JP2022076964A - Method for manufacturing decorative body suited for outdoor use and decorative body suited for outdoor use - Google Patents

Abstract

To provide a decorative body suited for outdoor use and a method for manufacturing the decorative body, which allow a decorative part to have a function of sufficiently enduring outside use even when dye ink is used as ink-jet printing ink for forming the decorative part.SOLUTION: A method for manufacturing a decorative body 1 suited for outdoor use includes the steps of: forming a transparent resin reception layer 12 containing ultraviolet inhibitor on a metal or plastic member 10; making a color material 21 composed of dye ink for forming a prescribed decorative part 2 through ink-jet printing enter into an ink-jet recording medium sheet 20 having water absorbing and dispersing property, and stacking the ink-jet recording medium sheet 20 on the surface of the transparent resin reception layer 12; sublimating the color material 21 from the ink-jet recording medium sheet 20 through heating and pressure, and making the sublimated material enter into the transparent resin reception layer 12 to be fixed therein; and removing the ink-jet recording medium sheet 20 after color material transfer.SELECTED DRAWING: Figure 2

Description

The present invention relates to a method for producing a decorative body suitable for outdoor use and a decorative body suitable for outdoor use.

Examples of products for outdoor use include transport aircraft such as bicycles, motorcycles, and drones, and the surface of such products for outdoor use is decorated with pictures, letters, patterns, and the like. Conventionally, it is known that a decorative portion on the surface of a product is applied by inkjet printing (Patent Document 1).

Japanese Unexamined Patent Publication No. 2016-182705

Products used outdoors are often exposed to sunlight, rain, etc. Dye-based inks used as ink for inkjet printing have excellent color delicacy reproducibility, but are prone to discoloration and fading when exposed to sunlight, rain, etc., and are inferior in light resistance and water resistance. It was not suitable for decoration.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a function that allows the decorative portion to sufficiently withstand outdoor use even if a dye-based ink is used as the ink for inkjet printing for forming the decorative portion. It is an object of the present invention to provide a method for manufacturing a decorative body suitable for outdoor use and a decorative body suitable for outdoor use.

The method for manufacturing a decorative body suitable for outdoor use according to the present invention is
The process of forming a transparent resin receiving layer containing an ultraviolet ray inhibitor on a metal or plastic member, and
A color material made of a dye-based ink for applying a predetermined decorative portion by inkjet printing is allowed to enter the inside of an inkjet recording medium sheet having water absorption and dispersibility, and the inkjet recording medium sheet is placed on the surface of the transparent resin receiving layer. The process of superimposing and
The process of sublimating the coloring material from the inkjet recording medium sheet by heating and pressurizing, allowing it to enter the inside of the transparent resin receiving layer and fixing it.
It includes a step of removing the ink jet recording medium sheet after the color material transfer.
It is preferable to further include a step of forming a transparent hard coat layer having light resistance, water resistance and scratch resistance on the transparent resin receiving layer from which the ink jet recording medium sheet has been removed.

The decorative body suitable for outdoor use according to the present invention is
A transparent resin receiving layer containing an ultraviolet ray inhibitor formed on a metal or plastic member and a transparent hard coat layer formed on the transparent resin receiving layer and having light resistance, water resistance and scratch resistance are provided. Have and
Inside the transparent resin receiving layer, a predetermined decorative portion is formed in which a coloring material made of a dye-based ink for inkjet printing is inserted and fixed.

As described above, according to the present invention, the dye-based ink of the coloring material to be the decorative portion penetrates into the inside of the transparent resin receiving layer containing the ultraviolet inhibitor and is fixed, so that the decorative portion with the dye-based ink is used. , Discoloration and fading due to ultraviolet rays can be prevented, and light resistance can be improved. Further, by fixing the coloring material inside the transparent resin receiving layer, the water resistance to the decorative portion can be improved. Further, by forming a transparent hard coat layer on the transparent resin receiving layer, it is possible to improve the light resistance, water resistance and scratch resistance of the decorative portion. Therefore, even if a dye-based ink is used as the ink for inkjet printing as the coloring material, an outdoor-use decorative body having a function of sufficiently withstanding outdoor use can be obtained.

