KR20170017089A - Pack sheet comprising rare earth oxide and method for manufacturing the same - Google Patents

Abstract

The present invention relates to a pack sheet containing rare earth oxides and a production method thereof. More specifically, the present invention relates to a pack sheet containing rare earth oxides, which comprises: a base sheet; an image part formed by an ink composition containing rare earth oxides at one side of the base sheet; and a cosmetic composition layer formed on the other side of the base sheet. The present invention further relates to a production method thereof.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pack sheet comprising rare earth oxides,

The present invention relates to a pack sheet containing a rare earth oxide capable of reversibly changing hue and a method for producing the pack sheet.

The pack sheet is a skin care product, which can be divided into a mask pack attached to the entire face and a patch form attached to a part of the face such as an eye pack or a nose pack. Such a pack sheet is applied to the skin of the user for a certain period of time in a state impregnated with an active substance containing various ingredients useful for the skin such as a moisturizing agent, a whitening agent, or a cosmetic, etc., and nourishes the skin.

On the other hand, in general, the pack sheet is formed in a single color. However, in recent years, in order to provide external features to the pack sheet, a product which prints a character or image of a predetermined color on the sheet surface is disclosed in Korean Registered Utility Model No. 20-0476715 And 20-0475538.

However, such a conventional pack sheet shows only a predetermined color in the process, and there is a limitation in expressing various colors, and there is a problem in that the expression of color is insufficient.

Korean Utility Model Registration No. 20-0476715 Korean Utility Model Registration No. 20-0475538

An aspect of the present invention is to provide a pack sheet capable of imparting sensory differentiation by reversibly changing the hue according to an external light source, and a method of manufacturing the pack sheet.

An embodiment of the present invention is a base sheet comprising: a base sheet; An image portion formed by an ink composition including a rare earth oxide on one surface of the base sheet; And a cosmetic composition layer formed on the other side of the base sheet by a cosmetic composition.

The ink composition preferably further comprises a colorant and a dispersant.

The ink composition preferably contains 0.1 to 10% by weight of a rare earth oxide, 0.5 to 20% by weight of a colorant, and 0.05 to 10% by weight of a dispersant, based on the total weight of the composition.

The rare earth oxide includes at least one rare earth element selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, .

The rare earth oxide preferably has an average particle diameter of 5 to 200 nm.

The cosmetic composition preferably contains a hydrophilic polymer, a polyhydric alcohol, a crosslinking agent, a gelation rate regulator, a skin active ingredient and water.

Wherein the cosmetic composition comprises 0.5 to 10 wt% of a hydrophilic polymer, 5 to 35 wt% of a polyhydric alcohol, 0.01 to 5 wt% of a crosslinking agent, 0.01 to 5 wt% of a gelling rate regulator, 0.1 to 15 wt% And a residual amount of water.

It is preferable that the cosmetic composition further comprises at least one selected from the group consisting of preservatives, perfumes, surfactants and thickeners.

The thickness of the cosmetic composition layer is preferably 0.05 to 0.3 cm.

The base sheet is preferably at least one selected from the group consisting of paper, polymer resin, natural fiber, or synthetic fiber, and a fabric, a nonwoven fabric, and a film.

The thickness of the base sheet is preferably 0.1 to 5 mm.

Another embodiment of the present invention includes the steps of forming an image portion on either side of a base sheet using an ink composition containing a rare earth oxide; Preparing a cosmetic composition by mixing a skin active ingredient and water at a temperature of 60 to 80 캜 and adding a hydrophilic polymer, a polyhydric alcohol, a gelation rate regulator and a crosslinking agent; And coating the cosmetic composition on the other surface of the base sheet to form a layer of a cosmetic composition. The present invention also provides a method of manufacturing a pack sheet comprising the rare earth oxide.

Preferably, the image portion is formed by at least one printing method selected from the group consisting of a silk screen, a gravure, a digital print, and a UV printing method.

It is preferable that at least one selected from the group consisting of a preservative, a perfume, a surfactant, and a thickener is further added to the cosmetic composition.

The ink composition preferably further comprises a colorant and a dispersant.

The ink composition preferably contains 0.1 to 10% by weight of a rare earth oxide, 0.5 to 20% by weight of a colorant, and 0.05 to 10% by weight of a dispersant, based on the total weight of the composition.

The rare earth oxide includes at least one rare earth element selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, .

