Artificial nail and manufacturing method thereof

Abstract

The artificial nail includes: an artificial nail body having a shape corresponding to a shape of at least a portion of a natural nail and including an upper surface configured to be away from a surface of the natural nail and a lower surface configured to face the surface of the natural nail; and an adhesive member disposed on a first surface of a lower surface of the artificial nail body. The lower surface of the artificial nail body includes a first surface and a second surface, the first surface overlaps the natural nail when attached to the surface of the natural nail, the second surface is different from the first surface, and at least a portion of the first surface has a first roughness greater than a roughness of the second surface.

Description

[0001] Cross-reference to related applications This invention claims priority and benefit to U.S. Patent Application No. 18 / 244,310, filed September 11, 2023, the entire contents of which are incorporated herein by reference as if fully set forth herein. Technical Field

[0002] The embodiments of the present invention generally relate to an artificial nail, and more specifically, to an artificial nail comprising an adhesive member disposed on the surface in contact with a natural nail, and a method thereof for manufacturing the same. Background Technology

[0003] In the field of hand or foot decoration, decorative nail accessories are known to be made of thin molded plastic components typically manufactured in the shape of fingernails or toenails.

[0004] Traditional artificial nails are made from materials such as synthetic resin in a predetermined shape, and are typically applied by applying a liquid adhesive to the user's natural nail, which is then trimmed to the user's desired shape. However, because the liquid adhesive used to attach artificial nails bonds the artificial nail body very firmly to the natural nail, only liquid removers can remove the nail body. Furthermore, because the liquid adhesives and these removers are chemicals that are harmful to the human body, it is preferable to avoid contact with the skin as much as possible during application.

[0005] To address this inconvenience, several methods are known, such as using double-sided tape to attach artificial nails to natural nails or applying adhesive to the underside of the artificial nail. However, these methods have several drawbacks, such as inferior bond strength compared to traditional liquid adhesives.

[0006] The information disclosed in this background section is only for understanding the background of the present invention concept, and therefore may contain information that does not constitute prior art. Summary of the Invention

[0007] The artificial nail constructed according to the principles and implementation of the present invention and its exemplary manufacturing method can improve the bonding strength of the liquid or gel-type adhesive member between the first surface disposed on the lower surface of the artificial nail and the natural nail body, because the first surface is surface-treated and its roughness is greater than that of the other surfaces of the lower surface of the artificial nail body.

[0008] Furthermore, the artificial nail constructed according to the principles and implementation of the present invention and its exemplary manufacturing method can optimize the amount and area of ​​liquid or gel-type adhesive members applied by forming a guide line pattern in a first surface, the guide line pattern defining the position where the adhesive members are applied.

[0009] Furthermore, the artificial nail constructed according to the principles and implementation of the present invention, and its exemplary manufacturing method, allows for safer attachment and detachment of the artificial nail body from the natural nail because the artificial nail body has a first end edge 11 and a second end edge 12. The first end edge 11 has a first thickness and overlaps with the natural nail, while the second end edge 12 is opposite to the first end edge 11 and has a second thickness different from the first thickness. That is, the artificial nail body has a shape that gradually thickens from the first end edge to the second end edge.

[0010] Additional features of the inventive concept will be set forth in the following description, and some features will be obvious from the description or may be learned by practicing the inventive concept.

[0011] According to one aspect of the invention, an artificial nail includes: an artificial nail body having a shape corresponding to at least a portion of a natural nail, and including an upper surface configured to be away from the surface of the natural nail and a lower surface configured to face the surface of the natural nail; and an adhesive member disposed on a first surface of the lower surface of the artificial nail body, wherein the lower surface of the artificial nail body includes a first surface overlapping the natural nail when attached to the surface of the natural nail and a second surface other than the first surface, at least a portion of the first surface having a first roughness greater than the roughness of the second surface.

[0012] The artificial nail body may also include a first end edge and a second end edge, the first end edge having a first thickness and overlapping at least a portion of the natural nail, the second end edge being opposite to the first end edge and having a second thickness different from the first thickness.

[0013] The second thickness can also be about four times thicker than the first thickness t1.

[0014] The first thickness may also be about 0.12 mm to 0.15 mm, and the second thickness t2 may be about 1 mm to 1.1 mm.

[0015] The artificial nail body may also have a shape that gradually thickens from the first edge to the second edge.

