KR101773451B1 - Cosmetic sheet including separable release layer and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a skin-adhesive sun-blocking sheet for skin care including a center-separable release layer, and a production method thereof. According to the present invention, the skin-adhesive sun-blocking sheet for skin care including the center-separable release layer comprises: the release layer having a tearing part formed at the center or one spot so as to be separated laterally; and a nanofibrous layer formed on one side of the release layer. The release layer and the nanofibrous layer are bonded together by heat compression.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an ultraviolet-blocking skin-adhesion cosmetic sheet comprising a central detachable release layer,

More particularly, the present invention relates to a UV-blocking skin-friendly cosmetic sheet comprising a center separable release layer, and more particularly, to a release layer having a center separation and a cut-out structure and being easy to be detached, The present invention relates to an ultraviolet barrier skin adhesion cosmetic sheet comprising a center separable release layer which can be formed into a thin film by thermocompression bonding of a nanofiber layer and a method for manufacturing the same.

Conventional mask packs contain essences containing functional ingredients such as natural extracts, proteins, and vitamins on a nonwoven fabric so as to have functions such as whitening, wrinkle reduction, moisture supply, skin troubles, skin elasticity, Has come.

In general, the substrate used for the mask sheet is a nonwoven fabric, a paper sheet, a gel, and the like. The nonwoven fabric is a material most commonly used for economic reasons because the fibers are bonded or mechanically tangled.

However, when the mask pack using only the nonwoven fabric is formed to be thin, the strength is lowered and it is difficult to handle, and the retention of the cosmetic preparation is lowered. Therefore, the mask pack has to be formed to have a predetermined thickness or more and its thickness is thick, There was a limit.

In addition, there is a problem that the moisture of the cosmetic preparation easily evaporates after adhering to the surface of the skin, thereby deteriorating the continuous effect.

On the other hand, nanofibers are microfibers having diameters of tens to hundreds of nanometers. Fabric sheets and sheets made of nanofibers have high specific surface area and can improve adsorption and retention.

In this connection, Japanese Patent Application Laid-Open No. 2007-70347 discloses a nonwoven fabric laminate for skin adhesion in which nano fibers and nonwoven fabric are closely contacted by electrostatic attraction, but they are in close contact with each other due to electrostatic attraction So that there is a problem that delamination occurs easily when impregnated.

Some manufacturers have attempted to prevent delamination by forming an adhesive layer between the nonwoven fabric and the nanofibers by using an adhesive. However, since the adhesive layer is formed, there is a limit in forming a thin film, and the flexibility of the mask sheet is deteriorated due to the adhesive, , There is a problem that the adhesion to the skin is lowered.

However, since the conventional mask pack is manufactured on the basis of a nonwoven fabric, sufficient adhesion is not achieved at the interface with the skin, and the effective ingredient can not be sufficiently transferred to the deep part of the skin. Adhesion has been improved.

Therefore, conventionally, when the mask pack is attached and actuated, the use of the beauty sheet itself due to its own weight and the flowing out of the excess essence cause inconvenient use, unpleasant feeling, and wasted essence. In addition, due to the low adhesion of the beauty sheet, the wearer is restrained by daily activities during wearing, and may be laid down during the wearing time.

In order to overcome these limitations, hydrogel beauty sheets have recently been widely used.

A conventional mask pack is a mask pack made of a hydrogel applied to a paper, in which a nonwoven fabric is applied on a hydrogel, the essence is applied to the nonwoven fabric, and the nonwoven fabric is separated from the nonwoven fabric to use the paper, hydrogel and essence as a pack .

However, the hydrogel mask pack sheet is heavy due to its large weight, and its thickness is also large, so that the voids of the hydrogel itself are low when the mask pack is used, thereby causing the stuffiness.

In addition, a release film for protecting the hydrogel and the essence is detachably attached to the conventional mask pack, and the release film is detached from the beauty sheet during use, and then the hydrogel is attached to the face.

However, when separating the protective film from the hydrogel or the nonwoven fabric, the conventional beauty sheet is separated from the protective film before separation, or the protective film is difficult to separate due to adhesion, The film may be deformed or torn during the separation process with the film.

