KR20140103408A - Artifical Nail Including Bottom Surface of Three-Dimensional Structure and Manufacturing Method Thereof - Google Patents

Abstract

The present invention relates to an artificial nail having a substructure with three-dimensional effect and a method thereof. The artificial nail shows a three-dimensional effect of various patterns and colors when the artificial nail is attached to a finger nail while the outer surface of the artificial nail is smooth without irregularity. An intagliated part is formed at the bottom of the artificial nail directly attached to the nail plate of a finger nail, and various patterns or colors are expressed through the intagliated part. A layer of color is previously formed at the lower part of the artificial nail through a spray injection method, a pad printing method or a hydraulic transfer method, and then formed is a bonding layer with water soluble adhesives and double-sided adhesives surrounded thereto.

Description

 Technical Field [0001] The present invention relates to an artificial nail having a three-dimensional structure and a method for manufacturing the artificial nail,

The present invention relates to an artificial nail and a method of manufacturing the same. More particularly, the present invention relates to an artificial nail having a three-dimensional structure and a method of manufacturing the artificial nail.

Artificial fingernails are produced by injection molding using general plastic or thermoplastic plastic. These artificial nails are often used to protect the nail bed by attaching it to the nail when the nail is damaged or too weak, or to make the nail longer or better in shape. An artificial nail with a three-dimensional decoration has been developed to improve the aesthetics of the artificial nails and to improve the design.

Open No. 10-2010-0059108 entitled " Artificial nails having a polyhedral mosaic decoration and method of manufacturing thereof ", which is disclosed in, for example, June 4, 2010, The right triangular-shaped protrusion (2) is formed to give the artificial nails a three-dimensional feeling and a feeling of life.

Registered Patent No. 10-0370377 entitled " Artificial nails having three-dimensional decoration and method of manufacturing thereof ", registered on January 16, 2003, has a structure in which grooves 4 are formed on the upper surface of artificial nail 3 as shown in FIG. The decorative material (5, for example, artificial gemstones, gold dust, pearls and the like) is put into this, and then the upper surface is covered with the coating film 6 to give the artificial nail 3 a stereoscopic and lively decoration effect.

Registered Utility Model No. 20-0181072 registered on Feb. 24, 2000 "artificial nails formed with embossed and embossed" means that artificial nails (7) have various artificial nails (8) A protrusion 8a is formed on the upper surface of the nail 7 and a groove 8b having the same shape as the protrusion 8a is formed on the lower surface.

However, in such a conventional art, there is a problem that the protruding portion of the artificial nail attached to the nail falls off or is caught on the clothes because the component giving the three-dimensional feeling protrudes upward from the upper surface of the artificial nail. Therefore, it is required to develop an artificial nail which can express the three-dimensional feeling of various patterns and colors while the surface of artificial nails is smooth.

An object of the present invention is to provide an artificial fingernail having a three-dimensional effect that could not be realized with a synthetic fingernail having a smooth surface.

It is another object of the present invention to provide a method of manufacturing artificial fingernails having a steric effect.

In order to solve this problem, the artificial nail according to the present invention comprises a first end which is attached to the nail close to the nail, a second end which is attached to the end of the nail close to the nail, and an outer surface which is exposed when the artificial nail is attached to the nail And a lower surface directly attached to the nail plate of the nail, wherein the upper surface is a smooth surface, and the lower surface is formed with a depressed portion having a predetermined depth. A color layer is formed on the lower surface of the artificial nails by a spraying method, a pad printing method, or a water pressure transfer method. The adhesive layer is applied to the color layer. The adhesive layer may be a whole adhesion layer formed on the entire lower surface, It may be a structure in which an adhesive is formed and a double-sided tape is attached around the adhesive.

The method of manufacturing an artificial nail according to the present invention comprises the steps of forming an upper mold having a concave portion having the same shape as the upper surface of the artificial nail and a convex portion having the same shape as the lower surface of the artificial nail, Preparing a lower mold having a convex portion formed thereon, fixing the upper mold and the lower mold to each other to form a space having the same shape and structure as the artificial fingernail, injecting the molten resin into the space, And separating the molded article after the molten resin is cured.

According to the present invention, a three-dimensional effect can be imparted to an artificial nail having a smooth upper surface which can not be realized by a conventional art, so that a variety of patterns and colors can be expressed.

In addition, the color layer can be implemented on the lower surface of the artificial nail having a curved surface as a whole and a three-dimensional curved surface structure in which the subject is not a flat surface.

