JP3351820B2 - Method for manufacturing uneven pattern formed body - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a concavo-convex pattern formed body, and more particularly, to a sharp and three-dimensional appearance without damaging the formed concavo-convex pattern, and to the design and durability. The present invention relates to a method for producing a concavo-convex pattern molded body having an excellent concavo-convex pattern.

[0002]

2. Description of the Related Art Conventionally, for example, in order to give a three-dimensional effect to a pattern provided on a smooth surface, it has been practiced to give the pattern itself a thickness. In addition to the necessity of a printing method, it is difficult to form sharp protrusions, and there is a problem that a beautiful three-dimensional pattern cannot be easily formed. In addition, naturally, the obtained three-dimensional pattern formed product lacks sharpness and three-dimensional feeling particularly in the three-dimensional pattern itself. In view of the above points, the present invention has proposed a method for manufacturing a concavo-convex pattern formed body for easily producing a concavo-convex pattern formed body that exhibits a sharp and beautiful three-dimensional effect (Japanese Patent Application Laid-Open No. 1-253449). . In this method, ionizing radiation is irradiated through an ionizing radiation-permeable release substrate provided with an ionizing radiation shielding pattern to cure a part of the ionizing radiation-curable resin, and then the release substrate is peeled off and is not cured. A part of the ionizing radiation-curable resin is adhered to the release base material and removed to form a concave portion. Then, a solvent is applied to this surface, and buffing is performed using a brush or a cotton buffing roller. This removes the uncured ionizing radiation-curable resin remaining in the concave portions.

[0003]

However, since the cured resin around the concave portion of the concave and convex pattern has low adhesion to the base material,
When trying to remove uncured ionizing radiation-curable resin by buffing with a brush or cotton buffing roller, the cured resin around the recess may be scraped off, and even the edge of the recess may be scraped. There is a problem that the design becomes worse. Also, a method of dissolving and removing uncured resin with a solvent alone has been proposed.However, a large amount of solvent is required to dissolve and remove the residual resin, which requires a long drying process and requires dedicated equipment. The problem also arises. Further, when handling a large amount of solvent, there is a danger of ignition or explosion, so that there is a problem that capital investment for preventing occurrence of disaster and sufficient care in handling are required.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and provides a concavo-convex pattern forming body capable of easily producing a concavo-convex pattern forming body exhibiting a sharp and beautiful three-dimensional effect without damaging the concavo-convex pattern. It is intended to provide a manufacturing method.

[0005]

The present invention is applied to a cosmetic material according to the present invention .
The method of manufacturing the uneven pattern formed body is characterized by sequentially performing the following steps. (A) A first step of preparing a release substrate having an ionizing radiation transmitting pattern provided on one of the front and back surfaces of an ionizing radiation-transmitting substrate having a releasable surface. (B) a second step of superposing the surfaces of the substrate for forming a concavo-convex pattern and the release substrate via an ionizing radiation-curable resin layer. (C) a third step of irradiating ionizing radiation from the release substrate side to cure the ionizing radiation-curable resin layer corresponding to a portion having no ionizing radiation shielding pattern. (D) a fourth step of removing the release base material and attaching a part of the uncured resin of the ionizing radiation-curable resin layer to the release base material and removing the resin to form a concave portion; (E) A sponge roller impregnated with a solvent that dissolves the uncured resin remaining partially or entirely on the uncured ionizing radiation-curable resin remaining on the uneven pattern surface of the uneven pattern forming substrate. Fifth step of dissolving and removing while scraping.

The method of the present invention can be characterized by performing the following steps in addition to these steps. After the fifth step, a step of further irradiating ionizing radiation to completely cure the uncured resin remaining on the uneven pattern surface of the uneven pattern forming substrate. Peeling provided with a colored ink pattern layer that at least partially transmits ionizing radiation on the surface in contact with the ionizing radiation-curable resin, along with the ionizing radiation shielding pattern provided on either the front or back surface of the ionizing radiation permeable substrate Forming a transferred convex portion of the colored ink picture layer using a base material; A step of forming an uneven pattern on the surface of the uneven pattern forming base material and then wiping the concave portions of the uneven pattern using a coloring ink;