[0016] The artificial nail body can also be made of polymer materials with high gloss properties.

[0017] The upper surface can also be surface treated to have a second roughness greater than that of the second surface.

[0018] The second roughness of the upper surface may also be lower than the first roughness of the first surface of the lower surface.

[0019] The first surface of the lower surface may also include a predetermined pattern that has not undergone surface treatment and has the same roughness as the second surface.

[0020] The predetermined pattern may also include a pattern in the shape of numbers, and the predetermined pattern is formed by embossing or debossing.

[0021] The first surface of the lower surface may further include a guide line pattern, the guide line pattern being untreated and having a closed loop shape around the predetermined pattern, the guide line pattern having the same roughness as the second surface.

[0022] The guide line pattern can be formed by embossing or debossing.

[0023] The adhesive component may include a photocurable material.

[0024] The optical refractive index of the photocurable adhesive component can be substantially the same as that of the artificial nail body.

[0025] A method for manufacturing an artificial nail according to another aspect of the present invention includes the following steps: configuring at least one artificial nail body having a shape corresponding to the shape of at least a portion of the natural nail, and including an upper surface configured to be away from the surface of the natural nail and a lower surface configured to be facing the surface of the natural nail; applying a surface treatment to at least one surface of the artificial nail body; and providing an adhesive member on a first surface of the lower surface of the artificial nail body having a first roughness due to the surface treatment.

[0026] The surface treatment may further include a laser etching process, wherein the at least one etched surface of the artificial nail body includes the upper surface of the artificial nail body, and the etched upper surface has a second roughness that is lower than the first roughness of the etched first surface.

[0027] The manufacturing method may further include the following step: in the surface treatment process, forming a predetermined pattern inside the first surface, wherein the predetermined pattern is not surface treated.

[0028] The manufacturing method may further include the following steps: in the surface treatment process, forming a guide line pattern inside the first surface, the guide line pattern having a closed loop shape around the predetermined pattern, the guide line pattern being untreated.

[0029] The adhesive component may include a photocurable material.

[0030] The manufacturing method may further include the following steps: curing an adhesive component disposed between the artificial nail body and the natural nail, wherein the optical refractive index of the cured adhesive component is substantially the same as the optical refractive index of the artificial nail body.

[0031] It should be understood that the above general description and the following detailed description are exemplary and illustrative, and are intended to provide a further explanation of the claimed invention. Attached Figure Description

[0032] The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention. They illustrate exemplary embodiments of the invention and, together with the specification, serve to explain the inventive concept.

[0033] Figure 1A This is a perspective view of an embodiment of the upper surface of an artificial nail body constructed according to the principles of the present invention.

[0034] Figure 1B yes Figure 1A A three-dimensional view of the lower surface of the artificial nail body shown.

[0035] Figure 1C It is along Figure 1A A cross-sectional view of the artificial nail body taken by line I-I'.

[0036] Figure 2 It is shown Figures 1A to 1C The diagram shows a cross-sectional view of one embodiment in which the artificial nail body is attached to a natural nail via an adhesive component.

[0037] Figure 3A This is a perspective view of another embodiment of the upper surface of an artificial nail body constructed according to the principles of the present invention.

[0038] Figure 3B yes Figure 3A A three-dimensional view of the lower surface of the artificial nail body shown.

[0039] Figure 3C It is along Figure 3A A cross-sectional view of the artificial nail body taken by line I-I'.

[0040] Figure 4A This is a perspective view of the upper surface of an artificial nail body constructed according to the principles of the present invention.

[0041] Figure 4B yes Figure 4A A three-dimensional view of the lower surface of the artificial nail body shown.

[0042] Figure 4C It is along Figure 4AA cross-sectional view of the artificial nail body taken by line I-I'.

[0043] Figure 5 This is a flowchart illustrating a method for manufacturing artificial nails according to an embodiment of the present invention. Detailed Implementation

[0044] In the following description, numerous specific details are set forth for purposes of explanation in order to provide a thorough understanding of various embodiments or implementations of the invention. As used herein, “embodiment” and “implementation” are interchangeable terms and are non-limiting examples of apparatus or methods employing one or more inventive concepts disclosed herein. However, it will be apparent, however, that various embodiments may be practiced without these specific details or with one or more equivalent arrangements. In other instances, well-known structures and apparatuses are shown in block diagram form to avoid unnecessarily obscuring the various embodiments. Furthermore, the various embodiments may differ but are not necessarily exclusive. For example, the specific shapes, configurations, and features of the embodiments may be used or implemented in another embodiment without departing from the inventive concept.