In the conventional artificial nails, it is possible to omit the coating process for protecting the pattern or pattern implemented on the surface, that is, the upper surface, and to provide a synthetic nail which does not easily dissolve in water even if a water-soluble adhesive is used, and a manufacturing method thereof can do.

1A to 1D are a perspective view and a cross-sectional view of an artificial nail having a three-dimensional effect according to the prior art.
2 is a perspective view of an artificial nail according to the present invention.
Figure 3a is a cross-sectional view of the artificial nail of Figure 2 cut on line AA.
FIG. 3B is a cross-sectional view of the artificial nail of FIG. 2 cut along line BB.
4 is a perspective view showing various embodiments of the engraved portion formed on the lower surface of the artificial nail according to the present invention.
5 is a sectional view of a mold for explaining a method of manufacturing an artificial nail according to the present invention.
6 is a sectional view of an artificial nail for explaining a method of manufacturing an artificial nail according to the present invention.
Fig. 7 is a perspective view showing a state in which the artificial nail according to the present invention is actually attached to the nail;

A specific embodiment of the present invention will be described with reference to the drawings.

FIG. 2 is a perspective view of an artificial nail according to an embodiment of the present invention, FIG. 3a is a sectional view taken along line AA of FIG. 2, and FIG. 3b is a cross- .

As shown in Figures 2, 3a, 3b, the artificial nail 10 has a proximal end 12 and a distal end 14. The first end 12 refers to the end of the nail that is attached to a cuticle (also referred to as a "muffle") when the nail is attached to the nail and the second end 14 is a free edge Free edge "or" shipbone "(also referred to as" nail tip "). The artificial nail 10 also includes an upper surface 20 and a lower surface 30 which refer to the outer surface exposed when the artificial nail is attached to the nail and the lower surface 20 Refers to a face directly attached to a nail plate (also referred to as a "nail plate").

The upper surface 20 is a smooth surface with no projections or recesses, while the lower surface 30 has a depressed portion 35 formed therein. 2 and 3B, the engraved portion 35 is not formed on the entire lower surface 30 when seen in the longitudinal direction of the artificial nail 10 (that is, in the direction of line BB in FIG. 2) Are formed on the entirety of the other surface except for the surface of the substrate. However, the present invention is not necessarily limited to such an engraved portion 35, and the engraved portion 35 may be formed entirely on the lower surface 30.

2, although the engraved portion 35 forms a continuous rhombic pattern, it is also possible to represent another pattern or pattern with the engraved portion 35. For example, as shown in FIG. 4, a petal-like engraved portion 35a may be formed near the second end portion 14, or a character such as Hangul, Chinese character or Roman letter may be expressed by the engraved portion 35b, The engraved portion 35c may be formed.

A french nail can be realized when the monochromatic engraved portion 35c is formed at the nail end portion of the artificial nail 10 (i.e., at the end portion of the second end portion 14).

The artificial nails 10 used in the present invention may be made of a resin having impact resistance and flexibility as a transparent or semitransparent ABS resin (Acrylonitrile Butadiene Styrene). It is also possible to manufacture the artificial nails 10 with polystyrene (PS) resin, SBS block resin, EVA (Ethylene Vinyl Acetate) resin, polycarbonate resin and acrylic resin in addition to ABS resin.

The thickness of the artificial nails 10 may be constant or the thickness at the first end 12 side may be made thinner than the thickness at the second end 14 side. The thickness of the artificial nail 10 is 0.18 mm to 0.85 mm, and the depth of the engraved portion 35 is preferably 0.05 mm or more and 0.5 mm or less. The reason why the depth of the engraved portion 35 is 0.5 mm or less is because it is difficult to form the engraved portion 35 more than the thickness of the artificial nail 10. Meanwhile, in the present invention, since the engraved portion 35 should have a three-dimensional effect such as a pattern, a pattern or a character to be represented by the engraved portion 35, the depth must be greater than 0.05 mm to achieve such a stereoscopic effect.

A method of manufacturing the artificial nail 10 according to the present invention will be described with reference to FIGS. 5 and 6. FIG.

Herein, a method of manufacturing the artificial nails 10 by an injection molding process is described. Referring to FIG. 5, an injection mold 100 has an upper mold 110 and a lower mold 120. A concave portion 112 is formed on the bottom surface of the upper mold 110. The concave portion 112 has the same shape as the upper surface 20 of the artificial nail 10 described above. A convex portion 122 is formed on the upper surface of the lower mold 120, and an embossed portion 124 is formed on the convex portion 122. The convex portion 122 has the same shape as the lower surface 30 of the artificial nail 10 described above and the embossed portion 124 of the lower metal mold 120 has the same shape as the engraved portion 35 of the artificial nail 10 Shape.

