KR102567955B1 - Semi-cured gel nail sticker and Method for manufacturing thereof - Google Patents

Abstract

The present invention relates to a semi-curing gel nail sticker and a manufacturing method thereof. The semi-curing gel nail sticker includes a base film that has flexibility and elasticity and is cut by a certain external force, an adhesive layer located under the base film and attachable to an adherend, and located below the adhesive layer, , A release film coated with a release agent for peeling off from the adhesive layer, a decorative layer embodying the design of the gel nail sticker on the base film, and present on the decorative layer, protecting the decorative layer, and Includes a UV curable top gel layer that imparts durability and has a cross-linking density (gel content) of less than 50%, and a protective film that exists on the UV curable top gel layer and protects the UV curable top gel layer exposed to the outside After being attached to the adherend, the UV-curable top gel layer is post-cured so that the crosslinking density becomes 100% by UV energy applied by a user.

Description

Semi-cured gel nail sticker and method for manufacturing thereof

The present invention relates to a semi-curing gel nail sticker and a manufacturing method thereof.

A gel nail sticker is a product that is attached to a user's fingernail or toenail to bring about various aesthetic effects. Gel nail stickers are made up of multiple layers, and if the gel nail stickers collide with an external hard object, they may be broken or damaged.

In this case, the surface of the gel nail sticker is damaged, and the original aesthetic purpose may not be achieved. Furthermore, even before being damaged, the user must pay attention to the contact between the gel nail sticker and an external object, which can cause great inconvenience in daily life.

An object of the present invention is to provide a semi-curing gel nail sticker with enhanced durability.

In addition, the present invention can provide a method for manufacturing a semi-curing gel nail sticker with enhanced durability.

In addition, the present invention can provide a semi-curing gel nail sticker of various designs and a manufacturing method thereof by using a pattern mask when forming a decorative layer.

In addition, the present invention can provide a semi-curing type gel nail sticker and a manufacturing method capable of simplifying the top gel layer forming process by using a pattern mask when forming the top gel layer.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned above can be understood by the following description and will be more clearly understood by the examples of the present invention. It will also be readily apparent that the objects and advantages of the present invention may be realized by means of the instrumentalities and combinations indicated in the claims.

Semi-curing gel nail stickers according to some embodiments for solving the problems of the present invention, a base film that has flexibility and elasticity and is cut by a certain or more external force, is located under the base film, and can be attached to an adherend. A release film located under the adhesive layer and coated with a release agent for peeling off from the adhesive layer, a decorative layer embodying the design of the gel nail sticker on the base film, and present on the decorative layer, , Protects the decorative layer, imparts durability to the decorative layer, and is exposed to the outside while being present on the UV curable top gel layer and the UV curable top gel layer, which has a crosslinking density (Gel content) of less than 50%, semi-cured It includes a protective film that protects the UV curable top gel layer, and after the UV curable top gel layer is attached to the adherend, post-curing occurs so that the crosslinking density becomes 100% by UV energy applied by a user.

In addition, the base film may be made of an ultraviolet curable material including at least one of a urethane acrylate oligomer having a functional group number of less than 6 and a monomeric acrylate having a functional group number of 2 or more.

In addition, the base film may be made of a thermosetting material made of a synthetic material based on polyol and isocyanate.

In addition, the adhesive layer may include at least one of acrylic, urethane, and silicone, and may be cured by thermal energy and/or ultraviolet energy.

In addition, the release agent may include at least one of silicon or fluorine.

In addition, the UV-curable top gel layer may include at least one of an oligomer, a monomer, an initiator, and a surface lubricant.

In addition, the UV-curable top gel layer has a crosslinking density of 15% or more and less than 50%, so surface viscosity may be removed.

In addition, the protective film may be attached on the UV curable top gel layer through a silicone adhesive.

In addition, the step of forming the decorative layer or the step of forming the ultraviolet curable top gel layer may be performed using a pattern mask.

In order to solve other problems of the present invention, a method for manufacturing a semi-curing type gel nail sticker according to some embodiments is flexible in manufacturing a gel nail sticker that is attached to an adherend and then cured by a user by additionally applying ultraviolet energy. and preparing a base film having a characteristic of being cut by an external force of at least a certain level; forming an adhesive layer by applying an adhesive material under the base film for attachment to the adherend; attaching a release film coated with a release agent under the adhesive layer; forming a decorative layer on the base film; Forming a UV curable top gel layer having a gel content of less than 50% on the decorative layer; and attaching a protective film that protects the UV-curable top gel layer, and post-curing occurs so that the crosslinking density becomes 100% by UV energy applied by a user after being attached to the adherend.

In addition, in the step of forming the adhesive layer and the step of forming the decorative layer, the other step may be performed after any one of the step of forming the adhesive layer or the step of forming the decorative layer is performed first. there is.

In addition, the step of forming the UV-curable top gel layer may include attaching an auxiliary film and removing the auxiliary film.

In addition, the step of forming the decorative layer or the step of forming the ultraviolet curable top gel layer may be performed using a pattern mask.

In addition, in the step of forming the ultraviolet curable top gel layer, the thickness of the ultraviolet curable top gel layer in the edge region may be smaller than the thickness in the central region.

