KR101885086B1 - Hydrogel mask pack and manufacturing thereof - Google Patents

Abstract

The present invention relates to a foil hydrogel mask pack for increasing skin absorption of an effective component by inhibiting evaporation of the effective component, and a production method thereof. Specifically, the foil hydrogel mask pack of the present invention is prepared by forming a metal thin film layer, an adhesive layer, a nonwoven fabric layer, and a hydrogel layer sequentially, and prevents attachment and infiltration of contaminants into the hydrogel layer. In addition, skin absorption rate of moisture and the effective component can be improved by suppressing evaporation of the moisture and the effective component from the hydrogel layer. Thus, skin hydration is facilitated by suppressing the evaporation of moisture from the skin, thereby ensuring excellent absorption rate of the effective component and outstanding skin attachability.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a foil hydrogel mask pack for inhibiting evaporation of an active ingredient and enhancing skin absorption of an active ingredient,

The present invention relates to a foil hydrogel mask pack for suppressing evaporation of an effective ingredient to improve skin absorption of an effective ingredient and a method for producing the same. More particularly, the foil hydrogel mask pack of the present invention comprises a metal thin film layer, Layer and the hydrogel layer are formed in order to prevent the contaminants from penetrating and adhering to the hydrogel layer and to prevent the effective ingredient of the hydrogel layer and moisture from evaporating to improve the skin absorption rate of the active ingredient and moisture, Promotes skin hydration by blocking evaporation, has an excellent absorption rate of active ingredient, and is excellent in skin adhesion.

The mask pack is based on the initial use of natural materials to rub on the face, and now it has evolved into various forms such as peel-off type, wash-off type, sheet type and the like.

The peel-off type is effective in removing impurities and exfoliation of the skin but causes skin irritation, and has a wash-off type (Wash off type) off type and wash-off type, which are effective for removing sebum and exfoliation, and have less skin irritation than the peel-off type, but are troublesome to wash after use, Off-type mask packs tend to decrease in consumer preference and demand.

On the other hand, the sheet type (the type that removes the sheet impregnated with the cosmetic material) is superior in the skin moisturizing and nutrition supply effect and has the advantage of minimizing the skin irritation as compared with the simple use method. .

Such a sheet type mask pack is classified into a nonwoven mask pack, a hydrogel mask pack, and a bio-cellulose mask pack depending on the sheet type.

The nonwoven fabric mask pack is a nonwoven fabric coated with a liquid cosmetic material. Since the material is easy to assemble and the manufacturing cost is low, it is distributed at a low price in the market, but the cosmetic material flows down and the skin adhesion force and skin moisturizing effect are low. Biocellulose mask packs use biomaterials made from microbial cultures. As skin adhesion is good and time goes by, there is an advantage that the adhesion is strengthened, and the demand is increasing. However, due to the microbial fermentation method, the content of chemical components such as preservatives is high It can cause irritation to sensitive skin, has a complicated manufacturing process, and has a disadvantage of high manufacturing cost.

On the other hand, the hydrogel mask pack has a feeling of smoothing after use and has a lower skin adhesion force than the bio-cellulosic mask pack. However, the hydrogel mask pack has better absorption rate of the active ingredient and better skin adhesion than the non-woven mask pack, It is easier to manufacture than a pack and has a low manufacturing cost and is now widely used.

The hydrogel mask pack refers to a hydrogel in which a hydrophilic polymer using purified water as a dispersion medium is crosslinked by covalent or non-covalent bonds to form a three-dimensional network structure. Since hydrogels are manufactured with weak acidity, they are less irritating to the skin and can contain a large amount of active ingredients due to the three-dimensional network structure of the hydrogels, exhibiting a high skin moisturizing effect.

However, a commercially available hydrogel mask pack is manufactured at a high temperature of 90 ° C, and a separate cooling device is required in manufacturing, which is difficult to handle as a device industry. In addition, there is a disadvantage in that the water stability of the hydrogel mask pack is poor and the storage stability of the hydrogel mask pack deteriorates because the water release is so severe that the hydrogel becomes thinner as the hydrogel is stored for a long period of time. Furthermore, when the hydrogel mask pack is used, one side of the mask pack not adhered to the skin is exposed to the outside, so that the effective ingredient and the moisturizing component of the mask pack are evaporated into the air and disappear, or the mask pack itself is hardened.

