Skin-adhering concealing sheet, and method for manufacturing the same.

Abstract

The present invention provides a skin-adhering concealing sheet that is thin for comfortable wear, yet conceals skin blemishes, birthmarks, spots, and other damage / scars and / or skin unevenness, or allows for makeup application aimed at altering or concealing skin characteristics, while maintaining a natural appearance, feel, and texture, having low bending rigidity to conform to the skin's texture and elasticity, and providing sufficient strength to prevent peeling during daily activities, while also being easily removable. [Solution] The skin-adhering opacity sheet 10 is a flexural stiffness index E×h sheet with a thickness of 50 nm to 200 μm containing a coating elastomer component. 3 The value is 8.0 × 10 3 An opaque dot pattern layer is attached to at least one side of an elastomer layer adjusted to nNm or less, with multiple dots containing one or more opaque powders having a refractive index of 1.5 to 3.0 and a dot-supporting elastomer component arranged in a regular repeating pattern vertically and horizontally. The material does not have an adhesive layer or a bonding agent layer.

Description

[Technical Field]

[0001] The present invention relates to a skin-adhering concealing sheet that is used by being applied to the skin to conceal damage, damage scars, and uneven skin texture such as blemishes, birthmarks, post-inflammatory hyperpigmentation, senile lentigines, seborrheic keratosis, solar lentigines, moles, melasma, petal-shaped lentigines, freckles, acquired dermal melanocytosis, or nevi, vitiligo, erythema, purpura, acne, acne scars, pimples, rosacea, hemangiomas, vascular lesions, poor circulation, wounds, scars, surgical scars, treatment scars, sunburn, sunburn marks, uneven skin tone, dullness, pigment abnormalities, hyperpigmentation, discoloration, dark circles around the eyes, sagging, wrinkles, and tattoos, or for applying makeup aimed at changing or concealing skin characteristics, and to a method for manufacturing the same. [Background technology]

[0002] During the COVID-19 pandemic, many women opted for minimal makeup due to reduced opportunities to go out and continued mask-wearing, leading to a decrease in demand for makeup products. However, in the post-pandemic era, increased opportunities to go out and the lifting of mask-wearing restrictions have suddenly led to more skin exposure. This has resulted in a significant shift in consumers' awareness of skincare, and demand for makeup products has increased compared to pre-pandemic levels.

[0003] Before and after the COVID-19 pandemic, a wide variety of cosmetics were available, including skincare products such as serums and creams for moisturizing, whitening, and anti-aging; skin protection cosmetics for UV protection; makeup products such as foundations, point makeup, and face paint applied to make one look beautiful or improve their mood; and concealing makeup products such as foundations, concealers, and face powders that minimize the appearance of pigmentation abnormalities, hyperpigmentation, and uneven skin tone, such as blemishes, birthmarks, spots, uneven skin tone, dullness, dark circles, acne scars, scars, surgical scars, treatment marks, injuries, and other damage-related issues. However, in the post-COVID-19 era, consumer demand for beautiful skin and a more attractive appearance has become even higher than before the pandemic.

[0004] When skin pigmentation abnormalities or hyperpigmentation such as blemishes, birthmarks, spots, uneven skin tone, dullness, dark circles, acne scars, injuries, or scars are dark, uneven, or widespread, so-called light makeup using skincare cosmetics is insufficient to conceal them and does not provide a fundamental solution. On the other hand, using regular makeup cosmetics or concealing makeup cosmetics necessitates heavy application, resulting in what is known as heavy makeup.

[0005] On the other hand, while it was known before the COVID-19 pandemic to cover areas of skin with pigmentation abnormalities, hyperpigmentation, or uneven skin tone, such as blemishes, birthmarks, spots, uneven skin tone, acne scars, injuries, and scars, this practice often made the affected areas more noticeable and was therefore avoided. In recent years, adhesive cosmetic sheets have been gaining attention as a way to easily conceal blemishes, birthmarks, spots, uneven skin tone, acne scars, injuries, and scars, or to alter or conceal skin characteristics through makeup application.

[0006] Patent Document 1 discloses a cosmetic sheet for concealing areas of skin such as blemishes, birthmarks, spots, uneven skin tone, acne scars, injuries, and other pigment abnormalities, pigmentation, and uneven skin texture, which is described as "a cosmetic sheet for application to discolored areas of the skin, comprising a thin film on one side which is applied to the skin, a complementary color layer disposed on the other side of the thin film which contains a color tone that is complementary to the color of the discolored area, a light scattering layer containing a reflective material disposed on the complementary color layer, and a coloring layer containing a colorant disposed on the light scattering layer."

[0007] These cosmetic sheets consist of one or more solid-colored layers that are layered to conceal areas of pigment abnormalities, hyperpigmentation, and uneven skin tone, such as blemishes, birthmarks, spots, discoloration, acne scars, injuries, and other marks. They scatter and reflect light to make blemishes and wrinkles less noticeable. However, because they are solid-colored, the boundary between the sheet and the skin can look unnatural, or the bending rigidity of the colored layer may be too high, resulting in insufficient conformity to the skin's texture or brittleness, causing an unnatural appearance, feel, and texture. Furthermore, when adhesives or glues are used to adhere the cosmetic sheet to the skin, people with sensitive skin may experience skin irritation or rashes. Differences in tensile stress between the skin and the cosmetic sheet, and uneven adhesion to the skin's texture, can also easily cause discomfort in terms of feel and texture. Moreover, if the adhesion is too strong, it can cause skin damage or pain when removed, while if the adhesion is too weak, it peels off easily. [Prior art documents] [Patent Documents]

[0008] [Patent Document 1] International Publication No. 2019 / 073626 [Overview of the project] [Problems that the invention aims to solve]

[0009] This invention was made to solve the aforementioned problems, and even with reduced bending rigidity to improve adhesion to the skin and comfort, it addresses skin blemishes, birthmarks, post-inflammatory hyperpigmentation, senile lentigines, seborrheic keratosis, solar lentigines, moles, melasma, petal-shaped lentigines, freckles, acquired dermal melanocytosis, or nevi, vitiligo, erythema, purpura, acne, acne scars, pimples, rosacea, hemangiomas, vascular lesions, poor circulation, wounds, scars, surgical scars, treatment marks, sunburn, sunburn marks, uneven skin tone, dullness, pigment abnormalities, hyperpigmentation, discoloration, and perieyelid blemishes. The objective is to provide a skin-adhering concealing sheet and a method for manufacturing the same, which can conceal at least one of the damages or scars selected from sagging, wrinkles, and tattoos, or skin unevenness, or which can be applied with the aim of altering or concealing skin characteristics, without any discomfort in appearance, touch, or texture, has low bending rigidity to follow the texture and elasticity of the skin, can be attached with sufficient strength to not peel off in daily life without adhesives or glues, and can be easily removed by washing. [Means for solving the problem]

[0010] To achieve the aforementioned objective, the skin-adhering opacity sheet is characterized in that at least one side of an elastomer layer with a thickness of 50 nm to 200 μm containing a film-forming elastomer component has an opacity dot pattern layer attached to it, in which multiple dots containing at least one opacity powder with a refractive index of 1.5 to 3.0 and a dot-supporting elastomer component are arranged in a regular repeating pattern vertically and horizontally, and the sheet does not have either an adhesive layer or a bonding agent layer.

[0011] Preferably, the skin-adhering opacity sheet has a repeating pattern in which the multiple dots are arranged at the centers and vertices of a honeycomb-shaped regular hexagon.

[0012] This skin-adhering concealing sheet may be intended to adhere to the skin on the side of the elastomer layer facing the concealing dot pattern layer or the opposite side thereof.

[0013] This skin-adhesive masking sheet is such that the elastomer component for the film of the elastomer layer is at least one selected from polymers having an interpenetrating polymer network (IPN) structure which is a gel composed of polyurethane, silicone, styrene-butadiene-styrene copolymer, styrene-farnesene block copolymer, styrene-isoprene copolymer, polyisoprene copolymer, polylactic acid· polyethylene glycol copolymer, polycaprolactone, chloroprene, nitrile rubber, latex, styrene-based elastomer, polylactic acid elastomer, polyvinyl alcohol, polyvinyl acetate, polyol, olefin-based elastomer, polyvinyl chloride, polyester-based elastomer, nylon-based elastomer, natural rubber, natural polymer component, and a gel composed of polyvinyl alcohol and polymethacrylic acid.

[0014] This skin-adhesive masking sheet is such that the elastomer layer has a value of E×h

[0016] , (where E represents the elastic modulus of the elastomer layer and h represents the thickness of the elastomer layer) of 8.0×10 3 nNm or less, preferably 300 nNm or less, more preferably 20 nNm or less, so that it can adhere to the skin without any discomfort in appearance, touch, and texture without having either the adhesive or the bonding agent.

[0015] This skin-adhesive masking sheet is such that the masking powder is, for example, a white powder containing at least one selected from titanium oxide, zinc oxide, aluminum oxide, calcium carbonate powder, barium sulfate powder, silica, mica, talc, sericite, and starch powder as a constituent component, a mixed powder of the white powder and at least one selected from black, yellow, or red powders such as iron oxide or its coating (for example, a coating surface-treated with silicone), carbonyl iron powder, iron oxide-coated aluminum oxide, carbon black, and vegetable charcoal.

[0016] This skin-adhesive concealing sheet may be such that the concealing dot pattern layer contains the concealing powder and a black coloring material, a red coloring material, and / or a yellow coloring material, and / or the elastomer layer contains a black coloring material, a red coloring material, and / or a yellow coloring material.

[0017] This skin-adhesive concealing sheet may be such that the concealing dot pattern layer and / or the elastomer layer contains any one or more coloring materials of a white coloring material, a black coloring material, a red coloring material, a yellow coloring material, an orange coloring material, a green coloring material, a blue coloring material, a purple coloring material, a gold coloring material, a silver coloring material, and an interference coloring material.

[0018] This skin-adhesive concealing sheet may be such that the concealing dot pattern layer and / or the elastomer layer contains a pigment and / or a dye.

[0019] This skin-adhering opacity sheet contains pigments and / or dyes which are oxides, hydroxides, or sulfides of at least one of the following metals: iron, titanium, zinc, chromium, and aluminum, or silica-coated or aluminum-coated materials, silica-coated aluminum pigments, iron oxide-coated aluminum pigments, gold nanoparticle-coated aluminum pigments, tin oxide, chromate, carbonyl iron powder, carbon black and / or vegetable charcoal, ultramarine, conyrochrome, manganese violet, lake, barium sulfate, calcium carbonate, synthetic fluorophlogopite, boron nitride, silica, kaolin, sericite, talc, inorganic material-coated talc, mica, synthetic fluorphlogopite, titanium oxide-coated mica, barium sulfate-coated mica, silica-coated mica, aluminum oxide-coated mica, zinc stearate, magnesium stearate, The color modifier is at least one of the following: aluminum distearate, zinc myristate, zinc laurate, glitter, polyamide powder, polymethyl methacrylate powder, nylon powder, silicone powder, polyacrylic acid ester, corn starch, silk powder, hemp cellulose powder, azo pigments, phthalocyanine pigments, quinoline pigments, xanthene pigments, indigo pigments, carotenoid pigments, anthocyanin pigments, saffron pigment, safflower yellow pigment, betalain pigment, chlorophyll pigment, cochineal pigment, red yeast rice pigment, spirulina pigment, Dunaliella carotene pigment, betalain pigment, chlorophyll pigment, and other natural pigments, organic pigments, and / or hybrids of at least one of these powders and at least one of these pigments.

[0020] This skin-adhering opacity sheet may contain light-diffusing particles selected from silica particles, mica particles, nylon particles, polymethyl methacrylate particles, polyacrylic acid particles, borosilicate glass particles, and encapsulated particles, which have different refractive indices from the film-forming elastomer component and the dot-supporting elastomer component.

[0021] In this skin-adhering opacity sheet, it is preferable that the mass ratio of the opacity powder to the dot-supporting elastomer component in the opacity dot pattern layer is 2:8 to 8:2.

[0022] When preparing a composition for a dot pattern layer of this skin-adhering opacity sheet, which contains the opacity powder and the dot-supporting elastomer component, it is preferable that the solid content concentration of the opacity powder and the dot-supporting elastomer component in this composition is 10 to 83% by mass.

[0023] In this skin-adhering opacity sheet, it is preferable that the diameter of the dots is 50 to 5000 μm, and / or that the dot occupancy rate, which is the ratio of the area of ​​the dots to the area of ​​at least one surface of the elastomer layer to which the opacity dot pattern layer is attached, is 25 to 75%.

[0024] This skin-adhering concealing sheet is characterized in that the concealing powder has, for example, an average particle size of 30 to 5000 nm, more preferably 80 to 250 nm.

[0025] This skin-adhering opacity sheet is characterized in that the dot-supporting elastomer component is selected from, for example, polyurethane, silicone, styrene-butadiene-styrene copolymer, styrene-farnesene block copolymer, styrene-isoprene copolymer, polyisoprene copolymer, polylactic acid-polyethylene glycol copolymer, polycaprolactone, chloroprene, nitrile rubber, latex, styrene-based elastomer, polylactic acid elastomer, polyvinyl alcohol, polyvinyl acetate, polyol, olefin-based elastomer, polyvinyl chloride, polyester-based elastomer, nylon-based elastomer, naturally derived rubber, naturally derived polymer components, and polymers having an interpenetrating polymer network (IPN) structure, which is a gel composed of polyvinyl alcohol and polymethacrylic acid.

[0026] In this skin-adhering concealing sheet, it is preferable that the dot-supporting elastomer component is of the same type as the film-forming elastomer component.

