JP2001275740A - Base material for artificial nail and artificial nail using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a base material for artificial nails, which can be printed clearly with optional designs and excels in durability of the surface, and artificial nails using this base material. SOLUTION: A sheet or a film, which is big enough to exhibit plural types of prints of artificial nails with colors, patterns, figures and so on, is formed in order with a clear surface base material 2, a clear print recipient layer 3 and a coloring layer 4 through which ink can penetrate vertically, each artificial nail is formed in curved shape on it.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base material for artificial nails, and more particularly, to a base material for artificial nails capable of printing any design more clearly and having excellent surface durability, and a method for using the same. Regarding false nails.

[0002]

2. Description of the Related Art In recent years, nail art for designing nails has been attracting attention because of a remarkable increase in fashion consciousness. One way to design nails is to freely design their own nails with colors, figures, letters, etc., but it is very cumbersome and requires special skills to give it a good appearance. In particular, it was difficult to design a dominant hand nail.

[0003] A nail salon in which specialists design nails of applicants has also been launched, but the cost burden on the user has increased, and it has not been an economical method. For that reason, instead of designing raw nails recently, artificial nails made of synthetic resin (fake nails) are designed,
Attachment to own nails has also been performed using double-sided adhesive tape, etc., but in this case too, it must be done with the design of fine figures, letters, etc. Was also troublesome.

[0004] In consideration of the simplicity that anyone can use, stickers and the like that can be attached to the surface of raw nails and artificial nails have been developed, but it is difficult to apply any design, and the unique artistic effect is exhibited. I couldn't do that. Under such circumstances, the present inventor has developed a false nail base and a false nail using the same, which the user can arbitrarily design, and filed a patent application (Japanese Patent Application Laid-Open No. H11-8962).
No. 6). This false nail has a peeling adhesive means on one side, and a printing device for a substrate made of a film or a sheet having a size capable of giving a false nail display such as a color, a figure, or a character on the other side. By using the false nail user, an image for false nail display of an arbitrary color, figure, character, etc. was selected and determined from the image data in the printing apparatus, and the image was immediately printed and displayed on the base material. Thereafter, each of the printed false nail shapes is formed into a curved shape.

For the printing of false nails, the use of printing methods such as thermal transfer, PPC, pen plotter, and ink jet has been studied. Particularly, for full-color display, fine printing of photographs and the like is performed at high speed and at high speed. Attention has been paid to inkjet printing that can be formed at low cost. However, in the ink-jet printing, when printing is performed directly on the surface of the substrate, there is a problem that the fixing strength of a printed image is inferior, and the surface friction is particularly weak.

By the way, as shown in FIG. 6, a so-called back coat type ink receiver having an ink receiving layer 21 for receiving and fixing a printed image on the back side of a transparent surface substrate 20 is provided. Has been proposed. In such a back coat type ink receiver, the formed printed image is protected by the surface substrate 20. Ink receiving layer 2
No. 1 is formed by applying a coating liquid for an ink receiving layer mainly containing a white pigment and a resin having an ink receiving property, followed by drying and solidification.

[0007]

However, since the entire ink receiving layer 21 contains a resin having an ink receiving property, that is, a resin having a function of fixing the ink, as shown in FIG. In some cases, the ink 23a injected into the ink receiving layer 21 is fixed before reaching the surface substrate 20, and in this case, the printed image viewed from the surface substrate 20 side is Since the white pigment contained in 21 causes white blurring and lacks clearness of display, the impression as a print for false nails is weakened, and it is difficult to obtain a print that can be viewed.

By increasing the amount of ink injected into the ink receiving layer 21, the ink can reach the surface substrate 20, but the ink 23a that has reached the surface substrate 20 not only penetrates in the thickness direction, but also There is a problem that delicate printing like a fine pattern cannot be performed because the ink spreads to the periphery along the interface with the base material 20, that is, bleeds. An object of the present invention is to protect a print image from surface friction and the like, when a print receiving layer provided on the back surface of a transparent surface substrate is printed from the back surface by an inkjet method or the like, the print image is printed. It is an object of the present invention to provide a false nail base material which is finer and clearer than before and has no blurring or bleeding, and a false nail using the same.