Therefore, the development of a hydrogel mask pack capable of improving the skin adhesion force of the hydrogel mask pack, increasing the skin moisturizing power, shortening the absorption time of the effective ingredient, and minimizing the evaporation of the active ingredient and moisturizing ingredient of the mask pack .

Disclosure of the Invention The present invention has been conceived to solve the above-mentioned problems, and it is an object of the present invention to provide a water absorbent article, which comprises a metal thin film layer, an adhesive layer, a nonwoven fabric layer, and a hydrogel layer successively formed to prevent moisture and active ingredients from being evaporated from the hydrogel layer, To provide a foil hydrogel mask pack which is excellent in skin moisturizing effect, excellent in skin adhesion force, promotes circulation of skin heat, inhibits evaporation of effective ingredient having excellent absorption rate of effective ingredient, and promotes skin absorption of effective ingredient .

In order to achieve the above object, a foil hydrogel mask pack for suppressing evaporation of an effective ingredient of the present invention to enhance skin absorption of an effective ingredient is characterized in that a metal thin film layer, an adhesive layer, a nonwoven fabric layer and a hydrogel layer are sequentially formed.

The foil hydrogel mask pack for inhibiting the evaporation of the active ingredient of the present invention and enhancing the skin absorption of the active ingredient is characterized in that the metal foil layer, the adhesive layer, the nonwoven fabric layer and the hydrogel layer are sequentially formed, It is possible to prevent evaporation, thereby improving the skin absorption rate of the active ingredient, providing excellent skin moisturizing effect, preventing the hydrogel layer from being contaminated, promoting circulation of skin heat, and rapidly absorbing effective ingredients of the mask pack into the skin.

Hereinafter, the present invention will be described in detail.

The foil hydrogel mask pack for suppressing the evaporation of the active ingredient of the present invention to promote skin absorption of the active ingredient is characterized in that a metal thin film layer, an adhesive layer, a nonwoven fabric layer and a hydrogel layer are formed in order.

The metal thin film layer is preferably an outer surface of the foil hydrogel mask pack of the present invention and has a thickness of 0.5 to 50 mu m. If the thickness of the metal thin film layer is less than 0.5 탆, the moisturizing component and the active ingredient of the hydrogel layer may be evaporated or the active ingredient of the gel layer may not be absorbed into the skin There is a problem in that the water absorption property of the moisturizing component and the active ingredient of the hydrogel layer is lowered. If the thickness of the metal thin film layer is more than 50 占 퐉, the skin self-respiration and the heat release of the skin are excessively blocked and the circulation of the skin heat is excessively promoted, which may cause skin heat sensation and skin irritation.

The metal thin film layer preferably includes polyester, silicon dioxide, resin, and metal particles. The silicon dioxide in the metal thin film layer serves to prevent oxidation of the metal particles. The metal particles may be a metal material such as aluminum, copper, manganese, or zinc. However, it is preferable to use a metal that is not harmful to the skin and does not cause skin irritation. More preferably, It is preferable to use at least one of platinum.

The adhesive layer is formed by applying an adhesive to the metal thin film layer so that the metal thin film layer and the nonwoven fabric layer are bonded to each other. The adhesive layer is preferably composed mainly of polyurethane and methyl ethyl ketone, and preferably has a thickness of 1 to 10 mu m. If the thickness of the adhesive layer is less than 1 占 퐉, the adhesion to the metal thin film layer and the nonwoven fabric layer is not sufficient. If the thickness exceeds 10 占 퐉, the degree of improvement of the adhesive strength against the thickness increase is insignificant. .

The nonwoven fabric layer is formed by laminating a nonwoven fabric on the adhesive layer by maintaining tension and supporting force of the hydrogel layer and acting as a support. The nonwoven fabric layer is preferably made of rayon. The rayon is made by blending caustic soda and carbon disulfide in soluble pulp having a large amount of? -Cellulose component to make a viscous solution having high viscosity, injecting the solution through a thin nozzle, and then bonding it with a cellulose molecule. It is soft and absorbent.

