Organic and inorganic hybrid type hydro-colloid UV protection patch and manufacturing method the same

Abstract

The present invention relates to an organic-inorganic hybrid hydrocolloid UV blocking patch having excellent skin adhesion and, in particular, improved UV blocking characteristics by using an organic UV blocker and an inorganic UV blocker together, and a method for manufacturing the same.

Description

Technology Field

[0001] The present invention relates to an organic-inorganic hybrid hydrocolloid UV blocking patch and a method for manufacturing the same, and more specifically, to an organic-inorganic hybrid hydrocolloid UV blocking patch and a method for manufacturing the same that has excellent skin adhesion even with repeated stretching and, in particular, improves UV blocking characteristics by using an organic UV blocker and an inorganic UV blocker together. Background Technology

[0003] In modern society, the population enjoying outdoor sports and leisure activities, such as golf or baseball, is increasing. Since these outdoor activities involve direct exposure of the skin to ultraviolet rays, skin damage and aging are unavoidable. In other words, because ultraviolet rays are a major cause of skin redness, swelling, freckles, and skin cancer upon exposure, most people wear hats or attach UV protection patches to their faces before engaging in outdoor activities to prevent these issues.

[0004] Looking at the prior art regarding the above-mentioned UV blocking patches, Korean Registered Patent Publication No. 10-1371987 discloses an adhesive patch that includes a UV blocking layer configured to have different UV blocking rates in stages and a functional material layer containing various types of functional substances, thereby more effectively blocking UV rays and providing the user with skin moisturizing, whitening, and fatigue recovery functions. Korean Registered Patent Publication No. 10-2217827 discloses a UV blocking patch comprising water-soluble gelling polymer, glycerin, dipropylene glycol, niacinamide, sodium polyacrylate, polyacrylic acid, hydroxyacetophenone, disodium EDTA, caprylyl glycol, tartaric acid, surfactant, adenosine, aluminum glycinate, sodium hyaluronate, Kakadu plum extract, and dipotassium glycyrrhizate as active ingredients.

[0006] However, UV protection patches according to the prior art selectively use either organic or inorganic UV protection agents. However, the organic UV protection agents do not have excellent UV protection effects, and while inorganic UV protection agents have excellent UV protection effects, their dispersion characteristics are poor, so there are limitations in their combination, resulting in a not very significant UV protection effect. In addition, UV protection patches according to the prior art have poor adhesion to curved areas such as the face, and as time passes after attachment to the face, moisture gradually evaporates and dries out, causing the skin adhesion to decrease and the patch to fall off the face. The problem to be solved

[0008] The present invention provides an organic-inorganic hybrid hydrocolloid UV blocking patch and a method for manufacturing the same, which maximizes the UV blocking effect by improving the dispersion characteristics of an inorganic UV blocker and, in particular, improves skin adhesion to stably adhere to the skin. However, the technical problems that the present invention aims to solve are not limited to those mentioned above, and other unmentioned problems will be clearly understood by a person skilled in the art from the description below. means of solving the problem

[0010] The organic-inorganic hybrid hydrocolloid UV blocking patch according to the present invention comprises: a base layer; The above-mentioned base layer is composed of a hydrocolloidal composition layer for UV protection coated on one or both sides thereof, wherein the hydrocolloidal composition layer for UV protection may be composed of a hydrophobic elastomer matrix, hydrocolloid particles dispersed within the hydrophobic elastomer matrix, and a UV blocker, wherein the hydrocolloidal composition layer for UV protection is composed of 50 to 70 weight% of a hydrophobic elastomer matrix, 25 to 45 weight% of hydrocolloid particles, and 1 to 5 weight% of a UV blocker, wherein the UV blocker is composed of 0.28 to 1.4 weight% of an inorganic UV blocker, 0.6 to 3 weight% of an organic UV blocker, and 0.12 to 0.6 weight% of a coupling agent, and wherein the organic UV blocker is diethylaminohydroxybenzoylhexyl benzoate, ethylhexyl methoxycinnamate, ethylhexyl triazone, homosalate, oxybenzone, bemotrigginol, octocrylene, It is preferably one of octyl salicylate or phenylbenzimidazole sulfonic acid, the inorganic sunscreen is titanium dioxide or zinc oxide, and the coupling agent is (3-acryloxypropyl)trimethoxysilane.

