KR102371114B1 - Mask pack and prepartion method thereof - Google Patents

Abstract

The present invention relates to a mask pack. The mask pack of the present invention is convenient to use because the contents do not stick to the hands during handling, is hygienic, and has excellent skin adhesion and feel. In addition, the mask pack is impregnated with a high-viscosity formulation such as a cream, and can be used as a high-moisturizing and highly nutritious pack.

Description

MASK PACK AND PREPARTTION METHOD THEREOF

The present invention relates to a mask pack having an excellent feeling of use.

A mask pack is a skin care product that is applied to the skin, left for a certain period of time, and then removed. Mask packs are classified into various types according to their formulation and usage method. Among them, a mask sheet is a product in which a cosmetic solution containing a moisturizing agent, a whitening agent, a wrinkle improving agent, and other functional cosmetic ingredients is impregnated into a base material on the sheet, and is used in a manner that is attached to the user's skin for a certain period of time and then removed. The mask sheet has established itself as one of the most common forms of mask packs due to its excellent portability and ease of use, and research and development to meet the diverse needs of consumers is also continuously being made.

Most of the mask sheets currently in circulation have a cosmetic composition impregnated on a substrate such as a nonwoven fabric, and are manufactured by folding the substrate into a packaging bag, then injecting the contents and sealing. Therefore, as the content to be injected, a lotion or cosmetic liquid having a low viscosity and excellent flowability so as to be easily impregnated into the substrate is used. On the other hand, high-viscosity formulations such as creams or gels have low fluidity and are difficult to impregnate the substrate in the same manner as described above, so there are restrictions on their use as contents.

In the conventional mask sheet manufactured in this way, a significant amount of content is buried not only in the substrate but also in the packaging bag. In addition, both surfaces of the mask sheet are not particularly separated, and both are in a state wetted with the contents. Such a mask sheet has a problem in that all of the injected contents are evaporated rather than supplied to the skin or remain in the packaging bag, resulting in a significant loss. There is a problem that the feeling of use decreases, such as dropping.

In order to solve the above problems, the Republic of Korea Utility Model Registration No. 20-0464720 is a mask that can be used while unfolding the packaging film by attaching a face sheet paper impregnated with a lotion to one side of the packaging film to be detachably attached to one body. pack was presented. Since the mask pack is used by holding the outer periphery of the unfolded packaging film by hand, it is possible to prevent the contents from sticking to the hand, and evaporation of the lotion can be prevented by the packaging film. However, the mask pack has a problem in that the flexibility of the face sheet paper is reduced due to the packaging film and thus the skin adhesion feeling is lowered, and the permeability of the sheet paper is lowered, indicating a stuffy feeling when attached to the skin. In addition, this method has a disadvantage in that the amount of impregnation of the contents is limited.

Therefore, there is a need to develop a new mask sheet that is hygienic and easy to handle because it does not smear on hands, has excellent skin adhesion, has a good feeling of use, and can use a high-viscosity formulation as a content.

Republic of Korea Registered Utility Model No. 20-0464720, expandable all-in-one packaging mask pack

The present inventors completed the present invention as a result of researching on a mask pack that is easy to use because the contents do not stick to the hands during handling, and can hold the contents of a high viscosity formulation.

Accordingly, it is an object of the present invention to provide a mask pack exhibiting an improved feeling of use.

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

In order to achieve the above object, the present invention is a mask pack comprising a mask sheet impregnated on only one side of the cosmetic composition,

The mask sheet,

a base layer impregnated with a cosmetic composition;

a barrier layer to block the outflow of the cosmetic composition impregnated in the base layer; and

Including;

the blocking supplementary layer is formed in one or more layers between the base layer and the blocking layer; One or more layers are formed between the base layer and the blocking layer and both on the outer surface of the blocking layer; Provided is a mask pack formed in two or more layers on the outer surface of the blocking layer.

The barrier supplementary layer may be formed of two or more layers, and one layer may be a water-repellent layer and one layer may be an oil-repellent layer.

The base layer may be non-woven fabric, woven fabric, paper, foam or sponge.

The material of the base layer may be at least one selected from the group consisting of viscose rayon, modal, lyocell, tencel, cupra, polyester, polypropylene, polyethylene terephthalate, nylon, cotton, hemp, pulp, and cellulose. .

The moisture content of the base layer may be 100 to 5000%.

The thickness of the base layer may be 20 μm to 2 mm.

The blocking layer may be made of nanofibers.

The barrier layer may further include at least one water-repellent polymer selected from the group consisting of water-repellent polyolefin, water-repellent polyurethane, water-repellent polyvinylidene fluoride, and Teflon-based resin applied to the nanofiber.

The water-repellent polymer may be included in an amount of 0.01 to 5% by weight of the total weight of the barrier layer.

The mass per unit area of the blocking layer may be 1 to 50 gsm.

Lamination of two or more of the respective layers constituting the mask sheet is made by at least one adhesive selected from the group consisting of an acrylic adhesive, a rubber adhesive, a polyurethane adhesive, a polyester adhesive, a silicone adhesive, and a hot-melt adhesive. can

The barrier supplementary layer may be a waterproof film or a coating layer formed by coating at least one material selected from the group consisting of fluorine-based, silicone-based, urethane-based, and Teflon-based resins.