[0027] Preferably, this skin-adhering opacity sheet has opacity such that the Δaverage luminance value, which is the difference in average luminance in the luminance histogram when attached to white paper and black paper, is 125 or less, or the light transmittance at a wavelength of 700 nm measured by an ultraviolet-visible spectrophotometer is 70% or less, or it can conceal stain models colored on a substrate plate with five stages of stain models in order of lightness and darkness (for example, DS-50 / 20 (a stain plate colored with five stages of stain models in order of lightness and darkness manufactured by Viewlux Co., Ltd., or an equivalent thereto), where the L* value, a* value, and b* value are 69.2, 10.5, and 19.5 respectively, and the difference in L* value ΔL* from the substrate is -1.3 or less, the difference in a* value Δa* is 0.9 or more, and the difference in b* value Δb* is 1.0 or more, i.e., the opacity evaluation value is 0.5 or more.

[0028] This skin-adhering opacity sheet has an elastomer layer whose bending stiffness index is E×h 3 The value is 8.0 × 10 3 It is preferable that the value be nNm or less, preferably 300nNm or less, and more preferably 20nNm or less.

[0029] This skin-adhering opacity sheet may adhere to the skin without having any adhesive layer or bonding agent layer by peeling off the attached release substrate layer on the side of the elastomer layer facing the opacity dot pattern layer or the opposite side thereof, or by dissolving or leaching out the sacrificial layer or support layer that is soluble in water, alcohol, polyhydric alcohol, polyol, a mixture containing any of these, lotion, or lotion-type cosmetic / beauty serum that is attached to it.

[0030] Preferably, this skin-adhering concealing sheet is intended to conceal, or to apply makeup intended to alter or conceal, skin irregularities, or to change or conceal skin features, for example, skin blemishes, birthmarks, post-inflammatory hyperpigmentation, senile lentigines, seborrheic keratosis, solar lentigines, moles, melasma, petal-shaped lentigines, freckles, acquired dermal melanocytosis, or nevi such as spots, vitiligo, erythema, purpura, acne, acne scars, pimples, rosacea, hemangiomas, vascular lesions, poor circulation, wounds, scars, surgical scars, treatment marks, sunburn, sunburn marks, uneven skin tone, dullness, pigment abnormalities, hyperpigmentation, discoloration, dark circles around the eyes, sagging, wrinkles, and tattoos, or to alter or conceal skin features.

[0031] This skin-adhering concealing sheet may contain topical drug components in the elastomer layer and / or the concealing dot pattern layer that come into contact with the skin.

[0032] The skin-adhering concealing sheet may contain the topical drug components as fermented products, plant extracts, or animal extracts containing anti-inflammatory components, wound healing components, antioxidant components, antibacterial components, antibiotics, skin beautifying components, skin whitening components, anti-wrinkle components, anti-acne components, cell activating components, blood circulation promoting components, moisturizing components, and / or components having any of these functions, and / or these topical drug components may be supported in microcapsules coated with inclusion compounds such as cyclodextrin, gel-like substances such as agar or alginic acid, porous powders such as mesoporous silica, or shell or membrane substances such as lipids or gelatin.

[0033] The skin-adhering concealing sheet may have the elastomer layer containing the topical drug component and / or the concealing dot pattern layer covered with a topical drug component release control layer.

[0034] This skin-adhering opacity sheet may have a release substrate layer attached to the side of the elastomer layer facing the opacity dot pattern layer or the opposite side thereof, or a sacrificial layer or support layer soluble in water, alcohol, polyhydric alcohol, polyol, acetone, or a mixture containing any of these, lotion, or a lotion-type cosmetic / serum, or a permeable layer or water-retaining layer attached to the sacrificial layer or support layer soluble in water, alcohol, polyhydric alcohol, polyol, acetone, or a mixture containing any of these, lotion, or a lotion-type cosmetic / serum.

[0035] This skin-adhering opacity sheet is characterized in that the material of the sacrificial layer / support layer is a polysaccharide selected from starch, alginic acid, xanthan gum, guar gum, cellulose, hyaluronic acid, and any derivative thereof, and / or at least one of polyol copolymers such as polyvinyl alcohol, polyvinyl acetate, polyethylene glycol, and polypropylene glycol, polyvinylpyrrolidone, polyacrylic acid, and alkyl polyacrylate derivatives.

[0036] This skin-adhering concealing sheet is characterized in that the permeable layer or water-retaining layer is at least one selected from nonwoven fabric, paper, filter paper, cotton, gauze, mesh fabric, porous material, gel, and sponge.

[0037] This skin-adhering opacity sheet may have an elastomer protective layer laminated on at least one side of the elastomer layer, either on the side facing the opacity dot pattern layer or on the opposite side, consisting of one or more elastomer components different from the coating elastomer component and the dot-supporting elastomer component. Here, the protective layer is a layer that protects the surface of the skin-adhering opacity sheet from external damage such as physical stimuli like friction and chemical stimuli like chemicals, thereby increasing its durability.

[0038] The present invention, which was made to solve the above-mentioned problems, is a method for manufacturing a skin-adhering opacity sheet, characterized in that an elastomer layer is prepared with an elastomer layer composition containing a coating elastomer component, and an opacity dot pattern layer is applied to at least one side of the elastomer layer with an opacity dot pattern layer composition containing at least one opacity powder having a refractive index of 1.5 to 3.0 and a dot-supporting elastomer component, in which multiple dots are arranged in a regular repeating pattern vertically and horizontally.

[0039] In the manufacturing method of this skin-adhering opacity sheet, it is preferable that the plurality of dots are attached in such a way that the dots are arranged at the center and vertices of a honeycomb-shaped regular hexagon, forming a repeating pattern.

[0040] The method for manufacturing this skin-adhering opacity sheet involves the elastomer layer having a bending stiffness index of E×h 3 (where E represents the elastic modulus of the elastomer layer and h represents the thickness of the elastomer layer) The value of 8.0 × 10 3 It is preferable to adjust the value to nNm or less, preferably 300nNm or less, and more preferably 20nNm or less.

[0041] The method for manufacturing this skin-adhering opacity sheet may involve preparing the elastomer layer by at least one of the following film formation methods: screen printing, spin coating, roll coating, bar coating, electrospray, electrospinning, spray coating, immersion coating, force spinning, and gravure coating.

[0042] The method for manufacturing this skin-adhering opacity sheet may involve preparing the opacity dot pattern layer by at least one printing method selected from screen printing, inkjet printing, laser printing, gravure offset printing, gravure printing, flexographic printing, and microcontact printing.

[0043] The method for producing this skin-adhering opacity sheet may involve preparing the solid content concentration of the opacity powder and the dot-supporting elastomer component to be 10 to 83% by mass, relative to the mass of the opacity dot pattern layer composition. [Effects of the Invention]

[0044] According to the skin-adhering concealing sheet of the present invention, at least one side of the elastomer layer has a concealing dot pattern layer containing concealing powder, that is, a layer in which parts that reflect or diffuse light with the powder to conceal unevenness of skin color are evenly arranged in a dot pattern, thereby concealing skin blemishes, birthmarks, post-inflammatory hyperpigmentation, senile lentigines, seborrheic keratosis, solar lentigines, moles, melasma, petal-shaped lentigines, ephelides, acquired dermal melanocytosis, or nevi, vitiligo, erythema, purpura, acne, acne scars, pimples, rosacea, hemangiomas, blood vessels Makeup can be applied to conceal, or alter or conceal, at least one of the following types of damage or damage marks, or skin irregularities, selected from lesions, poor circulation, wounds, scars, surgical scars, treatment marks, sunburn, sunburn marks, uneven skin tone, dullness, pigment abnormalities, hyperpigmentation, discoloration, dark circles around the eyes, sagging, wrinkles, and tattoos, or to allow for the application of pictures or decorations with desired colors and shapes, as if on a canvas, thereby visually concealing, altering, or concealing skin features.

[0045] Furthermore, the opaque dot pattern layer of the skin-adhering opaque sheet reflects or diffuses light at the dot areas and, if necessary, is colored to resemble skin tone, thus closely matching the user's skin color and preventing any visual incongruity with the skin-adhering opaque sheet.

[0046] This skin-adhering concealing sheet is E×h 3 The bending stiffness index expressed by the formula (where E is the elastic modulus of the elastomer layer's components and h is the thickness of the elastomer layer) is 8.0 × 10 3Because it has an elastomer layer that exhibits flexibility of nNm or less, preferably 300nNm or less, and more preferably 20nNm or less, it conforms to and penetrates and covers unevenness in the texture of 20 to 500 μm, creating a natural, seamless appearance of unevenness. Moreover, because this skin-adhering concealing sheet can be made to closely resemble skin in both color and elasticity, it appears to blend in with the skin visually, and the boundary between its edges and the skin becomes less noticeable, making it closer to the texture of skin and further reducing any sense of discomfort or difference from the skin.

[0047] Despite the low adhesion of the dotted areas, this skin-adhering concealing sheet adheres to the skin only through the non-dotted areas thanks to the sufficient adhesion inherent in the skin-safe elastomer layer. Therefore, it does not require any adhesives or glues that can cause skin damage such as irritation or rashes, making it easy and safe to use even for people with dry, sensitive, or diseased skin.

[0048] This skin-adhering concealing sheet has low bending rigidity in the elastomer layer, and its excellent conformability and adhesion to the skin, especially its texture, improves adhesion to the skin during application. The rubbery elasticity of the elastomer layer allows it to follow the stretching and contracting of the skin, preventing it from easily peeling off and providing a comfortable feel against the skin. Moreover, since the elastomer layer does not contain any adhesive or glue, it adheres to the skin through its tackiness, van der Waals forces, hydrogen bonds, and anchoring effect. This allows for easy removal when washing with soapy water, as moisture can penetrate between the sheet and the skin, thus achieving both seemingly contradictory effects.

[0049] According to the method for manufacturing a skin-adhering opacity sheet of the present invention, a skin-adhering opacity sheet with desired excellent opacity and adhesion can be easily manufactured with a simple configuration consisting of a skin-adhering elastomer layer and an opacity dot pattern layer of a desired dot shape, using only general-purpose equipment, and with an efficient and high yield. [Brief explanation of the drawing]

[0050] [Figure 1]This is a partially cutaway bottom view of a skin-adhering opacity sheet to which the present invention is applied, and an enlarged schematic cross-sectional view taken in the direction of arrow AA, showing the state of use. [Figure 2] This is an enlarged schematic cross-sectional view showing the usage state of another skin-adhering opacity sheet to which the present invention is applied. [Figure 3] This is a schematic perspective view showing the usage state of another skin-adhering opacity sheet to which the present invention is applied. [Figure 4] This is an enlarged schematic cross-sectional view showing the usage state of a skin-adhering opacity sheet to which the present invention, which uses a soluble sacrificial layer and a support layer, is applied. [Figure 5] The present invention relates to a skin-adhering opacity sheet to which the present invention is applied. (a) A graph showing the correlation between opacity effect evaluation and dot shape evaluation, (b) A photograph showing an example of the results of microscopic observation evaluation under each condition, and (c) A photograph showing an example of the results of appearance evaluation over time. [Figure 6] Regarding the skin-adhering opacity sheet to which the present invention is applied, (a) and (b) are photographs showing the results of microscopic observation evaluation under each condition. [Figure 7] The present invention relates to a skin-adhering opacity sheet to which the present invention is applied. (a) is a chart showing an example of the results of analyzing a luminance histogram, and (b) and (c) are graphs showing the results of analyzing the relationship between the Δ average luminance value, which is the difference in average luminance values ​​obtained from luminance histograms under various conditions, and the opacity evaluation value using a stain plate. [Figure 8] The present invention relates to a skin-adhering opacity sheet to which the present invention is applied, and the following figures are shown: (a) a graph showing the correlation between dot diameter and solid content concentration and the corrected tensile load (N / m) / strain value; (b) a graph showing the correlation between dot diameter, dot occupancy rate and solid content concentration and the corrected tensile load (N / m) / strain value; and (c) a figure showing the dot diameter and solid content concentration and a micrograph of the dots in that case. [Modes for carrying out the invention]

[0051] Hereinafter, embodiments of the skin-adhesive concealment sheet of the present invention and another embodiment of the skin-adhesive concealment sheet laminate having a soluble sacrificial layer and a support layer will be described in detail with reference to the drawings, but the scope of the present invention is not limited to these embodiments.

[0052] An embodiment of the usage state in which the skin-adhesive concealment sheet 10 is implemented is shown in FIG. 1. FIG. 1(a) is a partially cutaway plan view of the skin-adhesive concealment sheet 10, and FIG. 1(b) is an enlarged view of a part in the usage state of FIG. 1(c), which is a schematic cross-sectional view taken along the line A-A of FIG. 1(a).

[0053] As shown in FIG. 1, a preferred example of this skin-adhesive concealment sheet 10 is that on one skin side of an elastomer layer 11 containing an elastomer component for a film and having a thickness T 11 of 50 nm to 200 μm, there is provided a concealment dot pattern layer 12 composed of dots containing one or more types of concealment powders having a refractive index of 1.5 to 3.0 and an elastomer component for dot support. It has neither an adhesive layer nor an adhesive agent layer, but exhibits an adhesive force to the skin due to the inherent adhesiveness of the elastomer layer 11.

