KR101919564B1 - Functional cosmetic face sheet - Google Patents

Abstract

The present invention relates to a functional cosmetic face sheet, and more specifically, to a functional cosmetic face sheet which includes a first nanofiber layer with hydrophobicity and a second nanofiber layer with hydrophilicity bonded to each other through thermal compression, thereby preventing the evaporation of a cosmetic preparation, having excellent effective permeability, and having improved skin adhesion properties. Also, the functional cosmetic face sheet of the present invention includes antimicrobial and UV blocking components within a nanomembrane itself, and thus an antimicrobial agent and a UV blocking agent do not directly contact the skin to minimize skin irritation.

Description

Functional Beauty Face Sheet {FUNCTIONAL COSMETIC FACE SHEET}

More particularly, the present invention relates to a functional beauty face sheet, and more particularly, to a functional beauty face sheet comprising a first nanofiber layer having hydrophobicity and a second nanofiber layer having hydrophilicity bonded to each other by thermocompression bonding to prevent evaporation of the cosmetic preparation, And to provide a functional beauty face sheet having enhanced skin adhesion.

The beauty mask sheet is obtained by impregnating a base material sheet such as a nonwoven fabric or a gel with a cosmetic preparation and attaching it to the skin, thereby being used for supplying the skin with the functions of whitening, wrinkle improvement, moisturizing and the like.

In general, the face sheet for cosmetics uses a water-soluble base material for the absorption of cosmetic preparations, but when the packaging is opened and applied to the skin, the evaporation of the cosmetic preparation suddenly occurs, and the cosmetic preparation permeates the skin barrier There is a limit that the cosmetic preparation is evaporated into the air before the effective ingredient of the cosmetic preparation is transferred to the percutaneous tissue.

In order to prevent the evaporation of the cosmetic preparation, a water-insoluble mask sheet having a foil, a film or a waterproof layer has been developed. Korean Patent Laid-Open No. 10-2016-0148085 discloses a mask-shaped gold foil pack having a thickness of 0.1 to 0.2 탆 . However, such a water-insoluble mask sheet is not easy to control the pores, thereby interfering with the user's skin breathing, causing stiffness, and the skin penetration of the cosmetic preparation is not superior to that of the water-soluble mask sheet.

On the other hand, in order to smoothly transfer the cosmetic preparation impregnated on the cosmetic mask sheet to the skin, it is necessary to bring the cosmetic mask sheet itself into close contact with the skin. In this connection, Korean Patent No. 10-1690569 discloses a non- To provide a method for manufacturing a nonwoven fabric for a beauty mask pack which is excellent in adhesion and scrubbing sound.

In addition, Korean Patent No. 10-1614657 discloses a functional mask pack capable of providing an active ingredient to the facial skin and having an earring so that the erect activity can be performed. However, in order to prevent the skin from coming off from the skin, A film waterproof layer for preventing evaporation, a cooling sheet portion for providing a cooling effect, and a cushion for enhancing the adhesion are simply stacked, and the weight of the skin is high when applied to the skin, which has a limit to cause a frustration.

In order to absorb a lot of cosmetic preparation, the conventional mask pack is formed with a nonwoven fabric sheet or a thicker sheet. The thicker the sheet, the heavy and frigid feeling is felt in use, the skin adhesion is poor, It is troublesome that the user unfolds the unfused portion by hand.

At this time, the user may be exposed to microorganisms and pollutants in the process of touching the mask pack sheet. Therefore, in order to prevent degeneration and corruption caused by microorganisms and pollutants, most mask pack manufacturers use preservatives and antibacterial components When the impregnated cosmetic preparation is directly supplied to the skin, a user having sensitive skin may cause skin irritation.

On the other hand, workers who work in outdoor leisure activities or outdoors for a long period of time protect their skin by applying ultraviolet ray protection cream or hats and muffs to protect their skin from UV rays.

The ultraviolet screening cream must be uniformly applied to the skin to obtain a uniform ultraviolet screening effect. It is difficult to apply uniformly. It is difficult to apply uniformly, and it is difficult to expect a continuous effect due to moisture and sweat. The hat and muff cause frustration, There is a limit to one part of ultraviolet rays.

Busy modern people need beauty face sheet which can effectively block ultraviolet ray for outdoor activities and sports and to manage skin at the same time. However, ultraviolet ray shielding effect, adhesion force, ventilation and the like are not suitable for the existing technology.

In most of the facial face sheet products, most of them are used for obtaining effects such as moisturizing, wrinkle improvement, and whitening in the room, and they are not actually developed for outdoor use.

In other words, it is necessary to develop a beauty face sheet which is capable of supplying an effective ingredient smoothly to the skin while preventing the evaporation of the cosmetic preparation, at the same time, having excellent air permeability and wearing feeling, and having antibacterial and ultraviolet shielding ingredients.

Korean Patent Publication No. 10-2016-0148085 (mask-shaped gold foil pack) Korean Patent No. 10-1690569 (Method for producing nonwoven fabric for cosmetic mask pack having excellent adhesion and wiping performance) Korean Patent No. 10-1614657 (Functional mask pack)

It is an object of the present invention to solve the above-mentioned problems, and an object of the present invention is to provide a hydrophilic nanofiber layer having hydrophilicity and a hydrophilic second nanofiber layer which are thermally bonded to each other to prevent evaporation of the cosmetic preparation, And to provide a functional beauty face sheet having enhanced adhesion.