[0012] Additionally, the base layer is a polyurethane film or a nonwoven fabric, and the hydrophobic elastomer matrix may be a styrene-isoprene-styrene triblock copolymer or a styrene-butadiene-styrene block copolymer; the hydrocolloid particles are one or more selected from the group consisting of gelatin, collagen, pectin, carboxymethyl cellulose, ethyl cellulose, silk fibroin, xanthan gum, and alginate cross-linked by calcium ions; and the UV-blocking hydrocolloid composition further comprises a plasticizer selected from mineral oil, ester oil, glycerin, paraffin, propylene oxide-ethylene oxide copolymer, and polypropylene glycol. It may include, and the above-mentioned hydrocolloid composition for UV protection may additionally include one or more functional ingredients among collagen, vitamins, niacinamide, hyaluronic acid, and ceramide.

[0014] And the method for manufacturing an organic-inorganic hybrid hydrocolloid UV blocking patch according to the present invention comprises: a first step of preparing a base layer; a second step of mixing a hydrocolloid composition for UV blocking; a third step of heating the hydrocolloid composition for UV blocking prepared in the second step; a fourth step of applying the hydrocolloid composition for UV blocking heated in the third step to one or both sides of the base layer to form a hydrocolloid composition layer for UV blocking; a fifth step of cooling the hydrocolloid composition layer for UV blocking formed on one or both sides of the base layer in the fourth step to manufacture a patch sheet; and a sixth step of cutting the patch sheet manufactured in the fifth step into a patch shape that can be attached to the face; wherein the heating temperature in the third step is preferably 60 to 120 ℃. Effects of the invention

[0016] The organic-inorganic hybrid hydrocolloid UV blocking patch according to the present invention improves the dispersion characteristics of inorganic UV blockers and, by using them together with organic UV blockers, has the effect of maximizing the UV blocking effect. In addition, by adding hydrocolloid particles, it has excellent skin adhesion, allowing it to be stably attached to the skin without tearing or deformation even after repeated stretching and contraction after attachment, and has the advantage of being able to be conveniently and stably attached, especially to curved areas of the skin. Accordingly, the user can move or engage in activities even while the organic-inorganic hybrid hydrocolloid UV blocking patch is attached to the face, and nutrients contained in the UV-blocking hydrocolloid composition can be effectively delivered to the skin, among other effects. Brief explanation of the drawing

[0018] Figure 1 is a schematic diagram illustrating hydrogels and hydrocolloids, and FIG. 2 is a cross-sectional view of an organic-inorganic hybrid hydrocolloid UV blocking patch according to the present invention, and FIG. 3 is a diagram showing the usage state of an organic-inorganic hybrid hydrocolloid UV blocking patch according to the present invention, and FIG. 4 is a manufacturing process diagram of an organic-inorganic hybrid hydrocolloid UV blocking patch according to the present invention, and FIG. 5 is a manufacturing flowchart of an organic-inorganic hybrid hydrocolloid UV blocking patch according to the present invention. Specific details for implementing the invention

[0019] In this application, terms such as “comprising,” “having,” or “having” are intended to specify the existence of the features, numbers, steps, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0020] Furthermore, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this application.

[0021] Preferred embodiments of the present invention will be described in more detail below with reference to the attached drawings. To facilitate an overall understanding of the invention, the same reference numerals are used for identical components in the drawings, and redundant descriptions of identical components are omitted.

[0023] Hereinafter, an organic-inorganic hybrid hydrocolloid UV blocking patch (100) and a method for manufacturing the same according to the present invention will be described in detail with reference to the attached drawings. Fig. 1 attached to the present invention is a schematic diagram for explaining hydrogel and hydrocolloid, Fig. 2 is a cross-sectional view of an organic-inorganic hybrid hydrocolloid UV blocking patch (100) according to the present invention, Fig. 3 is a diagram of the usage state of an organic-inorganic hybrid hydrocolloid UV blocking patch (100) according to the present invention, Fig. 4 is a manufacturing process diagram of an organic-inorganic hybrid hydrocolloid UV blocking patch (100) according to the present invention, and Fig. 5 is a manufacturing flowchart of an organic-inorganic hybrid hydrocolloid UV blocking patch (100) according to the present invention.

[0025] Typically, hydrogels use water as a dispersion medium. Gel It refers to (gel), and hydrocolloid refers to a hydrophobic elastomer in which hydrocolloid particles are dispersed.

[0026] That is, as shown in Fig. 1, the hydrogel has a three-dimensional network structure by polymerizing a water-soluble monomer to form a water-soluble polymer, and then crosslinking the water-soluble polymer using a crosslinking agent.

