Nail art

Abstract

This utility model provides a nail art tip. The nail art tip includes: a base layer adapted to the surface of human nails; an adhesive layer, a decorative layer, and a protective layer, which are sequentially stacked; the adhesive layer contains urea-acrylic resin to bond the adhesive layer and the decorative layer together; wherein the decorative layer is formed by a powder structure. The technical solution provided by this utility model solves the technical problem of structural delamination that easily occurs when using existing mirror-style powder nail art tips.

Description

Technical Field

[0001] This utility model relates to the field of nail art tip technology, and more specifically, to a nail art tip. Background Technology

[0002] Currently, the existing manufacturing process for mirror powder nail tips involves evenly applying a base coat to the nail tip substrate and curing it under a lamp. Then, a small amount of mirror powder is applied with a sponge to create a mirror effect, followed by applying a top coat over the mirror powder.

[0003] However, the adhesion between the base coat and the mirror powder in the existing nail tip technology is poor. As a result, when using it, an additional layer of top coat must be applied to the front edge of the nail tip to prevent the layers of material from separating during wear, which leads to a poor user experience. Utility Model Content

[0004] The main purpose of this utility model is to provide a nail art tip to solve the technical problem that the existing magic mirror powder nail art tip is prone to structural delamination during use.

[0005] To achieve the above objectives, this utility model provides a nail art tip, comprising:

[0006] A substrate layer is provided in a way that is adapted to the surface of a human fingernail;

[0007] An adhesive layer, a decorative layer, and a protective layer are sequentially stacked; the adhesive layer contains urea-acrylic resin to bond the adhesive layer and the decorative layer together; the decorative layer is formed by laying down a powder structure.

[0008] Furthermore, the mass percentage of urea-acrylic resin in the adhesive layer is greater than or equal to 0.2 and less than or equal to 0.3.

[0009] Furthermore, the adhesive layer also contains a surfactant, and the protective layer contains methacrylic acid for reacting with the surfactant.

[0010] Furthermore, the thickness of the adhesive layer is greater than or equal to 20 μm and less than or equal to 30 μm.

[0011] Furthermore, the thickness of the decorative layer is greater than or equal to 5 μm and less than or equal to 10 μm.

[0012] Furthermore, the thickness of the protective layer is greater than or equal to 30 μm and less than or equal to 40 μm.

[0013] Furthermore, the protective layer contains a trimethylpropane triacyl compound; and / or,

[0014] The protective layer contains acrylic resin.

[0015] Further, the powder structure comprises at least two titanium dioxide layers, at least two silica layers, and a mica layer, wherein one of the at least two silica layers is located on one side of the mica layer and the other on the other side of the mica layer; and one of the at least two titanium dioxide layers is located on the side of the at least two silica layers furthest from the mica layer and the other on the side of the at least two silica layers furthest from the mica layer; and / or,

[0016] The maximum particle size of the powder structure is greater than or equal to 0.01 mm and less than or equal to 0.1 mm.

[0017] Furthermore, the substrate layer is made of any one of acrylonitrile-butadiene-styrene copolymer, polymethyl methacrylate, polycarbonate, polylactic acid, polyvinyl chloride, acrylonitrile-styrene copolymer, and polybutylene succinate; and / or,

[0018] The thickness of the substrate layer is greater than or equal to 0.1 mm and less than or equal to 0.5 mm.

[0019] Furthermore, nail art also includes:

[0020] A bonding layer is located on the side of the substrate layer away from the adhesive layer, and is used to bond with human nails.

[0021] By applying the technical solution of this utility model, urea-formaldehyde acrylic resin, a viscoelastic polyurethane acrylate, allows the decorative layer of the nail art piece to adhere firmly to the substrate layer in the adhesive layer. This significantly improves the adhesive stability of the nail art piece and prevents delamination or peeling of the decorative layer from the substrate layer during use. Simultaneously, the layer structure of the decorative layer is preserved during the application of the protective layer. This design allows the decorative layer to maintain its shape and color for a long time, enhancing the overall durability of the nail art piece and maintaining a good appearance even in daily use. Therefore, the technical solution of this utility model solves the technical problem of structural delamination that easily occurs during the use of existing mirror-finish nail art pieces. Attached Figure Description

[0022] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0023] Figure 1 A partial cross-sectional structural diagram of a nail art piece provided according to an embodiment of the present invention is shown;

[0024] Figure 2A schematic diagram of the powder structure of a nail polish sheet provided according to an embodiment of the present invention is shown.