[0045] Unless otherwise stated, the illustrated embodiments should be understood as exemplary features providing different details of some ways of implementing the inventive concept in practice. Therefore, unless otherwise stated, features, components, modules, layers, films, panels, regions and / or aspects (hereinafter individually or collectively referred to as “elements”) of various embodiments may be combined, separated, interchanged and / or rearranged in other ways without departing from the inventive concept.

[0046] The use of section lines and / or shading in the accompanying drawings is generally for the purpose of clarifying the boundaries between adjacent elements. Therefore, the presence or absence of section lines or shading does not indicate any preference or requirement for particular materials, material properties, dimensions, scale, commonalities between illustrated elements, and / or any other characteristics, properties, or properties of the elements, unless otherwise stated. Furthermore, in the accompanying drawings, the dimensions and relative dimensions of elements may be exaggerated for clarity and / or descriptive purposes. When embodiments can be implemented in different ways, the specific sequence of processes may be performed differently than the sequence described. For example, two consecutively described processes may be performed substantially simultaneously, or they may be performed in the reverse order of their description. Similarly, the same reference numerals denote the same elements.

[0047] When an element such as a layer is referred to as being "located," "connected to," or "coupled to" another element or layer, it may be directly located, connected to, or coupled to another element or layer, or there may be intermediate elements or layers. However, when an element or layer is referred to as being "directly located," "directly connected to," or "directly coupled to" another element or layer, there are no intermediate elements or layers. For this purpose, the term "connection" can refer to a physical, electrical, and / or fluid connection, with or without intermediate elements. Furthermore, the D1 axis, D2 axis, and D3 axis are not limited to the three axes in a Cartesian coordinate system, such as the x-axis, y-axis, and z-axis, and can be interpreted in a broader sense. For example, the D1 axis, D2 axis, and D3 axis can be perpendicular to each other, or can represent different directions that are not perpendicular to each other. For the purposes of this disclosure, "at least one of X, Y, and Z" and "at least one selected from the group consisting of X, Y, and Z" can be interpreted as only X, only Y, only Z, or any combination of two or more of X, Y, and Z, such as XYZ, XYY, YZ, and ZZ. As used herein, the term “and / or” includes any and all combinations of one or more of the listed items in relation to each other.

[0048] Although the terms “first,” “second,” etc., may be used herein to describe various types of elements, these elements should not be limited by these terms. These terms are used to distinguish one element from another. Therefore, without departing from the teachings of this disclosure, the first element discussed below may be referred to as the second element.

[0049] For descriptive purposes, this document may use spatial relative terms such as “beneath,” “below,” “under,” “lower,” “above,” “upper,” “over,” “higher,” “side” (e.g., in “sidewall”), etc., to describe the relationship between one element and another shown in the accompanying drawings. In addition to the orientations depicted in the drawings, spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacture. For example, if the device in the accompanying drawings is flipped, an element described as “below” or “below” other elements or features will be oriented “above” other elements or features. Thus, the term “below” can encompass both the orientations of “above” and “below.” Furthermore, the device may be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and therefore the spatial relative descriptors used herein will be interpreted accordingly.

[0050] The terminology used herein is for describing particular embodiments and is not intended to be limiting. As used herein, the singular forms “a”, “an”, and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. Furthermore, the terms “comprises,” “comprising,” “includes,” and / or “including” as used in this specification indicate the presence of the stated features, integers, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “approximately,” and other similar terms are used as approximate terms rather than terms of degree, and therefore to explain the inherent biases in measured, calculated, and / or provided values ​​that would be recognized by one of ordinary skill in the art.

[0051] Unless otherwise defined, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. Terms (as defined in a common dictionary) shall be interpreted as having the meaning consistent with their meaning in the relevant field context, and shall not be interpreted in an idealized or overly formal sense, unless expressly defined herein.

[0052] Figure 1A This is a perspective view of an embodiment of the upper surface of an artificial nail body constructed according to the principles of the present invention. Figure 1B yes Figure 1A A three-dimensional view of the lower surface of the artificial nail body is shown, and Figure 1C It is along Figure 1A A cross-sectional view of the artificial nail body taken by line I-I'. Additionally, Figure 2 It is shown Figures 1A to 1C The diagram shows a cross-sectional view of an embodiment in which the artificial nail body is attached to a natural nail via an adhesive component.

