JP2653097B2 - Thin precious metal composite board - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial application field" The present invention can be easily used as souvenirs and gifts, and has a decorative value, such as gold, silver,
The present invention relates to a card-shaped thin precious metal composite plate mainly composed of a precious metal such as platinum.

[Prior Art] Conventionally, a small gold nugget has been provided with a pattern on its surface by being stamped using a mold as seen in coins and medals.

By the way, in recent years, the popularization of gold has progressed, and the handling unit of gold has become smaller, so that gold has been traded in gram units. However, such a small amount of gold pressed and molded as a coin or medal while having a certain thickness does not look good because of its very small shape, and is less effective as a souvenir or gift. was there.

Therefore, it is conceivable that the gold ingot is rolled into a thin plate shape, the surface of which is marked by engraving or the like, and a pattern or character or the like according to the purpose is added. In this case, for example
When 3.0 g of gold is extended to a thickness of 60 μm, the size becomes about the size of a business card, which makes it look good, and it is suitable for souvenirs because patterns and characters can be easily distinguished.

However, the thin plate obtained by rolling the gold ingot to about several tens of μm as described above has a small strength and is easily deformed or broken, so even if the surface of the thin plate is marked by engraving or the like,
In fact, it is impossible to use it as a souvenir or gift in the form of a card.

The present invention has been made in view of the above-mentioned problems of the related art, and has as its object to provide a thin precious metal composite plate which has a sufficient appearance, high strength, and can prevent deformation and breakage.

`` Means for solving the problems '' In order to solve the above problems, the present invention, to achieve the above object, the present invention is made of a noble metal or a noble metal alloy and has a thickness of 0.005 to 0.3 mm Is a thin plate,
It is characterized by being covered with a transparent protective film from both sides.

Further, the protective film covers all the end faces of the thin plate.

Further, the surface of the protective film is marked.

And on the joining surface of the protective film with the thin plate,
Emoticons consisting of opaque parts are given. If the thickness of the thin plate is less than 0.005 mm, it will be difficult to manufacture the thin plate due to rolling technology, and the thin plate will be easily damaged when marking, and if the thickness exceeds 0.3 mm, the thin plate itself will be sufficient Although a high strength can be obtained, the area of a few gram of gold bullion is small, and it does not look good.

"Action" In the thin noble metal composite plate of the present invention, a thin plate made of a noble metal or a noble metal alloy is covered with a transparent protective film,
Since the thin plate is reinforced by this protective film, deformation and breakage can be prevented, so that even with a precious metal of about several grams, it is possible to provide a decorative article having a relatively large area (approximately a business card) and a good appearance. it can.

"Embodiment" Figs. 1 to 4 show a first embodiment of a thin precious metal composite plate of the present invention. In the drawings, reference numeral 1 denotes a thin plate. The thin plate 1 is obtained by repeatedly rolling a gold ingot having a purity of 99.99% or more to a thickness of 60 μm and cutting it into a business card size (weight: 3.0 g).

On one surface of the thin plate 1, a marking 2, such as a character, a symbol, or a pattern, is provided by using an engraving. At the location stamped by this marking, the thickness of the thin plate 1 is reduced and the marking 2 appears.
If it is μm, there is no hole and the appearance is not impaired.
If a suitable punch is used for the engraving, an arbitrary figure, pattern, character, portrait, or certification mark can be given to the thin plate 1. This marking may be performed not only by engraving but also by using, for example, a laser beam. In this case, the marking can be performed easily, quickly, and at low cost.

The display contents on the thin plate 1 are not particularly limited. It is appropriate that the material, quality, weight, and the like of the noble metal are part of the display, and these can be uniformly provided in advance separately from the marks provided for each purpose of the product.

The thin plate 1 is covered with a transparent protective film 3. The protective film 3 is made of a resin such as acrylic.
As shown in the figure, a resin film 3a covering one surface of the thin plate 1;
And a resin film 3b covering the other surface.

As shown in FIG. 3, these resin films 3a and 3b
It is formed in a slightly larger size (length and width are about 1 mm longer on one side), and the thin plate 1 is inserted between them, and their edges are bound together.

In this manner, the thin plate 1 is sandwiched between the protective films (resin films 3a, 3b) that are transparent from both sides, and all the end surfaces of the thin plate 1 are also covered with the protective films (resin films 3a, 3b). Moisture and dust do not enter between the protective film (resin films 3a and 3b), and the product price increases.

The resin film 3a covers the surface (one surface) of the thin plate 1 on which the markings 2 are applied, prevents dirt from adhering to this surface, and reinforces the thin plate 1.

Further, the resin film 3b covers the other surface of the thin plate 1 to prevent adhesion of dirt to this surface and reinforce the thin plate 1. On the back surface of the resin film 3b, that is, the joining surface with the other surface of the thin plate 1, as shown in FIG. The pictogram 4 is drawn by a method such as application of paint, relief engraving, etching and the like, and a method combining them, etc. Have been. Further, the opaque portion may be the portion of pictogram 4 or the background portion of the pictogram, or the portion of the pictogram may be cut out to expose gold to the portion. Although the contents of pictographs displayed on the resin film 3b are not particularly limited, for example, in the case of a wedding gift, a different display is often displayed for each lot received, such as the name of a bride and a groom. However, since this display is not displayed on the thin plate 1 but on the resin film 3b, it goes without saying that such a high-mix low-volume production is relatively easy.