[0025] The above figures include the following reference numerals:

[0026] 10. Substrate layer;

[0027] 20. Adhesive layer;

[0028] 30. Decorative layer; 31. Titanium dioxide layer; 32. Silica layer; 33. Mica layer;

[0029] 40. Protective layer. Detailed Implementation

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] like Figure 1 and Figure 2 As shown, an embodiment of this utility model provides a nail art piece, which includes a substrate layer 10, an adhesive layer 20, a decorative layer 30, and a protective layer 40. The substrate layer 10 is adapted to fit the surface of human nails, and the substrate layer 10, adhesive layer 20, decorative layer 30, and protective layer 40 are stacked sequentially; the adhesive layer 20 contains urea-acrylic resin to bond the adhesive layer 20 and the decorative layer 30 together; wherein, the decorative layer 30 is formed by laying down a powder structure.

[0032] The nail art pieces provided in this embodiment of the invention utilize urea-alkyl acrylate resin, a viscoelastic polyurethane acrylate. By using urea-alkyl acrylate resin in the adhesive layer 20, the decorative layer 30 of the nail art piece can firmly adhere to the substrate layer 10, thereby significantly improving the adhesive stability of the nail art piece and preventing delamination or detachment of the decorative layer 30 from the substrate layer 10 during use. Simultaneously, the layer structure of the decorative layer 30 is not damaged when the protective layer 40 is applied. This design allows the decorative layer 30 to maintain its shape and color for a long time, enhancing the overall durability of the nail art piece and maintaining a good appearance even in daily use. Therefore, the nail art pieces provided in this embodiment can solve the technical problem of structural delamination that easily occurs during the use of existing mirror powder nail art pieces.

[0033] Specifically, the adhesive layer 20 is a UV-curable primer, and the protective layer 40 is a UV-curable topcoat. In this way, the adhesive layer 20 and the protective layer 40 can complete the curing process in a short time using UV curing technology, shortening the product manufacturing cycle.

[0034] Specifically, the decorative layer 30 is composed of a multi-component powder structure, including but not limited to mirror powder, metallic powder, laser powder, holographic powder, mermaid color powder, color-changing powder, three-dimensional powder, and glass highlighting powder. The decorative layer 30 is formed by uniformly spreading the selected powder structure on the already cured or semi-cured and adhesive layer 20. This step can be carried out by various methods such as manual powder spreading, mechanical spraying, or magnetic alignment technology.

[0035] Specifically, during the installation process, powder structures can form multi-layered structures to enhance the decorative effect. For example, a layer of colored powder can be laid first, followed by a layer of reflective powder. Furthermore, the installation of powder structures can involve combinations of different materials in different locations. By precisely controlling the installation methods and positions of different types of powder structures, various patterns can be created.

[0036] Specifically, the mass percentage of urea-acrylic resin in the adhesive layer 20 is greater than or equal to 0.2 and less than or equal to 0.3. This structural configuration allows for adjustment of the viscosity and adhesive strength of the adhesive layer 20 by controlling its mass percentage, enabling the decorative layer 30 to adhere better to the substrate layer 10 without resulting in an excessively thick coating or insufficient adhesion due to too little resin. The specific proportion of urea-acrylic resin ensures the stability and uniformity of the adhesive layer 20 during UV curing, preventing incomplete curing or delamination, thus guaranteeing the structural stability and appearance quality of the nail art.