_The barrier supplement layer is opaque to prevent _the contents inside _the mask sheet from being exposed to the outside _. (SiO ₂ ), manganese oxide (MnO), aluminum oxide (Al ₂ O ₃ ), cerium oxide (CeO ₃ ), mica, silica, mica, talc, and may include at least one inorganic material selected from the group consisting of kaolin there is.

The inorganic material may be included in an amount of 0.01 to 0.5% by weight based on the total weight of the barrier supplementary layer.

The mass per unit area of the barrier supplementary layer may be 0.1 to 20 gsm.

The viscosity of the cosmetic composition impregnated into the base layer may be 5,000 to 200,000 cps.

The mask sheet may further include a release film laminated on the outer surface of the base layer on which the cosmetic composition is supported.

Also, the present invention

S1) a base layer impregnated with a cosmetic composition;

a barrier layer to block the outflow of the cosmetic composition impregnated in the base layer; and

Including;

the blocking supplementary layer is formed in one or more layers between the base layer and the blocking layer; One or more layers are formed between the base layer and the blocking layer and both on the outer surface of the blocking layer; preparing a mask sheet formed of two or more layers on the outer surface of the blocking layer; and

S2) provides a method of manufacturing a mask pack, comprising the step of impregnating the cosmetic composition in the base layer.

In addition, in step S1), the blocking supplementary layer may be formed in one or more layers between the base layer and the blocking layer.

In addition, in step S1), the blocking supplementary layer may be formed in two or more layers on the outer surface of the blocking layer.

The method may further include laminating a release film on the base layer so that one surface of the release film coated with the cosmetic composition and one surface of the base layer face each other between steps S1) and S2).

The method may further include folding the mask sheet so that the cosmetic composition is not exposed to the outside after step S2).

The mask pack of the present invention is convenient to use because the contents do not stick to the hands during handling, is hygienic, and has excellent skin adhesion and feel. In addition, the mask pack is impregnated with a high-viscosity formulation such as a cream, and can be used as a high-moisturizing and highly nutritious pack.

1 is a cross-sectional view of a mask pack according to an embodiment of the present invention.
2 is a cross-sectional view of a mask pack according to another embodiment of the present invention.
3 is a cross-sectional view of a mask pack according to another embodiment of the present invention.

Hereinafter, a preferred embodiment of the present invention will be described in detail based on the accompanying drawings. These drawings may be implemented in various different forms as an embodiment for explaining the present invention, and are not limited to the present specification. In this case, in the drawings, parts irrelevant to the description are omitted in order to clearly explain the present invention, and similar reference numerals are used for similar parts throughout the specification. In addition, the sizes and relative sizes of components shown in the drawings are independent of actual scale, and may be reduced or exaggerated for clarity of description.

Mask Pack

The present invention is a mask pack comprising a mask sheet impregnated on only one side of the cosmetic composition,

The mask sheet may include a base layer impregnated with a cosmetic composition; a barrier layer to block the outflow of the cosmetic composition impregnated in the base layer; and a blocking supplementary layer supplementing the water repellency and oil repellency of the blocking layer, wherein the blocking supplementary layer is formed in one or more layers between the base layer and the blocking layer; One or more layers are formed between the base layer and the blocking layer and both on the outer surface of the blocking layer; Provided is a mask pack formed of two or more layers on the outer surface of the barrier layer.

The mask pack of the present invention is impregnated with a cosmetic composition on only one side of the mask sheet, and the mask sheet is protected with a release film or folded so that the cosmetic composition is not exposed to the outside . In addition, the mask sheet has excellent skin adhesion and a comfortable feeling even though it includes a blocking layer and a blocking supplementary layer. In addition, the mask pack of the present invention is impregnated with a high-viscosity formulation such as a cream, unlike a conventional mask pack, so that it can give a high moisturizing and nutritional effect.

1 shows a cross-section of a mask pack according to an embodiment of the present invention. As shown in FIG. 1 , the mask pack of the present invention includes a mask sheet 20 , wherein the mask sheet 20 includes a base layer 21 , a blocking supplementary layer 22 , and a blocking layer 23 . . In this case, the blocking supplementary layer 22 includes a first blocking supplementary layer 221 and a second blocking supplementary layer 222 . In addition, the cosmetic composition is impregnated into the base layer 21 and does not spill out of the blocking layer 23 .

In the present invention, as shown in FIG. 2, the mask sheet may further include a release film 10 laminated on the outer surface of the base layer 21, and by including the release film, the impregnated cosmetic composition does not smear on the user's hand. , may not evaporate out.

Here, the release film 10 is to protect the skin contact surface of the mask sheet 20 until it is attached to the skin, and to prevent contamination and evaporation of the cosmetic composition carried on the base layer 21, the release film 10 Silver is peeled off from the mask sheet when the user uses the mask pack, and the base layer 21 of the mask sheet 20 to which the release film 10 is in contact becomes a skin contact surface.

The material of the release film 10 is not particularly limited, and any material known to be used as a release film in the art may be used without limitation. In particular, a PET film, an embossing-treated PET film, or a PP film is preferable.

In the present invention, the mask sheet 20 is impregnated with a cosmetic composition and includes a base layer 21 used as a surface attached to the skin.

The base layer 21 has a plurality of pores to be impregnated with the cosmetic composition, and the form and material are not particularly limited as long as it has excellent liquid retention properties.