Other embodiment specifics are included in the detailed description and drawings.

The present invention can provide a semi-curing gel nail sticker having enhanced durability.

In addition, according to the present invention, by forming a decoration layer using a pattern mask, more various sizes of decorations can be used, and thus, gel nail stickers of various designs can be manufactured.

In addition, the present invention simplifies the top gel layer forming process by forming the top gel layer using a pattern mask, and it is possible to reduce foreign substances caught between the adherend and the gel nail sticker.

The effects of the present invention are not limited to the above-mentioned effects, and those skilled in the art can easily derive various effects of the present invention from the configuration of the present invention.

1 is a conceptual diagram for explaining the structure of a semi-curing gel nail sticker according to some embodiments of the present invention.
2a to 2f are intermediate views for explaining a method of manufacturing a semi-curing gel nail sticker according to some embodiments of the present invention.
3 is a flowchart illustrating a method of manufacturing a semi-curing gel nail sticker according to some embodiments of the present invention.
4 is a flowchart illustrating a method of manufacturing a semi-curing gel nail sticker according to some embodiments of the present invention.
5 is a flowchart illustrating a method of manufacturing a semi-curing gel nail sticker according to some embodiments of the present invention.
6 is a plan view for explaining a pattern mask used in the step of forming a decorative layer and the step of forming an ultraviolet curable top gel layer in a method of manufacturing a semi-curable gel nail sticker according to some embodiments of the present invention.
7 is a flowchart illustrating a method of manufacturing a semi-curing gel nail sticker according to some embodiments of the present invention.
8 is a perspective view illustrating a step of applying an ultraviolet curable top gel material in a method of manufacturing a semi-curable gel nail sticker according to some embodiments of the present invention.
Fig. 9 is a cross-sectional view along XI-XI' of Fig. 8;
10 is a flowchart illustrating a method of manufacturing a semi-curing type gel nail sticker according to another embodiment of the present invention.
11 is a conceptual diagram for explaining a method for measuring the crosslinking density of a semi-curing gel nail sticker according to some embodiments of the present invention.

Advantages and features of the present invention, and methods of achieving them, will become clear with reference to the detailed description of the following embodiments taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, only these embodiments make the disclosure of the present invention complete, and common knowledge in the art to which the present invention belongs. It is provided to fully inform the holder of the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numbers designate like elements throughout the specification. Terminology used herein is for describing the embodiments and is not intended to limit the present invention. Accordingly, the examples and embodiments herein should not be construed as limiting the scope of the present disclosure.

As used herein, the terms "comprising", "including" and variations thereof mean "including but not limited to" unless specified otherwise.

Unless explicitly stated otherwise, devices that communicate with each other need not continuously communicate with each other. Additionally, devices that communicate with each other may communicate directly or indirectly through one or more intermediaries.

Although process steps, method steps, algorithms, etc. may be described sequentially, such processes, methods, and algorithms may be configured to operate in an alternating order. In other words, any order or order of steps that may be described does not necessarily indicate a requirement that the steps be performed in that order. It does not necessarily indicate a requirement to follow the steps in sequence. The steps of the processes, methods and algorithms described herein may be performed in any order. Also, some steps may be performed concurrently.

When a single device or article is described herein, one or more devices or articles may be used in place of a single device or article. Similarly, where one device or article is described herein, one or more devices or articles may be used in place of a single device or article. A function or feature of a device may alternatively be implemented by one or more other devices not specified as having such function or feature.

Hereinafter, a semi-curing gel nail sticker and a manufacturing method thereof according to some embodiments of the present invention will be described with reference to FIGS. 1 to 11 .

1 is a conceptual diagram for explaining the structure of a semi-curing gel nail sticker according to some embodiments of the present invention.

Referring to FIG. 1 , a semi-curable gel nail sticker 100 according to some embodiments of the present invention includes a base film 110, an adhesive layer 120, a release film 130, a decorative layer 140, and an ultraviolet curable top. A gel layer 150 and a protective film 160 are included.

The base film 110 may support and protect various components of the semi-curing gel nail sticker 100 (hereinafter referred to as gel nail sticker). The base film 110 may be cut according to the shape of a fingernail or toenail, which is an adherend, when a certain external force is applied. Accordingly, the user may selectively attach the gel nail sticker 100 to fit the shape of the user's fingernail or toenail.

In addition, the base film 110 may be made of a material having flexibility and elasticity so that the gel nail sticker 100 can be easily bent along the curved surface of the adherend when the gel nail sticker 100 is attached to the adherend. there is. For example, the base film 110 is made of a thermosetting material made of a synthetic material based on polyol and isocyanate, or a urethane acrylate oligomer having a functional group number of less than 6. ) and a UV curable material including at least one of monomers acrylate having a functional group of 2 or more. Accordingly, the base film 110 may have flexibility and elasticity, and the base film 110 may be cured by heat or ultraviolet rays. However, the present invention is not limited thereto.

The adhesive layer 120 is located under the base film 110 . For example, the adhesive layer 120 may be formed on the lower surface of the base film 110 to attach the gel nail sticker 100 to an adherend.