When the upper and lower molds are fastened so that the upper mold 110 and the lower mold 120 are engaged with each other, a space having the same shape and structure of the artificial nails to be molded, that is, a cavity, . Then, the plasticizing step for melting the ABS resin is started. Then, the injection part (not shown) is advanced toward the mold 100 and the molten resin is injected into the cavity 130 through the runner 140 and the gate. Then, the mold is subjected to a holding process (a process of holding the cavity for a predetermined time after the cavity is filled with the molten resin) and a cooling process, and then the upper and lower molds are separated from each other to separate the molded product from the mold 100.

When manufacturing the artificial nails of the present invention through such an injection molding process, it is preferable to maintain the following process conditions. The reason for keeping such process conditions is that artificial nails are very thin and if the flow of the molten resin is not good due to the temperature being too low, poor molding may occur, and if the temperature is too high, This is because a bad appearance may occur. Proper process conditions must therefore be maintained.

Drying of resin: 2 to 4 hours at 80 DEG C (water content 0.01% or less)

Cylinder temperature condition: rear 180 占 폚 to 200 占 폚, middle 190 占 폚 to 210 占 폚, front 200 占 폚 to 220 占 폚

Nozzle temperature: 200 ° C to 250 ° C

Mold temperature: 40 ℃ ~ 70 ℃

Back pressure: 300 ~ 600 kg / ㎠

Injection screw speed: 30 to 60 rpm

Next, a color layer 50 is formed on the lower surface 30 of the artificial nail 10 as shown in Fig. For this purpose, the formed artificial nails are fixed and sprayed with a desired color paint, for example, using a robot sprayer, and then dried to form a color layer 50. In addition to such a spraying method, the color layer 50 may be formed by a pad printing method.

According to one embodiment of the present invention, a water-soluble film is attached to the lower surface 30 of the artificial nail 10 and various designs, patterns or colors are applied thereto by curl printing or curl-fit ) To form the color layer 50. This water pressure transfer method is suitable for the case where the lower surface 30 of the artificial nail 10 is curved as a whole and the engraved portion 35 is formed so that the subject is not a plane but a three-dimensional curved surface.

The water pressure transfer process involves transferring the pattern or design of the film onto the artificial nail surface by transferring the film to the water and pressing the artificial nail onto the film in a film printing step (gravure-printing of the desired pattern or design) , A step of removing the artificial nails from the water and washing the film, a drying step, and a surface coating step (coating step for protecting the transferred pattern or design).

According to another embodiment of the present invention, the color layer 50 may be formed through an in-mold decoration process. The injection simultaneous coating process is a method of inserting a silk-printed or gravure-printed film into a cavity between the upper mold 110 and the lower mold 120 to transfer the ink layer simultaneously with molding.

6 shows that the color layer 50 is formed on the entire lower surface 30 of the artificial nail 10 in order to facilitate understanding of the present invention, It will be understood by those skilled in the art that the present invention may be embodied in various ways without departing from the spirit and scope of the invention.

Meanwhile, conventional artificial nails are coated with transparent ultraviolet rays to protect the patterns and patterns on the upper surface of artificial nails. To this end, artificial nails are fixed and then transferred to a conveyor belt to remove surface static electricity, Secondary coating, drying, UV curing, and post-drying steps. However, in the present invention, this complicated step can be omitted because the pattern or pattern is formed on the lower surface 30 rather than on the upper surface of the artificial nail.

An adhesive layer 60 is formed below the color layer 50 of the artificial nail 10 as shown in Fig. The adhesive layer may have a structure in which a pre-glue layer is applied to the entire lower surface 30, or a water-soluble pre-adhesive is applied only to the center of the lower surface 30 and a double- can do. When the adhesive layer 60 is formed with a structure made of a pre-adhesive and a double-sided tape, for example, when the artificial nail 10 is attached to the nail and then the water-soluble pre-adhesive is dissolved in water when the nail 10 is contacted with water, There is an effect of preventing the falling phenomenon.

7, when the artificial nail 10 is attached to the nail 70, an instant adhesive is applied to the lower surface 30 of the artificial nail 10 or the upper surface of the nail 70, 10 on the nail 70 to cover the desired area of the nail 70. The artificial nails 10 are then pressed using a hand or other tool and then the artificial nails 10 are trimmed using a nail file when the adhesive has hardened for a certain period of time.

Since the artificial nail 10 according to the present invention has the engraved portion 35 formed on the lower surface 30 that directly contacts the nail 70, Is much wider than. Thus, the adhesion between the artificial nails 10 and the nails 70 is improved.

