Adhesive gel nail and its manufacturing method

Abstract

The present invention provides an adhesive gel nail that significantly improves colorability, durability, and breathability, and a method for manufacturing the same. The adhesive gel nail includes an adhesive layer, a color base layer formed on the adhesive layer, and a color layer formed on the color base layer.

Description

[Technical field]

[0001] The present invention relates to an adhesive gel nail and a method for manufacturing the same, and more particularly to an adhesive gel nail having significantly improved comfort and colorability and a method for manufacturing the same. [Background technology]

[0002] Generally, nail art has been done by applying pigments such as nail polish of various colors to the fingernails or toenails, or by attaching accessories such as beads or jewels to the nails.

[0003] However, the method of applying such liquid pigments to fingernails or toenails may cause inconvenience to users because it takes a long time for the pigment to harden after application. Also, when attaching accessories, it takes time for the adhesive to completely harden, and even after attachment is completed, there is a problem that the accessories may easily fall off due to a small impact.

[0004] To solve these problems, a method of attaching nail stickers to the user's nails or toenails has been used instead of directly applying pigment to the user's nails or toenails. With this method, the user can decorate the nails or toenails by simply attaching stickers to the nails or toenails without having to apply pigment and wait for it to harden, allowing the user to perform nail art much faster and easier than with the existing method.

[0005] In addition, recently, methods have been proposed in which a soft, semi-solid sticker is applied to the nail or toenail and then cured with ultraviolet light to maintain the shape of the sticker attached to the nail or toenail, such as those disclosed in Patent Documents 1-4.

[0006] However, in all of Patent Documents 1-4, there is a problem that the color layer is formed on the adhesive layer or the glue layer. In other words, the color layer in gel nails plays an important role in determining the color of the gel nail sticker, but in Patent Documents 1-4, the color layer is formed directly on the adhesive layer or the glue layer, which causes a problem of reduced colorability.

[0007] In addition, if the color layer is cured later due to the softness of the adhesive layer, cracks may occur. For this reason, Patent Document 5 discloses a gel nail sticker that prevents the color layer from being cured by ultraviolet light. However, to prevent curing, a light stabilizer must be used separately in the process of forming the color layer, which increases the manufacturing cost.

[0008] In addition, if nail stickers are left on for a long period of time, oxygen cannot be supplied for a long period of time, which can harm the health of the nails, and therefore there is a demand for improvements in adhesives or glues. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Republic of Korea Patent No. 10-2024663 (2019.09.24) Gel nail sticker [Patent Document 2] Republic of Korea Patent No. 10-2024666 (2019.09.24) Manufacturing method of gel nail sticker [Patent Document 3] Republic of Korea Patent Registration No. 10-11949267 (2019.02.19) Gel nail sticker and manufacturing method thereof [Patent Document 4] Republic of Korea Patent No. 10-1797203 (2017.11.15) Semi-cured gel nail sticker for nail art and its manufacturing method [Patent Document 5] Republic of Korea Patent No. 10-1982125 (2019.05.24) Gel nail sticker and manufacturing method thereof Summary of the Invention [Problem to be solved by the invention]

[0010] The present invention has been made to solve the problems of the prior art, and an object of the present invention is to provide an adhesive gel nail having significantly improved colorability or durability, and a manufacturing method thereof. Another object of the present invention is to provide an adhesive gel nail and a manufacturing method thereof that have high breathability and minimize the adverse effects on fingernails and toenails. [Means for solving the problem]

[0011] An adhesive gel nail according to one aspect of the present invention includes an adhesive layer, a color base layer formed on the adhesive layer, and a color layer formed on the color base layer.

[0012] At this time, the color base layer may be made of a urethane material.

[0013] Also, the color base layer may have air holes formed therein.

[0014] Also, the color base layer may be formed in a mixed structure of open cells and closed cells.

[0015] In addition, the color base layer may have a surface roughness smaller than that of the adhesive layer.

[0016] The adhesive layer may also contain at least one of vitamins, calcium, eucalyptus, cypress water, and natural herbs.

[0017] Also, the color layer can be cured by ultraviolet light while in contact with the color base layer.

[0018] In addition, the adhesive gel nail further includes a gel coating layer formed on the color layer, and the gel coating layer may include a UV gel coating layer and an LED gel coating layer.