The rare earth oxide preferably has an average particle diameter of 5 to 200 nm.

The pack sheet of the present invention is capable of expressing various color changes as the light source is changed in different environments.

Further, the color change due to the rare earth oxide is due to the absorption and reflection of the rare earth oxide, and since the color change speed is fast and there is no light heat, even when applied to the image portion of the pack sheet, the weather resistance and heat resistance are not affected, It is possible to improve the quality while maintaining.

Furthermore, by applying the pack sheet or the like to various types of pack sheets such as a mask pack, an eye pack, and a co-pack, it is possible to express various colors according to a light source, A pack sheet of the type can be provided.

1 is a schematic diagram of a pack sheet comprising an image portion, a base sheet and a layer of a cosmetic composition.
2 is a cross-sectional view of a pack sheet comprising an image portion, a base sheet and a layer of a cosmetic composition.

Hereinafter, preferred embodiments of the present invention will be described. However, the embodiments of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below. Further, the embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art.

An embodiment of the present invention is a base sheet comprising: a base sheet; An image portion formed by an ink composition including a rare earth oxide on one surface of the base sheet; And a cosmetic composition layer formed on the other side of the base sheet by a cosmetic composition.

1 and 2 respectively show a schematic and sectional view of an exemplary pack sheet of the present invention, wherein the pack sheet 100 of the present invention comprises a base sheet 20, an ink containing rare earth oxides on either side of the base sheet, An image portion 30 formed by the composition and a cosmetic composition layer 10 formed on the other side of the base sheet by a cosmetic composition.

1 and 2, the image portion 30 is shown as a layer distinguishable from the base sheet 20. However, the image portion 30 may be formed over the entire surface of the base sheet, And may be formed on the entire or part of the base sheet.

Y, La, Ce, Pr, Nd, Pm and Sm on the base sheet for supporting the layer of the cosmetic composition, the pack sheet comprising the rare earth oxide is a pack sheet having reversible discoloring property, And an rare earth oxide containing at least one rare earth element selected from the group consisting of Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu.

The rare earth element is a generic name of 17 elements combined with scandium (Sc), yttrium (Y), third elements of the periodic table and 15 elements of lanthanum series of atomic numbers 57 to 71, and is usually silver white or gray metal. - The specificity of the electron shell has a property of narrow and sensitive absorption or luminescence in the visible light wavelength range. In the present invention, it is preferable to use a rare earth oxide having absorption and emission characteristics of the specific wavelength, and the rare earth oxide to be used is preferably represented by the formula M ₂ O ₃ . Wherein M represents at least one rare earth element selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, . Examples of the rare earth oxides constituted by the above formula include neodymium oxide (Nd ₂ O ₃ ), holmium oxide (Ho ₂ O ₃ ), tungsten oxide (Tm ₂ O ₃ ), erbium oxide (Er ₂ O ₃ ), gadolinium oxide ₂ O ₃ ), europium oxide (Eu ₂ O ₃ ), gadolinium oxide (Gd ₂ O ₃ ), and the like are not particularly limited as long as they are oxides containing rare earth elements.

On the other hand, the rare earth oxide is preferably a rare earth oxide fine particle, and is preferably particles having an average particle diameter of 5 to 200 nm, preferably 10 to 100 nm. If the average particle diameter of the rare earth oxide is less than 5 nm, the cost of preparing particles of rare earth oxide is greatly increased, and if the diameter exceeds 200 nm, the absorption rate of the absorption peak to a specific wavelength is lowered.

The ink composition may further include a coloring agent and a dispersing agent in addition to the rare earth oxide. The ink composition may include 0.1 to 10% by weight of a rare earth oxide, 0.5 to 20% by weight of a colorant, and 0.05 to 10% It is preferable to include a residual amount of a solvent.

More preferably, the rare earth oxide is contained in an amount of 0.1 to 10% by weight, more preferably 0.5 to 5% by weight. When the content of the rare earth oxide is less than 0.1% by weight, the color reproducibility with respect to the light source is decreased. The improvement of the effect is not significant compared to the amount of use, and the manufacturing cost is increased, resulting in a problem that the economical efficiency is lowered.