[0053] Figure 1A , Figure 1B , Figure 1C and Figure 2 An artificial nail 10 according to a first embodiment of the present invention is shown. The term "artificial nail" may include, but is not limited to, a full-coverage nail intended to be applied to the entire surface of a user's natural nail (e.g., fingernail or toenail), a nail extension intended to be applied to at least a portion of a user's natural nail, or a "nail plate," etc.

[0054] Reference Figure 1A , Figure 1B , Figure 1C and Figure 2According to this embodiment, the artificial nail 10 is bent at a predetermined curvature similar to that of a natural nail 40, and includes an artificial nail body 20 having a concave lower surface 24 and an adhesive member 30 disposed on a first surface 241 of the lower surface 24 of the artificial nail body 20.

[0055] Specifically, according to one embodiment, the lower surface 24 of the artificial nail body 20 includes a first surface 241 overlapping the natural nail 40, and the first surface is surface-treated (e.g., laser-etched) such that the surface roughness of the first surface is greater than that of the other surfaces of the lower surface. Therefore, the adhesive strength of the adhesive member 40 (e.g., a liquid or gel-type adhesive material) disposed between the first surface and the natural nail is improved.

[0056] like Figure 1A , Figure 1B , Figure 1C and Figure 2 As shown, the artificial nail 10 may include an artificial nail body 20 whose shape corresponds to at least a portion of the natural nail 40. The artificial nail body 20 may be designed to fully cover the nail, a partial artificial nail portion, and / or an artificial nail plate.

[0057] The artificial nail body 20 according to the embodiment can be formed from a polymer material having substantially high gloss properties.

[0058] For example, the artificial nail body 20 can be made from a combination of acrylonitrile-butadiene-styrene (ABS) plastic and polycarbonate. Alternatively, the artificial nail body 20 can also be made from any similar plastic material commonly used in the manufacture of artificial nails, such as ABS resin, nylon, terephthalate acetate, vinyl acetate, polycarbonate, polyvinyl chloride, etc.

[0059] Examples of suitable rigid materials for the artificial nail body 20 may include: Styrolux.RTM.684D (SBC), a styrene-butadiene block copolymer manufactured by BASF AG, Germany; Cyro. RTM. R40 (acrylic), an acrylic multipolymer manufactured by Cyro Corporation, Rockaway, New Jersey, USA; Lexane KR01 (PC) (trade name), a polycarbonate manufactured by GE Plastics Group; K-resin. RTM. (SBC), a styrene-butadiene copolymer manufactured by Chevron Phillips Chemical Company; TP-UXS (MMBS) (trade name), a methyl methacrylate-butadiene-styrene terpolymer manufactured by Tokyo Electric Chemical Industry Co., Ltd., Japan; Starex. RTM. 5010 (ABS), a copolymer of acrylonitrile, butadiene, and styrene manufactured by Samsung Cheil Industries, Ltd., South Korea; Zylar® 220 (SMMC) and Nas® 30, a copolymer of styrene and methyl methacrylate produced by Novartis Chemicals; and Toyalac 920 (Clear ABS), a copolymer of acrylonitrile, butadiene, and styrene produced by Toray Resin Corporation.

[0060] The thickness of the artificial nail body 20 is preferably between about 0.1 and about 1.1 mm, but this thickness may vary depending on the application.

[0061] One embodiment of the present invention may be characterized in that the two ends of the artificial nail body 20 have different thicknesses.

[0062] The artificial nail body 20 may have a first edge 11 and a second edge 12. The first edge 11 has a first thickness t1 and overlaps with the natural nail 40. The second edge 12 is opposite to the first edge 11 and has a second thickness t2 that is different from the first thickness.

[0063] Specifically, the second thickness t2 can be about four times thicker than the first thickness t1, so that the user can more safely attach and detach the artificial nail body 20 from the natural nail 40.

[0064] In one embodiment, the first thickness t1 can be about 0.12 mm to 0.15 mm, and the second thickness t2 can be about 1 mm to 1.1 mm. Therefore, the artificial nail body 20 can also have a shape that gradually thickens from the first end edge 11 to the second end edge 12.