[0019] Meanwhile, a method for manufacturing an adhesive gel nail according to one aspect of the present invention includes the steps of forming an adhesive layer, forming a color base layer on the adhesive layer, and forming a color layer on the color base layer.

[0020] At this time, in the step of forming the color base layer, a urethane film having a surface roughness smaller than that of the adhesive layer can be attached to the adhesive layer. Effect of the Invention

[0021] In the adhesive gel nail and the manufacturing method thereof according to the present invention, the color base increases the coloring property and resolution of the color layer.

[0022] In addition, the surface roughness of the color base is smaller than that of the adhesive layer, so that the color base layer can closely support the color layer even when the color layer is hardened while increasing the printing resolution, thereby significantly increasing the durability of the color layer and the entire gel nail. [Brief description of the drawings]

[0023] [Figure 1] 1 is a cross-sectional view of an adhesive gel nail according to an embodiment of the present invention. [Diagram 2] 2 is a diagram showing the gel coating layer in FIG. 1 in more detail. [Diagram 3] 4 is a flow chart showing a method for manufacturing an adhesive gel nail according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Hereinafter, the present invention will be described in detail so that those skilled in the art can easily carry out the present invention. Since the present invention can be modified in various ways and has various embodiments, specific embodiments will be described in detail with reference to the drawings. However, this is not intended to limit the present invention to the specific embodiments, and includes all modifications, equivalents, and alternatives within the spirit and technical scope of the present invention. Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which this invention pertains. Terms, such as those commonly used and predefined, have a meaning consistent with the meaning they have in the context of the relevant art, and are not intended to be ideal or overly formal unless expressly defined in this application.

[0025] An adhesive gel nail according to an embodiment of the present invention will now be described. Fig. 1 is a cross-sectional view of an adhesive gel nail according to an embodiment of the present invention, and Fig. 2 is a view showing the gel coating layer in Fig. 1 in more detail.

[0026] 1, an adhesive gel nail 100 according to an embodiment of the present invention includes an adhesive layer 20, a color base 30, a color layer 40, and a gel coating layer 60. The adhesive layer 20 may be formed on a base film 10 for manufacturing purposes, and may further include a separate printing layer 50 in addition to the color layer 40. Also, as shown in the figure, a protective film 70 may be added to protect the gel coating layer 60.

[0027] First, the base film 10 serves as a support for forming the adhesive layer 20 and may be located at the bottom of the adhesive gel nail 100. The base film 10 may be made of release paper and may be removed when using the adhesive gel nail 100. More specifically, the base film 10 may include a PET material with a silicone modified processing base material.

[0028] The adhesive layer 20 is made of at least one of acrylic water-based, acrylic oil-based, and UV-curable adhesives, and refers to the portion that is directly attached to the user's fingernails or toenails. The adhesive layer 20 is formed by coating on the base film 10.

[0029] The adhesive layer 20 may contain nutritional components for caring for the nails and toenails as an anti-fungal nutritional glue layer, and antibacterial components for protecting the nails from bacteria, mold, and the like.

[0030] More specifically, the adhesive layer 20 contains at least one of vitamins, calcium, eucalyptus, cypress water, and natural herbs. In this case, the nutritional supplement may contain vitamin B5, vitamin E, calcium, etc., and the antibacterial component may contain eucalyptus, cypress water, and natural herbs.

[0031] That is, since the adhesive gel nail according to the present embodiment contains both nutritional enhancing ingredients and antibacterial ingredients, it can protect the nails and toenails of users that are damaged by frequent self-nail treatments and minimize damage to the nail surface.

[0032] The color base layer 30 is formed on the adhesive layer 20, and can be formed to generate air holes by adding aerosol to the urethane raw material. Alternatively, the color base layer can be formed with an internal structure in which open cells and closed cells are mixed by using a mixture of ester polymer and ether polymer as the urethane raw material, and it is preferable to form the volume percentage of open cells to be 5% or more to ensure minimum breathability.

[0033] Due to the provision of such a color base layer 30, the adhesive gel nail 100 can have high oxygen permeability and breathability, so that the user can feel comfortable and not feel cramped when applying the gel nail 100 to the nails or toenails. At this time, the urethane sheet layer 30 can have a thickness of 20 to 50 um.

[0034] Moreover, the color base layer 30 may be made of a white color series while being located under the color layer 40. Therefore, in the adhesive gel nail 100 according to the present embodiment, in order to show a desired hue in the color layer 40, CMYK or other color inks mixed with other colors are applied onto the white color base layer 30, so that the saturation of the hue is maximized and the expressiveness is increased, and the hue resolution of the color layer is increased, so that the pattern of the print layer 40 can be more clearly confirmed.