The hydrogel layer is formed by applying a hydrogel composition to a nonwoven fabric layer and then compressing the hydrogel composition. The thickness of the hydrogel layer is preferably 0.5 to 2.0 mm. If the thickness of the hydrogel layer is less than 0.5 mm, sufficient effective ingredients can not be supported on the foil hydrogel mask pack, resulting in deterioration of skin moisturizing effect or lowering of strength of the hydrogel layer, which may cause tearing of the foil hydrogel mask pack have. When the thickness of the hydrogel layer is more than 2.0 mm, the skin adhesion force of the foil hydrogel mask pack is lowered due to the excessive thickness, the skin moisturizing effect is lowered, the adhesive force to the nonwoven fabric layer is decreased, There is a falling problem.

The hydrogel layer is preferably formed of a hydrogel composition including a gelling polymer, a polyhydric alcohol, a crosslinking agent, a moisturizer, a surfactant, a preservative, a skin moisturizer, and purified water. Specifically, the amount of the gelatinized polymer is from 0.1 to 3 wt%, the polyhydric alcohol is from 1 to 20 wt%, the crosslinking agent is from 0.1 to 5 wt%, the preservative is from 0.01 to 1 wt%, the skin moisturizer is from 1 to 20 wt% By weight of the composition, such that the sum of the compositions does not exceed 100% by weight.

In addition, the viscosity of the hydrogel composition is preferably 500 to 20,000 cps. If the viscosity of the hydrogel composition is less than 500 cps, it is difficult to form the hydrogel layer by applying the hydrogel layer to the non-woven fabric layer and to maintain the shape of the hydrogel layer. When the viscosity is more than 20,000 cps, The skin adhesion may be deteriorated.

The gelling polymer is a material which makes the hydrogel composition into a gel state and is composed of glucomannan, galactomannan, guar gum, tara gum, locust bean gum, tamarind seed gum, pluronic, agar, algin, carrageenan and xanthan gum ≪ / RTI > When the content of the gelled polymer is less than 0.1% by weight, the hydrogel layer may not maintain its shape because the viscosity of the hydrogel composition is low, and the moldability of the mask pack There is a falling problem. If the content of the gelled polymer is more than 3% by weight, the viscosity and strength of the hydrogel composition may be increased, which may tear during molding of the mask pack, and the flexibility may be lowered, resulting in deterioration of skin adhesion.

The polyhydric alcohol imparts fluidity to the hydrogel composition by dispersing and dissolving the gelled polymer, which affects the skin adhesion of the hydrogel layer. The polyhydric alcohol may be selected from the group consisting of butylene glycol, 1,2-ethanediol, 1,2-propanediol, 1,3-propanediol, 3-chloro-1,2-propanediol, Diol, and glycerin. If the content of the polyhydric alcohol is less than 1% by weight, fluidity can not be imparted to the hydrogel composition. If the content of the polyhydric alcohol is more than 20% by weight, the viscosity of the hydrogel composition may be increased to deteriorate the moldability of the mask pack, Can be uncomfortable.

The crosslinking agent acts as a crosslinking agent for the gelled polymer and is preferably selected from the group consisting of aluminum hydroxide, hydrated aluminum silicate, kaolin, aluminum acetate, lactic acid, aluminum aluminum stearate, calcium chloride, magnesium chloride, magnesium aluminum metasilicate, At least one selected from the group consisting of magnesium, sodium polyacrylate, cellulose gum, polyacrylate and polyacrylamide can be used. If the content of the crosslinking agent is less than 0.1% by weight, the crosslinking reaction may not be sufficient and the hydrogel composition may be suspended. If the crosslinking agent content is more than 5% by weight, the crosslinking reaction speed may be accelerated to gel the hydrogel composition nonuniformly. The moldability may be deteriorated.

The preservative may be at least one selected from the group consisting of 1,2-hexanediol, phenoxyethanol, paraben, ethylhexyl glycerin and chlorphenazine. If the content of the preservative is less than 0.01% by weight, the preservative may be insufficient and the preservative effect may be insignificant. If the preservative is more than 1% by weight, the preservative may cause skin irritation.