[0027] Generally, a hydrogel refers to a material that can contain a significant amount of water without dissolving in an aqueous environment, having a network structure in which water-soluble polymers form three-dimensional crosslinks through physical (hydrogen bonding, van der Waals forces, hydrophobic interactions, or polymer crystals) or chemical (covalent bonding) bonds.

[0029] On the other hand, hydrocolloids have a paste form in which hydrophilic particles are dispersed in a hydrophobic elastomer. Therefore, hydrocolloids have gel-like properties and rubber-like elasticity and adhesiveness.

[0030] Therefore, the aforementioned hydrogel is formed into a three-dimensional network structure, possessing a gel-like shape, and has the characteristic of being severed even by small external forces due to a lack of elasticity and stretchability. On the other hand, the hydrocolloid is composed of hydrophilic particles and a hydrophobic elastomer that provides skin adhesion while possessing elasticity, and is characterized by excellent skin adhesion and elasticity.

[0032] The organic-inorganic hybrid hydrocolloid UV blocking patch (100) according to the present invention is composed of a base layer (20) as shown in FIG. 2; and a hydrocolloid composition layer (50) for blocking ultraviolet rays coated on one or both sides of the base layer (20), wherein the hydrocolloid composition layer (50) for blocking ultraviolet rays is composed of a hydrophobic elastomer matrix, hydrocolloid particles dispersed within the hydrophobic elastomer matrix, and an ultraviolet blocking agent.

[0034] That is, FIG. 2 illustrates a cross-section of an organic-inorganic hybrid hydrocolloid UV blocking patch (100) according to the present invention, wherein a hydrocolloid composition layer (50) for UV blocking of a certain thickness is formed on one or both sides of a base layer (20) and is provided to a consumer. By attaching the hydrocolloid composition layer (50) for UV blocking to a specific part of the face, the consumer blocks ultraviolet rays and also allows various functional ingredients contained in the hydrocolloid composition layer (50) for UV blocking to be supplied to the skin.

[0036] According to the present invention, the base layer (20) may be a polyurethane film or a nonwoven fabric. When the base layer (20) is composed of a nonwoven fabric, it is preferable that the basis weight be 7.0 to 70.0 g / m² and the thickness be 100 to 500 μm. If the basis weight and thickness of the nonwoven fabric are less than the above range, the tensile strength of the manufactured patch is weak, making it prone to tearing or wrinkling. Furthermore, if the basis weight and thickness of the nonwoven fabric exceed the above range, the weight may be heavy when in contact with the skin, causing discomfort, and consequently, the skin adhesion may decrease. Therefore, it is preferable that the basis weight of the nonwoven fabric constituting the base layer (20) according to the present invention be 7.0 to 70.0 g / m² and the thickness be 100 to 500 μm.

[0038] In addition, when the base layer (20) is composed of a polyurethane film, the polyurethane film is manufactured by mixing polyurethane with a surfactant and a solvent to prepare a polyurethane compound, then coating it on the surface of a release film, and performing a process of coagulation, washing, and drying. The polyurethane film manufactured as described above may preferably have a thickness of 15 to 50 μm.

[0040] According to the present invention, a hydrocolloid composition layer (50) for blocking ultraviolet rays may be formed on one or both sides of the base layer (20). The hydrocolloid composition layer (50) for blocking ultraviolet rays may be composed of a hydrophobic elastomer matrix, hydrocolloid particles, and an ultraviolet ray blocker, but is not limited thereto and can be appropriately selected and adjusted according to the use of the composition.

[0042] The hydrophobic elastomer matrix included in the above-mentioned hydrocolloidal composition layer (50) may be a styrene-isoprene-styrene triblock copolymer (hereinafter SIS) or a styrene-butadiene-styrene block copolymer (hereinafter SBS), but is not limited thereto.

[0043] The styrene content in the above SIS or SBS is in the range of 10 to 25 weight%, and a copolymer having a weight-average molecular weight of 100,000 to 140,000 is particularly preferred, and the hydrophobic elastomer matrix may be included in an amount of 50 to 70 weight% based on the total UV-blocking hydrocolloid composition (10).

[0045] The above-described UV-blocking hydrocolloid composition (10) may further include a plasticizer to reduce the viscosity of the hydrophobic elastomer and increase its flexibility, and the plasticizer may be any one of mineral oil, ester oil, glycerin paraffin, propylene oxide-ethylene oxide copolymer, and polypropylene glycol. The plasticizer is not limited thereto and may also vary depending on the type of hydrophilic polymer.

