KR102608317B1 - Self-melting wet beauty sheet and its manufacturing method - Google Patents

Abstract

The present invention involves impregnating a nanomembrane cross-linked with a serum that does not contain purified water by electrospinning a spinning solution containing a water-soluble active ingredient with a skin-beautifying function, a film-forming water-soluble polymer, and a cross-linking agent dissolved in a solvent. A beauty sheet is manufactured, wherein the serum is a mixture of one or more ingredients of glycerol and butylene glycol, and when the beauty sheet impregnated with the serum is attached to the skin, the serum is present in moisture in the air and on the skin. It relates to a self-melting wet beauty sheet, characterized in that the beauty sheet melts itself by absorbing moisture and supplying it to the beauty sheet.
In the present invention, the glycerol or butylene glycol of the wet beauty sheet supplies moisture absorbed from the air and moisture absorbed from the skin to the beauty sheet, so that the cross-linking of the beauty ingredients is broken and melts on its own, then gradually melts into the skin. By allowing it to be absorbed into the skin, the inconvenience when using existing beauty sheets was improved and the problem of reduced beauty effect due to rapid drying was solved.

Description

Self-melting wet beauty sheet and its manufacturing method {SELF-MELTING WET BEAUTY SHEET AND ITS MANUFACTURING METHOD}

The present invention relates to a self-melting wet beauty sheet and a method of manufacturing the same. More specifically, by simply attaching a sheet of water-soluble beauty ingredients to the skin, the beauty sheet is cross-linked using only the moisture naturally absorbed from the air and the moisture present in the skin. This relates to a self-melting wet beauty sheet in which beauty ingredients are absorbed into the skin by breaking the cross-linking, and a method of manufacturing the same.

Most of the conventional water-soluble beauty sheet products are dry sheets, and in order to promote absorption into the skin, the dry sheet is dissolved in a moisture-containing liquid such as mist, serum, or cream.

Even looking at the recent example of a water-soluble beauty sheet containing a large amount of collagen, it is a product that attaches a dry collagen sheet to the skin and then sprays mist to melt the sheet.

However, for consumers who are not familiar with how to use this method, due to the characteristics of water-soluble beauty sheets that are thin and vulnerable to moisture, it is difficult to properly handle the product, such as some melting due to the moisture of the hands before use, or in the case of thin sheets, tearing. There are many cases where products are thrown away without being used, and there is a problem of frequent returns due to consumer dissatisfaction with the product.

In addition, due to the nature of the water-soluble beauty ingredient sheet, the reaction speed of dissolution in liquids such as mist or serum is too fast and it dries quickly again. Therefore, when the moisture evaporates after the dissolved beauty ingredient comes into contact with the skin, the skin becomes dry and the beauty effect is lost. It was inconvenient and inefficient to use, as I had to spray additional mist or apply a separate moisturizer because I couldn't get my hopes up.

Republic of Korea Patent No. 10-1454421, 'Beauty sheet composed of self-melting nanofibers and its manufacturing method' is a beauty sheet using this conventional method. After attaching a dry beauty sheet to the skin, mist is sprayed to moisturize the skin. Since this method is used by supplying or attaching a beauty sheet to the skin after washing the face, the reaction speed of the beauty sheet melting due to moisture is too fast, so there is a problem that the beauty ingredients evaporate before they are fully absorbed into the skin. Because it requires spraying, it is not a product that can be easily used anytime, anywhere.

Republic of Korea Patent No. 10-1440318 'Skin patch composition and method of manufacturing a skin patch using the same' states that since the patch contains moisture, it becomes sticky and sticks to the hand when attached to the skin, making it difficult to properly attach the patch to the skin. There is a problem.

Republic of Korea Patent Publication No. 10-2011-0074081, 'Skin disease improvement or skin care composition and method for manufacturing the same' is to manufacture a composition by separately adding a solvent capable of dissolving water-soluble polymer substances such as ethanol and purified water, thereby improving skin disease. And since active ingredients with skin beauty functions are added and emulsifiers and additives are added depending on the solubility of the active ingredients, manufacturing is complicated and storage is difficult.

Republic of Korea Patent No. 10-1454421 Republic of Korea Patent No. 10-1440318 Republic of Korea Patent Publication No. 10-2011-0074081

The present invention is intended to solve the problems described above, and is a wet sheet manufactured by impregnating a water-soluble beauty sheet with a serum that does not contain purified water. It is in the form of a sheet at the initial attachment stage, but over time, the glycerol or serum contained therein Beauty ingredients that have the property of absorbing moisture from the air, such as butylene glycol, supply the moisture absorbed from the air and the moisture absorbed from the skin to the beauty sheet, and as the cross-linking of the water-soluble ingredients is broken, the beauty ingredients are absorbed into the skin. The purpose is to provide a self-melting wet beauty sheet and a method of manufacturing the same, which can solve the inefficiencies of conventional dry sheets, such as inconvenience in use and reduction of beauty effect due to rapid drying by slowly being absorbed into the body.

In order to achieve the above-described object, the self-melting wet beauty sheet according to the present invention is cross-linked (cross-linked) by electrospinning of a spinning solution in which a water-soluble active ingredient with a skin care function, a film-forming water-soluble polymer, and a cross-linking agent are dissolved in a solvent. A beauty sheet is manufactured by impregnating the (linking) nanomembrane with a serum that does not contain purified water. The serum is a mixture of one or more ingredients of glycerol and butylene glycol, and the beauty sheet is impregnated with the serum. When the sheet is attached to the skin, the serum absorbs moisture in the air and moisture present on the skin and supplies it to the beauty sheet, causing the beauty sheet to melt itself.

