KR20090099453A - Artficial nail having soft back part and method for producing it - Google Patents

Abstract

An artificial nail manufacturing method is provided, which enables the soft rear to maintain shape of the artificial nail and removes boundary due to the boundary of the front and rear. An artificial nail manufacturing method comprises: an extrusion stage(S100) of performing injection molding the artificial nail shape out of plastics; a softener coating stage(S200) of applying a softener on the upper and lower surface of the rear of the artificial nail to make the rear softened; and a softener infiltration step(S300) of infiltrating the softener to the inside from the surface of the rear of the artificiality nail.

Description

Artificial nail having soft back part and its manufacturing method {Artficial Nail Having Soft Back Part And Method For Producing It}

The present invention relates to an artificial nail having a soft rear portion and a manufacturing method thereof.

In detail, the present invention relates to a method of manufacturing an artificial nail having a softer property than a front portion of an artificial nail, which is a portion attached to a natural nail, and an artificial nail thereof.

Artificial nails, commonly called nail tips, are made of synthetic resin materials such as nylon or acetate and are manufactured by injection molding. These artificial nails are attached to the user's fingernails to protect the nail bed while making the appearance of the wearer's hand look good, and to make the nails decorative with beautiful French nail design and attractive colors.

Conventional artificial nails are manufactured so that the entire nail is molded with the same material and provided with a rigidity for maintaining the shape of the nail, so that the rear portion of the artificial nail attached to the upper surface of the natural nail has a constant shape. Since it has a firmness for, it was difficult to attach to fit the curvature of the surface of the nail of various wearers.

In order to solve this problem, US 7,150,281 B2 has proposed a multi-layered artificial nail that can be applied to various nail sizes and shapes. US 7,150,281 B2 proposes a patent in which a rear portion of an artificial nail attached to a cuticle of a natural nail is formed of a material which is easily deformed. In other words, the front portion of the artificial nail formed of a polymer material as a single layer and the lower portion of the technology to combine the deformable layer through spray molding, double injection or manual (manual application) to form a material that is easily deformable Is proposing.

However, even when bonding a brittle layer to the polymer material of the artificial nail by spray molding, double injection or by hand, a bonding boundary remains and thus the layers are separated or have aesthetic problems.

In addition, US 7,150,281 B2 uses silicones, silicone derivatives, rubbers, etc. as examples of easily deformable materials, but when using these materials, artificial nails before wearing are difficult to maintain the shape of nails. Therefore, it is difficult to obtain the shape of the product that appeals to the user.

In order to solve the above problem, the present invention provides an artificial nail having a softer rear portion than the front portion, while the soft rear portion can maintain the shape of the artificial nail and has no boundary due to the boundary between the front portion and the rear portion or the multilayer. To provide an artificial nail.

According to one aspect of the present invention, by applying a softening agent such as a solvent, a plasticizer, or a mixture thereof to the surface of the artificial nail shape injection molded with the same material to soften the rear portion, the elastic portion and the softened rear portion are conventionally provided. As such, it is intended not to form a boundary with the front part generated by combining other materials such as double injection and spray molding. Also,

In addition, according to another aspect, by softening the rear portion of the artificial nail shape at the same time by applying a curing agent to the front portion to provide a more elastic artificial nail than the rear portion.

Moreover, according to another aspect, the softening agent, the plasticizer or a mixture thereof, by using heat, ultrasonic waves or high frequency, can be more effectively penetrated from the surface of the artificial nail into the inside, so that the rear part has more uniform softness and elasticity. To provide an artificial saw.

Furthermore, according to another aspect, it is intended to provide an artificial nail that improves the wearing comfort by gradually becoming thinner toward the end of the rear portion.

The present invention is to solve at least one of the above problems, in accordance with one aspect of the present invention, an injection molding step of injection molding artificial nail shape with plastic; And a softener applying step of applying a softener for softening the rear portion to be attached to the natural nail surface in the injection molded artificial nail shape to the upper, lower or upper and lower surfaces of the rear portion; And a softener penetrating step of penetrating the softener into the interior from the surface of the rear portion of the artificial nail shape, wherein the rear portion of the artificial nail shape is more elastic and softer than the front portion. One artificial nail manufacturing method is proposed.

Preferably, at least one of a plastic material for injection molding the artificial nail shape as a softener, a plasticizer or a mixture thereof is used in the artificial nail manufacturing method having a soft rear portion.