[0037] Specifically, the adhesive layer 20 also contains a surfactant, and the protective layer 40 contains methacrylic acid for reacting with the surfactant. With this structural arrangement, the presence of the surfactant reduces the interfacial tension between the decorative layer 30 and the adhesive layer 20, promoting close contact and bonding between them. Methacrylic acid, being a strong acid, can disrupt the surface of the adhesive layer 20 and react with the surfactant in it. When the methacrylic acid in the protective layer 40 reacts with the surfactant in the adhesive layer 20, stronger chemical bonds are formed, enhancing the interlayer bonding between the protective layer 40 and the adhesive layer 20 and preventing delamination of the nail art during use. Methacrylic acid also contributes to the uniform curing of the protective layer 40 during the UV curing process, forming a dense surface that provides better protection and aesthetics. This enhanced interlayer bonding through chemical reaction allows the nail art to resist external forces during daily use, preventing the decorative layer from peeling or cracking due to minor wear or impact, thus improving the overall durability and lifespan of the product.

[0038] Specifically, the thickness of the adhesive layer 20 is greater than or equal to 20 μm and less than or equal to 30 μm. This structural arrangement ensures good adhesion between the adhesive layer 20 and the substrate layer 10 and the decorative layer 30. If it is too thin, sufficient adhesive strength may not be formed; while if it is too thick, it may lead to unevenness in the entire nail structure, affecting aesthetics and wearing comfort. A thickness of 20 μm-30 μm helps to provide a smooth transition between the substrate layer 10 and the decorative layer 30, reducing abrupt changes between layers, allowing the decorative layer 30 to adhere more evenly, and improving the surface quality and decorative effect of the final product.

[0039] In this embodiment, the thickness of the decorative layer 30 is greater than or equal to 5 μm and less than or equal to 10 μm. This structural arrangement allows for precise control of the decorative layer 30's thickness, ensuring the refinement of the decorative effect (such as a mirror finish). A thinner decorative layer 30 better showcases the color and gloss of the mirror finish. Furthermore, this thickness range of the decorative layer 30 facilitates a tighter bond with the adhesive layer 20 and the protective layer 40, reducing the risk of delamination and improving the durability and structural stability of the nail art.

[0040] Specifically, the protective layer 40 has a thickness greater than or equal to 30μm and less than or equal to 40μm. This structural design, with its appropriate thickness, significantly increases the nail art's abrasion resistance, preventing scratches, wear, and other damage during daily use, thus extending its lifespan. The 30μm-40μm thickness range provides sufficient strength while maintaining a thin profile, preventing damage from external forces during wear.

[0041] Specifically, the protective layer 40 contains trimethylpropane triacyl compound. This configuration utilizes trimethylpropane triacyl compound, a high-strength, high-toughness, and highly stable polymer material. After UV curing, this material composition increases the hardness of the protective layer 40 while maintaining appropriate toughness. This allows the protective layer 40 to resist scratches and impacts without easily cracking, thereby enhancing the bond between the protective layer 40 and the adhesive layer 20 and preventing delamination of the nail art.

[0042] Specifically, the protective layer 40 contains acrylic resin. This design, with the addition of acrylic resin, gives the protective layer 40 excellent abrasion resistance, enabling it to withstand wear and tear from daily activities and extending the lifespan of the nail art. It also forms a highly transparent coating that does not obscure the color and gloss of the decorative layer 30, while enhancing the overall shine of the nail art.

[0043] Specifically, the protective layer 40 contains methacrylic acid, acrylic resin, and trimethylpropane triacyl group compound. This configuration not only improves the hardness, transparency, and abrasion resistance of the protective layer but also maintains appropriate toughness, ensuring that the nail art tip is strong enough without being too hard and prone to peeling or damaging the nails. It also effectively enhances the bond between the protective layer 40 and the adhesive layer 20, preventing the nail art tip from delaminating.

