JP2017087484A - Decoration method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a decoration method which enables a relatively easy setting of the exposure dose of ultraviolet rays in an ultraviolet irradiation step of irradiating an ultraviolet curable ink that coats a decorative body in the decoration method of decorating a decoration object by using an ultraviolet curable ink containing an ultraviolet curable cation polymerizable resin to bond a decorative body to the decoration object.SOLUTION: This decoration method comprises an ink coating step of coating a decorative body 2 with an ultraviolet curable ink 5 containing an ultraviolet curable cation polymerizable resin, a photoinitiator and an organic solvent, an ultraviolet irradiation step of irradiating the ultraviolet curable ink 5 that coats the decorative body 2 in the ink coating step, a solvent removal step of removing the organic solvent of the ultraviolet curable ink 5 that coats the decorative body 2 in the ink coating step by evaporation, and a decorative body pasting step of making the pasting the decorative body 2 to a decoration object 1 by bringing the surface of the ultraviolet curable ink 5 in close contact with the decoration object 1 after the ultraviolet irradiation step and the solvent removal step.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a decoration method for decorating an object to be decorated by attaching an object to the object to be decorated.

  Conventionally, the manufacturing method of the base material product decorated with foil is known (for example, refer patent document 1). In the manufacturing method described in Patent Document 1, a foil is bonded to a substrate such as paper or a plastic sheet using an ultraviolet curable cationic resin adhesive. The ultraviolet curable cationic resin adhesive has a long time until it is completely cured after being irradiated with ultraviolet rays. Therefore, in this manufacturing method, first, an ultraviolet curable cationic resin adhesive is printed on a base material, and ultraviolet rays are irradiated to the adhesive layer (adhesive layer). When the ultraviolet ray is irradiated, the viscosity of the adhesive layer increases. Therefore, when the foil is stacked on the adhesive layer, the foil sticks to the base material due to the adhesive force of the adhesive layer. Thereafter, the adhesive force of the adhesive layer increases with the passage of time. Therefore, when the adhesive layer is completely cured, the foil is adhered to the substrate by the adhesive layer.

JP 2013-2116013 A

  In the case of the manufacturing method described in Patent Document 1, in the step of irradiating the adhesive layer with ultraviolet rays (ultraviolet irradiation step), it is necessary to irradiate the adhesive layer with an amount of ultraviolet rays necessary to completely cure the adhesive layer after a predetermined time has elapsed. There is. Further, in the case of this manufacturing method, in the ultraviolet irradiation step, the adhesive strength just enough to attach the foil to the substrate remains in the adhesive layer immediately after the ultraviolet irradiation (that is, the bonding immediately after the ultraviolet irradiation) It is necessary to set the amount of UV irradiation so that the layer does not cure to the extent that the foil cannot be applied to the substrate. Furthermore, in this manufacturing method, for example, when an ultraviolet curable cationic resin adhesive is printed on a substrate using an inkjet printer, the adhesive layer printed on the substrate does not bleed in the ultraviolet irradiation step. It is necessary to set the irradiation amount of ultraviolet rays so as to increase the viscosity of the adhesive layer. Therefore, in the manufacturing method described in Patent Document 1, the setting of the irradiation amount of ultraviolet rays in the ultraviolet irradiation step becomes complicated.

  Accordingly, an object of the present invention is to provide a decoration method for decorating a decoration body by adhering a decoration object to the decoration body using an ultraviolet curable ink containing an ultraviolet curable cationic polymerizable resin. Another object of the present invention is to provide a decoration method capable of setting the irradiation amount of ultraviolet rays in the ultraviolet irradiation step of irradiating ultraviolet rays to the ultraviolet curable ink applied to the decoration relatively easily.

  In order to solve the above-described problems, the decoration method of the present invention includes an ink application step of applying an ultraviolet curable ink containing an ultraviolet curable cationic polymerizable resin, a photopolymerization initiator, and an organic solvent to a decoration. , UV irradiation process to irradiate UV curable ink applied to decorations in the ink application process, and solvent removal to evaporate and remove the organic solvent of UV curable ink applied to decorations in the ink application process And a decorative object sticking step of attaching a decorative object to the object to be decorated by bringing the surface of the ultraviolet curable ink into close contact with the object to be decorated after the step and the ultraviolet irradiation process and the solvent removing process.