[0035] Furthermore, in this case, the surface roughness of the color base layer 40 is formed to be smaller than that of the adhesive layer 20. Therefore, if the color layer 40 or the printing layer 50 is applied directly to the adhesive layer 20, the printing resolution will be significantly reduced due to the surface roughness of the adhesive layer 20. However, if the color base layer 30 made of a urethane film is first adhered to the adhesive layer and a color or pattern is printed thereon, the printing resolution can be maximized. Therefore, in addition to the increase in saturation, the increase in resolution allows for the realization of more microscopic patterns and designs.

[0036] Furthermore, the color base layer 30 supports the color layer 40 when the color layer 40 is cured by ultraviolet light. That is, since the color base layer 30 has a breathable structure as described above, it is flexible and has a tensile strength significantly greater than that of the adhesive layer 20. Therefore, when the color layer 40 is cured, it is deformed in response to the change in the bulk of the color layer 40, reducing the occurrence of cracks in the color layer while maintaining the bonding strength with the adhesive layer 20 on the other side, thereby significantly increasing the durability of the gel nail 100.

[0037] The color layer 40 may be formed by printing color inks at a certain thickness on the color base layer 30. Color inks used in the color layer 40 include CMYK, where C is blue, M is red, Y is yellow, and K is black. The color layer 40 may be formed by using such color inks alone or by appropriately mixing them.

[0038] At this time, a typical color layer 40 contains a very small amount of light stabilizer to prevent the color layer 40 from hardening quickly due to external ultraviolet rays or indirect ultraviolet rays from fluorescent lights, LEDs, etc. However, the adhesive gel nail 100 according to this embodiment ensures durability even in this case due to the color base layer 30 described above, so production costs can be significantly reduced by not using a light stabilizer.

[0039] The printing layer 50 generally refers to printing a nail pattern, and the printing layer 50 refers to a design expressed by various printing methods, gold foil, silver foil, aluminum foil, glitter, etc. In this case, the printing layer 50 can be formed by methods such as silk screen printing, flexographic printing, offset printing, digital printing, and gravure printing. Meanwhile, the gel coating layer 60 includes a UV gel coating layer 61 and an LED gel coating layer 65 .

[0040] The UV gel coating layer 61 can be formed by applying a UV gel coating liquid containing a mixture of oligomer, monomer, and short wavelength initiator on the color layer 40 or the print layer 50 and drying it by a UV curing method. For example, the UV gel coating layer 61 can be formed using a UV gel coating liquid containing a mixture of 40% to 60% oligomer, 30% to 55% monomer, and 2% to 10% short wavelength initiator. At this time, the oligomer can be urethane, acrylic, acrylic epoxy, polyester series oligomer, etc., and the short wavelength initiator can be TPO, 184, etc. Also, the applied UV gel coating liquid can be dried by a UV curing method to form the UV gel coating layer 61.

[0041] In the case of the UV gel coating layer 61, if the oligomer exceeds the standard value (i.e., if the oligomer content exceeds 60%), the gel nail 100 may become too soft, causing deformation of the gel nail, and may cause damage such as scratches and dents, resulting in poor staying power. Therefore, it is necessary to mix the oligomer content so as not to exceed the possible 60%.

[0042] On the other hand, when the oligomer content is below the standard value (i.e., when the oligomer content is less than 40%), the gel nail 100 becomes very hard and is difficult to apply to the bent nails of ordinary consumers. As a result, the adhesion is reduced and the gel nail 100 may come off (separate from the fingernail or toenail), or deformation may occur due to the lack of adhesion. Therefore, it is preferable to mix the oligomer content to 40% or more.

[0043] On the other hand, if the monomer content in the UV gel coating layer exceeds the standard value (e.g., 55% content), the flexibility and elongation of the product may decrease, and the adhesion (adhesion) when applied to bent nails or toenails may be poor, resulting in a decrease in longevity. On the other hand, if the monomer content is less than the standard value (e.g., 30%), the adhesive gel nail 100 becomes very hard, resulting in poor adhesion (adhesion) when applied to bent nails and a decrease in longevity (adhesion to nails or toenails), so it is preferable to mix the monomer in the range of 30% to 55%.