[0044] In this embodiment, as Figure 2 As shown, the powder structure includes at least two titanium dioxide layers 31, at least two silica layers 32, and a mica layer 33. One of the at least two silica layers 32 is located on one side of the mica layer 33, and the other is located on the other side of the mica layer 33. One of the at least two titanium dioxide layers 31 is located on the side of one of the at least two silica layers 32 that is away from the mica layer 33, and the other is located on the other side of the at least two silica layers 32 that is away from the mica layer 33. With this arrangement, by layering at least two titanium dioxide layers 31 and at least two silica layers 32 on both sides of the mica layer 33, the difference in refractive index of the different materials creates an interference effect, enhancing the gloss and color depth of the decorative layer, thereby producing a mirror effect. Furthermore, this multi-layered structure increases the stability of the decorative layer 30, reduces wear and delamination during daily use, and improves the durability of the nail art. The dual protection of the titanium dioxide layer 31 and the silicon dioxide layer 32 not only prevents color fading but also protects against chemical corrosion. Meanwhile, the low friction properties of silicon dioxide help reduce scratches and prolong the durability of the decorative effect.

[0045] Specifically, the powder structure is formed by electroplating at least two titanium dioxide layers 31, at least two silicon dioxide layers 32, and a mica layer 33.

[0046] Specifically, the maximum particle size of the powder structure is greater than or equal to 0.01 mm and less than or equal to 0.1 mm. This setting, controlling the maximum particle size of the powder structure, helps ensure the smoothness and delicate texture of the decorative layer 30 surface. Excessively large particle sizes result in a rough surface, affecting the clarity and gloss of the mirror effect. Powder within this particle size range can be distributed more evenly, avoiding uneven thickness of the decorative layer caused by varying particle sizes, which affects aesthetics. At the same time, proper particle size control helps improve the bonding force with the adhesive layer 20, thereby better protecting the formed decorative layer 30 and preventing delamination of the nail art structure.

[0047] Specifically, the mica content in decorative layer 30 is greater than or equal to 0.2% and less than or equal to 0.3%. The titanium dioxide content in decorative layer 30 is greater than or equal to 0.3% and less than or equal to 0.4%. The silicon dioxide content in decorative layer 30 is greater than or equal to 0.3% and less than or equal to 0.4%.

[0048] Specifically, the substrate layer 10 is made of any one of acrylonitrile-butadiene-styrene copolymer (ABS), polymethyl methacrylate (acrylic), polycarbonate (PC), polylactic acid (PLA), polyvinyl chloride (PVC), acrylonitrile-styrene copolymer (AS), and polybutylene succinate (PBS). This arrangement, using materials such as ABS and PC as the substrate layer 10, ensures that the nail art piece possesses sufficient strength while also exhibiting good flexibility, making it resistant to breakage and adaptable to the natural curvature of the nail during wear. Materials such as PMMA and PVC have good chemical stability, resisting the corrosive effects of everyday chemicals such as detergents and cosmetics, ensuring the long-term stability of the nail art piece's color and structure. Bio-based materials such as PLA and PBS have good biocompatibility, reducing potential irritation to the wearer's skin or nails, improving wearing comfort and safety. Different material choices can also balance cost and performance to improve production economics.

[0049] Specifically, the thickness of the substrate layer 10 is greater than or equal to 0.1 mm and less than or equal to 0.5 mm. This ensures the comfort of the nail art piece during wear and its durability in daily use. Too thin a layer may result in insufficient strength, while too thick a layer may affect wearing comfort and natural appearance.

[0050] In this embodiment, the nail art piece also includes a connecting layer, which is disposed on the side of the substrate layer 10 away from the adhesive layer 20. The connecting layer is used to bond with the human nail. With this structural arrangement, the connecting layer enables rapid bonding between the nail art piece and the human nail, simplifying the nail art piece application process and allowing users to easily and quickly complete their manicure.

