The national treasure secret technique, black gold paper.
Release time:
2023-07-22
Source:
Dongguan Jinsheng Gold Leaf Company
A simple understanding of gold foil is to hammer gold into thin sheets. Because gold has good ductility and plasticity, it can be shaped arbitrarily. However, to hammer gold into gold foil, the production process is very complex. Traditional gold foil production requires more than ten procedures such as cleaning, hammering, and cutting. Until the gold foil appears golden and thin like cicada wings. You should know that to beat a lump of gold into a 0.1 micron thin piece, it requires at least 25000 blows. In this process, a crucial piece of paper is needed, which is black gold paper.
Because in the refining process of gold foil, black gold paper must be used to wrap the gold sheet, so that the gold foil can be formed. And precisely because black gold paper has the characteristics of impact resistance, high temperature resistance, thin and unbreakable, it plays a crucial role in the production of gold foil.
Making black gold paper is a traditional skill in China. However, in earlier years, although China was able to produce black gold paper, the black gold paper in China consumed a large amount of gold, had a short lifespan, and the quality of the gold foil produced was not high. Therefore, its share in the international market was less than 1%. At that time, the black gold paper technology was regarded as a secret technique by many European countries, and they were even more wary of our country. They threatened that our country would not be able to produce it in 20 years, which made the largest gold foil manufacturing base in China very angry at that time. The gold foil factory vowed to change this phenomenon.
So after dozens of people and hundreds of repeated experiments, China only took 2 years to produce the world's leading new type of black gold paper. This black gold paper is coated with a high-temperature resistant adhesive layer on both sides, which can withstand millions of blows. The thickness of the gold foil is only 1.2 micrometers, and the quality is excellent.
From then on, China's gold foil quickly occupied the world, forming a monopoly. Foreigners no longer dared to underestimate China's gold foil, and black gold paper became a national treasure level secret technique of China.
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