JP7645953B2 - Nail treatment method - Google Patents

Description

The present invention relates to a nail treatment method using a gel nail agent.

In addition to nail polish, gel nails, which are applied by applying a gel nail agent containing a photocurable resin, are also known as methods for decorating fingernails and toenails. Hardened gel nail agents are harder and less prone to scratches than lacquer enamel such as nail polish. As a result, gel nails are widely popular because they can maintain their luster and color for a long time, help protect the nails, and provide satisfaction with beautiful nails.

For example, Patent Document 1 discloses a general method for applying gel nails. Usually, after adjusting the shape of the surface and tip of the nail, the base gel, color gel, and top gel are applied and cured with light repeatedly in that order. It also discloses that when applying a new design of gel nail, for example, several weeks after the previous gel nail application, the previous gel nail should be completely removed so that it does not remain on the surface of the nail.

JP 2017-93966 A

However, as time passes since your last gel nail treatment, the gel nail can easily peel off from the surface of your nail, and gaps can appear between the nail and the gel nail. This can be problematic not only when the gel nail comes off, but also when there are small, invisible gaps that can easily let in dirt, bacteria, etc.

The present invention was made in consideration of these circumstances, and its purpose is to provide a new nail treatment method that achieves at least one of the following: preventing the gel nail from peeling off, keeping nails with gel nails clean, and making it easier to perform hand-work and enjoy gel nails on an ongoing basis.

The solution of the present invention to achieve the above object is a nail application method using a gel nail agent containing a photocurable resin, in which a nail decoration is applied to the surface of a nail that extends beyond the tip of the finger, and the back side of the nail has a nail back portion where the nail is exposed further to the tip side than the tip of the finger, and includes a repair process in which at least a part of the nail decoration is removed and a nail application containing a gel nail agent is performed on the front side of the nail, and a nail back preparation process in which a part of the tip side of the nail back portion is removed, and in the nail back preparation process, a laminated surface is formed on the back side of the nail where the nail decoration extends further to the tip side than the nail, a hardened layer is formed on the laminated surface, and the nail is covered with the hardened layer from the front side to the back side.

The present invention makes it possible to continue enjoying gel nails while keeping nails clean.

1 is an explanatory diagram showing an example of a nail to which a nail treatment method according to an embodiment of the present invention is applied; FIG. 2 is a cross-sectional view showing a schematic configuration of the claw shown in FIG. 1 . FIG. 4 is a cross-sectional view showing a schematic view of the nail after a length adjusting step in the nail treatment method. FIG. 4 is an explanatory diagram of the nail shown in FIG. 3 as viewed from the fingertip side. FIG. 4 is an explanatory diagram showing a nail back preparation step in the nail treatment method. FIG. 4 is a cross-sectional view showing a schematic configuration of the nail in the nail back preparation step. FIG. 2 is an explanatory diagram showing the nail after the nail-bottom preparation step as viewed from the nail-bottom side. FIG. 2 is a cross-sectional view showing a schematic configuration of the nail after the nail back preparation step is performed. FIG. 2 is an explanatory diagram showing one step of the nail back treatment process in the nail treatment method, as viewed from the nail back side. FIG. 10 is an explanatory view showing the next step of FIG. 9 as viewed from the back side of the nail. FIG. 11 is a cross-sectional view showing a schematic configuration of the claw shown in FIG. 10 . FIG. 11 is an explanatory view showing the next step of FIG. 10 as viewed from the back side of the nail. FIG. 2 is a cross-sectional view showing a schematic configuration of the nail after the nail bottom treatment process is performed.

The nail treatment method according to the embodiment of the present invention will be described with reference to the drawings.

Figure 1 is an explanatory diagram showing an example of a nail 10 on which a nail treatment method according to an embodiment of the present invention is performed, and Figure 2 is a cross-sectional view showing a schematic configuration of the nail 10 shown in Figure 1.

In the following explanation, the nail plate, which is the part that is usually called the "nail", will be referred to as the natural nail 11, and the nail 10 will include both the natural nail 11, which is the person's own nail (nail plate) receiving the nail treatment, and the nail decoration part 12 that is applied to the surface of the natural nail 11 with gel nail agent.

The nail treatment method according to this embodiment uses a gel nail agent containing a photocurable resin, and a nail decoration part 12 is already provided on the surface of the natural nail 11. Then, when the nail design of the nail decoration part 12 is to be changed or when the natural nail 11 has grown out, the nail treatment method according to this embodiment is performed.