For example, the base layer 21 may be a nonwoven fabric, woven fabric, paper, foam, or sponge, and the material is viscose rayon, modal, lyocell, tencel, cupra, polyester, polyethylene (PE), polypropylene. (PP), polyethylene terephthalate (PET), polyvinyl alcohol (PVA), polyvinyl chloride (PVC), polyacrylonitrile (PAN), polyamide, polyurethane (PU), polylactic acid (PLA), nylon , cotton, hemp, pulp, and may be at least one selected from the group consisting of cellulose, but is not limited thereto. According to an embodiment of the present invention, the base layer may be a viscose rayon nonwoven fabric, a Tencel nonwoven fabric, a cupra nonwoven fabric or a cotton nonwoven fabric.

The mass per unit area of the base layer 21 is not particularly limited, but may be 10 to 150 gsm (g/m ² ). In addition, the moisture content of the base layer 21 may be in the range of 100 to 5000% of the weight of the base layer itself, but is not limited thereto.

The thickness of the base layer 21 is not particularly limited in the present invention and may be appropriately adjusted as necessary, but is preferably in the range of 20 μm to 2 mm. If the thickness of the base layer is less than 20 ㎛, the spreadability of the mask sheet is deteriorated and handling problems occur such as easy tearing. Therefore, it is appropriately adjusted within the above range.

The mask sheet 20 of the present invention includes a blocking layer 23 that blocks the outflow of the cosmetic composition impregnated in the above-described base layer. The blocking layer 23 blocks the cosmetic composition impregnated in the base layer 21 from leaking or evaporating to the outside of the base layer 21 and serves to prevent the contents from spilling onto the outer surface of the mask sheet 20 . At this time, the blocking layer 23 is preferably formed in the form of a thin film so as not to deteriorate the original flexibility of the base layer 21 .

In the present invention, the blocking layer 23 may be made of nanofibers. Here, the nanofiber means a fiber having a diameter of 1 to 500 nm of a single fiber by number average. Such nanofibers exhibit excellent adhesion when bonded to the base layer 21 , and can be manufactured as a thin film, and thus are suitable for use as a material of the blocking layer 23 .

The nanofiber is manufactured by an electrospinning method. The electrospinning method is a method of spinning a polymer solution or a polymer in a molten state in the form of fibers by applying a high voltage (eg, 10 to 60 kV) and discharging it from a nozzle. Since the electrospinning method uses a polymer solution or a polymer in a molten state as a raw material, almost all kinds of fiber materials can be used.

The material of the nanofiber is not particularly limited as long as it is an electrospinning material, and a synthetic polymer, a natural polymer, or a combination thereof may be used. Specifically, the material of the barrier layer is polyacrylonitrile (PAN), polyethylene oxide (PEO), polyethylene terephthalate (PET), polystyrene (PS), polyvinylidene fluoride (PVDF), polyurethane (PU), Polyvinylpropylene (PVP), polyvinyl alcohol (PVA), nylon, polyethersulfone (PES), polyetherimide (PEI), poly(styrene-butadiene-styrene) (SBS), and carboxymethylcellulose (CMC) At least one selected from the group consisting of may be used, and preferably, at least one selected from the group consisting of polyacrylonitrile, polyvinylidene fluoride, and polyurethane may be used.

In the present invention, the blocking layer 23 is preferably provided with water repellency and oil repellency to prevent the cosmetic composition from being transferred and to exhibit a blocking effect. That is, the barrier layer may be prepared including a water and oil repellent component, or may be coated with a water and oil repellent component on a substrate having no or weak water and oil repellency components.

According to an embodiment of the present invention, the blocking layer 23 may be a nanofiber sheet prepared including a water-repellent polymer applied to the nanofiber. At this time, non-limiting examples of the water-repellent polymer include at least one selected from the group consisting of water-repellent polyolefin, water-repellent polyurethane (eg, fluorine-containing polyurethane), water-repellent polyvinylidene fluoride, and Teflon-based resin. In this case, the water-repellent polymer may be included in an amount of 0.01 to 5% by weight, or 0.1 to 2% by weight of the total weight of the barrier layer.

The blocking layer 23 of the present invention is preferably implemented in the form of a thin film so as to function as a blocking layer without degrading the flexibility of the base layer 21 . Specifically, the blocking layer may be formed with a mass per unit area of 1 to 50 gsm, more preferably 1 to 20 gsm. If the mass per unit area of the barrier layer is less than 1 gsm, it is difficult to prevent penetration and evaporation of the cosmetic composition impregnated in the base layer. It may indicate a feeling of tedious use.

In one embodiment of the present invention, the lamination of two or more layers among the respective layers constituting the mask sheet may be made by adhesive, heat sealing, ultrasonic waves, or stitching.

Here, the lamination may be made by at least one adhesive selected from the group consisting of an acrylic adhesive, a rubber-based adhesive, a polyurethane adhesive, a polyester adhesive, a silicone adhesive, and a hot-melt adhesive. In this case, in order to prevent a decrease in air permeability of the mask sheet due to the adhesive, the adhesion may be performed by point fusion bonding.

Preferably, a hot-melt adhesive may be used as the adhesive. A hot-melt adhesive is an adhesive that does not use water or solvent at all, and adheres in a state in which a solid, nonvolatile, nonflammable, thermoplastic resin is melted by heat at room temperature. Since hot-melt adhesives do not contain solvents, they are environmentally friendly and have the advantage of less irritation to the skin.

