JP5826847B2 - Laminated structure for makeup - Google Patents

Description

  The present invention relates to a laminated structure for cosmetics, a method for producing the same, and a method for naturally hiding problem areas on the skin by attaching the laminated structure to the skin.

  There is a need to hide skin problems for aesthetic and medical purposes. To hide the problem area, it may be considered to place a bandage over the problem area, but the bandage is very visible and does not have the appearance that a user would normally want.

  Efforts have been made to come up with sticky substances that hide the problem areas of the skin, but it is not possible to hide the problem areas without attracting attention to the adhesive substance itself. For example, Patent Document 1 discloses an adhesive decal for skin. According to this patent, an adhesive decal for skin is a very thin, supple, extensible and uniform layer of water resistant material covering a water-soluble release layer held by porous decal paper A combination of a multicolored pattern printed by flexographic printing and a uniform deposit of adhesive that is designed to cover the pattern and hold it against the skin to protect it from being disturbed It is. The problems with the decals described above are that when used to hide the problem areas of the skin, the decals are very visible, the effect of hiding the decals is insufficient, and wrinkles are formed on the decals after repeated movements of the skin. There is a tendency.

  U.S. Pat. No. 6,057,077 discloses a decal assembly for decorating fingernails. According to this patent, a decal assembly is configured to be substantially over the surface of a carrier sheet and a fingernail or toe nail, and is present on the carrier sheet and is a thin non-self-supporting A series of five stepped generally oval decals that are basically composed of a flexible transparent film and are spaced apart from each other, and a central design integrally formed on the transparent film, Present in the back of the decal of the water activated, water-activated, configured to temporarily hold the decal on the carrier and attach to the nail by an adhesive that is released from the carrier and activated by water It includes attachment means and an aqueous, solvent-resistant, cellulose adhesive transparent layer present on each decal. The problem with this decal is that when used to hide the skin problem, the decal is very visible, the effect of hiding the decal is not sufficient, and there is a tendency to not be able to smoothly follow the deformation of the skin and therefore the skin The wrinkle is formed on the decal after the repeated movement.

  Patent document 3 is disclosing the laminated structure for covering the problem location of skin. According to this application, the laminated structure includes a substrate and an image forming layer. The laminate structure can follow the deformation of the skin to which it is attached, and the imaging layer allows the color of the laminate structure to blend into the skin color around the area to be attached. The problem with this laminated structure is that wrinkles are not easily formed by repeated movements of the skin, but do not provide an appearance that is sufficiently similar to the appearance of the skin. Specifically, the surface of the laminate structure is unnaturally glossy and thus attracts attention to the laminate structure when used on the skin.

US Pat. No. 5,942,065 US Pat. No. 3,898,357 PCT / JP2009 / 000373

  In view of the fact that none of the inventions and products available at the present time fully meet the requirement of naturally hiding skin problems from both aesthetic and medical perspectives, the inventors of the present invention Invented a laminated structure that addresses the above-mentioned problems, a method of manufacturing the laminated structure, and a method for naturally hiding the skin problem.

  Prior inventions and products have not been able to hide skin problems without attracting attention to the invention or the product itself. Although one invention (PCT / JP2009 / 000373) hides skin problems fairly naturally due to the color harmonizing with the skin and the reduction of wrinkles after repeated movements of the skin, It has not been successful in producing a dull appearance that is sufficiently similar to the skin. In other words, the object of the present invention is to hide the problem areas of the skin, without wrinkling even during repeated movement of the skin, to have a natural color that matches the color of the skin and to closely resemble the appearance of the skin. A laminate structure for cosmetics that provides a visible appearance, a method for making such a laminate structure, and a method for naturally concealing skin problems by attaching such a laminate structure to the skin It is to provide.

The present invention
A substrate made from a flexible material so that it can follow the deformation of the skin to which it is attached and attached to the skin;
An image-forming layer that supports the coloring material;
A hot melt adhesive layer present on the imaging layer on the side that supports the coloring material;
A water-soluble first adhesive layer present on the opposite side of the hot melt adhesive layer from the imaging layer;
A water-permeable protective layer present on the opposite side of the first adhesive layer from the hot-melt adhesive layer;
Provided is a laminated structure comprising the hot melt adhesive layer or particles present in the first adhesive layer.

  When the particles are present in the hot melt adhesive layer, these particles are partially embedded in the hot melt adhesive layer on the side facing the first adhesive layer, and the particles adhere to the first adhesive layer. When present in a layer, these particles are partially embedded in the first adhesive layer on the side facing the hot melt adhesive layer. When the laminated structure is used, the particles protrude from the side opposite to the coloring material of the hot melt adhesive layer while adhering to the hot melt adhesive layer.

Furthermore, the present invention is a method for hiding problem areas of the skin,
Obtaining color image data of an area of the skin having a problem area to be hidden;
Retouching the color image data by removing problem areas from the color image;
A color image of the retouched skin
A substrate made from a flexible material so that it can follow the deformation of the skin to which it is attached and attached to the skin;
An image-forming layer that supports the coloring material;
A hot melt adhesive layer present on the imaging layer on the side that supports the coloring material;
A water-soluble first adhesive layer present on the opposite side of the hot melt adhesive layer from the imaging layer;
A water-permeable protective layer present on the opposite side of the first adhesive layer from the hot-melt adhesive layer;
If present in the hot melt adhesive layer or the first adhesive layer, and if present in the hot melt adhesive layer, the hot melt adhesive layer is partially disposed on the side facing the first adhesive layer. A laminated structure comprising embedded and partially embedded particles on the side facing the hot melt adhesive layer when present in the first adhesive layer, the laminate structure comprising: Printing using the coloring material on the image forming layer of the laminated structure protruding from the opposite side of the hot-melt adhesive layer to the coloring material while the particles adhere to the hot-melt adhesive layer during use And steps to
Attaching the printed laminated structure to the skin and covering at least the problem area to be hidden;
Wetting the water-permeable protective layer;
Removing the water-permeable protective layer and removing at least part of the first adhesive layer to expose the hot melt adhesive layer and the particles protruding from the exposed surface of the hot melt adhesive layer. Provide a method.