Another object of the present invention is to provide a functional beauty facial sheet having antimicrobial and ultraviolet shielding components on the nano-membrane itself and minimizing skin irritation because the antimicrobial agent and the ultraviolet screening agent do not directly contact the skin.

In order to solve the above-mentioned problems, the functional beauty facial sheet of the present invention is produced by electrospinning a first polymer solution having hydrophobic property, and comprises a first nanofiber layer having a lower surface treated with a plasma and a second nanofiber layer formed below the first nanofiber layer, And a second nanofiber layer formed by electrospinning a second polymer solution having hydrophilicity, wherein the first nanofiber layer and the second nanofiber layer are thermocompression-bonded.

Another embodiment of the functional beauty facial sheet of the present invention includes a first nanofiber layer produced by electrospinning a first polymer solution having hydrophobicity and having a lower surface treated with plasma,

A second nanofiber layer formed on the lower side of the first nanofiber layer and manufactured by electrospinning a second polymer solution having hydrophilicity and a base layer formed on the first nanofiber layer, The second fiber layer, the second nanofiber layer, and the base layer are thermocompression-bonded.

The first nanofiber layer and the second nanofiber layer each have an average fiber diameter of 50 nm to 1000 nm and an average pore size of 0.1 to 1.0 m.

The plasma treatment is characterized in that the oxygen plasma is performed for 5 to 30 minutes at an intensity of 5 to 50 kV.

The thermocompression bonding is performed at a temperature of 50 to 150 DEG C and a pressure of 0.5 kgf / cm2 to 9.0 kgf / cm2.

The first polymer solution comprises a base polymer, a functional additive, a solvent and a water repellent agent, and the second polymer solution comprises a base polymer, a functional additive and a solvent.

The base polymer may be selected from the group consisting of polyurethane (PU), polyacrylonitrile (PAN), nylon, polyvinylidene fluoride (PVdF), polyhydroxybutyrate (PHB), polyethersulfone (PES), polyetherimide ), Polycaprolactone (PCL), polylactic acid (PLA), poly-L-lactic acid (PLLA), and combinations thereof.

The functional additive may be at least one selected from the group consisting of an ultraviolet screening agent, an antimicrobial agent, a whitening agent, a skin tone modifier, a peptide, a flavonoid, an antioxidant, a detergent, a free radical scavenger, a moisturizer, an antiacne agent, an antioxidant, , A water absorbent, and combinations thereof.

The water repellent agent is characterized in that it comprises at least one of silicon carbide, silicon oxycarbide, silica, silicon oxynitrocarbide, iron silicate, molybdenum carbosilide, and combinations thereof.

The antimicrobial agent is characterized in that it contains any one selected from the group consisting of a surfactant, a phenol compound, a manilide compound, a urea compound, a fluorine compound, a glucide compound, an organometallic compound and an inorganic metal compound and a combination thereof .

The UV-blocking agent includes at least one of P-aminobenzoic acid (PABA), Shea butter, Octylmethoxy cinnamate, Octyl salicylate, Benzophenon-2-12, Oxybenzone, Mexoryl-LX, Phenyl benzimidazole sulfonic acid, Avobenzone, Zinc Oxide and Titanium Dioxide. .

And the particle size of the ultraviolet screening agent is 50 nm to 300 nm.

Wherein the base layer is at least one of a nonwoven fabric selected from the group consisting of rayon, cellulose, nylon, polyester, and combinations thereof and a knit fabric using a tricot method.

As described above, according to the functional beauty facial sheet of the present invention, the first nanofiber layer having hydrophobicity and the second nanofiber layer having hydrophilicity are thermally bonded to each other to prevent the evaporation of the cosmetic preparation, , And the skin adhesion is enhanced.

Further, according to the functional beauty facial sheet of the present invention, the nanomembrane itself is provided with antibacterial and ultraviolet shielding components, so that the antimicrobial agent and the ultraviolet screening agent are not directly brought into contact with the skin, thereby minimizing skin irritation.

1 is a sectional view of a functional beauty facial sheet according to a first embodiment of the present invention;
2 is a sectional view of a functional beauty face sheet according to a second embodiment of the present invention;
3 is a sectional view (A) and an example of application (B) of a functional beauty facial sheet according to a third embodiment of the present invention.
4 is a comparative photograph showing the water repellency test results of Example 3, Comparative Example 3, and Comparative Example 4. Fig.
5 is a SEM photograph showing the distribution of the degree of distribution of the ultraviolet screening agent according to the particle size.

Specific features and advantages of the present invention will be described in detail below with reference to the accompanying drawings. The detailed description of the functions and configurations of the present invention will be omitted if it is determined that the gist of the present invention may be unnecessarily blurred.

More particularly, the present invention relates to a functional beauty face sheet, and more particularly, to a functional beauty face sheet comprising a first nanofiber layer having hydrophobicity and a second nanofiber layer having hydrophilicity bonded to each other by thermocompression bonding to prevent evaporation of the cosmetic preparation, And to provide a beauty face sheet having enhanced skin adhesion.

The term 'cosmetic preparation' of the present invention means 'composition' and 'functional additive' including 'active ingredient' or active ingredient having functions such as antibacterial, ultraviolet barrier, whitening, moisturizing and wrinkle improvement, Can be interpreted in the same sense.

The term " nanomembrane " of the present invention means a membrane formed by assembling nanofibers and nanofibers formed by electrospinning a polymer solution, and the 'nanofiber layer' means a fiber layer formed by the nanomembrane.

1 is a cross-sectional view of a functional beauty face sheet according to a first embodiment of the present invention.

