GEL NAIL STICKER AND METHOD FOR MANUFACTURING THE SAME
20230148731 · 2023-05-18
Inventors
Cpc classification
C08G18/42
CHEMISTRY; METALLURGY
B05D3/067
PERFORMING OPERATIONS; TRANSPORTING
C09J2301/122
CHEMISTRY; METALLURGY
C08G18/6216
CHEMISTRY; METALLURGY
International classification
Abstract
The present disclosure provides a method for manufacturing a gel nail sticker including: forming an adhesive layer by applying an adhesive on a first film layer 10; forming a base printing layer having at least one color on the first film layer; forming a first gel layer having flexibility on the base printing layer; and forming a second gel layer by mixing a resin composition having a —NCO functional group with a coating solution containing a resin composition having an —OH functional group and a UV curable composition on the first gel layer, in which the forming of the second gel layer includes forming the second gel layer including a urethane coating film having a urethane bond by causing a urethane reaction between the resin composition having the —OH functional group and the resin composition having the —NCO functional group.
Claims
1. A method for manufacturing a gel nail sticker, comprising: (a) forming an adhesive layer 20 by applying an adhesive on one side of a first film layer 10; (b) forming a base printing layer 30 having at least one color on the other side of the first film layer 10; (d) forming a first gel layer 50 having flexibility by applying a UV curing solution on the base printing layer 30 then UV curing; and (e) forming a second gel layer 60 in a semi-cured state, by mixing an isocyanate resin with a coating solution made by mixing a resin composition having a —OH functional group and a UV curable composition on the first gel layer 50, and by forming a urethane coating film by causing a urethane reaction between a resin having an —OH functional group and an isocyanate resin, wherein the step (e) comprises: forming a coating film by printing an ink formed by mixing a polyisocyanate resin with a coating solution containing a resin composition having —OH functional groups, a solvent consisting of a monomer and a solvent, and a UV curable composition on the first gel layer 50, and forming a semi-cured urethane coating film with a urethane bond by thermally drying the coating film to cause a urethane reaction.
2. The method of claim 1, further comprising: (c) forming a design layer 40 including at least one of foil paper, spot color, glitter powder, pearl powder, aluminum powder, and cubic powder between the base print layer 30 and the first gel layer 50.
3. The method of claim 2, wherein the coating solution includes at least one of acrylic polyol, epoxy polyol, polyester polyol, and polyether polyol resins.
4. The method of claim 3, wherein the forming of the urethane coating film in a semi-cured state having the urethane bond by thermally drying the coating film to cause the urethane reaction includes forming a solid thermosetting urethane coating film by drying the coating film at 30 to 120° C. for 5 to 80 minutes to cause the urethane reaction.
5. The method of claim 4, wherein the polyisocyanate resin is a polyisocyanate resin containing at least one of aromatic diisocyanate and aliphatic diisocyanate.
6. A gel nail sticker, comprising: a first film layer 10; an adhesive layer 20 on one side of the first film layer 10; a base printing layer 30 having the at least one or color on the other side of the first film layer 10; a first gel layer 50 formed on the base printing layer 30 so as to have ductility by applying a UV curing solution; and a second gel layer 60 having a urethane coating film in a semi-cured state formed on the first gel layer 50 by a urethane reaction, wherein the urethane coating film is formed by thermally drying an ink formed by mixing a polyisocyanate resin with a coating solution including a resin composition having a —OH functional group and a UV curable composition and has a urethane bond.
7. The gel nail sticker of claim 6, wherein the second gel layer 60 includes a urethane coating film in the semi-cured state including a monomer and a UV photoinitiator.
8. (canceled)
9. (canceled)
10. (canceled)
Description
BRIEF DESCRIPTION OF THE DRAWINGS
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[0037]
DESCRIPTION OF EXEMPLARY EMBODIMENTS
[0038] Hereinafter, preferred embodiments of the present disclosure will be described with reference to the accompanying drawings. Objects, features, and advantages of the present disclosure may be more readily understood by referring to the accompanying drawings and the following detailed description. In addition, when it is decided that, in describing the present disclosure, a detailed description for the known configurations or functions may obscure the gist of the present disclosure, the detailed description therefor will be omitted.