On the other hand, the conventional mask pack sheet exerts its function with the mask pack sheet itself. Because of the cosmetic formulation used in the mask pack sheet, the function as a beauty sheet is exerted.

Accordingly, many cosmetic formulations and mask pack sheets are mixed together. In order to impart functionality to the mask pack sheet itself, the cosmetic preparation and mask pack sheet have been coated or applied in such a manner that this method also blocks the pores of the mask pack sheet and significantly reduces uniformity It is difficult to expect the effect of the functional material because the content of the functional material is not constant.

In order to solve the above problems, the object of the present invention is to maximize the surface area due to the nano-sized fibers and to provide an excellent adhesion with the skin surface, The present invention provides a mask pack sheet that increases the essence absorbing power and relieves the heavy pressure and the stiffness of covering the vinyl.

Another object of the present invention is to provide a center-cut release layer, which protects the mask pack sheet and facilitates the detachability due to the central incision type.

Still another object of the present invention is to provide a mask pack sheet in which a functional additive is contained in the production of a nanofiber layer, thereby exhibiting a uniform functional effect and functionality without using a cosmetic preparation.

In order to solve the above-mentioned problems, the ultraviolet shielding skin adhesive beauty sheet according to the present invention comprises a release layer formed at the center or at one side of the ultraviolet shielding skin-friendly beauty sheet. And a nano fiber layer formed on one side of the release layer, wherein the release layer and the nano fiber layer are thermocompression bonded.

And the release layer and the nanofiber layer are thermocompression bonded at a temperature of 50 to 150 ° C and a pressure of 0.5 kgf / cm 2 to 9.0 kgf / cm 2.

Wherein the release layer is any one selected from the group consisting of polyester, nylon, polypropylene, and combinations thereof.

The nanofiber layer is fabricated by electrospinning a polymer solution obtained by mixing a polymer and a solvent to have a basis weight of 0.3 g / m 2 to 30 g / m 2 and a fiber diameter of 30 nm to 3000 nm.

The polymer may be selected from the group consisting of polyurethane (PU), polyacrylonitrile (PAN), polyvinyl alcohol (PVA), nylon, polyvinylidene fluoride (PVdF), polyhydroxybutyrate (PHB), polyethersulfone , Polyetherimide (PEI), polycaprolactone (PCL), polylactic acid (PLA), poly-L-lactic acid (PLLA), and combinations thereof.

The polymer solution may be used in combination with an active ingredient such as an ultraviolet screening agent, a whitening agent, a skin tone modifier, a peptide, a flavonoid, an antioxidant, a detergent, a free radical scavenger, a moisturizing agent, an antiacne agent, an antioxidant, An antioxidant, a nutrient, a sebum absorbent, a water absorbent, and a combination thereof.

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, And the like.

In order to solve the above-mentioned problems, the present invention provides a method for manufacturing an ultraviolet cut skin adhesion cosmetic sheet comprising a center separable release layer, comprising the steps of: forming a release layer (S100 )and; A step (S200) of manufacturing a nanofiber layer to produce a nanofiber layer formed on one surface of the release layer; And a bonding step (S300) of thermocompression bonding the prepared releasing layer and the nano fiber layer.

The nanofiber layer preparation step (S200) comprises a polymer solution preparation step (S210) of preparing a polymer solution by mixing a polymer and a solvent; And an electrospinning step (S220) of electrospinning the polymer solution so that the polymer solution has a basis weight of 0.3 g / m 2 to 30 g / m 2 and a fiber diameter of 30 nm to 3000 nm.

The polymer solution preparation step (S210) may include a step of preparing a polymer solution (S210), which may include a sunscreen 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, (S211) of mixing a functional additive to be mixed with at least one functional additive selected from the group consisting of a drug, an antifungal agent, a nutrient, a sebum absorbent, a water absorbent, and a combination thereof.

The joining step (S300) is characterized in that the produced release layer and the nano fiber layer are thermocompression bonded at a temperature of 50 to 150 DEG C and a pressure of 0.5 to 0.6 kgf / cm < 2 >.

As described above, according to the present invention, the release layer can be easily detached when the beauty sheet is worn, and the release layer can be bonded to the release layer by thermal compression, The same harmful components are not used and the stability can be secured.