As shown in FIG. 1, for example, before treatment, the tip 101 of the nail 10 is longer than the tip (31) of the finger 30. As shown in FIG. 2, the back side of the nail 10 has a nail base 13, which is the back side of the natural nail 11, exposed further toward the tip side than the tip 31 of the finger 30. The surface of the natural nail 11 has a nail decoration part 12 that has been applied using a gel nail agent. As time has passed since the nail decoration part 12 was applied, the natural nail 11 has grown, and a part of the natural nail 11 is exposed between the base 102 and the nail decoration part 12.

The nail decoration part 12 is not limited to having a gently sloping mountain-like surface as shown in the figure, but may have a three-dimensional uneven shape, for example, with art using various decorative parts, etc.

(Length adjustment process)
The nail treatment method according to this embodiment includes a length adjustment step of adjusting the length of the nail 10. As shown in Fig. 2, the length of the nail 10 is adjusted by removing at least a portion of the nail 10 so that it becomes the length indicated by the length adjustment line A. The length adjustment is performed by adjusting the length and shape of the nail 10 using an adjustment tool such as a dedicated file called a file or emery board.

In this case, an adjustment tool is placed on the tip side of the nail 10 where the nail decoration 12 is provided, and both the natural nail 11 and the nail decoration 12 are filed away and removed along the length adjustment line A that intersects with the length of the finger 30.

Figure 3 is a cross-sectional view showing the nail 10 after the length adjustment process of the nail treatment method according to this embodiment, and Figure 4 is an explanatory diagram showing the nail 10 shown in Figure 3 as viewed from the fingertip side. As shown in the figure, by removing both the nail decoration 12 and the natural nail 11 in the length adjustment process, the tip portion 101 of the nail 10 shown in Figure 1 is removed, and as shown in Figures 3 and 4, a laminated end surface 14 is formed in which the nail decoration 12 and the natural nail 11 appear to be laminated.

(Repair process)
Next, at least a part of the nail decoration 12 provided on the surface of the natural nail 11 is removed, and a nail treatment including a gel nail agent is performed on the surface side of the nail 10 (repair process). The nail decoration 12 is formed by forming a color layer, which is the main part of the gel nail design, on a base layer using a base gel, which is a gel nail agent containing a photocurable resin and is also called a clear gel, and then providing a top coat layer by applying and curing a clear gel (also called a top gel) on the color layer.

In the repair process, most of the base layer of the nail decoration 12 is left on the natural nail 11, and the color layer and top coat layer are removed to form a nail decoration 12 with a new design. These layers are removed using various cutting tools called nail machines, emery boards, etc. Note that the top coat layer is made of the same clear gel as the base layer, so it may be left on the natural nail 11. By leaving the base layer on the natural nail 11, there is no risk of the nail 11 coming into contact with the cutting tool or the natural nail 11 becoming thin, and it is possible to change the design without damaging the natural nail 11.

The repair process also includes a process of applying gel nail agent to cover the laminated end surface 14 formed in the length adjustment process, and curing the gel nail agent by irradiating it with light of a specific wavelength using a dedicated UV light or LED light. The gel nail agent may be either clear gel or color gel, or both. By covering the laminated end surface 14 with gel nail agent and curing it with light, the laminated end surface 14 can be protected, and it is possible to prevent a gap from forming between the natural nail 11 and the nail decoration part 12, and to prevent the nail decoration part 12 from peeling off from the natural nail 11. This makes it difficult for dirt to adhere to the tip side of the nail 10, making it possible to keep the fingertips clean.

Gel nail agents come in hard and soft gels, which differ in hardness, but any gel nail agent containing a photocurable resin may be used in the method of the present invention. To lengthen the nail 10, an artificial nail such as a nail tip may be attached, in which case the above treatment can be performed on the natural nail 11 including the attached artificial nail. It goes without saying that the method of the present invention can be used not only on fingernails 10 but also on toenails in the same way.

(Nail back preparation process)
FIG. 5 is an explanatory diagram showing the nail bottom preparation step in the nail treatment method according to this embodiment, FIG. 6 is a cross-sectional view showing the nail 10 in the nail bottom preparation step, FIG. 7 is an explanatory diagram showing the nail 10 after the nail bottom preparation step as viewed from the nail bottom side, and FIG. 8 is a cross-sectional view showing the nail 10 after the nail bottom preparation step.

In the nail treatment method according to the exemplary embodiment, the repair process is followed by a nail bottom preparation process in which the tip side of the nail bottom 13 is filed. In this nail bottom preparation process, the nail bottom 13 is removed along a back file line B that is approximately parallel to the length of the finger 30, as shown in FIG. 6.