  In order to solve the above problems, the decoration method of the present invention includes an ink for applying an ultraviolet curable ink containing an ultraviolet curable cationic polymerizable resin, a photopolymerization initiator, and an organic solvent to an object to be decorated. The application process, the ultraviolet irradiation process for irradiating the ultraviolet curable ink applied to the object to be decorated in the ink application process, and the organic solvent of the ultraviolet curable ink applied to the object to be decorated in the ink application process are evaporated. And a solvent removing step for removing the adhesive, and an ornament pasting step for adhering the ornament to the object to be decorated by bringing the ornament into close contact with the surface of the ultraviolet curable ink after the ultraviolet irradiation step and the solvent removing step. And

  In the decoration method of the present invention, the organic solvent is contained in the ultraviolet curable ink applied to the object to be decorated or the decoration in the ink application process. Therefore, in the present invention, the organic solvent is evaporated and removed in the solvent removal step, thereby increasing the viscosity of the ultraviolet curable ink applied to the object to be decorated and the decorative object, and applied to the object and decorative object. It is possible to prevent bleeding of the ultraviolet curable ink. Therefore, in the present invention, in the ultraviolet irradiation process, the ultraviolet curable ink is applied to the object to be decorated so that the ultraviolet ray is irradiated in an amount necessary for complete curing after the decorative object applying process. It is only necessary to set the irradiation amount of ultraviolet rays so that the adhesive strength as much as possible remains in the ultraviolet curable ink immediately after being irradiated with ultraviolet rays, preventing bleeding of the ultraviolet curable ink applied to the object to be decorated and decorations. It is not necessary to set the irradiation amount of ultraviolet rays as is done. As a result, in the present invention, it is possible to set the irradiation amount of ultraviolet rays in the ultraviolet irradiation step relatively easily.

  In the present invention, the viscosity at 25 ° C. of the ultraviolet curable ink is 3 mPa · sec to 18 mPa · sec, and the viscosity at 25 ° C. of the ultraviolet curable ink when the organic solvent is removed is 20 mPa · sec or more. It is preferable. If comprised in this way, since the viscosity at 25 degrees C of an ultraviolet curable ink is 18 mPa * sec or less, in an ink application process, an ultraviolet curable ink is discharged from an inkjet head, and an ultraviolet curable type is applied to a to-be-decorated body or a decoration. Ink can be applied. Moreover, since the viscosity at 25 ° C. of the ultraviolet curable ink when the organic solvent is removed is 20 mPa · sec or more when the organic solvent is removed in this way, the organic solvent is evaporated and removed in the solvent removing step. It is possible to surely prevent bleeding of the ultraviolet curable ink applied to the decoration.

  In the present invention, the decorative object is, for example, a foil. In the present invention, since the organic solvent is contained in the ultraviolet curable ink applied to the object to be decorated or the decoration in the ink application process, the thickness of the ultraviolet curable ink applied in the ink application process is reduced. Is possible. Therefore, when the decorative object is a foil and the unnecessary part of the foil is removed after the decorative object pasting process, the end surface of the foil formed by removing the unnecessary part is made a sharp end surface. Is possible.

  In the present invention, the ultraviolet irradiation step is preferably performed after the solvent removal step. If comprised in this way, compared with the case where a solvent removal process is performed after an ultraviolet irradiation process, it becomes possible to prevent effectively the bleeding of the ultraviolet curable ink applied to the to-be-decorated object or the decoration. At the same time, the organic solvent contained in the ultraviolet curable ink can be reliably evaporated and removed.

  In the present invention, the ultraviolet irradiation step and the solvent removal step may be performed simultaneously. When UV curable ink is irradiated with UV rays, the polymerization reaction begins and heat of polymerization reaction is generated. In this case, the heat of polymerization reaction is used to evaporate the organic solvent contained in the UV curable ink. It becomes possible to do. Therefore, in the solvent removal step, the organic solvent can be removed by evaporation in a short time.