Of 100% by weight of the nanomembrane, the film-forming water-soluble polymer accounts for 10 to 30% by weight, and the remainder is composed of water-soluble active ingredients with skin-beautifying functions and a cross-linking agent, which absorbs moisture distributed in the air and moisture present on the skin when used on the skin. As cross-linking is released through natural absorption, the bonds in the nanomembrane are broken and melted, and the water-soluble cosmetic ingredients are gradually absorbed into the skin.

It is preferable that the weight of the beauty sheet is 1.5 to 7 grams per 1 m ² . Here, the beauty sheet is manufactured by impregnating a cross-linked nanomembrane with a serum that does not contain purified water, and refers to a beauty sheet in the form of a final product that can be attached to the user's skin.

The water-soluble active ingredient with skin beauty function is one selected from Hydrolyzed Collagen, Centella asiatica, Vitamin C, Niacinamide, hyaluronic acid, adenosine, and Ceramide. Or, it consists of a mixture of two or more types, and the film-forming water-soluble polymers include polyvinyl alcohol (PVA), polyvinylpyrrolidone (PVP), pullulan, amylodextrin, and alginic acid. It is preferable to include one type or a mixture of two or more types selected from among them.

The water-soluble active ingredient with the skin care function self-melts and is gradually absorbed into the skin, and the film-forming water-soluble polymer self-melts and part of it is absorbed into the skin, and the remaining part corresponding to the polymer is not absorbed and is applied on the skin. It melts and disappears.

Of 100% by weight of the serum, glycerol accounts for 30 to 90% by weight, and the remainder may be composed of other ingredients that make up the serum.

Out of 100% by weight of the serum, butylene glycol accounts for 30 to 90% by weight, and the remainder may be composed of other ingredients that make up the serum.

It is most preferable that glycerol and butylene glycol account for 30 to 90 wt% of 100 wt% of the serum, and the remainder is comprised of other ingredients that make up the serum.

At this time, the glycerol and butylene glycol contained in the serum are mixed at a weight ratio of 30:70 to 40:60.

Meanwhile, in order to achieve the above object, the manufacturing method of the self-melting wet beauty sheet according to the present invention consists of the following steps.

Water-soluble active ingredients with skin-beautifying functions, film-forming water-soluble polymers, and cross-linking agents are mixed in a solvent.

A water-soluble nanomembrane is manufactured by electrospinning with a mixed spinning solution.

A beauty sheet is manufactured by impregnating the nanomembrane with serum that does not contain purified water.

The beauty sheet is dried and aged to maintain the shape of the patch.

A PET mesh cover is attached to one side of the self-melting wet beauty sheet created through this process, and a non-woven fabric is attached to the other side of the beauty sheet to create a final product that can be stored.

In the step of manufacturing the nanomembrane, the film-forming water-soluble polymer accounts for 10 to 30% by weight of 100% by weight of the nanomembrane, and the remainder is composed of a water-soluble active ingredient with a skin care function and a crosslinking agent, which is distributed in the air when attached to the skin and used. It is manufactured so that the bonds in the nanomembrane are broken and melted as cross-linking is released by naturally absorbing moisture present in the skin.

In the step of manufacturing the beauty sheet, glycerol and butylene glycol account for 30 to 90 wt% of 100 wt% of serum, and glycerol and butylene glycol are mixed at a weight ratio of 30:70 to 40:60. .

In the dry aging step, the maturation conditions are 24 to 48 hours at a temperature of 50 to 70 degrees Celsius so that it can be attached to the skin as a patch.

As described above, the present invention having the above configuration supplies moisture absorbed from the air by glycerol or butylene glycol of the wet beauty sheet and moisture absorbed from the skin to the beauty sheet to cross-link (Cross-link) the beauty ingredients. By breaking the link, it melts on its own and is gradually absorbed into the skin, thereby improving the inconvenience of using existing beauty sheets and solving the problem of reduced beauty effect due to rapid drying.

In addition, the beauty sheet manufactured by impregnating the nanomembrane with serum is dried and aged in the form of a patch and supplied to the user. Since the serum in the beauty sheet does not contain purified water, there is no need to worry about the beauty sheet becoming sticky due to moisture, making it easier for the user to carry the product. It is convenient, and the product is easy to use as it does not feel sticky even when touched with the hand to attach it to the skin.

In addition, when moisture absorbed from the air and moisture absorbed from the skin is supplied to the beauty sheet and the cross-links are broken and melted on their own, water-soluble active ingredients with skin beauty functions, such as glycerol and butylene glycol, slowly permeate into the skin. Water-soluble polymers that form a film gradually harden to form a very thin film, helping molten beauty ingredients to be slowly absorbed into the skin rather than evaporating into the air, making it more effective than existing products.

1 is a flowchart of a method for manufacturing a self-melting wet beauty sheet according to the present invention;
Figure 2 is a photograph of a nanomembrane crosslinked by electrospinning prepared according to the present invention;
Figure 3 is a photograph of a beauty sheet manufactured by impregnating a nanomembrane with a serum that does not contain purified water;
Figure 4 is an example showing the configuration of a finished product before a user attaches it to the skin by attaching a non-woven fabric to the bottom of the self-melting wet beauty sheet manufactured according to the present invention and combining a PET mesh cover to the top,
Figure 5 is a photograph showing the non-woven fabric attached to the self-melting wet beauty sheet manufactured according to the present invention.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms.

The examples herein are provided to make the disclosure of the present invention complete and to fully inform those skilled in the art of the scope of the invention.