[0039] Referring to
[0040] a) forming an adhesive layer 20 by applying an adhesive on one side of a first film layer 10;
[0041] b) forming a base printing layer 30 having at least one color on the other side of the first film layer 10;
[0042] c) forming a design layer 40 including at least one of foil paper, spot color, glitter powder, pearl powder, aluminum powder, and cubic powder on the base print layer 30;
[0043] d) forming a first gel layer 50 having ductility by applying a UV curing solution on the design layer 40 and then UV curing the UV curing solution;
[0044] forming a second gel layer 60 in a semi-cured state on the first gel layer 50 by forming a coating film by mixing an isocyanate resin with a coating solution containing a resin composition having an —OH functional group and a UV curable composition to cause a urethane reaction between a resin having the —OH functional group and the isocyanate resin;
[0045] f) cutting the first film layer 10, the adhesive layer 20, the base print layer 30, the design layer 40, the first gel layer 50, and the second gel layer 60 into at least one gel nail sticker region by a first punching process; and
[0046] g) forming a second protective film layer 70 on the second gel layer 60 and cutting the at least one gel nail sticker region again by a second punching process.
[0047] Here, in step a), the first film layer 10 may be a transparent film layer, and is preferably a wide and transparent film, and may serve as a base for generating a plurality of gel nail stickers.
[0048] In step a), the adhesive layer 20 may be formed on the first film layer 10 to be attached to a nail.
[0049] The adhesive forming the adhesive layer 20 may be selected from the group consisting of vitamin B5, vitamin E, calcium, albumin, tocopheryl acetate, keratin, or eucalyptus.
[0050] In this case, when forming the adhesive layer 20, by implementing a plurality of air holes in the adhesive layer 20 to increase oxygen permeability to the adhesive layer through an air hole method, it is possible to implement a breathable feeling of attachment so as not to be stuffy after attached to a nail.
[0051] In detail, the adhesive layer 20 may implement an air hole by generating bubbles in the adhesive layer 20 using a porous silica air gel raw material.
[0052] In the step b), the base printing layer 30 having at least one color may be formed on the first film layer by ink printing.
[0053] For example, in the step b), a color or a pattern is printed on the other side of the first film layer, and may preferably be formed on the urethane film layer 10 through offset printing, inkjet digital printing, gravure printing, silk screen, and flexographic printing.
[0054] In the step c), the design layer 40 including at least one of foil paper, spot color, glitter powder, pearl powder, aluminum powder, and cubic powder may be formed on the base print layer 30.
[0055] In detail, the design layer 40 may include at least one of a spot color printing layer including foil paper or spot color, or a powder printing layer including at least one of glitter powder, pearl powder, aluminum powder, and cubic powder.
[0056] To this end, the spot color printing layer of step c) may be formed through a transfer process or silk screen printing. Here, the transfer process refers to an operation of increasing the durability and visual effect of prints by coating the PET film the on the print with adhesive glue.
[0057] In addition, the powder printing layer in the step c) may be formed by mixing aluminum powder, pearl powder, glitter powder or/and foil paper with ink, passing the mixture through a silk screen net, and printing the mixture.
[0058] In the step d), the first gel layer 50 having ductility may be formed on the design layer 40 by UV curing the UV curing solution.
[0059] The first gel layer 50 in the step d) may be formed by applying the UV curing solution on the design layer 40 or the base printing layer 30 and then performing the UV curing by irradiating UV light. In the process of manufacturing the first gel layer 50, the manufacturing time is very fast and the swelling of the coating film is high, so it is possible to easily control the thickness.
[0060] The thickness of the first gel layer 50 is preferably 5 to 350 μm to maintain a soft touch. In addition, since the thickness of the first gel layer 50 may more preferably be about 100 to 250 μm, a plurality of first gel layers 50 are formed by applying a plurality of UV curing solutions and UV curing processes.
[0061] In the step e), the second gel layer 60 in the semi-cured state is formed on the first gel layer 50 by forming a coating film by mixing an isocyanate resin with a coating solution containing a resin composition having a —OH functional group and a UV curable composition to cause a urethane reaction between the resin having the —OH functional group and the isocyanate resin.
[0062] In detail, in the step e), the isocyanate having the —NCO functional group is mixed with a coating solution containing a UV curable composition composed of a monomer, a solvent, and a UV light curable initiator based on a composition having a —OH functional group as a main base, and the mixture is applied on the first gel layer 50 and thermally dried to cause the urethane reaction so as to form the urethane coating film, thereby forming the second gel layer 60.
[0063] Here, the monomer may include at least any one of caprolactone acrylate, isobornyl acrylate, phenol (EO) acrylate, tetrahydrofurfuryl acrylate, cyclic trimethylpropane formal acrylate, and ethoxy ethoxy acrylate as a monofunctional group, 1,6-hexanediol diacrylate and tripropylene glycol diacrylate as a bifunctional group, trimethylolpropane triacrylate and pentaerythritol triacrylate as a trifunctional group, and pentaerythritol tetraacrylate and dipentaerythritol hexaacrylate as a multifunctional group.