  As described above, according to the present invention, in the decoration method for decorating the object to be decorated by adhering the decoration to the object to be decorated using the ultraviolet curable ink containing the ultraviolet curable cationic polymerizable resin, It becomes possible to set the irradiation amount of ultraviolet rays in the ultraviolet irradiation step of irradiating ultraviolet rays to the ultraviolet curable ink applied to the body or decoration relatively easily.

It is a schematic diagram for demonstrating the decoration method concerning embodiment of this invention. It is a schematic diagram for demonstrating the decoration method concerning other embodiment of this invention. It is a schematic diagram for demonstrating the decoration method concerning other embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Decoration method)
FIG. 1 is a schematic diagram for explaining a decoration method according to an embodiment of the present invention.

  The decoration method of the present embodiment is a method for decorating the body to be decorated 1 by pasting the decoration 2 on the body 1 to be decorated. The decorated body 1 is made of, for example, plastic, glass, metal, paper, or the like. The ornament 2 is made of a material that does not transmit ultraviolet rays. The ornament 2 in this embodiment is a foil. Specifically, the decorative object 2 is a metal foil such as a gold foil or an aluminum foil. Therefore, hereinafter, the decorative object 2 of the present embodiment is referred to as “foil 2”. In this embodiment, the foil 2 before being attached to the object to be decorated 1 is deposited on the base material (base film) 4 via the release layer 3 as shown in FIG. The foil 2 may be a hologram foil.

  In this embodiment, the foil 2 is attached to the object to be decorated 1 using an ultraviolet curable ink (solvent UV ink) 5 containing an ultraviolet curable cationic polymerizable resin, a photopolymerization initiator, and an organic solvent. Attached. As described in Patent Document 1 described above, the ultraviolet curable cationic polymerizable resin has a long time until it is completely cured after being irradiated with ultraviolet rays, and it is a time until it is completely cured after being irradiated with ultraviolet rays. It has a characteristic that it can be controlled. The ultraviolet curable ink 5 of this embodiment is a transparent clear ink. The ultraviolet curable ink 5 may contain white, black, or other color materials. That is, the ultraviolet curable ink 5 may be a color ink.

  The viscosity of the ultraviolet curable ink 5 at 25 ° C. (that is, the viscosity of the ultraviolet curable ink 5 at room temperature) is 3 mPa · sec to 18 mPa · sec. Further, the viscosity at 25 ° C. of the ultraviolet curable ink 5 when the organic solvent is removed (that is, the viscosity at room temperature of the ultraviolet curable ink 5 when the organic solvent is removed) is 20 mPa · sec or more. That is, the viscosity of the ultraviolet curable ink 5 is set so that the ultraviolet curable ink 5 does not bleed when the organic solvent is removed.

  When affixing the foil 2 to the object to be decorated 1, first, as shown in FIG. 1B, the ultraviolet curable ink 5 is applied to the foil 2 (ink application process). In the ink application process of this embodiment, ultraviolet curable ink 5 is ejected from the inkjet head 11 of the inkjet printer toward the foil 2 deposited on the base material 4 via the release layer 3, and the foil 2 is cured by ultraviolet radiation. The mold ink 5 is applied. The inkjet head 11 is disposed above the foil 2. The inkjet head 11 is mounted on a carriage (not shown) of the inkjet printer and moves above the foil 2.

  In addition, the ultraviolet curable ink 5 applied to the foil 2 in the ink application process is irradiated with ultraviolet rays (ultraviolet irradiation process), and the organic solvent of the ultraviolet curable ink 5 applied to the foil 2 in the ink application process is evaporated. To remove (solvent removal step). That is, in this embodiment, the ultraviolet irradiation process and the solvent removal process are performed simultaneously. In the ultraviolet irradiation process, the UV irradiator 12 irradiates the ultraviolet curable ink 5 with ultraviolet rays. In the solvent removal step, the ultraviolet curable ink 5 is heated by the heater 13 to evaporate and remove the organic solvent of the ultraviolet curable ink 5.

  In the solvent removal step, the organic solvent of the ultraviolet curable ink 5 may not be completely removed. In this case, the organic solvent of the ultraviolet curable ink 5 is completely removed by heating the object to be decorated 1 in the leaving step described later. Further, by controlling the temperature of the heater 13 in the solvent removal step, it is possible to shorten or lengthen the time until the ultraviolet curable ink 5 is completely cured.