Further, the ink composition contains 0.5 to 20% by weight, more preferably 1 to 10% by weight, of a coloring agent based on the total weight of the composition. When the content is less than 0.5% by weight, it is difficult to exhibit color variation due to the combination of the discoloration due to the absorption peak of the rare earth oxide particles and the coloring effect of the colorant. When the content exceeds 20% by weight, There is a problem that the increase in the variation effect due to the increase in the cost is not large and the economical efficiency is low.

On the other hand, a conventional industrial colorant can be used as the colorant, and it is preferable to use an environmentally friendly colorant which is harmless to the human body. Specifically, the environmentally-friendly coloring agent may be a natural coloring agent extracted from agricultural plants or fruits. It is preferable that the natural coloring agent is blended with two or more of the natural coloring agents according to color, and incorporated in the ink composition according to the color standards of red, green and blue However, it is not limited thereto.

The ink composition may further include a dispersant. By including the dispersant, the dispersion stability of the rare earth oxide having a relatively large specific gravity can be improved to prevent the precipitation of the rare earth oxide. Therefore, even when a large- An image portion in which oxides are uniformly dispersed can be obtained.

That is, the dispersant serves to lower the surface tension of the rare earth oxide fine particles, thereby inhibiting aggregation of rare earth oxides and improving dispersibility. Such dispersants include, for example, butylene glycol dicaprylate / dicaprate, PEG-60 hydrogenated castor oil, Pigment-10 dimethicone, (PEG-10 dimethicone), bis-ethoxydiglycol cyclohexane 1,4-dicarboxylate, isostearic acid, salts of lignin sulfonic acid, Formaldehyde condensates of lignin sulfonic acid, formaldehyde condensates of alkyl naphthalene sulfonic acid, formaldehyde condensates of creosote oil sulfonic acid, and the like, and anionic dispersants are preferably used.

The anionic dispersant is not particularly limited, but is, for example, a polymeric sulfonic acid, preferably a formalin condensate of an aromatic sulfonic acid, and a formalin condensate of a lignin sulfonic acid. Examples of the formalin condensates of aromatic sulfonic acids include formalin condensates of creosote-suy sulfonic acid, formalin condensates of cresol sulfonic acid, formalin condensates of phenol sulfonic acid, formalin condensates of beta -naphthol sulfonic acid, Formalin condensates of tallinsulfonic acid and? -Naphtholsulfonic acid, and formalin condensates of cresol sulfonic acid and 2-naphthol-6-sulfonic acid. These condensates all include salts such as sodium salts. Among them, a formalin condensate of a creosote-ethylsulfonic acid, a formalin condensate of naphthalenesulfonic acid, and a formalin condensate of lignin sulfonic acid are more preferable.

As the aromatic sulfonic acid (salt) formalin condensate, for example, DEMOL N (trade name, manufactured by Kao Corporation), DEMOL C (trade name, manufactured by Kao Corporation), and sodium salt of special aromatic sulfonic acid formalin condensate, DEMOL And SNB (trade name, manufactured by Kao Corporation). However, the present invention is not limited thereto.

The dispersant may include 0.05 to 10% by weight, more preferably 0.1 to 5% by weight based on the total weight of the ink composition. When the content is less than 0.05% by weight, the rare earth oxides may aggregate to disperse evenly And when the content is more than 10% by weight, there is a problem that the formulation stability is poor.

On the other hand, the cosmetic composition layer formed on the other surface of the base sheet is not particularly limited and may be formed by any cosmetic composition which can be formed as a cosmetic composition layer on one side of the base sheet, but the cosmetic composition may be a hydrophilic polymer, It is preferable to include a functional additive including at least one selected from the group consisting of a preservative, a flavor, a surfactant, and a thickening agent as required, including an alcohol, a crosslinking agent, a gelling rate controlling agent, .

The hydrophilic polymer is added for gelation and is a polymer which can be gelated by water, and examples thereof include gelatin, polyacrylate or a salt thereof, polymethacrylic acid, carboxyvinyl polymer, polyvinyl alcohol, polyacrylamide , Polyethylene oxide, polyethyleneimine, polyvinylpyrrolidone, methylcellulose, cellulose, carboxymethylcellulose, and hydroxyethylcellulose, but is not limited thereto. The polyacrylate salt Is preferably a metal salt such as lithium, sodium or potassium.