And, the present invention is only defined by the scope of the claims.

Accordingly, in some embodiments, well-known components, well-known operations and well-known techniques are not specifically described in order to avoid ambiguous interpretation of the present invention.

In addition, the same reference numerals refer to the same components throughout the specification, and the terms used (mentioned) in the specification are for explaining embodiments and are not intended to limit the present invention.

In this specification, the singular also includes the plural unless specifically stated in the phrase, and elements and operations referred to as 'including (or, including)' do not exclude the presence or addition of one or more other elements and operations. .

Unless otherwise defined, all terms (including technical and scientific terms) used in this specification may be used with meanings that can be commonly understood by those skilled in the art to which the present invention pertains.

Additionally, terms defined in commonly used dictionaries are not interpreted ideally or excessively unless they are defined.

Hereinafter, preferred embodiments of the present invention will be described with reference to the attached drawings.

Referring to Figures 1 to 5, the self-melting wet beauty sheet according to the present invention is manufactured by the following method.

Step of mixing water-soluble active ingredients with skin-beautifying properties, film-forming water-soluble polymer, and cross-linking agent in a solvent (S100)

A spinning solution is prepared by mixing a water-soluble active ingredient with a skin care function, a water-soluble film-forming polymer, and a crosslinking agent together in a solvent.

The water-soluble active ingredient with skin beauty function is one selected from Hydrolyzed Collagen, Centella asiatica, Vitamin C, Niacinamide, hyaluronic acid, adenosine, and Ceramide. Alternatively, it is preferable to include a mixture of two or more types, but it may also be composed by mixing other ingredients that correspond to low-molecular-weight, water-soluble active ingredients with skin care functions.

Film-forming water-soluble polymers include one or a mixture of two or more selected from polyvinyl alcohol (PVA), polyvinylpyrrolidone (PVP), pullulan, amylodextrin, and alginic acid. It is preferable to configure it as such, but it can also be configured by mixing other components corresponding to water-soluble film-forming polymers.

Water-soluble active ingredients with skin care functions self-melt and are gradually absorbed into the skin, while film-forming water-soluble polymers self-melt and some are absorbed into the skin, while the remaining part, which corresponds to polymers, is not absorbed and melts and disappears after being applied on the skin. do.

The solvent can be water, alcohol, or a mixture thereof, and water was used in the present invention.

Crosslinking agents include TSA (para-toluene sulfonic acid), poly(urea-co-formaldehyde), TMPTMA (tri-methylopropane trimethacrylate), DVB (Divinylbenzene), boric acid, and gluta. Any one selected from aldehydes (glutaraldehyde) can be used. In the present invention, TSA was used.

In general, when dissolving a polymer material, it is desirable to prepare a spinning solution while heating and stirring, cool it to room temperature, and then add the crosslinking agent to a range where a crosslinking reaction does not occur in the spinning solution.

Therefore, in the present invention as well, when preparing the spinning solution, it is preferable that the addition of the crosslinking agent is carried out in the final step after dissolving the water-soluble active ingredient with skin-beautifying function and the water-soluble film-forming polymer in water.

Step of producing a water-soluble nanomembrane by electrospinning with a mixed spinning solution (S200)

Prepare cross-linked nanomembranes by electrospinning the spinning solution. By applying high voltage to the spinning solution, a polymer jet is ejected, the solvent is volatilized, and a nanomembrane with a nanoscale diameter is obtained.

Referring to Figure 2, it shows the collagen dry nanomembrane cross-linked by electrospinning. Figure 2 shows that hydrolyzed collagen is used as a water-soluble active ingredient with skin beauty function, polyvinyl alcohol (PVA) is used as a film-forming water-soluble polymer, and TSA (para-toluene sulfonic acid) is used as a cross-linking agent. A dry nanomembrane was manufactured by electrospinning with a spinning solution. The diameter of the nanofiber is 200㎚ (0.2㎛).

Referring to Figure 2, out of 100% by weight of the dry nanomembrane, the film-forming water-soluble polymer accounts for 10 to 30% by weight, and the remainder is composed of water-soluble active ingredients with skin-beautifying functions and a cross-linking agent, so that when used on the skin, the moisture distributed in the air and As the moisture present in the skin is naturally absorbed and the cross-linking is released, the bonds of the nanomembrane are broken and melted.

Specifically, the dry nanomembrane is made by mixing 10 to 30 wt% of film-forming water-soluble polymer and 1 to 2 wt% of cross-linking agent out of 100 wt% of the dry nanomembrane, and the remainder is made by mixing water-soluble active ingredients with skin care functions. If the crosslinking agent is less than 1% by weight, sufficient crosslinking is not achieved, and if the crosslinking agent is more than 2% by weight, the content of the crosslinking agent is too high, resulting in many crosslinking agents not participating in the crosslinking reaction. If the film-forming water-soluble polymer is less than 10% by weight, the sheet does not maintain its shape properly. If the film-forming water-soluble polymer exceeds 30% by weight, the strength of the sheet increases and the sheet does not melt even after 3 to 4 hours. A problem arises.

Since water-soluble active ingredients with skin care functions are mainly low molecules, they are sensitive to the degree to which they dissolve in moisture, so even for sheets of low weight (1.5 to 5.0 grams), about 20% by weight of water-soluble film is required to form a film to maintain the shape of the sheet to some extent. It is most desirable to use a polymer and mix the remainder with 78 to 79% by weight of a water-soluble active ingredient with skin-beautifying properties and 1 to 2% by weight of a crosslinking agent.