[0054] The concealment dot pattern layer 12 of this skin-adhesive concealment sheet 10 is formed by arranging a plurality of dots 12a1 to 12a4... in a regular repeating pattern with the dots arranged neatly vertically and horizontally, that is, a plurality of adjacent dots 12a1 to 12a4... are equidistant both vertically and horizontally (see FIG. 1(a)), or equidistant in the adjacent horizontal direction and equidistant in the vertical diagonal direction (not shown), or equidistant in the adjacent vertical direction and equidistant in the horizontal diagonal direction (not shown). Specifically, for example, it is arranged in a regular repeating pattern in which the dots are arranged at the centers and vertices of a honeycomb-shaped regular hexagon. Alternatively, it is formed by arranging a plurality of dots 12a1 to 12a4... with the pattern of the dot size and interval changed. As a result, dot portions 12a1 to 12a4... and non-dot portions 12b are formed.

[0055] This opaque dot pattern layer 12 contains an opaque powder, such as white powder, so that at least one side of the elastomer layer randomly contains dots 12a1 to 12a4... that conceal the skin by reflecting or diffusing light, and non-dot areas 12b where the skin should be easily visible due to light transmission in the gaps between the dots.

[0056] While the texture depth D is 20-500 μm, the elastomer layer 11 has a thickness T 11 The film is 50 nm to 200 μm thick and is thin to extremely thin, and is transparent to semi-transparent if it does not contain colorants. Nevertheless, this skin-adhering concealing sheet 10 can be used to apply makeup intended to conceal skin blemishes, birthmarks, post-inflammatory hyperpigmentation, senile lentigines, seborrheic keratosis, solar lentigines, moles, melasma, petal-shaped lentigines, ephelides, acquired dermal melanocytosis, or nevi such as spots, vitiligo, erythema, purpura, acne, acne scars, pimples, rosacea, hemangiomas, vascular lesions, poor circulation, wounds, scars, surgical scars, treatment scars, sunburn, sunburn marks, uneven skin tone, dullness, pigment abnormalities, hyperpigmentation, discoloration, dark circles around the eyes, sagging, wrinkles, and tattoos, or to alter or conceal skin features, by its concealing dot pattern layer 12.

[0057] Furthermore, the skin-adhering concealing sheet 10 is colored with pigments in at least one of the concealing dot pattern layer 12 and the elastomer layer 11 to match the skin tone, and the concealing powder in the dots 12a1 to 12a4... reflects or diffuses light to conceal damage, damage marks, and skin irregularities. As a result, the sheet closely matches the user's skin tone, and the boundary between the skin-adhering concealing sheet 10 and the skin becomes less noticeable. Consequently, the skin-adhering concealing sheet 10 does not cause any visual discomfort when applied to the skin.

[0058] The reason why the opaque dot pattern layer 12 conceals damage, scars, and skin irregularities with opaque powder is presumed to be as follows: In areas with multiple dots 12a1 to 12a4, light is reflected or scattered by primary particles of the opaque powder contained in considerable quantities, as well as secondary particles formed by their aggregation, preventing light from passing through and obscuring the skin color beneath the dots. By arranging dots with low light transmittance, the dotted and non-dotted areas are mixed on the retina (visual mixing), and it is presumed that the area where the skin-adhering opaque sheet with multiple dots 12a1 to 12a4 is applied is visually perceived as being the same quality as the surrounding skin.

[0059] The shape and particle size of the concealing powder are not particularly limited in order to achieve a concealing effect on the skin. For example, the primary particles of the concealing powder can be of any shape, such as spherical, rod-shaped, needle-shaped, spindle-shaped, or plate-shaped, and the secondary particles can be in the form of clumps. Furthermore, the average particle size of the opacity powder should be 30 to 5000 nm, preferably 80 to 250 nm. If the average particle size is less than 30 nm, the visible light transmittance will increase, requiring a larger amount of powder to achieve the opacity effect. On the other hand, if the average particle size exceeds 5000 nm, the texture of the opacity dot pattern layer 12 may become rough.

[0060] The opacifying powder in the opacifying dot pattern layer 12 may be at least one of the white powders selected from titanium dioxide (TiO2), zinc oxide (ZnO), and aluminum oxide (Al2O3), which are commonly used in cosmetics and exhibit a white color with high visible light reflectivity.

[0061] Examples of titanium dioxide include titanium dioxide mainly composed of rutile, and titanium dioxide consisting only of rutile with low catalytic activity, or surface-treated titanium dioxide. More specifically, examples of titanium dioxide include titanium dioxide that has been surface-treated with aluminum hydroxide or silica to suppress catalytic activity, and further surface-treated with hydrogen dimethicone, dimethicone, alkylsilanes such as triethoxycaprylylsilane, lauroyl lysine, fatty acids such as stearic acid, sodium alginate, hydrated silica, etc., with a purity of 80% by mass or higher, which is commonly used in cosmetics and the like, and is a pigment-grade titanium dioxide with high opacity, preferably with an average primary particle size of 30 to 5000 nm, more preferably 80 to 250 nm, or aggregates of secondary particles formed by aggregation by relatively weak forces such as van der Waals forces. More specifically, examples include MPY-1133S, MPY-1133M, MPY-700BS, MTY-500SAM, MP-1133EX, MP-1133AQ, MP-1133WP (all manufactured by Teika Co., Ltd.), ST-700, ST-705SA, ST-750, ST461, ST410 (all manufactured by Titanium Industry Co., Ltd.), STR-60, STR-100, MKR-1, GT-10W2, DIS-OP-10A, DIS-TL-10A, DIF-AW4 (all manufactured by Sakai Chemical Industry Co., Ltd.). In order to improve dispersibility in the medium when preparing the composition for the dot pattern layer, the surfaces of these materials may be coated or hydrophilized with alkylsilane, dimethicone or hydrodimethicone, lauroyl lysine, fatty acids such as stearic acid, sodium alginate, hydrated silica, etc. Specifically, zinc oxide has a lower refractive index compared to titanium dioxide, resulting in weaker UV scattering compared to titanium dioxide. However, in addition to its UV shielding effect depending on the particle size, it has a good feel due to its hexagonal plate shape, and exhibits near-infrared shielding effects. Other examples include absorbing UV light and converting it to visible light, resulting in green emission. More specifically, examples include XZ-100F, XZ-300F, XZ-1000F, FINEX-30, LumateG (all manufactured by Sakai Chemical Industry Co., Ltd.), and SOLAVEIL MZP3 (manufactured by Croda International Plc). Aluminum oxide is specifically a translucent white, plate-like powder with good color development, excellent luster, and a very smooth surface. Coating the surface of powders or colorants with aluminum oxide can impart a pearlescent luster of various colors, making it suitable for incorporation as a mixed ingredient. More specifically, MSP-AK06 (Nikko Rica Co., Ltd.) is an example. These powders appear white because the opacity of the powder surface has irregularities, resulting in high light reflectivity and light scattering effects.

[0062] The opaque dot pattern layer 12 is formed by supporting an opaque dot pattern layer composition, which includes a dot-supporting elastomer component, an opaque powder, and optionally a diluent such as a volatile medium and / or a non-volatile diluent, on an elastomer layer 11, and then allowing it to spontaneously vaporize and harden, heat vaporize and harden, or vaporize under reduced pressure using a volatile medium or a combination of a volatile medium and a non-volatile diluent.

[0063] To achieve sufficient concealment on the skin, the composition for the concealing dot pattern layer should contain 10 to 83% by mass of solids consisting of concealing powder and dot-supporting elastomer components, relative to the total mass. If this content is less than 10%, there will be too little concealing powder in the concealing dot pattern layer 12, leading to aggregate dispersion rather than uniform dispersion, which can easily cause uneven color and shading when the powder is supported on the elastomer layer 11 by printing or other means. On the other hand, if this content exceeds 83% by mass, and especially exceeds 90% by mass, the concealing powder may leak from the dots 12a1 to 12a4, causing linear or dendritic crystals to precipitate, which can hinder adhesion to the skin 20 in the non-dot areas 12b, reduce the elastomer properties and make it hard, or increase the bending rigidity and reduce its ability to conform to the skin.

[0064] When preparing a composition for a dot pattern layer containing an opacity powder and a dot-supporting elastomer component, the solid content concentration of the opacity powder and the dot-supporting elastomer component shall be 10 to 83% by mass, preferably 50 to 70% by mass, in this composition. If this composition consists of an opacity powder (e.g., titanium dioxide), a dot-supporting elastomer component (e.g., silicone), and a diluent (e.g., cyclic siloxane), the solid content concentration is given by the following formula: Solid content concentration (mass%) = {(mass of opacity powder + mass of dot-supporting elastomer component) / (mass of opacity powder + mass of dot-supporting elastomer component + mass of diluent)} × 100 It is calculated as follows. If the solid content concentration is less than 10% by mass, the result is the same as when the opacity powder content falls below the aforementioned range. On the other hand, if the solid content concentration exceeds 83% by mass, the result is the same as when the opacity powder content exceeds the aforementioned range.

[0065] In this opaque dot pattern layer 12, the mass ratio of opaque powder to the dot-supporting elastomer component is 2:8 to 8:2, preferably 5:5 to 7:3. If the mass ratio of opaque powder is less than 2:8, the concealing effect on the skin will be reduced, and damage, scars, and skin irregularities will be visible, or the concealment will be insufficient. On the other hand, if the mass ratio of opaque powder exceeds 8:2, clogging may occur during screen printing, for example, or the opaque powder may leak from the opaque dot pattern layer 12 and precipitate on the non-dot portions 12b on the elastomer layer.

[0066] In order to ensure sufficient adhesion between the opaque dot pattern layer 12 and the elastomer layer 11, it is necessary to select and use a dot-supporting elastomer component that has excellent dispersibility and affinity for the opaque powder, as well as excellent affinity for the elastomer layer 11. Such dot-supporting elastomer components are selected from at least one of the following: polyurethane, silicone, styrene-butadiene-styrene copolymer, styrene-farnesene block copolymer, styrene-isoprene copolymer, polyisoprene copolymer, polylactic acid-polyethylene glycol copolymer, polycaprolactone, chloroprene, nitrile rubber, latex, styrene-based elastomer, polylactic acid elastomer, polyvinyl alcohol, polyvinyl acetate, polyol, olefin-based elastomer, polyvinyl chloride, polyester-based elastomer, nylon-based elastomer, naturally derived rubber, naturally derived polymer components, such as plant-derived polyisoprene, plant-derived polylactic acid complex, biomass-derived styrene-based elastomer, seaweed-derived alginate rubber, and polymers having an interpenetrating polymer network (IPN) structure, which is a gel composed of polyvinyl alcohol and polymethacrylic acid, and it is preferable that they are of the same type as the elastomer component for the film of the elastomer layer 11.

[0067] Specifically, as elastomer components for dot support, examples include polyisocyanate components such as diphenylmethane diisocyanate, tolylene diisocyanate, hexamethylene diisocyanate, and isophorone diisocyanate, as well as polyether polyols such as polypropylene glycol and polytetramethylene glycol, polyester polyols, polycaprolactone polyols, and polycarbonate diols, which are products of condensation polymerization reactions. These are formed from a soft segment portion made of long-chain polyols or diisocyanates and a hard segment portion made of crystalline urethane composed of short-chain glycols and diisocyanates. The hard segment portions form hydrogen bonds with each other, creating physical crosslinking points and thus exhibiting elastomer properties. More specifically, examples include UW-1013D-C1, UW-1527DF, UW-3039E (manufactured by Tosoh Corporation), Nipporan 963, Nipporan 980R, Nipporan 2304, Nipporan 3114, Nipporan 4748, MC 115, HC-210, HC-219, Miractran XN-2001, Miractran P22MBRNAT, Covestro (formerly manufactured by Bayer MaterialScience), Baymedix AP501, Baymedix CD102, Baymedix CD104, and Baymedix FP520 (manufactured by Covestro; Baymedix is ​​a registered trademark). As a silicone, it has a siloxane bond as its main backbone, and exhibits elastomeric properties by having a crosslinking structure in part of a siloxane chain, which consists of two-way branched (D units) with two organic substituents such as methyl groups, phenyl groups, or other organic substituents, with three-way branched (T units) with one organic substituent or four-way branched (Q units) without any organic substituents. More specifically, (SYLGARD TM 184 Silicone Elastomer Kit, SYLGARD TM 527 A&B Silicone Dielectric Gel, DOWSIL TM TC-2035 Adhesive A / B Kit, DOWSIL TMExamples include 3140 RTV Coating (manufactured by Dow Toray Industries, Inc.), KE-1031-A / B, KE-1051J-A / B, KE-1316 (manufactured by Shin-Etsu Chemical Co., Ltd.), SILPURAN 6000 / 05, SILPURAN 6000 / 10, SILPURAN 6000 / 20, SILPURAN 6000 / 30, SILPURAN 6000 / 40, SILPURAN 6000 / 50, SILPURAN 6600 / 40, and SILPURAN 6610 / 40 (manufactured by Asahi Kasei Wacker Silicone Co., Ltd.; SILPURAN is a registered trademark). Examples of styrene-butadiene-styrene copolymers include copolymer reaction products of styrene monomer components and butadiene monomer components, as well as their vulcanized products. These are also known as styrene-butadiene rubber (SBR) and exhibit elastomeric properties due to their structure in which hard styrene blocks and flexible butadiene blocks are arranged alternately. More specifically, polystyrene-block-polybutadiene-block-polystyrene (manufactured by Sigma-Aldrich) is an example. Examples of polycaprolactone include ring-opened polymers of ε-caprolactone, or ring-opened polymerized modified ε-caprolactone obtained by ring-opening polymerization with polyols such as polytetramethylene ether glycol, polyethylene glycol, polyvinyl alcohol, polylactic acid, polyglycolic acid, and polydioxanone, as well as polyurethanes, polymethacrylate esters, and 2-hydroxy methacrylate esters. The ester bonds are repeatedly arranged in a linear chain, which facilitates sliding between polymer chains and exhibits elastomeric properties. More specifically, polycaprolactone (manufactured by Sigma-Aldrich) can be mentioned. Examples of naturally derived polymer components include natural rubber or its vulcanized form, in which long-chain molecules such as cis-structured polyisoprene are crosslinked by sulfur to form a network structure, thereby exhibiting elastomeric properties. More specifically, latex liquid natural rubber (manufactured by Kenis Corporation) is an example.