[0065] Reference Figure 1A , Figure 1B and Figure 1CThe artificial nail body 20 has an upper surface 22 and a lower surface 24. The upper surface 22 is configured to be away from the surface of the user's natural nail 40, and the lower surface 24 is configured to be facing the upper surface of the user's natural nail 40.

[0066] like Figure 1B As shown, the lower surface 24 of the artificial nail body 20 includes a first surface 241 overlapping the natural nail 40 and a second surface 242 other than the first surface 241, and the first surface 241 is surface-treated (e.g., laser etching) to have a first roughness. Therefore, the first roughness of the first surface 241 can be greater than the roughness of the second surface 242. For example, the first roughness of the first surface can be obtained by, for example, laser etching, but embodiments of the invention are not limited thereto. Therefore, in addition to laser etching, sandblasting methods, etc., can be applied to the first surface to have a first roughness.

[0067] In addition, such as Figure 1C As shown, when the adhesive member 30 is applied to the first surface 241, the first roughness of the first surface 241 can improve the adhesive strength of the adhesive member 30, so the artificial nail body 20 can be more stably fixed to the natural nail 40.

[0068] On the other hand, such as Figure 1A As shown, no surface treatment process such as laser etching is performed on the upper surface 22 of the artificial nail body 20, so that the upper surface 22 can maintain high gloss. For example, neither the second surface 242 of the lower surface 24 nor the upper surface 22 of the artificial nail body 20 is laser etched, thus achieving high gloss characteristics.

[0069] In addition, such as Figure 1B As shown, a predetermined pattern 260 that has not been laser-etched can be formed in the first surface 241 of the lower surface 24.

[0070] For example, refer to Figure 1B The predetermined pattern 260 may include the shape of numbers, and such a number pattern 260 may function to distinguish multiple artificial nail bodies provided in the package. That is, in the case of a package having 10 different artificial nail bodies, a number pattern (e.g., 1 to 10) may also be formed in a defined area on the first surface 241 of each artificial nail body. The predetermined pattern 260 may be formed by embossing or debossing processes.

[0071] Reference Figure 1CThe adhesive member 30 disposed on the first surface 241 is configured to adhere to the upper surface of the natural nail 40 when applied thereto. For example, the adhesive member 30 may comprise, for example, a copolymer of acrylate and vinyl acetate formed from an aqueous acrylic copolymer emulsion. Furthermore, the adhesive member 30 may comprise a pressure-sensitive adhesive material and preferably further comprises a light-curing material. For example, the adhesive member 30 may comprise an acrylate oligomer having a gel-like viscosity.

[0072] Therefore, after the adhesive component 30 is applied to the first surface 241 having a first roughness, if the artificial nail body 20 and the adhesive component 30 are attached to the natural nail 40 by a predetermined pressure and the adhesive component 30 is cured by irradiation with light (e.g., UV light) for a predetermined time, the artificial nail body 20 can be more stably fixed to the natural nail 40.

[0073] Furthermore, one embodiment of the present invention may be characterized in that the optical refractive index of the photocurable adhesive member 30 is substantially the same as the optical refractive index of the artificial nail body 20. Therefore, when the adhesive member 30 is cured and the artificial nail body 20 is attached to the user's natural nail 40, the pattern 260 formed on the first surface 241 cannot be recognized by the user's eye.

[0074] Figure 3A This is a perspective view of another embodiment of the upper surface of an artificial nail body constructed according to the principles of the present invention. Figure 3B yes Figure 3A A three-dimensional view of the lower surface of the artificial nail body is shown, and Figure 3C It is along Figure 3A A cross-sectional view of the artificial nail body taken by line I-I'.

[0075] Reference Figure 3A , Figure 3B and Figure 3C , with the above Figures 1A to 1C Compared to the embodiment shown (first embodiment), Figures 3A to 3C In the second embodiment shown, with Figures 1A to 1C All elements in the first embodiment shown are labeled in the same way as the elements provided in the first embodiment. All elements are the same or similar elements.

[0076] Right now, Figures 3A to 3C The artificial nail 10 of the other embodiment shown (the second embodiment) is also bent at the same prescribed curvature as the natural nail 40, and includes an artificial nail body 20 having a concave lower surface 24 and an adhesive member 30 disposed on a first surface 241 of the lower surface 24 of the artificial nail body 20.