Step of manufacturing a beauty sheet by impregnating the nanomembrane with serum that does not contain purified water (S300)

The beauty sheet of Figure 3 is manufactured by impregnating the dry nanomembrane of Figure 2 with a serum that does not contain purified water. If the serum contains purified water, the nanomembrane will dissolve, so it is impregnated with a serum that does not contain purified water.

Serum is a mixture of one or more of Glycerol and Butylene Glycol, and when a beauty sheet impregnated with serum is attached to the skin, the serum absorbs the moisture in the air and the moisture present on the skin, forming a beauty sheet. By supplying it to, the beauty sheet is allowed to melt on its own.

In the present invention, impregnation with serum is described, but impregnation with essence instead of serum also falls within the scope of protection of the present invention. The difference between serum and essence is only in concentration, and serum is a formulation that has a slightly thicker feel than essence.

Glycerol and butylene glycol are basically similar in that they function as moisturizers. However, the feeling of use is a little different; glycerin has a slightly thicker feel, while butylene glycol has a slightly softer feel.

Glycerol has better water retention and moisturizing properties in terms of stability, but butylene glycol does not accumulate in the human body and is not toxic, so it is classified as a safe ingredient and is widely used.

Additionally, butylene glycol is used as a good solvent. In other words, butylene glycol has a moisturizing function and helps the ingredients mix well.

Glycerol has a lower ability to mix other substances than butylene glycol. So, you can mix either glycerol or butylene glycol with the serum, but when you mix the two properly, it absorbs moisture in the air and moisture existing on the skin and supplies it to the beauty sheet, allowing the beauty sheet to self-melt. It has good effect.

As explained above, there is no problem with the formation and self-melting of the wet beauty sheet even if only one of glycerol and butylene glycol is mixed with the serum.

In addition to glycerol and butylene glycol, serum is a mixture of moisturizing substances with other moisture absorption properties such as hyaluronic acid, sodium PCA, propylene glycol, ceramides, squalane, and panthenol. Although it can be used, glycerol and butylene glycol have the best moisture absorption ability and usage efficiency, and even when contained in large amounts, there are no problems such as skin irritation, side effects, or economic feasibility.

In the present invention, when using a mixture of either glycerol or butylene glycol, or when using a mixture of both glycerol and butylene glycol, the remaining ingredient of the serum is explained as a mixture of hyaluronic acid. However, in addition to hyaluronic acid, It is also possible to mix and use substances with other moisture-absorbing properties that can be mixed with the serum and are not excluded from the scope of protection of the present invention.

Glycerol accounted for 30 to 90% by weight of 100% by weight of serum, and the remainder was mixed with hyaluronic acid. In cases where there is a lot of moisture in the air, if glycerol is less than 50% by weight, the ability to absorb moisture in the air is low and self-melting does not occur well in the wet beauty sheet even after 1 hour. However, when the indoor humidity is high and the air contains a lot of moisture, such as in the summer, self-melting occurs easily even when the glycerol is in the range of 30% by weight to 50% by weight.

And when glycerol exceeded 90% by weight, the wet beauty sheet became stiff.

Out of 100% by weight of serum, butylene glycol accounted for 30 to 90% by weight, and the remainder was mixed with hyaluronic acid. As with glycerol, when there is a lot of moisture in the air, if butylene glycol is less than 50% by weight, the ability to absorb moisture in the air is reduced, so self-melting does not occur in wet beauty sheets even after 1 hour. However, when the indoor humidity is high and the air contains a lot of moisture, such as in the summer, self-melting occurs easily even in the range of 30% by weight to 50% by weight of butylene glycol.

And if butylene glycol exceeds 90% by weight, it is too sticky and is not suitable as a beauty sheet.

Out of 100% by weight of serum, glycerol and butylene glycol accounted for 30 to 90% by weight, and the remainder was mixed with hyaluronic acid. In this case, the sheet felt softer and was not sticky compared to the case where only glycerol or butylene glycol was mixed. And the self-melting effect that maintains skin moisture was also the most outstanding.

In cases where there is a lot of moisture in the air, if glycerol and butylene glycol are less than 45% by weight, self-melting does not occur well in wet beauty sheets because moisture in the air cannot be sufficiently absorbed. However, when the indoor humidity is high and the air contains a lot of moisture, such as in the summer, self-melting occurs easily even in the range of 30% by weight to 45% by weight of glycerol and butylene glycol.

And if glycerol and butylene glycol exceeded 90%, the beauty sheet dissolved easily, but was too sticky and was not suitable as a beauty sheet.

Specifically, when glycerol and butylene glycol are mixed at a weight ratio of 30:70 to 40:60, the texture of the beauty sheet, the extent to which it spreads rather than shrinks when attached to the skin, and the self-melting effect that maintains skin moisture are improved. Excellent.

In other words, when mixing more butylene glycol compared to glycerol, all factors such as the texture of the beauty sheet, the extent to which it spreads well when attached to the skin, and the duration of skin moisture when the beauty sheet absorbs moisture in the air and self-melts, etc. It showed excellent effects in this regard.

Referring to Figures 4 and 5, the self-melting wet beauty sheet is manufactured so that the weight is 1.5 to 7 grams per 1 m ² and the thickness is 0.003 to 0.015 mm.

If the weight of the self-melting wet beauty sheet is less than 1.5 grams per 1 m ² and the thickness is less than 0.003 mm, not only may the beauty sheet be torn when the non-woven fabric is removed from the beauty sheet after attaching the beauty sheet to the skin, but also the serum This absorbs the moisture in the air and the moisture existing on the skin and supplies it to the beauty sheet. Even if the beauty sheet melts on its own, the amount of moisture absorbed into the skin is small, reducing the skin beauty effect.