10: Artificial nails
12: first end
14: second end
20: upper surface
30: Lower surface
35: Embossed portion
50: color layer
60: adhesive layer
70: Nails
100: Mold
130: cavity
140: Runner

Claims (14)

As artificial nails,
A first end attached to the sphygmium of the nail,
A second end which is closely attached to the nail end of the nail,
An upper surface forming an outer surface exposed to the outside when the artificial nail is attached to the nail,
And a lower surface directly attached to the nail plate of the nail,
Wherein the upper surface is a smooth surface and the lower surface is formed with a depressed portion having a predetermined depth. The method of claim 1,
Wherein the depth of the engraved portion is in a range of 0.05 mm to 0.5 mm. The method of claim 1,
Wherein the engraved portion is formed on a lower surface except the vicinity of the first end. The method of claim 1,
And a color layer and an adhesive layer are sequentially formed on the lower surface of the artificial nail. 5. The method of claim 4,
Wherein the adhesive layer has a structure in which a pre-glue layer is applied to the entire lower surface. 5. The method of claim 4,
Wherein the adhesive layer has a structure in which a water-soluble pre-adhesive is applied only to the center of the lower surface and a double-sided tape is attached to the periphery of the adhesive layer. As artificial nails,
A first end attached to the sphygmium of the nail,
A second end which is closely attached to the nail end of the nail,
An upper surface forming an outer surface exposed to the outside when the artificial nail is attached to the nail,
And a lower surface directly attached to the nail plate of the nail,
Wherein the upper surface is a smooth surface and the lower surface is formed with a depressed portion having a depth ranging from 0.05 mm to 0.5 m,
Wherein a color layer and an adhesive layer are sequentially formed on the lower surface, and the adhesive layer has a structure in which a water-soluble pre-adhesive is applied only to the center of the lower surface, and a double-sided tape is attached to the periphery thereof. 1. A method of making an artificial nail comprising an upper surface forming a smooth outer surface exposed when the artificial nail is attached to a nail and a lower surface directly attached to the nail plate of the nail and having a predetermined depth of engraving,
Preparing a lower mold having an upper mold having a concave portion having the same shape as the upper surface of the artificial nail and a convex portion having the same shape as the lower surface of the artificial nail;
Forming a space having the same shape and structure as the artificial nail by fastening the upper mold and the lower mold so as to mesh with each other;
Injecting a molten resin into the space;
And separating the molded article after the molten resin is cured,
Wherein a convex portion of the lower mold has an embossed portion formed in the same shape as the engraved portion. 9. The method of claim 8,
The step of separating the molded article may include the steps of forming a colored layer on the lower surface of the artificial nail by a paint spraying or pad printing method,
And forming an adhesive layer on the color layer. 9. The method of claim 8,
The step of separating the molded article is followed by the step of forming a color layer,
Attaching a water-soluble film to a lower surface of the molded article;
Placing the water-soluble film in water, pressing the molded product on the film, and transferring the pattern or design of the film to the lower surface of the molded article. 9. The method of claim 8,
Wherein the step of injecting the molten resin comprises:
Inserting the printed film into the space, and then injecting the molten resin. The method of claim 9,
Wherein the adhesive layer is a structure in which a pre-glue layer is applied to the entire lower surface of the artificial nail. The method of claim 9,
Wherein the adhesive layer has a structure in which a water-soluble pre-adhesive is applied only to the center of the lower surface, and a double-sided tape is adhered thereon. 1. A method of making an artificial nail comprising an upper surface forming a smooth outer surface exposed when the artificial nail is attached to a nail and a lower surface directly attached to the nail plate of the nail and having a predetermined depth of engraving,
An upper mold having a concave portion having the same shape as the upper surface of the artificial nail and a convex portion having the same shape as the lower face of the artificial nail and having the same embossed portion as the engraved portion, Preparing,
Forming a space having the same shape and structure as the artificial nail by fastening the upper mold and the lower mold so as to mesh with each other;
Injecting a molten resin into the space;
Separating the molded article after the molten resin is cured,
Forming a color layer on the lower surface,
And forming an adhesive layer on the color layer,
The step of forming the color layer may include the steps of attaching a water-soluble film to the lower surface of the molded article, placing the water-soluble film on water and pressing the molded article on the film to form a pattern or design of the film on the lower surface Comprising the step of transferring,
Wherein the step of forming the adhesive is a step of forming an adhesive layer having a structure in which a water-soluble pre-adhesive is applied only to the center of the lower surface, and a double-sided tape is adhered thereon.

Images