According to the thin precious metal composite plate having the above configuration, the thin plate 1 is covered with the protective film 3 (resin films 3a and 3b) and reinforced, so that the thin plate 1 may be damaged or bent at the time of transportation or manual transfer. Is prevented, the commercial value is not impaired, and the adhesion of dirt to the thin plate 1 can be prevented.

In addition, since the pictogram 4 is provided on the back surface of the resin film 3b, that is, the bonding surface with the thin plate 1, the pictogram 4 does not peel off or discolor during the above-mentioned transportation or manual transfer. .

Furthermore, since the pictograms 4 applied to the resin film 3b appear to be raised against the gold color background, a more excellent decorative effect can be obtained.

FIG. 5 shows a second embodiment of the present invention. The thin precious metal composite plate shown in FIG. 5 has a configuration in which the above-mentioned markings 2 are applied to a resin film 3a constituting a protective film 3. In this case, the content to be displayed on the thin plate 1 may be displayed on the resin film 3a, and there is little need to engrave the thin plate 1.

This embodiment has a feature that it can be adopted even when the thin plate 1 is further thinned (when 1 g of gold is rolled into a business card size, the thickness becomes 15 to 20 μm).
In this embodiment, after the thin plate 1 is covered with the protective film 3, a pictogram or the like may be stamped on the surface by pressing or the like.

FIG. 6 shows a third embodiment of the present invention. The thin precious metal composite plate shown in FIG.
A decorative plate 5 having an area smaller than this surface is placed, and these are covered with a transparent protective film 6.

A pictograph 7 having an uneven shape is formed on the surface of the decorative board 5, and this pictograph 7 has one surface of the protective film 6 raised and lowered in an uneven shape.

In the thin precious metal composite plate having such a configuration, the pictograph 7 having an uneven shape emerges on one surface (one surface of the protective film 6), so that the pictograph 7 looks three-dimensional, and furthermore, is decorated. Since the plate 5 itself appears to be raised against the background of the gold color, a more excellent decorative effect can be obtained.

Further, if a part of the pictogram 7 is made into Braille, or a symbol that can be identified even in darkness, the usefulness will not be further increased.

Furthermore, if the thin plate 1 is made extremely thin (5 to 15 μm),
The uneven pictograph 7 presses the thin plate 1 and appears three-dimensionally on the other surface of the thin precious metal composite plate, so that a more excellent decorative effect can be obtained.

In the above embodiment, gold is used as the material of the thin plate 1. However, the present invention is not limited to this, and an appropriate material such as silver or platinum or an alloy thereof may be used.

[Effects of the Invention] As described above, according to the thin noble metal composite plate of the present invention, a thin plate made of a noble metal or a noble metal alloy is covered with a transparent protective film from both sides thereof, and the thin plate is covered with the protective film. Because of protection and reinforcement, deformation and breakage can be prevented even if the thin plate is extremely thin (thickness of 0.005 to 0.3 mm).

Therefore, even with a precious metal of about several grams, it is possible to provide a decorative article having a relatively large area (approximately a business card).

Further, by covering all the end surfaces of the thin plate with the protective film, moisture and dust do not enter between the thin plate and the protective film, and the commercial value is high.

Further, by marking on the surface of the protective film, it is not necessary to make a mark on the thin plate that may be damaged, especially when the thin plate is extremely thin, about 15 to 20 μm.

By applying pictograms consisting of opaque parts to the joint surface of the protective film with the thin plate, the pictograms may peel off during transportation or manual transfer,
Since there is no discoloration and the pictograms appear to be raised against the background of the color of the thin plate, a better decoration effect can be obtained.

[Brief description of the drawings]

1 to 4 show a first embodiment of a thin precious metal composite plate according to the present invention. FIG. 1 is a plan view of the thin plate, and FIG. 2 is a perspective view showing a process of coating the thin plate with a protective film. Figure, third
FIG. 4 is a perspective view of a thin precious metal composite plate, FIG. 4 is a plan view of a protective film provided with pictograms, and FIG. 5 is a second embodiment of the present invention, showing a process of coating a thin plate with a protective film. Fig. 6
The figure shows a third embodiment and is a cross-sectional view of a thin precious metal composite plate. 1 ... Thin plate, 3,6 ... Protective film.

Claims (4)

(57) [Claims] 1. A thin noble metal composite plate comprising a thin plate made of a noble metal or a noble metal alloy and having a plate thickness of 0.005 to 0.3 mm sandwiched between transparent protective films on both sides thereof. 2. The thin precious metal composite plate according to claim 1, wherein said protective film covers all the end faces of said thin plate. 3. The thin precious metal composite plate according to claim 1, wherein a marking is provided on a surface of the protective film. 4. The thin precious metal composite plate according to claim 1, wherein a pictogram consisting of an opaque portion is provided on a joint surface of the protective film with the thin plate.