Anodized aluminum hot stamping foil generally consists of 5 layers of different materials:

The first layer is the base film. It is composed of biaxially oriented polyester film, usually using PET, which is the intermediary that connects and supports in anodized aluminum.

The second layer is the peeling layer. Its main component is silicone resin, which will automatically melt and fall off after being heated, which is conducive to the transfer of aluminized layer.

The third layer is the colored layer. It is the main body of colored anodized aluminum (silver anodized aluminum does not have this layer), usually made of heat-resistant transparent synthetic resin (such as maleic anhydride resin) and dye, dissolved in an organic solvent, and then coated directly on the peeling layer. surface.

The fourth layer is an aluminum-plated layer. It is made of aluminum metal that vaporizes under high temperature and vacuum conditions, and evenly adheres to the surface of the colored layer, which plays a role in increasing the metallic luster.

The fifth layer is a hot melt adhesive layer. In anodized aluminum hot stamping, it is heated and melted and adheres to the surface of the printing material, which plays a role in fixing the aluminum-plated layer.