A double-sided embossed precious metal foil and its forming process

Abstract

The invention discloses a forming process of a double-sided embossed precious metal foil, which comprises the following steps: rolling a precious metal blank to form a precious metal foil sheet with a predetermined thickness; forming the precious metal foil sheet into a precious metal foil with a predetermined shape and size; Annealing the foil; cleaning and drying the precious metal foil; placing the precious metal foil to be embossed on the lower mold; selecting the upper mold according to the required pattern, and applying pressure to the upper surface of the precious metal foil to form a relief pattern; placing two pieces of precious metal foil The surface of the non-embossed pattern is opposite, and an adhesive layer is arranged between the two, and pressure is applied to form an integrated double-sided embossed precious metal foil. Compared with the prior art, on the basis of maximally meeting the minimum gram weight of the foil and realizing the maximum area, the forming process provided by the present invention can obtain a double-sided embossed precious metal foil, and better manufacturability can be obtained Higher product yield. On this basis, the present invention also provides a double-sided embossed precious metal foil made based on the forming process.

Description

technical field [0001] The invention relates to a manufacturing technology of precious metal products, in particular to a double-sided embossed precious metal foil and its forming process. Background technique [0002] Precious metals have high value-preserving properties and are favored for this, such as gold products. Many gold handicrafts on the market use gold as a carrier, organically integrating precious metals and culture through creative design and modern technology. This product has distinct cultural attributes, showing high design value, craft value and commemorative value. According to the product form, its main manifestations are: coins, chapters, strips, bricks and gold foils, etc. [0003] As we all know, gold foil is a thin sheet formed by the extension of gold, and its processing and production is a special traditional craft with a history of more than two thousand years. In the existing technology, gold bars with a gold content of 99.99% are turned into go...

AI Technical Summary

Problems solved by technology

Covering the pattern film on the surface of the gold foil will directly lose the color advantage of gold itself. In addition, the mimeograph pattern film cannot compare with the three-dimensional relief pattern on the gold foil body, which further directly affects the customer experience

In addition, the above problems also exist in the processing of other precious metal foil products

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