[0068] Such opaque dot pattern layers include an opaque powder, a dot-supporting elastomer component, and a diluent such as a volatile or non-volatile medium, such as a cyclic siloxane, more specifically cyclopentasiloxane (manufactured by Dow Chemical Japan Ltd.; DEWSIL SH245 Fluid, manufactured by Shin-Etsu Silicone Co., Ltd.; KF-995), volatile dimethicone (manufactured by Shin-Etsu Silicone Co., Ltd.; KF-96-1.5CS, KF-96-2CS), methyl trimethicone (manufactured by Shin-Etsu Silicone Co., Ltd.; TMF-1.5), and volatile ethyl methicone (manufactured by Shin-Etsu Silicone Co., Ltd.; KF-4422).

[0069] If the opaque dot pattern layer 12 contains only opaque powder, which is a white powder, as a colorant to indicate hue, the skin-adhering opaque sheet 10 will have too much white reflection, the white will be too emphasized, and it will stand out because it will be too different from the skin tone.

[0070] Therefore, in order for this skin-adhering opacity sheet 10 to be as close as possible to the skin tone, the opacity dot pattern layer 12 and / or elastomer layer 11 are made of black colorants commonly used in cosmetics such as lipstick, primer and foundation, specifically SunCROMA Black Iron Oxide (manufactured by Sun Chemical Corporation; SunCROMA is a registered trademark), UNIPURE BLACK LC988, UNIPURE BLACK LC989 (manufactured by Sensient Technologies Japan Co., Ltd.), SA-Black BL-100P (100%), SA / NAI-B-10 MiBrid Color Powder, ALT-BHP-10, KTP-09B (manufactured by Shin-Etsu Chemical Co., Ltd.), and red colorants specifically UNIPURE RED LC381, UNIPURE RED LC388 (manufactured by Sensient Technologies Japan Co., Ltd.), SunCROMA Red Iron Oxide (Sun Chemical The product shall contain, as appropriate, the following yellow colorants: SA-Red R-516PS (100%), SA / NAI-R-10 MiBrid Color Powder, ALT-RHP-10 (manufactured by Miyoshi Chemical Co., Ltd.), KTP-09R (manufactured by Shin-Etsu Chemical Co., Ltd.), and / or as yellow colorants, UNIPURE YELLOW LC181, UNIPURE YELLOW LC188 (manufactured by Sensient Technologies Japan Co., Ltd.), SunCROMA Yellow Iron Oxide (manufactured by Sun Chemical Corporation; SunCROMA is a registered trademark), SA-Yellow LL-100P (100%), SA / NAI-Y-10 MiBrid Color Powder, ALT-YHP-10 (manufactured by Miyoshi Chemical Co., Ltd.), and KTP-09Y (manufactured by Shin-Etsu Chemical Co., Ltd.).

[0071] However, this alone is insufficient to accommodate the subtle skin tones of individuals and the differences in skin tone based on race, tanning, etc., and cannot be individually adjusted. Therefore, the opaque dot pattern layer 12 may contain, in addition to, an opaque powder such as white powder, a black colorant, a red colorant, a yellow colorant, and / or other colorants, or in their place, pigments and / or dyes.

[0072] Examples of pigments and / or dyes include oxides, hydroxides, or sulfides of at least one of the following metals: iron, titanium, zinc, and chromium; or silica or aluminum coatings thereof; chromates; carbonyl iron powder; carbon black; vegetable charcoal; ultramarine; conyrochrome; manganese violet; lakes such as aluminum lake; mica; titanium oxide-coated mica; talc; glitter; polyamide powders such as nylon powder (nylon is a registered trademark); polymethyl methacrylate powder; azo pigments; phthalocyanine pigments; xanthene pigments; indigo pigments; natural pigments (carotenoid pigments, anthocyanin pigments, saffron pigments, safflower yellow pigment, betalain pigments, chlorophyll pigments, cochineal pigments, red yeast rice pigments, spirulina pigments, Dunaliella carotene pigments, betalain pigments, chlorophyll pigments, etc.); and at least one color modifier selected from single or hybrid compounds consisting of at least one of these. More specifically, iron oxides are also known as iron oxides and include red iron oxide (mainly composed of iron(III) oxide (Fe2O3)), yellow iron oxide (mainly composed of iron(III) oxide (FeO(OH)) and ferric(III) hydroxide (Fe2(OH)6)), and black iron oxide (mainly composed of iron(III) oxide (Fe3O4)).

[0073] The elastomer layer and / or opaque dot pattern layer that come into contact with the skin may contain light-diffusing particles selected from silica particles, mica particles, nylon particles, polymethyl methacrylate particles, borosilicate glass particles, and encapsulated particles containing polymethyl methacrylate resin (PMMA) particles or silica particles with light-scattering effects, each having a different refractive index from the elastomer component for film formation and the elastomer component for dot support.

[0074] If the opaque dot pattern layer 12 or the elastomer layer 11 contains black, red, and / or yellow colorants, or contains pigments and / or dyes together with or in place of them, the skin-adhering opaque sheet 10 will approach the skin tone. The opaque dot pattern layer 12, which would otherwise appear whitish due to the white opaque powder, will be made to look more like skin tone by containing black, red, or yellow powders such as iron oxide, or other colored pigments and / or dyes, which are blackish or reddish or yellowish. Furthermore, even if the opaque dot pattern layer 12 contains pigments and / or dyes, it can be adjusted to a natural reddish or yellowish skin tone.

[0075] In the opaque dot pattern layer 12, the mass ratio of pigments and / or dyes containing black, red, or yellow powders or other colors to the opaque powder is preferably 1:5 or less.

[0076] Thus, the use of black, red, or yellow powders and other pigments and / or dyes to more closely match skin tones is possible because they absorb some of the wavelengths of the three primary colors (red, blue, and yellow) in the white reflected or diffused light from the opaque white powder. As a result, the reflected light in the red to yellow wavelength range is emphasized, allowing for adjustment to a reddish or yellowish, natural skin tone.

[0077] The opaque dot pattern layer 12 and the elastomer layer 11 may contain components that have a soft-focus effect, such as dimethicone, talc, mica, aluminum oxide, barium sulfate, silica, polymethylsilsesquioxane, (dimethicone / vinyl dimethicone) crosspolymer, acrylic acid polymer powder, methacrylic acid polymer powder, and silicone powder.

[0078] The opacity of the dot pattern layer 12 is improved because it contains more opacity powder than the elastomer layer 11.

[0079] The dots 12a1 to 12a4 of the opaque dot pattern layer 12 are, for example, such that the diameter R of the dots is 50 to 5000 μm (preferably 50 μm to 3000 μm, more preferably 50 μm to 500 μm), and / or the dot occupancy rate, which is the ratio of the area of ​​the dots 12a1 to 12a4 to the area of ​​at least one surface of the elastomer layer 11 to which the opaque dot pattern layer 12 is attached, is 25 to 75%, preferably 50 to 70%.

[0080] If the diameter R of these dots 12a1 to 12a4 is less than 50 μm, the area of ​​diffuse reflection due to the opacity powder becomes smaller, resulting in insufficient diffuse reflection and thus low opacity. On the other hand, if the diameter R exceeds 5000 μm, the gaps become too large, making visual mixing difficult, and the dots may be perceived as a so-called polka-dot pattern, resulting in low opacity. Furthermore, if the dot occupancy rate is less than 25%, the gaps between the dots 12a1 to 12a4 become too large, resulting in poor opacity. On the other hand, if it exceeds 75%, when the dots 12a1 to 12a4 are applied by printing, they may bleed and partially connect, resulting in a state similar to solid color, which reduces the flexibility of the elastomer layer 11. Also, if the opacity dot pattern layer 12 is applied to the surface side of the elastomer layer 11, the gaps between the dots 12a1 to 12a4 become too narrow, preventing the elastomer layer 11 from exhibiting its intended adhesion.

[0081] Therefore, in order to ensure sufficient opacity, it is necessary to set the diameter R of the dots 12a1 to 12a4 and the dot occupancy rate within an appropriate range. To adjust the skin tone to be close to that of skin, it is necessary to appropriately set the type, particle size, shape, content, and content ratio of opacifying powders, black, yellow, or red powders, black, yellow or red pigments, and / or black, yellow or red dyes.

[0082] Thickness T of this opaque dot pattern layer 12 12The thickness of the dot pattern layer is 50 nm to 50 μm, preferably 50 nm to 20 μm. Since the product is attached to the skin by the elastomer layer 11, the opaque dot pattern layer 12 may or may not have adhesive properties, but it is preferable that it has adhesive properties similar to those of the elastomer layer 11. Since the elastomer layer 11 can provide sufficient adhesion, if the opaque dot pattern layer 12 is made thicker than the elastomer layer 11 to provide greater opacity, its flexibility may be somewhat reduced and it may lose its adhesive properties.

[0083] When this opaque dot pattern layer 12 is attached to the skin side of the elastomer layer 11 as shown in Figure 1, in order to maintain appropriate spacing between the dots 12a1 to 12a4 and ensure adhesion while exhibiting sufficient opacity to the skin, it is necessary to adjust the diameter R of the dots 12a1 to 12a4 and the dot occupancy rate to an appropriate range. Specifically, by setting the diameter R of the dots 12a1 to 12a4 to 500 μm and the dot occupancy rate to 50 to 70%, it is possible to provide a high level of natural opacity to the skin while also providing adhesion to the skin texture.

[0084] The elastomer layer 11 supports the opaque dot pattern layer 12 while also providing adhesion to the skin-adhering opaque sheet.

[0085] Because this elastomer layer 11 mainly contains a film-forming elastomer component, it exhibits the inherent flexibility and conformability of an elastomer layer even without an adhesive layer or adhesive layer, and without containing any adhesive components other than the film-forming elastomer component. Therefore, it can adhere to the texture of the skin surface. Considering that the film-forming elastomer component will adhere directly to the skin surface, it is necessary to select one that has excellent biocompatibility and ease of handling.

[0086] The film-forming elastomer components constituting the elastomer layer 11 are similar to those listed for the dot-supporting elastomer components. It is preferable that the film-forming elastomer components and the dot-supporting elastomer components be of the same type because they integrate easily, but they may be different.

[0087] This elastomer layer 11 has sufficient adhesion due to the inclusion of a film-forming elastomer component. Even if the opaque dot pattern layer 12 is attached to the skin 20 side of this elastomer layer 11, it remains exposed in the non-dot 12b portion, allowing it to adhere to the skin surface due to the high conformability of the film-forming elastomer component. Furthermore, the elastomer layer 11 does not contain any adhesive or bonding layer that could cause skin irritation or rashes, and does not contain any adhesion components other than the film-forming elastomer component. Therefore, it can reduce the burden on people with dry, sensitive, or diseased skin that is sensitive to adhesives and bonding agents.

[0088] The elastomer layer 11 has a bending stiffness index of E × h as a physical property. 3 The bending stiffness index of the elastomer layer 11 is given by the formula E × h (where E is the elastic modulus of the elastomer layer 11 and h is the thickness of the elastomer layer 11), and the smaller this value, the more flexible it becomes. 3 The value is 8.0 × 10 3 When the thickness is in the range of nNm or less, preferably 300nNm or less, and more preferably 20nNm or less, the elastomer layer 11 adheres to the skin due to its inherent conformability that allows it to penetrate into the irregularities of the skin's texture. 3 The value is 8.0 × 10 3 When the strength exceeds nNm, it becomes impossible to adhere to the skin, or the strength becomes insufficient to maintain adhesion to the skin. The bending stiffness index E×h 3 The value is 8.0 × 10 3 It is preferable that it is nNm or less.

[0089] This skin-adhering concealing sheet 10 has the advantages of being adhesive and flexible because the elastomer layer 11 contains elastomer components, making it easy to conform to the unevenness of the skin's texture, and being able to respond to the stretching and contracting of the skin due to the rubber elasticity unique to elastomers. Therefore, when it comes into contact with the skin, it adheres while penetrating the unevenness of the skin's texture, and the thickness T of the concealing dot pattern layer 12 12 Regardless of whether the opacity dot pattern layer 12 is attached to the skin side 20 of the skin-adhering opacity sheet 10 or to the opposite side, it conforms to and adheres to the uneven shape of the skin's texture while deforming accordingly.

[0090] Moreover, this skin-adhering concealing sheet 10 adheres to the unevenness of the skin surface because the elastomer layer 11 has flexibility due to the film-forming elastomer component, and because it has the rubber elasticity characteristic of elastomers, it can respond flexibly to the stretching and contracting of the skin in response to muscle contraction and joint flexion and extension without peeling or tearing.

[0091] Furthermore, the skin-adhering opacity sheet 10 adheres tightly to the skin surface 20 through adhesive forces based on van der Waals forces, hydrogen bonds, and anchoring effect, and does not peel off the skin 20 with light touching or rubbing during daily life. However, when washed by lightly rubbing with soap, body wash, cleansing foam, or facial wash while lathering with water, moisture enters between the elastomer layer 11 and the skin surface 20, breaking the van der Waals forces, hydrogen bonds, etc. between the elastomer layer 11 and the skin surface, and the elastomer layer 11 and the opacity dot pattern layer 12 together can be easily peeled off the skin surface 20.