In the nail back preparation process, first, various cutting tools called nail machines are applied to the back of the nail (nail back portion 13) at the tip 101 of the nail 10 to scrape off a part of the nail back portion 13. Next, as shown in FIG. 5, a back scraping tool 40 such as a special file called a file or emery board is applied to the nail back portion 13 side to scrape off a part of the nail back portion 13 along the back scraping line B. At this time, it is preferable to scrape off the back scraping tool 40 by placing it directly under the nail back portion 13 so that the unevenness caused by the nail machine on the surface of the nail back portion 13 is smoothed.

As a result, as shown in Figures 7 and 8, when the nail 10 is viewed from the pad side of the finger, the nail decoration 12 appears to extend further toward the tip than the natural nail 11, forming a layered surface 15 where the natural nail 11 and the nail decoration 12 are layered. The nail bottom preparation process can be used as a preparation process for the subsequent nail bottom treatment process, and the layered surface 15 can be provided as a treatment surface.

It is preferable that such a nail back preparation process is performed after the length adjustment process. It is also preferable that the nail back preparation process is performed after the repair process. However, such a nail back preparation process may be performed in parallel with the repair process or during the repair process.

(Nail back treatment process)
Figures 9 to 13 show the nail bottom treatment process of the nail treatment method according to this embodiment, with Figure 9 being an explanatory diagram showing one step of the nail bottom treatment process as viewed from the underside of the nail, Figure 10 being an explanatory diagram showing the next step of Figure 9 as viewed from the underside of the nail, Figure 11 being a cross-sectional view showing typically the nail bottom portion 13 shown in Figure 10, Figure 12 being an explanatory diagram showing the next step of Figure 10 as viewed from the underside of the nail, and Figure 13 being a cross-sectional view showing typically the nail 10 after the nail bottom treatment process has been completed.

In the nail treatment method according to this embodiment, after the nail bottom preparation process, nail treatment is performed on the nail bottom portion 13 to form the nail bottom portion 20 (nail bottom treatment process).

As shown in FIG. 9, nail glue 211 is applied to at least the tip side of the underside of the nail 13 with a brush 50, and then hardened with an activator. The brush 50 can be the brush that comes with the container of nail glue 211.

At this time, the nail glue 211 is applied so as to cover the entire laminated surface 15 on the tip side of the nail base 13. Also, the nail glue 211 is applied from the tip 31 of the finger 30 toward the tip of the nail base 13 so as not to adhere to the tip 31 of the finger 30, leaving a portion of the natural nail 11 exposed.

For the nail glue 211, a transparent adhesive commonly referred to as nail glue, which is used when attaching nail tips (artificial nails or false nails) to natural nails, can be used. In addition, an activator (curing accelerator) is sprayed onto the nail glue 211 in order to shorten the curing time. A mist type activator is preferable. By using an activator in combination, heat generation by the nail glue 211 can be suppressed and the nail glue 211 can be cured in a short time.

For example, a transparent gel adhesive containing 2-ethyl cyanoacrylate, polymethyl methacrylate, and hydroquinone can be suitably used as the nail glue 211. A specific example of the nail glue 211 is "Nail Art Glue (NAG-1) manufactured by Beauty Nailer Co., Ltd.", and a specific example of the activator is "NFS NEO Gel Activator manufactured by TAT Co., Ltd.".

The nail glue 211 hardens to form a transparent clear layer 21 on the underside of the nail 13. As a result, as shown in Figures 10 and 11, a underside nail part 20 made of the clear layer 21 can be formed so as to cover the laminated surface 15 formed on the underside of the nail 13 by the underside preparation process. As the treatment is performed so that the nail glue 211 does not adhere to the tip 31 of the finger 30, a small gap is provided between the underside nail part 20 and the tip 31 of the finger 30, and an exposed part (non-treated part) G is provided in which the underside of the natural nail 11 is exposed.

The nail glue 211 is not limited to the above-mentioned type as long as it is a transparent gel adhesive, and the activator is not limited to the above-mentioned type as long as it accelerates the hardening of the nail glue 211.

In addition, the nail back treatment process is not limited to using nail glue 211, etc., and may be performed by applying a gel nail agent to the nail back portion 13 and curing it by light irradiation to form the nail back nail portion 20. For example, a clear gel may be applied with a brush 50 to cover the layered surface 15 of the nail back portion 13 and not adhere to the tip portion 31 of the finger 30, and then cured with light to form the clear layer 21 and the non-treatment portion G. The clear gel is a transparent gel nail agent containing a light-curable resin, and can be cured to form the transparent clear layer 21. Alternatively, instead of the clear layer 21, a color gel or a mixed gel containing powder or micro-particles may be applied as the gel nail agent and cured by light irradiation to form a color layer as the nail back nail portion 20.