[0077] However, the difference between the first embodiment and the second embodiment is that, as Figure 3AAs shown, the upper surface 22' of the artificial nail body 20 is also laser-etched, thus having a second roughness. Therefore, the user can decorate the upper surface 22' of the artificial nail body 20 more precisely and securely.

[0078] However, in one embodiment, the second roughness of the upper surface 22' can be lower than Figure 3B The first roughness of the first surface 241 of the lower surface 24 of the artificial nail body shown.

[0079] Figure 4A This is a perspective view of the upper surface of an artificial nail body constructed according to the principles of the present invention. Figure 4B yes Figure 4A A perspective view of the lower surface of the artificial nail body shown. Figure 4C It is along Figure 4A A cross-sectional view of the artificial nail body taken by line I-I'.

[0080] Reference Figure 4A , Figure 4B and Figure 4C , with the above Figures 1A to 1C Compared to the embodiment shown (first embodiment), Figures 4A to 4C The third embodiment shown is in conjunction with Figures 1A to 1C All elements in the first embodiment shown are labeled in the same way as the elements provided in the first embodiment. All elements are the same or similar elements.

[0081] Right now, Figures 4A to 4C The artificial nail 10 of the third embodiment shown is also bent with the same predetermined curvature as the natural nail 40, and includes an artificial nail body 20 having a concave lower surface 24 and an adhesive member 30 disposed on a first surface 241 of the lower surface 24 of the artificial nail body 20.

[0082] However, the difference between the first and third embodiments lies in, for example Figure 4B As shown, a guide line pattern 270 is formed within the first surface 241' of the lower surface 24', defining the position where the adhesive member 30 is to be applied. Therefore, the amount and area of ​​the adhesive member applied can be optimized.

[0083] In this configuration, the guide line pattern 270 may have a closed-loop shape surrounding a predetermined pattern (e.g., a digit-shaped pattern) 260 formed in the first surface 241'. Since the guide line pattern 270 is not laser-etched in the same manner as the predetermined pattern 260, it can be identified as an area with high gloss characteristics. The guide line pattern 270 can be formed by embossing or debossing.

[0084] Furthermore, as described above, since the optical refractive index of the cured adhesive member 30 is substantially the same as that of the artificial nail body 20, when the adhesive member 30 is cured and the artificial nail body 20 is attached to the user's natural nail 40, the guide line pattern 270 formed in the first surface 241' cannot be recognized by the user's eyes.

[0085] Figure 5 This is a flowchart illustrating a method for manufacturing artificial nails according to an embodiment of the present invention. Specifically, in Figure 5 In the embodiment shown, laser etching is performed to give at least one surface of the artificial nail body a predetermined roughness; however, embodiments of the present invention are not limited thereto. Therefore, the predetermined roughness can also be obtained by using methods such as sandblasting instead of laser etching.

[0086] Reference Figure 5 The method for manufacturing artificial nails according to an embodiment of the present invention is as follows.

[0087] First, the method for manufacturing artificial nails may include: a step of configuring a plurality of artificial nail bodies (S510), a step of laser etching at least one surface of the artificial nail body (S520), and a step of setting an adhesive member on the surface having a predetermined roughness by laser etching (S530). Subsequently, by operating a further step including a step of attaching the artificial nail body to the natural nail (S540) and a step of curing the adhesive member disposed between the artificial nail member and the natural nail (S550), the artificial nail body can be stably attached to the user's natural nail.

[0088] Specifically, the step of configuring multiple artificial nail bodies (S510) includes configuring multiple artificial nail bodies 20, which have a size capable of covering natural nails, are bent at a predetermined curvature, and have a concave lower surface.

[0089] For example, the artificial nail body 20 can be made of ABS resin (acrylonitrile-butadiene-styrene) which is impact-resistant and flexible. Alternatively, if desired, the artificial nail body 20 can be made of at least one of polystyrene (PS) resin, SBS block resin, EVA (ethylene-vinyl acetate) resin, polycarbonate resin, and acrylic resin, in addition to ABS resin.

[0090] Furthermore, in the step of configuring the artificial nail body (S510), multiple artificial nail bodies 20 can be arranged so that the first surface 241 of the lower surface 24 of the multiple bodies 20 can be laser etched.