  The UV irradiator 12 is, for example, an ultraviolet LED, and irradiates ultraviolet rays having a wavelength of 250 nm to 400 nm. The UV irradiator 12 is mounted on, for example, a carriage of an ink jet printer and moves on the foil 2 together with the ink jet head 11. The UV irradiator 12 is immediately after being applied to the foil 2. The ultraviolet curable ink 5 is irradiated with ultraviolet rays. For example, the heater 13 is disposed below the base material 4, and the base material 4 is placed on the heater 13. The heater 13 heats the ultraviolet curable ink 5 through the base material 4, the release layer 3 and the foil 2 immediately after the ultraviolet curable ink 5 is applied to the foil 2, thereby removing the organic solvent of the ultraviolet curable ink 5. Remove by evaporation.

  The UV irradiator 12 may irradiate the ultraviolet curable ink 5 with ultraviolet rays after a predetermined time has elapsed since the ultraviolet curable ink 5 was applied to the foil 2. Further, the heater 13 may heat the ultraviolet curable ink 5 after a predetermined time has elapsed since the ultraviolet curable ink 5 was applied to the foil 2. In this case, the ultraviolet irradiation by the UV irradiator 12 and the heating of the ultraviolet curable ink 5 by the heater 13 may be performed simultaneously, or the ultraviolet irradiation by the heater 13 may be performed after the ultraviolet irradiation by the UV irradiator 12. The curable ink 5 may be heated, or the UV irradiator 12 may be irradiated with ultraviolet rays after the ultraviolet ray curable ink 5 is heated by the heater 13. That is, the ultraviolet irradiation process and the solvent removal process may be performed simultaneously, the solvent removal process may be performed after the ultraviolet irradiation process, or the ultraviolet irradiation process may be performed after the solvent removal process.

  However, as described above, the viscosity of the ultraviolet curable ink 5 at room temperature when the organic solvent is removed is 20 mPa · sec or more, and the viscosity of the ultraviolet curable ink 5 is the ultraviolet light applied to the foil 2. If the organic solvent of the curable ink 5 is removed, the ultraviolet curable ink 5 applied to the foil 2 is set not to bleed. Therefore, it is preferable that the heater 13 heats the ultraviolet curable ink 5 immediately after the ultraviolet curable ink 5 is applied to the foil 2 to evaporate and remove the organic solvent of the ultraviolet curable ink 5.

  When the ultraviolet irradiation step and the solvent removal step are finished, as shown in FIG. 1C, the surface of the ultraviolet curable ink 5 is brought into close contact with the decorated body 1 and the foil 2 is attached to the decorated body 1 (decorative object) Pasting step). The decorative object sticking step is performed while the ultraviolet curable ink 5 remains adhesive enough to stick the foil 2 to the object to be decorated 1 after the ultraviolet irradiation step and the solvent removal step. In other words, the decorative object pasting step is performed after the ultraviolet irradiation step and the solvent removing step are completed and before the ultraviolet curable ink 5 is cured until the foil 2 does not stick to the object to be decorated 1. The time from the completion of the ultraviolet irradiation process and the solvent removal process to the start of the decorative object pasting process varies depending on the components contained in the ultraviolet curable ink 5, the ultraviolet irradiation amount in the ultraviolet irradiation process, etc. This time is, for example, 30 seconds or 3 minutes. In the decorative object pasting step, for example, as shown in FIG. 1C, the surface of the ultraviolet curable ink 5 is decorated by pressurizing the base material 4 toward the object to be decorated 1 with a rubber squeegee 14 or the like. Close contact with the body 1.

  Thereafter, as shown in FIG. 1D, the base material 4 is removed and the foil 2 is transferred to the object to be decorated 1 (transfer process), and the object to be decorated 1 is left until the ultraviolet curable ink 5 is completely cured. (Standing process). In the leaving step, the object to be decorated 1 may be heated. The adhesive force of the ultraviolet curable ink 5 increases with time (that is, increases as the curing of the ultraviolet curable ink 5 progresses). 2 is bonded and fixed to the body 1 to be decorated. When the ultraviolet curable ink 5 is completely cured and the foil 2 is bonded and fixed to the decorated body 1, the portion of the foil 2 that is not bonded to the decorated body 1 is removed (unbonded portion removing step). When the removal of the unbonded portion of the foil 2 is finished, the decoration of the body 1 to be decorated is finished.