The skin moisturizing agent may be at least one selected from the group consisting of natural extract, xylitol, water-soluble collagen, tocopherol, beta-glucan and hyaluronic acid. If the content of the skin moisturizing agent is less than 1% by weight, the effect of moisturizing the skin is insignificant. If the content of the skin moisturizing agent is more than 20% by weight, the viscosity of the hydrogel composition may be lowered and the shape retention and formability of the hydrogel layer may be impaired.

The natural extracts used as the skin moisturizers include green tea extract, licorice extract, mulberry extract, golden extract, red ginseng extract, guava extract, rosemary extract, corn oil extract, And apricot extract may be used.

In addition, the foil hydrogel mask pack of the present invention may further include a flavor and a coloring matter in the hydrogel composition as needed, and the content thereof is within a usual range. The above-mentioned fragrance can be usually used as a component used in a cosmetic composition, and organic or inorganic pigments conventionally used can be used as the pigment.

Hereinafter, the present invention will be described in more detail with reference to specific examples. The following examples are provided to help understand the present invention, but the scope of the present invention is not limited by the following examples.

≪ Preparation Example > Preparation of hydrogel composition

The hydrogel compositions were prepared according to the contents in Table 1 below.

The hydrogel composition was prepared by dispersing the gelled polymer in a polyhydric alcohol, mixing the preservative, the skin moisturizer and the purified water at a temperature of 70 ° C, and then adding and stirring the crosslinking agent. In the preparation of the hydrogel composition, it is preferable to dissolve at a temperature of 50 to 80 캜. If the temperature is lower than 50 ° C, the gelled polymer dispersed in the polyhydric alcohol may not be sufficiently dissolved in the purified water. If the temperature is higher than 80 ° C, the skin moisturizing agent may be denatured by heat.

Ingredient type Ingredients Content (% by weight) Gelling polymer Carrageenan 1.5 Logistein 0.4 Polyhydric alcohol 1,2-propanediol 3 glycerin 5 Butylene glycol 15 Cross-linking agent Sodium polyacrylate 0.05 Cellulose sword 0.3 Skin moisturizer Soluble collagen One Hyaluronic acid One Centipede extract 5 antiseptic 1,2-hexanediol 0.1 menstruum Purified water Balance

≪ Examples 1 to 7 > Preparation of foil hydrogel mask pack

Using the hydrogel composition prepared in the above Preparation Example, a foil hydrogel mask pack having different thicknesses of the metal thin film layers was prepared according to the following Table 2.

A method for producing a foil hydrogel mask pack comprises the steps of applying an adhesive to a metal thin film layer to form an adhesive layer having a thickness of 5 mu m and rayon to adhere to the adhesive layer to form a nonwoven layer, Was applied and compressed with a compression coating apparatus to form a 1.0 mm thick hydrogel layer and then cooled at room temperature for 1 hour to prepare a foil hydrogel mask pack.

Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Thickness of metal thin film layer (탆) 0.1 0.5 1.0 5 10 50 Thickness of adhesive layer (탆) 5 5 5 5 5 5 Type of nonwoven fabric layer Rayon Rayon Rayon Rayon Rayon Rayon Thickness of the hydrogel layer (mm) 1.0 1.0 1.0 1.0 1.0 1.0

≪ Comparative Examples 1 to 3 > Preparation of mask pack

In Comparative Examples 1 and 2, a mask pack was prepared in the same manner as in the above Example, except that the hydrogel composition of the preparation example was used to make the material of the nonwoven fabric layer different according to the following Table 3 to prepare a mask pack.

In Comparative Example 3, a hydrogel composition of 45 to 50 ° C was applied to a nonwoven fabric layer formed of rayon using the hydrogel composition of the above production example, compressed by a compression coating apparatus to form a 1.0 mm thick hydrogel layer, And cooled for 1 hour to prepare a foil hydrogel mask pack.