  According to the present invention, the problematic part of the skin can be sufficiently and naturally hidden. The present invention can closely follow the movement of the skin and can provide a natural color and appearance to the area to be hidden, thus avoiding attention to the area to be hidden.

  Furthermore, the present invention provides cosmetic, dermatological, hydrating agents, anti-inflammatory agents, UV protective agents, UV protection agents, anti-wrinkle ingredients, antioxidants, or therapeutic agents by including in the laminate structure of the present invention. For skin makeup or medical purposes, it can also provide effects such as moisturizing, anti-inflammatory, anti-aging, and whitening, and can also improve skin condition.

DESCRIPTION OF THE EMBODIMENTS In the present specification, unless otherwise specified, the term “cosmetic” refers to a so-called cosmetic use in which a laminated structure is attached to the skin or nails or placed over the skin or nails, unless otherwise specified. Includes use for dermatological or dermo-cosmetic purposes as well as cosmetic purposes, and for post-surgical treatment. The term “dermocosmetic” is used to include areas that can belong to either makeup or dermatology, or areas at the border between makeup and dermatology. In this specification, the term “skin” is used to mean skin, mucous membrane, and nail, unless otherwise expressly indicated otherwise, or unless it is clear from the context that mucosa and nail are excluded. . Further, in the present specification, a “non-uniform” surface refers to a surface that has been processed to add irregularities. Any process commonly used to introduce irregularities can be used, an example being, but not limited to, embossing. Conversely, a “uniform” surface refers to a surface that has not been subjected to such treatment.

According to one aspect of the present invention, the inventor of the present invention is a laminated structure for cosmetic or skin cosmetic use,
A substrate made from a flexible material so that it can follow the deformation of the skin to which it is attached and attached to the skin;
An image-forming layer that supports the coloring material;
A hot melt adhesive layer present on the imaging layer on the side that supports the coloring material;
A water-soluble first adhesive layer present on the opposite side of the hot melt adhesive layer from the imaging layer;
A water-permeable protective layer present on the opposite side of the first adhesive layer from the hot-melt adhesive layer;
A laminated structure including the hot melt adhesive layer or particles present in the first adhesive layer is proposed.

  The flexible material used for the substrate that adheres to the skin preferably comprises organic resins and elastomers, such as polyurethanes, polyolefins, polysilicones, copolymers made from these monomers, or polyacrylates, Polyisoprene and polychloroprene are included, more preferably polyurethane resin or synthetic rubber. The substrate attached to the skin provides flexibility while avoiding the formation of wrinkles when the skin to which the laminated structure is attached is deformed, for example, by facial expressions or bending and stretching of the arms. A layer of polyurethane elastomer having a glass transition temperature of 0 degrees Celsius or less is preferred. The flexibility of the flexible material described above can be adjusted as desired by adding one or more of plasticizers, stiffeners, hardeners, and curing agents. The substrate can have a thickness between about 2 micrometers and about 30 micrometers, preferably between about 2 micrometers and about 10 micrometers. The substrate can be attached to the skin by a variety of means such as an adhesive, an adhesive, an adhesive, or other binding material present on the side to the skin. When an adhesive is used for the substrate, the thickness is preferably less than 30 micrometers.

  Any colored material can be used as long as they are compatible with the imaging layer and compatible with the method used for placement in the imaging layer. For example, made with or including one or more of organic dyes, organic pigments or colorants, lake colors or lake pigments, inorganic pigments, carbon black, natural pigments, and pearl pigments Inks containing the colored material in the form of a solution or emulsion can be used. However, the coloring material is not limited to the above example. Optionally, the coloring material can be formed on a layer of white coloring material. Any type of white coloring material can be used as long as they are compatible with the coloring material and the imaging layer and are compatible with the method used for placement in the imaging layer.

  The image forming layer supports a coloring material placed on the image forming layer. The image forming layer preferably contains or is composed of styrene resin, epoxy resin, or acrylic resin. In order to enhance the adhesion, the image forming layer may further include a urethane resin, a polyester resin, or an olefin resin having flexibility and high adhesion. The imaging layer can contain any other material as long as they are suitable for the support of colored materials and cosmetic or skin cosmetic applications, or the imaging layer can be colored with any other material. It can be made as long as it is suitable for material support and cosmetic or skin cosmetic applications. Among the above-mentioned resins, an acrylic resin is preferable because of its high suitability for printing. The imaging layer preferably has the strength and hardness and heat resistance necessary to withstand the printing process and hold the colored material in place.

  The thickness of the imaging layer is preferably between about 0.1 and about 5.0 micrometers, more preferably between about 0.5 and about 3.0 micrometers. These thickness ranges are preferred because of the easy handling of the layers and laminated structures during manufacture and a clear reproduction of the desired color and pattern. In order to improve the resistance and hardness of the image forming layer, the image forming layer includes a reinforced protective layer (in this application, a backup layer) containing a thermoplastic resin or a UV curable resin or made of a thermoplastic resin or a UV curable resin Also referred to as an additional layer. The imaging layer and its optional protective layer can include one or more of film-forming additives, layer stabilizers, leveling agents, or antifoaming agents as desired.

  The hot melt adhesive layer is disposed on the image forming layer so as to cover the coloring material on the image forming layer. The hot melt material can be made of at least a thermoplastic resin, or the hot melt material can include at least a thermoplastic resin. The thermoplastic resin is, for example, polyurethane elastomer, urethane resin, ethylene vinyl acetate copolymer, ethylene ethyl acrylate copolymer, acrylic resin, polyvinyl acetate, petroleum resin, hydrocarbon resin, polybutadiene, polystyrene, rosin resin, terpene. It may be a resin, polyamide resin, vinyl chloride / vinyl acetate copolymer, styrene resin, or polyester resin. In order to improve the handling and softness of the layer, wax can also be used in the hot melt adhesive layer, in particular at low concentrations. The wax may be, for example, carnauba wax, candelilla wax, paraffin wax, microcrystalline wax, alpha olefin maleic anhydride copolymer wax, Fischer-Tropsch wax, Montan wax, or petrolatum. The thickness of the hot melt adhesive layer is preferably between about 0.1 micrometer and about 10 micrometers, more preferably between about 1 micrometer and about 5 micrometers. Polyurethane elastomers, ethylene vinyl acetate copolymers, ethylene ethyl acrylate, urethane resins or polyester resins are preferably used to achieve a good fit to the coloring material or imaging layer. The hot melt adhesive layer remains on the coloring material and the imaging layer during use of the laminated structure.