(Main effects of this form)
As described above, in this embodiment, the ultraviolet curable ink 5 contains an organic solvent. Therefore, in this embodiment, the organic solvent is evaporated and removed in the solvent removing step to increase the viscosity of the ultraviolet curable ink 5 applied to the foil 2, thereby increasing the viscosity of the ultraviolet curable ink 5 applied to the foil 2. It becomes possible to prevent bleeding. Therefore, in the present embodiment, in the ultraviolet irradiation process, the foil 2 is applied to the object to be decorated 1 so that the ultraviolet curable ink 5 is irradiated with an amount of ultraviolet light necessary for complete curing after the decorative object pasting process. It is only necessary to set the irradiation amount of the ultraviolet rays so that the adhesive strength that can be applied remains on the ultraviolet curable ink 5 after being irradiated with ultraviolet rays, and bleeding of the ultraviolet curable ink 5 applied to the foil 2 is prevented. It is not necessary to set the irradiation amount of ultraviolet rays as is done. As a result, in this embodiment, it becomes possible to set the irradiation amount of ultraviolet rays in the ultraviolet irradiation step relatively easily.

  In addition, for example, when the ultraviolet curable ink 5 does not contain an organic solvent, the lower limit value of the irradiation amount of ultraviolet rays that can prevent the ultraviolet curable ink 5 applied to the foil 2 from bleeding, When the ultraviolet curable ink 5 is higher than the lower limit of the ultraviolet irradiation amount necessary for complete curing after the decorative object pasting step, the allowable range of the ultraviolet irradiation amount in the ultraviolet irradiation step is the ultraviolet ray of this embodiment. There is a possibility that it becomes narrower than the allowable range of the irradiation amount of ultraviolet rays in the irradiation process. That is, in this embodiment, it is possible to expand the allowable range of the ultraviolet ray irradiation amount in the ultraviolet irradiation step rather than the allowable range of the ultraviolet ray irradiation amount in the ultraviolet irradiation step in such a case.

  In this embodiment, since the ultraviolet curable ink 5 contains an organic solvent, the thickness of the ultraviolet curable ink 5 applied to the foil 2 in the ink application process can be reduced. Therefore, in this embodiment, it becomes possible to make the end surface of the foil 2 formed after removing the unbonded portion of the foil 2 in the unbonded portion removing step a sharp end surface.

  In this embodiment, the viscosity of the ultraviolet curable ink 5 at room temperature is 3 mPa · sec to 18 mPa · sec. Therefore, in this embodiment, in the ink application process, the ultraviolet curable ink 5 can be applied to the foil 2 by discharging the ultraviolet curable ink 5 from the inkjet head 11. Further, in this embodiment, the ultraviolet curable ink has a viscosity of 20 mPa · sec or more when the organic solvent is removed, so that it can be applied to the foil 2 by evaporating and removing the organic solvent in the solvent removal step. It is possible to reliably prevent bleeding of the ultraviolet curable ink 5 that has been applied.

  In this embodiment, the ultraviolet irradiation step and the solvent removal step are performed simultaneously. When the ultraviolet curable ink 5 is irradiated with ultraviolet rays, a polymerization reaction starts and a polymerization reaction heat is generated. In this embodiment, this polymerization reaction heat is used to evaporate the organic solvent contained in the ultraviolet curable ink 5. Can be used. Therefore, in this embodiment, it is possible to evaporate and remove the organic solvent in a short time in the solvent removal step.

  In this embodiment, when the ultraviolet irradiation process is performed after the solvent removal process, the ultraviolet curable ink 5 applied to the foil 2 is compared with the case where the solvent removal process is performed after the ultraviolet irradiation process. It is possible to effectively prevent bleeding and to reliably remove the organic solvent contained in the ultraviolet curable ink 5.