Preferably, in the aforementioned softener penetration step, any one or more of heat, ultrasonic waves, and high frequency waves are added to the application site to allow the softener to penetrate into the interior of the artificial nail-like surface.

Also preferably, the above-described artificial nail manufacturing method having a soft rear portion is a curing agent applying step of applying a curing agent to the upper, lower or upper and lower surfaces of the front portion to cure the front portion of the artificial nail shape before or after the softener penetration step. It further comprises.

More preferably, the above-described artificial nail manufacturing method having a soft rear portion further comprises a hardener penetrating step of penetrating the hardener into the interior from the front surface of the artificial nail shape. Here, the curing agent penetrating step is made at the same time as the softener penetrating step if the curing agent applying step is made before the softener penetrating step, and after the curing agent applying step if the curing agent applying step is made after the softener penetrating step.

Further preferably, the artificial nail shape injection molded in the injection molding step of the artificial nail manufacturing method having the soft rear portion described above is formed with a thick front portion and thinner rear portion toward the end.

Also preferably, the plastic material used in the injection molding step is polystyrene (PS) resin, ABS resin, SBS block resin, EVA resin or any one resin containing at least one or more.

According to another aspect of the present invention for solving at least one of the above problems, in the artificial nail that the back portion of the nail-shaped injection-molded plastic is attached to the natural nail surface, the rear portion is upper, lower or upper and lower surface An artificial nail having a soft rear portion is proposed, wherein the softener is applied and penetrated from the surface to the inside to have a higher softener component content than the front portion, and is more elastic and softer than the front portion.

Preferably, the softener described above is at least one of a solvent, plasticizer or mixtures thereof for the plastic material.

Also preferably, the front part of the artificial nail has a higher curing agent content than the rear part by applying a curing agent to the upper, lower or upper and lower surfaces and penetrating from the surface to the inside.

Furthermore, preferably, the front part of the artificial nail is formed to be thick and the rear part becomes thinner toward the end.

More preferably, the plastic material of the injection-molded artificial nail is polystyrene (PS) resin, ABS resin, SBS block resin, EVA resin or any one or more mixed resins containing at least one.

According to embodiments of the present invention, while providing an artificial nail having a softer rear portion than the front portion, the soft rear portion can maintain the shape of the artificial nail and does not form a boundary due to the front portion or the rear portion boundary or the multilayer. It is now possible to provide artificial nails.

In addition, according to other embodiments, by applying a softener to the surface of the artificial nail-shaped rear portion injection molded in the same material to soften the rear portion having a flexible and softened rear portion, other materials such as conventional double injection, spray molding By joining, it is possible to prevent the front part from forming a boundary.

In addition, according to other embodiments, by softening the rear portion of the artificial nail shape while applying a curing agent to the front portion, the rear portion can provide a much more elastic artificial nail than the front portion.

Furthermore, according to still another embodiment, the softener solvent, plasticizer or a mixture thereof is more effectively penetrated from the surface of the artificial nail into the interior using heat, ultrasonic waves or high frequency, so that the rear portion is more uniformly soft and elastic. It is now possible to provide nails.

Furthermore, according to other embodiments, to provide an artificial nail to improve the wearing comfort by gradually becoming thinner toward the end of the rear portion.

Hereinafter, embodiments of the present invention for achieving the above object are described with reference to the accompanying drawings. In describing the embodiments, the same names and symbols are used for the same components, and thus redundant descriptions thereof will be omitted below.

First, the artificial nail manufacturing method having a soft rear part of the present invention will be described with reference to the embodiment and the drawings.

1 is a cross-sectional view showing a wearing state of the artificial nail manufactured according to an embodiment of the present invention, Figure 2 is a cross-sectional shape of the artificial nail manufactured according to one embodiment of the present invention, Figure 3 A flowchart illustrating a method of manufacturing an artificial nail having a soft rear portion according to one embodiment of the present invention.

As shown in Figure 3, the artificial nail manufacturing method having a soft rear portion according to an embodiment of the present invention the following injection molding step (S100) and softener application step (S200) and softener penetration step (S300) It is made, including.

In the injection molding step (S100), the artificial nail shape 1 is molded by plastic. In general, the injection molding of the artificial nail shape (1) consisting of the back portion 20 to be attached to the front portion 10 and the natural nail (2) surface of the same material, preferably the front portion 10 and the rear portion ( Injection molding is performed so that 20) is integrally formed. Although not shown, in the case of forming a multilayer structure or other front multilayer structure as in US 7,150,281 with the same material, the softener penetrating step (S300) or thereafter, by applying heat to penetrate each other to the facing layer between the interlayer It is desirable to remove the boundary.