[0046] When a hydrophobic elastomer satisfying the above conditions is used as a matrix, the material itself exhibits excellent elasticity and recovery rate, resulting in superior skin adhesion to curved facial surfaces and the characteristic of being non-irritating to the skin.

[0048] In addition, the hydrocolloid particles dispersed in the hydrophobic elastomer matrix may exhibit a high water content as particles having a network structure in which the hydrophilic polymer forms three-dimensional crosslinks through physical bonding, e.g., hydrogen bonding, van der Waals forces, or hydrophobic interactions, or chemical bonding, e.g., covalent bonding.

[0049] The hydrophilic polymers constituting these hydrocolloid particles may include, for example, gelatin, collagen, pectin, carboxymethyl cellulose (hereinafter CMC), ethyl cellulose (hereinafter EC), silk fibroin, xanthan gum, or alginate cross-linked by calcium ions, or a combination thereof.

[0051] According to the present invention, the hydrocolloid particles may be included in an amount of 25 to 45 weight% based on the total hydrocolloid composition layer (50) for UV protection, and by adding the hydrocolloid particles, the skin adhesion is excellent, so that it can be stably attached to the skin without tearing or deformation even if it is stretched and contracted multiple times after attachment.

[0053] In addition, the UV-blocking hydrocolloid composition (10) of the present invention may additionally include a trace amount of a functional ingredient. In the present invention, the functional ingredient is a substance capable of performing functions such as moisture retention, whitening, wrinkle improvement, and UV blocking when applied to the skin, and includes both liquid and solid substances.

[0054] According to the present invention, examples of the functional ingredients may be one or more selected from the group consisting of collagen, vitamins, niacinamide, hyaluronic acid, and ceramide.

[0055] The aforementioned collagen is a fibrous protein found abundantly in animals, particularly mammals, and vitamins perform antioxidant functions and regulate cell proliferation and differentiation, and are therefore deeply related to skin care. Furthermore, niacinamide not only has the effect of cleansing the skin but also improves oily, troubled skin and activates skin cells to promote collagen secretion, while hyaluronic acid maintains skin moisture and elasticity and promotes wound healing. Ceramide is a component of the skin barrier that strengthens the skin barrier and is a natural protective barrier ingredient that prevents moisture evaporation from the stratum corneum.

[0056] By including the functional ingredients described above, the present invention can exhibit excellent efficacy in stabilizing skin tissue, promoting skin metabolism, moisturizing, preventing pigmentation changes, and preventing skin aging when using a UV blocking patch.

[0058] In addition, according to the present invention, the hydrocolloidal composition layer (50) for blocking ultraviolet rays may include an ultraviolet blocker for blocking ultraviolet rays, and it may be preferable for the ultraviolet blocker to simultaneously include an organic ultraviolet blocker and an inorganic ultraviolet blocker.

[0060] Inorganic sunscreens block ultraviolet rays by forming a protective barrier on the skin's surface that reflects the rays. On the other hand, organic sunscreens block ultraviolet rays by absorbing them and converting them into heat, which is then released.

[0061] According to the present invention, the organic sunscreen comprises diethylaminohydroxybenzoyl hexyl benzoate (hereinafter DHHB), ethylhexyl methoxycinnamate (hereinafter EHMC), butyl methoxydibenzoylmethane (hereinafter BMDBM), ethylhexyl triazone (hereinafter EHT), homosalate (3,3,5-trimethylcyclohexyl 2-hydroxybenzoate, hereinafter HMS), oxybenzone (2-hydroxy-4-methoxybenzophenone), and bemotrizinol (2,4-Bis[4-(2-ethylhexyloxy)-2-hydroxyphenyl]-6-(4-methoxyphenyl)-1,3,5-triazine), It may be any one of octocrylene (2-Ethylhexyl 2-cyano-3,3-diphenylacrylate), octyl salicylate (2-Ethylhexyl Salicylate), and phenylbenzimidazole sulfonic acid, and among these, DHHB, EHMC, BMDBM, etc. are easy to use as sunscreens considering excellent compatibility with colloids, UV blocking effect, and additional effects such as color.

[0064] Furthermore, the above-mentioned inorganic sunscreen may utilize titanium dioxide (TiO2) or zinc oxide (ZnO), and possesses the advantages of being environmentally friendly and causing minimal burden on the skin. However, the inorganic sunscreen exhibits poor dispersion characteristics, which significantly affects the UV blocking properties, transparency, and stability of the manufactured UV-blocking patch. Therefore, it is crucial to improve the dispersion characteristics of the inorganic sunscreen during use.