The hydrophilic polymer is contained in an amount of 0.5 to 10% by weight, more preferably 1 to 5% by weight based on the total weight of the cosmetic composition. If the content is less than 0.5% by weight, the cosmetic composition layer may not maintain sufficient strength When the content is more than 10% by weight, the viscosity of the cosmetic composition for forming a cosmetic composition layer becomes high, resulting in nonuniform coating and low workability due to high viscosity at the time of production.

The polyhydric alcohol contained in the cosmetic composition layer functions as a moisturizing agent and can be, for example, one selected from the group consisting of glycerin, ethylene glycol, 1,3-butylene glycol, propylene glycol, dipropylene glycol, sorbitol and xylitol Or more, but is not limited thereto. More preferably, glycerin is used.

The polyhydric alcohol is preferably contained in an amount of 5 to 35% by weight, more preferably 10 to 30% by weight based on the total weight of the cosmetic composition. If the content is less than 5% by weight, moisture contained in the cosmetic composition layer tends to volatilize when the pack sheet is applied to the skin, and the adhesive strength is lowered. When the content exceeds 35% by weight, There is an uneconomical problem because the feeling is bad.

The crosslinking agent is preferably a polyvalent metal salt, and examples thereof include aluminum hydroxide, aluminum hydroxide gel, hydrated aluminum silicate, kaolin, aluminum acetate, aluminum lactate, aluminum stearate, calcium chloride, magnesium chloride, magnesium aluminum metasilicate And magnesium aluminosilicate, but it is not limited thereto. More preferably aluminum hydroxide can be used.

The amount of the crosslinking agent is preferably 0.01 to 5% by weight, more preferably 0.05 to 3% by weight, and most preferably 0.05 to 0.2% by weight based on the total weight of the cosmetic composition. When the content of the crosslinking agent is less than 0.01% by weight, the crosslinking reaction does not proceed sufficiently and the gel strength tends to become insufficient. When the crosslinking agent is more than 5% by weight, The crosslinking reaction speed becomes too fast, the gelation becomes nonuniform, and the strength of the composition tends to become strong, so that the workability tends to become insufficient.

Examples of the gelling rate controlling agent include organic acids such as EDTA, acetic acid, lactic acid, oxalic acid, citric acid, and tartaric acid having a chelating action on metal ions; Organic acid salts such as EDTA-2 sodium, calcium citrate, sodium citrate and disodium citrate; And organic bases, but is not limited thereto. At this time, the gelling rate controlling agent is preferably 0.01 to 5% by weight, more preferably 1 to 3% by weight based on the total weight of the cosmetic composition. At this time, when the gelling rate controlling agent is contained in an amount of less than 0.01% by weight, the desired crosslinking rate is not obtained, so that the final product is susceptible to deterioration or stickiness, and if it contains more than 5% by weight, crosslinking occurs abruptly , There is a problem that the surface of the support is uneven when coated.

The skin active ingredient enhances the affinity with the skin and enhances the skin absorption rate of the functional ingredient which can effectively act on the skin. The skin active ingredient may be a whitening ingredient, a wrinkle function, an antioxidant ingredient, a moisturizing ingredient, an antibacterial ingredient, But is not limited thereto.

The skin active ingredient may be at least one selected from the group consisting of arbutin, niacinamide, vitamin C, vitamin B5, vitamin E, retinol, coenzyme Q10, adenosine, elastin, collagen, hyaluronic acid, chitosan, But is not limited thereto.

The natural extract may be selected from the group consisting of aloe, green tea, ginseng, red ginseng, vinegar, ginkgo leaf, propolis, mulberry leaf, silkworm, snail mucilage, kakaduplum, camucam, yashiyaki, squalane, caviar, broccoli, , Raspberry, raspberry, raspberry, mackerel, mackerel, mackerel, mulberry root, raspberry, carrot, caffeine, Hamamelis, Spirulina, salmon roe, It is preferably at least one selected from the group consisting of edelweiss, chamomile, lavender, peppermint, eucalyptus, lemon balm, oregano, tea tree, golden, perennial, lily of the year, citron, albumin, egg yolk and milk protein.

The skin active ingredient may be contained in an amount of 0.1 to 15% by weight, more preferably 0.15 to 5% by weight, based on the total weight of the cosmetic composition. When the content is less than 0.1% by weight, the skin-affinity is poor and the effect of improving skin is insufficient. When the content is more than 15% by weight, skin irritation may occur and stability may be insufficient. And discoloration may occur.