And if the weight of the self-melting wet beauty sheet is greater than 7 grams per 1 m ² and the thickness is greater than 0.015 mm, the serum absorbs moisture in the air and moisture existing on the skin and supplies it to the beauty sheet, so when the beauty sheet melts, it takes 3~ Even after 4 hours, the sheet does not dissolve well and remains, causing an unsightly problem.

As a result of repeated testing of a self-melting wet beauty sheet that absorbs and melts atmospheric moisture, the weight of the beauty sheet is the most problem-free and best when manufactured as a sheet with a standard weight of 2 to 5 grams per square meter (thickness of approximately 0.004 to 0.007 mm). It showed effect.

Step of drying and aging the beauty sheet to maintain the shape of the patch (S400)

The ripening conditions are 50 to 70 degrees Celsius for 24 to 48 hours so that it can be attached to the skin as a patch.

Referring to Figure 4, the collagen wet beauty sheet made through this process is an elastic sheet patch. The outer PET mesh cover is removed and the non-woven fabric and collagen wet beauty sheet are attached to the skin surface. When the non-woven fabric is removed, the thickness is about 0.005. The mm nano collagen wet beauty sheet is transparent and strongly adheres to the skin. As time goes by, the thickness of the sheet patch becomes thinner, especially from the center and melts to the edges, so the shape of the patch disappears and some residue remains. Tap it with toner, etc. to dissolve it.

Examples and Comparative Examples

Hereinafter, the present invention will be described in detail through examples and comparative examples. An average person skilled in the field to which the present invention pertains can modify the present invention into various other forms in addition to the composition described in the examples below. The examples below only illustrate the present invention, but the scope of the technical idea of the present invention is described in the examples below. It should not be interpreted as an intention to limit the scope.

[Example 1]

(1) The water-soluble active ingredient with skin beauty function is Hydrolyzed Collagen at about 72% weight ratio, polyvinyl alcohol (PVA), a film-forming polymer, at about 27% weight ratio, and the cross-linking agent is TSA at about 1% weight ratio. mix

(2) Impregnation with a serum containing no purified water mixed with 80% by weight of glycerol and 20% by weight of hyaluronic acid.

The nanofiber membrane manufactured through electrospinning has a basis weight of 4 grams per square meter, and the spinning solution is pure water used as a solvent for electrospinning, and the water-soluble active ingredient with skin beautification function, which is a component of the sheet, is hydrolyzed collagen. (Hydrolyzed Collagen) is mixed at a weight ratio of about 72%, polyvinyl alcohol (PVA), a film-forming polymer, is mixed at a weight ratio of about 27%, and the crosslinker is mixed at a weight ratio of about 1% TSA. When electrospinning nanosheets, 40 grams of P. P. Spunbond nonwoven fabric is added as a spinning plate. Then, collagen and polyvinyl alcohol are electrospun on top of it to produce a water-soluble collagen dry sheet (Figure 2).

The water-soluble collagen drying sheet is impregnated with a serum containing no purified water mixed with 80% by weight of glycerol and 20% by weight of hyaluronic acid, which have strong moisture absorption in the air.

In the step of manufacturing a collagen wet sheet, a PET mesh cover is laminated on the non-woven opposite side of the electrospun dry sheet without adhering to it (Figure 4), and the mesh side of the 3-ply sheet does not contain moisture such as purified water. Coat the surface with the unused serum using a roller.

The serum has a viscosity of about 3,000 cps to 5,000 cps for good flowability. If too much liquid is applied, the feel or dissolution of the sheet may be difficult, so about 20 m ² to 25 m ² per 1 kg was applied (Figure 4).

After the serum impregnation work is completed, dry aging is performed to strengthen the durability of the sheet and maintain the shape of the patch. The aging conditions were 55 to 60 degrees Celsius for 30 to 36 hours.

The collagen wet sheet (Figure 4) made through this process is an elastic sheet patch, the outer PET mesh cover is removed, the non-woven fabric and collagen sheet (self-melting wet beauty sheet) are attached to the skin surface, the non-woven fabric is removed, and the non-woven fabric is removed over time. The effect of self-melting was confirmed.

When the humidity in the air is high or the temperature is high, it is difficult to obtain average data, and when the humidity is less than 50% and the room temperature is less than 21℃, the degree of melting of the sheet varies depending on the dryness or oiliness of the wearer's skin. In the case of dry skin, moisture and oil from the skin have little effect on the melting of the sheet, whereas in the case of dry skin, even if the sheet absorbs moisture in the air, it is supplied directly to the skin, so the moisture content does not meet the melting conditions of the sheet, so rather than melting the sheet. Because it remains firmly on the skin, the experimental conditions were 21 degrees Celsius and 50% humidity to confirm the effect of self-melting.

[Example 2]

(1) The water-soluble active ingredient with skin beauty function is Hydrolyzed Collagen at about 79% weight ratio, polyvinyl alcohol (PVA), a film-forming polymer, at about 20% weight ratio, and the cross-linking agent is TSA at about 1% weight ratio. mix

(2) Impregnation with a serum containing no purified water mixed with 80% by weight of butylene glycol and 20% by weight of hyaluronic acid.

The nanofiber membrane manufactured through electrospinning has a basis weight of 4 grams per square meter, and the spinning solution is pure water used as a solvent for electrospinning, and the water-soluble active ingredient with skin beautification function, which is a component of the sheet, is hydrolyzed collagen. (Hydrolyzed Collagen) is mixed at a weight ratio of about 79%, polyvinyl alcohol (PVA), a film-forming polymer, is mixed at a weight ratio of about 20%, and the crosslinking agent is mixed at a weight ratio of about 1% TSA. When electrospinning nanosheets, 40 grams of P. P. Spunbond nonwoven fabric is added as a spinning plate. Then, collagen and polyvinyl alcohol are electrospun on top of it to produce a water-soluble collagen dry sheet (Figure 2).