[0066] Accordingly, the UV blocker included in the hydrocolloid composition (10) for UV blocking according to the present invention can improve the UV blocking effect by simultaneously including an organic UV blocker and an inorganic UV blocker. In particular, in the present invention, it may be desirable to use a coupling agent together to improve the dispersion characteristics of an inorganic UV blocker, which is difficult to blend due to poor dispersion characteristics.

[0067] The above coupling agent is intended to improve the dispersion characteristics of the above inorganic sunscreen, and according to the present invention, using (3-acryloxypropyl)trimethoxysilane (hereinafter AOPTMS) may be most preferable in terms of dispersion characteristics.

[0069] That is, according to the present invention, the hydrocolloid composition layer (50) for blocking ultraviolet rays may be composed of 50 to 70 weight% of a hydrophobic elastomer matrix, 25 to 45 weight% of hydrocolloid particles, and 1 to 5 weight% of an ultraviolet ray blocker, and the ultraviolet ray blocker may most preferably be composed of 0.28 to 1.4 weight% of an inorganic ultraviolet ray blocker, 0.6 to 3 weight% of an organic ultraviolet ray blocker, and 0.12 to 0.6 weight% of a coupling agent.

[0071] When the above-mentioned hydrocolloid composition (10) for UV blocking has the composition ratio as described above, the UV blocking properties of the organic-inorganic hybrid hydrocolloid UV blocking patch (100) produced are the best, and transparency and skin adhesion may be the best.

[0073] Hereinafter, a method for manufacturing an organic-inorganic hybrid hydrocolloid UV blocking patch (100) according to the present invention will be described.

[0074] A method for manufacturing an organic-inorganic hybrid hydrocolloid UV blocking patch (100) according to the present invention may preferably comprise: a first step of preparing a base layer (20) as illustrated in FIG. 5; a second step of mixing a hydrocolloid composition (10) for UV blocking; a third step of heating the hydrocolloid composition (10) for UV blocking prepared in the second step; a fourth step of applying the hydrocolloid composition (10) heated in the third step to one or both sides of the base layer (20) to form a hydrocolloid composition layer (50) for UV blocking; a fifth step of cooling the hydrocolloid composition layer (50) for UV blocking formed on one or both sides of the base layer (20) in the fourth step to manufacture a patch sheet (200); and a sixth step of cutting the patch sheet (200) manufactured in the fifth step into a patch shape that can be attached to the face.

[0076] First, as a first step, a step of preparing a base layer (20) is performed. As described above, the base layer (20) may be composed of a polyurethane film or a non-woven fabric. In this case, the polyurethane film preferably has a thickness of 15 to 50 μm, and when composed of a non-woven fabric, the basis weight is 7.0 to 70 g / m² and the thickness is preferably 100 to 500 μm.

[0077] After the first step, the second step involves mixing a hydrocolloid composition (10) for UV protection. At this time, the hydrocolloid composition (10) for UV protection may preferably consist of 50 to 70 weight% of a hydrophobic elastomer matrix, 25 to 45 weight% of hydrocolloid particles, and 1 to 5 weight% of a UV blocker.

[0078] According to the present invention, the sunscreen uses an organic sunscreen and an inorganic sunscreen simultaneously, and in particular, it may be preferable to use a coupling agent together to improve the dispersion characteristics of the inorganic sunscreen within the hydrocolloid composition (10) for sunscreen.

[0079] That is, by using 0.28 to 1.4 weight% of an inorganic UV blocker, 0.6 to 3 weight% of an organic UV blocker, and 0.12 to 0.6 weight% of a coupling agent, the dispersion characteristics of the inorganic UV blocker can be improved within the hydrocolloid composition (10) for UV blocking that is manufactured.

[0080] By improving the dispersion characteristics of the inorganic UV blocker as described above, the UV blocking characteristics, transparency, and stability of the above-mentioned hydrocolloid composition (10) for UV blocking can be improved.

[0081] The above second step can be performed using a known mixer, etc. That is, the second step can be performed by introducing a hydrophobic elastomer matrix, hydrocolloid particles, and a UV blocker into a known mixer and mixing them, and it is also possible to perform the step by introducing a plasticizer and a functional ingredient together.

[0083] Afterward, a third step is performed to heat the ultraviolet blocking hydrocolloid composition (10) prepared in the second step above. By heating as described above, the ultraviolet blocking hydrocolloid composition (10) can be liquefied. In the third step, it may be preferable to heat the ultraviolet blocking hydrocolloid composition (10) to 60 to 120°C to liquefy it.