[0044] Here, the adhesion to the fingernails or toenails means that the lower adhesive layer (not shown) of the base film 10 of the gel nail 100 adheres to the bent fingernails or toenails of the user without falling off. By improving the adhesion of the lower adhesive layer, the adhesive gel nail 100 can be made to adhere well to the fingernails or toenails.

[0045] In addition, if the short wavelength initiator exceeds 10% in the UV gel coating layer 61, the product hardens very quickly and natural hardening may occur during the manufacturing and distribution process, making it difficult to apply the gel nail 100 to the user's bent nails or toenails, and even if applied, the gel nail 100 may easily peel off from the nail or toenail. To prevent this phenomenon, the short wavelength initiator may be mixed in the UV gel coating layer so that it does not exceed 10%.

[0046] On the other hand, if the short wavelength initiator is less than the standard value (e.g. 2%), the curing speed will decrease and the product will lose its toughness. As a result, foreign matter can easily adhere to fingernails and toenails, deformation can easily occur, and durability can decrease. Therefore, it is recommended that the content of the short wavelength initiator used in the UV gel coating layer be adjusted to 2% or more.

[0047] The LED gel coating layer is applied on the UV gel coating layer, and may be formed by applying an LED gel coating liquid containing a mixture of an oligomer, a monomer, a long-wavelength initiator, and cellulose, and drying the applied liquid. For example, the LED gel coating layer may be formed using an LED gel coating liquid containing a mixture of 15% to 40% oligomer, 20% to 30% monomer, 0.1% to 0.5% long-wavelength initiator, and 30% to 55% cellulose. The applied LED gel coating liquid may be dried at 60°C to 100°C for about 30 to 60 minutes to form an LED gel coating layer. In this way, the UV gel coating layer and the LED gel coating layer may function as transparent coating layers to protect the printing layer 40. For example, the LED gel coating layer 65 may have a thickness of 220 microns.

[0048] In the case of the LED gel coating layer 65, if the monomer exceeds a standard value (e.g., 30%), the gel nail 100 may become sticky and lose its toughness. In addition, the gel nail 100 may get on the user's hands and the shape of the gel nail 100 may be damaged. The hardening speed of the product may also be significantly reduced. To prevent this phenomenon, it is preferable to keep the monomer content in the LED gel coating layer at 30% or less. On the other hand, if the monomer content is less than 20%, the gel nail 100 may become very hard and when applying the gel nail 100 to a bent nail, the adhesion may decrease and the durability may also decrease. Therefore, it is preferable to keep the monomer content at 20% or more.

[0049] Meanwhile, if the oligomer content in the LED gel coating layer exceeds 40%, it may be easily cured by ultraviolet light. That is, natural curing may easily occur during the manufacturing and distribution process of the gel nail 100. As a result, when a user removes the gel nail 100 after the LED gel coating layer has cured, it may not be completely removed and may crack and peel off. In such a case, damage to the nail may occur. On the other hand, if the oligomer content is less than 15%, the curing speed during UV curing is very slow and curing may not be complete. If the uncured product is used in such a state, the gel nail 100 may be severely damaged. As a result, the longevity of the gel nail 100 may be reduced due to deformation, loss of gloss, foreign matter, etc.

[0050] In addition, if the long wavelength initiator in the LED gel coating layer 65 exceeds 0.5%, natural hardening may occur easily when exposed to light in real life, making it difficult to apply the gel nail 100 to a user's bent nails or toenails, and the gel nail 100 may easily fall off after application. If the long wavelength initiator is less than 0.1%, the hardening speed may be very slow and the strength of the gel nail 100 may decrease. As a result, foreign matter may easily adhere, deformation may easily occur, and durability may decrease.

[0051] Also, if the cellulose content of the LED gel coating layer is more than 55%, the elongation rate of the gel nail 100 will be very low, making it difficult to apply to curved nails or toenails. In other words, the gel nail 100 will not adhere completely to the user's nails or toenails and will fall off easily, which may reduce the adhesiveness and durability of the gel nail 100. Therefore, it is preferable to mix cellulose in the LED gel coating layer to 55% or less. On the other hand, if the cellulose content is less than 30%, the function of making the gel nail 100 in a semi-solid state may be reduced, so the cellulose content should be 30% or more.