The type of the hot-melt adhesive is not particularly limited, and adhesives commonly used in the art may be used without limitation. Specifically, the hot-melt adhesive uses a resin such as ethylene vinyl acetate copolymer (EVA), polyethylene (PE), polypropylene (PP), SIS, polyester, polyamide, polyurethane, etc. as a basic resin, In addition, wax (paraffin wax, polyethylene wax, etc.), tackifying resin (rosin-based resin, terpine resin, coumaron indene resin, petroleum resin, etc.), plasticizer (paraffin, aromatic oil, etc.), filler (calcium carbonate, clay etc.), antioxidants (phenols, aromatic amines, etc.) and the like may be further included.

The amount of the adhesive used in the present invention is not particularly limited and may be appropriately adjusted as necessary, but may be in the range of 0.1 to 10 gsm, for example. When this range is satisfied, it is possible to ensure proper adhesion, and it is preferable to avoid the problem of a decrease in the air permeability of the mask sheet due to excessive application of the adhesive.

The barrier supplementary layer 22 of the present invention is to supplement the water repellency and oil repellency of the barrier layer 23 or to prevent exposure of the contents inside the mask sheet to the outside, and, like the barrier layer, to prevent deterioration of the sheet flexibility. It is preferable that it is formed in a thin film, and it is preferable that the air permeability of the sheet is not impaired. For example, the blocking supplementary layer 22 may have a mass per unit area of 0.1 to 20 gsm.

The barrier supplement layer 22 may be a waterproof film or a coating layer coated with one or more materials selected from the group consisting of fluorine-based, silicone-based, urethane-based, and Teflon-based resins. Preferably, the barrier supplementary layer 22 is a urethane coating layer having hydrophobicity or hydrophilicity, and may impart water repellency and oil repellency.

The blocking supplementary layer 22 is formed of titanium oxide (TiO ₂ ), zinc oxide (ZnO), iron oxide (Fe ₂ O ₃ ), and zirconium oxide (ZrO ₂ ) to have opacity so that the contents inside the mask sheet are not exposed to the outside. ), silicon dioxide (SiO ₂ ), manganese oxide (MnO), aluminum oxide (Al ₂ O ₃ ), cerium oxide (CeO ₃ ), mica, silica, mica, talc, and at least one inorganic material selected from the group consisting of kaolin It may include, preferably titanium oxide or zinc oxide.

In this case, the inorganic material may be included in an amount of 0.01 to 0.5% by weight based on the total weight of the barrier supplementary layer 22, and when the inorganic material is included in an amount of less than 0.01% by weight, the water and oil repellent components may flow out, and 0.05 to 0.5% by weight. When included in more than weight %, the flexibility of the entire mask sheet may be reduced.

In addition, a pattern may be transferred or printed on the outer surface of the blocking supplementary layer 22 , that is, on the surface that is not bonded to the blocking layer, and by transferring or printing the pattern on the outer surface of the blocking supplementary layer 22 , the inside of the mask sheet It can give aesthetic feeling without exposing the contents of the product to the outside. In this case, the transfer or printing method is not particularly limited, and a method known in the art may be used.

Also, as shown in FIG. 1 , the mask sheet of the present invention may include two or more barrier complementary layers. By forming the barrier supplementary layer in two or more layers, it is possible to block the water-repellent or oil-repellent component included in the barrier layer from leaking or evaporating to the outside. Preferably, one layer includes a water repellent layer and one layer includes a barrier supplementary layer that is an oil repellent layer. It prevents leakage or evaporation, and the second blocking supplementary layer 222 may perform such that the water repellent component of the blocking layer 23 does not leak or evaporate to the outside.

the blocking supplementary layer is formed in one or more layers between the base layer and the blocking layer; One or more layers are formed between the base layer and the blocking layer and both on the outer surface of the blocking layer; Two or more layers may be formed on the outer surface of the blocking layer.

The barrier supplementary layer is formed as one or more layers between the base layer and the barrier layer, thereby primarily preventing the cosmetic composition impregnated in the base layer from penetrating the barrier layer and evaporating, and the water repellency or repellency contained in the barrier layer. It may serve to prevent the effective ingredient from being mixed with the cosmetic composition.

In addition, by forming one or more layers of the barrier supplementary layer between the base layer and the barrier layer and on both the outer surface of the barrier layer, the water repellent or oil repellent component contained in the barrier layer is prevented from mixing with the cosmetic composition, It can compensate for evaporation of the cosmetic composition to the outside.

In addition, since the barrier supplement layer is formed in two or more layers on the outer surface of the barrier layer, the water-repellent component of the barrier layer does not leak to the outside, the oil-repellent component of the barrier layer does not leak to the outside, and the aesthetic feeling including the pattern is reduced. can

In an embodiment of the present invention, the barrier supplementary layer may be selectively laminated on one surface and/or the other surface of any one layer selected from the base layer and the blocking layer. Preferably, the base layer, the first barrier complementary layer, the barrier layer, and the second barrier supplementary layer are laminated in the order, but the lamination order may vary depending on the cosmetic composition impregnated into the base layer or the components of the barrier layer. Preferably, it is laminated to supplement the water repellency or oil repellency of the barrier layer.