[0084] In addition, through the third step above, the hydrocolloid composition (10) for blocking ultraviolet rays is liquefied, allowing for the additional mixing of plasticizers or functional ingredients.

[0086] As described above, the hydrocolloid composition (10) for ultraviolet blocking, which is liquefied through the third step, is applied to one or both sides of the base layer (20) to form a hydrocolloid composition layer (50) for ultraviolet blocking, thereby performing the fourth step. That is, as shown in FIG. 4, the base layer (20) wound on the supply roll (30) is continuously supplied, and the hydrocolloid composition (10) for ultraviolet blocking is uniformly applied to one or both sides of the base layer (20) through the coating roll (40).

[0087] That is, the fourth step above may apply the liquefied ultraviolet blocking hydrocolloid composition (10) prepared in the third step to one or both sides of the base layer (20) through a known process. That is, the coating of the ultraviolet blocking hydrocolloid composition layer (50) may be performed using processes such as roll coating, bar coating, film coater coating, and casting.

[0089] FIG. 4 is a manufacturing process diagram of an organic-inorganic hybrid hydrocolloid UV blocking patch according to the present invention, wherein a base layer (20) wound on a supply roll (30) is continuously supplied, and a hydrocolloid composition (10) for blocking ultraviolet rays is uniformly applied to one surface of the base layer (20) through a pair of coating rolls (40).

[0090] In addition, by using the same equipment, the hydrocolloid composition (10) for ultraviolet protection can be uniformly applied to the other side of the base layer (20) on which the hydrocolloid composition (10) for ultraviolet protection is applied as described above, thereby enabling the application of the hydrocolloid composition (10) for ultraviolet protection to both sides of the base layer (20).

[0091] Through the above fourth step, the ultraviolet blocking hydrocolloid composition (10) applied to one or both sides of the base layer (20) forms an ultraviolet blocking hydrocolloid composition layer (50).

[0092] According to the present invention, it may be preferable for the ultraviolet blocking hydrocolloid composition (10) to be applied to one or both sides of a base layer (20) with a thickness of 50 μm to 250 μm. That is, if the thickness of the ultraviolet blocking hydrocolloid composition layer (50) applied to the base layer (20) is less than 50 μm, a problem may occur where the ultraviolet blocking hydrocolloid composition layer (50) tears when attached to the skin, and if it exceeds 250 μm, a problem may occur where it slides down when attached to the skin.

[0094] Afterwards, the 5th step involves cooling the ultraviolet blocking hydrocolloid composition layer (50) formed on one or both sides of the base layer (20) in the 4th step to manufacture a patch sheet (200).

[0095] In the fifth step above, the hydrocolloid composition layer (50) for UV blocking formed on the base layer (20) is cooled to room temperature to cure, thereby producing a patch sheet (200) capable of producing an organic-inorganic hybrid hydrocolloid UV blocking patch (100) according to the present invention.

[0097] In addition, the patch sheet (200) manufactured in the fifth step can be cut into a patch shape that can be attached to the face, etc., in the sixth step, and thus the manufacturing of the organic-inorganic hybrid hydrocolloid UV blocking patch (100) according to the present invention can be completed as shown in FIG. 3.

[0099] The present invention will be examined in more detail below through examples and comparative examples. However, the present invention is not limited to the following examples.

[0101] [Examples 1 to 5]

[0103] A hydrocolloid composition (10) for UV protection was prepared by having the composition ratio as shown in [Table 1] below, and then the hydrocolloid composition (10) for UV protection prepared as above was coated on one surface of a base layer (20) to a thickness of 100 μm to form a hydrocolloid composition layer (50) for UV protection. At this time, the base layer (20) has a basis weight of 40 g / m² 2 A polyester nonwoven fabric with a thickness of 350 μm was used, and a patch sheet (200) test specimen was prepared for manufacturing an organic-inorganic hybrid hydrocolloid UV blocking patch (100) as in Examples 1 to 5 after undergoing a cooling process.

[0105] [Comparative Example 1]

[0107] A test specimen of a patch sheet (200) was prepared under the same conditions as in [Example] 1 above, but the test specimen was prepared using BMDBM, an organic UV blocking agent, as the UV blocking agent.

[0109] [Comparative Example 2]

[0111] A test specimen of a patch sheet (200) was prepared under the same conditions as in Example 1 above, but using titanium dioxide, an inorganic UV blocker, without a coupling agent as the UV blocker.