Further, by transferring and forming the decorative portion of the dye-based ink via an inkjet recording medium sheet having water absorption and dispersibility, it is possible to form a full-color decorative portion with excellent reproducibility, clearness and high resolution. .. A three-dimensional shape is obtained by printing on an inkjet recording medium sheet based on print data in which the three-dimensional shape of the member is made two-dimensional, and by transferring and forming a decorative portion on the three-dimensional shape member using this inkjet recording medium sheet. A good decorative portion can be easily formed on a member.

It is sectional drawing which shows the outdoor use decorative body of embodiment. It is sectional drawing which shows the manufacturing process of the decorative body for outdoor use of embodiment. It is a schematic diagram for demonstrating transfer | transfer of an inkjet recording medium sheet and a color material.

Hereinafter, embodiments of the present invention will be described.
The outdoor decorative body 1 shown in FIG. 1 is applied to a bicycle body frame, and has a rust preventive layer 11, a transparent resin receiving layer 12, and a transparent hard coat layer 13 on a metal member (aluminum) of the body frame. It was formed in this order. The present invention is not limited to the body frame of a bicycle, but can be applied to other members of a bicycle, and various product members for outdoor use such as a transport aircraft such as a motorcycle and a drone.

The transparent resin receiving layer 12 is formed with a predetermined decorative portion 2 in which a coloring material 21 made of a dye-based ink for inkjet printing is inserted and fixed. Urethane-based resin is used as the material of the transparent resin receiving layer 12, but the material is not limited to this, and for example, acrylic-based resin, polyester-based resin, and the like can be used.

The transparent resin receiving layer 12 contains an ultraviolet inhibitor. As a result, even if a dye-based ink is used for the coloring material 21 of the decorative portion 2, discoloration, fading, etc. due to ultraviolet rays can be prevented, and light resistance can be satisfactorily imparted.

The transparent hard coat layer 13 also contains an ultraviolet inhibitor to impart light resistance.
As a result, with respect to the coloring material 21 inside the transparent resin receiving layer 12, the transparent hard coat layer 13 covering the surface of the transparent resin receiving layer 12 and the transparent resin receiving layer 12 further improves the light resistance due to UV protection. Can be done. Therefore, even if a dye-based ink is used as the ink jet printing ink for the coloring material 21, discoloration, fading, etc. due to ultraviolet rays can be prevented, and an outdoor use decorative body having a function of sufficiently withstanding outdoor use can be obtained.

The ultraviolet inhibitor means an ultraviolet absorber or an ultraviolet scattering agent. The ultraviolet absorber absorbs ultraviolet rays and prevents the influence of ultraviolet rays on the coloring material 21 forming the decorative portion 2, for example, octyl methoxycinnamate, ethylhexyl methoxycinnamate, dimethyl PABA octyl, dimethyl PABA ethylhexyl. , T-Butylmethoxydibenzoylmethane and the like are exemplified. The ultraviolet scattering agent diffusely reflects ultraviolet rays to prevent the influence of ultraviolet rays on the coloring material 21 forming the decorative portion 2, and examples thereof include zinc oxide and titanium oxide. When powders such as zinc oxide and titanium oxide are used as an ultraviolet scattering agent, they tend to appear white, so it is better not to use them for the upper transparent resin protective layer 13 so that the decorative portion 2 does not appear turbid. Preferably, on the other hand, when the ultraviolet scattering agent is contained in the transparent resin receiving layer 12 on which the decorative portion 2 is fixed, the color of the decorative portion 2 can be emphasized by whitening.