On the other hand, the water contained in the cosmetic composition layer is used as a solvent and is not limited thereto. The content of the water may be 100% by weight, based on the total weight of the cosmetic composition, The amount of the remaining amount is preferably contained in the cosmetic composition, more preferably 45 to 80% by weight.

Meanwhile, the cosmetic composition may further include a functional additive, if necessary, including at least one selected from the group consisting of preservatives, perfumes, surfactants and thickeners, and the functional additive is not limited thereto.

On the other hand, the thickness of the cosmetic composition layer is preferably 0.05 to 0.3 cm, more preferably 0.1 to 0.2 cm. If the thickness of the cosmetic composition layer is less than 0.05 cm, it is difficult to handle due to the thin film, and if the thickness exceeds 0.3 cm There is a problem in that adhesion to the skin having curvature is deteriorated.

On the other hand, the base sheet on which the image part and the cosmetic composition layer are formed serves to support the above-mentioned cosmetic composition layer. For example, the base sheet is made of paper, polymer resin, natural fiber or synthetic fiber, , And may be selected from the group consisting of, for example, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyethylene, polypropylene, polybutadiene, ethylene-vinyl acetate copolymer and polyvinyl chloride A nonwoven fabric or a film made of one or more materials selected from the following materials.

If the thickness of the base sheet is less than 0.1 mm, the base sheet may be easily broken during storage, transportation and use. If the thickness of the base sheet is more than 5 mm, There is a problem that the thickness becomes thick as a whole and it is difficult to adhere and adhere to the skin.

Further, the pack sheet may further include a base sheet laminated on one side of the cosmetic composition layer, and a release film may be additionally laminated on the other side of the cosmetic composition layer, wherein the release film acts as a protective film, Stable storage.

Another embodiment of the present invention includes the steps of forming an image portion on either side of a base sheet using an ink composition containing a rare earth oxide; Preparing a cosmetic composition by mixing a skin active ingredient and water at a temperature of 60 to 80 캜 and adding a hydrophilic polymer, a polyhydric alcohol, a gelation rate regulator and a crosslinking agent; And coating the cosmetic composition on the other surface of the base sheet to form a layer of a cosmetic composition. The present invention also provides a method of manufacturing a pack sheet comprising the rare earth oxide.

The ink composition comprising the rare earth oxide may further comprise a colorant and a dispersant together with the rare earth oxide, wherein 0.1 to 10% by weight of rare earth oxide, 0.5 to 20% by weight of colorant and 0.05 to 20% 10% by weight, and preferably contains a residual amount of a solvent.

As described above, the rare earth oxide is selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu Preferably, the rare-earth oxide particles include at least one rare earth element, and the average diameter of the rare-earth oxide particles is preferably 5 to 200 nm.

Preferably, the image portion is formed by at least one printing method selected from the group consisting of a silk screen, a gravure, a digital print, and a UV printing method. However, the present invention is not limited to this, Can be applied.

Further, the step of preparing the cosmetic composition may further comprise at least one selected from the group consisting of a preservative, a perfume, a surfactant, and a thickening agent to prepare a pack sheet containing a rare earth oxide, The ingredients and content of the cosmetic composition contained in the cosmetic composition layer used for the cosmetic composition are as described above.

On the other hand, the pack sheet containing the rare earth oxide of the present invention may include openings in the eyes, nose or mouth portions, if necessary. In this case, in the method for producing a pack sheet containing the rare earth oxides, And forming an opening by perforating the hole.

Hereinafter, the present invention will be described in detail with reference to Examples. However, the following examples are intended to illustrate the present invention in detail and should not be construed as limiting the scope of the present invention.

< Example  And Comparative Example >

< Experimental Example  1: Absorption Rate and Color Evaluation According to Size of Rare Earth Oxide Particles>

(Ho ₂ O ₃ ) having a main absorption peak in the wavelength region near 460 nm, 540 nm and 650 nm were prepared and the average particle diameter of the holmium oxide (Ho ₂ O ₃ ) was 2 μm and 30 nm. Respectively.

As a result, the absorption rate of holmium oxide having an average diameter of 2 m was 540 nm and the absorption rate of a wavelength region around 650 nm was less than 50%, whereas the absorption rate of holmium oxide having an average diameter of 30 nm was 70 to 80% It is understood that the wavelength absorption rate is different according to the size of the wavelength.