  The water-soluble first adhesive layer has a reduced adhesive strength when wet so that the water-permeable protective layer can be easily removed from the first adhesive layer. The water-soluble first adhesive layer is preferably made of water-soluble cellulose derivatives such as dextrin, polyvinyl alcohol, polyvinyl pyrrolidone, pullulan, hydroxypropylcellulose, hydroxypropylmethylcellulose (HPMC), hydroxyethylcellulose, and hydroxymethylcellulose, polyacrylic It includes or is made of one or more materials selected from acid amides, polyvinyl methyl ether, poly (meth) acrylic acid-containing polymers, etherified starches, and starches. Of these materials, dextrin, pullulan, and water-soluble cellulose derivatives are more preferred options, and it is particularly preferred that the first adhesive layer be made of dextrin. The dextrin may be, but is not limited to, white dextrin, branched dextrin, cluster dextrin, or reduced dextrin. The dextrin used in the present invention is L-SPD (Showa Sangyo Co., Ltd.), Akadama Dextrin (Nissho Chemical Co., Ltd.), Amicol (Nissho Chemical Co., Ltd.), Dextrin (San-Eigen FFI Co., Ltd.). , Dextrin (Pure Chemical Co., Ltd.), Paindex (Matsutani Chemical Industry Co., Ltd.) and the like. Further, the pullulan may be, for example, pullulan (Hayashibara Co., Ltd.), and the hydroxypropylmethylcellulose may be, for example, Metrose SE-06 (Shin-Etsu Chemical Co., Ltd.). In addition, the first adhesive layer can include PEG, polymeric absorbents, or porous particles for improved water retention. The thickness of the water soluble first adhesive layer is preferably between about 1 micrometer and about 30 micrometers, more preferably between about 5 micrometers and about 20 micrometers.

A water-permeable protective layer protects each lower layer, and this protective layer can be easily removed when the first adhesive layer is wet and the adhesive strength of the first adhesive layer is reduced. The water permeable protective layer is preferably made from a material that does not dissolve in water but allows water or moisture to pass through so that water or moisture can reach the first adhesive layer. The water-permeable protective layer can be made from paper, resin-coated paper, or a layer of perforated resin material or porous resin material, or paper, resin-coated paper, or perforated resin material Alternatively, a porous resin material layer can be included. For example, PPC paper, bond paper, or Japanese paper can be used as the water-permeable protective layer, but the water-permeable protective layer is not limited thereto. The thickness of the water permeable protective layer is preferably between about 50 and about 300 g / m ² .

  The particles of the hot melt adhesive layer or the first adhesive layer are made of materials usually used in cosmetics, in particular acrylic resins such as polyurethane, silica, poly (methyl methacrylate) (PMMA), fluorine resins, melamine resins, silicone resins, talc. , Kaolin, magnesium carbonate, potassium carbonate, titanium oxide, or starch, etc., or can include such materials. The particles are preferably made of polyurethane, silica or PMMA. If the particles are present in the hot melt layer, they are partially embedded in the hot melt adhesive layer and protrude from the side of the hot melt adhesive layer facing the first adhesive layer. If the particles are present in the first adhesive layer, they are partially embedded in the first adhesive layer and project from the side of the adhesive layer facing the hot melt adhesive layer. When the particles are present in the first adhesive layer, the particles are bonded when the first adhesive layer and the hot melt adhesive layer are bonded together by applying heat and pressure during the production of the laminated structure. Fusing into a hot melt adhesive layer. During use of the laminated structure, the particles remain attached to the hot melt adhesive layer, regardless of whether it was originally present in the hot melt adhesive layer or the first adhesive layer, and the coloring material of the hot melt adhesive layer It protrudes from the opposite side. The presence of these protruding particles creates a matte natural appearance of the laminated structure in use.

  The amount of particles in the hot melt adhesive layer or first adhesive layer is preferably between about 10 wt% and about 50 wt% relative to the hot melt adhesive layer, more preferably about Between 10% and about 40% by weight. If the amount of particles is too large, the hot melt adhesive layer can easily separate from the imaging layer, and if there are too few particles, the desired matte appearance may not be achieved. It is preferable to be within these ranges. Furthermore, the particles are preferably spherical in order to optimize the matte and natural appearance of the laminated structure in use. The average diameter of the particles is preferably in the range of about 0.5 to 20 micrometers, more preferably in the range of 1 to 15 micrometers. The size of the particles need not be exactly the same, but the particles of the hot melt adhesive layer or first adhesive layer are preferably approximately the same size. Since the particles are present on the outermost surface of the laminated structure when the laminated structure is used, it is preferable that the particles have a high transparency, and depending on the desired effect, the particles are made of a translucent or opaque material It is also possible to do.

  In addition to protruding particles from the surface opposite the colored material of the hot melt adhesive layer, the surface from which the particles protrude can optionally be non-uniform. For example, the surface which makes a particle protrude can be processed to add unevenness. Any process commonly used to produce non-uniform surfaces can be used, and examples of processes for adding this irregularity are, but not limited to, embossing . By adding irregularities to the surface from which the particles protrude, the resulting non-uniform surface cooperates with the particles protruding from this surface to provide an even more dull appearance when laminated structures are used To do. Furthermore, by adding irregularities to the surface, the contact area of the exposed surface of the laminated structure during use can be reduced, and as a result, the frictional force when touched is smaller than that of a uniform surface, and therefore when touched The laminated structure can feel more comfortable and skin-like. In addition, the increase in surface roughness can help adhere cosmetics such as liquid foundations, powder foundations, or concealers to the laminated structure during use, and the radiance often caused by the thin film of oil produced by the liquid foundation. Can be reduced. Non-uniform surface roughness (due to irregularities) can be measured by any method commonly used for roughness measurement. An example of such a method is not limited to this, but may be a Fourier transform method. The roughness may be at least 3 micrometers, preferably 3 to 30 micrometers. If the roughness is less than 3 micrometers, the contact area of the surface is not sufficiently small, the laminate structure is not comfortable when touched, and cosmetics do not adhere properly to the laminate structure, resulting from the liquid foundation The shine caused by a thin film of oil is considered not to be sufficiently reduced. Of course, excessive roughness that would cause the exposed surface of the laminated structure to feel rough during use is undesirable, and those skilled in the art will be able to determine the upper limit of this roughness as needed.