[0064] In addition, the solvent may include at least any one of PMA, cyclohexanone, aromatic 100, aromatic 150, and dibasic ester which allow for easy silk screen printing.
[0065] In addition, the UV photoinitiator may be configured to include at least any one of hydroxy cyclohexyl phenyl ketone, hydroxy dimethyl acetophenone, methyl-[4 methylthio phenyl]-2-morpholine propanone, and 2,4,6-trimethylbenzoyl-diphenyl phosphine.
[0066] In an embodiment, the coating solution may be ink formed by mixing a composition having a —OH functional group with a UV curable composition based on at least one component of an acrylic polyol resin, a polyester polyol resin, a polyether polyol resin, and an epoxy polyol resin containing a solvent composed of a monomer and a solvent.
[0067] In the step e), a polyisocyanate resin containing at least one of aromatic diisocyanate and aliphatic diisocyanate having a —NCO functional group may be mixed with the ink thus configured and a coating solution may be applied as a coating film on the first gel layer 50 by silk screen printing.
[0068] In the step e), the coating film formed by the silk screen printing may be dried at 30 to 120° C. for 5 to 80 minutes to cause a urethane reaction, thereby forming a urethane coating film.
[0069] More preferably, in the step e), the coating film formed by the silk screen printing may be dried at 60 to 90° C. for 10 to 40 minutes to cause the urethane reaction, thereby forming a urethane coating film in a semi-cured state.
[0070] That is, when the heat drying time increases, the degree of urethane reaction of the composition may increase and thus the composition may be gradually cured.
[0071] In addition, in the embodiment, since the monomer is in a non-reacted state, the second gel layer 60 may maintain a semi-cured state.
[0072] The generated second gel layer 60 in a semi-hardened state has no stickiness, and therefore, is easy to process, and when attached to the nail, the second gel layer 60 may be easily trimmed according to the shape of the nail and may be maintained soft.
[0073] In detail, the gel nail sticker including the second gel layer 60 in the semi-hardened state according to primary thermal drying may be maintained soft to be easily trimmed according to the shape of the nail when attached to the user's nail.
[0074] In addition, when the user secondarily cures the monomer of the gel nail sticker with a UV lamp, a secondary radical crosslinking reaction is performed to maintain high gloss and hardness similar to nails. Therefore, the user has the advantage of being able to easily control the gloss, hardness, and ductility of the urethane coating film in the semi-cured state by adjusting the light irradiation time and light intensity of the UV lamp to adjust the degree of secondary curing.
[0075] In addition, the urethane reaction through the mixing of the compositions and the thermal drying method as described above is fast, and thus, good productivity is obtained. The second gel layer 60 in the semi-cured state has a strong bonding strength, so the coating film is not broken, the hardness is easy to control, and the impact resistance, abrasion resistance, water resistance, weather resistance, chemical resistance, and adhesion are excellent.
[0076] In addition, the second gel layer 60 in the semi-cured state formed as described above has strong durability and excellent luster while having physical properties similar to nails.
[0077] In the step f), the adhesive layer 20, the base print layer 30, the design layer 40, the first gel layer 50, and the second gel layer 60 formed on the first film layer 10 are cut by the punching process.
[0078] In the step f), the first film layer 10, the adhesive layer 20, the base print layer 30, the design layer 40, the first gel layer 50, and the second gel layer 60 may be cut into at least one gel nail sticker region by a first punching process.
[0079] The cutting in the step f) may be performed by removing an adhesive sheet other than a product after the adhesive sheet coating and a Thompson cutting operation.
[0080] The step g) may include forming a second protective film layer 70 on the second gel layer 60 and cutting the at least one gel nail sticker region again by a second punching process.
[0081] Meanwhile, in the step b), in detail, referring to
[0082] In the embodiment, since the base printing layer 30 is formed by the ink printing, it is possible to form a gel nail having a design of various colors and shapes.
[0083] In detail, the base print layer 30 may include a first base layer for indicating the overall background color of the gel nail sticker.
[0084] In addition, the first base layer may include a layer having a pattern that may be formed by the printing.
[0085] In addition, the base printing layer 30 may include a second base layer for determining an adhesion region of the design layer 40.