The transparent hard coat layer 13 has water resistance and scratch resistance in addition to light resistance due to the inclusion of an ultraviolet absorber. The transparent hard coat layer 13 has a pencil hardness of H or more. As the material of the transparent hard coat layer 13, acrylic resin, urethane resin, melamine resin, epoxy resin, organic silicate compound, silicone resin and the like can be used. Above all, in terms of hardness, durability and the like, it is preferable to use a silicone-based resin or an acrylic-based resin. As the transparent hard coat layer 13, an ultraviolet curable resin or a thermosetting resin is used in terms of curability, flexibility and productivity, but it is preferable to use an ultraviolet curable resin because it is easy to form. preferable. Further, the transparent hard coat layer 13 can contain fine particles such as silica fine particles, metals, and metal oxides, whereby scratch resistance can be further improved. Further, the transparent hard coat layer 13 can contain an antioxidant, whereby the weather resistance can be improved.

Next, the manufacturing method will be described.
With reference to FIG. 2, first, the surface of the metal member 10 is anodized to form the rust preventive layer 11, and then a paint made of a transparent resin containing an ultraviolet ray inhibitor is applied onto the rust preventive layer 11. The transparent resin receiving layer 12 is formed (see FIG. 2A). In the case of a plastic member instead of the metal member 10, the rust preventive layer 11 does not have to be formed. The transparent resin paint can be applied by various coating methods such as a direct method such as brush coating and roller coating, a spraying method such as air spray coating and airless spray coating, and a coater method.

After the transparent resin receiving layer 12 is formed, the inkjet recording medium sheet 20 having the coloring material 21 embedded therein is superposed on the surface of the transparent resin receiving layer 12 (see FIG. 2B). The inkjet recording medium sheet 20 is formed by forming a predetermined decorative portion 2 on a base sheet by inkjet printing using a dye-based ink as an inkjet printing ink of a coloring material 21. The inkjet printing machine used for inkjet printing has a printer head that ejects inks of a plurality of colors (for example, magenta, cyan, yellow, black, etc.) and can perform full-color printing.

As the base sheet of the inkjet recording medium sheet 20, for example, a porous sheet containing porous alumina fine particles having linear pores formed in the base resin is used. This porous sheet has a water absorption and dispersibility, that is, a property of quickly absorbing the ink of the coloring material 21 and preventing the diffusion of ink jet dots. The color material 21 made of dye-based ink ejected from the printer head of an inkjet printer penetrates into the inside of the porous base sheet and is held. At this time, the dye component is retained inside while the solvent (moisture) in the ink is absorbed by the inkjet recording medium sheet 20 (see FIG. 3A). As a result, it is possible to suppress the expansion of the dot diameter of the inkjet in the inkjet recording medium sheet 20. Therefore, the full-color decorative portion 2 is formed on the inkjet recording medium sheet 20 with clear and high resolution.

Next, the laminated body in which the inkjet recording medium sheet 20 is superposed on the surface of the transparent resin receiving layer 12 is heated and pressed. For example, a hot press can be used for heating and pressurizing. By pressurization, the inkjet recording medium sheet 20 is brought into close contact with the ink jet recording medium sheet 20 in the shape of the base material. Therefore, the inkjet recording medium sheet 20 is in close contact with the 3D shape of the base material. By heating, the dye-based ink of the coloring material 21 held inside the inkjet recording medium sheet 20 sublimates and enters the inside of the transparent resin receiving layer 12 (see FIG. 2C). At this time, the color material 21 of the decorative portion 2 is held in the inkjet recording medium sheet 20 in a state where the expansion of the dot diameter is suppressed (see FIG. 3B). As a result, the dye-based ink of the coloring material 21 can enter the inside of the transparent resin receiving layer 12 in a state where the dot diameter when the ink is transferred to the transparent resin receiving layer 12 by sublimation is also suppressed. Therefore, the full-color decorative portion 2 is transferred and formed on the transparent resin receiving layer 12 with clear and high resolution. Then, after the heating and pressurization is completed, the inkjet recording medium sheet 20 after the color material transfer is peeled off and removed from the transparent resin receiving layer 12 of the base material.