Further, when the holmium oxide particles are irradiated to the three-wavelength light emitting type fluorescent lamp having large bright lines near 490 nm, 550 nm, and 620 nm, the wavelengths near 540 nm and 650 nm are largely absorbed in the holmium oxide particles and are included in the three- Since the bright line near 620 nm is reflected, the color of the Ho ₂ O ₃ ultrafine particles becomes stronger in red, and consequently, the deep pink can be expressed.

< Manufacturing example  1>

The cosmetic composition of the present invention was prepared as follows.

ingredient Ingredients Content (% by weight) Hydrophilic polymer Sodium polyacrylate 3 Polyhydric alcohol glycerin 25 Cross-linking agent Aluminum hydroxide 0.1 Gelling rate modifier Tataric acid 0.01 Skin active ingredient Arbutin 2 Hydrolized Collagen 0.1 Marchia extract 0.1 Preservative Methylparaben 0.15 Propylparaben 0.05 Spices Spices 0.01 Thickeners Polysorbate 60 0.1 menstruum Purified water Balance

< Example  1 to 7 and Comparative Example  1 to 4>

The components of the following Tables 2 and 3 were mixed to prepare the ink compositions of Examples 1 to 7 and Comparative Examples 1 to 4 according to the present invention and then a specific image was printed on a base sheet made of PET by a gravure printing method .

ingredient Ingredients Example 1
(weight%) Example 2
(weight%) Example 3
(weight%) Example 4
(weight%) Example 5
(weight%) Example 6 (% by weight) Example 7
(weight%) Rare earth oxide Average particle diameter of 30 nm, Ho ₂ O ₃ 2 - - 7 10 - - Average particle diameter of 10 nm, Ho ₂ O ₃ - 2 - - - - - Average particle diameter of 100 nm, Ho ₂ O ₃ - - 2 - - - - Particle average diameter 30 nm, Pr ₂ O ₃ - - - - - 3 - Average particle diameter of 30 nm, Nd ₂ O ₃ - - - - - - 5 Dispersant DEMOL N 0.1 0.1 0.1 6 10 0.5 One coloring agent Blue pigment 0.5 0.5 0.5 0.5 0.5 0.5 0.5 menstruum Purified water 97.4 97.4 97.4 86.5 79.5 96 93.5

ingredient Ingredients Comparative Example 1
(weight%) Comparative Example 2
(weight%) Comparative Example 3
(weight%) Comparative Example 4
(weight%) Rare earth oxide Average particle diameter of 3 nm, Ho ₂ O ₃ 2 - - - Average particle diameter
250 nm, Ho ₂ O ₃ - 2 - - Average particle diameter of 30 nm, Ho ₂ O ₃ - - 15 0.05 Dispersant DEMOL N 0.1 0.1 6 10 coloring agent Blue pigment 0.5 0.5 0.5 0.5 menstruum Purified water 97.4 97.4 78.5 89.45

As can be seen from Table 3, when the particle size of the rare earth oxide of Examples 1 to 7 is smaller than the appropriate range (Comparative Example 1) or larger (Comparative Example 2), or the rare earth oxide fine particles (Comparative Example 3), and Comparative Example 4, in which a small amount of rare earth oxide fine particles were contained in the ink composition. The ink compositions were each printed on a PET film by gravure printing, then molded into a desired shape, 4 &lt; / RTI &gt;

< Experimental Example  2: Evaluation of color reproducibility of ink compositions containing rare earth oxides>

The color reproducibility of the compositions of Examples 1 to 7 and Comparative Examples 1 to 4 was evaluated according to the light source. The results are shown in Table 5 below.

In order to evaluate the color reproduction, the degree to which mask packs prepared by the compositions of Examples 1 to 7 and Comparative Examples 1 to 4 were colored in three different light sources were visually evaluated to thirty panelists, (0 points: no change, 1 point: no change, 2 points: normal, 3 points: good, 4 points: 5 points, Excellent), and the average value thereof is shown in Table 5.