In a preferred embodiment, the plastics used for injection molding are selected from polystyrene (PS) resins, ABS resins (acrylonitrile butadiene styrene copolymers), SBS block resins (Styrene-Butadiene-Styrene Block Copolymer) and EVA resins (Ethylene Vinyl Acetate Copolymer). It is either resin or mixed resin containing at least one or more of them.

In the softener application step (S200), a softener for softening the rear portion 20 to be attached to the surface of the natural nail 2 in the injection molded artificial nail shape 1, the upper surface 22 and the lower surface 24 of the rear portion. Or on upper and lower surfaces 22 and 24. The application of the softener can be by spraying or painting. Preferably, when applying the softener, the surface to be applied is directed upward so that the softener penetrates into the surface.

The kind and concentration of the softener to be applied can be appropriately adjusted. Preferably, as the softener, at least one or a mixture of solvents, plasticizers and the like for the plastic material for injection molding the artificial nail shape 1 is used. Solvent is selected according to the type of plastic used as the injection molding material. As a plasticizer, organic compounds such as dioctyl phthalate (DOP) or dibutyl phthalate (DBP) are generally used, but the plasticizer is not limited thereto, and may be appropriately selected according to the type of plastic used as the injection molding material. have. Preferably, a plasticizer is selected that is excellent in its blending properties with the polymer of the plastic and yet softens the hardness of the plastic. More preferably, a plasticizer having a low generation of harmful substances such as environmental hormones can be selected.

In the softener penetrating step (S300), the softener penetrates into the interior from the surface of the rear portion 20 of the artificial nail shape (1). Penetration of the softener from the surface into the interior can occur naturally through diffusion, preferably in order to infiltrate the applied softener into the interior of the rear portion 20 of the artificial nail 1 Either one is applied to the softener application site or at least two or more methods are applied to the application site. When applying heat, the melting point of the plastic that is the material of the artificial nail 1 should be taken into account. That is, it is preferable to apply heat at a softening temperature which is a state before reaching the melting point of the plastic. Generally, plastics are in the range of about 150-300 ° C, more specifically, polystyrene resins at about 180-240 ° C, ABS resins at about 180-260 ° C, SBS resins at about 150-260 ° C, and EVA resins at 150-220 ° C. It melts at about ° C or becomes low in viscosity and almost melted. Therefore, it is preferable to apply heat so that the viscosity becomes soft, which is a state before the viscosity becomes low and close to melting. By applying heat, ultrasonic waves, high frequency, etc., the softener penetrates from the surface to the inside, so that the rear portion 20 of the artificial nail shape 1 is more elastic and softer than the front portion 10.

4A to 4C are flowcharts illustrating a method of manufacturing an artificial nail having a soft rear part according to another embodiment of the present invention.

As shown in Figure 4a to 4c, according to another embodiment of the present invention, it further comprises a curing agent applying step (S1200a, S1200b, S1200c) before or after the softener penetrating step (S300).

In one embodiment, the curing agent application step (S1200a, S1200b, S1200c) in the upper surface 12, the lower surface 14 of the front portion 10 to cure the front portion 10 of the artificial nail shape (1) ) Or a hardener is applied to the upper and lower surfaces 12 and 14. As a preferred embodiment after the curing agent application step (S1200a, S1200b, S1200c), as shown in Figures 4a to 4c, may further comprise a curing agent penetration step (S1300a, S1300b, S1300c), or simply applying a surface hardener By doing so, a separate artificial hardener penetration process may be omitted. The type and concentration of the curing agent can be appropriately selected and used according to the type of plastic.

As shown in Figure 4a, the curing agent application step (S1200a) may be made after the softener application step (S200), although not shown, may be made at the same time or made first with the softener application step (S200). Alternatively, as illustrated in FIG. 4C, the curing agent applying step S1200a may be performed after the softening agent penetrating step S300.

In a more preferred embodiment, as shown in Figure 4a to 4c, according to another embodiment of the present invention, it further comprises a curing agent penetrating step (S1300a, S1300b, S1300c).