The adhesive layer 120 may be made of an adhesive material. For example, the adhesive layer 120 may include at least one of acrylic, urethane, and silicone. In addition, the adhesive layer 120 may be cured by thermal energy and/or ultraviolet energy. Accordingly, the adhesive layer 120 may be cured by heat transmitted from the adherend or by ultraviolet rays caused by external exposure, so that the gel nail sticker 100 may be more firmly adhered to the adherend.

The release film 130 is positioned below the adhesive layer 120 . The release film 130 may be attached to the lower surface of the adhesive layer 120 to reduce curing of the adhesive layer 120 due to external exposure.

A release agent 131 may be applied to the upper surface of the release film 130 that comes into contact with the lower surface of the adhesive layer 120 . Thus, the release film 130 can be easily peeled off from the adhesive layer 120 . The release agent 131 may include at least one of silicon or fluorine, but is not limited thereto.

The decoration layer 140 is positioned on the base film 110 . The decoration layer 140 is formed to come into contact with the upper surface of the base film 110, so that the design of the gel nail sticker 100, such as the color, pattern, and decoration of the gel nail sticker 100, can be implemented. For example, the decoration layer 140 may include decoration of at least one of color, pattern, gold foil, silver foil, hologram foil, epoxy, glitter, and stone. However, this embodiment is not limited thereto.

Meanwhile, when a color layer is formed by decorating the decoration layer 140, a soft UV color ink may be used as a color layer forming material. Specifically, the soft UV color ink is a color ink cured by ultraviolet rays to have a soft property by removing only the stickiness of the surface, and may have physical properties that do not harden beyond a certain hardness even if the degree of curing is increased. Accordingly, the soft UV color ink may have relatively high adhesion to the base film 110 or the top gel layer 150 . In addition, when a plurality of color layers are formed using soft UV color ink, adhesion between the plurality of color layers may be relatively high, and thus, the curing time of the decoration layer 140 may be shortened.

Conventionally, when a color layer is formed as the decoration layer 140, a color ink that is not cured by ultraviolet rays is used to maintain the ductility of the color layer. In addition, in the case of using a UV color ink that is cured by ultraviolet rays, when curing the UV color ink, the UV color ink may be hardened to have a relatively high hardness. In this case, the hard UV color ink may have relatively low flexibility. Therefore, when the gel nail sticker including the decoration layer 140 formed of hard UV color ink is bent according to the shape of the adherend, cracks occur in the decoration layer 140 or the decoration layer 140 and the base film ( 110) or between the decoration layer 140 and the top gel layer 150, lifting may occur, resulting in damage to the gel nail sticker.

However, the soft UV color ink can maintain its soft properties while being cured by ultraviolet rays. Therefore, when the decoration layer 140 is formed using soft UV color ink, cracks in the decoration layer 140 can be reduced as the decoration layer 140 is flexibly bent, and the decoration layer 140 ) and the base film 110 or between the decoration layer 140 and the top gel layer 150 may be improved. In addition, in the case of forming a plurality of color layers, adhesion between the plurality of color layers is improved, and when forming the decoration layer 140, a curing time may be shortened, and thus work efficiency may be improved.

In addition, conventional UV color inks include isophorone, diethylene glycol monobutyl ether, color pigments, solvent naphtha (petroleum) heavy aromatic compounds, polyester resins and modified epoxy resins. can include At this time, the color pigment may have a content of about 12%.

On the other hand, the soft UV color ink used in the semi-curing gel nail sticker according to some embodiments of the present invention may have different components from the general UV color ink. Soft UV color inks may include oligomers, monomers, photoinitiators and color pigments. In this case, the soft UV color ink may not contain at least one of isophorone, diethylene glycol monobutyl ether, solvent naphtha (petroleum) heavy aromatic compound, polyester resin, and modified epoxy resin. there is. In addition, the color pigment of the soft UV color ink may have a lower content than that of the general UV color ink.

[Example 1]

In this embodiment, the decorative layer was formed as a single layer using the soft UV color ink prepared from the above components. The content of oligomers in the soft UV color ink used in Example 1 is 60-70%, the content of monomers is 15-25%, the content of photoinitiators is 5-10%, the content of color pigments is 1-5%, additives The content of is 1-2%. Example 1 was produced with a width of 25 mm and a length of 25 mm.

[Comparative Example 1]

Example 1 was the same except that the above general UV color ink was used instead of the soft UV color ink.

[Comparative Example 2]

It was the same as in Example 1 except that a general solvent ink (heat drying ink) was used instead of the soft UV color ink.

[Comparative Example 3]

Only fabrics without any ink including the soft UV color ink were used, and other conditions were the same as in Example 1.

[Experimental example]

In the following, the tensile strength, breaking force, breaking distance and elongation of Example 1 and Comparative Examples 1 to 3 were measured.

Here, the tensile strength can be calculated by dividing the force applied to the soft UV color ink to the greatest extent before the sample is broken among the forces applied to the soft UV color ink by the cross-sectional area of the soft UV color ink before the experiment.

In addition, the elongation rate represents the extent to which a sample is stretched when a force is applied to the sample and the sample is broken. The elongation rate may be a value obtained by dividing the elongation of a preset distance between gauges in the sample by the original distance between gauges.

However, the present invention is not limited thereto, and tensile strength and elongation can be calculated in various ways.