The water-soluble collagen drying sheet is impregnated with a serum containing no purified water mixed with 80% by weight of butylene glycol and 20% by weight of hyaluronic acid, which have strong moisture absorption in the air.

In the step of manufacturing a collagen wet sheet, a PET mesh cover is laminated on the non-woven opposite side of the electrospun dry sheet without adhering to it (Figure 4), and the mesh side of the 3-ply sheet does not contain moisture such as purified water. Coat the surface with the unused serum using a roller.

The rest was carried out in the same manner as Example 1.

[Example 3]

(1) The water-soluble active ingredient with skin beauty function is Hydrolyzed Collagen at about 69% weight ratio, polyvinyl alcohol (PVA), a film-forming polymer, at about 30% weight ratio, and the cross-linking agent is TSA at about 1% weight ratio. mix

(2) Impregnate with a serum containing no purified water mixed with 80% by weight of glycerol and butylene glycol and 20% by weight of hyaluronic acid. At this time, the weight ratio of glycerol and butylene glycol is mixed at a ratio of 30:70.

The nanofiber membrane manufactured through electrospinning has a basis weight of 4 grams per square meter, and the spinning solution is pure water used as a solvent for electrospinning, and the water-soluble active ingredient with skin beautification function, which is a component of the sheet, is hydrolyzed collagen. (Hydrolyzed Collagen) is mixed at a weight ratio of about 69%, polyvinyl alcohol (PVA), a film-forming polymer, is mixed at a weight ratio of about 30%, and the crosslinker is mixed at a weight ratio of about 1% TSA. When electrospinning nanosheets, 40 grams of P. P. Spunbond nonwoven fabric is added as a spinning plate. Then, collagen and polyvinyl alcohol are electrospun on top of it to produce a water-soluble collagen dry sheet (Figure 2).

The water-soluble collagen drying sheet is impregnated with a serum that does not contain purified water, which is a mixture of 80% by weight of glycerol and butylene glycol and 20% by weight of hyaluronic acid, which have strong moisture absorption in the air. At this time, the weight ratio of glycerol and butylene glycol was mixed at a ratio of 30:70.

In the step of manufacturing a collagen wet sheet, a PET mesh cover is laminated on the non-woven opposite side of the electrospun dry sheet without adhering to it (Figure 4), and the mesh side of the 3-ply sheet does not contain moisture such as purified water. Coat the surface with the unused serum using a roller.

The rest was carried out in the same manner as Example 1.

[Example 4]

(1) The water-soluble active ingredient with skin beauty function is Hydrolyzed Collagen at about 82% by weight, polyvinyl alcohol (PVA), a film-forming polymer, at about 17% by weight, and the cross-linking agent is TSA at about 1% by weight. mix

(2) Impregnate with a serum containing no purified water mixed with 80% by weight of glycerol and butylene glycol and 20% by weight of hyaluronic acid. At this time, the weight ratio of glycerol and butylene glycol is mixed at a ratio of 40:60.

The nanofiber membrane manufactured through electrospinning has a basis weight of 4 grams per square meter, and the spinning solution is pure water used as a solvent for electrospinning, and the water-soluble active ingredient with skin beauty function, which is a component of the sheet, is hydrolyzed collagen. (Hydrolyzed Collagen) is mixed at a weight ratio of about 82%, polyvinyl alcohol (PVA), a film-forming polymer, is mixed at a weight ratio of about 17%, and the crosslinker is mixed at a weight ratio of about 1% TSA. When electrospinning nanosheets, 40 grams of P. P. Spunbond nonwoven fabric is added as a spinning plate. Then, collagen and polyvinyl alcohol are electrospun on top of it to produce a water-soluble collagen dry sheet (Figure 2).

The water-soluble collagen drying sheet is impregnated with a serum that does not contain purified water, which is a mixture of 80% by weight of glycerol and butylene glycol and 20% by weight of hyaluronic acid, which have strong moisture absorption in the air. At this time, glycerol and butylene glycol were mixed at a weight ratio of 40:60.

In the step of manufacturing a collagen wet sheet, a PET mesh cover is laminated on the non-woven opposite side of the electrospun dry sheet without adhering to it (Figure 4), and the mesh side of the 3-ply sheet does not contain moisture such as purified water. Coat the surface with the unused serum using a roller.

The rest was carried out in the same manner as Example 1.

[Comparative Example 1]

The water-soluble active ingredient with skin-beautifying properties is about 91% by weight of Hydrolyzed Collagen, about 8% by weight of polyvinyl alcohol (PVA), a film-forming polymer, and about 1% by weight of TSA as a cross-linking agent.

The rest was carried out in the same manner as Example 1.

[Comparative Example 2]

The water-soluble active ingredient with skin-beautifying properties is about 63% by weight of Hydrolyzed Collagen, about 36% by weight of polyvinyl alcohol (PVA), a film-forming polymer, and about 1% by weight of TSA as a cross-linking agent.

The rest was carried out in the same manner as Example 2.

[Comparative Example 3]

Impregnated with a serum containing no purified water mixed with 25% by weight of glycerol and 75% by weight of hyaluronic acid.

The rest was carried out in the same manner as Example 1.