In Comparative Example 4, an adhesive was applied to the metal thin film layer to form an adhesive layer having a thickness of 5 mu m, rayon was adhered to the adhesive layer to form a nonwoven fabric layer, and then a liquid cosmetic composition And then cooled to room temperature to prepare a mask pack. The liquid cosmetic composition of Comparative Example 3 was prepared by mixing the ingredients shown in Table 4 below at 70 占 폚, cooling them to room temperature, and then using them.

Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Thickness of metal thin film layer (탆) 0.5 0.5 none 0.5 Thickness of adhesive layer (탆) 5 5 0 5 Type of nonwoven fabric layer TENCEL nylon Rayon Rayon Thickness of the hydrogel layer (mm) 1.0 1.0 1.0 none

Ingredient type Ingredients Content (% by weight) Incrementer Xanthan gum 0.5 Skin moisturizer Soluble collagen One Hyaluronic acid One Centipede extract 5 glycerin 5 antiseptic 1,2-hexanediol 0.1 corrector Triethanolamine 0.15 menstruum Purified water Balance

≪ Test Example 1 > Evaluation of physical properties and storage property of mask pack

Stability according to strength, temperature, and moisture retention were measured to evaluate the physical properties and storage properties of the mask packs prepared in Examples and Comparative Examples, and the results are shown in Table 5.

The strength was evaluated by measuring the compressive strength using a rheometer (SUN Rheo Meter, Sun Scientific Co.). In order to measure the compressive strength, the mask packs of Examples and Comparative Examples were prepared as a cylindrical sample having a width of 50 mm and a length of 50 mm. When measuring the compressive strength, the adapter was 10 mm in diameter, the entrance (entrance) distance was 15 mm, and the maximum stress of the load cell was 10 kg (maximum 20 kg).

For the stability according to the temperature, the mask packs of the examples and comparative examples were cut into a size of 5 cm x 5 cm, and then placed in chambers of 5 deg. C, 25 deg. C and 50 deg. C, respectively, and the conditions after storage for 24 hours were evaluated according to the following evaluation criteria . Evaluation criteria for stability (O: no separation, shape preservation,: separated by less than 30% of the total area,?: Separated by less than 50% of the total area of the mask pack, X: cosmetic composition of the mask pack, More than 70% of the total area)

The water retentivity was prepared by preparing mask packs of Examples and Comparative Examples of the same weight and placing the hydrogel layer or the nonwoven layer of the mask pack in contact with the glass plate in an environment of a temperature of 20 캜 and a humidity of 40% , And after standing for 12 hours, the remaining water amount of the mask pack was divided by the weight of the initial water amount, and expressed as a percentage.

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(kg / cm2) stability Water retention (%) 5 ℃ 25 ℃ 50 ℃ Example 1 3.9 □ ○ △ 14 Example 2 5.3 ○ ○ ○ 42 Example 3 5.7 ○ ○ ○ 56 Example 4 6.2 ○ ○ ○ 64 Example 5 10.7 ○ ○ ○ 83 Example 6 23.8 ○ ○ ○ 91 Comparative Example 1 1.5 △ □ X 12 Comparative Example 2 1.2 △ △ X 8 Comparison 3 0.5 □ □ △ One Comparative Example 4 0.7 ○ ○ ○ 6

As shown in Table 5, it can be seen that the strength and moisture retention of the mask pack are higher than those of the comparative example, and the comparative examples 1 to 3 show that the mask pack does not maintain its shape, I could.

Comparing Examples 1 to 6, it can be seen that as the thickness of the metal thin film layer increases, the strength of the mask pack is increased, the moisture retention is improved, and the shape of the mask pack is stably maintained. It was found that as the thickness of the metal thin layer of the mask pack was increased, the moisturizing component and the active ingredient of the hydrogel composition were prevented from being evaporated to the outside, the hydrogel layer could be maintained for a long time, and the storage property of the mask pack was improved.

On the other hand, when comparing Comparative Examples 1 and 2 and Example 2, it can be seen that the mask packs of Comparative Examples 1 and 2 have lower strength, lower stability, and lower moisture retention than Example 2. [ This is because the hydrogel layer of Comparative Examples 1 and 2 was unstable in the bonding state with the nonwoven fabric layer formed of tencel and nylon, and the shape of the mask pack could not be maintained. As a result, the moisture and the active ingredient of the hydrogel composition were evaporated And the hydrogel layer was not maintained in a gel form. As a result, it was found that the retention of the mask pack and the moisture retention were significantly lowered.

