WO2020080847A1 - Hydrogel composition for elastic sheet mask, and elastic sheet mask comprising same - Google Patents

Abstract

A hydrogel composition and an elastic sheet mask comprising same, according to the present invention, allow stable attachment without the tearing of a gel form or the separation thereof from a support even though expansion and contraction repeatedly occur multiple times, and use an elastic support, thereby enabling convenient and stable attachment to a curved region of the body and having an advantage of facilitating activity even after attachment. In addition, even though the support is water-repellent treated, close adhesiveness is stably maintained, and thus elution or evaporation of a dosage form to the opposite side of a skin attachment part is prevented, so that an active ingredient can be 100% absorbed into only a skin region, the deterioration of the composition can be prevented by the blocking of external air, and clothes are not stained by the dosage form even through the clothes are worn after the elastic sheet mask is attached to the body, and thus the present invention is convenient.

Description

Hydrogel composition for stretchable mask pack and stretchable mask pack containing same

The present invention relates to a hydrogel composition for a stretchable mask pack, a method of manufacturing the same, and a stretchable mask pack containing the same, more specifically, a hydrogel composition having excellent adhesion to stably adhere to the mask pack support even during repeated stretch and It relates to a mask pack containing it.

Recently, various types of cosmetics are sold in the market, but among them, the mask pack is a product type that many consumers are constantly looking for due to its ease of use and excellent moisturizing effect even with a single use. Due to the convenience of attaching and removing the mask pack on the face, consumer preference has greatly increased, and recently, various types of skin care mask products have been actively developed and consumed.

Mask packs can be roughly classified into three types according to the formulation. The first is a product in which essence is added to a nonwoven fabric using synthetic or cellulose fibers. The second is a hydrogel-type mask product using natural gums. The third is a product using bio-cellulose, a high-molecular substance produced by fermenting microorganisms in fruit water such as coconut.

Among them, a hydrogel is a material having a three-dimensional hydrophilic polymer network structure using water as a dispersion medium, and absorbs moisture of about 20% or more of the total weight, so it not only has flexibility like natural tissue, but also viscoelastic, It has the advantages of skin adhesion and soft touch, and is manufactured and used in various types of packs to maintain skin beauty. Recently, it is manufactured and used in the form of a hydrogel pack that improves the moisturizing, nutrient supply and exfoliation effects of the pack. have.

The hydrogel mask pack is a formulation that melts in the skin in response to the skin temperature and has a mechanism of action in which the gel is gradually melted and absorbed into the skin under the influence of a higher skin temperature than when the gel is attached to the skin. In addition, the hydrogel has the advantage of applying the active ingredients necessary for the skin in a gel type.

As related prior arts, in Korean Patent Registration No. 10-1803451, 'Method of manufacturing a three-dimensional hydrogel mask pack using a non-thermal treatment method', and Korean Patent Registration No. 10-1902272, 'Hydrolysis having variable transparency in response to temperature. A gel mask pack composition and a method of manufacturing a hydrogel mask pack using the composition 'are described.

Recently, a mask pack has been developed that can be attached to any part of the body, not only the face, but also the arms and legs, but it is difficult to stably attach the pack to the curved parts of the body, and the formulation flows to attach the mask pack. It was a difficult problem to be active in.

The inventors of the present invention have studied to solve this problem, and have completed the present invention by developing a hydrogel mask pack composition that can be stably attached to an elastic support.

An object of the present invention is to provide a hydrogel composition for a stretchable mask pack that can be stably attached to a stretchable support.

Another object of the present invention is to provide a stretchable hydrogel mask pack comprising the hydrogel composition.

Another object of the present invention is to provide a method of manufacturing the stretchable hydrogel mask pack.

To achieve the above object, the present invention is water, glycerin, sodium polyacrylate, sodium polyacrylate (Ceratonia Siliqua (Carob) Gum), cetyl ethylhexanoate (cetyl ethylhexanoate) and xanthan gum (xanthan gum) It provides a hydrogel composition for a stretchable mask pack comprising a.

In the present invention, the composition is 32 to 40% by weight of water; Glycerin 22 to 28% by weight; 8 to 12% by weight of sodium polyacrylate; 8-13% by weight of Caratonia Siliqua Gum; 0.4 to 0.6% by weight of cetyl ethylhexanoate; And 5 to 7.5% by weight of xanthan gum.