[0113] And test specimens such as [Examples 1 to 5] and [Comparative Examples 1 to 2] were prepared with the composition ratios as shown in [Table 1] above, and in [Table 1], parentheses indicate the weight% of each component included in the hydrocolloid composition (10) for UV blocking.

[0115] hydrophobic elastomer matrix Hydrocolloid particles sunscreen Organic system Inorganic coupling agent Example 1 SIS (50) CMC (45) BMDBM (3) TiO2 (1.4) AOPTMS (0.6) Example 2 SIS (60) EC (38) EHMC (1) ZnO (0.8) AOPTMS (0.2) Example 3 SIS (70) CMC (27) BMDBM (1.6) TiO2 (1.2) AOPTMS (0.2) Example 4 SBS (54) EC (45) EHMC (0.6) ZnO (0.35) AOPTMS (0.05) Example 5 SBS (65) CMC (33) DHHB (1) TiO2 (0.8) AOPTMS (0.2) Comparative Example 1 SIS (65) CMC (32) BMDBM (3) - - Comparative Example 2 SBS (70) EC (28.6) - TiO2 (1.4) -

[0117] The physical properties of the patch sheet (200) test specimen manufactured as described above, namely the UV shielding rate (%), adhesive strength, and transparency, were measured in the following manner, and the results are shown in [Table 2].

[0119] 1) UV shielding rate (%)

[0121] The UV shielding rate (%) of the patch sheet (200) test specimens prepared according to [Examples 1 to 5] and [Comparative Examples 1 to 2] above was evaluated by measuring the UV transmittance (%) at wavelengths of 280 to 400 nm using a spectrophotometer, and then using the following equation (1).

[0123]

[0125] The above UV shielding rate (%) represents the average shielding rate for the UV region (280 to 400 nm) measured by a spectrophotometer.

[0127] 2) Adhesion

[0129] The adhesiveness of the patch sheet (200) test specimens prepared according to [Examples 1 to 5] and [Comparative Examples 1 to 2] above was measured according to KS T 1028 (Test method for adhesive tapes and adhesive sheets). Specifically, a test specimen with a width of 2.5 cm and a length of 30 cm was attached to the top of a SUS #304 stainless steel plate, and the specimen was compressed by reciprocating once at a speed of 300 mm / min using a compression roller with a load of 2 kg. After 20 minutes had passed since the test specimen was compressed as described above, the adhesive strength was measured using an adhesive strength measuring instrument.

[0131] 3) Transparency

[0133] The transparency of the UV-blocking hydrocolloid composition (10) prepared with the composition shown in Table 1 was compared by measuring the haze value, which indicates the degree of cloudiness of the UV-blocking hydrocolloid composition (10). Specifically, the UV-blocking hydrocolloid composition (10) prepared with the composition shown in [Table 1] was vacuum degassed and then coated onto a glass plate to a thickness of 0.54 mm. After cooling it at room temperature, the haze value was measured according to ASTM D-1003 (Standard Test Method for Haze and Luminous Transmittance of Transparent Plastics) at a temperature of 23°C using a haze meter (model name: HM-150) from MURAKAMI. A smaller haze value of the UV-blocking hydrocolloid composition (10) indicates superior transparency.

[0135] UV protection rate (%) Adhesion (kgf / 25mm) Haze value Example 1 98 1.75 2.4 Example 2 94 1.65 2.8 Example 3 97 1.54 3.2 Example 4 92 1.78 3.5 Example 5 93 1.60 3.3 Comparative Example 1 72 1.70 4.5 Comparative Example 2 75 1.73 14.2

[0137] Looking at [Table 2] above, it can be seen that the test specimens of Examples 1 to 5 have an ultraviolet blocking rate (%) of 92% or higher, indicating an A grade of ultraviolet blocking. Additionally, looking at the adhesion strength measurement results in [Table 2] above, it can be seen that the test specimens of Examples 1 and 4, which have the highest composition of hydrocolloid particles, showed 1.75 and 1.78 kgf / 25mm, respectively, indicating the best adhesion strength.

[0139] However, in the case of Comparative Examples 1 and 2, the composition of hydrocolloid particles, namely CMC and EC, is 32 wt% and 28.6 wt%, respectively, and exhibits excellent adhesion of 1.70 kgf / 25 mm or more, but it can be confirmed that the UV blocking rate (%) is relatively poor at 72% and 75%, respectively, as only organic UV blockers or inorganic UV blockers are included alone.