[0007]

According to the present invention, in a portion having an ionizing radiation shielding pattern, the ionizing radiation curable resin on the substrate for forming a concavo-convex pattern is not cured but is removed by peeling of the release substrate, and the ionizing radiation shielding pattern is removed. In portions where no resin is present, the ionizing radiation-curable resin is cured and remains, so that an uneven pattern is formed. Further, the uncured ionizing radiation-curable resin remaining on the concavo-convex pattern without being completely removed by peeling of the peeling substrate is scraped off by a sponge roller. As a result, it is possible to easily obtain a concavo-convex pattern-formed body having an excellent three-dimensional effect on the concavo-convex pattern-forming substrate without damaging the sharp concavo-convex pattern.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings.

FIGS. 1 and 2 are explanatory views showing the steps of one embodiment of the manufacturing method of the present invention. FIGS. 1A to 1C are views showing the first to fourth steps of the present invention. FIG.
FIG. 2 is a sectional view of a main part showing a fifth step of the present invention. (A) First Step First, in the manufacturing method of the present invention, as shown in FIG. 1 (a), a shielding formed on the surface of an ionizing radiation transmitting substrate 5 having a peelable surface using an ionizing radiation shielding ink. The release substrate 4 provided with the characteristic pattern printing layer 6 is prepared.

The ionizing radiation permeable substrate 5 is made of a sheet or a film having ionizing radiation transmitting properties. When the ionizing radiation is ultraviolet rays, for example, polyester, polyamide (nylon or the like), polypropylene, or fluororesin is used. Examples thereof include a sheet or a film, and a sheet or film that does not contain a pigment or the like that has an effect on ultraviolet transmittance is preferable. Further, when the ionizing radiation is an electron beam, there is not much restriction because the electron beam has high transparency, and the above-mentioned sheet or film having the property of transmitting ultraviolet rays can be used in principle, and paper and the like can also be used. . At least the surface of the release substrate 4 on the side in contact with the ionizing radiation-curable resin layer 7 described later needs to be releasable, and if the material itself does not have releasability, a releasable resin or composition is applied. It is used as a surface peeling property. The thickness of the ionizing radiation permeable substrate 5 is not particularly limited, but is usually 5 to 200 μm, and particularly 25 to 100 μm.
m is preferred.

The shielding pattern printing layer 6 formed using the ionizing radiation shielding ink is provided with an ionizing radiation curable layer provided on the surface of the ionizing radiation transmitting substrate 5 when the layer is irradiated with ionizing radiation from the upper surface side thereof. The shielding pattern printing layer 6 is provided on the lower surface side of the ionizing radiation-transmitting substrate 5 as shown in FIG. The upper surface of the radiation-transmissive substrate 5 may be used.

As the ionizing radiation shielding ink for forming the shielding pattern printing layer 6, when the ionizing radiation is ultraviolet rays, a substance that reflects and shields the ultraviolet rays, for example, titanium oxide, potassium sulfate, calcium carbonate, etc. Ink containing a filler, or a pigment having a large hiding power with a particle size of about 0.3 to 10 μm, or a substance that absorbs ultraviolet rays, such as benzophenone, salicylate, benzotriazole,
Acrylonitrile UV absorbers, light absorbing pigments, carbon black or inorganic materials and quencher (for example, metal complex salts or hindered amines)
In addition, when the ionizing radiation is an electron beam, the above-mentioned inks and other pigment-based inks can be used. The shielding pattern printing layer 6 is formed using the above-described ionizing radiation shielding ink by a normal printing method.
A desired pattern or the like may be formed as a portion of the concave-convex pattern forming body 15 where the concave portion 9 of the concave-convex pattern 14 is formed.

(B) Second Step and Third Step Next, as shown in FIG. 1 (b), the above-described release group is applied to the uneven pattern forming base material 8 having an uncured ionizing radiation-curable resin layer 7 on the surface. The material 4 is overlapped and adhered to form a laminate (second step), and ionizing radiation is irradiated from the release substrate 4 side of the laminate to form an ionizing radiation-curable resin 7 on the surface of the substrate 8 for forming an uneven pattern. The part other than the part corresponding to the shielding pattern printing layer 6 of the release substrate 4 is cured (third step). The uncured ionizing radiation-curable resin layer 7 may be provided on the surface of the release substrate 4 in addition to being provided on the substrate 8 for forming a concavo-convex pattern. May be provided on both of them, and it is only necessary that the surfaces of the base material for forming a concavo-convex pattern and the release base material are superposed via the ionizing radiation-curable resin layer.