(Modification 1 of decoration method)
FIG. 2 is a schematic diagram for explaining a decoration method according to another embodiment of the present invention. In FIG. 2, the same code | symbol is attached | subjected to the structure same as the form mentioned above.

  In the embodiment described above, the ultraviolet curable ink 5 is applied to the foil 2 in the ink application process. However, as shown in FIG. 2A, the ultraviolet curable ink 5 is applied to the object to be decorated 1 in the ink application process. May be applied. In this case, similarly to the above-described embodiment, in the ink application process, the ultraviolet curable ink 5 is ejected from the inkjet head 11 toward the object to be decorated 1 and the ultraviolet curable ink 5 is applied to the object 1 to be decorated. To do.

  In this case, in the ultraviolet irradiation process, the ultraviolet curable ink 5 applied to the object to be decorated 1 in the ink application process is irradiated with ultraviolet light, and in the solvent removal process, the object to be decorated 1 in the ink application process. The organic solvent of the applied ultraviolet curable ink 5 is removed by evaporation. In the ultraviolet irradiation step, the ultraviolet curable ink 5 is irradiated with ultraviolet rays by the UV irradiator 12 in the same manner as described above. Further, in the solvent removing step, the ultraviolet curable ink 5 is heated through the decorated body 1 by the heater 13 on which the decorated body 1 is placed, and the organic solvent of the ultraviolet curable ink 5 is evaporated and removed. To do.

  Thereafter, in the decorative object pasting step, as shown in FIG. 2B, the foil 2 is adhered to the surface of the ultraviolet curable ink 5 and the foil 2 is adhered to the object to be decorated 1. Similarly to the above-described embodiment, the decorative object sticking step is performed while the ultraviolet curable ink 5 remains adhesive enough to stick the foil 2 to the object to be decorated 1 after the ultraviolet irradiation step and the solvent removal step. Done. In the decorative object pasting step, the foil 2 is pressed against the surface of the ultraviolet curable ink 5 by the roller 15 or the like, for example, and the foil 2 is brought into close contact therewith.

  Thereafter, in the leaving step, the object to be decorated 1 is left until the ultraviolet curable ink 5 is completely cured. Further, when the ultraviolet curable ink 5 is completely cured and the foil 2 is bonded and fixed to the decorative body 1, in the unbonded portion removing step, the portion of the foil 2 that is not bonded to the decorative body 1, for example, And using an adhesive tape or the like (see FIG. 2C). When the removal of the unbonded portion of the foil 2 is finished, the decoration of the body 1 to be decorated is finished. Also in this modification, the same effect as the above-described embodiment can be obtained.

(Modification 2 of the decoration method)
FIG. 3 is a schematic diagram for explaining a decoration method according to another embodiment of the present invention. In FIG. 3, the same code | symbol is attached | subjected to the structure same as the form mentioned above and the modification 1. As shown in FIG.

  In the first modification of the decoration method described above, the surface 1a to be coated, which is the surface to which the ultraviolet curable ink 5 is coated, is a two-dimensional plane. The application surface 1a may be a three-dimensional curved surface, or may be constituted by a plurality of planes and curved surfaces combined three-dimensionally. For example, as shown in FIG. 3, the coated surface 1a of the decoration body 1 may be a three-dimensional convex curved surface.

  In this case, for example, as shown in FIG. 3A, an ultraviolet curable ink that does not contain an organic solvent is ejected from the ink-jet head 16 and applied to the substrate 7, and the UV irradiator 17 The three-dimensional object to be decorated 1 is formed by sequentially performing the process of irradiating the ultraviolet curable ink with ultraviolet rays and curing the ultraviolet curable ink. Thereafter, as in Modification 1, the ultraviolet curable ink 5 is applied to the coated surface 1a of the decorative body 1 in the ink application process, and the ultraviolet curable ink applied to the coated surface 1a in the ultraviolet irradiation process. 5 is irradiated with ultraviolet rays, and in the solvent removal step, the organic solvent of the ultraviolet curable ink 5 applied to the coated surface 1a is evaporated and removed (see FIG. 3B).

