what is hot stamping

Hot stamping
is a dry printing method of lithography in which predried ink or foils are transferred to a surface at high temperatures. The non-polluting method has diversified since its rise to prominence in the 19th century to include a variety of colors and processes. Widely used on plastic and paper (where it is a common technique in security printing, it is applicable to other sources as well.
In a hot stamping machine, a die is mounted and heated, with the product to be stamped placed beneath it.[5] A metallized or painted roll-leaf carrier is inserted between the two, and the die presses down through it. The dry paint or foil used is impressed into the surface of the product. The dye-stamping process itself is non-polluting because the materials involved are dry.
Tools
Among the commonly used tools in hot stamping are dies and foil.[3] Dies may be made of metal or silicone rubber, and they may be shaped directly or cast. They can carry high levels of detail to be transferred to the surface and may be shaped to accommodate irregularities in the surface.