JPH01263042A - Thin nobel metal composite plate - Google Patents

Abstract

PURPOSE:To obtain a decorative product having a relatively wide area and good appearance even by noble metal of several grams by superposing a thin plate made of noble metal or alloy of noble metal and a reinforcing plate, and allowing both to adhere. CONSTITUTION:A thin plate 2 is finished, for example, to 0.005-0.3mm of thickness by repeatedly rolling a gold lump having 99.99% or more of purity, cut in a name card size, and marks 2 such as characters, symbols, pattern, etc. are formed by engrating on one side face of the plate 1. A reinforcing plate 3 having the same shape as that of the plate 1 is superposed on the other side face of the plate 1 to adhere thereto. The plate 2 is made, for example, of resin such as acryl or the like or glass being transparent, and a picture or characters 4 made of opaque parts are formed on the rear face of the plate 3, i.e., the surface to adhere to the plate 1. The characters 4 are drawn by coating paint, relief engraving or the like, but since they are visually observed from the front side of the plate 3, they are drawn by mirror images to be projected to a mirror. It is reinforced by the plate 3 to prevent it from deforming, damaging, and a decorative product having good appearance can be provided even with several grams of noble metal.

Description

[Detailed Description of the Invention] "Industrial Application Field" This invention is directed to the use of gold, silver,
This invention relates to a card-shaped thin precious metal composite plate mainly made of precious metals such as platinum.

"Prior Art" Conventionally, small gold bullion has been given a pattern on its surface by being engraved using a metal mold, similar to that seen on coins and medals.

Incidentally, in recent years, as gold has become more popular, the units in which it is handled have become smaller and it has come to be bought and sold in duram units. However, when such small amounts of gold are press-molded into coins or medals with a certain thickness, their shapes are very small and unattractive, making them less effective as souvenirs or gifts. There was a problem.

Therefore, it is conceivable to roll a gold ingot into a thin plate, and then mark the surface of the plate by stamping or other means to add patterns or letters depending on the purpose.

In this case, for example, 3. If Og gold is rolled out to a thickness of 60 pm, it will be about the size of a business card, making it quite attractive to look at, and the patterns and letters are easy to distinguish, making it suitable for souvenirs and the like.

``Problems to be Solved by the Invention'' However, as mentioned above, thin plates made by rolling gold ingots to a thickness of several tens of micrometers have low strength and are easily deformed or damaged.
Even if the surface of the thin plate is marked by engraving or the like, it is practically impossible to use it as a card-shaped souvenir or gift.

"Means for Solving the Problems" In order to solve the above problems, the present invention provides a thin plate made of a precious metal or an alloy of precious metals with a thickness o, oos ~ 0.3 mm and a reinforcing plate superimposed. It is. 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 during marking. The area of the gold nugget will be smaller and it will not look good.

"Function" In the thin precious metal composite plate of the present invention, the thin plate made of a noble metal or an alloy of precious metals and the reinforcing plate are overlapped and bonded together, so that the thin plate is extremely thin (o, oos~0,3
mm), since it is reinforced by the reinforcing plate, it is possible to prevent deformation and breakage, and therefore, it is possible to provide a relatively wide-area, attractive-looking ornament even with a precious metal weighing only a few grams.

Embodiment FIGS. 1 to 3 show an embodiment of a thin precious metal composite plate of the present invention, and in the figures, reference numeral 1 indicates a thin plate. This thin plate 1 is made by repeatedly rolling a gold ingot with a purity of 99.99% or higher to a thickness of 60 μm, and cutting it into business card-sized pieces.Weight: 3. Og).

As shown in FIG. 1, markings 2 such as letters, symbols, patterns, etc. are provided on one surface of the thin plate 1 using stamps. The thin plate 1 becomes thinner at the location where the stamp is made, and the marking 2 appears, but if the thickness is 60 μm, there will be no holes and the aesthetic appearance will not be impaired. For engraving, use a suitable punch, etc.
Any figure, pattern, character, portrait, or certification mark can be added to the thin plate 1. This marking may be applied not only by engraving, but also by means of a laser beam, for example.
In this case, marking can be done easily, quickly, and inexpensively.