As the substrate 8 for forming a concavo-convex pattern, any material may be used. For example, a metal plate or molded product such as stainless steel, steel, aluminum or copper, glass, marble, ceramic, gypsum board, asbestos Cement boards, calcium silicate boards, inorganic boards or molded articles such as GRC (glass fiber reinforced cement), and organic polymer boards and molded articles such as polyester, melamine, polyvinyl chloride, diallyl phthalate, and sheets and films thereof. Woody board or molded product such as wood, plywood, particle board, thin paper, bleached kraft paper, titanium paper, linter paper, paperboard, gypsum board paper, etc .; polyethylene film, polypropylene film, polyvinyl chloride film, polyvinylidene chloride film , Polyvinyl alcohol film, polyethylene terephthalate Over Tofirumu, polycarbonate film, nylon film, polystyrene film, ethylene-vinyl acetate copolymer film,
Plastic films such as ethylene vinyl alcohol copolymer films and ionomers; metal foils or sheets of iron, aluminum, copper and the like; and composites of the above-mentioned materials. The base material 8 for forming a concavo-convex pattern may be subjected to a base treatment such as a filling treatment or a primer treatment, a treatment for improving adhesiveness, or the like.

Although not particularly shown, a colored pattern may be provided between the substrate 8 for forming the concavo-convex pattern and the ionizing radiation-curable resin layer 7. The pattern of the colored pattern may be provided in a pattern synchronized with the pattern of the ionizing radiation shielding pattern layer, but need not necessarily be formed so as to be synchronized.
The colored pattern is formed by a known printing method using an ordinary ink, paint, or the like, or the colored pattern itself is transferred to the uneven pattern forming base material 8 or a sheet provided with the colored pattern is laminated. Formed. When the base material 8 for forming a concavo-convex pattern is made of a transparent material, the colored pattern may be provided on the lower surface side of the base material 8 for concavo-convex pattern formation.

The ionizing radiation-curable resin layer 7 is for imparting a deep coating feeling to the concavo-convex pattern forming body and giving it a sense of quality. The material of the ionizing radiation-curable resin layer 7 is mainly composed of a polymer, an oligomer, a monomer, etc. having a radical polymerizable double bond in the structure, and a photopolymerization initiator, a sensitizer, and other non-reactive as required. A variety of grades containing a water-soluble polymer, organic solvent, wax and other additives are easily available from the market and can be used in the present invention. Further, a flame retardant is added to the ionizing radiation-curable resin layer 7,
A function such as flame retardancy and conductivity can be imparted by mixing a conductive material or the like. Further, the resin layer 7 is preferably a transparent or translucent layer. Ionizing radiation curable resin layer 7
Can be formed by a known method such as gravure coating, roll coating, flow coating or spray coating. The thickness of the resin layer 7 is 3 μm to 1 mm, particularly 30 to 2 mm.
00 μm is preferred. In particular, as the ionizing radiation-curable resin, the following two types of thermoplastic resins having a radical polymerizable unsaturated group are preferable.