[0086] The design layer 40 may be randomly attached to the base printing layer 30 by rolling a roller while applying heat to the foil paper as illustrated in
[0087] However, when the design layer 40 is randomly formed, too much or too little foil paper is formed, so a difference in esthetics or shapes for each gel nail sticker may be too great.
[0088] In order to prevent this, the base printing layer 30 may control the degree of adhesion of the foil paper through the second base layer having adhesion to the foil paper or, conversely, not having an adhesion.
[0089] In addition, the design layer 40 may be omitted when sufficient design effect can be expressed only with the color of the base printing layer 30 in some cases.
[0090] In an embodiment, the UV curing printing layer 50 may include ink having adhesion to the foil paper, and may be formed to divide an effective region where the gel nail sticker is to be formed into at least two regions, have a relatively large area in a specific region, and have a relatively low region in other regions.
[0091] In this case, the second UV base layer may be randomly formed using a Gaussian function or may be formed to have a specific shape.
[0092] For example, referring to
[0093] When the design layer 40 is transferred to the second base layer 32 formed in this way, the probability that the foil paper adheres to the second base layer 32 having relatively high adhesion increases, and the probability that the foil paper adheres to the first base layer 31 on which the second base layer 32 is not formed decreases, so it is possible to control the ratio, shape, and the like of the foil paper attached to the first region A1 to the third region A3 within the effective region AA, respectively.
[0094] Meanwhile, when the base printing layer 30 is formed with a plurality of base layers in this way, a step is generated on a nail, and the foil paper or powder is attached to the second base layer 32 to further generate a step, so problems such as generation of air bubbles between the design layer 40 and the UV curing printing layer 50 may occur.
[0095] To prevent this, in another embodiment, the first base layer 31 and the second base layer 32 may be formed of the same layer.
[0096] In this case, the first base layer 31 and the second base layer 32 may be simultaneously formed through pattern printing.
[0097] That is, the first base layer 31 and the second base layer 32 may be formed by pattern-printing the first ink and the second ink, which has adhesive strength to the first ink, and includes an adhesive ink that is the same as or similar to the shape of the first ink, in different regions at the same time.
[0098] In this case, the first base layer 31 and the second base layer 32 do not have a step and form the same upper surface, and thus, the upper surface of the first base layer 31 has low adhesion and the second base layer 32 has low adhesion, so it is possible to form the design layer 40 more effectively than in the above-described embodiment.
[0099] In addition, since the second base layer 32 is printed only on the effective region AA where the gel nail sticker is formed and is not printed on a non-effective region UA where the gel nail sticker is not formed, so it is also possible to prevent expensive foil paper from adhering to the non-effective region UA.
[0100] In another embodiment, the second base layer 32 may be formed of ink having non-adhesion to the foil paper, and the first base layer 31 may be formed of an ink having adhesion to the foil paper.
[0101] When formed in this way, the probability that the foil paper is not formed on the second base layer 32, and the foil paper is formed on the first base layer 31 may be relatively very high. That is, in another embodiment, a spot color printing layer may be formed to have a specific shape while reducing randomness in attaching the foil paper.
[0102] For example, referring to
[0103] When the foil paper is transferred onto the second base layer 32 formed in this way, the probability that the foil paper is adhered to the first base layer 31 having adhesion increases, and the foil paper may not be attached to the region where the second base layer 32 is formed.
[0104] Accordingly, referring to
[0105] In this case, the base print layer 30 may be formed differently for each effective region AA where the gel nail sticker is to be formed, so that each gel nail sticker may have various design layers 40.
[0106] In detail, referring to
[0107] For example, referring to
[0108] That is, as illustrated in
[0109] When formed in this way, the gel nail sticker of the first effective region AA and the gel nail sticker of the second effective region AA may be formed to have different design layer 40 shapes, so that it is possible to manufacture gel nail stickers having various shapes within one set.
[0110] In addition, in another embodiment, the second base layer 32 may be printed on the entire of the non-effective area UA where the gel nail sticker is not formed, thereby preventing expensive foil paper from adhering to the non-effective area UA.
[0111] That is, the base printing layer 30 may serve as adhesive glue for adhering the foil paper in step c).
[0112] In addition, the second gel layer 60 in the step g) may be formed by being applied only on the gel nail sticker (for example, effective region) as the removed product.
[0113] Referring to
[0114] In this case, as the second gel layer 60 is formed in each of the separated effective regions AA, the gel nail sticker may be formed in a form more suitable for a nail.