The functional cosmetic face sheet 1 according to the first embodiment of the present invention is manufactured by electrospinning a first polymer solution having hydrophobic property and has a lower surface treated with a plasma treated first nanofiber layer 100, And a second nanofiber layer 200 formed by electrospinning a second polymer solution having a hydrophilic property. The first nanofiber layer and the second nanofiber layer are formed by thermocompression bonding.

The first nanofiber layer 100 is a layer exposed to the outside and has hydrophobicity so that the cosmetic preparation does not easily evaporate from the outside.

The second nanofiber layer 200 is a layer contacting with the skin and has hydrophilicity, so that the impregnation property and absorbability of the cosmetic preparation are excellent, and the active ingredient of the cosmetic preparation is provided to the skin.

That is, the second nanofiber layer 200 is hydrophilic and is faded for cosmetic preparation. When applied to the skin, the cosmetic preparation is directly supplied to the skin, and the first nanofiber layer 100 is formed of the second nanofiber layer So that the cosmetic preparation is not easily evaporated to the outside, so that the effective ingredient of the cosmetic preparation can have a sufficient time to be absorbed to the skin percutaneous.

The first nanofiber layer 100 and the second nanofiber layer 200 are fabricated by electrospinning the first polymer solution and the second polymer solution, respectively, so that the first nanofiber layer 100 and the second nanofiber layer 200 can be formed into a thin film as compared with the conventional nonwoven fabric, And the surface area can be maximized.

The first polymer solution and the second polymer solution commonly include a base polymer, a functional additive, and a solvent, and further include a water repellent agent in the case of the first polymer solution.

As another embodiment of the first polymer solution, it is also possible to prepare the first polymer solution including only the base polymer, the solvent and the water repellent agent without adding the functional additive.

As another embodiment of the first polymer solution, it is also possible to prepare the first polymer solution only by adding the hydrophobic base polymer and the solvent without adding the water repellent agent.

The base polymer may be selected from the group consisting of polyurethane (PU), polyacrylonitrile (PAN), nylon, polyvinylidene fluoride (PVdF), polyhydroxybutyrate (PHB), polyethersulfone (PES), polyetherimide ), Polycaprolactone (PCL), polylactic acid (PLA), poly-L-lactic acid (PLLA), and combinations thereof.

As the solvent, a solvent comprising dichloromethane, dimethylformamide, dimethyl sulfoxide, dimethylacetamide, methyl ethyl ketone, chloroform, acetone, water, formic acid, acetic acid, butyl acetate, cyclohexane, THF and a combination thereof may be used .

The added weight percentage of the solvent may vary depending on the type and mixing characteristics of the polymer, but is not limited to 0.1 to 30 parts by weight based on 100 parts by weight of the total polymer solution in order to have appropriate physical properties for forming fibers Lt; / RTI >

It is also possible to add an additive such as a conductivity enhancer to the polymer solution (the first polymer solution and the second polymer solution) in order to improve the electrospinning property when manufacturing nanofibers using the electrospinning method.

The functional additive may be selected from the group consisting of an ultraviolet screening agent, an antibacterial agent, a whitening agent, a skin tone modifier, a peptide, a flavonoid, an antioxidant, a detergent, a free radical scavenger, a moisturizer, Sebum absorbent, water absorbent, and combinations thereof. However, the present invention is not limited thereto.

The functional additive may be added in an amount of 0.01 to 10 parts by weight based on 100 parts by weight of the base polymer and 100 parts by weight of the solvent. If the amount is less than 0.01 part by weight, the effect of the functional additive is hardly expected. If the amount is more than 10 parts by weight, It is preferable not to deviate from the above range because it is difficult to control the radiation characteristic.

In addition, the functional additive may be incorporated in the polymer solution to have the nanomembrane itself produced by electrospinning, but it is also possible to further impregnate the functional additive after the preparation of the cosmetic face sheet.

For example, in manufacturing a nanomembrane, an ultraviolet screening agent and an antimicrobial agent may be added as a functional additive to prepare a nanofiber layer and a facial face sheet, and then the whitening agent and the moisturizing agent may be further impregnated in the facial face sheet.

The ultraviolet light blocking agent may be selected from the group consisting of P-aminobenzoic acid (PABA), Shea butter, Octylmethoxy cinnamate, Octyl salicylate, Benzophenon-2-12, Oxybenzone, Mexoryl-LX, Phenyl benzimidazole sulfonic acid, Avobenzone, Zinc Oxide, Titanium Dioxide, May be selected from the group consisting of

In this case, the particle size of Zinc Oxide and Titanium Dioxide, which are inorganic UV blocking agents, is 50 nm to 300 nm.

If the average particle size of the inorganic UV blocking agent is less than 50 nm, aggregation may occur. When the inorganic UV blocking agent is used in an amount exceeding 300 nm, precipitation may occur and the inorganic UV blocking agent may not uniformly mix in the polymer solution.

More preferably, Zinc Oxide and Titanium Dioxide coated on the surface of apatite hydroxide can be used. As a result, Zinc Oxide and Titanium Dioxide minimize the decomposition of organic substances contained in functional materials and cosmetic preparations, The antimicrobial action and the ultraviolet shielding ability for decomposing the microorganisms present in the microorganism can be expressed at the same time.