(1) A polymer having a radically polymerizable unsaturated group in a polymer having a glass transition temperature of 0 to 250 ° C. More specifically, a compound obtained by polymerizing or copolymerizing the following compound is introduced with a radical polymerizable unsaturated group by methods (a) to (d) described below. Monomers having a hydroxyl group: N-methylol (meth) acrylamide, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 2
-Hydroxybutyl (meth) acrylate, 2-hydroxy-3phenoxypropyl (meth) acrylate and the like. Monomers having a carboxyl group: (meth) acrylic acid, (meth) acryloyloxyethyl monosuccinate and the like. Monomer having epoxy group: glycidyl (meth) acrylate and the like. Monomers having an aziridinyl group: 2-aziridinylethyl (meth) acrylate, allyl 2-aziridinylpropionate and the like. Monomer having an amino group: (meth) acrylamide,
Diacetone (meth) acrylamide, dimethylaminoethyl (meth) acrylate, diethylaminoethyl (meth) acrylate and the like. Monomer having a sulfone group: 2- (meth) acrylamido-2-methylpropanesulfonic acid and the like. Monomers having isocyanate groups: adducts of diisocyanates and radical polymerizable monomers having active hydrogen, such as 1 to 1 mole adducts of 2,4-toluene diisocyanate and 2-hydroxyethyl (meth) acrylate. Further, adjusting the glass transition point of the above copolymer,
In order to adjust the physical properties of the cured film, the above compound and the following monomers copolymerizable with the compound can be copolymerized. Such copolymerizable monomers include, for example, methyl (meth) acrylate,
Ethyl (meth) acrylate, propyl (meth) acrylate, butyl (meth) acrylate, isobutyl (meth) acrylate, t-butyl (meth) acrylate,
Examples include isoamyl (meth) acrylate, cyclohexyl (meth) acrylate, and 2-ethylhexyl (meth) acrylate. The method for introducing a radical polymerizable unsaturated group into the polymer obtained as described above includes the following steps: (a) In the case of a polymer or copolymer of a monomer having a hydroxyl group, (meth) acrylic acid or the like Is subjected to a condensation reaction. (B) In the case of a polymer or copolymer of a monomer having a carboxyl group or a sulfone group, the above-mentioned monomer having a hydroxyl group is subjected to a condensation reaction. (C) In the case of a polymer or copolymer of a monomer having an epoxy group, an isocyanate group or an aziridinyl group, the above-mentioned monomer having a hydroxyl group or monomer having a carboxyl group is added. (D) In the case of a polymer or copolymer of a monomer having a hydroxyl group or a carboxyl group, a monomer having an epoxy group or a monomer having an aziridinyl group or a diisocyanate compound and a monomer having a hydroxyl group-containing acrylate For example, there is a method in which an addition reaction of a 1: 1 mole of the adduct is performed.

(2) A compound having a melting point of room temperature (20 ° C.) to 250 ° C. and having a radically polymerizable unsaturated group. Specific examples include stearyl acrylate, stearyl (meth) acrylate, triacryl isocyanurate, cyclohexanediol di (meth) acrylate, cyclohexanediol di (meth) acrylate, spiroglycol diacrylate, spiroglycol (meth) acrylate, and the like. The compounds (1) and (2) can be used as a mixture, and a radically polymerizable unsaturated monomer can be added thereto. When the radical polymerizable unsaturated monomer is irradiated with ionizing radiation,
It improves crosslink density and improves heat resistance. In addition to the aforementioned monomers, ethylene glycol di (meth)
Acrylate, polyethylene glycol di (meth) acrylate, hexanediol di (meth) acrylate,
Trimethylolpropane tri (meth) acrylate, trimethylolpropane di (meth) acrylate, pentaerythritol tetra (meth) acrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol hexa (meth) acrylate, ethylene glycol diglycidyl ether di ( Meth) acrylates,
Polyethylene glycol diglycidyl ether di (meth) acrylate, propylene glycol diglycidyl ether di (meth) acrylate, polypropylene glycol diglycidyl ether di (meth) acrylate,
Sorbitol tetraglycidyl ether tetra (meta)
Acrylate or the like can be used, and it is preferable to use 0.1 to 100 parts by weight based on 100 parts by weight of the above-described ultraviolet curable resin or electron beam curable resin. The above can be sufficiently cured by an electron beam, but when cured by ultraviolet irradiation, benzoquinone, benzoin, benzoin ethers such as benzoin methyl ether, halogenated acetophenones, biacetyls and the like as sensitizers. One that generates radicals by ultraviolet irradiation is used. Representative examples of ionizing radiation used in the present invention are ultraviolet rays and electron beams, but other types can also be used. By the irradiation of the ionizing radiation, the ionizing radiation-curable resin layer 7 is cured in a portion where the shielding pattern printing layer 6 is not provided, and the ionizing radiation-curable resin layer 7 is uncured in a portion where the shielding pattern printing layer 6 is present. Becomes

