JP3958403B2 - Method for producing metal decorative body - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method of manufacturing a metal decorative body used for, for example, an elevator hall door, a cab panel, an architectural interior material, and the like.
[0002]
[Prior art]
FIG. 6 is an explanatory view showing a conventional method for manufacturing a metal decorative body disclosed in, for example, Japanese Patent Laid-Open No. 6-320665. In this method, first, as shown in FIG. 6A, a transfer type coated sheet 4 is manufactured by printing a coloring pattern 2 with a sublimation type colorant on a transfer paper 3 using a sublimation type toner printer 1. Keep it.
[0003]
On the other hand, as shown in FIG. 6B, a base colored layer 6 is formed by applying a base anticorrosive coloring coating to the surface of the metal substrate 5 bent into a predetermined panel shape. After the foundation colored layer 6 is dried, a transparent overcoat is applied as shown in FIG. 6C to form a transparent resin layer 7 on the foundation colored layer 6. Thereafter, as shown in FIG. 6 (d), the transfer type coating sheet 4 is overlaid on the transparent resin layer 7. Then, as shown in FIG. 6E, the transfer type coating sheet 4 is heated and pressed at an appropriate temperature and pressure using horizontal and vertical heating and pressing rollers 8 and 9. As a result, the sublimation color toner on the transfer type coating sheet 4 sublimates and enters the transparent resin layer 7, and the colored pattern 2 is transferred and formed on the transparent resin layer 7. Finally, as shown in FIG. 6F, when the transfer paper 3 is peeled off, a metal decorative body is completed.
[0004]
[Problems to be solved by the invention]
In the conventional method for producing a metal decorative body as described above, although a complicated colored pattern 2 with high resolution can be formed, a process for printing the transfer-type coated sheet 4 and a transfer process are necessary. Is costly and expensive. Further, when coloring a single color over a wide area, there is a high possibility that color unevenness will occur during transfer due to differences in the structure and shape of the decorative plate. Furthermore, there are problems such as difficulty in transferring to a spherical surface or concave surface. In addition, the linear expansion coefficients of the transfer-type coated sheet 4 and the metal substrate 5 are different from each other, and the dimensions of the transfer-type coated sheet 4 are liable to change due to water absorption / drying, so that stable production is difficult.
[0005]
The present invention has been made to solve the above-mentioned problems, and does not require a transfer process, can stably form a colored pattern, and can reduce manufacturing costs. It aims at obtaining the manufacturing method of the metal ornament which can be performed.
[0006]
[Means for Solving the Problems]
The method for producing a metal decorative body according to the invention of claim 1 includes a step of forming a light transmissive resin layer on a metal substrate, a step of forming an ink jet receiving layer on the surface of the light transmissive resin layer, and ink jet printing by ink jet printing. The method includes a step of applying a sublimation colorant from the receiving layer, a step of sublimating the applied sublimation colorant by heating to enter the light-transmitting resin layer, and a step of removing the ink jet receiving layer.
[0007]
The method for producing a metal ornament according to the invention of claim 2 further includes a step of washing the sublimation coloring material remaining on the light-transmitting resin layer after removing the ink jet receiving layer.
[0008]
According to a third aspect of the present invention, there is provided a method for producing a metal decorative body, wherein the ink jet receiving layer is removed by wiping after the ink jet receiving layer is softened with warm water.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of a metal ornament manufactured by a method according to an embodiment of the present invention. In the figure, a base colored layer 12 that also serves as a rust preventive layer is formed on both surfaces of a flat metal substrate 11. On the base colored layer 12 on the surface side of the metal substrate 11, a transparent resin layer 13 as a light transmissive resin layer is formed. In the transparent resin layer 13, a sublimation coloring material 14 enters to form a colored pattern.
[0010]
Next, a manufacturing method will be described. First, base coating is performed on both surfaces of the metal substrate 11 to form the base coloring layer 12. Next, as shown in FIG. 2, a transparent resin layer 13 is formed by applying a paint made of a transparent resin on the base colored layer 12 on the surface side of the metal substrate 11. As a material of the transparent resin layer 13, for example, an acrylic resin, a polyester resin, a urethane resin, or the like is used.
[0011]
Thereafter, as shown in FIG. 3, a transparent inkjet receiving layer 15 is formed on the transparent resin layer 13. As the inkjet receiving layer 15, for example, a high-quality recording medium using porous alumina in which non-spherical alumina fine particles are oriented and a large number of linear pores are formed is used.