In addition, according to the ultraviolet blocking skin-friendly beauty sheet including the separable release layer according to the present invention and the method for producing the same, the nanofiber layer is thin and thinner than other beauty sheets such as nonwoven fabric and hydrogel, The nano size of the fiber has a larger surface area, which is superior to the absorbency of the essence. It has the same structure as the surface of the skin, and has a porosity of 85-90%.

In addition, according to the ultraviolet barrier skin adhesion cosmetic sheet comprising the medically separable release layer according to the present invention and the method for manufacturing the same, Since the nanofiber itself contains a cosmetic and functional agent instead of impregnating and absorbing the cosmetic preparation separately on the substrate, it has an ultraviolet shielding function and various functions to maximize the functionality when used in cosmetic formulations.

1 is a sectional view showing a layer structure of a beauty sheet according to the present invention;
2 is a schematic view showing a cut-out portion according to an embodiment of the present invention.
3 is a conceptual view showing a manner in which a beauty sheet is separated according to the present invention.
4 is a SEM photograph of (A) an extracellular matrix and (B) a nanofiber of a cosmetic sheet according to the present invention.
5 is a SEM photograph showing the diameters of (A) the nonwoven fabric of the conventional invention and (B) the beauty sheet of the present invention.
6 is a UV blocking ratio report of a beauty sheet according to the present invention.
7 is a flow chart showing a method of manufacturing a beauty sheet according to the present invention;
8 is a flow chart showing the steps of producing a release layer according to the present invention.

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.

FIG. 1 is a cross-sectional view showing a layer structure of an ultraviolet barrier skin adhesion cosmetic sheet including a medically separable release layer according to the present invention.

The UV blocking skin-friendly beauty sheet (abbreviated below as a cosmetic sheet) comprising the median separation type release layer according to the present invention is characterized in that a cut-out portion 110 is formed at the center or at one or more places, And a nano fiber layer 200 formed on one side of the release layer, wherein the release layer and the nano fiber layer are thermocompression-bonded.

The beauty sheet according to the present invention may have a facial shape, an integral shape of the face, a shape in which the facial correlation and the lower tube are separated from each other, and the shape of the face such as nose, cheek, eye and forehead may be partially shaped.

2 is a schematic view showing an embodiment of a cut-out portion formed in a release layer according to the present invention.

The release layer (100) is characterized in that the cut portion (110) exists at the center or at one or more places and is separated from the left and right.

The release layer 100 is formed on one surface of a nano fiber layer 200 to be described later and functions as a protective film used for maintenance and convenience of a beauty sheet. It is used to maintain the shape and increase convenience of users.

In the case of the conventional protective film, the mask pack sheet is separated from the protective film before being separated from the mask pack sheet by hand during separation from the hydrogel or the nonwoven fabric, or is separated from the protective film by moisture and viscosity of the cosmetic preparation It is difficult to separate the protective film from the protective film due to adhesiveness, so that the shape may be changed or torn during the separation process with the protective film.

However, in the beauty sheet of the present invention, the release layer 100 is bonded to the nanofiber layer 200 only by thermocompression bonding without an adhesive, thereby protecting the nanofiber layer, which is difficult to handle with ease, from external impact, It keeps shape.

Accordingly, the release layer 100 serves as a support for supporting the nanofiber layer 200 to enhance user's convenience, and also provides protection against harmfulness and external impact.

Since the release layer 100 of the present invention is separated by the cut portion 110 formed at the center or at one or more places, the adhesive force It is easy to separate the nano fiber layer 200 from the nano fiber layer 200 that contacts the skin even if the edge sections are the same.

FIG. 3 shows the manner in which the ultraviolet barrier skin adhesive beauty sheet comprising the medically separable release layer according to the present invention is separated.

After the nano fiber layer 200 of the beauty sheet according to the present invention is attached to the user's face, the release layer 100 is slowly separated and removed.

Unlike the conventional protective film, the release layer 100 is bonded to the nanofiber layer 200 by thermocompression bonding so that the nanofiber layer 200 is fixed to the nanofiber layer 200 until the user separates the nanofiber layer 200 from the central cut- The nanofiber layer 200 can be used as a support for supporting the nanofiber layer 200.