In addition, the two or more barrier complementary layers may or may not be continuously laminated. For example, as shown in FIG. 3 , the base layer 21 , the blocking layer 23 , the first blocking complementary layer 221 , and the second blocking complementary layer 222 may be stacked in this order. The complementary layer 221 and the second blocking supplementary layer 222 physically lengthen the path through which the cosmetic composition evaporates to the outside, thereby forming a double layer. Therefore, it is possible to significantly lower the amount of the cosmetic composition is evaporated to the outside.

The formulation of the cosmetic composition impregnated in the mask sheet 20 of the present invention is not particularly limited as long as it can be impregnated into the base layer 21, but it is preferable to use a high-viscosity formulation having a viscosity of 5,000 to 200,000 cps.

The cosmetic composition of the high viscosity formulation as described above not only has excellent moisture content compared to formulations with high flowability such as emulsion and lotion, but also can increase the content of oil and active ingredients, so it can supply nutrients to the skin at a high concentration. It has the advantage of maximizing the moisturizing effect and the regeneration effect. In addition, when a high-viscosity formulation is applied, the contents do not flow down from the mask sheet during distribution or use of the mask pack, so the convenience in use is also excellent.

In this case, the viscosity of the cosmetic composition may be measured by a viscosity measuring device. Specifically, 100 g of the sample was placed in a container and stored in a thermostat at 30 ° C. for at least 12 hours, and then the BROOKFIELD viscosity measuring instrument (BROOKFIELD RVDV-II+ pro viscometer) set to a spindle number of 64 and a spindle speed of 12 rpm. ), the viscosity of the cosmetic composition can be measured with the measured viscosity value by operating the device for 2 minutes.

The components of the cosmetic composition are not particularly limited in the present invention, and moisturizing ingredients such as fatty alcohol, wax, oil, and glycerin, wrinkle improvement, skin whitening, UV protection, anti-aging, moisture supply, skin having effects such as increased elasticity Active ingredients, natural extracts, and the like may be used.

For example, the skin active ingredients include retinol, retinyl palmitate, retinyl acetate, retinoic acid, coenzyme Q10, elastin, collagen, hyaluronic acid, ceramide, collagen, caffeine, chitosan, ascorbic acid, ascorbyl glucoside, alpha It may be at least one selected from the group consisting of bisabolol, tocopherol, tocopherol acetate, arbutin, niacinamide, adenosine, retinol acetate, vitamins A, D, E, and natural extracts.

The natural extracts include aloe, green tea, ginseng, red ginseng, pearl, wood vinegar, pine needles, ginkgo leaf, propolis, mulberry leaf, silkworm, snail mucus, kakadu plum, camu camu, yasai palm, squalane, caviar, broccoli, blueberry, Witch hazel, acerola, chlorella, mangosteen, guava, cornflower oil, carrot, caffeine, hamamelis, spirulina, salmon roe, Ecklonia cava, giant kelp, balm, machihyun, green onion, agaric agar, mulberry root, raspberry, raspberry, shiitake, It may be at least one selected from the group consisting of mosquito, edelweiss, chamomile, lavender, peppermint, eucalyptus, lemon balm, oregano, tea tree, gold, eosincho, sea buckthorn, and citron.

In addition, the cosmetic composition may further include preservatives, thickeners, fragrances, surfactants, etc. widely used in the art as additives.

As described above, the mask pack of the present invention includes the mask sheet 20 impregnated on only one side of the cosmetic composition, so that the contents do not smear on the hands while handling the mask pack, so it is easy to use. In addition, the mask pack of the present invention uses a high-viscosity cream-like formulation as an impregnated cosmetic composition, and exhibits high moisturizing and nutritional effects compared to a mask pack impregnated with a conventional low-viscosity formulation.

How to make a mask pack

The manufacturing method of the mask pack of the present invention is not particularly limited, but as an example

S1) a base layer impregnated with a cosmetic composition;

a barrier layer to block the outflow of the cosmetic composition impregnated in the base layer; and

Including;

the blocking supplementary layer is formed in one or more layers between the base layer and the blocking layer; One or more layers are formed between the base layer and the blocking layer and both on the outer surface of the blocking layer; preparing a mask sheet formed of two or more layers on the outer surface of the blocking layer; and

S2) may be prepared including the step of impregnating the cosmetic composition in the base layer.

When the above method is adopted, it is easy to impregnate the mask sheet with a high-viscosity formulation such as a cream. In addition, since the cosmetic composition does not smear on parts other than the base layer that is the skin-contacting surface, there is an advantage in that it is possible to manufacture a mask pack that is easy to handle.

Hereinafter, the manufacturing method according to an embodiment of the present invention will be described in detail step by step.

In step S1), a base layer impregnated with a cosmetic composition; a barrier layer to block the outflow of the cosmetic composition impregnated in the base layer; and a blocking supplementary layer supplementing the water repellency and oil repellency of the blocking layer, wherein the blocking supplementary layer is formed in one or more layers between the base layer and the blocking layer; One or more layers are formed between the base layer and the blocking layer and both on the outer surface of the blocking layer; A mask sheet formed of two or more layers on the outer surface of the blocking layer is prepared.

The material and shape of the base layer are as described above, and the base layer may use commercially available materials or may be directly manufactured and used.