[0115] In detail, referring to
[0116] That is, by controlling the thickness of the second gel layer 60, the curvature of the gel nail sticker increases from the center c to the side s of the gel nail sticker to more fit a shape of a person's nail, thereby more improving the esthetics of the gel nail sticker more.
[0117] In addition, referring to
[0118] That is, the tail part t of the flexible and transparent second gel layer 60 is deformed and cured according to the shape of the nail when cured on the nail, so the perimeter of the gel nail sticker may be naturally connected around the nail.
[0119] To this end, the step e) may be performed multiple times to form the second gel layer 60, and when the step e) may be performed multiple times, the urethane coating film may be formed to protrude while the formation region of the urethane coating film is reduced.
[0120] That is, the process of forming the first urethane coating film in the first region corresponding to the nail primarily, the process of forming a second urethane coating film in the second region reduced by a predetermined peripheral region than the first region, etc., are repeated, so the urethane coating film may be formed to protrude toward the center c.
[0121] In addition, the present disclosure provides a gel nail sticker manufactured through a method for manufacturing a gel nail sticker.
[0122] In addition, the present disclosure provides a gel nail sticker including:
[0123] a first film layer 10:
[0124] an adhesive layer 20 on one side of the first film layer 10;
[0125] a base printing layer 30 having at least one color on the other side of the first film layer 10;
[0126] a design layer 40 for expressing primary aesthetics;
[0127] a first gel layer 50 having ductility for expressing secondary aesthetics; and
[0128] a urethane coating film in a semi-cured state formed by a urethane reaction.
[0129] The urethane coating film may have a semi-cured state by curing only a portion of the coating solution through a primary urethane reaction with isocyanate.
[0130] In addition, the second gel layer 60 may include a urethane coating film in a semi-cured state and a UV light curing initiator due to a monomer.
[0131] The urethane coating film in the semi-cured state may be easily attached to user's nails in a double curing method by performing a secondary UV curing reaction through secondary LED UV curing by the user, and may exhibit a beautiful gloss.
R×r/17=R′×r′/42 [Equation 1]
[0132] R: Content of polyol resin
[0133] R′: Content of polyisocyanate resin
[0134] r: Content ratio of —OH group of polyol resin
[0135] r′: Content ratio of —NCO group of polyisocyanate resin
[0136] In this case, the urethane coating film needs to be mixed in an equivalent ratio of the above Equation 1 so that the ratio of the isocyanate and the coating solution may be reacted by equivalent to equivalent in order to be manufactured in a semi-solid.
[0137] The thermosetting composition of the coating solution constituting the urethane coating film is completely bonded by the urethane reaction by the isocyanate, but the hardness and durability can be strengthened by preventing complete hardening by the monomer and then performing the LED UV curing by the user.
[0138] The urethane coating film prevents the occurrence of deformation, scratches, and dents of the gel nail sticker, and imparts the flexibility to the sticker, thereby achieving the easy attachment to the user's curved nail and preventing the phenomenon of detachment from the nail.
[0139] The adhesive agent in contact with the side surface of the nail may include a nutritional enhancing component and an antibacterial component for nail health, and the nutritional component may be preferably selected from the group consisting of vitamin B5, vitamin E, calcium, albumin, tocopheryl acetate, keratin, or eucalyptus.
[0140] The gel nail sticker may have a modulus value of 1 to 50 in order to implement elastic force to enhance adhesion to the curved surface of the nail by implementing a chewy and soft texture and to provide a fitting force suitable for the shape of the tip of the nail.
[0141] The thickness of the finished gel nail sticker is preferably 200 to 500 and the lowest thickness from the cuticle line to the center of the nail is 200 μm and the highest thickness thereof is 500 μm to fit the curve of the nail.
[0142] The high point of the nail is realized by adjusting the thickness of the gel nail sticker. The process of realizing the thick feeling is possible both by a method for mechanically using a pressure tube and a hand squeezing method.
[0143] Hereinabove, a specific embodiment of the present disclosure has been described above. However, it will be understood by those of ordinary skill in the art to which the present disclosure pertains that the present disclosure can be variously modified and changed without changing the gist of the present disclosure.
[0144] Therefore, since the embodiments described above are provided to completely inform the scope of the present disclosure to those with ordinary skill in the technical field to which the present disclosure pertains, it should be understood that the embodiments are exemplary and not limited in all respects, and the present disclosure is only defined by the scope of the claims.
INDUSTRIAL AVAILABILITY
[0145] Since the present disclosure relates to a method for manufacturing a gel nail sticker and a gel nail sticker manufactured by the method, the present invention has potential for industrial applicability.