[0052] Meanwhile, the monomer, oligomer, and long wavelength initiator used in the adhesive gel nail 100 according to the first embodiment of the present invention are all liquid products that change from liquid to solid only when exposed to UV rays. At this time, cellulose can perform the function of turning the liquid gel nail into a semi-solid state.

[0053] In addition, the adhesive gel nail 100 according to an embodiment of the present invention may be formed into a fingernail or toenail pattern by cutting the adhesive layer 20, color base layer 30, color layer 40, UV gel coating layer 61, and LED gel coating layer 65 formed on the base film 10 using a punching process. After the punching process, a cutting process may be further performed to cut the base film 10 and produce the adhesive gel nail.

[0054] A method for manufacturing an adhesive gel nail according to an embodiment of the present invention will now be described with reference to Fig. 3, which is a flow chart showing a method for manufacturing an adhesive gel nail according to an embodiment of the present invention.

[0055] Referring to FIG. 3, the manufacturing method of adhesive gel nails according to this embodiment includes the steps of forming an adhesive layer on a base film (S10), forming a color base layer on the adhesive layer (S20), forming a color layer on the color base layer (S30), forming a printing layer on the color layer (S40), and forming a gel coating layer on the printing layer.

[0056] At this time, we will omit the overlapping explanations from the previous article, but in this embodiment, it is most important to form a color base layer on the adhesive layer. At this time, unlike the case where the color layer is formed under the gel coating layer after it is applied, in this embodiment, the adhesive layer is formed first and then the color layer is formed on top of it, which has a major drawback in that the hardening of the color layer induces cracks. Therefore, although it plays the role of a color base in the white series, the surface roughness is smaller than the adhesive layer, so that even when the color layer is hardened while increasing the printing resolution, the color base layer adheres and supports the color layer, significantly increasing the durability of the color layer and the entire gel nail.

[0057] As described above, the present specification and drawings disclose preferred embodiments of the present invention, and although specific terms are used, these are used in a general sense only to easily explain the contents of the present invention and to aid in the understanding of the invention, and are not intended to limit the scope of the present invention. It is obvious to those skilled in the art to which the present invention pertains that other modifications based on the technical ideas of the present invention can be implemented in addition to the embodiments disclosed herein. [Explanation of symbols]

[0058] 100 Adhesive gel nails 10 Base film 20 Adhesive layer 30 Color Base Layer 40 Color Layers 50 printing layers 60 gel coating layers 61 UV gel coating layers 65 LED Gel Coating Layers 70 Protective Film

Claims

1. An adhesive layer; a color base layer formed on the pressure-sensitive adhesive layer; a color layer formed on the color base layer; Including, the surface roughness of the color base layer is smaller than the surface roughness of the adhesive layer; The color layer further includes a gel coating layer formed on the color layer, the gel coating layer including a UV gel coating layer and an LED gel coating layer; The UV gel coating layer contains 40% to 60% oligomer, 30% to 55% monomer, and 2% to 10% short wavelength initiator, and the LED gel coating layer contains 15% to 40% oligomer, 20% to 30% monomer, and 0.1% to 0.5% long wavelength initiator. An adhesive gel nail.

2. The color base layer is made of a urethane material. The adhesive gel nail according to claim 1 .

3. The color base layer has air holes formed therein. The adhesive gel nail according to claim 2.

4. The color base layer is formed in a mixed structure of open cells and closed cells. The adhesive gel nail according to claim 3.

5. The adhesive layer contains at least one of vitamins, calcium, eucalyptus, cypress water, and natural herbs. The adhesive gel nail according to claim 1.

6. The color layer is cured by ultraviolet light while in contact with the color base layer. The adhesive gel nail according to claim 1.

7. forming an adhesive layer; forming a color base layer on the adhesive layer; forming a color layer on the color base layer; Including, The surface roughness of the color base layer is made smaller than the surface roughness of the pressure-sensitive adhesive layer, The color layer further includes a gel coating layer formed on the color layer, the gel coating layer including a UV gel coating layer and an LED gel coating layer; The UV gel coating layer contains 40% to 60% oligomer, 30% to 55% monomer, and 2% to 10% short wavelength initiator, and the LED gel coating layer contains 15% to 40% oligomer, 20% to 30% monomer, and 0.1% to 0.5% long wavelength initiator. A method for producing an adhesive gel nail.

8. In the step of forming the color base layer, a urethane film having a surface roughness smaller than that of the adhesive layer is attached to the adhesive layer. A method for producing the adhesive gel nail according to claim 7.

Images