(C) Fourth Step As shown in FIG. 1C, the release substrate 4 is peeled off, and the uncured portion 13 of the ionizing radiation-curable resin layer 7 corresponding to the shielding pattern printing layer 6 is removed. By removing it together with the release base material 4, an uneven pattern 14 is formed. When the release substrate 4 is peeled off after irradiation with ionizing radiation, the uncured ionizing radiation-curable resin 13 adheres to the release substrate 4 at the uncured portion of the ionizing radiation-curable resin layer 7, The adhered portion is removed together with the peeling, and as a result, a concave portion 9 in which a small amount of the uncured ionizing radiation-curable resin remains and a convex portion 10 made of the cured ionizing radiation-curable resin 12 are formed. Thereby, the concavo-convex pattern 14 is formed on the ionizing radiation-curable resin layer 7.

(C) Fifth Step As shown in FIG. 2, the surface of the embossed pattern 14 is buffed using a sponge roller 1 impregnated with a solvent. The uncured ionizing radiation-curable resin 11 remaining in the concave portions 9 of the concavo-convex pattern 14 obtained in the fourth step is appropriately removed by buff polishing using a sponge roller 1 impregnated with a solvent. . In the method of the present invention, the fifth
In the process, it is important to remove an appropriate amount of the uncured ionizing radiation-curable resin 11 remaining in the concave portions 9 of the uneven pattern 14 by buffing using the sponge roller 1 impregnated with a solvent. is there.

In order to remove an appropriate amount of the uncured resin 11 remaining in the concave portion 9, an appropriate solvent is appropriately selected by utilizing the high solubility of the remaining uncured resin in the solvent. The surface of the concavo-convex pattern forming body 15 is buff-polished using the sponge roller 1 while the solvent is immersed in the sponge roller 1, and the uncured resin residue 11 is dissolved and removed while scraping. At this time, the present invention is not limited to the case where all the uncured resin is removed, and a part thereof may be removed by a predetermined amount. In addition, at the time of the above buff polishing, the roller 1
It is preferable to lower the pressure for pressing the undulations on the uneven pattern forming body, that is, the coater pressure so that the uneven pattern 14 is not damaged. The coater pressure is preferably in the range of ^{5kg / cm 2 ~20kg / cm 2} .

The sponge body 2 constituting the roller 1 swells from a resin such as a polyolefin such as polyethylene or polypropylene, a polyamide such as nylon, a fluororesin such as polyvinylidene fluoride, or a silicon resin such as silicone rubber by a solvent to be used. A material which does not dissolve or deteriorate is appropriately selected to form a flexible porous body such as a cellular foam. The roller is cylindrical, and is usually used in a state where the sponge body 2 is covered around a core 3 of metal, silicon rubber or the like so as not to be deformed more than necessary during buffing. Is preferred.

Solvents for dissolving and removing the above include esters such as ethyl acetate and n-butyl acetate; ketones such as methyl ethyl ketone, methyl isobutyl ketone and cyclohexanone; ethanol, isopropanol,
There are alcohols such as n-butanol, etc., which are selected and used according to the type of ionizing radiation-curable resin used. Examples of a method of infiltrating the solvent into the sponge roller 1 include dropping the solvent over the entire width.

In the method of the present invention, if the uncured ionizing radiation-curable resin is not completely removed by buffing with the sponge roller 1 but remains on the concavo-convex pattern 14 after the completion of the fifth step, it is further irradiated with ionizing radiation. Preferably, the uncured resin is completely cured.

In the manufacturing method of the present invention, as shown in FIG. 3 (a), the ionizing radiation shielding pattern 6 provided on either the front or back of the ionizing radiation transmitting substrate 5 having a peelable surface, and the ionizing radiation. Transferable colored ink picture layer 1 made of a colored ink that at least partially transmits ionizing radiation on the surface of transparent substrate 5 on the side in contact with ionizing radiation-curable resin layer 7.
A release substrate 4 provided with 6 can also be used. In this case, the shielding pattern printing layer 6 may be provided so as to overlap the surface side of the colored ink picture layer 16.