  When the particles are added to the first adhesive layer, they are added directly to the coating solution of the first adhesive layer containing a water-soluble high polymer having a thickness smaller than the diameter of the particles when dried. be able to. Alternatively, the coating solution of the first adhesive layer containing the particles may be a dry thin film that does not contain particles such that the particles are partially embedded in the first adhesive layer on the side facing the hot melt adhesive layer. It can be applied to one adhesive layer. Alternatively, the hollow particles can be added to the coating solution of the first adhesive layer so that the particles emerge to the surface of the first adhesive layer facing the hot melt layer. Either of the processes described above results in particles that are partially embedded in the first adhesive layer on the side facing the hot melt adhesive layer. Alternatively, the particles can be added to the hot melt adhesive layer in a manner similar to the process described above, but if the particles are added to the hot melt adhesive layer, the particles eventually result in the first adhesive layer. Partially embedded in the hot melt adhesive layer on the side facing the surface. Applying a water-soluble first adhesive layer and a hot melt adhesive layer to each coating solution layer by known coating methods such as gravure coating, offset coating, bar coating, and die coating, and then drying each layer Can be laminated to a water-permeable protective layer. When pressure and heat are applied to the first adhesive layer and the hot melt adhesive layer, the two adhesive layers adhere to each other and if particles are present in the first adhesive layer, to the hot melt adhesive layer And fuse. Of course, if the particles are present in the hot melt adhesive layer, they are sandwiched between the first adhesive layer and the hot melt adhesive layer while remaining attached to the hot melt adhesive layer. Since the first adhesive layer is water soluble, during use of the laminated structure, the first adhesive layer is at least partially removed along with the water permeable protective layer while the particles are on the surface of the hot melt adhesive layer. Remains attached. Particles protruding from the exposed surface of the hot melt adhesive layer can create a non-glossy and natural appearance of the laminate structure when in use, allowing the laminate structure to dissolve into the skin around the area to which the laminate structure adheres Useful for

  According to the above-described aspect of the present invention, it is possible to effectively hide the skin problem, the laminated structure can realize an appearance very similar to the surrounding skin, and the laminated structure is hardly noticeable. Can be. The skin problem may be a scar, stain, freckles, spots, breakouts, bruises, bruises, or any discoloration visible on the skin. The laminated structure according to the present invention is not limited to the above-described embodiment, but is a water-retaining agent (hydrating agent), anti-antimicrobial agent that achieves a cosmetic, dermatological, or skin cosmetic effect when released from the laminated structure and absorbed by the skin. One or more layers can be included that include one or more active ingredients such as inflammatory agents, antioxidants, anti-wrinkle ingredients, UV protection agents, and therapeutic agents. The active ingredient is preferably added to a substrate or adhesive layer that is in close proximity to or in contact with the skin to which the laminate structure is attached in order to achieve an optimal effect.

  The laminated structure for makeup exists between the base material and the peelable protective layer, the peelable protective layer disposed on the side where the water-permeable protective layer of the laminated structure is not attached, A second adhesive layer that is brought into contact with the skin when the laminated structure is used can be further provided. The second adhesive layer contains at least 70% by weight of at least one monomer unit selected from the group of alkyl ester acrylate having an alkyl group of 8 to 12 carbons and alkyl ester methacrylate. It may be an acrylic adhesive layer made of coalescence. The thickness of the second adhesive layer is preferably between about 1 and 15 micrometers, preferably between about 1 and 12 micrometers, more preferably between about 1 and 8 micrometers, and most preferably between about 1 and 1 micrometers. Between 6 micrometers. The total thickness of the second adhesive layer and the substrate is preferably less than 30 micrometers, more preferably between about 2 and 20 micrometers. For the peelable protective film, a material generally called separation paper, release paper, or release liner in the field of adhesive tape can be used. For example, the peelable protective film may be a polyethylene terephthalate film having a surface treated with silicone or a laminate of paper and polyethylene having a surface treated with silicone. The second adhesive layer and the peelable protective film are not limited to the above examples.

  The laminated structure may further comprise a backup layer attached to the imaging layer on the side opposite the side that supports the coloring material. The backup layer can be made of an opaque, translucent, or transparent material that is compatible with the method used to place the color material in the imaging layer. Examples of such materials are paper and synthetic resin materials. The backup layer can provide strength and rigidity to the imaging layer during and after the process of placing the coloring material on the imaging layer.

  The laminated structure according to the present invention may further comprise a third adhesive layer between the image forming layer and the substrate to be attached to the skin. The water-soluble first adhesive layer is formed with the third adhesive layer when the first adhesive layer is wet so that the water-permeable protective layer is easily removed without causing separation of the third adhesive layer. The force required for separation is smaller than that. It is preferable that the third adhesive layer is mainly made of an acrylic resin, an epoxy resin, a ketone resin, or a cellulose resin, or contains these resins. Among these resins, an acrylic resin is particularly preferable. Polyester resin, urethane resin, or vinyl chloride-vinyl acetate copolymer resin can be added. The thickness of the third adhesive layer is preferably between about 0.05 and 20 micrometers, more preferably between about 0.1 and 5 micrometers.