To illustrate a specific _{example, Cax (PO 4) y ·} (0H) having a molecular formula of z [x = 5z, y = 3z, z = 1 ~ 50], typical molecular formula is _{Ca 10 (PO 4) 0 6} ( 0H) in distilled water to cover the _second of the apatite hydroxide Zinc Oxide or ^{Titanium Dioxide Na + (213mM),} K + (7.5mM), Ca 2+ (50mM), Mg 2 + (1.5mM), Cl - (147.8 ^{_{mM), HCO 3 - (6mM}} ), HPO₄ 2- (12mM), SO₄ by mixing the aqueous solution of apatite hydroxide, 100, based on the weight of 0,5 to 30 parts by weight of the aqueous solution was added to ^2- (0.75mM) as a high speed of 300 to 800rpm Zinc oxide or Titanium Dioxide is added and dispersed and stirred at 100 to 500 rpm for 30 minutes to 1 hour and 30 minutes to uniformly place apatite hydroxide on the surface of Zinc Oxide or Titanium Dioxide. After that, the apatite hydroxide is grown for 24 to 48 hours in a state where the agitation is stopped. The product is heated at a temperature of 150 ° C. to 350 ° C. for 1 hour and then a pressure of 50 to 400 bar is applied to obtain a more stable product.

In the case of titanium dioxide, any of the anatase type, rutile type and brookite type may be used.

The coating ratio of apatite hydroxide is preferably 5 to 15 parts by weight based on 100 parts by weight of Zinc Oxide or Titanium Dioxide.

The hydroxide apatite may be coated on the entire surfaces of Zinc Oxide and Titanium Dioxide, but it may be partially coated such as a muskmelon and a protrusion shape.

The ultraviolet screening agent may be added in an amount of 0.01 to 3 parts by weight based on 100 parts by weight of the mixture of the base polymer and the solvent. When the amount is less than 0.01 part by weight, ultraviolet ray blocking effect is hardly expected. If the amount is more than 3 parts by weight, Therefore, it is preferable not to deviate from the above range.

The antimicrobial agent may be at least one selected from the group consisting of a surfactant, a biguanide, an alcohol, a phenol, an anilide, a urea, an iminazole and a thiapendazole, an isothiazolone, a triazine, a nitrile, a fluorine, It is possible to use any one of antimicrobial agents belonging to the natural, organometallic and inorganic metal types. More preferably, the antimicrobial agent is a surfactant, a phenol compound, an anilide compound, a urea compound, a fluorine compound, , An organometallic compound and an inorganic metal compound, and a combination thereof.

As the surfactant, a fatty acid ester is used. Specific examples thereof include, but are not limited to, mistsic acid, palmitic acid and stearic acid ester.

The phenol compound may be Biosol, Thymol, O-phenyl phenol, PCMX, or para-chloro-meta-xylenol.

PCMX is highly safe and highly safe due to its chemical and physical stability and low toxicity.

As the anilide compound, trichlorocarban may be used, but is not limited thereto.

The urea system may use a compound having a propyl iodide group, but is not limited thereto.

The fluorine-based compound may be a compound having a dichlorofluoromethyl group, but is not limited thereto.

As the saccharide-based compound, quaternary chitosan can be used, but it is not limited thereto.

Examples of the natural compound include, but are not limited to, urushiol, cardanol, and grapefruit seed extract.

Examples of the organometallic compound include Na-omadine, Zn-omadine, oxindine, acrylonitrile, and N-stearoyl-L-glutamic acid.

Examples of the inorganic metal compound include Na ₂ O, Al ₂ O ₃ , SiO ₂ , CaO, P ₂ O ₅ , ZrO ₂ , B ₂ O ₃ and AgNO ₃ .

The antimicrobial agent may be added in an amount of 1 to 5 parts by weight based on 100 parts by weight of the mixture of the base polymer and the solvent. When the amount of the antimicrobial agent is less than 1 part by weight, antimicrobial effect is hardly expected. If the amount is more than 5 parts by weight, It is preferable that the range does not deviate.

The water repellent is selected from the group consisting of silicon carbide, silicon oxycarbide, silica, silicon oxynitrocarbide, iron silicate, molybdenum carbosilide, and combinations thereof.

The water repellent agent may contain 0.05 to 5 parts by weight based on 100 parts by weight of the mixture of the base polymer and the solvent. If the water repellent agent is added in an amount of less than 0.05 part by weight, water repellency and oiling effect are hardly expected. And the control of the thermocompression process are difficult.

More specifically, if the water repellent agent is added in an amount exceeding 5 parts by weight based on the weight of the base polymer and the solvent, a high-intensity plasma treatment is required at the surface treatment or a thermal compression treatment at a higher temperature and pressure is required. It is preferable that the nano fiber layer is damaged or the porosity is difficult to control, so that it does not exceed the above range.

The average fiber diameter of the nanofiber nanofiber layer produced through electrospinning is preferably 50 nm to 1000 nm, and the average size of the pores is preferably 0.1 to 1.0 mu m.

When the average fiber diameter of the nanomembrane is less than 50 nm, it is difficult to secure sufficient physical properties. Therefore, when the mask pack is used, there is a possibility of tearing. When the thickness exceeds 1000 nm, porosity and specific surface area are decreased, so that the impregnation amount of the cosmetic preparation decreases. .

If the average pore size is less than 0.1 탆, the respiration degree of the skin is considerably reduced, and the skin feeling becomes uncomfortable. If the average pore size is more than 1.0 탆, the volatile property of the cosmetic preparation is promoted, and the functional material of the cosmetic preparation is dried before penetrating the skin It is preferable not to deviate from the above range.