On the other hand, a comparison between Comparative Example 3 and Example 2 shows that the strength of the mask pack of Example 2 is higher than that of Comparative Example 3, and the moisture retention is excellent. That is, in Comparative Example 3, since the metal thin film layer is not present, the moisture gel layer is exposed to the outside, the strength of the mask pack is lowered, and the moisture and the effective ingredient of the hydrogel layer can not be blocked from evaporating to the outside, , And the storage stability of the mask pack is low.

On the other hand, comparing Comparative Example 4 with Example 2, it can be seen that the mask pack of Example 2 has higher strength and water retention than Comparative Example 4. That is, in Comparative Example 4, the liquid cosmetic composition of Comparative Example 4 was absorbed into the non-woven fabric layer, and that of Comparative Example 4 was a mask pack in which the liquid cosmetic composition was absorbed into the non-woven fabric layer, and Example 2 was a mask pack containing the hydrogel layer. It was easily evaporated to deteriorate moisture retention and storage of the mask pack was low.

Test Example 2 Evaluation of moisturizing effect of mask pack

In order to confirm the moisturizing effect of the foil hydrogel mask pack of the present invention, 50 adult women aged 20 to 40 years were selected. Each of the subjects was put in a set of 5 persons and the mask packs of Examples and Comparative Examples were put on the face for 10 minutes under the conditions of relative humidity of 40 to 60% and 22 to 25 캜, respectively. Then, The skin temperature, the skin moisture content, and the weight of the mask pack were measured, and the average of the scores of the evaluation items was obtained. The results are shown in Table 6.

The skin feeling was assessed by the 5-point scale method (5: very satisfied, 4: satisfactory, 3: normal, 2: dissatisfied, 1: extremely unsatisfactory) Camera.

The skin moisture content was measured before and after use of the mask pack using a moisture meter (Corneometer, Courage Khazka, Germany), and the unit of measurement was expressed in units of AU (Arbitrary Unit) given by the apparatus. Is high.

A sense of closeness Irritability Skin temperature (℃) Skin moisture (A.U.) Before use after use Before use after use Moisture growth rate (%) Example 1 5 5 31.3 31.3 42.9 56.1 31 Example 2 5 5 31.6 32.4 42.5 62.8 48 Example 3 5 5 32.1 33.7 43.1 68.2 58 Example 4 4 4 31.5 34.2 43.2 72.9 69 Example 5 3 3 31.2 34.8 42.1 75.3 79 Example 6 3 2 31.1 35.9 42.2 78.2 85 Comparative Example 1 2 4 31.2 31.1 42.7 58.5 37 Comparative Example 2 2 4 31.1 30.7 42.3 55.6 31 Comparative Example 3 4 5 32.1 31.2 40.8 47.5 16 Comparative Example 4 4 4 31.4 31.6 43.6 55.2 27

As shown in Table 6, the contact feeling and the irritating sensation were most excellent in Examples 1 to 3, and the change in the skin moisture amount was the most excellent in Example 6. [

Comparing the adhesiveness of Examples 1 to 6, Examples 5 and 6 showed the lowest degree of satisfaction, indicating that as the thickness of the metal thin layer increases, the thickness of the mask pack increases and adhesion decreases.

Comparing the sensation of stimulation and skin temperature of Examples 1 to 6, it can be seen that Example 6 exhibits the lowest satisfaction at stimulation and the greatest difference at skin temperature. This indicates that the thick metal thin film layer of Example 6 significantly blocked skin heat and skin respiration, thereby rapidly raising the skin temperature and causing the user to feel uncomfortable feeling and warmth, thereby stimulating the user.