The blocking layer may be made of nanofibers as described above, and in this case, the nanofiber blocking layer may be prepared by an electrospinning method.

In the electrospinning process, a polymer solution or a molten polymer may be used as described above. The polymer solution consists of a nanofiber raw polymer, a water-repellent polymer, and a solvent, and the solvent is not particularly limited as long as it can dissolve the raw polymer and the water-repellent polymer. In an embodiment of the present invention, a polymer solution prepared by dissolving methyl ethyl ketone as a solvent, 14.5 wt % of polyurethane and a trace amount of polyurethane containing fluorine as a water repellent was used as an electrospinning solution.

Conditions of the electrospinning process for forming the blocking layer may be based on a generally well-known method, and are not particularly limited. For example, the electrospinning may be performed under the conditions of a temperature of 20 to 25 °C, a humidity of 20 to 40%, and a voltage of 40,000 to 55,000 V.

In the present invention, the electrospinning method is not particularly limited, and any one of general electrospinning, air-electrospinning (AES), centrifugal electrospinning, and flash-electrospinning can be used

The blocking layer may be formed by bonding a pre-prepared nanofiber layer on the base layer or the blocking supplementary layer, or may be formed by directly electrospinning a polymer solution on one surface of the base layer or the blocking supplementary layer.

As described above, in the barrier supplementary layer, the water repellency and oil repellency of the barrier layer may be supplemented by the coating layer.

In step S1), the blocking supplementary layer may be formed in one or more layers between the base layer and the blocking layer, and the blocking supplementary layer may be formed in two or more layers on the outer surface of the blocking layer. In the case of preparing the mask sheet by stacking in this way, as described above, the path through which the cosmetic composition is physically evaporated to the outside becomes long, and a double film is formed.

In this case, the method of forming the coating layer on the barrier layer is not particularly limited, and for example, a method of laminating a waterproof film, a method of coating a water repellent agent with a predetermined thickness on the barrier layer by a conventional coating method, etc. can be used.

In the step S2), the base layer is impregnated with the cosmetic composition. The impregnation method may be a method used in the art, and even a high-viscosity cosmetic composition with poor flowability in the base layer is sufficiently impregnated into the base layer. If it is a method, it does not specifically limit.

In an embodiment of the present invention, the method may further include laminating a release film on the base layer so that one surface of the release film coated with the cosmetic composition and one surface of the base layer face each other between steps S1) and S2). . Further comprising the step of laminating a release film on the base layer can be evenly coated on the release film before impregnating the high-viscosity cosmetic composition in the base layer.

In this case, the coating method is not particularly limited in the present invention, and for example, comma coating, reverse coating, slot die coating, spray coating, doctor blade, etc. methods may be used.

In addition, the coating thickness of the cosmetic composition is not particularly limited, but preferably in the range of 100 to 5,000 μm, more preferably in the range of 200 to 1000 μm.

Next, in step S2), the cosmetic composition may be impregnated by placing the mask sheet prepared in step S1) on the cosmetic composition coated on the release film.

When such a method is used, even a high-viscosity cosmetic composition having poor flowability can be sufficiently impregnated into the base layer. In addition, it is preferable that the cosmetic composition can be selectively impregnated only on the skin-attached surface.

In an embodiment of the present invention, the method may further include folding the mask sheet so that the cosmetic composition is not exposed to the outside after step S2). This is a method to spread the mask sheet without the cosmetic composition on the skin. For example, it may be a structure folded in the shape of a half of the face by folding along the contours of the forehead and nose.

By further including the step of folding the mask sheet after the step S2), the cosmetic composition impregnated in the base layer does not evaporate to the outside, and the cosmetic composition does not stick to the hand because there is no cosmetic composition on the surface.

On the other hand, when using the cosmetic composition immediately after production having a temperature of 30 to 80 ℃ in step S2), there is an advantage that the cosmetic composition can be impregnated more smoothly.

The mask pack of the present invention is laminated in order of a base layer impregnated with a cosmetic composition and a barrier layer through the manufacturing method as described above, and has a structure including two or more barrier complementary layers. Therefore, when handling the mask pack, the base layer does not directly touch, so it is convenient and hygienic to use. In addition, by using the manufacturing method as in the present invention, a high-viscosity cream-like formulation can be supported in the mask pack, so that it is possible to manufacture a highly nutritious and highly moisturizing pack.

Hereinafter, preferred examples are presented to help the understanding of the present invention, but the following examples are merely illustrative of the present invention, and it will be apparent to those skilled in the art that various changes and modifications are possible within the scope and spirit of the present invention, It goes without saying that changes and modifications fall within the scope of the appended claims.

[Example]

Preparation Example 1: Preparation of a cosmetic composition

As a cosmetic composition to be impregnated into the base layer of the mask sheet, a cream having the composition shown in Table 1 below was prepared.

ingredient content (wt%) One stearic acid 2 2 glyceryl stearate 2 3 cetearyl alcohol 0.5 4 Hydrogenated Polydecene 8 5 Pentaerythrityl Tetraisostearate 3 6 Coco-Caprylate/Caprate 3 7 deionized water To 100 8 glycerin 5 9 arginine 0.65

<Production method>

1) Heat the raw materials from 1 to 6 to 75.

2) Put the raw materials from 7 to 9 in a separate manufacturing container and heat to 90.