If the basis weight is less than 0.5 g / m < 2 >, the space for absorbing and retaining the cosmetic preparation is small and the impregnability is low. In addition, when the basis weight is more than 50 g / m < 2 >, it is preferable not to deviate from the above range because the porosity is large and the impregnation property of the cosmetic preparation is increased,

As a result, the nano fiber layer has a porosity of 90 to 99%, and it is possible to smoothly discharge skin respiration and skin heat.

The lower surface of the first nanofiber layer may be modified to have a hydrophilic surface to improve bonding properties between the first nanofiber layer and the second nanofiber layer. The surface modification method may be plasma treatment, corona discharge treatment, chemical treatment, or the like. However, it is more preferable to perform the plasma treatment.

More specifically, in order to improve the bonding property between the first nanofiber layer having hydrophobicity and the second nanofiber layer having hydrophobicity, the lower surface of the first nanofiber layer abutting the second nanofiber layer is subjected to plasma treatment so that the lower surface of the first nanofiber layer is hydrophilic Thereby making it possible to prevent the first nanofiber layer and the second nanofiber layer from being more firmly bonded and peeled off from each other due to the cosmetic preparation and moisture.

When the lower surface of the first nano fiber layer is subjected to plasma treatment, a functional group having any hydrophilic property selected from the group consisting of a carboxyl group, a hydroxyl group, an amine group, and a combination thereof may be substituted on the lower surface of the first nano fiber layer.

Specifically, the plasma treatment may be performed using a gas capable of imparting a hydrophilic group to the lower surface of the first nanofiber layer using a low-temperature plasma or a radio frequency (RF) plasma.

The gas capable of imparting the hydrophilic group may be any one selected from the group consisting of ammonia gas, argon gas, oxygen gas, and combinations thereof, but is more preferably oxygen plasma treated.

Further, it is preferable that the flow rate of the gas is 5 to 500 sccm during the plasma treatment, and that the oxygen plasma is treated for 5 to 50 kV for 5 to 30 minutes so as to minimize the damage of the first nano fiber layer It can be modified to have hydrophilicity.

The first nanofiber layer and the second nanofiber layer are thermocompression bonded, and the thermocompression bonding process is performed at a temperature of 50 to 150 DEG C and a pressure of 0.5 kgf / cm2 to 9.0 kgf / cm2.

If the temperature and pressure are less than the above-mentioned temperature and pressure, the first nanofiber layer and the second nanofiber layer may not be bonded or non-uniformly bonded to each other, resulting in peeling of the nanofiber layer during impregnation or use of the cosmetic preparation,

If the temperature and pressure of the thermocompression bonding are exceeded, it is difficult to control the pore and air permeability due to the breakage of the nanomembrane due to the excessive melting of the first nanofiber layer and the second nanofiber layer, It is preferable not to deviate from the temperature and the pressure.

2 is a cross-sectional view of a functional beauty face sheet according to a second embodiment of the present invention.

The functional cosmetic face sheet 2 according to the second embodiment of the present invention is manufactured by electrospinning a first polymer solution having hydrophobic property and has a lower surface treated with a plasma treated first nanofiber layer 100, And a base layer (300) formed on the first nanofiber layer, wherein the second nanofiber layer (200) is formed by electrospinning a second polymer solution having hydrophilicity, the first nanofiber layer , The second nanofiber layer and the base layer are thermocompression bonded.

The functional beauty face sheet 2 according to the second embodiment further includes a base layer 300 formed on the upper side of the first nanofiber layer 100, Similar to the functional beauty facial sheet 1, if it is the above-mentioned contents, it is not described in duplicate and is omitted.

The base layer 300 may be used as a support for supporting the first nanofiber layer and the second nanofiber layer, or may be used as an auxiliary substrate for impregnating a cosmetic preparation.

The method of bonding the base layer 300 may include, but is not limited to, a method of thermocompression bonding, a method of forming a hot melt layer by electrospinning, a laminating method of a dot type, and a method of using an adhesive.

More preferably, the base layer 300 is thermally bonded together with the first nanofiber layer 100 and the second nanofiber layer 200.

The base layer 300 may be formed of a material selected from the group consisting of rayon, cellulose, nylon, polyester, and combinations thereof.

The base layer may be formed of a nonwoven fabric, a woven fabric, or a knitted fabric. However, the support for supporting the first nanofiber layer and the second nanofiber layer of the beauty face sheet of the present invention has durability and, at the same time, But it is more preferable to use a knitted base layer or a combination of a knitted fabric and a nonwoven fabric.

Knitting is a method of manufacturing a fabric by connecting a circular and a circular ring by making a circular ring with thread fibers, and it is classified into a thread piece connected with a loop and a loop in a radial direction and an upper piece connected with a loop and a loop in an upward direction. Fabrics made by knitting can give more elasticity and flexibility than other methods.

Specific tissue formation methods through knitting include Tricot, Rachel, Milanese, Jacquard, Plain Stitch, Purl Stritch, Rib Stitch, Pile Stitch, Knitted Stitch, and Tuck Stitch.

More preferably, a tricot method can be used. The tricot is a type of warp knitting yarn knitted using a warp knitting machine comprising three guide bars for guiding yarns, and it is possible to form a delicate and dense structure, And has elasticity, so that it can be stably bonded at the time of bonding with the nanofiber layer and the skin adhesion force can be increased.

At this time, the circumference and shape of the base layer 300 may be the same as or larger than the first nanofiber layer and the second nanofiber layer.