[0012]
Thereafter, as shown in FIG. 4, a colored pattern is formed on the inkjet receiving layer 15 by inkjet printing using the sublimation coloring material 14. At this time, the head 21 of the ink jet printer to be used is equipped with nozzles 22a to 22d for ejecting the sublimation coloring material 14 of a plurality of colors (here, magenta, cyan, yellow, and black). The driving of the head 21 and the injection of the sublimation coloring material 14 are controlled by a computer (not shown). The injected sublimation colorant 14 penetrates into the porous ink jet receiving layer 15.
[0013]
Thereafter, the sublimation coloring material 14 is heated and sublimated. Examples of the heating method include a method of putting in a heating furnace and a method using a hot press. By this heating, the sublimation coloring material 14 enters into the transparent resin layer 13, if not all, as shown in FIG. 5. Therefore, a colored pattern printed on the inkjet receiving layer 15 is formed on the transparent receiving layer 13.
[0014]
Next, after softening the inkjet receiving layer 15 with warm water, the inkjet receiving layer 15 is completely removed by wiping with a cloth or the like. Furthermore, the sublimation colorant 14 residue on the transparent resin layer 13 is washed with a solvent such as gasoline as necessary. Thereby, the metal decoration body in which the coloring pattern by the sublimation coloring material 14 is formed is completed.
[0015]
According to such a method, the transfer process is not required, and the sublimation coloring material 14 can be easily sublimated and colored, so that the manufacturing cost can be reduced. In addition, even when a single color is applied over a wide area, color unevenness is unlikely to occur, and coloring to a spherical surface or a concave surface is also possible.
[0016]
In the above example, the transparent resin layer 13 is shown as the light transmissive resin layer, but it may be translucent or colored and transparent.
Alternatively, the transparent resin layer 13 may be formed directly on the metal substrate 11 without the base colored layer.
Furthermore, the shape of the metal substrate may not be flat.
[0017]
【The invention's effect】
As described above, in the method for producing a metal decorative body according to the first aspect of the present invention, after the light-transmitting resin layer and the ink jet receiving layer are sequentially formed on the metal substrate, the sublimation type is formed on the ink jet receiving layer by ink jet printing. The coloring material is applied, and the applied sublimation coloring material is sublimated by heating to enter the light-transmitting resin layer, and then the ink-jet receiving layer is removed. Can be formed stably, and the manufacturing cost can be reduced.
[0018]
In the method for producing a metal decorative body according to the second aspect of the invention, the sublimation coloring material remaining on the light-transmitting resin layer is washed after removing the ink jet receiving layer, so that the finished surface is cleaned. Can do.
[0019]
In the method for producing a metal decorative body according to the third aspect of the invention, since the ink jet receiving layer is removed by wiping after the ink jet receiving layer is softened with warm water, the ink jet receiving layer can be easily removed. it can.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a metal decoration manufactured by a method according to an example of an embodiment of the present invention.
FIG. 2 is a cross-sectional view showing a state in the middle of manufacturing the metal decorative body of FIG.
3 is a cross-sectional view showing a state in the latter stage of FIG. 2. FIG.
4 is a cross-sectional view showing a state in the latter stage of FIG. 3. FIG.
5 is a cross-sectional view showing a state in the latter stage of FIG. 4. FIG.
FIG. 6 is an explanatory view showing an example of a conventional method for producing a metal decorative body.
[Explanation of symbols]
11 Metal substrate, 13 Transparent resin layer (light-transmitting resin layer), 14 Sublimation coloring material, 15 Ink-jet receiving layer.

Claims (3)

Forming a light transmissive resin layer on the metal substrate;
Forming an ink jet receiving layer on the surface of the light transmissive resin layer;
A step of applying a sublimation-type colorant from above the ink-jet receiving layer by ink-jet printing, and a step of sublimating the applied sublimation-type colorant by heating and entering the light-transmitting resin layer,
A method for producing a metal decorative body comprising a step of removing the ink jet receiving layer. 2. The method for producing a metal ornament according to claim 1, further comprising a step of washing the sublimation coloring material remaining on the light-transmitting resin layer after removing the ink jet receiving layer. The method for producing a metal decorative body according to claim 1 or 2, wherein the ink-jet receiving layer is removed by wiping after the ink-jet receiving layer is softened with warm water.

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