The composition of the present invention is also palmitoyl isoleucine, hydrolyzed collagen, carrageenan, glucomannan, aluminum glycinate, polysorbate 80, tartaric acid, It may further include one or more additives selected from the group consisting of ethylhexylglycerin, vanyl butyl ether and silica.

In addition, the present invention includes water, glycerin, sodium polyacrylate, Caratonia Siliqua Gum, cetyl ethylhexanoate and xanthan gum on one side of the elastic support. It provides a stretchable hydrogel mask pack characterized in that the hydrogel is applied.

In the present invention, the stretchable support may be a water-repellent support.

The mask pack of the present invention may include a texture on the surface of the hydrogel.

In addition, the present invention provides a method of manufacturing a stretchable hydrogel mask pack comprising the following steps:

(a) Water, glycerin, sodium polyacrylate (sodium polyacrylate), carob bean gum (Ceratonia Siliqua Gum), cetyl ethylhexanoate (cetyl ethylhexanoate) and xanthan gum (xanthan gum) 38 to 85 Melt mixing at ° C;

(b) applying the molten mixture to one surface of the stretchable support; And

(c) aging the applied composition for 30 to 180 minutes to gel.

The method of the present invention, before the step (a), may further include the step of water-repellent treatment of the elastic support.

In the present invention, a texture may be formed on the surface of the hydrogel during aging of the composition applied in step (c), and texture may be formed after 15 to 25 minutes of aging of the applied composition.

The hydrogel composition and the stretchable mask pack comprising the same according to the present invention can be stably attached without tearing the gel form or separating from the support even after repeated stretching several times. It has the advantage of being able to conveniently and stably attach to a curved area and to facilitate activity even after attachment.

In addition, since the support maintains stable adhesion even when water-repellent, the formulation does not elute or evaporate to the opposite side of the skin attachment portion, so that the active ingredient can be absorbed 100% only in the skin area, and prevents deterioration of the composition by blocking external air. Not only can it be worn, it is convenient because it does not have any formulation on the clothes even if the garment is worn after being attached to the body.

1 shows an image of a mask pack manufactured according to an embodiment of the present invention.

Figure 2 shows the skin adhesion test results of the mask pack according to the experimental example of the present invention.

Figure 3 shows the results of the test of the binding force of the support of the mask pack according to the experimental example of the present invention.

Figure 4 shows the results of the formulation flatness test of the mask pack according to the experimental example of the present invention.

Figure 5 shows the results of the test for the formulation quality change of the mask pack according to the experimental example of the present invention.

Figure 6 shows the results of the stretch stability test of the mask pack according to the experimental example of the present invention.

7 is a comparison of the actual use of the mask pack according to the experimental example of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by a person skilled in the art to which the present invention pertains. In general, the nomenclature used herein is well known and commonly used in the art.

The present invention relates to a hydrogel composition that can be stably attached to a stretchable mask pack support.

The hydrogel composition of the present invention is stably attached to a stretchable support having a high elongation of about 200%, so that even after repeated stretching, the formulation may provide excellent adhesion that does not break or separate from the support.

The composition of the present invention includes water, glycerin, sodium polyacrylate, Caratonia Siliqua Gum, cetyl ethylhexanoate and xanthan gum.

The inventors of the present invention have found an optimum composition ratio of the composition that can stably adhere to a support having excellent elasticity after numerous experiments.

Specifically, the composition is 32 to 40% by weight of water; Glycerin 22 to 28% by weight; 8 to 12% by weight of sodium polyacrylate; 8-13% by weight of Caratonia Siliqua (Carob) Gum; 0.4 to 0.6% by weight of cetyl ethylhexanoate; And 5 to 7.5% by weight of xanthan gum.

The water is added as a skin conditioning agent and solvent. Water is preferably added in an amount of 32 to 40% by weight relative to the weight of the total composition. If the water content is too low, the solvent is insufficient and mixing of the ingredients is difficult. If the water content is too high, the viscosity decreases and the adhesion decreases.