Another object of the present invention is to provide a peelable protective layer, a second adhesive layer, a substrate, a third adhesive layer, an image forming layer that supports a coloring material, a hot melt adhesive layer, and a water-soluble layer. The first adhesive layer and the hot melt adhesive layer or the first adhesive layer, and when present in the hot melt adhesive layer, on the side facing the first adhesive layer, When partially embedded in the hot melt adhesive layer and present in the first adhesive layer, particles embedded in the first adhesive layer on the side facing the hot melt adhesive layer and water permeable A method for producing a laminated structure for cosmetic or skin makeup comprising a protective layer,
Disposing the coloring material on the imaging layer supported on the support layer via the third adhesive layer;
The water-permeable protective layer in which the water-soluble first adhesive layer and the hot-melt adhesive layer are arranged in this order allows the particles to be present in the hot-melt adhesive layer or the first adhesive layer. Steps to create
Adhering the hot melt adhesive layer to the imaging layer by applying pressure and heat causes the particles to fuse into the hot melt adhesive layer if present in the first adhesive layer. Leaving it attached to the hot melt adhesive layer if it is present in the hot melt adhesive layer and sandwiching it between the hot melt adhesive layer and the first adhesive layer;
Removing the support layer;
Attaching the third adhesive layer to a substrate disposed on the peelable protective layer via the second adhesive layer.

  The coloring material (and the white coloring material) is applied onto the imaging layer by thermal transfer, ink jet printing, gravure printing, offset printing, silk screen printing, reverse roll coating using a gravure plate, or any other conventional method Can be arranged.

Furthermore, the present invention is a method for hiding problem areas of the skin,
Obtaining color image data of an area of the skin having a problem area to be hidden;
Retouching the color image data by removing problem areas from the color image;
A color image of the retouched skin
A substrate made from a flexible material so that it can follow the deformation of the skin to which it is attached and attached to the skin;
An image-forming layer that supports the coloring material;
A hot melt adhesive layer present on the imaging layer on the side that supports the coloring material;
A first adhesive layer present on the opposite side of the hot melt adhesive layer from the imaging layer;
A water-permeable protective layer present on the opposite side of the first adhesive layer from the hot-melt adhesive layer;
If present in the hot melt adhesive layer or the first adhesive layer, and if present in the hot melt adhesive layer, the hot melt adhesive layer is partially disposed on the side facing the first adhesive layer. A laminated structure comprising embedded and partially embedded particles on the side facing the hot melt adhesive layer when present in the first adhesive layer, the laminate structure comprising: Printing using the coloring material on the image forming layer of the laminated structure protruding from the opposite side of the hot-melt adhesive layer to the coloring material while the particles adhere to the hot-melt adhesive layer during use And steps to
Attaching the printed laminated structure to the skin and covering at least the problem area to be hidden;
Wetting the water-permeable protective layer;
Removing the water-permeable protective layer and removing at least part of the first adhesive layer to expose the hot melt adhesive layer and the particles protruding from the exposed surface of the hot melt adhesive layer. Provide a method.

  Skin color image data can be obtained by using a digital camera. Color image data of an area including a problem portion to be hidden is preferably obtained. The problem part can be removed from the color image by deleting data corresponding to the problem part and replacing the data with data in a region near the problem part.

The method described above
Obtaining color image data of the retouched color image and skin in the vicinity of the retouched color image;
Correcting the retouched color image data so that there is no difference from the skin in the vicinity of the retouched color image in the appearance of the corrected color image;
Printing the color image of the skin after correction on the image forming layer with a coloring material.

  When the retouched color image is superimposed on the skin, the color image can be attached to the skin or simply placed on the skin for acquisition of image data. The retouched color image data can be corrected so as to cancel the color difference between the retouched color image and the skin in the region other than the problem area. The color image data of the retouched color image data and the retouched and corrected color image data in the color space corresponds to the skin image data of the area other than the problem area, or from the skin image data of the area other than the problem area. It can be done in such a way that there is no difference. The color space may be one of common color models such as CIE, RGB encoding, Munsell color system, or NCS color system. In this context, “no difference” means that for actual cosmetic or medical purposes, the difference is not substantial, or can be ignored or small.

It is the schematic which shows the conventional laminated structure at the time of use. It is the schematic which shows embodiment of the laminated structure by this invention at the time of use. 5 is a graph showing the glossiness of a conventional laminated structure and a laminated structure according to an embodiment of the present invention. The SEM (scanning electron microscope) photograph of the surface of the conventional hot-melt-adhesion layer is shown. The photographs are taken at three magnifications (top: x100; center: x500; bottom: x2000). 2 shows an SEM photograph of the surface of a hot melt adhesive layer according to an embodiment of the present invention. The photographs are taken at three magnifications (top: x100; center: x500; bottom: x2000).

  Embodiments of the present invention are described below. It should be noted that the embodiments and their descriptions are presented solely for the purpose of assisting in understanding the present invention and should not be construed as limiting the invention to the embodiments described below. It is.

  FIG. 1A shows a schematic diagram of a conventional laminated structure, and FIG. 1B shows a schematic diagram of a laminated structure according to an embodiment of the present invention when used on the skin. While the hot-melt adhesive layer of the conventional laminated structure has not been changed by any method, the hot-melt adhesive layer according to the present invention has a surface (skin) opposite to the image-forming layer and the substrate of the hot-melt layer. Spherical particles projecting from the outermost surface of the laminated structure when attached to the surface.

  To produce the laminated structure shown in FIG. 1B, a second peelable protective layer, a third adhesive layer (a backup layer may be added), an imaging layer, and a coloring material (image A four-layer structure is formed, in which a white coloring material layer may be provided between the forming layer and the coloring material. Any film can be used as the second peelable protective layer. However, considering durability and cost, a PET film having a thickness between about 2.5 and 200 micrometers is preferred. It is preferable that the third adhesive layer is mainly made of an acrylic resin, an epoxy resin, a ketone resin, or a cellulose resin, or contains these resins. Among these resins, an acrylic resin is particularly preferable. In order to control the peelability of the third adhesive layer from the second peelable protective layer and the strength of the third adhesive layer, a polyester resin, a urethane resin, or a vinyl chloride-vinyl acetate copolymer resin is added. It is also possible. The thickness of the third adhesive layer is preferably between 0.05 and 20 micrometers, more preferably between 0.1 and 5 micrometers. The imaging layer on the third adhesive layer is preferably made of styrene resin, epoxy resin or acrylic resin. If necessary, a urethane resin, a polyester resin, an olefin resin, or an acrylic resin having flexibility and high adhesiveness can be added in order to increase the adhesiveness of the image forming layer. Among these materials, an acrylic resin suitable for printing is preferable.

