JPH0243549B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for forming a decorative object, and in particular to a method for forming a decorative object using a radiation-cured resin as a coating agent. When a desired pattern such as letters or figures is formed using a radiation-cured resin on the surface of an object made of a radiation-transparent material, the radiation-cured resin is prevented from flowing and the pattern is not disrupted.

Glass mosaics, stained glass, etc. are examples of decorative objects formed by drawing patterns on the surface of glass plates, transparent synthetic resin plates, etc. This type of decoration was manufactured by drawing a desired pattern on the object with chemical paint and drying and curing it, but this type of paint requires a long time to dry and harden, resulting in extremely poor work efficiency. It was. In addition, since the adhesion to glass plates and synthetic resin plates is poor, the paint is likely to be repelled during painting, resulting in uneven coating thickness and shading in the pattern, as well as being prone to peeling off after curing. It was hot. In addition, this type of conventional chemical paint cures when the solvent in the paint evaporates, causing many fine cracks due to drying shrinkage during curing. There were drawbacks such as deterioration and discoloration, and the paint peeling off. In addition, when this type of decoration is fitted into a window frame and used as window glass, the paint tends to deteriorate and fade due to direct sunlight and condensation, and minute cracks may occur due to expansion and contraction due to temperature changes. It had some drawbacks such as peeling off.

Therefore, the present invention has been made for the purpose of providing a new method for forming decorative objects that eliminates the drawbacks of the conventional ones. Ultraviolet (UV) curing resin and electron beam (EB) with various features
This method uses radiation-cured resin such as hardened resin, and when forming desired patterns such as letters and figures with this type of resin, the uncured resin applied to the object flows and forms the pattern. In order to prevent the resin from collapsing, this type of resin is applied in advance along the outline of the desired pattern, and then irradiated with radiation to harden it to form a flow prevention frame.The radiation-cured resin is applied within this frame. It is painted and then irradiated with radiation again to harden it.

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, 1 is a transparent glass plate, and 2 is a flow prevention frame formed on the glass plate 1. The flow prevention frame 2 is made by applying UV resin in a linear manner along the contour of the desired pattern on the surface of the glass plate, applying ultraviolet rays from below the glass plate 1, and then applying UV resin to the top of the glass plate 1. It is formed by curing the UV resin by irradiating it with ultraviolet light (see Figures 2 and 3). In addition
The UV resin should be placed so that it does not flow on the glass plate 1.
Use a UV resin with relatively high viscosity. The reason why the ultraviolet rays are irradiated in the above order is as follows. In other words, radiation-cured resins such as UV resins contain a small amount of volatile substances, and when a thickly coated resin is irradiated with radiation from above as described above, the radiation hardens near the surface of the resin as well as the radiation irradiation. Because it hardens immediately, volatile substances are trapped inside and cannot evaporate into the air.
A whitening phenomenon occurs and the resin becomes cloudy. However, as described above, if the ultraviolet rays are first irradiated from below the glass plate 1, volatile substances within the resin can rise and evaporate from the resin surface into the air. If you first harden the lower part of the resin in this way and then irradiate ultraviolet rays from above to harden the upper part of the resin,
It is possible to prevent the occurrence of a whitening phenomenon, and it is also possible to uniformly harden thick resin.

Once the flow prevention frame 2 is formed, the flow prevention frame 2
UV resins 3a to 3h colored by adding a coloring agent of a desired color are applied in each frame divided by , slightly thinner than the flow prevention frame 2 (see FIG. 4). In this case, since the outline of the pattern is pre-formed in the flow prevention frame 2, it is extremely easy to apply the UV resins 3a to 3h, and the UV resins 3a to 3h do not flow.
The UV resins 3a to 3h will not mix with each other and the pattern will not collapse. In addition, if the surface to be coated with UV resins 3a to 3h is divided into multiple sections and the amount of UV resins 3a to 3h is applied according to the area within each frame, it is possible to each of
It is also possible to eliminate color shading by making the thickness of the UV resins 3a to 3h uniform. After the UV resins 3a to 3h are applied in this manner, the UV resins 3a to 3h are cured by irradiating ultraviolet rays from above (see FIG. 5). In this case, each UV resin 3a to 3h
Since it is applied thinly, there is little risk of whitening and clouding even if it is cured by irradiating it from above without irradiating ultraviolet rays from below, but it is necessary to completely prevent the occurrence of whitening. For example, as in the case of hardening and forming the flow prevention frame 2, ultraviolet rays may first be irradiated from below and then irradiated from above.