A peel test was performed on the plurality of samples at a test angle of 180 degrees and a speed of 300 mm/min.

item Tensile strength (Mpa) Breaking force (gf) Break distance (mm) Elongation (%) Example 1 5.76 1657.57 35.63 153.13 Comparative Example 1 4.24 1232.54 25.27 101.08 Comparative Example 2 4.94 1207.57 50.36 201.44 Comparative Example 3 4.44 548.02 47.3 189.19

Looking at the above experimental results, the tensile strength of Example 1 was measured the strongest, and the breaking force was also measured the strongest. This may mean that Example 1 has stronger durability than other Comparative Examples. In addition, Example 1 may have an elongation rate of about 50% higher than about 100% elongation rate of general UV color ink by forming an elongation rate of about 150%.

That is, the semi-curing gel nail sticker of the present invention has high durability and elongation, so that the breakage rate of the gel nail sticker can be reduced. In addition, the gel nail sticker may have flexibility that can be easily bent along the curved surface of the adherend, so that the user's wearing comfort can be maximized. Accordingly, the user's satisfaction can be improved by increasing the retention and retention of the gel nail sticker in the user's life.

Meanwhile, the decoration layer 140 may be formed through the pattern mask PM. This will be described later with reference to FIGS. 3 to 9 .

The UV curable top gel layer 150 may be positioned on the decoration layer 140 . The UV-curable top gel layer 150 may protect the decoration layer 140 and impart durability to the decoration layer 140 . The UV-curable top gel layer 140 may include at least one of an oligomer, a monomer, an initiator, and a surface lubricant.

The UV-curable top gel layer 150 may be semi-cured. For example, when the UV energy applied to completely cure the UV curable top gel layer 150 is defined as 100%, only 15% or more and less than 50% of UV energy may be applied to the UV curable top gel layer 150. . Accordingly, the UV-curable top gel layer 150 may be semi-cured and formed in a state in which the viscosity of the surface is removed.

The UV-curable top gel layer 150 may have a gel content of less than 50%. At this time, the crosslinking density may be determined according to the amount of the above-mentioned ultraviolet energy. Specifically, the UV-curable top gel layer 150 may have a crosslinking density of 15% or more and less than 50%. For example, when the crosslinking density of the UV-curable top gel layer 150 is 50% or more, the gel nail sticker 100 has reduced flexibility due to curing, and may cause lifting from the adherend.

On the other hand, when the crosslinking density of the UV curable top gel layer 150 is less than 15%, the viscosity of the UV curable top gel layer 150 increases and the hardness is low, making it difficult to maintain the shape of the gel nail sticker 100 There may be. Accordingly, the UV curable top gel layer 150 is formed with a crosslinking density of 15% or more and less than 50%, so that the viscosity of the surface of the UV curable top gel layer 150 is removed and has flexibility that can be stably attached to the adherend. there is.

After the UV-curable top gel layer 150 is attached to the adherend, it is post-cured. Specifically, the UV curable top gel layer 150 may be completely cured on an adherend by additionally applied UV energy. That is, the UV-curable top gel layer 150 may have a crosslinking density of 100% by post-curing. Thus, the UV curable top gel layer 150 can maintain the shape and design of the gel nail sticker 100 on the adherend.

Meanwhile, the crosslinking density of the UV curable top gel layer 150 can be confirmed by analyzing the curable top gel layer 150. This will be described later with reference to FIG. 10 .

In addition, the UV curable top gel layer 150 may be formed through the pattern mask PM. This will be described later with reference to FIGS. 3 to 9 .

The protective film 160 is positioned on the UV curable top gel layer 150 . The protective film 160 is positioned on top of the gel nail sticker 100 to protect the UV curable top gel layer 150 . At this time, the adhesive 161 may be applied to the lower surface of the protective film 160 in contact with the UV curable top gel layer 150 . The adhesive 161 may allow the protective film 160 to adhere to the UV curable top gel layer 150 . The adhesive 161 may be made of silicon, but is not limited thereto.

In the semi-curing gel nail sticker 100 according to some embodiments of the present invention, the user removes the release film 130 to expose the adhesive layer 120, and the exposed adhesive layer 120 is attached to the upper surface of the user's fingernail or toenail. can make it At this time, the ultraviolet curable top gel layer 150 of the semi-curable gel nail sticker 100 according to some embodiments of the present invention attached to the nail may have a crosslinking density of 15% or more and less than 50%. Subsequently, the user may additionally apply ultraviolet energy through an ultraviolet lamp after attaching the semi-curing gel nail sticker 100 according to some embodiments of the present invention to fingernails and toenails. Accordingly, the UV-curable top gel layer 150 may be post-cured, that is, completely cured so that the cross-linking density becomes 100%.

The semi-curable gel nail sticker 100 according to the present embodiments first removes the stickiness of the surface through the UV curable top gel to which less than 50% of the UV energy is applied to lower the manufacturing difficulty, but improves durability through a subsequent post-curing step. can provide.

Hereinafter, a method of manufacturing a semi-curing gel nail sticker 100 according to some embodiments of the present invention will be described with reference to FIGS. 2A to 2F. Parts overlapping with the above-described embodiment are omitted or simplified.