More specifically, the release layer 100 is characterized in that it is selected from the group consisting of polyester, nylon, polypropylene, and combinations thereof.

The method of forming the release layer 100 is not limited as long as it is a method of increasing the durability of the mask pack sheet and imparting stretchability, but a specific example thereof may be weaving or knitting.

Weaving is classified as plain weave, twill weave, and water weave according to the number of intersections of warp (warp) and weft (weft) at right angles.

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, the tricot method can be used. Tricot is a kind of warp knitting yarn, which is knitted using a warp knitting machine consisting of three guide bars for guiding yarn, and it is possible to form a delicate and dense structure, It is possible to provide a stable bonding at the time of bonding with the nanofiber layer 200, and at the same time, the skin adhesion force can be increased.

It is preferable that the release layer 100 has a basis weight of 7.0 to 70 g / m 2 and a thickness of 8.0 to 500 탆. If the basis weight and the thickness are less than the above-mentioned basis weight and wrinkle, tear strength or wrinkle tend to occur, , It is preferable that the above range is not exceeded because the weight is high and the adhesiveness is poor when it is adhered to the skin.

The nanofiber layer 200 is fabricated by electrospinning a polymer solution obtained by mixing a polymer and a solvent.

The polymer may be at least one selected from the group consisting of polyurethane (PU), polyacrylonitrile (PAN), polyvinyl alcohol (PVA), nylon, polyvinylidene fluoride (PVdF), polyhydroxybutyrate (PHB), polyethersulfone (PES), polyetherimide (PEI), polycaprolactone (PCL), polylactic acid (PLA), poly-L-lactic acid (PLLA), and combinations thereof. Do not.

The solvent for preparing the polymer solution may be selected from the group consisting of dichloromethane, dimethylformamide, dimethylsulfoxide, dimethylacetamide, methylethylketone, chloroform, acetone, water, formic acid, acetic acid, butyl acetate, cyclohexane, THF, , But the present invention is not limited thereto.

In this case, the weight percentage of the solvent to be added may vary depending on the kind of the polymer and the mixing characteristics. However, it is preferable that the weight percentage of the solvent is 0.1 to 30% by weight based on the total polymer solution will be.

In addition, in forming the nanofiber layer 200 using the electrospinning method, an additive such as a conductivity enhancer may be added to the polymer solution to improve the electrospinning property.

The nanofiber layer 200 can impart hydrophilicity or water repellency depending on the kind of polymer and polymer solution used.

In the case of a beauty sheet having hydrophilicity, the moisture absorbency of the functional additive and the cosmetic preparation is enhanced, skin adhesion is maximized and the skin conveying power is enhanced, while in the case of the beauty sheet having water repellency, the volatile property of the functional additive and the cosmetic preparation is suppressed The high porosity of the nano fiber layer 200 has an effect of transmitting air to the skin.

4 compares (A) the extracellular matrix and (B) the nanofibers of the cosmetic sheet of the present invention.

The nanofibers constituting the nanofiber layer 200 are composed of a structure very similar to an extracellular matrix.

Since the nanofiber layer 200 is formed by electrospinning and is formed by randomly stacking in the nature of electrospinning, the nanofiber layer 200 has similar properties due to the structure similar to the extracellular matrix, And has an advantage of being able to eliminate the wrinkles caused by the movement of the skin in addition to the thin film properties.

5 is a comparison between (A) the nonwoven fabric of the prior art (about 7,000 to 10,000 nm) and (B) the diameter of the beauty sheet according to an embodiment of the present invention (about 125 nm).

The diameter of the nanofibers constituting the nanofiber layer 200 is preferably in the range of 30 to 3000 nm. If the fiber diameter is less than 30 nm, it is difficult to ensure sufficient physical properties. The impregnation amount of the cosmetic preparation becomes small, and the specific surface area is small, so that the adhesion to the skin can be lowered.

The nano fiber layer 200 is about one-sixth to one-eighth the thickness of a conventional non-woven fabric, and the thickness of the hair is only about one-eighth when the thickness of the hair is about 100,000 nm.

Since the surface area is in inverse proportion to the thickness of the fibers and the surface area of the nanofiber layer 200 is large, the cosmetic preparation has excellent hygroscopicity and excellent skin adhesion.