More preferably, the base layer 300 is formed to be larger than the first nanofiber layer and the second nanofiber layer, so that the user can grasp the edge of the base layer and attach the same to the skin. This prevents the first nanofiber layer 100 and the second nanofiber layer 200 formed of a thin film from directly touching each other and is hygienic and prevents the first nanofiber layer 100 and the second nanofiber layer 200 from being damaged .

It is preferable that the base layer has a basis weight of 7.0 to 70 g / m 2 and a thickness of 8.0 to 500 탆. If it is less than the basis weight and the thickness, it tends to be torn or wrinkled and weak in tensile strength, If it exceeds the above range, it is preferable not to deviate from the above range because the weight is high and the adhesiveness is low when it is adhered to the skin.

The average diameter of the yarns constituting the base layer is preferably 500 to 2000 nm.

As another example of the base layer, a nonwoven fabric layer may be formed by laminating and bonding the knitted fabric layer and the nonwoven fabric layer on both sides of the knitted fabric layer.

The joining of the knitted layer and the nonwoven fabric layer may be performed by a method such as needle punching, water entraining and thermal bonding, but is not limited thereto.

As a result, impregnability of the cosmetic preparation can be improved by the nonwoven fabric layer while enhancing the stretchability and adhesion by the knitted fabric layer.

Fig. 3 shows (A) a sectional view and (B) an application example of a functional beauty facial sheet according to a third embodiment of the present invention.

The functional cosmetic face sheet 3 according to the third embodiment of the present invention comprises a first nanofiber layer 100 formed by electrospinning a first polymer solution having hydrophobic property and having a lower surface treated with plasma, A second nanofiber layer 200 formed by electrospinning a second polymer solution having hydrophilicity on the lower side of the second nanofiber layer 200 and a cut portion 310 formed at the center of the second nanofiber layer, And a base layer (300) formed to be laterally separable, wherein the first nanofiber layer, the second nanofiber layer, and the base layer are thermocompression bonded.

The base layer 300 according to the third embodiment acts as a support for supporting the first nanofiber layer 100 and the second nanofiber layer 200 until the beauty face sheet 3 is applied to the skin, It can serve as a releasing layer to be peeled off.

The functional beauty face sheet 3 according to the third embodiment is the same as the functional beauty face 3 according to the second embodiment except that the functional beauty face sheet 3 according to the third embodiment further includes a base layer 300 formed above the second nanofiber layer and including cut- The same as in the case of the sheet (2), if the contents described above are not duplicated, they are omitted.

The cutout portion 310 may be formed along the center line of the center of the base layer 300, that is, the face shape, but not limited thereto, and may be formed at one or more positions.

More specifically, the cut-out portion 310 may be formed not only in the center but also in one or more directions biased to the right and left sides, preferably at a distance of 2 cm or more from the edge. When the cut-out portion is formed to be less than 2 cm from the edge of the base layer, it is preferable that the cut-off portion is formed at a distance of 2 cm or more since the edge portion is close to the edge face and a sufficient usable space can not be secured.

The cutout portion 310 is formed by a broken line or a dotted line. The length of the broken line or the broken line (cut portion) is preferably 0.5 to 8 mm, and the broken line or dotted line (cut portion) The length ratio of the nanofiber layer can be prevented from being torn and damaged due to unintentional separation and separation due to external force at the line length and length ratio, It can be easily separated and cut out by the user.

The base layer may be surface-treated prior to forming the cut-out portion. The base layer is prevented from being chewed or wrinkled during the rolling operation by the cutting blade for forming the cut-out portion by surface treatment, It is possible to smoothly remove the nano fiber layer without damaging it.

The surface treatment of the base layer may be performed by a method selected from the group consisting of a singing method, a Sikette method, a fusing method, a calender method and an embossing method, and a combination thereof.

Further, in order to protect the nano fiber layer, it is also possible to attach a release film such as polypropylene or polyethylene to one side of the nano fiber layer, and the film may or may not have a cut-out portion.

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

My 1 nanofiber layer  Produce

60 g of a water repellent agent (silicon carbide), 20 g of an ultraviolet screening agent (titanium dioxide having an average particle diameter of 150 nm) and 20 g of an antibacterial agent (cardanol) were added to 300 g of a solvent (DMF) and stirred for 30 minutes. 1700 g of polyurethane was added, 1 < / RTI >

The prepared first polymer solution was put into an electrospinning device to prepare a nanomembrane having a basis weight of 10.0 g / m 2 and then subjected to a thermal rendering treatment to produce a first nanofiber layer having a thickness of 6 μm.

One side (lower surface) of the first nanofiber layer thus prepared was treated with an oxygen plasma of 10 kV and a flow rate of 300 sccm for 5 minutes.

My 2 nanofiber layer  Produce

20 g of an ultraviolet screening agent (titanium dioxide) and 20 g of an antimicrobial agent (cardanol) were added to 300 g of a solvent (DMF) and stirred for 30 minutes. 1700 g of polyurethane was added and stirred for 24 hours to prepare a second polymer solution.

The prepared second polymer solution was put into an electrospinning device to prepare a nanomembrane having a basis weight of 10.0 g / m 2 and then subjected to a thermal rendering treatment to produce a second nanofiber layer having a thickness of 6 micrometers.

Thermocompression

The prepared first nanofiber layer and second nanofiber layer were thermocompression bonded at 90 DEG C under a condition of 3 to 4 kgf / cm < 2 > for 5 minutes.

The average diameters of the first nanofiber layer and the second nanofiber layer were varied to determine the air permeability, average pore size, skin respiration, and dryness according to the diameter of the nanomembrane.

The test method for each evaluation item is as follows.