The colored ink picture layer 16 is transferred and formed on the convex portions of the uneven pattern, and is formed using various paints or inks according to the application. Since the colored ink picture layer 16 needs to transmit the ionizing radiation to cure the ionizing radiation-curable resin layer 7, it is necessary that the colored ink picture layer 16 at least partially transmits the ionizing radiation. When the ionizing radiation is ultraviolet light, the colored ink picture layer 16 should avoid excessive use of pigments and fillers that impede ultraviolet light transmission in order to ensure ultraviolet light transmission. It is preferred to use pigments with a very small diameter. Further, the colored ink picture layer 16 may be formed as a uniform layer (so-called solid layer) or may be provided in a pattern, and may be a single-color print layer or a print layer of two or more colors. Good.

Release substrate 4 having colored ink picture layer 16
3B, as shown in FIG. 3B, the colored ink pattern layer 16 of the release substrate 4 is in contact with the ionizing radiation-curable resin layer 7 so that the ionizing radiation-curable resin layer 7
The release substrate 4 and the substrate 8 for forming an uneven pattern are overlapped with each other, and ionizing radiation is irradiated from the release substrate 4 side to release the ionizing radiation-curable resin 7 on the surface of the substrate 8 for forming an uneven pattern. The part other than the part corresponding to the shielding pattern printing layer 16 of the material 4 is cured.

Next, as shown in FIG. 3C, the release substrate 4 is peeled off, and the uncured portion 13 of the ionizing radiation-curable resin layer 7 corresponding to the shielding pattern printing layer 6 is removed. The colored ink pattern layer 16 of the release substrate 4 is transferred, and the cured portion 17 adhered to the ionizing radiation-curable resin 12 in which the colored ink pattern layer 16 has been cured while removing the concave portion 9 together with the base material 5. To form As a result, the uneven pattern 1
4 and a concavo-convex pattern forming body 15 having a printed pattern synchronized with the concavo-convex pattern 14 are formed. In addition, the colored ink picture layer 16
The portion corresponding to the shielding pattern printing layer 6 is removed together with the release substrate 4.

Further, in the method of the present invention, as shown in FIG. 4 (b), a wiping ink layer 18 can be provided in the concave portion 9 of the uneven pattern forming body 15 by wiping using a coloring ink. Wiping is a coating method in which a concave portion is filled with a coloring ink and the concave portion is colored. As a processing method, a coloring ink (or paint) is applied to the entire surface of the concave and convex pattern, and then a doctor blade is applied on the concave and convex pattern. It can be performed by wiping with an air knife or a roller or the like having a sponge, cloth, or the like as a surface material, and removing the ink on the convex portions. At this time, the ink on the projections does not have to be completely removed because the ink is polished later.

Before performing the wiping process, it is preferable to provide a transparent resin layer 19 on the surface of the projection 10 of the uneven pattern forming body 15 as shown in FIG. The transparent resin layer 19 is provided to protect the above-described printed pattern 16 from polishing described below, and further has a protective function such as preventing the surface from being damaged when the uneven pattern forming body 15 is used as a decorative material. The transparent resin layer 19 can be formed of a known thermoplastic resin, a thermosetting resin, an ionizing radiation-curable resin, or the like. The thermoplastic resin has good workability such as coating properties and polishing properties, and The thermosetting resin and the ionizing radiation curable resin are inferior in workability to thermoplasticity but have excellent physical properties after curing. Therefore, they may be appropriately selected according to the use of the decorative material. The thickness of the transparent resin layer is preferably formed in a range of 15 to 20 μm.

The coloring ink for forming the wiping ink layer 18 by the wiping may be selected from known inks, and the binder resin is made of acrylic, vinyl chloride-vinyl acetate copolymer or the like. It is preferable to use an aqueous emulsion, or a two-part curable polyurethane, polyester, epoxy, melamine or the like using a curing agent such as isocyanate or amine. The coloring pigment may be selected from known pigments such as red iron oxide, graphite, black ink, cyanine blue, and polyazo.

After the wiping is performed to form the wiping ink layer 18 as described above, the surface of the transparent resin layer is finally polished with a sander or the like to scrape off the excess colored ink 18a on the concave portion 10 to remove the transparent resin layer 18. As a result, an uneven pattern forming body 15 whose surface is polished and smoothed is obtained. As a means for polishing the transparent resin layer 19, a method such as a wet type, a dry type, sand paper polishing, and buff polishing is used.

