, alginate, agar, and a polyvinyl alcohol / acrylic acid copolymer, which has been used in conventional packing materials, is used. However, polyvinyl alcohol is most preferred. The type of the pressure-sensitive adhesive in the pressure-sensitive adhesive layer and the type of the pressure-sensitive adhesive in the outermost layer may be the same or different.

It is preferable not to use a surfactant for the outermost layer. The amount of the metal oxide compounded in the outermost layer is preferably 1 to 50% by weight in terms of the weight ratio of the outermost layer.

The thickness of the pressure-sensitive adhesive layer in the pack material of the present invention is preferably from 10 to 2000 μm, and the thickness of the outermost layer is preferably from 10 to 1000 μm. Further, the pressure-sensitive adhesive layer and the substrate may be integrated or separated.

[0013] The pack material of the present invention may be cut or processed in advance in the form of a portion, such as a face or a nose, from which keratin plugs and aging skin are to be removed. Further, the packing material may be protected by a water-impermeable film to prevent the curing of the pressure-sensitive adhesive.

In the packing material of the present invention, in addition to the above-mentioned components, powders, oils, resins, and the like conventionally known in cosmetics are used.
Fragrance, preservative, bactericide, humectant, bioactive ingredient, solvent,
Water and the like can be simultaneously added.

The method for producing the pack material of the present invention is as follows. The above components are dissolved in a solvent of water or alcohol, and the resulting solution is uniformly applied on a substrate, and then dried to obtain a sheet A. Next, a component consisting of a metal oxide and an adhesive is dissolved in a solvent, applied uniformly on the sheet A, and then dried to obtain the pack material of the present invention. A method using a doctor blade can be cited as a method for applying the solution uniformly. Further, after drying or at the time of drying, the film can be passed between rollers to make the film uniform.

[0016] The method of using the pack material of the present invention is as follows: water or a lotion is applied to a site from which a keratotic plug or aging skin is to be removed, the pack material of the present invention is adhered to the water and lotion, and the pack is thoroughly dried. There is a method of peeling off the material.

[0017]

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

The evaluation of the cosmetics used in the examples and comparative examples was conducted by asking the panelists of a total of 40 women to use the pack materials prepared according to the formulations of the examples and comparative examples on the left and right sides of the nose, respectively. After exposing the surface of the peeled pack material to ultraviolet rays, inputting the image to a CCD camera and counting the number of plugs using an image processing device, the pack material of the example was compared with the pack material in the effect of removing plugs. The results were evaluated as ○ when it was superior to that of No., Δ when there was little difference, and X when the pack charge of the comparative example was superior to that of the example.

[0019]

[Table 1]

In addition to the evaluation of the effect of removing the keratin plug, the sensory characteristics were evaluated. The evaluation method is as follows. A total of 40 female panelists were asked to use the packs prepared according to the formulas of the examples and comparative examples on the left and right sides of the nose, respectively, and the pack charge of the example was superior to that of the comparative example in feel during use. ○ indicates that there is little difference,
The case where the pack charge of the comparative example was superior to that of the example was evaluated as x.

Example 1 A pack was prepared according to the following formulation. The unit is% by weight.
It is.

[0022]

The components 1 to 9 were mixed by heating, applied to a polyester nonwoven fabric, and dried at 70 ° C. for 10 minutes. After drying, the film was passed through a roller having a slit width of 0.1 mm to make the film uniform, and a sheet A was obtained. Then, components 10 to 14
Were mixed by heating and applied to the surface of the sheet A. This was dried at 70 ° C. for 10 minutes, the film was made uniform using a roller, and the outermost layer (thickness: 500 μm) was formed to obtain the intended pack material.

Comparative Example 1 In Example 1, the pack without the outermost layer was used as the pack charge of the comparative example.

The puncture plug-removing ability of the pack materials prepared by the formulations of Examples and Comparative Examples was evaluated according to the above-mentioned method. As a result, the former evaluation result was ○, and that of the comparative example was ×. Thus, the pack charge of the example was significantly better than that of the comparative example. In addition, the sensory characteristics were evaluated. Table 2 shows the results.

[0026]

[Table 2]

From the results shown in Table 2, it can be seen that the examples are remarkably excellent in various sensory characteristics as compared with the comparative examples.

[0028]

From the above, it is apparent that the present invention provides a pack material having an excellent effect of removing keratotic plugs and aged keratin and an excellent practical feeling in terms of sensory characteristics.

Claims (1)

[Claims] 1. A peel-off type sheet-like pack material, wherein a metal oxide is blended into the outermost adhesive surface which directly contacts the skin.