[0092] In terms of opacity, it is preferable that the Δaverage luminance value, which is the difference in average luminance in the luminance histogram when attached to white paper and black paper, be 125 or less, or that the light transmittance at a wavelength of 700 nm measured by an ultraviolet-visible spectrophotometer be 70% or less, or that the stain model can be concealed when colored on a substrate with five stain models in order of lightness and darkness (such as the DS-50 / 20 stain plate in order of lightness and darkness manufactured by Viewlux Co., Ltd., or an equivalent product thereof), where the L*, a*, and b* values ​​are 69.2, 10.5, and 19.5 respectively, and the difference in L* value ΔL* from the substrate is -1.3 or less, the difference in a* value Δa* is 0.9 or more, and the difference in b* value Δb* is 1.0 or more, i.e., the opacity evaluation value is 0.5 or more. A concealment rating of 0.5 or higher using the blemish plate corresponds to a light transmittance of 70% or less at 700nm. If the concealment rating using the blemish plate is less than 0.5, the concealment is too low, and damage, scars, and skin irregularities will be visible.

[0093] The skin-adhering concealing sheet 10 may contain topical drug components in the elastomer layer 11 and / or the concealing dot pattern layer 12 that come into contact with the skin, such as anti-inflammatory components, wound healing components, antioxidant components, antibacterial components, antibiotics, skin beautifying components, skin whitening components, cell activating components, blood circulation promoting components, moisturizing components, and / or peptides, fermented products, plant extracts, or animal extracts having any of these functions.Specifically, synthetic corticosteroids and / or steroid compounds such as benzoyl oxide, hydrocortisone, clobetasol, mometasone, betamethasone, dexamethasone and their fatty acid derivatives, adapalene, retinoic acid, retinol, retinol derivatives, dipotassium glycyrrhizate, glycyrrhetinic acid, azelaic acid, α-hydroxy acid, salicylic acid, salicylic acid esters, 4-methoxysalicylic acid, hydroquinone, arbutin, kojic acid, lucinol, thiamidol, resorcinol, resorcinol derivatives, magnolignan, linoleic acid, ellagic acid, cysteamino acid salts, sodium bicarbonate, camphor, menthol, quercetin, caffeine, pantothenyl ethyl ether, nicotinic acid, nicotinamide, nicotinic acid tocopherol, tranexamic acid, tranexamic acid Cell-activating and blood-circulation-promoting components such as methylamide, allantoin, and amino acids; growth factors such as EGF, FGF, IGF, and VEGF; peptides with structures similar to growth factors; antimicrobial peptides; anti-inflammatory, skin-beautifying, whitening, and moisturizing components such as urea, glycerin, erythritol, xylitol, trehalose, hyaluronic acid, and heparin; vitamins and antioxidant components such as vitamin C and vitamin C derivatives, vitamin E and vitamin E derivatives, and vitamin B6; antimicrobial components such as hinokitiol, benzalkonium chloride, phenoxyisopropyl alcohol, sulfur, and antibiotics such as aminoglycosides, macrolides, tetracyclines, lincomycins, quinolones, new quinolones, and penicillins; sebum-inhibiting powders such as zinc chloride; and Centella asiatica (scientific name: Centella). Examples of cosmetic extracts include Centella asiatica extract (CICA), licorice extract, ginkgo biloba extract, eucalyptus extract, angelica root extract, swertia japonica extract, houttuynia cordata extract, and yeast extract, all of which possess anti-inflammatory, antioxidant, antibacterial, cell-activating, blood circulation-promoting, and moisturizing properties. These include fermented products, herbal medicines, and / or plant extracts.

[0094] The elastomer layer 11 and / or opaque dot pattern layer 12 containing such topical drug components may be laminated with a topical drug component release control layer, thereby providing sustained release or sustained release. The topical drug component release control layer contains, as release control components, a hydrophobic layer such as vegetable oil, mineral oil, lipid film, polyvinyl acetate, or PEG / PPG random copolymer that acts as a release barrier for hydrophilic topical drugs, a hydrophilic layer such as glycerin, polyvinyl alcohol, polyacrylic acid, or PEG / PPG random copolymer that acts as a reservoir for hydrophilic drugs or a release barrier for lipophilic topical drugs, or a hydrophobic layer such as vegetable oil, mineral oil, polyvinyl acetate, or PEG / PPG random copolymer that enhances the distribution of lipophilic topical drugs.

[0095] The skin-adhering concealing sheet 10 can conceal at least one of the following types of skin blemishes, birthmarks, post-inflammatory hyperpigmentation, age spots, seborrheic keratosis, solar lentigines, moles, melasma, petal-shaped lentigines, freckles, acquired dermal melanocytosis, or nevi such as spots, vitiligo, erythema, purpura, acne, acne scars, pimples, rosacea, hemangiomas, vascular lesions, poor circulation, wounds, scars, surgical scars, treatment marks, sunburn, sunburn marks, uneven skin tone, dullness, pigment abnormalities, hyperpigmentation, discoloration, dark circles around the eyes, sagging, wrinkles, and tattoos, as well as skin imperfections, and can be used for cosmetic, beauty, and medical purposes.

[0096] As shown in Figure 1(a), the skin-adhering opacity sheet 10 may have an opacity dot pattern layer 12 attached to the skin 20 side of the elastomer layer 11, and may also have a release substrate layer 16 that covers the elastomer layer 11 together with the opacity dot pattern layer 12 if necessary. Furthermore, as shown in Figure 2(a), the skin-adhering opacity sheet 10 may have an opacity dot pattern layer 12 on the side of the elastomer layer 11 opposite to the side facing the skin 20, and may also have a release substrate layer 16 covering the side of the elastomer layer 11 facing the skin 20 if necessary. Alternatively, as shown in Figure (b), the skin-adhering opacity sheet 10 may have opacity dot pattern layers 12a and 12a' on the skin-facing side of the elastomer layer 11 and the opposite side, and may have a release substrate layer 16 that covers the opacity dot pattern layer 12a on the skin-facing side of the elastomer layer 11 and / or the opacity dot pattern layer 12a on the opposite side as needed. In that case, the same opacity effect can be achieved even if the opacity dot pattern layer 12 is thinner than in the case of only one side as shown in Figure (a). Furthermore, although not shown in the figure, referring to Figure (a), the skin-adhering opacity sheet 10 may have an opacity dot pattern layer 12 attached to the skin 20 side of the elastomer layer 11, and a release substrate layer 16 covering the opposite side.

[0097] Furthermore, as shown in Figures 1 and 2, the skin-adhering opacity sheet 10 may have a release substrate layer 16 directly attached to the elastomer layer 11, or attached to the elastomer layer 11 via an opacity dot pattern layer 12, and may adhere to the skin and be stably attached by peeling it off. In this skin-adhering opacity sheet 10, the elastomer layer 11 is E×h 3 The bending stiffness index value expressed by the formula is 8.0 × 10 3 Due to its high conformability, which is less than nNm, preferably less than 300 nNm, and more preferably less than 20 nNm, it can adhere to the skin without either an adhesive layer or a bonding agent layer. Therefore, it can be directly attached to the skin simply by peeling it off a substrate such as release paper 16 that is weakly attached by the adhesive force of the elastomer layer 11.

[0098] Such E×h 3 The value of the bending stiffness index, expressed by the formula, can be adjusted by decreasing the value of the elastic modulus E of the elastomer layer or by reducing the thickness h of the elastomer layer. Furthermore, the skin-adhering opacity sheet 10 may be configured such that, as shown in Figures 1 and 2, a releaseable substrate layer 16 is directly attached to the elastomer layer 11 as a carrier for maintaining its shape, or, although not shown, is attached to the elastomer layer 11 via an opacity dot pattern layer 12, and the skin-adhering opacity sheet 10 can be attached to the skin by applying the skin-adhering opacity sheet 10 together with the releaseable substrate layer 16 to the skin and then peeling off the releaseable substrate layer 16.

[0099] Such a releaseable substrate layer 16 can be at least one of the following: nonwoven fabric, paper, oil paper, polymer coated paper, polymer sheet, filter paper, cotton, gauze, mesh fabric (for example, polyester mesh, polyamide mesh, or polytetrafluoroethylene mesh), porous material (for example, porous resin, porous cellulose, porous glass, or porous ceramics), gel (for example, silica aerogel or chitosan aerogel), or sponge, and is weakly attached by the elastomer layer 11.

[0100] Such a skin-adhering opacity sheet 10 is manufactured as follows, with reference to the example in Figure 1. As a first step, the skin-adhering opacity sheet 10 is prepared by forming an elastomer layer composition containing a coating elastomer component on a release substrate layer 16 using at least one of the film formation methods selected from screen printing, spin coating, roll coating, bar coating, electrospray, electrospinning, spray coating, immersion coating, force spinning, and gravure coating to prepare an elastomer layer 11 with a thickness of 50 nm to 200 μm, or by forming an elastomer layer composition using the aforementioned film formation method such as screen printing without using the release substrate layer 16 to prepare an elastomer layer 11 with a thickness of 50 nm to 200 μm.

[0101] As a second step, an opaque dot pattern layer 12 is prepared by applying a dot pattern layer composition containing at least one opaque powder having a refractive index of 1.5 to 3.0 and a dot-supporting elastomer component to the elastomer layer 11 using at least one printing method selected from screen printing, inkjet printing, laser printing, gravure offset printing, gravure printing, flexographic printing, and microcontact printing, such that multiple dots are arranged vertically and horizontally in a regular repeating pattern, for example, with dots placed at the center and vertices of a regular hexagon.

[0102] This process produces a skin-adhering concealing sheet 10.

[0103] Such a skin-adhering concealing sheet 10 is used as follows, with reference to the example in Figure 1. The skin-adhering concealing sheet 10 is applied by its adhesive properties to areas of skin with uneven skin tone, such as blemishes, birthmarks, post-inflammatory hyperpigmentation, age spots, seborrheic keratosis, solar lentigines, moles, melasma, petal-shaped lentigines, freckles, acquired dermal melanocytosis, or nevi, vitiligo, erythema, purpura, acne, acne scars, pimples, rosacea, hemangiomas, vascular lesions, poor circulation, wounds, scars, surgical scars, treatment marks, sunburn, sunburn marks, uneven skin tone, dullness, pigment abnormalities, hyperpigmentation, discoloration, dark circles around the eyes, sagging, wrinkles, and tattoos, with the concealing dot pattern layer 12 facing the skin 20, or with the elastomer layer 11 facing the skin 20. If a peelable substrate layer 16 is present, it is peeled off. As a result, the damaged area, the area of ​​damage, or the area of ​​skin unevenness is concealed by the skin-adhering concealing sheet 10, and the edges of the skin-adhering concealing sheet 10 are the same color as the surrounding skin around the damaged area, the area of ​​damage, or the area of ​​skin unevenness, thereby preventing any visual incongruity.

[0104] On the other hand, another embodiment of the skin-adhering opacity sheet 10 itself may be as shown in the schematic perspective view in Figure 3, which exaggerates the thickness, in which an elastomer layer 11 having an opacity dot pattern layer 12 on the skin side 20 or the opposite side is laminated on a release substrate layer 16, and a release guide layer 18 having a large hole 18a in the center and a cut 18b at the exact half-body boundary is laminated on the surface of the elastomer layer 11 opposite the skin side 20, surrounding the periphery. This skin-adhering opacity sheet 10 consists of an elastomer layer 11 and an opacity dot pattern layer 12, similar to the above, but is manufactured in the same manner as above, except that the lamination order is different and the release guide layer 18 is attached last. When using this skin-adhering concealing sheet 10, the peelable substrate layer 16 is peeled off by pinching the tab 16a of the peelable substrate layer 16, the skin-adhering concealing sheet 10 is applied to the skin 20, and finally the peelable guide layer 18 is peeled off half at a time to conceal the damaged area, the scars of damage, or the unevenness of the skin 21.

[0105] Furthermore, another embodiment of the skin-adhering opacity sheet 10 may be used as a skin-adhering opacity sheet laminate 15 having a soluble sacrificial layer / support layer 14, as shown in Figure 4(a). Figure 4(a) is a schematic cross-sectional view of the skin-adhering opacity sheet laminate 15. In the skin-adhering opacity sheet laminate 15, a permeable layer 17 is attached to a soluble sacrificial layer / support layer 14 laminated on the opposite side of the skin-side 20 of the skin-adhering opacity sheet 10, which has an opacity dot pattern layer 12 attached to one side of the elastomer layer 11 on either the skin-side 20 or the opposite side. A water-retaining layer may be used instead of the permeable layer 17.

[0106] The skin-adhering opacity sheet laminate 15 can be immersed in water, alcohol, polyhydric alcohol, polyol, a mixture containing any of these, lotion, or lotion-type cosmetic / beauty serum, allowing the water, alcohol, polyhydric alcohol, polyol, or any of these mixtures, lotion, or lotion-type cosmetic / beauty serum to permeate the permeable layer 17, causing the soluble sacrificial layer / support layer 14 to dissolve or dissolve with the water or the mixture containing alcohol, polyhydric alcohol, polyol, or any of these mixtures, lotion, or lotion-type cosmetic / beauty serum, thus enabling the skin-adhering opacity sheet 10 to be attached to the skin 20 without the need for an adhesive layer or bonding layer.

[0107] The soluble sacrificial layer / support layer 14 can bond the skin-adhering opacity sheet 10 and the permeable layer 17 and is formed of a soluble material that dissolves in water, alcohol, polyhydric alcohol, polyol, a mixture containing any of these, lotion, or lotion-type cosmetic / serum. Specifically, the soluble material can be at least one of the following: polysaccharides selected from starch, alginic acid, xanthan gum, guar gum, cellulose, hyaluronic acid, and any derivative thereof; polyvinyl alcohol, polyvinyl acetate, copolymers of polyols such as polyethylene glycol and polypropylene glycol, polyvinylpyrrolidone, polyacrylic acid, and alkyl polyacrylate derivatives.