[0009]

Means for Solving the Problems and Effects of the Invention In view of the above problems, the present inventor has made various studies on the structure of the base material for false nails, and as a result, has completed the present invention. That is, the present invention provides: 1) a film or sheet having a size capable of providing a plurality of false nail indications such as colors, figures, characters, and the like, a transparent print receiving layer, a thickness direction, And a coloring layer through which ink can pass, in this order, 2) a false nail according to the above 1), wherein the glass transition temperature of the surface substrate is 45 to 120 ° C. The base material for nails, 3) The base material for false nails according to the above 1), wherein the thickness of the surface base material is 100 to 700 μ, 4) The print receiving layer is a layer of a water absorbent resin according to the above 1). 5) The coloring layer contains a coloring agent and a binder resin, and the ratio of the coloring agent to the binder resin is 5: 1 to 20: 1 by weight.
The base material for false nails according to the above 1), 6) the base material for false nails according to the above 5), wherein the colorant is a white pigment, 7) the white pigment is acicular crystals of potassium titanate. 8) The artificial nail base according to the above item 6), 8) The artificial nail base according to the above item 1), wherein the print receiving layer is provided with artificial nail indicators such as colors, figures, and characters. An artificial nail characterized in that it is formed in a curved shape as an individual artificial nail shape in accordance with the display shape. 9) Formed in a cutting notch base material that can be broken from the base material along the individual artificial nail shape. 8) The false nail according to the above item 8), and 10) the artificial nail according to the above item 8), wherein the coloring layer is provided with an adhesive layer and release paper.

The base material for false nails of the present invention is characterized in that, as described in the above item 1), a colored layer that allows ink to pass in the thickness direction is formed on the transparent print receiving layer.
When printing an artificial nail design or the like, the printing ink passes through this colored layer and is formed on the print receiving layer. According to the present invention, a print receiving layer, which was conventionally a single layer as an artificial nail base, is replaced with a colored layer serving as a background (back) of a printed image,
Separated from the transparent ink receiving layer, the coloring layer has a function to pass ink in the thickness direction, so ink printed from the back of the coloring layer passes through the coloring layer and reaches the printing receiving layer as it is As a result, a print image is formed.

At this time, even if the ink does not stay in the print receiving layer and reaches the interface with the surface substrate, the ink receiving layer is transparent, so that the ink is viewed from the surface substrate side as in the related art. A clear image can be obtained without the problem that the printed image is white and blurred. ADVANTAGE OF THE INVENTION According to the base material for false nails of this invention, while maintaining the characteristic of the back coat type ink receptor which is especially strong against surface friction, it is finer and clearer than before without white blurring or blurring of the printed image. Printing is possible.

[0012] Furthermore, the false nail manufactured from this substrate has a structure in which the print receiving layer is protected by the transparent surface substrate, so that the image is not stained or erased by friction during use. .

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a permanent nail base 1, and FIG. 2 is an enlarged sectional view thereof. As shown in FIG. 2, the artificial nail base material 1 of this embodiment
The transparent print receiving layer 3 and the coloring layer 4 are laminated in this order on the back surface of a film-shaped or sheet-shaped transparent surface substrate 2.

As the surface substrate 2, for example,
cm x about 6cm in height, about 0.2-0.3mm in thickness,
Considering the number of fingers on both hands or toes, or considering the number corresponding to the size of the nails, the size that can display multiple false nails such as colors, graphics, photos, characters, etc. It is preferable to use a thermoplastic resin film or sheet that can have plasticity when formed on individual false nails and can be easily manufactured and processed. In particular, a thermoplastic resin having a glass transition temperature of 45 to 120 ° C is preferable.

As the thermoplastic resin forming the film or sheet, a conventionally known thermoplastic resin can be used without particular limitation. For example, acrylic resin, polyethylene resin, polypropylene resin, polystyrene resin, polyvinyl chloride resin, polyester resin,
Examples include polyethylene terephthalate resin, acrylonitrile butadiene styrene copolymer resin, and epoxy resin. In particular, polyvinyl chloride resin, acrylic resin, polyethylene terephthalate resin, and acrylonitrile butadiene styrene copolymer resin are preferable because they are plasticized at a relatively low temperature and have a beautiful appearance.

