Does the Gold leaf foils can be use for food?

Product Description

Introductory:

Gold paper is also called gold dust paper.  It refers to the special processing paper coated with copper powder.  Divided into single-side coating and double-side coating.  Variety is various, quantitative range is wide.  Base paper is a coating made of copper powder, porcelain clay and adhesives (casein or other water-soluble adhesives), or mixed with paints dissolved in organic solvents, etc., and coated on a coating machine.  Used as wrapping and decorative paper.  

Gold leaf paper is thin sheets hammered out of gold.  Due to the good ductility and plasticity of gold, one or two (31.25 grams) of pure gold can be hammered into a 10,000th of a millimeter thick, an area of 16.2 square meters of gold foil.  That is, one gram of gold can be beaten into about 0.5 square meters of pure gold foil paper with a thickness of 0.12um.  The standard specification of gold foil paper is 9.33*9.33cm, other commonly used specifications are 8*8cm, 10.9*10.9cm, 4.5*1.5cm, 2.75*2.75cm.  

Gold has stable properties, permanent color, oxidation resistance, moisture resistance, corrosion resistance, mildew resistance, insect bite, radiation resistance, gold foil paper made of gold has a wide range of uses.  The gold foil paper of the ancient legal system is first purified gold, and then hammered to make gold leaf with an area of 2.5 square centimeters. Then it is put in the black gold paper made by kerosene fuming, and then hammered by hand for 6-8 hours to make the gold leaf into foil with an area about 40 times that of the gold leaf, and then cut into a square.  

The traditional process of making gold foil paper is based on gold bars with gold content of 99.99% as the main raw material. After more than ten special processes such as washing, hammering and cutting foil, the paper presents golden color, bright and soft, as light as a feather and as thin as cicandy wings. The thickness is less than 0.12 micron  

History :

Gold leaf art foils is a traditional handicraft of the Chinese nation. It originated from the Eastern Jin Dynasty, matured in the Southern Dynasty, and was popular in the Song, Qi, Liang and Chen dynasties. Now The Longtan area of Nanjing (Jiangning) is the birthplace of gold foil paper, with a history of nearly 1700 years.  Beijing Dongling Cixi mausoleum inscription, is a typical gold foil products.  

Authenticity identification  

Generally, we can observe by the naked eye, real gold foil will appear green to light, imitation gold foil paper will not appear green to light;  There are real gold foil paper is much thinner than imitation gold foil paper, real gold foil paper is broken by hand, and imitation gold foil paper is much thicker than real gold foil paper, it will not be broken by hand, and real gold is not afraid of fire, with fire can also distinguish true and false, imitation gold foil main raw material is copper, copper through combustion will generate copper oxide and black, and real gold will not.  If we want to measure the amount of pure gold in gold foil, we have to use special equipment, and we can also tell by the eye, about 9 red, 8 yellow, and 7 blue.  That is, the content of gold more than 90 for red, content of 80 for yellow, content of 70 for blue.  

The production of gold foil paper has been integrated with modern science and technology. The auxiliary materials (such as black gold paper) and equipment used have been greatly innovated, and the output and quality have been greatly improved.  Modern science and technology has carried forward the traditional gold foil technology and developed new varieties of gold foil paper. For example, high-tech laser shallow carving is used to carve and bronze gold foil with 99% purity, which has the value of preservation, collection, commemoration and appreciation  

Edible gold leaf is a gold product that can be used to decorate food. Gold is considered "biologically inert," meaning it passes through the digestive tract without being absorbed. It is mostly used in desserts and candy making and is available in sheets and as flakes. It is one of the world's priciest foods, but considering it is real gold, the sheets and flakes are relatively inexpensive. It is important to buy quality gold leaf as cheaper versions contain impurities.

TEST REPORT says our products gold content 99.15%, so can be use to food.