Further, if necessary, after the transparent resin layer 19 is polished, a protective coat layer 20 can be applied from above the transparent resin layer 19 as shown in FIG. The protective coat layer 20 can be formed of the above-mentioned ionizing radiation curable resin, but may be formed of a thermosetting resin. The concavo-convex pattern formed body obtained by the method of the present invention has a high-grade paint feeling, and can be used as a decorative material in various applications such as doors, kitchen doors, surface materials such as furniture, and wall materials.

Hereinafter, the present invention will be described in more detail with reference to specific examples. Example 1 A substrate having a thickness of 38
Using a polyester film (polyethylene terephthalate, manufactured by Toray Industries, Inc.), the surface of this surface was printed with a white ink (UVH White, manufactured by Showa Ink: UVH White) that shields ultraviolet rays on a gravure plate having a plate depth of 60 μm.
A transferable wood-grain printing layer was provided by gravure printing using a colored pearl ink (UVTR, manufactured by Morohoshi Ink) having a UV-transmitting property so that the thickness after drying became 3 μm, thereby forming a release substrate.

Separately, a plywood having a thickness of 2.5 mm was prepared, and an enamel-based coating was applied to the surface of the plywood and subjected to a sealing treatment to obtain a substrate for forming an uneven pattern. Next, an ultraviolet-curable coating material was flow-coated on the surface of the substrate so as to have a thickness of 100 μm to form an uncured ultraviolet-curable resin layer. Then, the peeled substrate subjected to the grain printing is overlapped with the substrate for forming a concavo-convex pattern so that the grain-printed surface thereof is in contact with the UV-curable resin layer. Ultraviolet rays were irradiated from the release substrate side while passing through the irradiation device provided in the tower at a speed of 20 m / min to cure the ultraviolet curable resin layer, and then the polyester film of the transfer sheet was released.

When the release substrate was peeled off, almost all of the ultraviolet-curable resin layer was uncured in the portion corresponding to the conduit pattern printed with white ink, and a part of the layer adhered to the polyester film together with the release substrate and was removed. Is, the removed portion of the ultraviolet-curable resin layer is formed as a recess of the wood grain conduit, the ultraviolet-curable resin layer is cured and remains on the substrate,
The grain pattern was transferred to the surface.

Further, the surface of the uneven pattern is subjected to buff polishing using a sponge roll impregnated with isopropyl alcohol at a coater pressure of 8 kg / cm ² to remove the uncured ultraviolet curable resin layer remaining on the substrate. Then, after forming a transparent resin layer on the convex portion of the decorative material base using a two-component curable urethane resin-based transparent paint, a two-component curable urethane resin-based tea system is formed from above the transparent resin layer. Was wiped by a roll coater method using a colored wiping ink to fill the concave portions with the paint. After wiping, sanding was performed on the surface of the decorative material base material, and the wiping ink remaining on the concave surface of the transparent resin layer was scraped off (the entire transparent resin layer was cut off, but it did not reach the grain print pattern). Thereafter, for the purpose of gloss control, a protective coating layer was provided to a thickness of about 5 μm by spray coating using a gloss control clear paint (urethane-based) over the entire surface of the decorative material to obtain a decorative material. The obtained decorative material had a high surface hardness and a high-grade paint feeling, and also had an excellent design without shaving of the printed pattern.

[0036]

