Foil stamping “is not” using real metal, so why is it called foil stamping?
Before the 1930s, people did use gold or silver to make foil stamping. Because the material of metal is relatively stable, it is not easy to oxidize in the air. The metal has good ductility. Through the production process, it is constantly beaten into thin slices, which is the previous gold leaf and then coated with protein glue on the surface, it can be used. For hot stamping.
Back in the modern age, for cost and convenience, people have already researched the replacement of “electrochemical aluminum”, which is low in cost, not easy to oxidize, and has a good gloss. So it is quickly produced and widely used, so the current “foil stamping” is no longer true. It’s not real gold, but people still habitually call it “hot stamping.”
In addition, besides stamping foil and silver, there are many colors to choose from.