[Comparative Example 4]

Impregnated with a serum containing no purified water mixed with 95% by weight of glycerol and 5% by weight of hyaluronic acid.

The rest was carried out in the same manner as Example 1.

[Comparative Example 5]

Impregnated with a serum that does not contain purified water mixed with 25% by weight of butylene glycol and 75% by weight of hyaluronic acid.

The rest was carried out in the same manner as Example 2.

[Comparative Example 6]

Impregnated with a serum that does not contain purified water mixed with 95% by weight of butylene glycol and 5% by weight of hyaluronic acid.

The rest was carried out in the same manner as Example 2.

[Comparative Example 7]

Impregnated with a serum that does not contain purified water mixed with 25% by weight of glycerol and butylene glycol and 75% by weight of hyaluronic acid. At this time, the weight ratio of glycerol and butylene glycol is mixed at a ratio of 30:70.

The rest was carried out in the same manner as Example 3.

[Comparative Example 8]

Impregnated with a serum containing no purified water mixed with 80% by weight of glycerol and butylene glycol and 20% by weight of hyaluronic acid. At this time, the weight ratio of glycerol and butylene glycol is mixed at a ratio of 60:40.

The rest was carried out in the same manner as in Example 4.

[Experiment result]

The beauty sheets of Examples 1 to 4 and Comparative Examples 1 to 8 prepared by the above method were cut into pieces of 5 cm in width and 5 cm in length, and were used by 20 healthy men and women for 2 to 4 hours. A survey was conducted regarding the after-effects. The score scale was 1 to 5, with 1 being “no,” 3 being “average,” and 5 being “very much.” Table 1 below shows the average scores of the survey results of 20 men and women.

As can be seen in Table 1 below, Examples 1 to 4 showed good effects in self-melting, moisturizing retention, and film formation, and the degree of sheet stickiness and sheet stiffness was good. And after a certain period of time (2 to 4 hours), the sheet melted and was absorbed into the skin, showing good aesthetics.

In particular, it was confirmed that the overall effect was better in Examples 3 and 4, which used a mixture of glycerol and butylene glycol, than in Examples 1 and 2.

In Comparative Example 1, the film was not formed properly because the content of PVA, a film-forming polymer, was less than the standard value of the present invention. It was self-melting, but the film was not formed well, causing problems with moisturizing.

In Comparative Example 2, the content of PVA, a film-forming polymer, exceeded the standard value of the present invention, so a strong film was formed. It was less effective in terms of self-melting and moisturizing retention, and there was a problem with the appearance of the sheet remaining unchanged after a certain period of time.

Comparative Example 3 is a case where the content of glycerol contained in serum is less than the standard value of the present invention. In this case, the effects of self-melting and moisturizing retention were reduced.

Comparative Example 4 is a case where the content of glycerol contained in serum exceeds the standard value of the present invention. In this case, not only did the sheet become stiff, but the overall completion of the product was also lacking.

Comparative Example 5 is a case where the content of butylene glycol contained in the serum is less than the standard value of the present invention. Comparative Example 6 is a case where the content of butylene glycol contained in the serum exceeds the standard value of the present invention. Comparative Examples 5 and 6 also showed poor product perfection in terms of overall effect. In particular, in Comparative Example 6, the degree of stickiness of the sheet was high due to the excessive content of butylene glycol.

Comparative Example 7 is a case where the content of glycerol and butylene glycol contained in the serum is less than the standard value of the present invention. In this case, self-melting did not occur easily due to insufficient absorption of moisture in the air, and moisturizing did not last properly.

Comparative Example 8 is a case where there is no problem with the total content of glycerol and butylene glycol contained in the serum, but glycerol is contained in greater amounts than butylene glycol. In this case, the effect was better than other comparative examples, but it was confirmed that it was inferior to Examples 1 to 4.

As described above, the present invention supplies moisture absorbed from the air and moisture absorbed from the skin to the beauty sheet, and when the crosslink is broken and melts on its own, water-soluble active ingredients, glycerol, and butylene glycol, which have a skin beauty function, are applied to the beauty sheet. Lycol, etc. slowly permeate into the skin, and at this time, the film-forming water-soluble polymer self-melts and part of it is absorbed into the skin, while the remaining part, which corresponds to the polymer, is not absorbed and melts and disappears after being applied on the skin, making it a self-made product with superior beauty effects compared to existing products. We provide melt wet beauty sheets.

The embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but are for explanation, and the scope of the technical idea of the present invention is not limited by these examples. The scope of protection of the present invention should be interpreted in accordance with the scope of the patent claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of rights of the present invention.

Claims (12)