  Thereafter, in the decorative object pasting step, as shown in FIG. 3C, the foil 2 deposited on the base material 4 through the release layer 3 is brought into close contact with the surface of the ultraviolet curable ink 5 to be decorated. Affix foil 2 to 1. In the decorative object pasting step, for example, the base members 4 and 7 are pressed by the squeegee 14 or the roller 15 (not shown in FIG. 3C), and the foil 2 is brought into close contact with the surface of the ultraviolet curable ink 5. Thereafter, the substrate 4 is removed and the foil 2 is transferred to the decorated body 1 and the decorated body 1 is left until the ultraviolet curable ink 5 is completely cured. When the ultraviolet curable ink 5 is completely cured and the foil 2 is bonded and fixed to the decorated body 1, the portion of the foil 2 that is not bonded to the decorated body 1 is removed (see FIG. 3D). ). When the removal of the unbonded portion of the foil 2 is finished, the decoration of the body 1 to be decorated is finished. Also in this modification, the same effect as the above-described embodiment can be obtained.

  In the modification shown in FIG. 3, the ink-jet head 16 used when forming the three-dimensional object 1 and the ink-jet head 11 used in the ink application process are provided separately. The inkjet head 11 and the inkjet head 16 may be a common inkjet head. Further, in this modification, the UV irradiator 17 used when forming the three-dimensional object to be decorated 1 and the UV irradiator 12 used in the ink application process are provided separately. The unit 12 and the UV irradiator 17 may be a common UV irradiator.

(Other embodiments)
In the embodiment described above, the decorative object 2 attached to the object to be decorated 1 is a foil, but the decorative object 2 may be a powder such as metal powder, ceramic powder, plastic powder, inorganic pigment powder or flocky powder. It may be a block body formed in a block shape. In the above-described embodiment, the ultraviolet curable ink 5 is ejected from the inkjet head 11 in the ink application process, but the ultraviolet curable ink 5 may be ejected from a dispenser in the ink application process. In the ink application process, the ultraviolet curable ink 5 can be applied to the object to be decorated 1 or the foil 2 by a method other than the inkjet head method and the dispenser method. Further, in order to protect the ornament 2 or to color the ornament 2, a so-called special color ink such as a clear ink, a color ink or a white ink is used, and an ink jet method, a spray method, or other methods. Further, an uppermost layer such as an overcoat layer or a colored layer may be formed on the decoration 2.

1 object to be decorated 2 foil (decoration)
5 UV curable ink

Claims (6)

An ink application step of applying an ultraviolet curable ink containing an ultraviolet curable cationic polymerizable resin, a photopolymerization initiator, and an organic solvent to a decoration;
An ultraviolet irradiation step of irradiating the ultraviolet curable ink applied to the ornament in the ink application step with ultraviolet rays;
A solvent removal step of evaporating and removing the organic solvent of the ultraviolet curable ink applied to the ornament in the ink application step;
A step of attaching an ornament to the object to be decorated by adhering the surface of the ultraviolet curable ink to the object to be decorated, after the ultraviolet irradiation step and the solvent removing step; Decoration method. An ink application step of applying an ultraviolet curable ink containing an ultraviolet curable cationic polymerizable resin, a photopolymerization initiator, and an organic solvent to a body to be decorated;
An ultraviolet irradiation step of irradiating the ultraviolet curable ink applied to the object to be decorated in the ink application step with ultraviolet rays;
A solvent removal step of evaporating and removing the organic solvent of the ultraviolet curable ink applied to the object to be decorated in the ink application step;
A decoration comprising an ornament pasting step for adhering a decoration to the surface of the ultraviolet curable ink and pasting the ornament on the object to be decorated after the ultraviolet irradiation step and the solvent removal step. Method. The ultraviolet curable ink has a viscosity at 25 ° C. of 3 mPa · sec to 18 mPa · sec,
The decoration method according to claim 1 or 2, wherein the viscosity of the ultraviolet curable ink at 25 ° C when the organic solvent is removed is 20 mPa · sec or more.   The decoration method according to claim 1, wherein the decoration is a foil.   The decoration method according to claim 1, wherein the ultraviolet irradiation step is performed after the solvent removal step.   The decoration method according to any one of claims 1 to 4, wherein the ultraviolet irradiation step and the solvent removal step are performed simultaneously.

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