Introduction to Metallic Yarn

A yarn made of gold and silver as the main raw material or a thin strip film with gold and silver luster. Traditional gold and silver wire is divided into flat gold wire and round gold wire. The gold foil is glued to the paper and cut into a thin strip of about 0.5 mm to form a flat gold thread, and then the flat gold thread is wrapped around the cotton yarn or silk thread to form a round gold thread. Now some precious traditional fabrics such as Yunbrocade still use the above-mentioned traditional gold and silver silk. The chemical fiber film gold and silver wire developed in the 1940s is made of two layers of butyl cellulose acetate film glued to a layer of aluminum foil and then cut into thin strips. Later appeared with polyester film through aluminum, color coating and other processes made of polyester gold and silver wire. Polyester gold and silver wire has two-color gold and silver wire, colorful gold and silver wire, rainbow line, fluorescent line and so on. Duan inkstone is one of the precious stone products, is a unique stone in the water rock inkstone. It is characterized by lines that cross or stand in an inkstone. Yellow is called money; White lines are called silver lines. It plays a decorative role in the ink stone. The hardness of the gold and silver thread is the same as that of the inkstone itself. According to the test, the gold thread is formed by the pyrite vein after long-term action; Silver lines (including ice stripes) are formed by quartz veins.