In one embodiment, the curing agent penetrating step (S1300a, S1300b, S1300c) penetrates the curing agent from the surface of the front portion 10 of the artificial nail shape (1). Penetration of the hardener into the interior can occur either naturally by diffusion or by applying artificial methods to promote diffusion. In this case, diffusion can be made easier by using heat, ultrasonic waves, high frequency, or the like.

As shown in Figure 4a, the curing agent penetrating step (S1300a) may be made at the same time as the softener penetrating step (S300), as shown in Figure 4b, the curing agent penetrating step (S1300a) after the softener penetrating step (S300) Can be done on. Alternatively, as shown in Figure 4c, after the softener penetrating step (S300) may be a curing agent applying step (S1200a) and the curing agent penetrating step (S1300a). Preferably, when the curing agent applying step (S1200a) is performed before the softener penetrating step (S300), the softener penetrating step (S300) and the curing agent penetrating step (S1300a) are simultaneously performed as shown in Figure 4a.

In one embodiment, in the softener penetrating step (S300) in the case of applying at least one or more of the heat, ultrasonic wave, high frequency to the application site to penetrate the softener inside the artificial nail-like surface, as shown in Figure 4a The coating step (S1200a) is made before the softener penetrating step (S300) and the hardener penetrating step (S1300a) and the softener penetrating step (S300) are performed at the same time, or as shown in FIG. 4C, the hardener applying step (S1200a) is after the softener penetrating step (S300). Many other variations are possible.

In another embodiment, preferably, the artificial nail shape 1 injection molded in the injection molding step of the artificial nail manufacturing method having the soft rear portion described above, as shown in Figure 2, 10 is thick and the rear portion 20 is tapered toward the end 20a.

Next, with reference to the embodiment and the drawings with respect to the artificial nail having a soft rear portion which is another of the present invention.

1 is a cross-sectional view showing a wearing state of the artificial nail according to an embodiment of the present invention, Figure 2 is a cross-sectional shape of the artificial nail according to an embodiment of the present invention.

1 and 2, the artificial nail according to an embodiment of the present invention has a front portion 10 and a rear portion 20 directly connected to the front portion 10, the plastic injection molded will be. Preferably, the plastic used in the injection molding is any one of polystyrene (PS) resin, ABS resin (acrylonitrile butadiene styrene copolymer), SBS block resin (Styrene-Butadiene-Styrene Block Copolymer), EVA resin (Ethylene Vinyl Acetate Copolymer) Resin or a mixed resin containing at least one of them. The rear portion 20 of the artificial nail shape 1 is attached to the surface of the natural nail 2. Preferably, the front portion 10 and the rear portion 20 are injection molded integrally of the same material. In Fig. 2, the boundary a between the front part 10 and the rear part 20 is not a boundary by a combination of different materials of US 7,150,281, but is integrally injection molded with the same material to the surface of the natural nail 2. Boundaries to distinguish between parts that are attached and parts that are not. Preferably, the boundary a between the front part 10 and the rear part 20 is worn to match the boundary formed by the end of the natural nail 2 or the lower end of the natural nail and the finger tip. The rear end portion 20a of the artificial nail 1 faces toward the cuticle 3.

In addition, the rear portion 20 of the artificial nail 10 attached to the surface of the natural nail 2 has a softener applied to the upper surface 22, the lower surface 24, or the upper and lower surfaces 22 and 24, and is moved from the surface to the inside. By penetrating, it has a higher softener component content than the front portion 10. Thus, the rear portion 20 is more elastic and softer than the front portion 10.

Preferably, as the softening agent, at least one or a mixture of solvents, plasticizers and the like for the plastic material for injection molding the artificial nail shape 1 is used. Solvent is selected according to the type of plastic used as the injection molding material. As a plasticizer, organic compounds such as dioctyl phthalate (DOP) or dibutyl phthalate (DBP) are generally used, but the plasticizer is not limited thereto, and may be appropriately selected according to the type of plastic used as the injection molding material. And the concentration may also be appropriately selected. Preferably, a plasticizer is selected that is excellent in its blending properties with the polymer of the plastic and yet softens the hardness of the plastic.

Although not shown, in the case of forming a multilayer structure or other front multilayer structure as in US 7,150,281 with the same material, the injection molded material is integrally formed by removing the interlayer boundary by infiltrating each other into the facing layers by applying heat. It is likewise desirable to form artificial nails without interlayer boundaries.

