JP2586098B2 - 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 been reduced, and trading in gram units has been started. 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 1.0 g of gold is extended to a thickness of 15 μm, the size becomes about the size of a business card, and the appearance becomes sufficiently large. Since the patterns and characters can be easily distinguished, it is suitable for souvenirs.

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 a gift in the form of a card.

Further, in order to increase the strength, the thickness of the thin plate is, for example, 0.
If it is about 5mm, about 34g of gold is required to obtain a business card size card, which is very expensive and unsuitable for easy use as souvenirs and gifts .

"Means for solving the problem" In order to solve the above problems, 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, and a composite plate body consisting of a reinforcing plate joined to at least one surface of the thin plate, and having a partially opaque pictogram on the joining surface, and further comprising a composite plate body. A thin precious metal composite plate characterized in that both surfaces are covered with a transparent protective film and the total plate thickness is 0.015 to 3.0 mm.

If the plate thickness is less than 0.015 mm, the strength is low even if reinforced with a reinforcing plate, and if the plate thickness exceeds 3.0 mm, it becomes 2.7 mm even if the reinforcing plate is the thinnest, and if this reinforcing plate is a transparent decorative plate,
Emoticons appear distorted due to uneven thickness of the transparent part.

When the thickness of the thin plate is less than 0.005 mm, it becomes difficult to manufacture the thin plate due to rolling technology, and when performing marking, the thin plate is easily damaged, and when the thickness of the thin plate exceeds 0.3 mm, several grams of The area of the bullion becomes smaller and it does not look good.

"Action" In the thin precious metal composite plate of the present invention, the thickness is 0.00
A reinforcing plate is joined to at least one surface of a thin plate made of a noble metal or a noble metal alloy having a thickness of 5 to 0.3 mm, and the thickness is set to 0.015 to 3.0 mm, so that deformation and breakage can be prevented. Even with a precious metal of about several grams, it is possible to provide an ornamental card-like ornament having a relatively large area (about business card) and a good appearance.

Further, since the thickness of the thin precious metal composite plate and the thickness of the thin plate are set as described above, the thickness of the transparent decorative plate (the thickness of the transparent portion) is less than 2.7 mm. Therefore, it is possible to suppress the thickness unevenness of the transparent portion and the invasion of air and the like,
Pictograms on the transparent decorative plate do not look distorted.

Embodiment FIG. 1 to FIG. 3 show an embodiment of a thin-walled noble 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).

As shown in FIG. 1, a marking 2, such as a character, a symbol, or a pattern, is provided on one surface of the thin plate 1 by using an engraving. The thin plate 1 is thinned at the location stamped by this marking, whereby the marking 2 appears. However, if the thickness is 60 μm, the hole does not impair the appearance. If you use a suitable punch etc.
Arbitrary figures, patterns, characters, portraits and certification marks can be added 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, marking can be performed easily, quickly and at low cost.

The display content on the thin plate 1 is not particularly limited, but it is appropriate to use the material, quality, weight, etc. of the noble metal as a part of the display, and these are given for each purpose of the product. In addition to the mark, it can be uniformly applied in advance.

Further, a reinforcing plate 3 having the same shape as the thin plate 1 is superimposed on the other surface of the thin plate 1, and the thin plate 1 and the reinforcing plate 3 constitute a composite plate main body. As shown in FIG. 2, the reinforcing plate (transparent decorative plate) 3 is made of a transparent material such as acrylic resin or glass, and has a thickness of 0.05 to 2.
It is set to 5mm. The material of the reinforcing plate 3 does not necessarily have to be highly rigid, but may be somewhat flexible.

A pictogram 4 composed of an opaque portion is provided on the back surface of the reinforcing plate 3, that is, the joint surface with the thin plate 1. The pictogram 4 is drawn by an appropriate method such as application of a paint, relief engraving, etching, or a combination thereof, and the like. However, since the pictogram 4 is viewed from the front side of the reinforcing plate 3, it is drawn as a mirror image projected on a mirror. ing. 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. The contents of the pictograms displayed on the reinforcing plate 3 are not particularly limited. For example, in the case of a wedding present, a different display is often displayed for each lot received, such as the name of the bride and groom. But,
Since this display is not displayed on the thin plate 1 but is displayed on an acrylic plate or the like, it goes without saying that such a high-mix low-volume production is relatively easy.