2a to 2f are intermediate views for explaining a method of manufacturing a semi-curing gel nail sticker according to some embodiments of the present invention.

First, referring to FIGS. 2A and 2B , an adhesive layer 120 is formed on the lower surface of the prepared base film 110 . As described above, the adhesive layer 120 may be cured by thermal energy and/or ultraviolet energy. The adhesive layer 120 may include at least one of acrylic, urethane and silicone.

Subsequently, referring to FIG. 2C , a release film 130 is attached to the lower surface of the adhesive layer 120 . The release agent 131 is applied to the upper surface of the release film 130 in contact with the adhesive layer 120 so that the release film 130 can be easily peeled off from the adhesive layer 120 .

Subsequently, referring to FIG. 2D , a decorative layer 140 is formed on the opposite side of one side of the base film 110 on which the adhesive layer 120 is formed. The decoration layer 140 may implement the design of the gel nail sticker 100 .

Subsequently, referring to FIG. 2E , an ultraviolet curable top gel layer 150 is formed on the decoration layer 140 . The UV curable top gel layer 150 may be formed by applying an UV curable top gel material. The UV-curable top gel layer 150 may be semi-cured by ultraviolet rays to have a crosslinking density of 15% or more and less than 50%. Accordingly, the viscosity of the surface of the UV-curable top gel layer 150 may be removed. The UV-curable top gel layer 150 may protect the design of the decoration layer 140 and impart durability.

Subsequently, referring to FIG. 2F , a protective film 160 is formed on the UV curable top gel layer 150 . The protective film 160 is positioned on the uppermost surface of the gel nail sticker 100 to protect components under the protective film 160 from external impact or environmental factors.

After the release film 130 is removed, the gel nail sticker 100 that has undergone the manufacturing process of FIGS. 2A to 2F is attached to the user's fingernails or toenails, and then ultraviolet rays are applied to the UV-curable top gel layer 150 to UV-curable top. The gel layer 150 may be completely cured. The durability of the gel nail sticker 100 may be improved through post-curing of the UV-curable top gel layer 150 .

Hereinafter, the manufacturing sequence of the semi-curing type gel nail sticker 100 according to some embodiments of the present invention will be described with reference to FIGS. 3 to 7 . Parts overlapping with the above-described embodiment are omitted or simplified. Also, for convenience of description, FIG. 1 may be referred to together.

3 is a flow chart for explaining a method for manufacturing a semi-curing gel nail sticker according to some embodiments of the present invention, and FIG. 4 is a flowchart for explaining a method for manufacturing a semi-curing gel nail sticker according to some embodiments of the present invention. 5 is a flowchart for explaining a method for manufacturing a semi-curing gel nail sticker according to some embodiments of the present invention, and FIG. 6 is a flowchart for manufacturing a semi-curing gel nail sticker according to some embodiments of the present invention. It is a plan view for explaining a pattern mask used in the step of forming a decorative layer and the step of forming an ultraviolet curable top gel layer in the method, and FIG. 7 is a flowchart for explaining a method of manufacturing a semi-curable gel nail sticker according to some embodiments of the present invention. 8 is a perspective view illustrating a step of applying an ultraviolet curable top gel material in a method of manufacturing a semi-curable gel nail sticker according to some embodiments of the present invention, and FIG. 9 is a cross-sectional view taken along line XI-XI' of FIG. 8 10 is a flowchart illustrating a method of manufacturing a semi-curing gel nail sticker according to another embodiment of the present invention.

Referring to FIG. 3 , a method of manufacturing a semi-curing gel nail sticker 100 according to some embodiments of the present invention includes preparing a base film (S10), applying an adhesive layer (S20), attaching a release film (S30), A decorative layer forming step (S40), an ultraviolet curable top gel layer forming step (S50), and a protective film attaching step (S60) may proceed.

Here, the adhesive layer 120 and the release film 130 are formed in the direction of the lower surface of the base film 110, and the decorative layer 140, the UV curable top gel layer 150, and the protective film 160 are formed along the base film 110 It can be formed in the upper surface direction of. Accordingly, the step of applying the adhesive layer in the direction of the lower surface of the base film 110 (S20) and the step of attaching the release film (S30) are performed first, and then the step of forming a decorative layer on the base film 110 (S40) and the UV-curable top gel layer. A forming step (S50) and a protective film attaching step (S60) may be performed.

However, the present embodiment is not limited thereto, and the decorative layer forming step (S40), the ultraviolet curable top gel layer forming step (S50), and the protective film 160 attaching step (S60) are performed on the base film 110. After that, the adhesive layer coating step (S20) and the release film attachment step (S30) may be performed on the lower surface of the base film 110. In addition, the manufacturing step may be simultaneously performed in the direction of the lower surface and the upper surface of the base film 110 . In addition, the decorative layer forming step (S40) may be performed in a state in which only some of the base film preparation step (S10), the adhesive layer application step (S20), and the release film attachment step (S30) have progressed. That is, processes of the upper and lower surfaces of the base film 110 may be performed in parallel with each other.

Referring to FIGS. 3 and 4 , a base film preparation step (S10) is performed. The base film preparation step ( S10 ) may include a film preparation step ( S11 ), a solution application step ( S12 ), and a first curing step ( S13 ).