On the back surface of the surface substrate 2 (that is, the surface opposite to the surface seen when the false nail is manufactured), a print receiving layer 3 is laminated and coated. The print receiving layer 3 contains a cationic acrylic resin and an acrylic resin having a film forming property. Among them, the cationic acrylic resin is
It is used to bond strongly with an anionic colorant in the ink used for print display and to firmly fix the print display. Specific examples thereof include an acrylic single polymer using a monomer having a cationic group. A coalescence or a copolymer is mentioned.

The monomer having a cationic group includes
For example, dimethylaminoethyl acrylate, dimethylaminoethyl methacrylate, diethylaminoethyl acrylate, diethylaminoethyl methacrylate, methylethylaminomethyl acrylate, methylethylaminoethyl methacrylate, diethylaminostyrene,
Examples of the monomer include a monomer having a primary to tertiary amino group in a side chain, such as methylethylaminostyrene, and a quaternary ammonium salt thereof.

Other monomers having no cationic group include, for example, C ₁ -C ₆ alkyl acrylate,
It can be appropriately selected from C ₁ -C ₆ alkyl methacrylate, styrene and the like. Further, a monomer having a hydroxyl group may be used in order to enhance the ink absorbency of the print receiving layer 3. Specific examples of the cationic acrylic resin include, for example, SEIAN 3754 (a cationic acrylic acid ester copolymer resin emulsion, manufactured by Daicel Chemical Industries, Ltd., supplied in the form of an aqueous emulsion; % By weight).

The above-mentioned cationic acrylic resin has low film-forming properties, and may not be able to form a uniform, highly durable print receiving layer 3 by itself. Therefore, as described above, an acrylic resin having film forming properties is used in combination. The acrylic resin having film-forming properties is excellent in film-forming properties and durability (more specifically, mechanical strength and stability of the print receiving layer 3, water resistance, scratch resistance, etc.) as its name implies, Since the compatibility with the cationic acrylic resin which is the same acrylic resin is also excellent, the print receiving layer 3 which is uniform and excellent in durability can be formed by the above combination.

Examples of the acrylic resin having film forming properties include polyacrylamide, polymethyl methacrylate, polybutyl methacrylate, polymethyl acrylate, polybutyl acrylate, and polystyrene-2-
Acrylonitrile, acrylonitrile-vinyl acetate copolymer, acrylonitrile-vinyl chloride copolymer, acrylonitrile-styrene copolymer, acrylonitrile-vinylidene chloride copolymer, acrylonitrile-vinylpyridine copolymer, acrylonitrile-methyl methacrylate copolymer, Acrylonitrile-butyl acrylate copolymer;

A thermosetting acrylic resin obtained by reacting a monomer or oligomer of an acrylate or a methacrylate with a thermosetting resin such as an epoxy resin or a phenol resin is also an acrylic resin having a film forming property. It can be suitably used as a resin. However, in the present invention, in order to secure the stability and flexibility of the print receiving layer 3, a self-crosslinking acrylic resin is most preferably used as the acrylic resin having the film forming property. The self-crosslinking acrylic resin is a resin having a self-crosslinking reactive group in the polymer or at the terminal thereof. Specific examples thereof include, for example, Nippon NSC Co., Ltd. supplied in the form of an aqueous emulsion. Iodosol A-4100 (a self-crosslinking type acrylic copolymer resin emulsion, solid content concentration 60% by weight)
And so on.

The ratio between the cationic acrylic resin C and the acrylic resin F having a film forming property is not limited to this, but the weight ratio is about C / F = about 7/3 to 2/8, especially C / F. = 5/5 to 3/7. This ratio is, when using both acrylic resins that are supplied in the form of an aqueous emulsion as described above,
It is the ratio between solids excluding water. The print receiving layer 3
In order to impart flexibility to the layer and improve the adhesive strength to the substrate, a plasticizer may be contained.

As the plasticizer, in order to form the uniform print receiving layer 4 while having the above-mentioned functions, it is necessary to form a phase with a binder resin such as the above-mentioned cationic acrylic resin or acrylic resin having a film forming property. Those having excellent solubility are preferably used. Suitable plasticizers satisfying the above properties include:
A dibasic acid such as, but not limited to, adipic acid, azelaic acid, sebacic acid, phthalic acid, and glycol,
Examples of the polyester plasticizer which is a polymer with a monohydric alcohol, such as adipic acid-propylene glycol polymer and adipic acid-1,3-butylene glycol polymer. Its weight average molecular weight is
About 800 to 10,000 is appropriate.