[0108] The permeable layer 17 is not particularly limited as long as it is a material that can permeate water, alcohol, polyhydric alcohol, polyol, a mixture containing any of these, lotion, or lotion-type cosmetic / beauty serum. Specifically, it can be at least one of the following: nonwoven fabric, paper, filter paper, cotton, gauze, mesh fabric, for example polyester mesh, polyamide mesh or polytetrafluoroethylene mesh, porous material, for example porous resin, porous cellulose, porous glass or porous ceramics, gel, for example silica aerogel or chitosan aerogel, and sponge.

[0109] A skin-adhering opacity sheet laminate 15 containing such a skin-adhering opacity sheet 10 is manufactured as follows, referring to the example in Figure 4(a).

[0110] In the case of a skin-adhering opacity sheet laminate 15 containing a skin-adhering opacity sheet 10, as a first step, a material for a soluble sacrificial layer / support layer is applied to the permeable layer 17 in a so-called solid coating manner by at least one printing method selected from screen printing, spin coating, roll coating, bar coating, electrospray, electrospinning, spray coating, immersion coating, force spinning, and gravure coating, thereby preparing a soluble sacrificial layer / support layer 14. As a second step, an elastomer layer composition containing a coating elastomer component is formed on the soluble sacrificial layer / support layer 14 by at least one of the following film formation methods: screen printing, spin coating, roll coating, bar coating, electrospray, electrospinning, spray coating, immersion coating, force spinning, and gravure coating, to prepare an elastomer layer 11 with a thickness of 50 nm to 200 μm.

[0111] As a third step, an opaque dot pattern layer 12 is prepared by applying a dot pattern layer composition containing at least one opaque powder with a refractive index of 1.5 to 3.0 and a dot-supporting elastomer component to the elastomer layer 11 using at least one printing method selected from screen printing, inkjet printing, laser printing, gravure offset printing, gravure printing, flexographic printing, and microcontact printing, such that multiple dots are arranged vertically and horizontally in a regular repeating pattern, for example, with dots placed at the center and vertices of a regular hexagon. The elastomer layer 11 and the opaque dot pattern layer 12 form a skin-adhering opaque sheet 10.

[0112] This results in the production of a skin-adhering opacity sheet laminate 15 containing a skin-adhering opacity sheet 10.

[0113] A skin-adhering opacity sheet laminate 15 containing such a skin-adhering opacity sheet 10 is used as follows, referring to the example in Figure 4(a). First, the elastomer layer 11, along with the opacity dot pattern layer 12 of the skin-adhering opacity sheet laminate 15, is applied to the damaged area, the scar from the injury, or the area of ​​uneven skin due to its adhesive properties, thereby applying the skin-adhering opacity sheet laminate 15 containing the skin-adhering opacity sheet 10. Next, when the permeable layer 17 of the skin-adhering opacity sheet laminate 15 is wetted with water, alcohol, polyhydric alcohol, polyol, a mixture containing any of these, lotion, or lotion-type cosmetic / serum, the water, alcohol, polyhydric alcohol, polyol, a mixture containing any of these, lotion, or lotion-type cosmetic / serum that permeates through the permeable layer 17 dissolves the soluble sacrificial layer / support layer 14, allowing the permeable layer 17 to be peeled off. Once the permeable layer 17 is peeled off, the skin-adhering opacity sheet 10 adheres to the skin. If necessary, the soluble material of the soluble sacrificial layer / support layer 14 remaining on the skin-adhering opacity sheet 10 is gently washed away.

[0114] As shown in Figure 4(b), the skin-adhering opacity sheet 15, which includes such a skin-adhering opacity sheet 10, has an opacity dot pattern layer 12 attached to one side of the elastomer layer 11 facing the skin 20 and / or the opposite side. A soluble sacrificial layer / support layer 14 is laminated on the opposite side of the one side facing the skin 20, and a permeable layer 17 is attached over the soluble sacrificial layer / support layer 14. This skin-adhering opacity sheet laminate 15 can be manufactured and used in the same manner as shown in Figure (a), except that the order is changed.

[0115] Figure 1(c) shows a representative schematic representation of how the skin-adhering opacity sheets 10, derived from the skin-adhering opacity sheet laminate 15 shown in Figures 1-3, or Figure 4, are attached to the skin surface. As shown in Figure 1(c), the elastomer layer 11 and the opacity dot pattern layer 12 of the skin-adhering opacity sheet 10 deform to conform to the uneven shape of the skin's texture, and the opacity dot pattern layer 12 deforms to conform to the skin's contact surface and adheres to it. In addition, the exposed surface of the elastomer layer 11 from the opacity dot pattern layer also deforms to conform to the skin's contact surface and adheres to it. [Examples]

[0116] The following describes embodiments of the present invention in detail, but the scope of the present invention is not limited to these embodiments.

[0117] (Preparation Example 1: Common general method for manufacturing skin-adhering opacity sheet 10 [when the elastomer component for the coating is silicone]) A skin-adhering opacity sheet 10 without a peelable substrate layer 16 was fabricated as shown in Figure 1, in the following manner.

[0118] (Preparation Example 1(1): Preparation of Silicone Composition for Dot Pattern Layer) A predetermined amount of Silpuran® 6000 / 10 A material (manufactured by Asahi Kasei Wacker Silicone Co., Ltd.), a silicone, was used as the elastomer component (binder component) for dot support. A predetermined amount of DOWSIL® SH245 Fluid (manufactured by Dow-Toray Industries, Ltd.), a cyclic siloxane, was added as a diluent. Furthermore, a predetermined amount of opacity-providing titanium dioxide (TiO2) powder was added, consisting of MPY-1133S (particle size 250 nm), MTY-700BS (particle size 80 nm), and MTY-500SAM (particle size 35 nm) (all manufactured by Teika Co., Ltd.), which were treated with hydrogen dimethicone or surface-treated with hydrodimethicone. The mixture was stirred in a vortex mixer and then stirred in a high-pressure homogenizer for 3 minutes. To the mixture, a predetermined amount of Silpuran® 6000 / 10 B material (manufactured by Asahi Kasei Wacker Silicone Co., Ltd.) was added, and the mixture was stirred in a vortex mixer until the titanium dioxide powder was dispersed. After further stirring in a high-pressure homogenizer for 3 minutes, the mixture was stirred and degassed in a rotation-revolution type mixer (manufactured by Shinky Co., Ltd.; Awatori Rentaro) to prepare a silicone composition for a dot pattern layer containing titanium dioxide.

[0119] Next, a silicone sheet was prepared as elastomer layer 11 by microgravure coating using a composition for an elastomer layer, in which polydimethylsiloxane-methylhydrosiloxane random copolymer (Gelest; 25-35% METHYLHYDROSILOXANE)-DIMETHYLSILOXANE COPOLYMER, TRIMETHYLSILOXANE TERMINATED) was mixed with a hexane solution of 7% vinyl methyl silicone (DJSilicone; 110-7) in a molar ratio of 1:1 to 110-7, and a platinum catalyst was added to crosslink the mixture. The resulting elastomer layer composition was then crosslinked and a silicone sheet with a film thickness of approximately 300 nm was fabricated.

[0120] (Preparation Example 1(2): Preparation of dot-supported and skin-adhering opacity sheet 10) Next, a silicone composition for the dot pattern layer was placed on a screen plate, and an opaque dot pattern layer 12 with a dot diameter of 50-250 nm and a dot occupancy rate of 25-75% was applied to the elastomer layer 11. The layer was then heated at 110°C-130°C for 30 minutes to cure it, thereby producing a skin-adhering opaque sheet 10.

[0121] In addition, the mass ratio of titanium dioxide to silicone (material A + material B) in this silicone composition for the dot pattern layer was set to 2:8, 5:5, 7:3, and 8:2.

[0122] The solid content concentration in this silicone composition for the dot pattern layer was set to 10% or higher.

[0123] The detailed composition of this silicone composition for the dot pattern layer is shown in Table 1 below. The combinations of the diameter of the opaque dot pattern layer and the dot occupancy rate are shown in Table 2 below.

[0124] [Table 1]

[0125] [Table 2]

[0126] (Example 1, Comparative Example 1) Using the titanium dioxide:silicone composition of Composition Examples 1(a) to (m) with a solid content concentration of 10 to 83% as the silicone composition for the dot pattern layer, 127 test specimens of skin-adhering opacity sheets, Examples 1(1) to (127), were prepared by applying the present invention to create an opacity dot pattern layer with the combinations of dot diameter and dot occupancy shown in Table 3. Note that Comparative Example 2, a sheet test specimen not to which the present invention applies, was prepared in the same manner as Example 1(9), except that titanium dioxide covered the entire sheet surface rather than forming a dot pattern layer.

[0127] [Table 3-1]

[0128] [Table 3-2]

[0129] [Table 3-3]

[0130] [Table 3-4]

[0131] [Table 3-5]

[0132] (Performance evaluation test 1) The 127 test pieces of skin-adhering opacity sheets obtained in Example 1 (1) to 1(127), as well as the sheet test pieces of Comparative Examples 1 and 2, were evaluated for their opacity, dot shape by microscopic observation, discomfort on human skin, adhesion to human skin, and, for some of the sheet test pieces, appearance over time. The evaluation methods are as follows, and the evaluation results are shown in Tables 3-1 to 3-5.

[0133] (Performance evaluation 1-1: Concealment effect evaluation test, and Performance evaluation 1-2: Dot shape evaluation test) The concealment effect evaluation test was conducted as follows: 127 test pieces of the skin-adhering concealment sheet from Example 1 and the sheet test pieces from Comparative Examples 1 and 2 were attached to glass slides. These slides were then placed on stain plates (stain plate DS-50 / 20 (manufactured by Viewlux Co., Ltd.; equivalent products may be used)) colored with five levels of stain models in descending order of lightness. The evaluation was based on a 5-point scale, with a score of "1" indicating that the lightest stain (level 1) was concealed, and a score of "5" indicating that the darkest stain (level 5) was concealed.

[0134] Here, the stain plate is a substrate with L*, a*, and b* values ​​of 69.2, 10.5, and 19.5 respectively, on which five stain models are colored in order of decreasing intensity. The stain models are colored such that, relative to the substrate's L*, a*, and b* values, the ΔL*, Δa*, and Δb* values ​​are -2.7, 1.9, and 2.1 for the lightest stain (1st stain), -4.6, 3.4, and 3.2 for the 2nd stain, -6.1, 4.6, and 4.0 for the 3rd stain, -11.9, 7.1, and 2.4 for the 4th stain, and -14.2, 6.4, and 0.1 for the darkest stain (5th stain). A stain concealment evaluation value of "0.5" means that stain models with ΔL*, Δa*, and Δb* values ​​of -1.3, 0.9, and 1.0 relative to the substrate's L*, a*, and b* values ​​can be concealed; "1" means that stain models with values ​​of -2.7, 1.9, and 2.1 can be concealed; "1.5" means that stain models with values ​​of -3.6, 2.6, and 2.6 can be concealed; and "2.5" means that stain models with values ​​of -5.4, 4.0, and 3.6 can be concealed. Alternatively, it is possible to use commercially available stain plates DS-50 / 20 (manufactured by Viewlux Co., Ltd.), which have five stain models colored in order of lightest to darkest intensity. In addition, as an evaluation test of the concealing effect, the light transmittance at 700 nm was measured using a UV-Vis spectrophotometer on slide glass to which 127 test pieces of the skin-adhering concealing sheet of Example 1 and the sheet test pieces of Comparative Examples 1 and 2 were attached. On the other hand, the dot shape evaluation test was conducted as follows: The dot shape of 127 test pieces of the skin-adhesion opacity sheet from Example 1 and the sheet test pieces from Comparative Example 1 and Comparative Example 2 was observed using a microscope and evaluated on a 10-point scale according to the criteria in Table 4.

[0135] [Table 4]

[0136] Figure 5(a) visually shows an example of the results of the concealment effect evaluation test and the dot shape evaluation test. As is clear from Figure 5(a), the results of the concealment effect evaluation and the dot shape evaluation were contradictory. In particular, it is inferred that test pieces with a concealment effect of 0.5 or higher using a stain plate, i.e., a Δ-average brightness value of 125 or less, or a light transmittance of 700 nm at a wavelength of 700 nm of 70% or less, and a dot shape evaluation value of 9 to 10, are suitable for the product.

[0137] (Performance evaluation 1-3: Microscope observation evaluation test) The microscopic observation evaluation test was conducted as follows: 127 test pieces of the skin-adhering opacity sheet from Example 1 and the sheet test piece from Comparative Example 2 were observed under a transmission-type optical microscope at 10x magnification. An example of the results is shown in Figure 5(b). Note that since light was transmitted from below these test pieces, dots that blocked the light appear as black areas. As is clear from Figure 5(b), among other things, the 29 test pieces of skin-adhering opacity sheets, including Examples 1(41) and 1(42), which have an opacity effect of 0.5 or higher using a stain plate, or a light transmittance of 700 nm or less, or a Δ average brightness value of 125 or less, and a dot shape evaluation value of 9 to 10, are presumed to be suitable as products.

