One or two pure gold can be hammered into gold foil with a thickness of one tenth of a millimeter and an area of 16.2 square meters because of its good ductility and plasticity. That is, one gram of gold can be made into pure gold foil of about 0.5 square meters with a thickness of 0. 12um.
The earliest discovery of gold foil was made in the Nile valley of ancient Egypt. In China, gold foil is a traditional handicraft of the Chinese nation. It originated in the Eastern Jin Dynasty, matured in the Southern Dynasties and was popular in Song, Qi, Liang and Chen Dynasties. Today, Nanjing Longtan area is the birthplace of gold foil, which has been passed down for nearly 1700 years. The inscription on the tomb of Cixi in Dongling, Beijing is a typical gold foil product.
Technical uses of gold foil:
There are many gold foil handicrafts, such as gold foil paintings, gold image cards, pure gold business cards, pure gold photos, crystal gold foil ornaments, gold foil ornaments, key rings, gold-lettered signboards and so on.
2. In addition to the above-mentioned gold foil handicrafts, there are also artists who make pictures into transparent films, and use better gold foil to make advanced simulation artworks and artistic background pictures with complicated technology on the negative.