The amount of the plasticizer is about 5 to 80 parts by weight, preferably 5 to 20 parts by weight, based on 100 parts by weight of the total of the cationic acrylic resin and the acrylic resin having a film forming property.
It is preferably about 5 parts by weight, especially about 5 to 10 parts by weight. The print receiving layer 3 may further contain various additives in addition to the above components. As an additive, for example, in addition to a water-absorbing porous material for increasing the ink absorbency, a filler having no water absorption, or various surfactants, a colorant fixing agent (waterproofing agent), an antifoaming agent , An antioxidant, a fluorescent bleach, an ultraviolet absorber, a dispersant, a viscosity adjuster, and a pH adjuster.

Among them, examples of the water-absorbing porous material include inorganic fillers such as silica, alumina, aluminum silicate, magnesium silicate, basic magnesium carbonate, talc, clay, hydrosulfite, calcium carbonate, titanium oxide and zinc oxide. Agents. Examples of the filler having no water absorption include organic fillers such as polyethylene, polystyrene, and polyacrylate.

The print receiving layer 3 is coated with a coating material containing each of the above components by, for example, a blade coater, roll coater, air knife coater, bar coater, rod coater, gate roll coater, curtain coater, short dwell coater, gravure coater, flexo coater. It is formed by applying on a substrate by an application method using various application means such as a gravure coater and a size press and drying. As a solvent for forming the coating agent, an aqueous solvent is preferable in consideration of safety and influence on the environment. As the aqueous solvent, for example, in addition to water, a mixed solvent of water and a water-soluble organic solvent can be used. Particularly, water is used alone, or water is mixed with a lower alcohol such as methanol, ethanol, or butanol because of easy handling. It is preferred to use a solvent.

The amount of the aqueous solvent depends on the coating method used for applying the coating agent on the substrate, and more specifically, the viscosity of the coating agent and the drying conditions of the coating agent which are suitable for the method. It may be adjusted appropriately as needed. In order to form the print receiving layer 4 by drying the coating material applied on the base material, for example, forced drying may be performed using a hot air drier or a hot drum, or natural drying may be performed.

After drying, if necessary, a machine calender, a TG calender, a super calender, and the like may be used to increase the smoothness and surface strength of the print receiving layer 3.
Calendar processing using a soft calendar or super calendar processing may be performed. The thickness of the print receiving layer 3 is preferably about 2 to 80 μm, particularly preferably about 5 to 40 μm. If the thickness is less than this range, the fixability and the water resistance of the print may be insufficient. On the other hand, when the thickness exceeds this range, the base material 1 is easily curled and the handling thereof is not easy, and the adhesion of the print receiving layer 3 to the surface base material 2 is reduced, so that the false nail is formed. Peeling may occur when molding into a curved shape.

Next, the coloring layer 4 needs to have a function of passing ink at least in the thickness direction. Therefore, the coloring layer 4 has a low affinity for the ink and has a passage (gap) sufficient for the ink to pass therethrough. The coloring layer 4 usually contains a resin and a pigment for coloring the layer. In order to reduce the affinity of the coloring layer 4 with the ink, for example, when the ink to be used is water-based, a non-water-absorbing resin or pigment may be used.

In order to form a sufficient void in the coloring layer 4, for example, the layer may have an open cell structure, the amount of resin used for the pigment may be reduced, or, as described later, a needle-like crystal or the like may be used. For example, there is a method of using a pigment having a high shape anisotropy. As the resin, various resins such as a non-water-absorbing acrylic resin having a film forming property are suitably used, and these resins may be used in combination as needed. As the non-water-absorbing acrylic resin having a film-forming property, those having excellent durability, adhesion, and water resistance are preferable. For example, polyacrylamide, polymethyl methacrylate, polybutyl methacrylate, polymethyl acrylate, polybutyl acrylate , Polystyrene-2-acrylonitrile, acrylonitrile-vinyl acetate copolymer, acrylonitrile-vinyl chloride copolymer, acrylonitrile-styrene copolymer, acrylonitrile-vinylidene chloride copolymer, acrylonitrile-vinylpyridine copolymer, acrylonitrile-methacrylic acid Examples include a methyl copolymer and an acrylonitrile-butyl acrylate copolymer.