3) Mix 1) while putting it into the manufacturing container of 2).

4) Rapidly cool to 30, and do not stir while cooling.

The viscosity of the prepared cream was measured by the following viscosity measuring device and measuring method, and as a result, the viscosity of the cream was 30,000 cps.

<Viscosity measurement method>

1) Viscometer: BROOKFIELD RVDV-II+ pro viscometer

2) Viscosity measurement sample preparation: Put 100 g of the sample to be measured in a container and store it in a 30 constant temperature bath for more than 12 hours.

3) Measuring device conditions: Spindle Number 64, Spindle Speed 12rpm, Measuring Time 2 minutes

4) The sample of 2) is loaded into the device of 1) set under the conditions of 3) above, and the viscosity is measured by operating the device for 2 minutes.

Example 1: Manufacture of mask pack

1 gsm of a hot-melt polyurethane adhesive (Henkel, Purmelt ^® ) was coated on a rayon-PET spunlace (60 gsm) nonwoven fabric containing viscose rayon and PET (weight ratio 8:2), and then electrospinning A mask sheet was prepared by forming a nanofiber blocking layer of 6 gsm by the process. At this time, the electrospinning solution contained 75 wt% of methyl ethyl ketone as a solvent, and a polymer solution prepared by dissolving 14.5 wt% of polyurethane and 3 wt% of fluorine-containing polyurethane as a water repellent was used, and electrospinning Conditions were a temperature of 20 to 25°C, a humidity of 20 to 40%, and a voltage of 40,000 to 55,000 V.

To supplement the water-repellent function, a hydrophobic polyurethane layer is laminated on the electrospinning sheet at 3 gsm, and a hydrophilic polyurethane layer containing 0.15% TiO ₂ and oil-repellent is laminated to prepare a non-woven hot melt cream supporting layer. A final lamination is performed with an adhesive to prepare a sheet.

Then, the cosmetic composition prepared in Preparation Example 1 was applied on the rayon-PET spunlace nonwoven fabric to prepare a mask pack.

Example 2: Preparation of Mask Pack

1 gsm of a hot-melt polyurethane adhesive (Henkel, Purmelt ^® ) was coated on a rayon-PET spunlace (60 gsm) nonwoven fabric containing viscose rayon and PET (weight ratio 8:2), and then electrospinning A mask sheet was prepared by forming a nanofiber blocking layer of 6 gsm by the process. At this time, the electrospinning solution contained 75 wt% of methyl ethyl ketone as a solvent, and a polymer solution prepared by dissolving 14.5 wt% of polyurethane and 3 wt% of fluorine-containing polyurethane as a water repellent was used, and electrospinning Conditions were a temperature of 20 to 25°C, a humidity of 20 to 40%, and a voltage of 40,000 to 55,000 V.

To supplement the water-repellent function, a hydrophobic polyurethane layer is laminated on the electrospinning sheet at 3 gsm, and a hydrophilic polyurethane layer containing 0.15% TiO ₂ and oil-repellent is laminated to prepare a non-woven hot melt cream supporting layer. A final lamination is performed with an adhesive to prepare a sheet.

Separately, the cosmetic composition prepared in Preparation Example 1 was applied on a release film (PET film having a thickness of 20 μm), and the cosmetic composition was evenly coated to a thickness of 700 μm using a comma coater (Ikeda, Japan).

A mask pack was prepared by placing the prepared mask sheet on the cosmetic composition coated on the release film, and impregnating the cosmetic composition in the nonwoven fabric by pressing at a constant pressure.

Example 3: Preparation of Mask Pack

1 gsm of a hot-melt polyurethane adhesive (Henkel, Purmelt ^® ) was coated on a rayon-PET spunlace (60 gsm) nonwoven fabric containing viscose rayon and PET (weight ratio 8:2), and then electrospinning A mask sheet was prepared by forming a nanofiber blocking layer of 6 gsm by the process. At this time, the electrospinning solution contained 75 wt% of methyl ethyl ketone as a solvent, and a polymer solution prepared by dissolving 14.5 wt% of polyurethane and 3 wt% of fluorine-containing polyurethane as a water repellent was used, and electrospinning Conditions were a temperature of 20 to 25°C, a humidity of 20 to 40%, and a voltage of 40,000 to 55,000 V.

To supplement the water-repellent function, a hydrophobic polyurethane layer is laminated on the electrospinning sheet at 3 gsm, and a hydrophilic polyurethane layer containing 0.15% TiO ₂ and oil-repellent is laminated to prepare a non-woven hot melt cream supporting layer. A final lamination is performed with an adhesive to prepare a sheet.

Then, after applying the cosmetic composition prepared in Preparation Example 1 on the rayon-PET spunlace nonwoven fabric, it was folded along the contours of the forehead and nose to prepare a mask pack folded in the shape of a half of the face.

The mask packs of Examples 1 to 3 prepared as described above were easy to handle and hygienic because the cosmetic composition impregnated in the base layer did not smear to the outside due to the barrier layer and the barrier supplement layer. In addition, a high-viscosity cream was used as the cosmetic composition, which showed high moisturizing power compared to the existing mask pack, and breathability was secured even with a blocking layer and a blocking supplementary layer, so that a stuffy feeling did not appear when attaching the skin, and the skin adhesion was also excellent. .