First, looking at the manufacture of the base film 110, the film is prepared (S11). Subsequently, a solution in which polyol and isocyanate are synthesized is applied on the film (S12). Subsequently, the applied polyol and isocyanate are first cured (S13). Here, the first curing may be performed by a thermal drying method. Accordingly, as the polyol and isocyanate solution on the film are thermally dried, the base film 110 may be completed.

Subsequently, an adhesive layer applying step (S20) is performed. The adhesive layer applying step ( S20 ) may include an adhesive material applying step ( S21 ) and a second curing step ( S22 ). An adhesive material is applied on the base film 110 (S21). Then, the adhesive material is cured a second time to complete the adhesive layer 120 (S22). At this time, the second curing may be performed through heat or ultraviolet light.

Next, a release film is attached on the adhesive layer 120 (S30). Through this, a module structure including the base film 110 and the adhesive layer 120 may be completed.

Subsequently, a decorative layer forming step (S40) is performed. The decoration layer forming step (S40) may include a film removal step (S41), a decoration forming step (S42), and a drying and curing step (S43). Specifically, in the decorative layer forming step (S40), a decoration is formed on the surface of the base film 110 on which the adhesive layer 120 is not formed (S42), and then the decoration is dried and cured (S43) to form the decorative layer. (140) can be formed.

In the decoration forming step ( S42 ), a pattern mask (PM) may be used.

Specifically, referring to FIG. 6 , the pattern mask PM may include a pattern PT corresponding to the shape of an adherend, that is, a pattern PT in the shape of a fingernail or toenail. Accordingly, when the decoration layer 140 is formed, the decoration may pass through the pattern PT of the pattern mask PM and be seated on the base film 110 .

Referring to FIGS. 3, 5, and 6, that is, in the decoration forming step (S42), the pattern mask PM is disposed on the base film 110 and the decoration is applied on the pattern mask PM to form the decoration. can do. At this time, since any decoration can be used as long as it can pass through the pattern PT, the decoration can be formed using more various sizes and designs of decoration. After the decoration is formed, the decoration layer 140 may be formed by drying and curing (S43).

Here, the pattern mask PM may be made of a metal such as SUS304, INVAR, or aluminum, or an inorganic material such as silicon or Teflon. However, the present invention is not limited thereto.

In the conventional gel nail sticker manufacturing method, since a mesh screen is used to form the decoration, the size of the decoration that can constitute the decoration layer 140 is limited according to the mesh size of the mesh screen. For example, when using glitter as a decoration, if the size of the glitter is larger than the mesh size of the mesh screen, it is difficult for the glitter to pass through the mesh screen, so a glitter larger than the mesh size of the mesh screen cannot be used. That is, since the decoration can be formed using only decorations smaller than the mesh size of the mesh screen, there is a limit to the design of the decoration layer 140.

In the gel nail sticker manufacturing method according to some embodiments of the present invention, by forming the decoration layer 140 using a pattern mask (PM), decorations of various sizes can be used, and the decoration layer 140 of various designs can be used. can be implemented For example, if decoration is to be formed using glitter, since the size of the general glitter is smaller than the size of the pattern PT of the pattern mask PM, the size of the glitter may not be limited. That is, as decorations of various sizes can be used, the design of the decoration layer 140 can be formed in more diverse ways.

In the above description, the present embodiment has been described as using the pattern mask PM, but the present embodiment is not limited thereto. That is, in this embodiment, other general methods can be used as well as the method using the pattern mask PM.

In this case, the decorative layer 140 may be heat cured or UV cured. Accordingly, as the decoration is dried and cured, the decoration layer 140 may be completed, and printed materials or ornaments constituting the decoration layer 140 may be firmly fixed.

Next, an ultraviolet curable top gel layer forming step (S50) is performed. Forming an ultraviolet curable top gel layer (S50) may include applying an ultraviolet curable top gel material (S51), attaching an auxiliary film (S52), applying minimum ultraviolet energy (S53), and removing the auxiliary film (S54).

In the step of forming the UV curable top gel layer (S50), the UV curable top gel material is applied on the decoration layer 140 (S51), and then an auxiliary film attachment step may be performed (S52).

Referring to FIGS. 3 and 6 to 9 , in the step of applying an ultraviolet curable top gel material (S51), a pattern mask (PM) may be used. That is, the top gel layer 150 may be formed using the pattern mask PM.

Specifically, in the step of applying the UV-curable top gel material (S51), a pattern mask (PM) is disposed on the decoration layer 140, and a top gel material (TZ) is applied on the pattern mask (PM) to form a top gel material pattern (TZP). ) can be formed. At this time, the top gel material pattern TZP has a shape corresponding to the pattern PT and may correspond to the shape of the adherend.

In this way, when the top gel material TZ is applied through the pattern mask PM, the top gel layer 150 having a desired thickness can be formed even if the top gel material TZ is applied only once.

Specifically, in the conventional gel nail sticker manufacturing method, a mesh screen may be used in the step of applying the top gel material. When the top gel material (TZ) is applied through the mesh screen, the top gel material (TZ) may be applied to a thickness of 20 to 50 μm when the top gel material (TZ) is applied once. However, since the target thickness of the general top gel layer 150 is 350 to 400 μm, in the case of forming the top gel layer 150 through a mesh screen, it is inconvenient to apply the top gel material (TZ) multiple times. That is, when applying the top gel material (TZ) through the mesh screen, the top gel material (TZ) should be applied thinly several times.