In order to meet the diameter and required surface area of the present invention, the polymer solution is preferably electrospun to have a basis weight of 0.3 to 30 g / m 2 (gram per square meter).

More specifically, when the basis weight is less than 0.3 g / m 2, the surface area for absorbing and retaining the cosmetic preparation is so small that the impregnability is poor and the treatment is difficult with an excessively thin film. When the basis weight exceeds 30 g / It is preferable that the impregnation property of the preparation becomes large and it may cause weight, so that it does not deviate from the above range.

In addition, the polymer solution may further include a functional additive to impart functionality of the nanofiber itself.

The functional additive may be at least one selected from the group consisting of an ultraviolet screening agent, a whitening agent, a skin tone modifier, a peptide, a flavonoid, an antioxidant, a detergent, a free radical scavenger, a moisturizing agent, an anti acne agent, An antifungal agent, a nutrient, a sebum absorbent, a water absorbent, and a combination thereof, but is not limited thereto.

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 and Titanium Dioxide And may be added by adjusting the content according to the Food and Drug Administration (FDA) and the FDA-restricted amount.

FIG. 6 is a UV cut chart of a beauty sheet according to the present invention. The beauty sheet according to the present invention showed a UV cut rate of 99% or more.

After the facial cleansing, the nano fiber layer containing the functional material without using an expensive cosmetic preparation or chemical product comes into contact with the skin, so that the effect of the functional material can be expected by the osmotic pressure theory. In the hot summer, The sweat and the sebum are absorbed by the nano fiber layer and the heat is escaped out due to the high porosity and the ultraviolet ray shielding effect can be expected.

As described above, in the case of the nanofiber layer 200, since the fibers have a large surface area due to the nano size and are laminated by the electrospinning method, the porosity is uniformly from 85 to 95%. Therefore, Is added so that the functional material does not aggregate in one place during the electrospinning and does not block the pores of the skin.

The nanofiber layer 200 according to the present invention can exhibit functionality by adding a functional material to the nanofiber layer without additives or cosmetic formulations containing a functional material.

On the other hand, the beauty sheet according to the present invention can have the functionality of the nanofiber itself, and after the preparation of the beauty sheet, the cosmetic preparation can be further impregnated or coated to maximize the functionality.

Hereinafter, a method for manufacturing a hairdressing sheet according to the present invention will be described, and a detailed description thereof will not be repeated.

Fig. 7 is a flowchart showing a method for manufacturing an ultraviolet-blocking skin-adhesion beauty sheet (hereinafter abbreviated as a method for manufacturing a beauty sheet) comprising a medically separable release layer according to the present invention.

A method of manufacturing a beauty sheet according to the present invention includes a release layer preparation step (S100) for forming a release layer which is cut off at the center or at one or more places so as to be separable laterally and a nano fiber layer formed on one surface of the release layer And a joining step (S300) of joining the produced release layer and the nanofiber layer by thermocompression bonding.

FIG. 8 is a flowchart showing a release layer manufacturing step (S100) according to the present invention.

The release layer manufacturing step S100 according to the present invention includes a release paper preparation step S110, a surface treatment step S120, and an incision step S130. In addition, it may further include a piercing step (not shown) which is performed in a face shape.

The step of preparing the release paper (S110) comprises preparing and manufacturing the release paper, preparing and manufacturing fibers selected from the group consisting of polyester, nylon, polypropylene, and a combination thereof by using the weaving, knitting or the like And a description thereof will be omitted.

The surface treatment step S120 is a pre-treatment step of the cutting process. The surface treatment is performed on the release paper to prevent the release paper from being chewed by the cutting blade in the cutting step S130 or wrinkling during the rolling operation.

As a method for performing the surface treatment step (S120), a surface treatment including a singeing method, a Sikette method, a fusing method, a calender method and an embossing method and a combination thereof Method can be performed.

Among them, the calendering method is a physical method of applying pressure under temperature and humidity, and the temperature and humidity can be changed according to the calibrating agent.

The cutting step S130 is a step of cutting the release paper so as to have a cut portion at the center or at one or more positions of the release paper and the surface-treated release paper.

The cut-out portion may be formed along the center line of the release paper, that is, the center line of the face shape, but not limited thereto, and may be formed at one or more places.