As another acrylic resin having film forming properties, a thermosetting resin obtained by reacting a monomer or oligomer of an acrylate or a methacrylate with a thermosetting resin such as an epoxy resin or a phenol resin. Acrylic resin and the like can also be suitably used. Examples of the pigment to be mixed with these resins include white pigments such as titanium oxide, alumina, calcium carbonate, silica, potassium titanate, and titanium oxide. Red, yellow,
Various blue-based pigments may be used.

As the pigment, a pigment having a shape with high shape anisotropy such as a needle crystal as described above is preferably used as compared with a normal granular pigment. Such a pigment having a high shape anisotropy has a layer having the same or higher film strength by using a smaller amount of resin than in the case of a normal granular pigment because the pigments are entangled because of the shape. There is an advantage that it can be formed. For example, in the case of an acicular crystal pigment, the pigment and the resin are mixed in a weight ratio of about 15: 1. Even when the amount of the resin is extremely small, the particulate pigment and the resin are mixed in a weight ratio of about 7: 3. A layer having substantially the same film strength as that blended in the above can be formed.

Therefore, by using a pigment having a high shape anisotropy such as a needle-like crystal and reducing the amount of the resin, a sufficient film strength can be obtained, and a sufficient space suitable for ink passage can be obtained. It is possible to form an ideal colored layer 4 having a gap. Examples of the white pigment having a shape with high shape anisotropy include, but are not limited to, needle-like crystals of potassium titanate which itself is non-water-absorbing [TISMO (trade name, manufactured by Otsuka Chemical Co., Ltd.) Crystal length about 15
μm, diameter about 0.4 μm] and the like are preferably used.

The mixing ratio of the resin and the pigment is not particularly limited. However, when a pigment having a high shape anisotropy such as the above-mentioned needle-like crystal is used, the pigment is added in a weight ratio of 5 to 20 with respect to the resin. The amount is preferably double, preferably 10 to 18 times. As described above, by reducing the amount of the resin, the colored layer 4 having an increased space inside and having an excellent ability to pass ink is formed as described above.
Here, when the compounding amount of the resin is less than the above range, the adhesive strength and the film strength of the pigment are inferior, and there is a possibility that delamination, detachment of the pigment and the like may occur. On the other hand, when the compounding amount of the resin is larger than the above range, it is not preferable because the space becomes small and the ability to pass the ink is reduced.

The thickness of the colored layer 4 is about 1 to 20 μm.
m, preferably about 3 to 7 μm. The print receiving layer 3 and the colored layer 4 may be provided with silica,
Inorganic fillers such as alumina, organic fillers such as polyethylene, polystyrene and polyacrylate, various surfactants, coloring agent fixing agents (waterproofing agents), defoamers, antioxidants,
Fluorescent bleach, UV absorber, dispersant, viscosity modifier, pH
Adjusters, other plasticizers and the like may be added. However, it is preferable to add such components to the ink receiving layer 3 within a range that does not reduce the transparency. In the colored layer 4, it is preferable to add one of the above components, which has an ink absorbing property, in a range that does not hinder the function of the layer in which the ink passes in the thickness direction.

To manufacture the base 1 for false nails of the present invention,
First, a coating liquid for the print receiving layer 3 is applied to the surface of the surface substrate 2 and dried. When the crosslinked polyvinyl alcohol or the like is used, for example, heat drying is performed, or the resin is crosslinked by heating after drying to form a three-dimensional network structure, thereby imparting water absorbency to the layer. . Next, the coating liquid of the coloring layer 4 is applied to the surface of the obtained print receiving layer 3 and dried. At this time, when the above-mentioned thermosetting acrylic resin or the like is used, it is also heated and dried, or heated after drying to heat-harden the resin.

Each coating solution is obtained by dissolving or dispersing the above components in a solvent. As the solvent, various solvents can be used and can be appropriately selected and used according to the components to be used. However, water or a mixture of water and another aqueous solvent is preferably used from the viewpoint of easy handling. As the aqueous solvent, for example, lower alcohols such as methanol, ethanol, and butanol can be used. Drying may be performed, for example, by forced drying using a hot drum in addition to a hot air drier, or by natural drying when the above-mentioned crosslinking, curing reaction, or the like is not involved.