10: release film
20: mask sheet
21: base layer
22: blocking complementary layer
221: first blocking complementary layer
222: second blocking complementary layer
23: blocking layer

Claims (22)

As a mask pack comprising a mask sheet impregnated on only one side of the cosmetic composition,
The mask sheet,
a base layer impregnated with a cosmetic composition;
a barrier layer to block the outflow of the cosmetic composition impregnated in the base layer; and
Including;
the blocking supplementary layer is formed in one or more layers between the base layer and the blocking layer; One or more layers are formed between the base layer and the blocking layer and both on the outer surface of the blocking layer; It is formed in two or more layers on the outer surface of the blocking layer,
The blocking layer is a nanofiber sheet comprising a water-repellent polymer applied to the nanofiber,
The mass per unit area of the blocking layer is 1 to 20 gsm,
The barrier supplement layer is a titanium oxide (TiO ₂ ), zinc oxide (ZnO), iron oxide (Fe ₂ O ₃ ), zirconium oxide (ZrO ₂ ), dioxide that gives opacity so that the contents inside the mask sheet are not exposed to the outside. Silicon (SiO ₂ ), manganese oxide (MnO), aluminum oxide (Al ₂ O ₃ ), cerium oxide (CeO ₃ ), mica, silica, mica, talc, and at least one inorganic material selected from the group consisting of kaolin, and ,
The mask pack, wherein the mass per unit area of the barrier supplementary layer is 0.1 to 20 gsm. According to claim 1,
The barrier supplement layer is formed of two or more layers, and one layer is a water repellent layer and one layer is an oil repellent layer. According to claim 1,
The base layer is a non-woven fabric, woven fabric, paper, foam or sponge, the mask pack. According to claim 1,
The material of the base layer is at least one selected from the group consisting of viscose rayon, modal, lyocell, tencel, cupra, polyester, polypropylene, polyethylene terephthalate, nylon, cotton, hemp, pulp, and cellulose, a mask pack. According to claim 1,
The moisture content of the base layer is 100 to 5000%, the mask pack. According to claim 1,
The thickness of the base layer is 20 μm to 2 mm, the mask pack. delete According to claim 1,
The water-repellent polymer is selected from the group consisting of water-repellent polyolefin, water-repellent polyurethane, water-repellent polyvinylidene fluoride and Teflon-based resin, the mask pack. 9. The method of claim 8,
The water-repellent polymer is contained in 0.01 to 5% by weight of the total weight of the barrier layer, the mask pack. delete According to claim 1,
Lamination of two or more layers of each of the layers constituting the mask sheet is made by at least one adhesive selected from the group consisting of an acrylic adhesive, a rubber adhesive, a polyurethane adhesive, a polyester adhesive, a silicone adhesive, and a hot-melt adhesive. That is, the mask pack. According to claim 1,
The barrier supplement layer is a waterproof film, or a coating layer formed by coating at least one material selected from the group consisting of fluorine-based, silicone-based, urethane-based, and Teflon-based resins. delete According to claim 1,
The inorganic material is contained in an amount of 0.01 to 0.5% by weight based on the total weight of the blocking supplementary layer, the mask pack. delete According to claim 1,
The viscosity of the cosmetic composition impregnated in the base layer is 5,000 to 200,000 cps, the mask pack. According to claim 1,
The mask sheet further comprises a release film laminated on the outer surface of the base layer on which the cosmetic composition is supported, the mask pack. S1) a base layer impregnated with a cosmetic composition;
a barrier layer to block the outflow of the cosmetic composition impregnated in the base layer; and
Including;
the blocking supplementary layer is formed in one or more layers between the base layer and the blocking layer; One or more layers are formed between the base layer and the blocking layer and both on the outer surface of the blocking layer; It is formed in two or more layers on the outer surface of the blocking layer,
The blocking layer is a nanofiber sheet comprising a water-repellent polymer applied to the nanofiber,
The mass per unit area of the blocking layer is 1 to 20 gsm,
The barrier supplement layer is titanium oxide (TiO ₂ ), zinc oxide (ZnO), iron oxide (Fe ₂ O ₃ ), zirconium oxide (ZrO ₂ ), silicon dioxide that gives opacity so that the contents inside the mask sheet are not exposed to the outside. (SiO ₂ ), manganese oxide (MnO), aluminum oxide (Al ₂ O ₃ ), cerium oxide (CeO ₃ ), mica, silica, mica, talc, and at least one inorganic material selected from the group consisting of kaolin,
preparing a mask sheet having a mass per unit area of the barrier supplementary layer of 0.1 to 20 gsm; and
S2) A method of manufacturing a mask pack comprising the step of impregnating the base layer with a cosmetic composition. 19. The method of claim 18,
In the step S1), the blocking supplementary layer is formed as one or more layers between the base layer and the blocking layer. 19. The method of claim 18,
In the step S1), the blocking supplementary layer is formed in two or more layers on the outer surface of the blocking layer. 19. The method of claim 18,
The method of manufacturing a mask pack, further comprising laminating a release film on the base layer so that one surface of the release film coated with the cosmetic composition and one surface of the base layer face each other between steps S1) and S2). 19. The method of claim 18,
The method of manufacturing a mask pack, further comprising folding the mask sheet so that the cosmetic composition is not exposed to the outside after step S2).

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