Specifically, the cut-out portion 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 portion is formed to be less than 2 cm from the edge of the release layer, it is preferable that the cut portion is formed at a distance of 2 cm or more since the edge portion is close to the end face and a sufficient usable space can not be secured.

The length of the dashed line or dotted line (cut portion) is 0.5 to 8 mm, and the length ratio of the broken line or dotted line (cut portion) to the blank portion (uncut portion) is Can be formed at a ratio of 1: 1 to 3, and it is possible to prevent the nano fiber layer 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 easy.

It is preferable that the distance between one cut portion and another cut portion is 240 mm to 650 mm. Since the width of a common face of a person is 240 mm or more, when the cut portion interval is less than 240 mm, If it is more than 650 mm, it is preferable to make the gap at the above interval because the loss of the non-manufactured parts is large.

The punching step (not shown) is a step of putting the release paper on which the cut-out portion is formed in a face shape. As used herein, the term " face type " refers to a shape of a mask pack or a sheet attached to a face of a user. Specific examples include an integrated type in which the entire face is shaped, a face type, And a shape of a part of a face such as a forehead, but is not limited thereto.

The step (S200) of fabricating the nanofiber layer includes a polymer solution preparation step (S210) of preparing a polymer solution by mixing a polymer and a solvent, and electrospinning so that the polymer solution has a basis weight of 0.3 g / m 2 to 30 g / m 2 and a fiber diameter of 30 nm to 3,000 nm And electrospinning step S220.

The polymer solution preparation step (S210) is a step of preparing a polymer solution by mixing a polymer and a solvent. The types and contents of the polymer and the solvent have been described above, and a description thereof will be omitted.

In addition, the polymer solution preparation step (S210) may further include a functional additive mixing step (S211) and a step of adding a conductivity enhancing agent for improving electrospinning. The types of the functional additives are described in detail Omit it.

The electrospinning step S220 is an electrospinning step of electrospinning the prepared polymer solution so as to have a basis weight of 0.3 g / m 2 to 30 g / m 2 and a fiber diameter of 30 nm to 3000 nm.

If the basis weight is less than 0.3 g / m 2, the surface area for absorbing and retaining the cosmetic preparation is small, and the impregnation property is decreased. Also, the treatment is difficult with an excessively thin film. If the basis weight exceeds 30 g / It is preferable not to deviate from the above range because it is likely to cause a weight increase.

In the bonding step S300, the nanofiber layer is formed on one surface of the release layer, which is formed by the release layer manufacturing step (S100) and the nanofiber layer manufacturing step (S200), through a thermocompressor Is a step of thermocompression bonding.

The joining step (S300) joins the prepared release layer and the nano fiber layer at a temperature of 50 to 150 DEG C under a pressure of 0.5 kgf / cm2 to 9.0 kgf / cm2. When thermocompression bonding is performed under the above temperature and pressure range, The releasing layer and the nano fiber layer are unbonded and nonuniformly bonded to each other, so that the impregnation or use of the cosmetic preparation can cause a de-lamination. When the thermosensitive layer is thermocompression-bonded over the temperature and pressure range, It is preferable not to deviate from the above range because it may be difficult or carbonization and defects may occur.

As a result, the beauty sheet according to the present invention can thermally press-bond the release layer and the nanofiber layer to form a thin film of the beauty sheet, thereby enhancing adhesion to the skin.

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:
110:
200: Nano fiber layer

Claims (11)