The glycerin is a substance contained in the fat of animals and plants, and is used as a denaturant, a moisturizer, a skin protecting agent, a skin conditioning agent, and a viscosity reducing agent due to its strong viscosity and wettability and unique solubility. The glycerin is preferably added 22 to 28% by weight. When it exceeds the above range, the fat or oil component becomes excessive, which has an unfavorable effect on the formulation, and if insufficient, a problem occurs in that drying of the product proceeds in a short time.

The sodium polyacrylate is a hydrophilic polymer having a moisture content of up to about 800 times its own molecular weight, and is an important component to impart moisturizing power. When Na substitution is less than 50%, the desired degree of mucus (sticky form) is obtained. Difficult to acquire. The sodium polyacrylate may be added in an amount of 8 to 12% by weight based on the total weight of the composition, and when it is less than 8% by weight, the desired viscosity cannot be achieved, and when it is more than 12% by weight, the viscosity is too high or gelation It can interfere and hang like a porridge.

The carob bean gum (Ceratonia siliqua gum) is obtained by crushing the seeds of the mature fruit of the carob bean (Ceratonia siliqua). The carob bean gum is a locust bean seed, which is divided into a seed coat, an endosperm and an embryo part, and is obtained by separating and purifying only the end part. It is used as a thickener with excellent moisturizing ability, binder, emulsifier, and flavoring agent. The preferred addition ratio of the carob bean gum is 8 to 13% by weight based on the total weight.

The cetyl ethyl hexanoate is an ester component of cetyl alcohol and 2-ethyl hexanoic acid, which is characterized by spreading well without stickiness and having a low solidification point. The cetylethylhexanoate is preferably used in an amount of 0.4 to 0.6% by weight based on the weight of the total composition.

The xanthan gum is a white powder that is soluble in water, tasteless, odorless, highly viscous and exhibits pseudoplasticity. In addition, the xanthan gum has excellent heat resistance, and even when heated, the viscosity decreases little. In the present invention, the xanthan gum is preferably used in an amount of 5 to 7.5% by weight compared to the total composition.

The present invention also includes palmitoyl isoleucine, hydrolyzed collagen, carrageenan, glucomannan, aluminum glycinate, polysorbate 80, tartaric acid, ethylhexyl Additives such as glycerin, vanyl butyl ether, and silica may be further included.

Among the additives, palmitoyl isoleucine is a skin protecting agent, and is preferably added by 8 to 13% by weight of the total composition.

Hydrolyzed collagen refers to collagen obtained by hydrolysis of bone, skin, such as cow or pig, with acid, alkali, or enzymes, respectively, or by hydrolysis, and can be used as a skin conditioning agent. Hydrolyzed collagen is preferably used in an amount of 0.5 to 1.5% by weight based on the weight of the total composition.

Carrageenan refers to a polysaccharide obtained by hot water extraction from Irish moss of red algae, and the basic structure is a galactose polymer, which is used as a stabilizer and dispersant directly involved in gelation and used for vegetable skin. It is used as a conditioning agent. Carrageenan is preferably used in an amount of 0.3 to 1.0% by weight.

The glucomannan is contained in tubers of orchids, oleiferous trees, irises, lilies, and grass, and is separated into an insoluble copper complex in a solution extracted by pressing and heating with water. The glucomannan is preferably used in an amount of 0.1 to 0.3% by weight, and when used in excess, the product becomes too solid and hard to use as a mask pack.

The aluminum glycinate (aluminium glycinate), polysorbate 80, tartaric acid, ethyl hexyl glycerin, vanillyl butyl ether, silica, etc., additives may be contained in each 0.01 to 0.1% by weight, pH adjusting agent, skin conditioning A function of agents, surfactants, absorbents, and the like can be added.

The present invention also relates to a mask pack comprising a hydrogel composition as described above.

The mask pack has a form in which the hydrogel is applied to one surface of the elastic support. The hydrogel of the present invention is applied to the stretchable support and can be stably attached without causing a phenomenon in which the gel form is torn or separated from the support even if the stretch is repeated multiple times.

As the elastic support, an elastic fabric having an elongation of about 200% may be used, for example, 20, 30, and 40 cotton fibers, 30 cotton single span (95% cotton, 5% span) ), Polyester (Polyester, T / W (Tetron-Polyester), it is preferred to use a fabric such as polyurethane (Polyurethane).