A beauty sheet is made by impregnating a nanomembrane that is mutually cross-linked by electrospinning of a spinning solution containing water-soluble active ingredients with skin beauty functions, film-forming water-soluble polymers, and a cross-linking agent dissolved in a solvent, with a serum that does not contain purified water. Manufacturing,
The serum is a mixture of one or more ingredients of glycerol and butylene glycol, and when a beauty sheet impregnated with the serum is attached to the skin, the serum absorbs moisture in the air and moisture present on the skin to provide beauty care. By supplying it to the sheet, the beauty sheet melts on its own.
Among 100% by weight of the nanomembrane, the film-forming water-soluble polymer accounts for 10 to 30% by weight, the crosslinking agent accounts for 1% by weight, and the remainder is composed of water-soluble active ingredients with skin care functions, so that when used on the skin, the moisture distributed in the air and the skin As cross-linking is released by naturally absorbing the moisture present in the nanomembrane, the bonds are broken and melted.
The water-soluble active ingredient with the skin care function self-melts and is gradually absorbed into the skin, and the film-forming water-soluble polymer self-melts, some of which is absorbed into the skin, and some of which disappear after being applied on the skin,
A self-melting wet beauty sheet, characterized in that glycerol accounts for 30 to 90% by weight of 100% by weight of the serum, and hyaluronic acid accounts for the remainder.
delete In claim 1,
A self-melting wet beauty sheet, characterized in that the weight of the beauty sheet is 1.5 to 7 grams per 1 m ² .
In claim 1,
The water-soluble active ingredient with skin beauty function is one selected from Hydrolyzed Collagen, Centella asiatica, Vitamin C, Niacinamide, hyaluronic acid, adenosine, and Ceramide. Or, it consists of a mixture of two or more types, and the film-forming water-soluble polymers include polyvinyl alcohol (PVA), polyvinylpyrrolidone (PVP), pullulan, amylodextrin, and alginic acid. A self-melting wet beauty sheet comprising one or a mixture of two or more selected from among.
delete A beauty sheet is made by impregnating a nanomembrane that is mutually cross-linked by electrospinning of a spinning solution containing water-soluble active ingredients with skin beauty functions, film-forming water-soluble polymers, and a cross-linking agent dissolved in a solvent, with a serum that does not contain purified water. Manufacturing,
The serum is a mixture of one or more ingredients of glycerol and butylene glycol, and when a beauty sheet impregnated with the serum is attached to the skin, the serum absorbs moisture in the air and moisture present on the skin to provide beauty care. By supplying it to the sheet, the beauty sheet melts on its own.
Among 100% by weight of the nanomembrane, the film-forming water-soluble polymer accounts for 10 to 30% by weight, the crosslinking agent accounts for 1% by weight, and the remainder is composed of water-soluble active ingredients with skin care functions, so that when used on the skin, the moisture distributed in the air and the skin As cross-linking is released by naturally absorbing the moisture present in the nanomembrane, the bonds are broken and melted.
The water-soluble active ingredient with the skin care function self-melts and is gradually absorbed into the skin, and the film-forming water-soluble polymer self-melts, some of which is absorbed into the skin, and some of which disappear after being applied on the skin,
A self-melting wet beauty sheet, characterized in that butylene glycol accounts for 30 to 90% by weight of 100% by weight of the serum, and hyaluronic acid accounts for the remainder.
A beauty sheet is made by impregnating a nanomembrane that is mutually cross-linked by electrospinning of a spinning solution containing water-soluble active ingredients with skin beauty functions, film-forming water-soluble polymers, and a cross-linking agent dissolved in a solvent, with a serum that does not contain purified water. Manufacturing,
The serum is a mixture of one or more ingredients of glycerol and butylene glycol, and when a beauty sheet impregnated with the serum is attached to the skin, the serum absorbs moisture in the air and moisture present on the skin to provide beauty care. By supplying it to the sheet, the beauty sheet melts on its own.
Among 100% by weight of the nanomembrane, the film-forming water-soluble polymer accounts for 10 to 30% by weight, the crosslinking agent accounts for 1% by weight, and the remainder is composed of water-soluble active ingredients with skin care functions, so that when used on the skin, the moisture distributed in the air and the skin As cross-linking is released by naturally absorbing the moisture present in the nanomembrane, the bonds are broken and melted.
The water-soluble active ingredient with the skin care function self-melts and is gradually absorbed into the skin, and the film-forming water-soluble polymer self-melts, some of which is absorbed into the skin, and some of which disappear after being applied on the skin,
Out of 100% by weight of the serum, glycerol and butylene glycol account for 30 to 90% by weight, and the remainder is mixed so that hyaluronic acid accounts for, and glycerol and butylene glycol are mixed at a weight ratio of 30:70 to 40:60. A self-melting wet beauty sheet characterized in that.
delete Mixing a water-soluble active ingredient with a skin care function, a film-forming water-soluble polymer, and a crosslinking agent in a solvent;
Preparing a water-soluble nanomembrane by electrospinning with a mixed spinning solution;
Manufacturing a beauty sheet by impregnating the nanomembrane with a serum that does not contain purified water; and
Including the step of drying and aging the beauty sheet to maintain the shape of the patch,
In the step of manufacturing the nanomembrane,
Out of 100% by weight of nanomembrane, the film-forming water-soluble polymer accounts for 10 to 30% by weight, the cross-linking agent accounts for 1% by weight, and the remainder is composed of water-soluble active ingredients with skin care functions. When attached to the skin, the moisture distributed in the air and the skin are absorbed. As the cross-linking is released by naturally absorbing the moisture present in the nanomembrane, the bonds in the nanomembrane are broken, and the water-soluble active ingredient with the skin care function self-melts and is gradually absorbed into the skin, and the film-forming water-soluble polymer It is manufactured so that it self-melts and some is absorbed into the skin, and some disappears after being applied on the skin.
In the step of manufacturing the beauty sheet,
Out of 100% by weight of the serum, glycerol and butylene glycol account for 30 to 90% by weight, and hyaluronic acid accounts for the remainder, and glycerol and butylene glycol are mixed at a weight ratio of 30:70 to 40:60. ,
A method of manufacturing a self-melting wet beauty sheet, characterized in that when the beauty sheet impregnated with the serum is attached to the skin, the serum absorbs moisture in the air and moisture existing on the skin and supplies it to the beauty sheet, thereby causing the beauty sheet to melt itself.
delete delete In claim 9,
In the dry aging step,
A method of manufacturing a self-melting wet beauty sheet, characterized in that the aging condition is aging for 24 to 48 hours at a temperature of 50 to 70 ° C.