  Various fillers can also be added to reduce blocking or tack between layers. The filler may be formed of or contain at least fluororesin, melamine resin, silicone, talc, kaolin, magnesium carbonate, potassium carbonate, titanium oxide, silica, or starch. Considering the image receiving capability and thermal sensitivity of the imaging layer, the thickness of the imaging layer is preferably between about 0.1 and about 5.0 micrometers, more preferably about 0.5 to about 3.0 micrometers. Between meters. Further, to increase the rigidity of the final product, a backup layer made of a thermosetting resin or UV curable resin is placed between the second peelable protective layer and the imaging layer. Can do. A layer composed of a coloring material and various binders is printed onto the image forming layer. Any conventional coloring material can be used. Examples of the binder include vinyl chloride-vinyl acetate copolymer resin, acrylic resin, epoxy resin, urethane resin, and polyester resin. The thickness of the layer of coloring material is preferably 0.1 to 20 micrometers. Further, a layer composed of a white coloring material and various binders such as vinyl chloride-vinyl acetate copolymer resin, acrylic resin, epoxy resin, urethane resin, and polyester resin is colored into an image forming layer. You may print below the layer of material. The thickness of the white colored layer is preferably about 1 to 30 micrometers to ensure coverage. The coloring material and the white coloring material can be applied to the imaging layer by various printing methods. Thermal transfer or ink jet printing is preferred to match the color of the final laminate structure to the skin color to which the structure is deposited. This is because, according to these printing methods, the color of the skin can be scanned and digitized so that the same color can be printed on the imaging layer. However, any other printing method that would reduce the cost of manufacturing the laminated structure can be used. In that case, it may be necessary to prepare an imaging layer pre-printed in several different colors.

A three-layer structure comprising a water-permeable protective layer, a water-soluble first adhesive layer, and a hot-melt adhesive layer, and having particles in the hot-melt adhesive layer or the first adhesive layer is created. The Any water permeable material can be used as the water permeable protective layer. Examples of such materials may be, but are not limited to, PPC paper, bond paper, or Japanese paper. The thickness of the water-permeable protective layer is preferably about 50 to 300 g / m ² . Various water-soluble high polymers can be used for the first adhesive layer. Dextrin, pullulan, and water-soluble cellulose derivatives are preferred options, and it is particularly preferred that the first adhesive layer is made of dextrin. The hot melt adhesive layer can be made of at least a thermoplastic resin, or the hot melt adhesive layer can include at least a thermoplastic resin. From the viewpoint of adhesiveness, a polyurethane elastomer is preferably used. Optionally, a wax can be added to the hot melt adhesive layer to improve the handling and softness of the layer. The particles are preferably made of polyurethane, silica, or PMMA and added to the first adhesive layer such that they are partially embedded in the surface of the first adhesive layer facing the hot melt adhesive layer. Alternatively, the particles can be added to the hot melt adhesive layer so as to be partially embedded in the surface of the hot melt adhesive layer facing the first adhesive layer.

  The four-layer structure and the three-layer structure described above are fused by applying heat and pressure, and the hot-melt adhesive layer is fused to the imaging layer to cover the coloring material, and within the first adhesive layer The existing particles fuse into the hot melt adhesive layer. When the particles are present in the hot-melt adhesive layer, the particles are sandwiched between the hot-melt adhesive layer and the first adhesive layer while remaining attached to the hot-melt adhesive layer. The amount of particles that fuse into the hot melt adhesive layer (which determines the matte appearance of the laminate structure in use) can be controlled by adjusting the pressure and heat applied during this process. it can.

  A four-layer structure composed of a carrier layer, a base material to be attached to the skin, a second adhesive layer, and a peelable protective film is created. The carrier layer is preferably made of a thermoplastic resin such as polyurethane, polyethylene, polypropylene, ionomer, polyamide, polyvinyl chloride, polyvinylidene chloride, ethylene vinyl acetate copolymer, thermoplastic polyester, or polytetrafluoroethylene. Formed from film. The film is preferably laminated to a piece of paper and the carrier layer is preferably thicker than the substrate or more rigid than the substrate. The substrate may be a layer of polyurethane elastomer having a glass transition temperature of 0 degrees Celsius or less. The peelable protective film may be a release paper, a separation paper, or a release liner commonly used in the field of adhesive tape. The second peelable protective layer is removed from the seven layer structure described above and the carrier layer is removed from the four layer structure. The three-layer structure is then applied to the now six-layer structure, with the third adhesive layer present on the substrate that adheres to the skin.

  Water retention agents, anti-inflammatory agents, UV protection agents, anti-wrinkle ingredients, antioxidants, therapeutic agents, or combinations of two or more of these substances can be added to the substrate that adheres to the skin. Alternatively, one or more of these materials can be added to the third adhesive layer. By including one or more of these materials in the laminate structure, the laminate structure can provide a cosmetic, dermatological, or skin cosmetic effect.

  When using the laminated structure, the protective film is removed from the above-mentioned laminated structure containing the coloring material so that the second adhesive layer is exposed and the laminated structure can adhere to the skin.

  The water-permeable protective layer is wetted so that water or moisture can penetrate through the water-permeable protective layer and reach the water-soluble first adhesive layer. At least part of the water-permeable protective layer is removed from the laminated structure having the water-permeable protective layer so that the coloring material is visible from the outside and the hot melt adhesive layer protruding the particles is exposed. It is. A part of the first adhesive layer may or may not remain on the hot melt adhesive layer after the removal of the water-permeable protective layer. The amount and proportion of the coloring material is determined so that the laminated structure hides the problem and looks like the skin around the laminated structure. The amount and proportion of particles protruding from the hot melt adhesive layer can create a natural matte appearance that further helps in making the laminate structure look similar to the skin surrounding the laminate structure.

  After the laminate structure is attached to the skin, water can be applied to the exposed surface of the hot melt adhesive layer. The cosmetic product can then be applied to the surface of the hot melt adhesive layer to make the laminated structure more invisible.

  Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples, but the present invention is not limited thereto.

Examples 1-5 and Comparative Example 1 were prepared as follows.
(Creation of a four-layer structure including an image forming layer)
A PET film piece (second peelable protective layer) having a thickness of 6 micrometers by gravure coating in this order with a coating solution for a third adhesive layer and a coating solution for an image forming layer described below. Applied. These layers were dried to produce an imaging layer capable of thermal transfer printing. A concealing layer of white colored material having a thickness of 10 micrometers containing an acrylic binder was formed on the imaging layer. A skin colored material having a thickness of 3 micrometers (eg, L: 60.52, a: 14.25, b: 21.30) is then formed over the layer of white colored material and performed. The four-layer structure of Example 1 was produced. The same four-layer structure was created for Examples 2-5 and Comparative Example 1.

Coating solution for the third adhesive layer (coated to be 1.5 g / m ² when dried):
Acrylic resin 9.9 parts Polyester resin 0.1 part Toluene 45.0 parts MEK (methyl ethyl ketone) 45.0 parts

Coating solution for the image forming layer (coated to be 0.5 g / m ² when dried):
Acrylic resin 9.0 parts Polyester resin 1.0 part Toluene 45.0 parts MEK (methyl ethyl ketone) 45.0 parts

(Creation of a three-layer structure including a hot melt adhesive layer)
By bar coating the aqueous solution of dextrin to PPC paper commonly used for photocopying so that when dried, a layer of a water-soluble first adhesive layer of 6.0 g / m ² is formed by the dextrin solution. Applied. Transparent spherical particles of crosslinked polyurethane having an average diameter of 7 micrometers (Taimicck Beads UCN-8070CM manufactured by Dainichi Seika Kogyo Co., Ltd.) 30 parts by weight (30% by weight) and urethane resin binder 100 parts by weight A hot melt adhesive layer having a thickness of 4 micrometers when dried (3 micrometers of the particles are present in the water-soluble first adhesive layer). ) To form the three-layer laminated structure of Example 4. For Examples 1-3, the same three-layer structure was used, for Example 1, silica particles having an average diameter of 5 micrometers, and for Example 2, PMMA particles having an average diameter of 6 micrometers. Example 3 was prepared with the difference that the amount of polyurethane particles was 10% by weight. In Example 5, particles were added to the first adhesive layer. Specifically, a thin layer of an aqueous solution for the first adhesive layer was applied to paper and dried. Next, a second layer of an aqueous solution for the first adhesive layer containing 30% by weight of polyurethane particles was applied to the dried thin first adhesive layer. Next, a coating solution for the hot melt adhesive layer that did not contain any particles was coated onto the first adhesive layer containing the partially embedded particles. Embossing was applied to the surface of the hot melt adhesive layers of Examples 3-5. For Comparative Example 1, the three-layer structure does not contain any particles in the hot melt adhesive layer or the first adhesive layer.

(Creation of a four-layer structure including a base material)
Protective film capable of peeling an organic solvent solution for the second adhesive layer containing an acrylic adhesive (a copolymer of 2-ethylhexyl acrylate / vinyl acetate / acrylate at 85/11/4 wt%) It was applied to one side of (release paper) by bar coating to form a layer having a dry thickness of 5 micrometers. Next, the solution was dried to form a second adhesive layer.

  A high quality paper having an embossed polypropylene surface is used as a carrier layer, and a polyether type polyurethane elastomer (Elastollan (registered trademark) ET880 (BASF Japan Ltd.) (glass transition temperature: 145 degrees Celsius) is included on this. The solution for the substrate layer was applied by bar coating to form a layer having a thickness of 5 micrometers upon drying, and then the solution was dried to form the substrate layer.

In order to evaluate the swellability of a film produced from the polyurethane elastomer described above, a layer having a thickness of 75 micrometers and a size of 100 mm × 100 mm was applied to the polyurethane elastomer in a manner similar to the preparation of the substrate layer described above. Created using. When this layer was immersed in water for 24 hours, the degree of swelling was evaluated to be 5%.
About Examples 1-5 and Comparative Example 1, the above-mentioned base material layer was made to adhere to the 2nd adhesion layer, and it was constituted by a carrier layer, a base material, the 2nd adhesion layer, and a peelable protective film. The resulting 4-layer structure was produced.

(Creation of final laminated structure)
A final laminate structure was produced from each of the above structures according to the following steps.
Step 1: The surface of the colored material layer of the four-layer structure was placed on the surface of the hot-melt adhesive layer of the three-layer structure. A heated roller was then applied to fuse the structure to produce a 7 layer structure.
Step 2: The carrier layer of the four-layer structure including the substrate was removed.
Step 3: The second peelable protective layer of the seven layer structure from Step 1 was removed.
Step 4: The exposed surface of the third adhesive layer of the structure from Step 3 which now has 6 layers was placed on the exposed surface of the substrate of the laminated structure from Step 2. The structure was then fused by applying pressure and heat to produce the final laminate structure to be attached to the skin.
The above steps were performed to produce the final laminate structures of Examples 1-5 and Comparative Example 1.

(Evaluation of laminated structure)
The peelable protective film of the final laminated structure is removed, and the final laminated structure is attached to a skin reproduction product (manufactured by Beaulux Co., Ltd.) called bioskin that simulates the skin of a woman in her 20s. At least a part of the water-permeable protective layer and the first adhesive layer was removed by applying water to the laminated structure, and the laminated structure was evaluated for appearance and gloss. Appearance was visually evaluated to determine whether the laminated structure appeared glossy or non-glossy, and whether the color of the laminated structure appeared similar to the color of the skin replica. Gloss or gloss (gloss) was measured using a Konica Minolta GM-268 at an incident / detection angle of 60 degrees. The results are summarized in Table 1 below, and the glossiness of the laminated structure is shown in the graph of FIG. The outermost surface of the laminated structure was examined by a scanning electron microscope (SEM). Photographs of Comparative Example 1 (conventional laminated structure) and Example 4 (representative embodiment of the present invention) are shown in FIGS. 3A and 3B, respectively. The top photo in FIG. 3 is a photo taken at a magnification of x100, the central photo is a photo taken at a magnification of x500, and the bottom photo is taken at a magnification of x2000. It is a photograph.