In the case of applying the top gel material (TZ) through the pattern mask (PM) as in the present invention, even if the top gel material (TZ) is applied only once, the target thickness of the top gel layer 150 can be achieved, so that the UV curable top gel layer The forming step (S50) can be simplified, and manufacturing costs can be reduced.

Meanwhile, the top gel material pattern TZP formed by applying the top gel material TZ on the pattern mask PM may have a thickness d1 at an edge region smaller than a thickness d2 at a central region.

Specifically, when the top gel material TZ is applied using the pattern mask PM, the top gel material pattern TZP may be formed along the shape of the pattern PT of the pattern mask PM. In this case, when the pattern mask PM is removed, the top gel material pattern TZP may naturally flow from the central area to the edge area. Accordingly, the thickness of the top gel material pattern TZP may be relatively thick in the central region and relatively thin in the edge region. That is, the thickness of the top gel material pattern TZP may decrease from the center area toward the edge area. In FIG. 9, it has been described that the thickest area of the top gel material pattern (TZP) is the central area, but the present invention is not limited thereto. The thickest part of the top gel material pattern (TZP) may be formed close to the edge area due to a process difference.

In addition, as the top gel layer 150 is formed by UV-curing the top gel material pattern TZP, the top gel layer 150 may also have a thickness in the edge region that is thinner than that in the central region.

In this way, when the thickness of the top gel layer 150 in the edge area is smaller than the thickness in the center area, when the user later attaches the gel nail sticker 100 to the adherend, the adherend and the gel nail sticker ( 100), it is possible to reduce foreign substances such as hair from being caught in between.

For example, when the edge area of the gel nail sticker 100 is formed thick, inconvenience such as hair getting caught between the adherend and the gel nail sticker 100 may occur in the edge area of the adherend.

Therefore, like the gel nail sticker 100 of the present invention, the thickness of the edge area of the top gel layer 150 is made thinner than the thickness of the center area so that the edge area of the gel nail sticker can be firmly attached to the edge area of the adherend. can Accordingly, it is possible to reduce foreign matter such as hair from being caught between the adherend and the gel nail sticker in the edge region of the adherend.

In the auxiliary film attaching step (S52), an auxiliary film is attached on the UV-curable top gel material. Accordingly, when the next step, the minimum ultraviolet energy application step (S53) is performed, it is possible to reduce the inflow of impurities into the ultraviolet curable top gel material, and the ultraviolet energy can be uniformly applied through the auxiliary film.

In addition, UV energy may come into contact with air while moving to cure the UV curable top gel material. In this case, since UV energy is consumed to decompose air, efficiency in the step of applying the minimum UV energy (S53) may decrease. Thus, by attaching an auxiliary film on the UV-curable top gel material, the efficiency in the minimum UV energy application step (S53) can be improved.

Subsequently, after applying minimum UV energy to the UV curable top gel material to which the auxiliary film is attached (S53), the auxiliary film on the UV curable top gel layer 150 may be removed through the auxiliary film removing step (S54) (S54). ). Subsequently, the gel nail sticker 100 may be completed by attaching the protective film 160 on the UV curable top gel layer 150 .

Meanwhile, referring to FIG. 10 , in the UV-curable top gel layer forming step (S50′), the auxiliary film attaching step (S52) and the auxiliary film removing step (S54) may be omitted. Specifically, in the method of manufacturing a semi-curable gel nail sticker according to another embodiment of the present invention, the UV-curable top gel layer forming step (S50') is performed after applying the UV-curable top gel material on the decorative layer 140 (S51). The UV curable top gel layer 150 may be completed by performing only the UV energy application step (S53). After completing the UV curable top gel layer 150, the gel nail sticker 100 may be completed by attaching the protective film 160.

Hereinafter, with reference to FIG. 11, a method for measuring the crosslinking density of the semi-curing gel nail sticker 100 according to some embodiments of the present invention will be described. Parts overlapping with the above-described embodiment are omitted or simplified.

11 is a conceptual diagram for explaining a method for measuring the crosslinking density of a semi-curing gel nail sticker according to some embodiments of the present invention.

First, a UV-curable top gel layer sample (150_1) and a softening solution (S) are prepared. The UV-curable top gel layer sample 150_1 may be a semi-cured sample having a crosslinking density of 15% or more and less than 50%. In addition, the softening solution (S) may be a material such as acetone capable of softening the cured resin constituting the ultraviolet curable top gel layer 150, but is not limited thereto.

Next, after the UV curable top gel layer sample (150_1) is immersed in the solution for a certain period of time, the portion that is not to be softened is removed from the UV curable top gel layer sample (150_1), and then the dried and softened UV curable top gel layer sample (150_2) is prepared. manufacture

The crosslinking density of the UV curable top gel layer 150 can be obtained by comparing the weights of the UV curable top gel layer sample 150_1 before softening and the UV curable top gel layer sample 150_2 after softening. The crosslinking density can be obtained through [Equation 1] below. Here, W1 may be the weight of the UV-curable top gel layer sample 150_1, and W2 may be the weight of the softened UV-curable top gel layer sample 150_2.

