JP2011207787A - Gel sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gel sheet produceable in extremely superior productivity, capable of exhibiting a degree of pigmentation and high-level feeling, and controllable into an intentional design even when a powdery coloring material cannot be dispersed homogeneously in the gel sheet.SOLUTION: The gel sheet is obtained by burying a colored porous base material 3 as an intermediate base material. The powdery coloring material 4 is used in combination in the sheet 1, and the porous base material 3 is obtained by using a woven fabric obtained by weaving a colored yarn. The gel sheet has the powdery coloring material present in the openings of the porous base material 3 without dividing the porous base material 3 into upper and lower two layers.

Description

  The present invention relates to a gel sheet useful as a cosmetic pack.

  A transparent or translucent gel sheet is used as a cosmetic pack. In order to add aesthetic decoration to these to enhance the design as a beautiful appearance or to create a high-class feeling, gold powder or colored powder is added to the gel sheet.

  Conventionally, Patent Document 1 provides a sheet-shaped cosmetic material having a beautiful appearance by blending a pearl material into a transparent or translucent sheet-shaped preparation. As the pearl material, glittering powder and metal vapor deposition film are described. In addition, there is a description that it is preferable that a woven fabric or a non-woven fabric having a large aperture ratio is contained in order to maintain the strength and impart elasticity.

JP 2002-29913 A

However, Patent Document 1 is a gel sheet in which a component that causes a metal color to appear on the surface of the hydrogel layer is contained in the hydrogel layer. Here, the component causing the metal color to appear is a powder such as iron oxide-coated titanium mica obtained by coating mica with titanium oxide or iron oxide. It is difficult to disperse this powder in the gel sheet.
The gel-forming composition has a relatively high viscosity, and when dispersed vigorously for powder dispersion, bubbles enter the gel sheet, and defoaming takes a long time. If it is stirred slowly so that bubbles do not enter, it takes a long time to disperse the powder, resulting in poor productivity. When added in powder form in this way, the colored powder could not be uniformly dispersed in the gel sheet, or conversely, partial coloring could not be achieved. If the dispersion is insufficient, a large amount of powder is required for coloring. Further, when the amount of the colored powder added was not sufficient, the coloration degree and high-quality feeling expected were not expressed. The decentralized state is difficult to control, so deliberate design is difficult.
An object of the present invention is to provide a gel sheet that is remarkably excellent in productivity, can exhibit a coloring degree and a high-class feeling, and can be controlled to an intentional design.

Therefore, as a result of intensive studies to solve the above problems, the present invention enables intentional and effective decoration by embedding a colored porous base material in the gel sheet as an intermediate base material of the gel sheet. A gel sheet is provided.
The invention of claim 1 is a gel sheet in which a colored porous substrate is embedded as an intermediate substrate.
The invention according to claim 2 is the gel sheet according to claim 1, wherein the colored porous substrate is a substrate made of colored fibers.
The invention according to claim 3 is the gel sheet according to claim 1, wherein the colored porous substrate is a substrate dyed and / or printed on a substrate made of uncolored fibers.
The invention of claim 4 is the gel sheet according to any one of claims 1 to 3, wherein a powder coloring material is used in combination.
In the invention of claim 5, the colored porous base material is embedded as an intermediate base material, and the powder coloring material is used in the gel sheet, and the base material is divided into two upper and lower layers. The gel sheet according to claim 4, wherein the powder coloring material is provided in an opening of the base material.
The invention of claim 6 is a cosmetic gel pack using the gel sheet according to any one of claims 1 to 5.

  In the gel sheet of the present invention, since the colored porous substrate is embedded in the gel sheet as an intermediate substrate, the degree of coloration is higher than that of a gel sheet to which a powder coloring material that is difficult to disperse in the gel sheet is added. Excellent, high-class feeling can be expressed, and the design can be intentionally controlled. Further, it is not necessary to worry about the dispersibility of the powder coloring material, and the productivity is remarkably excellent, so that it can be provided at low cost.

FIG. 2 is a cross-sectional view showing an embodiment of the present invention.

  An example of the present invention will be described with reference to the drawings. In FIG. 1, 1 is a gel sheet, 2 is a hydrogel composition, 3 is a colored porous substrate embedded as an intermediate substrate in the gel sheet 1, and 4 is a powder coloring material.

Porous substrate Examples of the porous substrate that can be used in the present invention include woven fabric (including knitted fabric) and non-woven fabric. Of these, woven fabric is preferred. The non-colored portion is preferably transparent or translucent in the gel sheet, and more preferably transparent.
The porous substrate does not divide the gel sheet made of the gel composition into upper and lower layers. As the porous base material having a large opening ratio, the hypothetical shielding area N (m ² / m ² ) per 1 m ² represented by the following formula (Equation 1) is
0.2 ≦ N ≦ 2.0
It is preferable to be within the range.