[0138] (Performance evaluation 1-4: Appearance evaluation test during use) The visual evaluation test during use is as follows: Test specimens of the six skin-adhering opacity sheets from Example 1 were attached to the inner side of a human forearm, and observed visually immediately after application, 11 hours later, 17 hours later (the morning after going to sleep), and 26 hours later (the next day). The results are shown in Figure 5(c). As is clear from Figure 5(c), in all six test specimens of the skin-adhering concealing sheets in Example 1, the skin-adhering concealing sheets remained stably attached to human skin for extended periods of time.

[0139] (Results of Performance Evaluation 1) Performance evaluation 1 showed that the results of the stain concealment evaluation and the dot shape evaluation were contradictory. However, a stain concealment evaluation of 0.5 to 1.0 or higher was sufficient, indicating excellent concealment. More preferably, a skin-adhering concealing sheet 10 having a concealing dot pattern layer 12 with a titanium dioxide particle size of 250 nm, a titanium dioxide:silicone ratio of 2:8 or higher, a dot occupancy rate of 25% to 75%, and a dot diameter of 50 to 250 μm, resulted in a stain concealment evaluation of 0.5 or higher, or a light transmittance of 70% or less at a wavelength of 700 nm, or a Δ average brightness value of 125 or less, and a dot shape evaluation value of 9 to 10, indicating sufficient concealment. Furthermore, this concealment effect was found to be equivalent to or better than commercially available products. Compared to commercially available products, it was found that there was no discomfort or damage when peeling it off the skin because it was not attached to the skin via an adhesive layer and / or bonding layer, and there was no discomfort in appearance, touch, or texture.

[0140] (Performance evaluation 2: Microscope observation evaluation test) In the same manner as the microscopic observation evaluation tests for performance evaluation 1-3, 127 test pieces of skin-adhesion opacity sheets from Examples 1(1) to 1(127) were observed under a transmission-type optical microscope at 10x magnification. As shown in the results of the microscopic observation evaluation tests for performance evaluation 1-3 and this performance evaluation 2 (see, for example, Figure 5(b)), the opacity improved when the dot occupancy rate was increased to less than 75%, but as shown in Figure 6(a), when the dot occupancy rate was 75% or higher, the dots tended to connect to each other, resulting in a decrease in adhesion to human skin. As is clear from Figures 6(a) and (b), sufficient opacity was achieved in all cases, but the dot shape was particularly good at a solid content concentration of 70% and a dot occupancy rate of 70%. Therefore, it was found that a composition of titanium dioxide:silicone = 7:3 with a solid content concentration of 70% forms an opacity dot pattern layer, and when the dot occupancy rate is 70% and the dot diameter is 150-250 nm, the results of the dot shape evaluation test are relatively high, and the results of the opacity effect evaluation test are also relatively high, making it a more preferable composition.

[0141] (Example 2) (Performance evaluation 4: ΔAverage brightness value) (Performance Evaluation 4-1: Method for Calculating Δ-Average Brightness Value for Optivity Evaluation) A composition containing titanium dioxide with a particle size of 250 nm was used, with a compositional ratio of titanium dioxide:silicone = 2:8 to 8:2 and a solid content concentration of 10 to 83%, as shown in Composition Preparation Examples 1(a) to (m). A dot pattern layer with an opaque dot diameter of 50 to 250 μm and a dot occupancy rate of 25 to 75% was printed onto an elastomer layer on a glass slide using a screen printing plate to obtain glass slide test specimens (Examples 1(1) to (127)). These glass slide test specimens were placed on black paper and white paper, and MNL photometry was performed using a Panasonic HDC-TM350 camera (manufactured by Panasonic Corporation) under the following conditions: WB: fluorescent lamp mode, SHTR: 1 / 30, IRIS: OPEN 6dB, and Pixel: 3984 × 2656. For both the black paper background and the white paper background photographic images of the film-forming area, the images were cropped to have the same number of pixels. Using the image processing software ImageJ (public domain), the luminance histograms were analyzed (see Figure 7(a)), and the difference in average luminance between the black paper background and the white paper background (Δaverage luminance value) was calculated from the average luminance value of both luminance histograms.

[0142] (Performance evaluation 4-2: Relationship between quantitative evaluation of opacity using Δ-average brightness value and opacity evaluation value using stain plate) Figure 7(b) shows the correlation between the Δ-average brightness value calculated using (Performance Evaluation 4: Δ-average brightness value) and the opacity evaluation value using the stain plate, for each type of screen printing plate.

[0143] (Performance evaluation 4-3: Quantitative evaluation of opacity based on Δ-average luminance value for each type of composition) Figure 7(c) shows the correlation between the Δ-average luminance value and the opacity evaluation value using the stain plate, as shown in Figure 7(b), and the correlation between each type of composition.

[0144] (Performance evaluation 4-4: Concealment effect evaluation test) Performance evaluation 1-1: Conducted in the same manner as the concealment effect evaluation test.

[0145] (Results of Performance Evaluation 4) As is clear from Figures 7(b) and (c), the Δ-average luminance value, a quantitative evaluation method, showed a high negative correlation (correlation coefficient: -0.961) with the opacity evaluation value using a stain plate, a simpler evaluation method. Among those with equivalent opacity evaluation values, opacity was particularly superior when the titanium dioxide:silicone ratio was high at 7:3.

[0146] (Example 3) Ten test specimens of skin-adhering opacity sheets were prepared using the silicone composition for the dot pattern layer, with a titanium dioxide:silicone ratio of 7:3 and a solid content concentration of 50% or 83% as in Example 1(f) or 1(i). These specimens had opacity dot patterns as shown in Table 5 below, with dot diameters of 50 μm or 150 μm and a dot occupancy rate of 50%. As a control, test specimens consisting only of an elastomer layer without the opacity dot pattern layer were used.

[0147] [Table 5]

[0148] (Performance evaluation test 5-1: Hardness evaluation (tensile test)) For the 10 skin-adhering opacity sheets of Examples 3(1) to 3(4), the tensile load and strain were measured using a tensile testing machine (Shimadzu Corporation; EZ-S-5N). The tensile load was corrected by dividing it by the width of the specimen to obtain the corrected tensile load (N / m). Furthermore, the corrected tensile load (N / m) / strain was calculated as an indicator of the film's hardness. A smaller value for corrected tensile load (N / m) / strain indicates a more flexible film. The results are shown in Figure 8(a). As is clear from Figure 8(a), the 10 skin-adhering opacity sheets of Examples 3(1) to 3(4) exhibited a level of flexible film properties equivalent to that of the control specimen consisting only of an elastomer layer without the opacity dot pattern layer. For comparison, the film was compared with a solid coating of composition Example 1(f) or 1(i) as the silicone composition for the dot pattern layer. The results are shown in Figure 8(b). As is clear from Figure 8(b), the film coated with the silicone composition for the dot pattern layer containing titanium oxide over the entire surface of the elastomer layer became a hard film with a significantly increased corrected tensile load (N / m) / strain value, indicating high bending rigidity.

[0149] (Performance evaluation 5-2: Microscope observation evaluation test) In the same manner as the microscopic observation evaluation tests in Performance Evaluation 1-3, 10 test pieces of the skin-adhering opacity sheets from Examples 3(1) to 3(4) were observed under a transmission-type optical microscope at 10x magnification. The results are shown in Figure 8(c). As is clear from Figure 8(c), when the solid content concentration was increased to 83%, the dots partially connected, resulting in a slight increase in the corrected tensile load / strain value and a slight increase in hardness.

[0150] (Example 4) (Preparation Example 4: Common general method for producing skin-adhering opacity sheet 10 [when the elastomer component for the coating is polyurethane, styrene-butadiene-styrene copolymer, or polycaprolactone]) A skin-adhering opacity sheet 10 without a peelable substrate layer 16 was fabricated as shown in Figure 1, in the following manner.

[0151] (Preparation Example 4(1-1): Preparation of polyurethane composition for dot pattern layer [when the elastomer component for dot support is polyurethane]) To Baymedix CD102 (Covestro), a polyurethane dispersion, titanium dioxide powder MPY-1133AQ (Teika Co., Ltd.), with a particle size of 250 nm and hydrophilized with sodium alginate, was added in a mass ratio of titanium dioxide powder to polyurethane non-volatile content of 2:8. The mixture was stirred in a vortex mixer to prepare a polyurethane composition for a dot pattern layer containing titanium dioxide.

[0152] (Preparation Examples 4(1-2), 4(1-3): Preparation of styrene-butadiene-styrene copolymer composition or polycaprolactone composition for dot pattern layer [when the elastomer component for dot support is styrene-butadiene-styrene copolymer or polycaprolactone]) Styrene-butadiene-styrene copolymer (30 mol% styrene, molecular weight 140,000 or less, manufactured by Sigma-Aldrich) or polycaprolactone (molecular weight 80,000, manufactured by Sigma-Aldrich) was dissolved in toluene to a polymer concentration of 10%. To each of these, hydrogen dimethicone-treated or hydrodimethicone-surface-treated MPY-1133S (particle size 250 nm, manufactured by Teika Co., Ltd.) titanium dioxide powder was added in a mass ratio of titanium dioxide powder to polymer of 7:3, and the mixture was stirred with a vortex mixer to prepare a styrene-butadiene-styrene copolymer composition or a polycaprolactone composition for a dot pattern layer containing titanium dioxide.

[0153] (Preparation Example 4(2-1): Preparation of Elastomer Layer 11 [When the film-forming elastomer component is polyurethane]) Baymedix CD102 (manufactured by Covestro), a polyurethane dispersion, was used as a polyurethane elastomer layer composition and deposited as a film by bar coating printing to obtain a polyurethane sheet (elastomer layer 11) with a thickness of approximately 15.2 μm.

[0154] (Preparation Example 4(2-2): Preparation of Elastomer Layer 11 [When the film-forming elastomer component is a styrene-butadiene-styrene copolymer]) A styrene-butadiene-styrene copolymer (30 mol% styrene, molecular weight 140,000 or less, manufactured by Sigma-Aldrich) was dissolved in toluene to a polymer concentration of 5% to prepare a composition for a styrene-butadiene-styrene copolymer elastomer layer. This was deposited using a microgravure coating method to prepare a styrene-butadiene-styrene copolymer sheet (elastomer layer 11) with a film thickness of approximately 500 nm. (Preparation Example 4(2-3): Preparation of Elastomer Layer 11 [When the film-forming elastomer component is polycaprolactone]) Polycaprolactone (molecular weight 80,000, manufactured by Sigma-Aldrich) was dissolved in toluene to a polymer concentration of 5% to prepare a composition for a polycaprolactone elastomer layer. This was then deposited by spin coating to prepare a polycaprolactone sheet (elastomer layer 11) with a thickness of approximately 500 nm.

[0155] (Example 4(3): Preparation of dot-supported and skin-adhering opacity sheet 10 [when the elastomer component for the coating is polyurethane, styrene-butadiene-styrene copolymer, or polycaprolactone]) A polyurethane composition for the dot pattern layer, a styrene-butadiene-styrene copolymer composition, or a polycaprolactone composition was placed on a screen printing plate, and an opaque dot pattern layer 12 with a dot diameter of 3000 μm and a dot occupancy rate of 50% was applied to an elastomer layer 11 prepared from the same type of elastomer layer composition. Then, the solvent was removed by natural drying to produce a skin-adhering opaque sheet 10.

[0156] (Performance evaluation 6: Stain concealment evaluation) Similar to the performance evaluation 1-1: Concealing Effect Evaluation Test described above, the concealing effect evaluation test was conducted as follows. A glass slide to which the skin-adhering concealing sheet 10 of Example 4 was attached was placed on a stain plate (stain plate DS-50 / 20 (manufactured by Viewlux Co., Ltd.) can also be used) colored with five levels of stain models in order of lightest to darkest, as in performance evaluation 1-1. The evaluation was given on a 5-point scale, with "1" given if the lightest stain (number 1) was concealed, and "5" given if the darkest stain (number 5) was concealed. If the sheet had concealing properties but the first stain was not completely concealed, it was evaluated as "0.5", and if the concealing effect was higher than "1" but the second stain was not completely concealed, it was evaluated as "1.5". The results are shown in Table 6.

[0157] [Table 6]

[0158] As shown in Examples 1-4, the skin-adhering concealing sheet excels in concealing damage, scars, and skin unevenness, as well as providing a natural feel and excellent adhesion to the skin. [Industrial applicability]

[0159] The present invention provides a skin-adhering concealing sheet, or a skin-adhering concealing sheet laminate having a soluble sacrificial layer and a support layer, which has no unnatural appearance, feel, or texture, and is effective against skin blemishes, birthmarks, post-inflammatory hyperpigmentation, senile lentigines, seborrheic keratosis, solar lentigines, moles, melasma, petal-shaped lentigines, freckles, acquired dermal melanocytosis, or nevi such as spots, white patches, erythema, purpura, acne, acne scars, pimples, rosacea, hemangiomas, vascular lesions, poor circulation, wounds, scars, surgical scars, treatment marks, sunburn, and sunburn. It can conceal at least one of the following types of damage or scars, or skin irregularities, selected from burn marks, uneven skin tone, dullness, pigment abnormalities, hyperpigmentation, discoloration, dark circles around the eyes, sagging, wrinkles, and tattoos, or it can be used to apply makeup intended to alter or conceal skin features, and can therefore be used in personal cosmetic and beauty treatments, makeup, esthetics, commercial beauty treatments such as cosmetic medicine and surgical procedures, and medical treatments such as post-operative care and concealment of damage or injured areas. The present invention provides a simple, straightforward, and inexpensive method for manufacturing skin-adhering opacity sheets, enabling the production of a wide range of high-quality products, from personal to commercial use. [Explanation of symbols]

[0160] 10 is a skin-adhering opacity sheet, 11 is an elastomer layer, 12 is an opacity dot pattern layer, 12a, 12a', 12a1~12a4... are dots, 12b is non-dot, 14 is a soluble sacrificial layer / support layer, 15 is a skin-adhering opacity sheet laminate, 16 is a peelable substrate layer, 17 is a transparent layer, 18 is a peelable guide layer, 18a is a large hole, 18b is a cut, 20 is skin, 21 is a damaged area, a scar, or an area of ​​skin heterogeneity, D is the depth of the unevenness of the skin texture, T 11 and T 12 is the thickness.