As described above, according to the method for producing a concavo-convex pattern-formed body of the present invention, a part of the uncured ionizing radiation-curable resin corresponding to the position of the ionizing radiation shielding pattern on the peeling substrate is removed. At the time of peeling to remove and adhere to the substrate to form a recess, the uncured ionizing radiation-curable resin remaining in the recess, buffing using a sponge roller impregnated with a solvent, Since it is removed while scraping with a roller,
Compared with the dissolving and removing method using only a solvent, the amount of the solvent used can be reduced, so that the drying time can be shortened and no special drying equipment is required. Furthermore, danger is reduced because the amount of the solvent used is small. Also,
Since the sponge roller is made of a flexible material, the periphery of the concave portion and the edge of the concave portion, which is the boundary portion between the cured resin and the uncured resin having weak adhesion to the uneven pattern forming base material, are not scraped off, Uncured resin can be removed without damaging the uneven pattern. Therefore, the depth of the recess,
Since a concavo-convex pattern with a more excellent three-dimensional effect is obtained, in which the sharpness of the edge of the concave portion is more excellent, the above-mentioned concavo-convex pattern-formed body having excellent design properties can be reliably produced.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing one step of production in one embodiment of a method for producing a concavo-convex pattern forming body of the present invention, and shows a longitudinal section of a main part of the concavo-convex pattern forming body.

FIG. 2 is a longitudinal sectional view of an essential part showing a step of scraping and removing uncured resin remaining in concave portions of the uneven pattern by a sponge roller impregnated with a solvent.

FIG. 3 is an explanatory view showing one step of production in one embodiment of the method for producing a concavo-convex pattern forming body of the present invention, and shows a longitudinal section of a main part of the concavo-convex pattern forming body.

FIG. 4 is an explanatory view showing one step of the production in one embodiment of the method for producing a concavo-convex pattern forming body of the present invention, and shows a longitudinal section of a main part of the concavo-convex pattern forming body.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 sponge roller 4 release substrate 5 ionizing radiation transmitting substrate 6 shielding pattern printing layer 7 ionizing radiation curable resin layer 8 substrate for forming concavo-convex pattern 9 concave portion 10 convex portion 11 remaining uncured ionizing radiation curable Resin 13 Uncured ionizing radiation-curable resin removed 14 Uneven pattern 15 Uneven pattern forming body 16 Colored ink picture layer

Continuation of front page (56) References JP-A-4-163127 (JP, A) JP-A-4-163126 (JP, A) JP-A-51-61770 (JP, A) JP-A-63-130168 (JP, A) , A) JP-A-52-87470 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B05D 5/06 104 B29C 59/00

Claims (4)

(57) [Claims] 1. A makeup characterized by sequentially performing the following steps:
A method for producing a concavo-convex pattern forming body used for a material . (A) A first step of preparing a release substrate having an ionizing radiation transmitting pattern provided on one of the front and back surfaces of an ionizing radiation-transmitting substrate having a releasable surface. (B) a second step of superposing the surfaces of the substrate for forming a concavo-convex pattern and the release substrate via an ionizing radiation-curable resin layer. (C) a third step of irradiating ionizing radiation from the release substrate side to cure the ionizing radiation-curable resin layer corresponding to a portion having no ionizing radiation shielding pattern. (D) a fourth step of removing the release base material and attaching a part of the uncured resin of the ionizing radiation-curable resin layer to the release base material and removing the resin to form a concave portion; (E) A sponge roller impregnated with a solvent that dissolves the uncured resin remaining partially or entirely on the uncured ionizing radiation-curable resin remaining on the uneven pattern surface of the uneven pattern forming substrate. Fifth step of dissolving and removing while scraping. 2. An uncured ionizing radiation-curable resin remaining on the surface of a substrate for forming a concavo-convex pattern is scraped off by a sponge roller impregnated with a solvent, and is further irradiated with ionizing radiation to obtain a concavo-convex pattern. manufacturing method of the unevenness pattern formed body used for the decorative material according to claim 1, wherein the complete curing of the uncured resin remaining on the uneven pattern surface of the substrate for forming. 3. A colored ink pattern that transmits at least a portion of ionizing radiation to the surface in contact with the ionizing radiation-curable resin, together with the ionizing radiation-shielding pattern provided on one of the front and back surfaces of the ionizing radiation-transmitting substrate. Using a release substrate provided with a layer,
The method for producing a concave-convex pattern-forming body for use in a decorative material according to claim 1 or 2, wherein the convex part to which the colored ink picture layer is transferred is formed. 4. The makeup according to any one of claims 1 to 3, wherein wiping is performed on the concave portions of the concave and convex pattern formed on the surface of the substrate for forming a concave and convex pattern using a coloring ink. A method for producing a concavo-convex pattern forming body used for a material .