[0091] In this configuration, the thicknesses of the two ends of the artificial nail body 20 can differ from each other. The artificial nail body 20 may have a first end edge 11 and a second end edge 12. The first end edge 11 has a first thickness t1 and overlaps with the natural nail 40, while the second end edge 12 is opposite to the first end edge 11 and has a second thickness t2 different from the first thickness. Specifically, the second thickness t2 may be approximately four times thicker than the first thickness t1, as this allows the user to more safely attach and detach the artificial nail body 20 from the natural nail 40. In one embodiment, the first thickness t1 may be approximately 0.12 mm to 0.15 mm, and the second thickness t2 may be approximately 1 mm to 1.1 mm. Therefore, the shape of the artificial nail body 20 may also gradually thicken from the first end edge 11 to the second end edge 12.

[0092] Next, at least one surface of the artificial nail body can be laser etched (S520).

[0093] Specifically, the lower surface 24 of the artificial nail body 20 includes a first surface 241 overlapping the natural nail 40 and a second surface 242 other than the first surface 241, and the first surface 241 is laser-etched to have a first roughness. Therefore, the first roughness of the first surface 241 can be greater than the roughness of the second surface 242.

[0094] Optionally, the upper surface 22 of the artificial nail body 20 is also laser-etched to have a second roughness. Therefore, the user can decorate the upper surface 22 of the artificial nail body 20 more precisely and consistently. However, in this embodiment, the roughness of the second roughness of the upper surface 22 is lower than the roughness of the first surface 241 of the lower surface 24 of the artificial nail body.

[0095] In one embodiment, during the laser etching process (S520), a further step may be performed to form a predetermined pattern 260 that has not been laser-etched within the first surface 241 of the lower surface 24.

[0096] For example, refer to Figure 1B The predetermined pattern 260 may include numerical shapes, and such numerical pattern 260 may perform the function of distinguishing multiple artificial nail bodies provided in the packaging. The predetermined pattern 260 may be formed by embossing or debossing.

[0097] Furthermore, in this embodiment, during the laser etching process (S520), a step of forming a guide line pattern 270 defining the location where the adhesive member 30 is applied can be further performed. Therefore, the amount and area of ​​the adhesive member applied can be optimized.

[0098] For example, refer to Figure 4BThe guide line pattern 270 may have a closed-loop shape surrounding a predetermined pattern (e.g., a pattern of numbers) 260 formed in the first surface 241. Because the guide line pattern 270 is not laser-etched in the same manner as the predetermined pattern 260, the guide line pattern 270 can be identified as an area with high gloss characteristics. The guide line pattern 270 may be formed by embossing or debossing.

[0099] After manufacturing the artificial nail body 20 by performing the above steps, a step (S530) can be performed to apply a liquid or gel-type adhesive member 30 to a first surface having a first roughness.

[0100] When the adhesive member 30 is applied to the first surface 241, the first roughness of the first surface 241 increases the adhesive strength of the adhesive member 30, thus enabling the artificial nail body 20 to be more stably fixed to the natural nail 40.

[0101] An adhesive member (e.g., a liquid or gel-type adhesive material) 30 disposed on the first surface 241 is configured to adhere to the upper surface of the natural nail 40 when applied to the natural nail 40. For example, the adhesive member 30 may comprise, for example, a copolymer of acrylate and vinyl acetate formed from an aqueous acrylic copolymer emulsion. Furthermore, the adhesive member 30 may comprise a pressure-sensitive adhesive material and preferably further comprises a light-curing material. For example, the adhesive member 30 may comprise an acrylate oligomer in a gel-like state and having a certain viscosity.

[0102] Then, when the adhesive member 30 is applied to the first surface 241 having a first roughness, the artificial nail body 20 can be fixed to the user's natural nail by the steps of attaching the artificial nail to the natural nail (S540) and curing the adhesive member disposed between the artificial nail member and the natural nail (S550).

[0103] Specifically, after the adhesive member 30 is applied to the first surface 241 having a first roughness, when the artificial nail body 20 and the adhesive member 30 are attached to the natural nail 40 by a predetermined pressure (S540) and the adhesive member 30 is cured by irradiation with light (e.g., UV light) for a predetermined time (S550), the artificial nail body 20 can be more stably fixed to the natural nail 40.

[0104] Furthermore, embodiments of the present invention may be characterized in that the optical refractive index of the photocured adhesive member 30 is substantially the same as the optical refractive index of the artificial nail body 20. Therefore, when the adhesive member 30 is cured and the artificial nail body 20 is attached to the user's natural nail 40, the pattern (e.g., numeral pattern 260 and guide line pattern 270) formed in the first surface 241 will no longer be recognizable to the user's eye.

