The process of making gold foil generally goes through twelve processes. They are: matching gold, melting gold bars, beating leaves, twisting, dropping gold knives, dipping gold knives, breaking gold knives, loading knives, pit kang, grinding, spreading and cutting gold foil.

Gold proportion: raw material gold is taken out of the warehouse, and the proportion is made according to the special requirements of product varieties, and silver and copper elements are added according to the quantitative proportion to make it reach the required gold content.

Melting gold bars: put the prepared gold into a crucible and melt it into gold water at high temperature, so that the doped trace silver and copper elements enter it evenly and the residue is separated out. Pour the gold water into a measuring tin can and cool it to make gold bars.

Leaf beating: After the coarse gold bars are hammered into fine gold bars by hand, they are cut into paper-thin Jin Yezi.

Making Twist: Cut Jin Yezi into 1 cm square gold leaves with a small bamboo knife. Golden leaves of this size are called golden twists.

Opening gold: put 10 cm square black gold paper into a constant temperature box for heating, so that the gold can be quickly extended after the gold twist is installed in the next working procedure.

Gold-dyed twins: put the gold-dyed twins in a black paper bag 10 cm square, and use two pieces of black paper and a gold-dyed twine, with a total of ***2048 layers. All golden twins are required to be placed in the center of black paper.

Open the gold thread: put the black paper bag wrapped with gold thread on the tin foil paper machine for rotary beating to make the paper-thin gold thread open thinner.

Packing: The gold thread wrapped in a 10 cm square Wujin paper bag is called "Jinkaizi". It needs to be made into foil, and then the "Golden Kaizi" is carefully put into a 20 cm square Wujin paper bag made of goose feathers (commonly known as Jiasheng). This process is called packing.

Cut the gold foil: cut the gold foil into regular shapes with a bamboo knife. This is called foil cutting.

Packaging: the prepared gold foil is packaged according to the purpose.

Distinguish:

Generally, we can observe with the naked eye that real gold foil will appear green to light, while imitation gold foil will not appear green to light; Also, real gold foil is much thinner than imitation gold foil, which is easy to break when touched, while imitation gold foil is much thicker than real gold foil and will not break when touched. Also, real gold is not afraid of fire, and it can distinguish between true and false when burned. The main raw material of imitation gold foil is copper. Burning copper oxide will turn black, but real gold will not.

If you want to measure the pure gold content of gold foil, you have to use a special instrument, but it can also be roughly distinguished by human eyes, including 9 red, 8 yellow and 7 blue. That is, those with a gold content of over 90 are light red, those with a gold content of 80 are light yellow, and those with a gold content of 70 are cyan. Nowadays, the production of gold foil has been integrated into modern science and technology, and the auxiliary materials (such as Wujin paper) and equipment used have been greatly innovated, and the output and quality have been greatly improved.

Modern science and technology will carry forward the traditional gold foil technology and develop new varieties of gold foil, such as high-tech laser shallow carving and bronzing on gold foil with purity of 99%, which has the value of preservation, collection, commemoration and appreciation.