Claims

1. A skin-adhering opacity sheet characterized by having an opacity dot pattern layer on at least one side of an elastomer layer 50 nm to 200 μm thick containing a film-forming elastomer component, wherein multiple dots containing at least one opacity powder with a refractive index of 1.5 to 3.0 and a dot-supporting elastomer component are arranged in a regular repeating pattern vertically and horizontally, and having neither an adhesive layer nor a bonding layer.

2. The skin-adhering opacity sheet according to claim 1, characterized in that the plurality of dots are arranged in a repeating pattern in which the dots are positioned at the center and vertices of a honeycomb-shaped regular hexagon.

3. The skin-adhering opacity sheet according to claim 1, characterized in that the elastomer layer is attached to the skin on the side facing the opacity dot pattern layer or the side opposite thereto.

4. The skin-adhering opacity sheet according to claim 1, characterized in that the elastomer component for the film of the elastomer layer is selected from at least one of the following: polyurethane, silicone, styrene-butadiene-styrene copolymer, styrene-farnesene block copolymer, styrene-isoprene copolymer, polyisoprene copolymer, polylactic acid / polyethylene glycol copolymer, polycaprolactone, chloroprene, nitrile rubber, latex, styrene-based elastomer, polylactic acid elastomer, polyvinyl alcohol, polyvinyl acetate, polyol, olefin-based elastomer, polyvinyl chloride, polyester-based elastomer, nylon-based elastomer, naturally derived rubber, naturally derived polymer components, and polymers having an interpenetrating polymer network (IPN) structure, which is a gel composed of polyvinyl alcohol and polymethacrylic acid.

5. The elastomer layer has a bending stiffness index of E × h. ３ (where E represents the elastic modulus of the elastomer layer and h represents the thickness of the elastomer layer) The value of 8.0 × 10 ３ The skin-adhering concealing sheet according to claim 1, characterized in that it can adhere to the skin without the need for either the adhesive or the bonding agent, by having a thickness of nNm or less.

6. The skin-adhering opacity sheet according to claim 1, characterized in that the opacity powder is a white powder containing at least one selected from titanium dioxide, zinc oxide, aluminum oxide, calcium carbonate powder, barium sulfate powder, silica, mica, talc, sericite, and starch powder as constituent components, or a mixed powder of the white powder and at least one black, yellow, or red powder selected from iron oxide or its coating, carbonyl iron powder, pearl pigment consisting of iron oxide-coated aluminum oxide, carbon black, and vegetable charcoal.

7. The skin-adhering opaque sheet according to claim 1, characterized in that the opaque dot pattern layer comprises the opaque powder and a black colorant, a red colorant and / or a yellow colorant, and / or the elastomer layer comprises a white colorant, a black colorant, a red colorant and / or a yellow colorant.

8. The skin-adhering opaque sheet according to claim 1, characterized in that the opaque dot pattern layer and / or the elastomer layer contains one or more colorants selected from white, black, red, yellow, orange, green, blue, purple, gold, silver, and interference colorants.

9. The skin-adhering opacity sheet according to claim 1, characterized in that the opacity dot pattern layer and / or the elastomer layer contains a pigment and / or a dye.

10. The aforementioned pigments and / or dyes are oxides, hydroxides, or sulfides of at least one of the following metals: iron, titanium, zinc, chromium, and aluminum; or silica-coated or aluminum-coated materials, silica-coated aluminum pigments, iron oxide-coated aluminum pigments, gold nanoparticle-coated aluminum pigments; tin oxide; chromate; carbonyl iron powder; carbon black and / or vegetable charcoal; ultramarine; conyrochrome; manganese violet; lake; barium sulfate; calcium carbonate; synthetic fluorophlogopite; boron nitride; silica; kaolin; sericite; talc; inorganic material-coated talc; mica; synthetic fluorphlogopite; titanium oxide-coated mica; barium sulfate-coated mica; silica-coated mica; aluminum oxide-coated mica; zinc stearate; magnesium stearate; aluminum distearate; milli The skin-adhering opacity sheet according to claim 9, characterized in that it is at least one color adjuster selected from natural pigments, organic pigments such as zinc stearate, zinc laurate, glitter, polyamide powder, polymethyl methacrylate powder, nylon powder, silicone powder, polyacrylic acid ester, corn starch, silk powder, hemp cellulose powder, azo pigments, phthalocyanine pigments, quinoline pigments, xanthene pigments, indigo pigments, carotenoid pigments, anthocyanin pigments, saffron pigment, safflower yellow pigment, betalain pigment, chlorophyll pigment, cochineal pigment, red yeast rice pigment, spirulina pigment, Dunaliella carotene pigment, betalain pigment, chlorophyll pigment, and / or a hybrid of at least one of these powders and at least one of the pigments.

11. The skin-adhering opacity sheet according to claim 1, characterized in that the elastomer layer and / or the opacity dot pattern layer that come into contact with the skin contains light-diffusing particles selected from silica particles, mica particles, nylon particles, polymethyl methacrylate particles, polyacrylic acid particles, borosilicate glass particles, and encapsulated particles, which have different refractive indices from the elastomer component for coating and the elastomer component for supporting the dots.

12. The skin-adhering opacity sheet according to claim 1, characterized in that the mass ratio of the opacity powder to the dot-supporting elastomer component in the opacity dot pattern layer is 2:8 to 8:

2.

13. The skin-adhering opacity sheet according to claim 1, characterized in that when preparing a dot pattern composition containing the opacity powder and the dot-supporting elastomer component, the solid content concentration of the opacity powder and the dot-supporting elastomer component in the composition is 10 to 83% by mass.

14. The skin-adhering opaque sheet according to claim 1, characterized in that the diameter of the dots is 50 to 5000 μm, and / or the dot occupancy rate, which is the ratio of the area of ​​the dots to the area of ​​at least one surface of the elastomer layer to which the opaque dot pattern layer is attached, is 25 to 75%.

15. The skin-adhering opacity sheet according to claim 1, characterized in that the opacity powder has an average particle size of 30 to 5000 nm.

16. The skin-adhering opacity sheet according to claim 1, characterized in that the dot-supporting elastomer component is selected from at least one of the following: polyurethane, silicone, styrene-butadiene-styrene copolymer, styrene-farnesene block copolymer, styrene-isoprene copolymer, polyisoprene copolymer, polylactic acid / polyethylene glycol copolymer, polycaprolactone, chloroprene, nitrile rubber, latex, styrene-based elastomer, polylactic acid elastomer, polyvinyl alcohol, polyvinyl acetate, polyol, olefin-based elastomer, polyvinyl chloride, polyester-based elastomer, nylon-based elastomer, naturally derived rubber, naturally derived polymer components, and polymers having an interpenetrating polymer network (IPN) structure, which is a gel composed of polyvinyl alcohol and polymethacrylic acid.

17. The skin-adhering opacity sheet according to claim 1, characterized in that the dot-supporting elastomer component is of the same type as the film-forming elastomer component.

18. The skin-adhering opacity sheet according to claim 1 is characterized in that, as an opacity, the Δaverage luminance value, which is the difference in average luminance in the luminance histogram when attached to white paper and black paper, is 125 or less, or the light transmittance at a wavelength of 700 nm measured by an ultraviolet-visible spectrophotometer is 70% or less, or in a stain plate colored with five stages of stain models in order of lightest to darkest, it can conceal a stain model colored on a substrate plate where the L* value, a* value, and b* value are 69.2, 10.5, and 19.5 respectively, such that the difference in L* value ΔL* from the substrate is -1.3 or less, the difference in a* value Δa* is 0.9 or more, and the difference in b* value Δb* is 1.0 or more, i.e., the opacity evaluation value is 0.5 or more.

19. The elastomer layer has a bending stiffness index of E × h. ３ The value is 8.0 × 10 ３ The skin-adhering concealing sheet according to claim 1, characterized in that the density is nNm or less.

20. The skin-adhering opaque sheet according to claim 1, characterized in that it adheres to the skin without having either the adhesive layer or the bonding agent layer by peeling off the attached releaseable substrate layer on the side of the elastomer layer facing the opaque dot pattern layer or the side opposite thereto, or by dissolving or leaching out the sacrificial layer / support layer which is soluble in water, alcohol, polyhydric alcohol, polyol, a mixture containing any of these, lotion, or lotion-type cosmetic / beauty serum that is attached to it.

21. The skin-adhering concealing sheet according to claim 1 is characterized in that it is for the purpose of applying makeup to conceal at least one of the following types of damage or scars, or skin irregularities, selected from skin blemishes, birthmarks, post-inflammatory hyperpigmentation, age spots, seborrheic keratosis, solar lentigines, moles, melasma, petal-shaped lentigines, freckles, acquired dermal melanocytosis, or nevi, vitiligo, erythema, purpura, acne, acne scars, pimples, rosacea, hemangiomas, vascular lesions, poor circulation, wounds, scars, surgical scars, treatment scars, sunburn, sunburn marks, uneven skin tone, dullness, pigment abnormalities, hyperpigmentation, discoloration, dark circles around the eyes, sagging, wrinkles, and tattoos, or to alter or conceal skin characteristics.

22. The skin-adhering concealing sheet according to claim 1, characterized in that the elastomer layer and / or the concealing dot pattern layer that come into contact with the skin contain an external drug component.

23. The skin-adhering concealing sheet according to claim 22, characterized in that the topical drug components are fermented products, plant extracts or animal extracts containing anti-inflammatory components, wound healing components, antioxidant components, antibacterial components, antibiotics, skin beautifying components, skin whitening components, anti-wrinkle components, anti-acne components, cell activating components, blood circulation promoting components, moisturizing components, and / or components having any of these functions, and / or these topical drug components are supported in microcapsules coated with inclusion compounds, gel-like substances, porous powders, shell substances or membrane substances.

24. The skin-adhering concealing sheet according to claim 22, characterized in that the elastomer layer containing the topical drug component and / or the concealing dot pattern layer is covered with a topical drug component release control layer.

25. The skin-adhering opacity sheet according to claim 1, characterized in that a releaseable substrate layer is attached to the side of the elastomer layer facing the opacity dot pattern layer or the side opposite thereto, or a sacrificial layer or support layer soluble in water, alcohol, polyhydric alcohol, polyol, acetone, or a mixture containing any of these, lotion, or lotion-type cosmetic / beauty serum is attached, or a permeable layer or water-retaining layer is attached to the sacrificial layer or support layer soluble in water, alcohol, polyhydric alcohol, polyol, acetone, or a mixture containing any of these, lotion, or lotion-type cosmetic / beauty serum.

26. The skin-adhering opacity sheet according to claim 25, characterized in that the material of the sacrificial layer and support layer is a polysaccharide selected from starch, alginic acid, xanthan gum, guar gum, cellulose, hyaluronic acid, and any derivative thereof, and / or at least one selected from a copolymer of polyvinyl alcohol, polyvinyl acetate, polyol, polyvinylpyrrolidone, polyacrylic acid, and alkyl polyacrylate derivatives.

27. The skin-adhering concealing sheet according to claim 25, characterized in that the permeable layer or water-retaining layer is at least one selected from nonwoven fabric, paper, filter paper, cotton, gauze, mesh fabric, porous material, gel, and sponge.

28. The skin-adhering opacity sheet according to claim 1, characterized in that an elastomer protective layer consisting of one or more elastomer components different from the coating elastomer component and the dot-supporting elastomer component is laminated on at least one of the surfaces of the elastomer layer facing the opacity dot pattern layer or the opposite surface thereof.

29. A method for producing a skin-adhering opacity sheet according to claim 1, characterized in that an elastomer layer is prepared using an elastomer layer composition containing a coating elastomer component, and an opacity dot pattern layer is applied to at least one side of the elastomer layer using a dot pattern layer composition containing at least one opacity powder having a refractive index of 1.5 to 3.0 and a dot-supporting elastomer component, with a plurality of dots arranged in a regular repeating pattern vertically and horizontally.

30. The method for manufacturing a skin-adhering opacity sheet according to claim 29, characterized in that the plurality of dots are attached in such a way that the dots are arranged at the center and vertices of a honeycomb-shaped regular hexagon to form the repeating pattern.

31. The elastomer layer has a bending stiffness index of E × h. ３ (where E represents the elastic modulus of the elastomer layer and h represents the thickness of the elastomer layer) The value of 8.0 × 10 ３ A method for manufacturing a skin-adhering opacity sheet according to claim 29, characterized by adjusting the amount to be less than or equal to nNm.

32. The method for producing a skin-adhering opacity sheet according to claim 29, characterized in that the elastomer layer is prepared by at least one film formation method selected from screen printing, spin coating, roll coating, bar coating, electrospray, electrospinning, spray coating, immersion coating, force spinning, and gravure coating.

33. The method for producing a skin-adhering opacity sheet according to claim 29, characterized in that the opacity dot pattern layer is prepared by at least one printing method selected from screen printing, inkjet printing, laser printing, gravure offset printing, gravure printing, flexographic printing, and microcontact printing.

34. The method for producing a skin-adhering opaque sheet according to claim 29, characterized in that the solid content concentration of the opaque powder and the dot-supporting elastomer component is prepared to be 10 to 83% by mass with respect to the mass of the opaque dot pattern layer composition.

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