How to Name of the gold foil leaf?

How to Name of the gold foil leaf?

The gold foil was tested by spectral analysis and aqua regia, and the gold content of the gold foil was determined by ICP-AES. According to the industry standard of the People's Republic of China, gold film naming, and expression of gold content percentage, such as gold film 99%, gold film 99.9% and so on, rather than K named.

Development history
When Emperor Qianlong of the Qing Dynasty made a private visit to South of the Yangtze River, he made a special trip to visit the gold leaf ancestral hall of Ge Xianweng (Ge Hong, an alchemist in the Eastern Jin Dynasty), the ancestral master of the gold leaf craft. The Eastern Jin Dynasty has a history of more than 1,700 years. More than 10 years ago, a large number of funeraries with gold foil were discovered in the excavation of the Han tomb in Laoshan, which caused a stir around the world. This pushed forward the history of Chinese gold foil technology from 1700 years ago to 1000 years, and the mysterious gold foil once again became the focus of people's attention. The production of gold and silver foil and the installation of brocade were recorded in Danyang Records and other documents. Qin Tao-yu of the Tang Dynasty wrote in the poem "Poor Girl" : "Peng door did not know the good Luo Xiang, to be good medium also self-injury. Who love romantic high style, a total flow when the frugal dressing. Dare to Kua needle clever ten fingers, not to draw the double eyebrow fight long. Bitter hate every year pressure gold thread, for others to make wedding clothes ".

In the long history, the feudal ruling class to show off their wealth and honor, emperors and nobles of the dragon robes, imperial concubines of the coronet Xia Xia embroidered with gold and silver thread woven; Gold foil is used in palace decoration, temples and Buddha decoration gold. In the Ming and Qing Dynasties, Yunjin weaving houses were set up. At that time, gold foil and gold thread flourished with the development of Yunjin. Nearly ten thousand craftsmen engaged in this industry. By the end of the Qing Dynasty and the beginning of the Republic of China, due to the war and the incompetence of feudal rule, the production and operation of the gold leaf and gold thread industry was also severely damaged.

According to the genealogy and oral transmission of old artists of gold leaf, the production of gold leaf and gold thread was at least 120 years ago, that is, the Qing Dynasty. Early Qing city there are more than 30 gold leaf, gold line production households, workers more than 200. Around the Taiping Heavenly Kingdom, due to the need for a large amount of gold foil for decoration in the construction of the Heavenly Palace and other projects, a special department of gold foil was set up, with three to four hundred workers in charge.

Gold foil production process is unique, high technical requirements, from ancient times to the present. Always made by hand. The main production process is: Hua Tiao melts the gold bullion into fine bars; Patting leaves will beat the gold bar, cut into a few millimeters of the square slice; This kind of paper produced in Zhejiang Shangyu, Fuyang area, with the raw bamboo as material, and after 5 seasons of soaking, retting finally made, it is also called "five Fu paper", with 2016 sheets of 20 cm square Wujin paper folded into a box, commonly known as "home", a total of 2014 pieces of small gold pieces, After the outer layer is wrapped with kraft paper, it can be foiled. To beat the foil, one person should hold a hammer of several kilograms to beat, and the other person should hold the hammer to beat the upper and lower, so that the small gold pieces in the "home" can be beaten into very thin gold foil; The gold foil is picked out from the raw materials with feathers and placed on another paper base, and cut into various sizes of gold foil products with bamboo knives according to the specifications and standards. In the late 1970s, artificial beating was changed to machine beating foil, so that foil workers could be freed from heavy manual labor.