1. A UV-blocking skin-adhesion cosmetic sheet comprising a central detachable release layer,
A releasable layer formed at the center or at any one place with a cut-out portion and separable laterally;
And a nano fiber layer formed on one surface of the release layer and having a porosity of 85 to 95%
Wherein the release layer and the nano fiber layer are thermocompression bonded,
The release layer
A squeeze process, a fusing process, a calender process and an embossing process, which have a basis weight of 7.0 to 70 g / m 2 and a thickness of 8.0 to 500 탆 and are formed by a tricot method, ) Method, and a combination of these methods,
The length ratio of the broken line or dotted line (cut portion) to the uncut portion of the cutout portion is formed in a ratio of 1: 1 to 3,
The nanofiber layer
A polymer solution prepared by mixing a polymer, a solvent and an ultraviolet screening agent to prepare a polymer solution having a basis weight of 0.3 g / m 2 to 30 g / m 2 and a fiber diameter of 30 nm to 3000 nm,
The UV-
Wherein the compound is any one 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 and combinations thereof
An ultraviolet blocking skin adhesion cosmetic sheet comprising a central detachable release layer.
The method according to claim 1,
The release layer and the nanofiber layer
And a thermocompression bonding at a temperature of 50 to 150 DEG C and a pressure of 0.5 kgf / cm2 to 9.0 kgf / cm2.
An ultraviolet blocking skin adhesion cosmetic sheet comprising a central detachable release layer.
The method according to claim 1,
The release layer
Polyester, nylon, polypropylene, and a combination thereof.
An ultraviolet blocking skin adhesion cosmetic sheet comprising a central detachable release layer.
delete The method according to claim 1,
The polymer
(PU), polyacrylonitrile (PAN), polyvinyl alcohol (PVA), nylon, polyvinylidene fluoride (PVdF), polyhydroxybutyrate (PHB), polyether sulfone (PEI), polycaprolactone (PCL), polylactic acid (PLA), poly-L-lactic acid (PLLA), and combinations thereof.
An ultraviolet blocking skin adhesion cosmetic sheet comprising a central detachable release layer.
The method according to claim 1,
The polymer solution
A skin irritant, an anti-inflammatory agent, an antimicrobial agent, a drug, an antifungal agent, a nutrient, a sebum absorbent, a water absorbent, an antioxidant, an antioxidant, an antioxidant, an antioxidant, And a functional additive selected from the group consisting of combinations thereof.
An ultraviolet blocking skin adhesion cosmetic sheet comprising a central detachable release layer.
delete A method for manufacturing an ultraviolet barrier skin adhesion cosmetic sheet comprising a center separable release layer,
A release layer production step of forming a release layer which is cut off from the center or at any one place so as to be separable laterally;
A nanofiber layer forming step of forming a nanofiber layer formed on one surface of the release layer and having a porosity of 85 to 95%;
And a bonding step of thermocompression bonding the prepared release layer and the nano fiber layer,
The mold release layer manufacturing step
Preparing a release paper having a basis weight of 7.0 to 70 g / m < 2 > and a thickness of 8.0 to 500 mu m by using a tricot method, the fibers being selected from the group consisting of polyester, nylon, polypropylene and combinations thereof;
The release paper may be subjected to a surface treatment by any one surface treatment method comprising a singeing method, a Sikette method, a fusing method, a calender method, an embossing method and a combination thereof ;
And a cutting step of cutting the surface-treated release paper so as to have a cut-out portion at the center or at one or more of the surfaces,
The cutting step
The length ratio of the broken line or dotted line (cut portion) of the cut portion to the uncut portion is set to 1: 1 to 3,
The step of fabricating the nanofiber layer
Preparing a polymer solution by mixing the polymer with a solvent and an ultraviolet screening agent to prepare a polymer solution;
An electrospinning step of electrospinning the polymer solution so as to have a basis weight of 0.3 g / m 2 to 30 g / m 2 and a fiber diameter of 30 nm to 3000 nm,
The UV-
Wherein the compound is any one 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 and combinations thereof
A method for producing an ultraviolet blocking skin adhesive beauty sheet comprising a center detachable release layer.
delete 9. The method of claim 8,
The polymer solution preparation step
A skin irritant, an anti-inflammatory agent, an antimicrobial agent, a drug, an antifungal agent, a nutrient, a sebum absorbent, a water absorbent, an antioxidant, an antioxidant, an antioxidant, an antioxidant, And a functional additive mixed with any one of functional additives selected from the group consisting of combinations thereof,
A method for producing an ultraviolet blocking skin adhesive beauty sheet comprising a center detachable release layer.
9. The method of claim 8,
The bonding step
And the resulting release layer and the nano fiber layer are thermocompression bonded at a temperature of 50 to 150 DEG C and a pressure of 0.5 to 0.6 kgf / cm < 2 >
A method for producing an ultraviolet blocking skin adhesive beauty sheet comprising a center detachable release layer.

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