- Air permeability: measured by ASTM D 737 method using Textest FX3300 analyzer and average value after 5 measurements.

- Average pore size: Measured by ASTM F316-03 method using PMI Capillary Flow Porometer analyzer and average value after 5 measurements.

- Skin respiration degree: 5 male and female subjects were examined. The same amount of cosmetic preparation (15g) was applied to the face, followed by attaching the prepared face sheet and keeping it for 30 minutes. The results were divided into five steps and the mean values were shown. (5: no frustration, 4: a little frustration, 3: frustrating but no problem in using, 2: frustrating, 1: not available)

- Skin dryness: 5 male and female subjects were examined. The same amount of cosmetic preparation (15 g) was applied to the face, and then the prepared face sheet was attached and dried for 30 minutes. Were measured by dividing them into five levels, and the average value was shown. (5: no drying, 4: slightly dry, 3: after 15 minutes drying, 2: after 10 minutes drying, 1: not available)

Table 1 below shows evaluation items and results according to the average diameter of the nanomembrane.

UNIT Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Average diameter of nanomembrane fibers nm 50 300 500 1000 30 1200 Air permeability CFM
@ 125pa 28 55 72 85 18 - Average size of pores ㎛ 0.1 0.3 0.8 0.9 0.05 1.3 Breathing of skin 5 out of 5 4 5 5 5 2 5 Dryness of the skin 5 out of 5 5 5 5 4 5 2

It can be seen that as the fiber average diameter increases, the air permeability rises proportionally when the nanomembranes have the same basis weight.

The measured air permeability is measured in CFM units by passing air at 125 pascal pressure. When the air permeability is lower than 25 CFM, the skin feels frustrating.

In the case of Comparative Example 2, the tearing phenomenon occurs due to the pressure during the measurement, so that the measurement is merely a measure. As the thickness of the diameter becomes thick, the product tends to be easily torn by the uneven thickness and tensile strength in the form of cotton candy.

Also, it can be seen that as the fiber average diameter increases, the average size of the pores increases proportionally when the nanomembranes have the same basis weight.

The average size of the pores shows the average pore size by measuring the same area. When the average pore size is less than 0.1 탆, the skin breathability is remarkably lowered, which causes the users to feel uncomfortable. On the other hand, when the size exceeds 1.0 탆, Thus promoting the volatility of the cosmetic preparation, thereby proving that it is a functional substance of the cosmetic preparation and causing the composition to dry before penetrating into the skin.

Therefore, when the average diameter of the nanomembrane is less than about 50 nm, the nanomembrane may be densely formed (pore size is small) to reduce the breathability of skin respiration. When the average diameter of the nanomembrane exceeds 1000 nm, The size and the thickness of the pores of the membrane may not be easily controlled.

In order to confirm the water repellency and oil repellency according to the addition of the water repellent agent, Comparative Example 3 in which a water repellent agent was not added and Comparative Example 4 in which 60 g of a hydrophilic agent (lauramin oxide) was added were prepared and conducted in the above- And compared with Example 3.

The average diameters and basis weights of the nanofiber membranes of Comparative Example 3 and Comparative Example 4 were the same as those of Example 3.

The evaluation methods of water repellency and oil repellency are as follows.

- Water repellency: Water droplets were dropped on the specimen at a height of 10 cm from the height of 0.5 cm. The degree of water repellency was divided into A, B, C, and D grades. (Class A has a contact angle of 60 to 90 °, Class B has a contact angle of 30 to 59 °, Class C has a contact angle of 5 to 29 °, and Class D has a contact angle of less than 5 °.)

- Oil repellency: Measured by AATCC 118 method and the average value is shown based on the mass production measured 3 times. The foot induction grade is up to 8, and the higher the grade, the higher the oil repellency.

4 is a comparative photograph showing the water repellency test results of Example 3, Comparative Example 3 and Comparative Example 4, and Table 4 shows the results of water repellency test of Example 3, Comparative Example 3 and Comparative Example 4, (A) shows a photograph of the water repellency test of Example 5 (Class A), (B) of Comparative Example 3 (Class C) and Comparative Example 4 (Class D).

UNIT Example 5 Comparative Example 3 Comparative Example 4 Water-repellent Rating A C D Oil cast Rating 7 3 One

The cosmetic face sheet according to the embodiment of the present invention is excellent in water repellency and oil repellency and can prevent the cosmetic preparation from being evaporated, thereby enhancing the retention of the cosmetic preparation and increasing the skin absorbency of the cosmetic preparation .

Example 1 (particle size of the ultraviolet screening agent: 150 nm), 30 nm (Comparative Example 5), and 500 nm (Comparative Example 6) were prepared in order to confirm the distribution according to the particle size of the ultraviolet screening agent.

5 is a SEM photograph showing the distribution of the degree of distribution of the ultraviolet screening agent according to the particle size.

(a) shows the case where the particle size of the ultraviolet screening agent is 30 nm, (b) is 500 nm, and (c) is 150 nm.

In the case of Comparative Example 5, it was confirmed that the ultraviolet screening agents did not uniformly coat the nanofibers due to the agglomeration of the ultraviolet screening agents.

In the case of Comparative Example 6, it was confirmed that the ultraviolet screening agent was not evenly applied. It was judged that the ultraviolet screening agent was not uniformly applied to the nanofibers due to the precipitation phenomenon during stirring of the polymer solution.

In the case of Example 1, it was confirmed that the ultraviolet screening agent was uniformly applied.

Table 3 shows the results of the antibacterial test of Example 1.