In another preferred embodiment, the front portion 10 of the artificial nail 1 has a hardener applied to the upper surface 12, the lower surface 14 or the upper and lower surfaces 12, 14, thereby penetrating from the surface to the inside. To have a higher curing agent content than the rear portion 20. The type and concentration of hardener is appropriately selected depending on the material of the plastic used for injection molding.

In another embodiment, the injection molded artificial nail 1 is tapered as the front portion 10 is thicker and the rear portion 20 toward the end 20a, as shown in FIG. 2.

In the above, the present invention has been described in detail with reference to the accompanying drawings and embodiments, the accompanying drawings and the above embodiments are described by way of example to help those of ordinary skill in the art to understand the present invention. As such, the scope of the invention should be construed according to the invention set forth in the appended claims, which includes various modifications, alternatives, and equivalents by one of ordinary skill in the art.

1 is a cross-sectional view showing a wearing state of the artificial nail manufactured according to an embodiment of the present invention,

Figure 2 is a cross-sectional shape of the artificial nail manufactured according to an embodiment of the present invention,

3 is a flowchart illustrating a method of manufacturing an artificial nail having a soft rear part according to an embodiment of the present invention;

4A to 4C are flowcharts illustrating a method of manufacturing an artificial nail having a soft rear part according to another embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

1: artificial nail shape or artificial nail 2: natural nail

3: cuticle 10: front part

10a: front end 12: front upper surface

14: front lower surface 20: rear

20a: rear end 22: rear upper surface

24: rear lower surface

Claims (12)

An injection molding step of injection molding the artificial nail shape with plastic; And A softener applying step of applying a softener for softening the rear portion to be attached to the natural nail surface in the injection molded artificial nail shape on the upper, lower or upper and lower surfaces of the rear portion; And A softener penetrating step of penetrating the softener into the interior from the surface of the artificial nail-shaped rear part;  The artificial nail manufacturing method having a soft rear portion, characterized in that the rear portion of the artificial nail shape is more elastic and softer than the front portion. The method according to claim 1, And said softener is at least one of a solvent, a plasticizer, or a mixture of plastic materials for injection molding said artificial nail shape. The method according to claim 2, The method of claim 1, wherein the softener penetrates into the application site by applying any one or at least two of heat, ultrasonic waves, and high frequency to the application site. The method according to claim 2, And a curing agent applying step of applying a curing agent to the upper, lower, or upper and lower surfaces of the front portion to cure the artificial nail-shaped front portion before or after the softening agent penetrating step. Artificial nail manufacturing method. The method according to claim 4, It further comprises a curing agent penetrating step of penetrating the curing agent into the interior from the front surface of the artificial nail shape, The hardening agent penetrating step may be performed after the curing agent applying step when the curing agent applying step is performed at the same time as the softening agent penetrating step when the curing agent applying step is performed before the softener penetrating step, and when the curing agent applying step is performed after the softener penetrating step. Artificial nail manufacturing method having a rear portion of the. The method according to any one of claims 1 to 5, Artificial nail shape injection-molded in the injection molding step is a front nail is thick and the rear nail is a synthetic nail manufacturing method having a soft rear portion, characterized in that the thinner toward the end. The method according to any one of claims 1 to 5, The plastic material in the injection molding step is a synthetic material having a soft rear part, characterized in that the polystyrene (PS) resin, ABS resin, SBS block resin, any one resin of EVA resin or a mixed resin containing at least one or more. How to make nails. In the artificial nail which is attached to the surface of the natural nail nail-shaped injection molded plastic The rear part has a soft rear part which is characterized in that the softener is applied to the upper, lower or upper and lower surfaces to penetrate the inside from the surface to have a higher softener component content than the front part and is more elastic and softer than the front part. One artificial nail. The method according to claim 8, Wherein said softener is at least one of a solvent, a plasticizer, or a mixture thereof, of said plastic material. The method according to claim 9, An artificial nail having a soft rear portion, characterized in that the front portion of the artificial nail has a higher curing agent content than the rear portion by applying a hardener on the upper, lower or upper and lower surfaces and penetrates from the surface to the inside. The method according to any one of claims 8 to 10, An artificial nail having a soft rear portion, characterized in that the front portion of the artificial nail is thick and the rear portion becomes thinner toward the end. The method according to any one of claims 8 to 10, The plastic material of the injection-molded artificial nail is a polystyrene (PS) resin, ABS resin, SBS block resin, EVA resin having any one of a resin or at least one mixed resin comprising at least one or more comprising a soft rear portion Artificial nails.

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