After each UV resin 3a to 3h has been cured, a transparent UV resin 4 is further applied on top of each UV resin 3a to 3h.
A to 3h are coated and the UV resin 4 is cured by irradiating ultraviolet rays from above again to complete the decorative board as a decoration (see Fig. 6). The UV resin 4 polishes each of the colored resins 3a to 3h, and protects each of the colored resins 3a to 3h to prevent deterioration and discoloration.
is not necessarily necessary. Note that when the UV resin 4 is not applied, it is desirable that each resin 3a to 3h be applied to approximately the same thickness as the flow prevention frame 2.

By the way, conventional paints dry and harden when the internal solvent evaporates, but radiation-curable resins such as UV resins harden by causing polymerization reactions, condensation reactions, crosslinking reactions, etc. when irradiated with radiation. In addition, the curing is extremely rapid, and therefore, this method has extremely high working efficiency and can be expected to reduce costs. In addition, this type of resin hardly causes any cracks when cured, and it has little change over time and is resistant to deterioration and discoloration, so it maintains sufficient esthetics for a long time. Furthermore, since it has very good adhesion to glass plates, synthetic resin plates, etc., it can be applied uniformly to these surfaces and is extremely difficult to peel off. Furthermore, the resin cured by the above-mentioned reactions has extremely strong physical strength and is resistant to scratches and peeling even when rubbed with a sharp metal piece, for example. Furthermore, since this type of resin has appropriate elasticity even after curing, it can protect the glass plate from external impact, and even if it expands and contracts due to temperature changes, it hardly cracks. Moreover, when this decorative board is used as window glass, if the resins 3a to 3h are applied thickly, the soundproofing and heat insulation properties will also be improved. In addition, this type of resin has extremely good adhesion between resins, so the flow prevention frame 2 and each resin 3a to 3h are closely bonded, and as described above, the resins are further stacked on top of the resins 3a to 3h. 4 can also be painted.

FIG. 7 shows another embodiment of the present invention, in which numeral 10 is an acrylic resin vase as a decoration, on the surface of which flow prevention frames 11 are formed with a fairly dense distribution density. Each frame divided by the flow prevention frame 11 is filled with colored EB.
The resins a ₁ to a _o are painted. This flow prevention frame 1
1 and colored EB resins a ₁ to _{a o} are also formed in the same manner as in the above embodiment. First, a flow prevention frame 11 is formed on the surface of the vase 10, and then each frame is colored with a desired color. The EB resins _a1 to _ao may be coated and cured by irradiation with electron beams. Although the surface of the main vase 10 is a curved surface, if the flow prevention frame 11 is formed quite densely as described above and the EB resins _a1 to _ao with a slightly higher viscosity are applied within the frame, the EB resin a ₁ ~
It is possible to considerably prevent the _ao from flowing along the surface of the vase 10, and it is possible to suppress variations in the thickness of each of the EB resins _a1 to _ao within a reasonable range. In this way, the present method can be applied even when the surface to be painted is a curved surface.

As explained above, the method for forming a decorative object according to the present invention involves coating the surface of the object 1 made of a radiation-transparent material with a radiation-curable resin in a heap along the outline of a desired pattern, and then irradiating the resin with radiation. After forming the flow prevention frame 2 by hardening, the flow prevention frame 2 is
The radiation curing resins 3a to 3h are painted within the frame, and the radiation curing resins 3a to 3h are irradiated with radiation to harden them, so the resins 3a to 3h flow and mix with each other, causing the pattern to collapse. It has various effects, such as being able to prevent the resins 3a to 3h from being damaged, making it easy to uniformly coat the surface of the object 1, having excellent workability, being resistant to deterioration and discoloration, and resistant to peeling off.

[Brief explanation of the drawing]

The figure shows an embodiment of the present invention.
The figure is a perspective view, Figures 2 and 3 are sectional views during work, Figure 4 is a perspective view, and Figure 5 is a sectional view during work.
FIG. 6 is a sectional view, and FIG. 7 is a side view of another embodiment of the present invention. 1...Glass plate as an object, 2,11...
Flow prevention frame, 3a-3h...UV resin, 10...
Vase as object, a ₁ ~ _{a o} ...EB resin.

Claims (1)

[Claims] 1. A radiation-curable resin is applied on the surface of an object 1 made of a radiation-transparent material along the outline of a desired pattern, and is cured by irradiating it with radiation to form a flow prevention frame 2. After forming the decoration, the radiation curing resins 3a to 3h are coated within the frame of the flow prevention frame 2, and the radiation curing resins 3a to 3h are irradiated with radiation to be cured. 2. When irradiating radiation, the radiation is irradiated from below the object 1, and then the radiation is irradiated from above the object 1 to form the flow prevention frame 2. Method for forming decorations as described in Section 1. 3. The method for forming a decorative object according to claim 1, wherein a transparent radiation-curable resin 4 is coated on the radiation-curable resins 3a to 3h, and is cured by irradiating it with radiation.