Next, in order to form a printed image on the base material 1 for false nails of the present invention, various printing means such as thermal transfer, PPC, pen plotter and ink jet can be applied. For example, when printing is performed using an ink jet method, recording is performed by discharging ink from the orifice of the ink jet recording head onto the surface of the coloring layer 4. At this time, as shown in FIG. 3, the inks 5a and 5b discharged from the orifices pass through the coloring layer 4 and reach the print receiving layer 3. Although the ink 5a does not reach the interface with the surface substrate 2 and stays inside the print receiving layer 3, the print receiving layer 3
Since it is a transparent layer, the printed image formed by the ink 5a is clear and does not blur. That is, the image formed on the print receiving layer 3 can be clearly seen through the transparent layer of the surface substrate 2 with the colored layer 4 as a background, as shown in FIG.

In the present invention, since the print receiving layer 3 is transparent, the inks 5a and 5b to be injected from the orifices to form a print image may be in an appropriate amount or a small amount, and therefore, as in the case where a large amount of ink is injected. In addition, the problem that the ink bleeds in the surface direction of the surface substrate 2 and a delicate image cannot be obtained is eliminated. Also, even if a large amount of ink is injected,
The print receiving layer 3 can sufficiently absorb the ink and can form a delicate image without bleeding.

The ink usable in the present invention is usually
It is obtained by mixing a water-soluble coloring agent with water and / or an aqueous solvent as described above. On the print receiving layer 3, as shown in FIG.
Are printed and displayed. Note that the lower display 20 ′ is illustrated only for the sake of convenience, with the specific display omitted. In any of the printing methods described above, by using an anionic colorant as a colorant, the ionic bond between the anionic colorant and the cationic acrylic resin contained in the print receiving layer 3 can improve the fixing property. In addition, it is possible to perform printing display excellent in water resistance.

However, as described above, it is preferable to perform printing display by an ink-jet recording method which can easily perform full-color printing and is low-cost, using an aqueous ink containing an anionic colorant. The aqueous ink is generally manufactured by blending an anionic colorant in an aqueous solvent. As the aqueous solvent, in addition to water as in the case of the coating agent, a mixed solvent of water and a water-soluble organic solvent can be used.Especially, water alone or water and methanol, ethanol, butanol, etc. A mixed solvent with a lower alcohol is preferably used.

For example, nigrosine, C.I. I. Solvent Black 3, C.I. I. Solvent Black 5,
C. I. Solvent Black 7, C.I. I. Solvent Black 22, C.I. I. Dyes such as Solvent Black 23; Examples of the anionic colorant used in each color ink for full-color printing include C.I. I. Solvent Blue 11, C.I. I. Solvent Blue 12, C.I. I. Solvent Blue 25, C.I.
I. Solvent Blue 36, C.I. I. Solvent Blue 55, C.I. I. Cyan dyes such as Solvent Blue 73; I. Solvent Red 3, C.I. I. Solvent Red 8, C.I. I. Solvent Red 24, C.I. I. Solvent Red 25, C.I. I. Solvent Red 49,
C. I. Solvent Red 81, C.I. I. Solvent Red 82, C.I. I. Solvent Red 83, C.I. I. Solvent Red 84, C.I. I. Solvent Red 10
9, C.I. I. Magenta dyes such as Solvent Red 121; I. Solvent Yellow 2, C.I. I. Solvent Yellow 6, C.I. I. Solvent Yellow 14, C.I.
I. Solvent Yellow 15, C.I. I. Solvent Yellow 19, C.I. I. Solvent Yellow 21, C.I. I.
And yellow dyes such as Solvent Yellow 80.

The amount of the colorant added is 1 to the total amount of the ink.
About 30% by weight, especially about 3 to 12% by weight. As the ink jet recording method of performing printing using the above-described aqueous ink, from a nozzle, minute droplets of the aqueous ink are ejected intermittently according to print data, and printing is performed on the surface of the ink receiving layer, so-called In the on-demand method, a charge or a magnetic field is selectively applied to minute droplets of aqueous ink continuously discharged from nozzles according to print data, and only predetermined droplets are ejected to the surface of the ink receiving layer. There is a continuous type in which printing is performed by any of these methods, and any of these may be used in the present invention.