[0051] Specifically, during the manufacturing process of nail art pieces, when the protective layer 40 is UV-cured, the UV curing energy is greater than or equal to 400 mJ / cm². 2 And less than or equal to 500 mJ / cm 2 In this way, appropriate UV energy (ultraviolet curing energy) can make the material structure of the nail art more compact, enhance its hardness and chemical stability, prevent delamination and cracking, and thus significantly improve its abrasion resistance and resistance to chemical substances (such as detergents and greases), extending its lifespan. Precise energy control during the UV curing process is also key to achieving a 30% mirror finish on the decorative layer. Too low an energy may result in incomplete curing, affecting gloss; while too high an energy may damage the fine structure of the decorative layer. 400-500 mJ / cm² 2The UV energy range helps protect the decorative layer 30 while ensuring that the protective layer 40 reaches the ideal curing state, exhibiting the best mirror effect. In experiments with different UV curing energies, 400-500 mJ / cm²... 2 The UV energy range effectively prevents delamination and cracking of nail art. Specific data is shown in the table below:

[0052]

[0053] Specifically, according to the table above, when UV curing the protective layer 40, the UV curing energy is greater than or equal to 400 mJ / cm². 2 And less than or equal to 500 mJ / cm 2 The product performed well at that time. When the UV curing energy was less than 400 mJ / cm², the product showed good performance. 2 At that time, nail polish pieces performed worse than UV-cured polish with an energy of 400 mJ / cm² in terms of delamination and cracking. 2 And less than or equal to 500 mJ / cm 2 The situation.

[0054] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects: By adding a specific urea-acrylic resin component to the UV base coat, the bonding force between it and the decorative powder is enhanced. Furthermore, the UV top coat contains components that can react with the components in the UV base coat, achieving chemical bonding between the base coat, decorative layer (magic mirror powder), and top coat. This significantly enhances the interlayer bonding force and avoids delamination during application. By optimizing material selection, precisely controlling the thickness of each layer and the particle size of the powder structure, and rationally setting the interlayer components, the technical problem of easy delamination in traditional nail art pieces is effectively solved, further improving the aesthetics, comfort, and durability of the nail art pieces. Moreover, the addition of high-strength, high-toughness materials to the top coat, cured under UV light, effectively enhances the hardness of the entire nail art piece, improves its resistance to scratches and impacts, extends its service life, and enhances the overall structural stability of the product.

[0055] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0056] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0057] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0058] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0059] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0060] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A nail sheet, characterized by, include: A substrate layer (10) is provided in a manner adapted to the surface of a human fingernail; An adhesive layer (20), a decorative layer (30), and a protective layer (40) are provided, wherein the substrate layer (10), the adhesive layer (20), the decorative layer (30), and the protective layer (40) are stacked sequentially; the adhesive layer (20) contains urea-acrylic resin to bond the adhesive layer (20) and the decorative layer (30) together; wherein the decorative layer (30) is formed by laying a powder structure.

2. The nail plate according to claim 1, characterized in that The thickness of the adhesive layer (20) is greater than or equal to 20 μm and less than or equal to 30 μm.

3. The nail plate according to claim 1, characterized in that The thickness of the decorative layer (30) is greater than or equal to 5 μm and less than or equal to 10 μm.

4. The nail plate according to claim 1, wherein The thickness of the protective layer (40) is greater than or equal to 30 μm and less than or equal to 40 μm.

5. The nail plate according to claim 1, wherein The powder structure comprises at least two titanium dioxide layers (31), at least two silicon dioxide layers (32), and a mica layer (33). One of the at least two silicon dioxide layers (32) is located on one side of the mica layer (33), and the other is located on the other side of the mica layer (33). One of the at least two titanium dioxide layers (31) is located on one side of the at least two silicon dioxide layers (32) away from the mica layer (33), and the other is located on the other side of the at least two silicon dioxide layers (32) away from the mica layer (33); and / or, The maximum particle size of the powder structure is greater than or equal to 0.01 mm and less than or equal to 0.1 mm.

6. The nail plate according to claim 1, wherein The substrate layer (10) is made of any one of acrylonitrile-butadiene-styrene copolymer, polymethyl methacrylate, polycarbonate, polylactic acid, polyvinyl chloride, acrylonitrile-styrene copolymer, and polybutylene succinate; and / or, The thickness of the substrate layer (10) is greater than or equal to 0.1 mm and less than or equal to 0.5 mm.

7. The nail plate according to claim 1, wherein The nail art pieces also include: A connecting layer is disposed on the side of the substrate layer (10) away from the adhesive layer (20), the connecting layer being used to bond with a human nail.

Images