[0141] In addition, looking at the transparency measurement results, the specimen of Example 1 showed the best transparency with a haze value of 2.4, while the specimen of Comparative Example 2, which used 1.4 wt% of TiO2, an inorganic UV blocker without a coupling agent, showed the worst haze value of 14.2 due to the occurrence of whitening. That is, it can be seen that the specimens of Examples 1 to 5 showed excellent transparency with haze values ​​of 2.4 to 3.5.

[0143] As described above, the organic-inorganic hybrid hydrocolloid UV blocking patch (100) according to the present invention has the advantage of having excellent UV blocking effects by using a coupling agent to improve the dispersion characteristics of an inorganic UV blocker and using it together with an organic UV blocker. Additionally, by using hydrocolloid particles, the adhesive strength is improved, resulting in excellent skin adhesion and the ability to stably attach to curved areas of the skin. Furthermore, the user can move or engage in activities even while wearing the organic-inorganic hybrid hydrocolloid UV blocking patch (100) according to the present invention on their face, and the functional ingredients included in the UV blocking hydrocolloid composition can be effectively delivered to the skin.

[0145] The present invention has been described with reference to the experimental examples illustrated in the drawings, but this is merely illustrative, and those skilled in the art will understand that various modifications and equivalent alternative experimental examples are possible therefrom. Furthermore, those skilled in the art will understand that the present invention can be easily modified into other specific forms without altering the technical spirit or essential features of the invention. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive, and the true scope of technical protection of the present invention should be determined by the technical spirit of the appended claims. Explanation of the symbols

[0147] 10: Hydrocolloid composition 20 : Base layer 40 : Supply Roll 50: Hydrocolloid composition layer 100: Organic-Inorganic Hybrid Hydrocolloid UV Blocking Patch 200 : Patch Sheet

Claims

Claim 1 An organic-inorganic hybrid hydrocolloid UV blocking patch characterized by comprising: a base layer; and a layer of a hydrocolloid composition for UV blocking coated on one or both sides of the base layer, wherein the layer of the hydrocolloid composition for UV blocking comprises 50 to 70 weight% of a hydrophobic elastomer matrix, 25 to 45 weight% of hydrocolloid particles dispersed within the hydrophobic elastomer matrix, and 1 to 5 weight% of a UV blocker, wherein the UV blocker comprises 0.28 to 1.4 weight% of an inorganic UV blocker, 0.6 to 3 weight% of an organic UV blocker, and 0.12 to 0.6 weight% of a coupling agent. Claim 2 delete Claim 3 An organic-inorganic hybrid hydrocolloid UV blocking patch according to claim 1, characterized in that the base layer is a polyurethane film or a non-woven fabric. Claim 4 An organic-inorganic hybrid hydrocolloid UV blocking patch according to claim 1, characterized in that the hydrophobic elastomer matrix is ​​a styrene-isoprene-styrene triblock copolymer (SIS) or a styrene-butadiene-styrene block copolymer (SBS). Claim 5 An organic-inorganic hybrid hydrocolloid UV blocking patch according to claim 1, characterized in that the hydrocolloid particles are one or more selected from the group consisting of gelatin, collagen, pectin, carboxymethyl cellulose, ethyl cellulose, silk fibroin, xanthan gum, and alginate cross-linked with calcium ions. Claim 6 An organic-inorganic hybrid hydrocolloid UV blocking patch according to claim 1, characterized in that the UV blocking hydrocolloid composition further comprises one or more functional ingredients selected from collagen, vitamin, niacinamide, hyaluronic acid, and ceramide. Claim 7 A first step of preparing a base layer; a second step of mixing a hydrocolloidal composition for UV protection, comprising 50 to 70 weight% of a hydrophobic elastomer matrix, 25 to 45 weight% of hydrocolloid particles, and 1 to 5 weight% of a UV blocker, wherein the UV blocker comprises 0.28 to 1.4 weight% of an inorganic UV blocker, 0.6 to 3 weight% of an organic UV blocker, and 0.12 to 0.6 weight% of a coupling agent; a third step of heating the hydrocolloidal composition for UV protection prepared in the second step; a fourth step of applying the hydrocolloidal composition for UV protection heated in the third step to one or both sides of the base layer to form a layer of the hydrocolloidal composition for UV protection; and a fifth step of manufacturing a patch sheet by cooling the layer of the hydrocolloidal composition for UV protection formed on one or both sides of the base layer in the fourth step. A method for manufacturing an organic-inorganic hybrid hydrocolloid UV blocking patch, comprising: a sixth step of cutting the patch sheet manufactured in the fifth step into a patch shape that can be attached to the face.

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