  From FIG. 3A, it is clear that the outermost surface of the laminated structure of Comparative Example 1 is relatively flat. On the other hand, the SEM photograph (FIG. 3B) of Example 4, which is a representative embodiment of the present invention, shows a non-uniform surface covered with spherical particles. Furthermore, as can be seen from Table 1 and FIG. 2, the laminated structure of Comparative Example 1 is extremely glossy and has a high glossiness. In contrast, all of the laminated structures of Examples 1-5 have a non-glossy appearance and a much lower gloss than the laminated structure of Comparative Example 1. Furthermore, the laminated structure of Example 5, which is a particularly preferred embodiment of the present invention, has not only low gloss, but also has a color very similar to the color of the bioskin replica to which the laminated structure is attached. Yes.

  The invention has been described with reference to the embodiments described above. These examples are merely examples of specific possibilities, and those skilled in the art can understand that various modifications are possible and that such modifications are also included in the present invention. Will.

Claims (16)

-A substrate to be attached to the skin, made from a flexible material so that it can follow the deformation of the attached skin;
An image forming layer provided on the substrate and supporting the coloring material;
A hot melt adhesive layer provided on the image forming layer in a state of covering the coloring material;
A water-soluble first adhesive layer provided on the opposite side of the hot melt adhesive layer from the imaging layer;
A water-permeable protective layer provided on the opposite side of the first adhesive layer from the hot-melt adhesive layer;
A laminated structure for cosmetic or dermatological use, comprising :
-Particles are present in the hot melt adhesive layer or the first adhesive layer, and the particles have a total weight of the hot melt adhesive layer when using the laminated structure from which the water-permeable protective layer is peeled off. The amount of 10% by weight to 50% by weight is embedded in the hot melt adhesive layer in a state of protruding from the surface of the hot melt adhesive layer opposite to the coloring material, Laminated structure for cosmetic or skin makeup . The particles are partially embedded in the hot melt adhesive layer on the side facing the first adhesive layer when present in the hot melt adhesive layer;
- the particles, when present in the first adhesive layer, said embedded on the side facing the hot melt adhesive layer in part on the first adhesive layer, the decorative according to 請 Motomeko 1 Laminated structure for skin or cosmetic use. The laminated structure for cosmetics or skin cosmetics according to claim 1 or 2, wherein the surface of the hot melt adhesive layer opposite to the coloring material is subjected to uneven treatment. The laminated structure for cosmetics or skin cosmetics according to any one of claims 1 to 3, wherein the particles have a particle size larger than a layer thickness of the hot melt adhesive layer. A peelable protective layer present on the opposite side of the substrate from the imaging layer;
-A second adhesive layer that is present between the substrate and the peelable protective layer and contacts the skin during use of the laminate structure;
The laminate for cosmetic or skin makeup according to any one of claims 1 to 4, further comprising: a third adhesive layer between the image forming layer and the base material to be adhered to the skin. Structure. The laminated structure for cosmetic or skin makeup according to any one of claims 1 to 5 , further comprising a backup layer attached to the image forming layer on a side opposite to the side supporting the coloring material. object. The particle according to any one of claims 1 to 6 , wherein the particles include polyurethane, silica, acrylic resin, fluorine resin, melamine resin, silicone resin, talc, kaolin, magnesium carbonate, potassium carbonate, titanium oxide, or starch. A laminated structure for cosmetic or skin cosmetics as described in 1. above. The laminated structure for cosmetics or skin cosmetics according to any one of claims 1 to 7 , wherein the particles are made of polyurethane. The laminated structure for cosmetics or skin cosmetics according to any one of claims 1 to 8 , wherein the particles are spherical. The laminated structure for cosmetic or skin makeup according to any one of claims 1 to 9 , wherein the particles have a diameter of 0.5 to 20 micrometers. The laminated structure for cosmetics or skin cosmetics according to any one of claims 1 to 10, wherein the hot melt adhesive layer has a thickness of 0.1 to 10 micrometers. The hot melt adhesive layer is made of polyurethane elastomer, urethane resin, ethylene vinyl acetate copolymer, ethylene ethyl acrylate copolymer, acrylic resin, polyvinyl acetate, petroleum resin, hydrocarbon resin, polybutadiene, polystyrene, rosin resin, terpene. The laminated structure for cosmetics or skin cosmetics according to any one of claims 1 to 11 , comprising a resin, a polyamide resin, a vinyl chloride / vinyl acetate copolymer, a styrene resin, or a polyester resin. The laminated structure for cosmetics or skin cosmetics according to any one of claims 1 to 12 , wherein the hot melt adhesive layer further contains a wax. The water-soluble first adhesive layer is dextrin, polyvinyl alcohol, polyvinyl pyrrolidone, pullulan, water-soluble cellulose derivative, polyacrylic acid amide, polyvinyl methyl ether, poly (meth) acrylic acid-containing polymer, etherified starch, or include starch, cosmetic or laminate structure for dermocosmetic according to any one of claims 1 to 13. A method of hiding skin problems,
Obtaining color image data of an area of the skin having a problem area to be hidden;
Retouching the color image data by removing problem areas from the color image;
- a color image of skin obtained by retouching, to the image forming layer of the laminate structure according to any one of claims 1 to 14, comprising the steps of printing have use coloring material,
The step of adhering the printed laminated structure to the skin and covering at least the problem area to be hidden;
-Wetting the water-permeable protective layer;
-Exposing the particles protruding from the hot melt adhesive layer and the exposed surface of the hot melt adhesive layer by removing the water-permeable protective layer and removing at least a part of the first adhesive layer; Including methods. Obtaining the retouched color image and color image data of skin in the vicinity of the retouched color image;
-Correcting the retouched color image data so that there is no difference between the appearance of the corrected color image and the skin in the vicinity of the retouched color image;
- The method of claim 15, the color image after correction of the skin, further comprising in have use a coloring material and a step of printing on said imaging layer.