Since the mask pack of the present invention uses an elastic support, it can be conveniently and stably attached to any curved part of the body, and has an advantage of easy activity even after attachment.

In the present invention, the stretchable support may be water-repellent. The water-repellent treatment may be water-repellent treatment using a known water-repellent treatment method, for example, the elastic fabric is wax-based, fluorine-based, zirconium-based, ethylene urea-based, methylol amide, pyridinium salt-based, paraffin-based water-repellent, etc. Water repellent treatment may be carried out using a water repellent agent.

The hydrogel composition of the present invention has the advantage of being able to stably adhere to a water-repellent fabric even though it contains water and oil, as well as excellent adhesion to the elastic support.

By using the water-repellent fabric as described above, since the formulation does not elute or evaporate to the opposite side of the skin attachment portion, it is possible to ensure that 100% of the active ingredient is absorbed only in the skin area, and block external air to prevent deterioration of the composition. , Since the formulation does not seep into the opposite side of the skin attachment part, it is convenient because the formulation does not adhere to clothes even if the garment is worn after being attached to the body.

The mask pack of the present invention may also include a texture on the surface of the hydrogel. The texture may form a texture in which all roll convex irregularities are formed on the surface of the gel by separating the film having irregularities on the gel in a semi-solid state using a rolling machine or the like and peeling off the film.

By forming a texture on the gel surface in this way, the mask pack can be more stably attached to the skin, thereby preventing the pack from being pushed and moved after attachment.

The mask pack of the present invention can be prepared by a method comprising the following steps:

(a) melting and mixing the hydrogel composition at 38 to 85 ° C;

(b) applying the molten mixture to one surface of the stretchable support; And

(c) aging the coated composition for 30 minutes and 180 minutes for gelation.

The hydrogel composition of the present invention may be melted at 38 to 85 ° C. to become a liquid state, and uniformly mixed in a liquid state, and then applied to the support.

The molten mixture liquid phase hydrogel composition may be applied to a stretchable support using a known method. For example, the application is roll coating, bar coating, film coater coating, casting after doping And the like.

The coating is preferably performed to a thickness of 0.3 to 2.5mm. In the case of the hydrogel mask of the prior art, it is prepared by applying a thickness of 0.5 to 2 mm and compressing it. If the thickness is less than 0.5 mm, a problem of tearing the hydrogel occurs when attached to the skin, and when it exceeds 2 mm, it adheres to the skin. Poor flowing problems occur. On the other hand, the hydrogel mask pack of the present invention adjusts the occlusal ratio of the elastic support and the composition well, so that the hydrogel has very high adhesion to the skin tissue of each body part without tearing or flowing down, as well as a cosmetic agent or drug to be delivered. Depending on the nature and purpose of the thin or thick coating is possible.

In the aging step, the applied composition may be aged at 15 to 25 ° C for 30 to 180 minutes. When the aging step is performed, the hydrogel composition becomes a highly stable semi-solid gel state, and can be stably attached to the elastic and / or water repellent support. The existing hydrogel mask pack without a support layer had to undergo a process of cooling for at least 60 minutes and heat treatment in a dryer for at least 10 hours in order to solidify the hydrogel, but the present invention can reduce the solidification step and time by acting as a support layer of the elastic fabric. In addition, it is possible to increase the stability of the formulation and shorten the production time.

The hydrogel in the semi-solid state formed by aging can be completely in contact with the skin to block the inflow of air, and there is no discomfort when using it because the formulation does not flow. In addition, the aged semi-solid gel has a very high viscosity of 100 to 10,000 cps, and does not cause hypersensitivity reactions due to the adhesive because the gel itself adheres only to the skin without a separate adhesive component or adhesive.

The manufacturing method of the present invention may further include a step of repelling the elastic support before the step (a). The water repellent treatment may be performed by treating the elastic support with a water repellent agent such as a wax-based, fluorine-based, zirconium-based, ethylene urea-based, methylol amide, pyridinium salt-based, or paraffin-based water repellent.

The manufacturing method of the present invention may further include the step of forming a texture on the surface of the hydrogel during aging of the composition applied in step (c). The texture forming step is preferably performed 15 to 25 minutes after the start of aging. By forming a texture in the middle of the aging of the composition, it is possible to manufacture a product that is finally cured with a texture formed on the surface.