It was measured according to KS K 6093 standard and Klebsiella pneumoniae ATCC 4352 was used as a published strain.

BLANK 2.0 Initial number of bacteria / ml 2.0 x 10 ⁴ 2.0 x 10 ⁴ After 18 hours, the number of bacteria / ml 1.8 x 10 ⁷ <10 Bacteriostatic reduction rate 99.9%

As a result, the beauty face sheet according to the example of the present invention showed a bacteriostatic reduction rate of 99.9%, indicating that the antimicrobial activity was excellent.

Table 4 shows the antimicrobial test results and UV blocking performance test results of Example 1, respectively.

The test equipment used was a UV transmittance analyzer, the light source was Xenon Arc, the solar energy was expressed in accordance with AS / NZS 4399 Appendix B: 1996, and the sun protection index class according to AS / NZS 4399: 1996.

As a result, it was confirmed that the hair face sheet according to the example of the present invention showed a UV cut rate of 99.9%.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken as limiting the scope of the present invention. The present invention can be variously modified or modified. The scope of the invention should, therefore, be construed in light of the claims set forth to cover many of such variations.

100: first nano fiber layer
200: second nano fiber layer
300: base layer
310:

Claims (13)

A first nanofiber layer prepared by electrospinning a first polymer solution having hydrophobicity and having a lower surface treated with hydrophilic surface modification;
And a second nanofiber layer formed on the lower side of the first nanofiber layer and manufactured by electrospinning a second polymer solution having hydrophilicity,
Wherein the first nanofiber layer and the second nanofiber layer are thermocompression bonded,
The first nanofiber layer and the second nanofiber layer
An average fiber diameter of 50 nm to 1000 nm, an average pore size of 0.1 mu m to 1.0 mu m,
The thermocompression bonding
At a temperature of 50 캜 to 150 캜, at a pressure of 0.5 kgf / cm 2 to 9.0 kgf / cm 2,
The first polymer solution
A base polymer, a solvent, a water-repellent agent, a functional additive, and a sunscreen agent,
The second polymer solution
Base polymer, solvent, functional additive and ultraviolet screening agent,
Wherein the ultraviolet screening agent has a particle size of 50 nm to 300 nm
Functional Beauty Face Sheet.
A first nanofiber layer prepared by electrospinning a first polymer solution having hydrophobicity and having a lower surface treated with hydrophilic surface modification;
A second nanofiber layer formed on the lower side of the first nanofiber layer and manufactured by electrospinning a second polymer solution having hydrophilicity;
And a base layer formed on the first nanofiber layer,
Wherein the first nanofiber layer, the second nanofiber layer, and the base layer are thermocompression-bonded,
The first nanofiber layer and the second nanofiber layer
An average fiber diameter of 50 nm to 1000 nm, an average pore size of 0.1 mu m to 1.0 mu m,
The thermocompression bonding
At a temperature of 50 캜 to 150 캜, at a pressure of 0.5 kgf / cm 2 to 9.0 kgf / cm 2,
The first polymer solution
A base polymer, a solvent, a water-repellent agent, a functional additive, and a sunscreen agent,
The second polymer solution
Base polymer, solvent, functional additive and ultraviolet screening agent,
The particle size of the ultraviolet screening agent is 50 nm to 300 nm,
The base layer
A knitted fabric using a tricot method of a material selected from the group consisting of rayon, cellulose, nylon, polyester, and combinations thereof, or a combination of the knitted fabric and a nonwoven fabric
Functional Beauty Face Sheet.
delete 3. The method according to claim 1 or 2,
Wherein the hydrophilic surface modification treatment comprises a plasma treatment,
The plasma treatment
And is performed at an intensity of 5 to 50 kV for 5 to 30 minutes.
Functional Beauty Face Sheet.
delete delete 3. The method according to claim 1 or 2,
The base polymer
(PU), polyacrylonitrile (PAN), nylon, polyvinylidene fluoride (PVdF), polyhydroxybutyrate (PHB), polyether sulfone (PES), polyetherimide Is selected from the group consisting of lactone (PCL), polylactic acid (PLA), poly-L-lactic acid (PLLA)
Functional Beauty Face Sheet.
3. The method according to claim 1 or 2,
The functional additive
A skin irritant, an antimicrobial agent, a whitening agent, a skin tone modifier, a peptide, a flavonoid, an antioxidant, a detergent, a free radical scavenger, a moisturizer, an antiacne agent, an antioxidant, a softener, Is selected from the group consisting of
Functional Beauty Face Sheet.
3. The method according to claim 1 or 2,
The water-
Characterized in that it comprises at least one of the group consisting of silicon carbide, silicon oxycarbide, silica, silicon oxynitrocarbide, iron silicate, molybdenum carbosilide, and combinations thereof
Functional Beauty Face Sheet.
9. The method of claim 8,
The antimicrobial agent
A surfactant, a surfactant, a phenol compound, a manilide compound, a urea compound, a fluorine compound, a saccharide compound, an organometallic compound and an inorganic metal compound, or a combination thereof
Functional Beauty Face Sheet.
3. The method according to claim 1 or 2,
The UV-
Characterized in that it comprises at least one of P-aminobenzoic acid (PABA), Shea butter, Octylmethoxy cinnamate, Octyl salicylate, Benzophenon-2-12, Oxybenzone, Mexoryl-LX, Phenyl benzimidazole sulfonic acid, Avobenzone, Zinc Oxide and Titanium Dioxide doing
Functional Beauty Face Sheet. delete delete

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