Furthermore, as shown in Figs. 12 and 13, a color layer 22 may be provided on the clear layer 21 as the back of the nail nail part 20. That is, the back of the nail treatment process may include a process of applying a transparent clear gel as a gel nail agent and hardening it by light irradiation to form the clear layer 21 of the back of the nail nail part 20, and a process of applying a color gel or a mixed gel containing powder or micro-particles as a gel nail agent and hardening it by light irradiation to form the color layer 22 of the back of the nail nail part 20. When forming the color layer 22, a small gap is provided between the color layer 22 (back of the nail nail part 20) and the tip 31 of the finger 30 to provide an exposed part G where the natural nail 11 is exposed.

By forming the underside nail part 20 on the underside nail part 13, the underside nail part 13, which extends longer than the tip part 31 of the finger 30, can be made to look beautiful and the underside nail part 13 can be protected and kept clean. Since there is an exposed part G between the underside nail part 20 and the tip part 31 of the finger 30, no burden is placed on the finger 30 not only during but also after the treatment, allowing the user to enjoy gel nails comfortably for a long period of time.

In addition, the underside of the nail treatment process may involve forming only the clear layer 21, or only the color layer 22. Therefore, the underside of the nail part 20 may have a single-layer structure consisting of either the clear layer 21 or the color layer 22, or may have a multi-layer structure including the clear layer 21 and the color layer 22.

By carrying out the treatment as described above, both the laminated end surface 14 of the tip 101 of the nail 10 and the laminated surface 15 of the nail bottom 13 are covered with a hardened layer and integrated together, making it difficult for the nail decoration 12 to peel off from the natural nail 11 and preventing gaps from forming between the natural nail 11 and the nail decoration 12. This makes it difficult for dirt to get in, making it possible to maintain the cleanliness of the treated nail 10 for a long period of time. As a result, it becomes possible to continuously enjoy gel nails while growing the nail 10 hygienically.

In addition, a laminated surface 15 is provided on the underside of the nail 13 in a nail preparation process prior to the underside treatment process, and the thickness of the nail 10 becomes thinner toward the tip side. This makes it easier to perform manual tasks even with a long nail 10, and allows the user to comfortably live daily life with their beautiful nail 10.

The technical scope of the present invention is not to be interpreted solely based on the above-described embodiment, but is based on the claims. The technical scope of the present invention also includes all modifications that are equivalent in meaning to and within the scope of the claims.

The present invention can be suitably used as a method for applying gel nails to decorate nails.

10 Nail 101 Tip 102 Nail base 11 Natural nail 12 Nail decoration part 13 Nail back part 14 Laminated end surface 15 Laminated surface 20 Nail back nail part 21 Clear layer 211 Nail glue 22 Color layer 30 Finger 31 Tip 40 Back filing tool 50 Brush A Length adjustment line B Back filing line G Exposed part (non-treatment part)

Claims (5)

A nail treatment method using a gel nail agent containing a photocurable resin,
A nail decoration part is provided on a surface of a nail that extends longer than a tip of a finger, and a back side of the nail has a nail back part where the nail is exposed on a tip side of the tip of the finger,
a repair process in which at least a part of the nail decoration is removed and a nail treatment including a gel nail agent is performed on the surface side of the nail;
and a nail bottom preparation step of filing the tip side of the nail bottom portion,
In the nail back preparation step, a layered surface is formed on the nail back portion, on which the nail decoration portion extends toward the tip side of the nail,
A nail application method comprising forming a hardened layer on the laminated surface and covering the nail from the front side to the back side with the hardened layer. The nail treatment method according to claim 1,
The length adjusting step further includes removing a tip end side of the nail to adjust the length of the nail,
The nail treatment method, wherein the repair step includes a step of applying gel nail agent to cover the tip portion of the nail adjusted in the length adjustment step, and curing the gel nail agent by irradiating the gel nail agent with light. The nail treatment method according to claim 1,
The nail treatment method further comprises a nail bottom treatment step of performing nail treatment on the nail bottom part after the nail bottom preparation step to form a nail bottom part covered with a hardened layer. The nail treatment method according to claim 3,
The nail treatment method is characterized in that in the nail bottom treatment step, the nail bottom nail part is formed at least on the tip side of the nail bottom part, and the laminated surface is covered with the nail bottom nail part. The nail treatment method according to claim 3 or 4,
The nail treatment method is characterized in that in the underside of the nail treatment step, an exposed portion is provided between the underside of the nail portion and the tip of the finger, in which the patient's own nail, which is longer than the tip of the finger, is exposed.

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