(Equation 1)
N = 0.107W √ (1 / dρ)
Here, in the formula (1), W is the weight per unit area of the cloth-like substrate (g / m ² ), d is the denier fiber amount of the constituent fiber, and ρ is the density of the constituent component of the fiber (g / cm ³ ).
In the formula 1 where N is less than 0.2, the degree of coloring becomes insufficient, a large amount of material is required for coloring, and the design is limited. In addition, the strength of the porous substrate is not sufficient, and the effect of improving the strength of the gel sheet is small. On the other hand, when N is larger than 2.0, the rigidity is too strong and lacks flexibility, and when used as a pack material, the sticking to the skin is bad, which is not preferable.

As the fiber constituting the woven or non-woven fabric having a large aperture ratio, commonly used fibers can be used, but synthetic fibers are preferable to natural fibers in terms of transparency and hygiene management.
Among them, preferable materials include nylon, rayon, and polyester fiber. Furthermore, in the case of a multifilament type fiber, it is preferable that the number of fibers constituting one yarn is small from the viewpoint that bubbles are not easily generated when embedded in a gel. A monofilament type is more preferable.
As a more specific porous substrate, a knitted fabric knitted using a yarn (bright yarn or glossy yarn) having a special cross section that appears to shine by changing the reflection of light is preferable.

(Colored porous substrate)
As a method for coloring the porous substrate, colored fibers can be used as the fibers constituting the porous substrate.
For coloring the fibers, general dyes and pigments used for coloring the fibers can be used.
It is also possible to dye an uncolored porous substrate or to print it for coloring. Dyeing and printing may be used in combination. Thereby, intentional coloring is possible and the freedom degree of design is raised.
Further, a film colored as a fiber or a film subjected to metal vapor deposition may be finely slit to form a thread.
Alternatively, a porous substrate may be formed using a fiber in which a glitter powder (powder coloring material) conventionally used in cosmetics is attached to a fiber using an adhesive or the like. The glitter powder may be directly attached to the porous substrate using an adhesive or the like.

Examples of glitter powder include titanium oxide-coated mica, titanium oxide-coated plate-like silica, titanium oxide-coated plate-like alumina, iron oxide-coated titanium mica, iron oxide-coated mica, plate-like iron oxide, mica, fish phosphorus foil, and pearls. Examples include shells, bismuth oxychloride, metal-deposited resin films, metal oxide-deposited resin films, metal foils of gold, aluminum, etc., especially titanium oxide-coated mica, titanium oxide-coated plate-like silica, titanium oxide-coated plate-like alumina. It is preferably selected from iron oxide-coated mica, plate-like iron oxide, mica, bismuth oxychloride, a metal-deposited resin film, and a pulverized product of a metal-oxide-deposited resin film. These coloring materials can be used alone or in combination of two or more. In addition, as a kind of titanium oxide-coated mica, a combination of a pigment, iron oxide and the like can be preferably used. In the coating powder such as titanium oxide-coated mica, the thickness of the coating layer is not particularly limited, and it can be arbitrarily used from the one that emits strong gloss to the one that emits little gloss.
When attaching a glittering substance to a fiber, it is preferable to attach 1-50 weight% of a glittering substance with respect to the weight of a fiber. If it is less than 1% by weight, it will be difficult to create a design property, and if it is 50% by weight or more, it will be weak in strength and easily broken off, which is not preferable. The size of the glittering substance when adhered is preferably 0.5 μm to 2 mm. When the thickness is less than 0.5 μm, it is difficult to create a design property, and when it exceeds 2 mm, the glittering substance protrudes from the gel and easily causes irritation, which is not preferable.
The colored porous substrate is preferably a knitted fabric knitted with a yarn (bright yarn or glossy yarn) having a special cross section that appears to shine by changing the reflection of light, and is colored with a dye. More specifically, a knitted fabric called a golden spark half in which a nylon bright yarn is woven with tricot half and dyed with a beige acid dye is preferable.

(Combination of powder coloring material)
Moreover, it is more effective to add a small amount of powder coloring material (colored powder) conventionally used in cosmetics. Of these, the glittering powder is preferred. The addition amount is preferably 0.001 to 3% by mass with respect to the sheet-form preparation. If it is too small, it will be difficult to realize the design, and if it is too much, the cost will be high.
By using a small amount of powder coloring material in combination, the design and high-quality feeling as a whole including the colored base material become high, and the fun is felt due to irregularity.

Hereinafter, although an example is described, the present invention is not limited to the example. In addition, the compounding quantity of Table 1 has shown the weight part.
Example 1
Mixing solution for gel formation obtained by thoroughly mixing each component shown in Table 1 below (sodium polyacrylate as a gel base material, magnesium aluminate metasilicate as a cross-linking agent, methyl paraben as a preservative, as a plasticizer DPG (dipropylene glycol) and PEG1000 (polyethylene glycol, molecular weight 1000) 50% aqueous solution, prepared by stirring and mixing water as a solvent) quickly spread on a 100 μm thick PET film (polyethylene terephthalate film) did. A 1 mm thick spacer is placed around it, and a golden spark half nylon 6 knitted fabric as an intermediate substrate (colored porous substrate) (the density of nylon 6 is 1.14 g / cm ³ , 15 denier monofilament bright A yarn woven with tricot half and dyed with a beige acid dye, knitted fabric weight 17 g / m ² , N = 0.44) is placed on the spread blended liquid, and the blended liquid is further added to the intermediate substrate. The film was spread on top, covered with a 38 μm thick PET film on top, and pressed with a flat metal plate from above. In this state, it was allowed to stand at room temperature for 24 hours to solidify, and a gel sheet having a thickness of 1 mm was obtained. Since there was a gel on both sides of the intermediate substrate (the intermediate substrate was embedded in the gel), the coloration could be confirmed from either side.