[Equation 1]

The above description is merely an example of the technical idea of the present embodiment, and various modifications and variations can be made to those skilled in the art without departing from the essential characteristics of the present embodiment. Therefore, the present embodiments are not intended to limit the technical idea of the present embodiment, but to explain, and the scope of the technical idea of the present embodiment is not limited by these embodiments. The scope of protection of this embodiment should be construed according to the claims below, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of rights of this embodiment.

100: semi-curing gel nail sticker
110: base film
120: adhesive layer
130: release film
131: release agent
140: decoration layer
150: UV curable top gel layer
160: protective film
161: adhesive
150_1: UV-curable top gel layer sample
150_2: Softened UV-curable top gel layer sample
S: solution
W1: weight of UV-curable top gel layer sample
W2: weight of UV-curable top gel layer sample after softening

Claims (13)

A base film having flexibility and elasticity and being cut by a certain external force;
an adhesive layer located below the base film and attachable to an adherend;
a release film positioned under the adhesive layer and coated with a release agent for peeling from the adhesive layer;
a decorative layer embodying a gel nail sticker design on the base film;
an ultraviolet curable top gel layer present on the decorative layer, protecting the decorative layer, imparting durability to the decorative layer, and having a crosslinking density (gel content) of less than 50%; and
A protective film present on the UV curable top gel layer and protecting the UV curable top gel layer exposed to the outside,
After the UV curable top gel layer is attached to the adherend, post-curing occurs so that the crosslinking density becomes 100% by UV energy applied by the user,
The UV-curable top gel layer includes a top gel material,
The top gel material passes through a pattern mask including a nail and toenail pattern and forms a top gel material pattern having a shape corresponding to the pattern,
The UV-curable top gel layer includes a first part as a center region, a second part as an edge region, and a third part as an edge region, the first part being located between the second part and the third part,
The height of the first part is higher than the heights of the second part and the third part,
The UV curable top gel layer further includes a fourth part located between the first part and the second part,
The height of the fourth portion is lower than the height of the first portion and higher than the height of the second portion, semi-curing gel nail sticker.
According to claim 1,
The base film,
A semi-curing gel nail sticker made of an ultraviolet curable material containing at least one of a urethane acrylate oligomer having a functional group number of less than 6 and a monomer acrylate having a functional group number of 2 or more.
According to claim 1,
The base film,
A semi-curing gel nail sticker made of a thermosetting material made of a synthetic material based on polyol and isocyanate.
According to claim 1,
The adhesive layer includes at least one of acrylic, urethane and silicone,
A semi-curing gel nail sticker that is cured by heat energy and/or ultraviolet energy.
According to claim 1,
The release agent comprises at least one of silicone or fluorine, semi-curing gel nail sticker.
According to claim 1,
The UV-curable top gel layer includes at least one of an oligomer, a monomer, an initiator, and a surface lubricant, a semi-curable gel nail sticker.
According to claim 6,
The UV-curable top gel layer has a crosslinking density of 15% or more and less than 50% to remove surface viscosity, a semi-curable gel nail sticker.
According to claim 1,
The protective film is attached to the ultraviolet curable top gel layer through a silicone adhesive, a semi-curable gel nail sticker.
In manufacturing a gel nail sticker that is attached to an adherend and then cured by the user additionally applying ultraviolet energy,
Preparing a base film having flexibility and being cut by a certain external force;
forming an adhesive layer by applying an adhesive material under the base film for attachment to the adherend;
attaching a release film coated with a release agent under the adhesive layer;
forming a decorative layer on the base film;
Forming a UV curable top gel layer having a gel content of less than 50% on the decorative layer; and
Attaching a protective film that protects the UV-curable top gel layer,
After attaching to the adherend, post-curing occurs so that the crosslinking density becomes 100% by ultraviolet energy applied by the user,
Forming the UV curable top gel layer includes applying an UV curable top gel material,
The step of applying the UV curable top gel material,
disposing a pattern mask including a fingernail and toenail pattern on the decorative layer;
Forming a top gel material pattern having a shape corresponding to the pattern by applying a top gel material on the pattern mask,
The UV-curable top gel layer includes a first part as a center region, a second part as an edge region, and a third part as an edge region, the first part being located between the second part and the third part,
The height of the first part is higher than the heights of the second part and the third part,
The UV curable top gel layer further includes a fourth part located between the first part and the second part,
The method of manufacturing a semi-curing gel nail sticker, wherein the height of the fourth portion is lower than the height of the first portion and higher than the height of the second portion.
According to claim 9,
Forming the adhesive layer and forming the decorative layer,
A method of manufacturing a semi-curing gel nail sticker, in which one of the steps of forming the adhesive layer or the step of forming the decorative layer is performed first, and then the other step is performed.
According to claim 9,
The method of manufacturing a semi-curable gel nail sticker, wherein the UV-curable top gel layer forming step includes attaching an auxiliary film and removing the auxiliary film.
According to claim 9,
The method of manufacturing a semi-curing gel nail sticker, wherein the decorative layer forming step is performed using the pattern mask.
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