Example

Hereinafter, the present invention will be described in more detail through examples. It will be apparent to those skilled in the art that these examples are only for illustrating the present invention, and the scope of the present invention is not to be construed as being limited by these examples.

Preparation Example: Preparation of elastic hydrogel mask pack

The components of Table 1 below were mixed in the main mixer tank, and stirred while heated to 80 ° C. to prepare a molten mixture.

After purchasing the water-repellent stretched fabric (Welkron) twice and cutting it to a size suitable for the experiment, the molten mixture was applied to a thickness of 2 mm each.

After application, it was rested at room temperature for 20 minutes to form a hydrogel in the form of a gel on raw sugar, and the fabric was formed on the gel, and then peeled off to form a texture on the surface of the hydrogel.

Subsequently, the mask pack was formed by resting for an additional 100 minutes to form a semi-solid hydrogel.

1 shows a mask pack prepared using the hydrogel composition of Example 1. The mask pack has good elasticity and water repellency, the texture is formed evenly, and it can be confirmed that the skin is well adhered without the crying part.

Ingredient name	Example 1	Comparative Example 1	Comparative Example 2	Comparative Example 3	Comparative Example 4	Comparative Example 5
Purified water	35.00	34.00	42.00	35.00	35.00	36.00
glycerin	25.00	23.00	18.00	20.20	28.50	28.00
Sodium polyacrylate	10.00	9.80	10.00	15.00	10.00	7.50
Carob Bean Sword	10.60	14.00	10.60	10.60	10.60	10.60
Cetylethylhexanoate	0.50	0.30	0.50	0.30	0.50	0.80
Xanthan gum	6.30	6.30	6.30	6.30	2.80	4.50
Palmitoyl isoleucine	10.54	10.54	10.54	10.54	10.54	10.54
Hydrolyzed collagen	0.99	0.99	0.99	0.99	0.99	0.99
Carrageenan	0.62	0.62	0.62	0.62	0.62	0.62
Glucomannan	0.20	0.20	0.20	0.20	0.20	0.20
Aluminum glycinate	0.05	0.05	0.05	0.05	0.05	0.05
Polysorbate 80	0.05	0.05	0.05	0.05	0.05	0.05
Tartaric acid	0.05	0.05	0.05	0.05	0.05	0.05
Ethylhexylglycerin	0.04	0.04	0.04	0.04	0.04	0.04
Vanyl butyl ether	0.03	0.03	0.03	0.03	0.03	0.03
Silica	0.03	0.03	0.03	0.03	0.03	0.03
(weight%)	100.00	100	100	100	100	100

Experimental Example 1: Mask Pack Physical Properties Test

1-1. Skin adhesion

In order to check the skin adhesion of the mask pack, after attaching the mask packs of Example 1 and Comparative Example 1 to the back of the arm, grasping the center portion of the pack and detaching it was observed.

As shown in FIG. 2, the mask pack of Example 1 exhibited excellent adhesion, so that it was not easily peeled off except the hand-held portion, but the mask pack of Comparative Example 1 exhibited a shape of falling over the entire skin at once.

Therefore, it can be confirmed that the composition mixed in the composition ratio of the present invention has excellent skin adhesion.

1-2. Support bonding force

In order to confirm the support force of the mask pack, the shape of the gel portion of the mask packs of Example 1 and Comparative Example 2 was observed.

3, the mask pack of Example 1 is visually confirmed that the hydrogel is uniformly bonded to the support. On the other hand, in the mask pack of Comparative Example 2, it was confirmed that the hydrogel was not uniformly bonded, and the support was exposed in part.

Therefore, it can be confirmed that the composition mixed in the composition ratio of the present invention has excellent support bonding strength.

1-3. Formulation flatness

The formulation flatness of the mask pack skin attachment portions of Example 1 and Comparative Example 3 was confirmed.

As shown in FIG. 4, the gel of Example 1 can be confirmed to be uniformly and flatly applied, but the gel of Comparative Example 3 can be confirmed to have a non-uniform thickness.