[0105] While certain exemplary embodiments and implementations have been described herein, other embodiments and modifications will be apparent from that description. Therefore, the inventive concept is not limited to such embodiments, but rather to the broader scope of the appended claims and various obvious modifications and equivalent arrangements that will be apparent to those skilled in the art.

Claims

1. An artificial nail, characterized in that, include: An artificial nail body having a shape corresponding to at least a portion of the shape of a natural nail, and including an upper surface configured to be away from the surface of the natural nail and a lower surface configured to be facing the surface of the natural nail; as well as An adhesive member disposed on the first surface of the lower surface of the artificial nail body. The lower surface of the artificial nail body includes a first surface that overlaps with the natural nail when attached to the surface of the natural nail, and a second surface other than the first surface. At least a portion of the first surface has a first roughness greater than that of the second surface.

2. The artificial nail according to claim 1, characterized in that, The artificial nail body includes a first end edge and a second end edge, the first end edge having a first thickness and overlapping at least a portion of the natural nail, the second end edge being opposite to the first end edge and having a second thickness different from the first thickness.

3. The artificial nail according to claim 2, characterized in that, The second thickness is more than four times thicker than the first thickness t1.

4. The artificial nail according to claim 2, characterized in that, The first thickness is about 0.12 mm to 0.15 mm, and the second thickness t2 is about 1 mm to 1.1 mm.

5. The artificial nail according to claim 2, characterized in that, The artificial nail body has a shape that gradually thickens from the first edge to the second edge.

6. The artificial nail according to claim 1, characterized in that, The artificial nail body is made of a polymer material with high gloss properties.

7. The artificial nail according to claim 1, characterized in that, The upper surface has a second roughness that is greater than that of the second surface through surface treatment.

8. The artificial nail according to claim 8, characterized in that, The second roughness of the upper surface is lower than the first roughness of the first surface of the lower surface.

9. The artificial nail according to claim 1, characterized in that, The first surface of the lower surface includes a predetermined pattern that has not undergone surface treatment and has the same roughness as the second surface.

10. The artificial nail according to claim 9, characterized in that, The predetermined pattern includes a pattern in the shape of numbers, and the predetermined pattern is formed by embossing or debossing.

11. The artificial nail according to claim 9, characterized in that, The first surface of the lower surface further includes a guide line pattern, the guide line pattern being untreated and having a closed loop shape around the predetermined pattern, the guide line pattern having the same roughness as the second surface.

12. The artificial nail according to claim 11, characterized in that, The guide line pattern is formed by embossing or debossing.

13. The artificial nail according to claim 1, characterized in that, The adhesive component includes a photocurable material.

14. The artificial nail according to claim 13, characterized in that, The optical refractive index of the photocurable adhesive component is substantially the same as that of the artificial nail body.

15. A method for manufacturing artificial nails, characterized in that, The method includes the following steps: The system comprises at least one artificial nail body having a shape corresponding to at least a portion of the shape of a natural nail, and including an upper surface configured to be away from the surface of the natural nail and a lower surface configured to be facing the surface of the natural nail. Apply a surface treatment to at least one surface of the artificial nail body; and An adhesive member is disposed on the lower surface of the artificial nail body on a first surface having a first roughness due to the surface treatment.

16. The method according to claim 15, characterized in that, The surface treatment includes a laser etching process, wherein the at least one etched surface of the artificial nail body includes the upper surface of the artificial nail body, and the etched upper surface has a second roughness that is lower than the first roughness of the etched first surface.

17. The method according to claim 15, characterized in that, Further steps include: In the surface treatment process, a predetermined pattern is formed inside the first surface, and the predetermined pattern is not surface treated.

18. The method according to claim 17, characterized in that, Further steps include: In the surface treatment process, a guide line pattern is formed inside the first surface. The guide line pattern has a closed loop shape around the predetermined pattern and the guide line pattern is not surface treated.

19. The method according to claim 15, characterized in that, The adhesive component includes a photocurable material.

20. The method according to claim 19, characterized in that, Further steps include: A bonding component that is cured between the artificial nail body and the natural nail. The optical refractive index of the cured adhesive component is substantially the same as that of the artificial nail body.

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