Types of rare earth oxides Types of light sources UV-rays Fluorescent light (standard light source D65) Fluorescent light (3 wavelengths) Ho ₂ O ₃ yellow Light orange Orange Pr ₂ O ₃ yellow light green Dark yellow green Nd ₂ O ₃ Light brown Light blue Dark blue

UV-rays Fluorescent light (standard light source D65) Fluorescent light (3 wavelengths) Example 1 4.9 4.8 4.9 Example 2 4.9 5.0 4.9 Example 3 5.0 4.9 5.0 Example 4 5.0 5.0 5.0 Example 5 4.9 5.0 5.0 Example 6 5.0 4.9 5.0 Example 7 5.0 4.9 4.9 Comparative Example 1 1.2 1.1 1.3 Comparative Example 2 0.2 0.4 0.3 Comparative Example 3 0.1 0.2 0.4 Comparative Example 4 0.3 0.2 0.1

As shown in Table 5, in the case of Examples 1 to 7, when the particle size of the oxide is made smaller than the appropriate range (Comparative Example 1) or larger (Comparative Example 2) than the case where the color reproducibility of the light source is excellent, Or the rare earth oxide fine particles (Comparative Example 3) or the rare-earth oxide fine particles (Comparative Example 4) in an amount exceeding that of the compositions of Examples 1 to 7 .

10: Cosmetic composition layer
20: base sheet
30: image portion
100: Pack sheet

Claims (18)

A base sheet;
An image portion formed by an ink composition including a rare earth oxide on one surface of the base sheet; And
And a cosmetic composition layer formed on the other side of the base sheet by a cosmetic composition.
The pack sheet of claim 1, wherein the ink composition further comprises a colorant and a dispersant.
The ink composition according to claim 2, wherein the ink composition comprises a rare earth oxide comprising 0.1 to 10% by weight of a rare earth oxide, 0.5 to 20% by weight of a colorant and 0.05 to 10% by weight of a dispersant based on the total weight of the composition, Pack sheet included.
The rare earth oxide according to claim 1, wherein the rare earth oxide is at least one selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Lt; RTI ID = 0.0 &gt; of rare earth &lt; / RTI &gt; elements.
The pack sheet of claim 1, wherein the rare earth oxide comprises a rare earth oxide having an average particle diameter of 5 to 200 nm.
The pack sheet according to claim 1, wherein the cosmetic composition comprises a rare earth oxide including a hydrophilic polymer, a polyhydric alcohol, a crosslinking agent, a gelation rate regulator, a skin active ingredient and water.
The cosmetic composition according to claim 6, wherein the cosmetic composition comprises 0.5 to 10% by weight of a hydrophilic polymer, 5 to 35% by weight of a polyhydric alcohol, 0.01 to 5% by weight of a crosslinking agent, 0.01 to 5% 0.1 to 15% by weight of water and a balance of water.
7. The pack sheet according to claim 6, wherein the cosmetic composition further comprises at least one selected from the group consisting of a preservative, a perfume, a surfactant, and a thickening agent.
The pack sheet of claim 1, wherein the layer of cosmetic composition comprises 0.05 to 0.3 cm thick rare earth oxide.
The pack sheet according to claim 1, wherein the base sheet comprises at least one selected from the group consisting of paper, a polymer resin, a natural fiber or a synthetic fiber, and a fabric, a nonwoven fabric, and a film.
The pack sheet of claim 1, wherein the base sheet has a thickness of 0.1 to 5 mm.
Forming an image portion on either side of the base sheet using an ink composition comprising a rare earth oxide;
Preparing a cosmetic composition by mixing a skin active ingredient and water at a temperature of 60 to 80 캜 and adding a hydrophilic polymer, a polyhydric alcohol, a gelation rate regulator and a crosslinking agent; And
And coating the other side of the base sheet with the cosmetic composition to form a cosmetic composition layer.
13. The method of claim 12, wherein the image portion is formed by at least one printing method selected from the group consisting of silk screen, gravure, digital print, and UV printing methods.
[Claim 12] The method according to claim 12, wherein the step of preparing the cosmetic composition further comprises adding at least one selected from the group consisting of a preservative, a perfume, a surfactant and an additive agent.
The method according to claim 12, wherein the ink composition further comprises a colorant and a dispersant.
16. The ink composition according to claim 15, wherein the ink composition comprises a rare earth oxide containing 0.1 to 10% by weight of a rare earth oxide, 0.5 to 20% by weight of a colorant and 0.05 to 10% by weight of a dispersant, &Lt; / RTI &gt;
The rare earth oxide according to claim 12, wherein the rare earth oxide is at least one selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Or more of rare earth elements.
13. The method of claim 12, wherein the rare earth oxide comprises a rare earth oxide having an average particle diameter of 5 to 200 nm.

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