In the on-demand type ink jet recording system, (1) a predetermined amount of ink is supplied from the tip of the nozzle by heating the ink with a heater provided in the nozzle of the printer head to generate minute bubbles. So-called bubble jet (registered trademark) method, or (2)
A part of the nozzle is formed of a member that is deformed by a change in temperature, and the member is heated and deformed by a heater to discharge a predetermined amount of ink from the tip of the nozzle, a so-called thermal inkjet method, or (3) There is a so-called Mach jet method in which a fixed amount of ink is ejected from the tip of the nozzle by utilizing the deformation of the piezo element, but any of these methods may be employed in the present invention.

After printing, as shown in FIG.
For example, on the upper surface of the pressure-sensitive adhesive layer 6 which can be peeled off
By temporarily adhering the release paper 7 after laminating and coating the like, it is possible to eliminate in advance the trouble of applying some kind of bonding means after forming the individual nails. The thickness of the adhesive layer 6 is about 5 to 50 μm, particularly 15 to 30 μm.
It is preferably about μm. If the thickness is less than this range, sufficient adhesiveness to the nail may not be obtained. Conversely, if the thickness exceeds this range, an uncomfortable feeling to the nail may occur.

By molding the base material 1 for false nails of the present invention using the upper and lower dies 30 and 30 'as shown in FIG. 8, as shown in FIG. 2
Along the shape of 0 ', the curved shape of each false nail 21, 2
1 'is formed. The molding may be performed by heating and softening the substrate 1 or may be performed at normal temperature. At the same time as this molding or at any time before and after the molding, the artificial nail base 1 can be broken from the substrate 1 along the curved shapes 21 and 21 'of the individual artificial nails as shown in FIG. Such notches 22, 22 'for breaking may be formed. In this case, there is an advantage that the user can easily separate the individual false nails.

Alternatively, as shown in FIG. 11, a part of the base material 1 may be left as the connecting member 10 connecting the curved shapes 21, 21 'of the individual false nails, and the other part may be removed. Although not shown, the curved shapes 21, 2
1 'may be completely separated. In these cases, the user can immediately use the false nail. The method of manufacturing the false nail is performed using a manufacturing apparatus B as shown in FIG. 12, for example.

The operating unit on the front of the manufacturing apparatus B displays image data for displaying an artificial nail such as an arbitrary color, figure, photograph, character, etc. prepared in advance on the apparatus, and uses the artificial nail. person, the image selected from the image data and the pointing device B ₁ for inputting to the device, a display for confirming the display the selected B ₂
And are arranged. Although not shown, the adhesive layer 6 is formed on the colored layer 4 after printing as described above inside the manufacturing apparatus B.
Is formed on the base material 1 on which the print receiving layer 3 is formed, based on the above-described input result, based on the above-described printing process, and the forming process [simply curved shape]. In addition to the step of forming a cut for breaking as described above, the step of removing other parts while leaving the connecting material, or the step of separating individual false nails separately] Means for sequentially and automatically performing the steps, and a plurality of base materials 1 cut to a predetermined size, or a base material 1 obtained by winding a large number of base materials 1 into a roll, sequential means, after transport, the transport means for discharging the resulting artificial nail at the bottom of the outlet B ₃ of the manufacturing apparatus B is disposed.

According to such an apparatus, the user of the artificial nail selects an image of the artificial nail, such as a desired color, figure, photograph, character, or the like, and inputs the image using the pointing device B _1, and the selected image is displayed on the display B ₂ . By simply confirming and deciding, the completed false nail can be obtained automatically. The finished state of the artificial nail is determined depending on how much processing is performed in the above-described forming process, (a) a state simply formed into a curved shape, (b) a state where a cut for breaking is formed around the curved shape, (c) A state in which the other parts have been removed while leaving the connecting material. (d) A state in which the parts are individually cut apart, and in the cases (a) to (c) above, the user must After the nails are cut off, in the case of (d), the release paper 3 on the back surface may be peeled off, and the adhesive layer 2 may be attached on the nails of the user. At this time, since the base material 1 of the artificial nail is formed of a film or a sheet as described above, it is easy to cope with an individual nail shape by utilizing its flexibility.

The manufacturing apparatus B has a means for capturing the nail shape of each user as an image with a CCD camera or the like, matching the nail shape data prepared in advance, and changing the printing shape or the molding shape. It is also possible to incorporate. Although the manufacturing apparatus B of the above example automatically performs the steps up to the forming process, the manufacturing apparatus performs the steps up to the formation of the top coat layer 5, and the steps after the forming are separately prepared by the user. It may be set to a device (not shown) that has been set up and arbitrarily performed.