Then, the thin plate 1 and the reinforcing plate 3 are laminated and covered with a transparent protective film 6 to produce a thin precious metal composite plate. The thickness of this manufactured thin precious metal composite board is
It is set to 0.015 to 3.0 mm.

According to the thin precious metal composite plate having the above structure, the thin plate 1 is reinforced by the reinforcing plate 3 and the plate thickness is set to 0.015 mm or more, so that the thin plate 1 is damaged or bent at the time of transportation or manual transfer. The situation is prevented and the commercial value is not lost.

Further, since the thickness of the thin precious metal composite plate is set to 0.015 to 3.0 mm and the thickness of the thin plate 1 is set to 0.005 to 0.3 mm, the total thickness of the reinforcing plate (transparent decorative plate) 3 and the protective film 6 ( (The thickness of the transparent part) is less than 2.7 mm. Therefore, unevenness in the thickness of the transparent portion and intrusion of air or the like can be suppressed, and the pictogram 4 applied to the back surface of the reinforcing plate 3 does not look distorted.

Furthermore, since the pictograms 4 applied to the reinforcing plate 3 appear to be raised against the gold color, a more excellent decorative effect can be obtained.

In addition, since the thin plate 1 is formed of gold having a purity of 99.99% or more, it is possible to exchange cash.

FIG. 4 shows another embodiment of the present invention. The thin precious metal composite plate shown in this figure has a thickness of 0.015 to 0.3
mm, the thickness of the thin plate 1 is set to 0.005 to 0.3 mm, and the thin plate 1 is a pair of reinforcing plates 3a, 3b (thickness: 0.05 to 0.25 mm).
It has a configuration sandwiched between. In this case, what is displayed on the thin plate 1 may be displayed on the reinforcing plates 3a and 3b.
There is little need to engrave. It should be noted that there is no particular difference in the material and the indication of the reinforcing plates 3a and 3b from those described above.

This embodiment further enhances the reinforcement, decoration, and display effects of the reinforcing plate 3 described above. In particular, when the thin plate 1 is further thinned (when 1 g of gold is rolled into a business card size, the thickness is reduced). 15 to 20 μm). Further, it is needless to say that the same effects as those of the first embodiment 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 precious metal composite plate of the present invention, a reinforcing plate is joined to at least one surface of a precious metal or a precious metal alloy having a thickness of 0.005 to 0.3 mm. And the plate thickness is set to 0.015 to 3.0 mm,
Damage can be prevented.

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

In addition, the thickness of the thin precious metal composite plate was set to 0.015 to 3.0 mm and the thickness of the thin plate was set to 0.005 to 0.3 mm, so that the thickness of the reinforcing plate (transparent decorative plate) (the thickness of the transparent part) was 2.7 mm. Therefore, unevenness in the thickness of the transparent portion and intrusion of air or the like can be suppressed, and the pictograms provided on the transparent decorative plate do not look distorted.

Furthermore, since the pictograms provided on the transparent decorative plate appear to be raised against the background of the color of the noble metal, a more excellent decorative effect can be obtained.

[Brief description of the drawings]

1 to 3 show an 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.
FIG. 3 is a plan view of a reinforcing plate (transparent decorative plate), FIG. 3 is a cross-sectional view of a composite plate, and FIG. 4 shows another embodiment, and is a cross-sectional view of the composite plate. 1 ... Thin plate, 3,3a, 3b ... Reinforcement plate (transparent decorative plate), 4 ... Emoji.

Claims (1)

(57) [Claims] 1. A thin plate made of a noble metal or a noble metal alloy and having a thickness of 0.005 to 0.3 mm, and a opaque pictogram which is joined to at least one surface of the thin plate and partially joined to the joining surface. A thin precious metal composite plate, comprising: a composite plate main body comprising a reinforcing plate, wherein both surfaces of the composite plate main body are coated with a transparent protective film, and the total plate thickness is 0.015 to 3.0 mm.