Comparing the water increase rates of Examples 1 to 6, Example 6 is the most excellent, and Example 1 is the lowest. That is, considering the results of Table 5, as the thickness of the metal thin film increases, the degree of blocking the moisture and the effective ingredient of the hydrogel layer is improved, and the moisture of the hydrogel layer is sufficiently absorbed by the skin, . In addition, it was found that the heat of the skin and the moisture of the skin itself were also prevented from being diverted to the outside, promoting the circulation of the skin heat, and moisturizing and effective ingredients of the hydrogel layer being absorbed quickly and efficiently.

On the other hand, when Comparative Examples 1 and 2 and Example 2 were compared, it was found that Example 2 had better adhesion, less irritation, and significantly increased skin moisture content than Comparative Examples 1 and 2. Considering the stability of the mask pack identified in Test Example 1, in Comparative Examples 1 and 2, the hydrogel layer and the non-woven layer were unstable in the bonding state, so that the shape of the mask pack was not maintained and the moisture and effective components of the hydrogel layer were evaporated, And the skin absorption rate of the active ingredient was decreased.

On the other hand, when comparing Comparative Example 3 with Example 2 and Comparative Example 4, it can be seen that the moisture increase rate of the skin of Example 2 is the highest, and that of Comparative Example 3 is higher than that of Comparative Example 4 which does not have the hydrogel layer Which is remarkably low. That is, in Comparative Example 3, the surface of the hydrogel layer was exposed to the outside because the metal thin film layer was not present, so that the skin temperature was lowered when the moisture and the active ingredient of the hydrogel layer evaporated into the air, And the effect of promoting skin hydration is lowered.

Claims (7)

A metal thin film layer which blocks evaporation of moisture and an active ingredient of the hydrogel layer and blocks the heat of the skin and the moisture of the skin itself from being diverted to the outside to promote the circulation of the skin heat and absorb moisture and effective ingredients of the hydrogel layer quickly and efficiently ;
An adhesive layer formed by applying an adhesive to the metal thin film layer so that the metal thin film layer and the nonwoven fabric layer are bonded to each other;
A nonwoven fabric layer serving as a support by maintaining a tensile force and a supporting force of the hydrogel layer;
A hydrogel layer containing 0.1 to 3 wt% of a gelled polymer, 1 to 20 wt% of a polyhydric alcohol, 0.1 to 5 wt% of a crosslinking agent, 0.01 to 1 wt% of a preservative, 1 to 20 wt% of a skin moisturizer, Forming a foil mask pack,
The thickness of the hydrogel layer is 0.5 to 2.0 mm,
Wherein the metal thin film layer has a thickness of 0.5 to 50 占 퐉.
delete The method according to claim 1,
Wherein the nonwoven fabric layer is rayon. The method according to claim 1,
Wherein the adhesive layer has a thickness of 0.1 to 10 占 퐉. The method according to claim 1,
Wherein the adhesive layer is composed mainly of polyurethane and methyl ethyl ketone. The method according to claim 1,
Wherein the hydrogel layer is formed by applying a hydrogel composition having a viscosity of 500 to 20,000 cps. 0.1 to 3 wt% of gelled polymer is dispersed in 1 to 20 wt% polyhydric alcohol, 0.01 to 1 wt% of preservative, 1 to 20 wt% of a skin moisturizer and purified water are mixed and dissolved at a temperature of 50 to 80 캜, To 5% by weight of a crosslinking agent and stirring to prepare a hydrogel composition;
A metal thin film layer which blocks evaporation of moisture and an active ingredient of the hydrogel layer and blocks the heat of the skin and the moisture of the skin itself from being diverted to the outside to promote the circulation of the skin heat and absorb moisture and effective ingredients of the hydrogel layer quickly and efficiently Forming an adhesive layer having a thickness of 1 to 10 mu m by applying an adhesive to a metal thin film layer having a thickness of 0.5 to 50 mu m so that the nonwoven fabric layer is bonded;
Forming a nonwoven fabric layer by attaching rayon to the adhesive layer in order to maintain tension and supporting force of the hydrogel layer and serve as a support; And
Applying a hydrogel composition having a viscosity of 500 to 20,000 cps to the nonwoven fabric layer, and pressing the hydrogel composition to form a hydrogel layer having a thickness of 0.5 to 2.0 mm.