Next, a paint for forming the transparent hard coat layer 13 is applied onto the transparent resin receiving layer 12 to form the transparent hard coat layer 13 (see FIG. 2D). As the paint for forming the transparent hard coat layer 13, for example, a resin material that is cured by irradiation with ultraviolet rays and the ultraviolet inhibitor and other functional agents contained therein are bonded to the organic skeleton, and a photoinitiator are used in an organic solvent or water. It is preferable to use a melted paint. As a method of applying the coating material for forming the transparent hard coat layer 13, various coating methods such as a direct method such as brush coating and roller coating, a spraying method such as air spray coating and airless spray coating, and a coater method are used. It can be carried out by the method. Then, the transparent hard coat layer 13 can be formed by applying the paint for forming the transparent hard coat layer 13 on the transparent resin receiving layer 12 and then irradiating with ultraviolet rays.
With the above, the outdoor use decorative body 1 in which the decorative portion 2 is provided with the coloring material 21 made of the dye-based ink for inkjet printing is completed.

As described above, according to the present embodiment, the dye-based ink of the coloring material 21 to be the decorative portion 2 enters the inside of the transparent resin receiving layer 12 containing the ultraviolet inhibitor and is fixed, so that the decoration with the dye-based ink is used. It is possible to prevent discoloration, fading, etc. due to ultraviolet rays with respect to the portion 2, and it is possible to improve the light resistance. Further, by fixing the coloring material 21 inside the transparent resin receiving layer 12, the water resistance to the decorative portion 2 can be improved. Further, by forming the transparent hard coat layer 13 on the transparent resin receiving layer 12, it is possible to improve the light resistance, water resistance and scratch resistance of the decorative portion 2. Therefore, even if a dye-based ink is used as the ink jet printing ink for the coloring material 21, an outdoor use decorative body 1 having a function of sufficiently withstanding outdoor use can be obtained.

Further, by transferring and forming the decorative portion 2 of the dye-based ink via the inkjet recording medium sheet 20 having water absorption and dispersibility, the full-color decorative portion 2 is formed with excellent reproducibility, clearness and high resolution. be able to.

Further, when printing on a member having a three-dimensional shape such as a curved surface with an inkjet printing machine, the control of moving the printer head along the three-dimensional shape is complicated, and there is a risk of dripping, etc. The three-dimensional shape of the member is printed on the medium sheet 20 based on the two-dimensional print data, and the decorative portion 2 is transferred and formed on the three-dimensional member by the inkjet recording medium sheet 20 to form the three-dimensional shape. It is possible to easily form a good decorative portion 2 with respect to the member of the above.

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the claims.

1 Decorative body for outdoor use 2 Decorative part 10 Metal member 11 Anti-corrosion layer 12 Transparent resin receiving layer 13 Transparent hard coat layer 20 Inkjet recording medium sheet 21 Color material (dye-based ink)

Claims (3)

The process of forming a transparent resin receiving layer containing an ultraviolet ray inhibitor on a metal or plastic member, and
A color material made of a dye-based ink for applying a predetermined decorative portion by inkjet printing is allowed to enter the inside of an inkjet recording medium sheet having water absorption and dispersibility, and the inkjet recording medium sheet is placed on the surface of the transparent resin receiving layer. The process of superimposing and
The process of sublimating the coloring material from the inkjet recording medium sheet by heating and pressurizing, allowing it to enter the inside of the transparent resin receiving layer and fixing it.
A method for manufacturing a decorative body suitable for outdoor use, which comprises a step of removing an inkjet recording medium sheet after transfer of a coloring material. The outdoor use according to claim 1, further comprising a step of forming a transparent hard coat layer having light resistance, water resistance and scratch resistance on the transparent resin receiving layer from which the ink jet recording medium sheet has been removed. How to make a decorative body. A transparent resin receiving layer containing an ultraviolet ray inhibitor formed on a metal or plastic member and a transparent hard coat layer formed on the transparent resin receiving layer and having light resistance, water resistance and scratch resistance are provided. Have and
A decorative body suitable for outdoor use, in which a predetermined decorative portion in which a coloring material made of a dye-based ink for inkjet printing is embedded and fixed is formed inside the transparent resin receiving layer.

Images