Although there are no particular restrictions on the content displayed on the thin plate 1, it is appropriate to include the material, grade, weight, etc. of the precious metal as part of the display, and these should be given for each purpose of the product. It can be uniformly provided in advance in addition to the mark.

In addition, on the other side of the thin plate 1, a reinforcing plate 3 having the same shape as the thin plate 1 is provided.
are overlapped and fixed with adhesive.

As shown in FIG. 2, this reinforcing plate 2 is a transparent one made of resin such as acrylic or glass, for example.
Its thickness is set to 50 μm to 2500 μm.

Note that the material of the thin plate 1 does not necessarily have to be highly rigid, and may be flexible to some extent.

On the back surface of the reinforcing plate 3, that is, on the joint surface with the thin plate 1, a pictogram 4 made of an opaque part is provided. This pictogram 4 is drawn by an appropriate method such as paint application, relief engraving, etching, or a combination of these methods, but since it is visually observed from the surface side of the reinforcing plate 3, it is drawn as a mirror image reflected on a mirror. ing. Further, the opaque portion may be used as the pictogram 4 portion, the background portion of the pictogram, or the pictogram portion may be cut out to expose gold in that portion. The contents of the pictographs displayed on this reinforcing plate 3 are not particularly limited, but for example, in the case of wedding gifts, the names of the bride and groom are often displayed differently depending on the loft ordered. However, since this display is not displayed on a thin plate 1 but on an acrylic plate or the like, it goes without saying that such high-mix, low-volume production can be carried out relatively easily.

According to the thin precious metal composite plate having the above structure, since the thin plate 1 is reinforced by the reinforcing plate 3, damage or bending during transportation or manual transfer is prevented, and the product value is increased. will not be damaged.

In addition, since the pictograms 4 are applied to the back side of the reinforcing plate 3, that is, the joint surface with the thin plate 1, the pictograms will not peel off or change color during the above-mentioned transportation or manual transfer. do not have.

Furthermore, since the pictograms 4 applied to the reinforcing plate 3 appear to stand out against the gold color background, a better decorative effect can be obtained.

FIG. 4 shows another embodiment of the present invention, and the thin noble metal composite plate shown in this figure has a thin plate 1 and a pair of reinforcing plates 3.
The structure is sandwiched between a and 3b. In this case,
The content to be displayed on the thin plate 1 may be displayed on the reinforcing plates 3a and 3b, and there is little need for marking on the thin plate 1. Note that there is no particular difference in the materials and markings of the reinforcing plates 3x and 3b from those described above.

In this embodiment, the reinforcement, decoration, and
This further strengthens the display effect, especially the thin plate 1.
It has the characteristic that it can be used even when the thickness becomes even thinner (when Ig gold is rolled to the size of a business card, the thickness becomes 15 to 20 μm).

In the above embodiment, gold is used as the material for the thin plate 1, but the material is not limited to this, and appropriate materials such as silver and platinum, or alloys thereof may also be used.

"Effects of the Invention" As explained above, according to the thin precious metal composite plate of the present invention, the thin plate made of a precious metal or an alloy of precious metals and the reinforcing plate are overlapped and bonded together, so that the thin plate is extremely thin (0.
, 005 to 0.3 mm), deformation and damage can be prevented because the reinforcing plate is used to reinforce the reinforcing plate.

Therefore, even if the precious metal weighs only a few grams, it is possible to provide an attractive ornament with a relatively large area (about the size of a business card).

[Brief explanation of the drawing]

1 to 3 show an embodiment of the thin noble metal composite plate of the present invention, FIG. 1 is a plan view of the thin plate, and FIG. 2 is a plan view of the thin plate.
3 is a sectional view of the composite plate, and FIG. 4 shows another embodiment, which is a sectional view of the composite plate. l...Thin plate, 3.3g, 3b...Reinforcement plate.

Claims (2)

[Claims] (1) A thin precious metal composite plate characterized by laminating a thin plate made of a precious metal or an alloy of precious metals and a reinforcing plate and bonding the two together. (2) The thin noble metal composite plate according to claim 1, wherein the thin plate has a thickness of 0.005 to 0.3 mm.