(Examples 2 to 4)
The gel-forming liquid mixture of the gel-forming liquid mixture of Example 1 is colored powders A to C shown in Table 1 below (Glitter powder A: “Timica Brilliant Gold” manufactured by Engelhard, Inc., glitter powder B) : Cibajaban "Art Deco Gold Pearl", glittering powder C: Nippon Koken Kogyo "Prominence RYH"), and the same as in Example 1 except that the mixture was changed to a gel-forming liquid mixture with stirring and mixing. Thus, a gel sheet having a thickness of 1 mm was obtained.

(Example 5) (No glitter powder)
As an intermediate substrate (colored porous substrate), the resulting nylon 6 knitted fabric (the density of nylon 6 is 1.14 g / cm ³ , 15 denier monofilament yarn in tricot half woven with beige acid dye A gel sheet having a thickness of 1 mm was obtained in the same manner as in Example 1 except that the dyed one and the knitted fabric basis weight 17 g / m ² , N = 0.44) were used.

(Example 6) (Gel type difference 1)
Example 1 except that the gel-forming liquid mixture was changed to a gel-forming liquid mixture obtained by mixing and stirring each component containing the colored powder shown in Table 1 below and heating to 80 ° C. with stirring. Similarly, a gel sheet having a thickness of 1 mm was obtained.

(Example 7) (Gel type difference 2)
Example 1 except that the gel-forming liquid mixture was changed to a gel-forming liquid mixture obtained by mixing and stirring each component containing the colored powder shown in Table 1 below and heating to 80 ° C. with stirring. Similarly, a gel sheet having a thickness of 1 mm was obtained.

(Example 8) (Intermediate base material incorporating glittering powder)
As an intermediate substrate (colored porous substrate), nylon 6 knitted fabric (nylon 6 has a density of 1.14 g / cm ³ , 15 denier monofilament and 1 mm diameter iron oxide coated titanium mica Example 1 with the exception of using a tricot half-woven yarn obtained by adhering the yarn to the filament at a weight ratio of 25%, and using a knitted fabric basis weight of 17 g / m ² , N = 0.44) as the intermediate substrate. Similarly, a gel sheet having a thickness of 1 mm was obtained.

(Comparative Example 1)
In Comparative Example 1, a gel sheet having a thickness of 1 mm was obtained in the same manner as in Example 1 except that tricot woven yarn of 15 denier thickness made of nylon 6 which was not colored was used as an intermediate substrate. The intermediate substrate was visually almost transparent in the gel, and was visually sparse and hardly recognized even when 0.3% of glittering powder was added.

  The gel sheets obtained in these examples and comparative examples have a thickness of 1 mm and have an intermediate base material, and both surfaces thereof are covered with a peelable PET separator. This was punched out into a mask shape covering the entire face with a cutting machine, and then sealed in a pouch bag made of an aluminum laminate film having excellent light shielding properties and water vapor barrier properties to obtain a mask-like gel sheet pack agent.

The sensory property evaluation method used in the present invention is as follows.
Using 10 professional panelists, the sensory characteristics of the prototype were sensorially evaluated by a sticking test. A method was used in which the separators on both sides of the mask-like gel sheet pack were peeled off and attached to the face for 15 minutes and then removed. As an evaluation item, it was evaluated in a questionnaire format whether or not it felt visually interesting. When the effect is not recognized, the score is 0, and when the effect is confirmed, the score is 5 points, and the evaluation is made in a total of 4 stages. The total score of all the members is taken as the evaluation result (50 points) (Table 2). .
Therefore, it shows that evaluation is so high that a score is high.

  In Examples 1 to 8, the visual interest was improved as compared with Comparative Example 1, the visual psychological expectation was generated, and various design effects were achieved. Moreover, since a design property is high even with a small amount of coloring material, it can be produced at a low cost.

DESCRIPTION OF SYMBOLS 1 Gel sheet 2 Hydrous gel composition 3 Porous base material 4 Powder coloring material

Claims (6)

  A gel sheet in which a colored porous substrate is embedded as an intermediate substrate.   The gel sheet according to claim 1, wherein the colored porous substrate is a substrate prepared from colored fibers.   The gel sheet according to claim 1, wherein the colored porous substrate is a substrate dyed and / or printed on a substrate made from uncolored fibers.   The gel sheet according to any one of claims 1 to 3, wherein a powder coloring material is used in combination.   A colored porous substrate is embedded as an intermediate substrate, and a powder coloring material is used in the gel sheet, and the porous substrate is opened in two layers without dividing the porous substrate into upper and lower layers. The gel sheet according to claim 4, wherein the powder coloring material is contained in the gel sheet.   A cosmetic gel pack using the gel sheet according to any one of claims 1 to 5.

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