1-4. Formulation deterioration

To determine the degree of deterioration of sweat and moisture in the mask pack, the hydrogel portion was changed after dropping artificial sweat and purified water of pH 6.0 ± 0.2 into the mask packs of Example 1 and Comparative Example 4 with an eyedropper. Was visually confirmed.

As shown in Fig. 5, the hydrogel of Example 1 retained its original shape without any change in sweat and moisture, but it can be seen that the gel of Comparative Example 4 was changed and melted by moisture.

1-5. Stretch stability

In order to confirm that adhesion is maintained even after repeated stretching of the stretchable support, the mask packs of Example 1 and Comparative Example 5 were stretched and repeated 10 times to check the shape of the gel.

As shown in FIG. 6, it can be seen that the hydrogel of Example 1 still maintains the adhesion to the support even after repeated stretching and the form is completely attached to the support. On the other hand, the gel of Comparative Example 5 can be confirmed that the gel was torn and dropped by stretching.

Experimental Example 2: Comparison of the actual use of the mask pack

In order to confirm the actual use of the mask pack of the present invention, the mask pack of Example 1 was attached to the neck part having the most flexion in the body, and was lived for 1 hour.

Also, for comparison, a 3D lifting wrinkle neck mask of N company and a cellulose neck patch of Y company were purchased, attached to the neck, and lived for 1 hour, and then the image is shown in FIG. 7.

The mask pack of the present invention can be confirmed to be stably and firmly attached to the neck part having a lot of bends, but it can be confirmed that all of the existing products have a surface crying or the formulations agglomerated, and the sheet is pushed.

As described above, a specific part of the contents of the present invention has been described in detail. For those skilled in the art, this specific technique is only a preferred embodiment, and the scope of the present invention is not limited thereby. It will be obvious. Accordingly, the substantial scope of the present invention will be defined by the appended claims and their equivalents.

Claims (10)

1. A hydrogel composition for a stretchable mask pack comprising water, glycerin, sodium polyacrylate, Caratonia Siliqua Gum, cetyl ethylhexanoate and xanthan gum.
2. According to claim 1,

   32 to 40% by weight of water, based on the weight of the total composition; Glycerin 22 to 28% by weight; 8 to 12% by weight of sodium polyacrylate; 8-13% by weight of Caratonia Siliqua (Carob) Gum; 0.4 to 0.6% by weight of cetyl ethylhexanoate; And 5 to 7.5% by weight of xanthan gum, a hydrogel composition for a stretchable mask pack.
3. According to claim 1,

   Palmitoyl isoleucine, hydrolyzed collagen, carrageenan, glucomannan, aluminum glycinate, polysorbate 80, tartaric acid, ethylhexylglycerin, vanillylbutyl A hydrogel composition for a stretchable mask pack further comprising at least one additive selected from the group consisting of ether and silica.
4. On one side of the elastic support

   Characterized in that a hydrogel comprising water, glycerin, sodium polyacrylate, Ceratonia Siliqua Gum, cetyl ethylhexanoate and xanthan gum is applied, Elastic hydrogel mask pack.
5. The method of claim 4,

   A stretchable hydrogel mask pack, characterized in that the stretchable support is a water-repellent support.
6. The method of claim 4,

   Stretched hydrogel mask pack, characterized in that it comprises a texture (texture) on the surface of the hydrogel.
7. Method of manufacturing a stretchable hydrogel mask pack comprising the following steps:

   (a) Water, glycerin, sodium polyacrylate (sodium polyacrylate), carob bean gum (Ceratonia Siliqua Gum), cetyl ethylhexanoate (cetyl ethylhexanoate) and xanthan gum (xanthan gum) 38 to 85 Melt mixing at ° C;

   (b) applying the molten mixture to one surface of the stretchable support; And

   (c) aging the applied composition for 30 to 180 minutes to gel.
8. The method of claim 7,

   Before step (a),

   A method of manufacturing a stretchable hydrogel mask pack, further comprising the step of water-repellent treatment of the stretchable support.
9. The method of claim 7,

   In the step (c), characterized in that during the aging of the applied composition to form a texture on the surface of the hydrogel, a method of manufacturing a stretchable hydrogel mask pack.
10. The method of claim 9,

    Method for producing a stretchable hydrogel mask pack, characterized in that after performing the aging of the applied composition for 15 to 25 minutes to form a texture.

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