[0051]

Example 1 As a model of a substrate 1, a coating material having the following composition was applied to one surface of a polyethylene terephthalate film having a thickness of 200 μm using a bar coater, and then heated to 80 to 130 ° C.
To form a print receiving layer having a thickness of 8 to 30 μm. <Ingredient><Parts by weight> * Cationic acrylic resin 10 [Emulsion of Daicel Chemical Industries Co., Ltd. under the trade name of Sebian 3754, solid content concentration 30% by weight] * Self-crosslinking acrylic resin 10 [Iodosol A-4100 manufactured by NSC Japan, Ltd., an emulsion having a solid content of 60% by weight] * Synthetic silica 10 * Pure water 70 Then, a coating solution for a colored layer having the following composition is formed on the surface of the print receiving layer. Using a bar coater, the thickness after drying is 5
It was applied to a thickness of μm. This was air-dried to obtain a translucent colored layer.

(Composition) (parts by weight) White pigment 15 [TISMO, potassium titanate pigment manufactured by Otsuka Chemical Co., Ltd.] Self-crosslinking acrylic copolymer resin emulsion 2 [Iodozol A-4100 manufactured by Kanebo NSC, solid 60%] Defoamer 0.1 [Adecanate A-748 manufactured by Asahi Denka Co., Ltd.] Water 82.9 Next, a bubble jet type inkjet printer [manufactured by Canon Inc.] BJC420
J], the printing resolution was set to 360 dpi, and printing display using water-based ink was performed.

The aqueous ink used was prepared by dissolving an anionic dye (Special Black 7984, manufactured by Bayer AG) in ultrapure water so that the dye concentration became 3% by weight. As a result, the printed image was clear and the details were delicate.

[Brief description of the drawings]

FIG. 1 is a perspective view of a false nail base material of the present invention.

FIG. 2 is an enlarged sectional view of a permanent nail base.

FIG. 3 is a sectional view showing an embodiment when printing and displaying on a permanent nail base.

FIG. 4 is a plan view after an artificial nail is displayed.

FIG. 5 is a plan view in which an adhesive layer and a release layer are formed after an artificial nail is displayed.

FIG. 6 is a cross-sectional view showing a conventional ink receiver.

FIG. 7 is a plan view after displaying an artificial nail.

FIG. 8 is a sectional view of molding into a curved shape.

FIG. 9 is a sectional view after molding.

FIG. 10 is a plan view of an artificial nail.

FIG. 11 is a plan view of a modification.

FIG. 12 is a perspective view of a manufacturing apparatus.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 base material for false nail 2 surface base material 3 print receiving layer 4 coloring layer 5a ink 5b ink 6 adhesive layer 7 release paper 20, 20 'false nail 21, 21' curved shape 22, 22 'breaking cut 30, 30 'vertical type B manufacturing equipment

Claims (10)

[Claims] 1. A film or sheet sized to display a plurality of false nails such as colors, figures, characters, etc., on a back surface of a transparent surface substrate, a transparent print receiving layer, and ink in the thickness direction. A base material for false nails, characterized in that a colored layer that can pass through is laminated in this order. 2. The glass transition temperature of the surface substrate is 45 to 1
The base material for false nails according to claim 1, which is at 20C. 3. The base material for false nails according to claim 1, wherein said surface base material has a thickness of 100 to 700 μm. 4. The base material for false nails according to claim 1, wherein the print receiving layer is a layer of a water absorbent resin. 5. The coloring layer contains a coloring agent and a binder resin, and the weight ratio of the coloring agent to the binder resin is 5: 1.
The base material for false nails according to claim 1, wherein the ratio is up to 20: 1. 6. The artificial nail base according to claim 5, wherein the colorant is a white pigment. 7. The base for false nails according to claim 6, wherein the white pigment is needle-like crystals of potassium titanate. 8. The false nail base according to claim 1, wherein the print receiving layer is provided with false nail indications such as colors, figures, characters and the like, and individual false nail shapes are formed along the display shape. An artificial nail characterized by being formed as a curve. 9. The artificial nail according to claim 8, wherein the artificial nail is formed on a breakable notch base material that can be broken from the base material along the shape of each artificial nail. 10. The false nail according to claim 8, wherein an adhesive layer and release paper are provided on the coloring layer.