The hot stamping process mainly uses the principle of hot pressure transfer to transfer the aluminum layer in anodized aluminum to the surface of the substrate to form a special metallic effect.

The basic process of hot stamping requires a state of pressure, that is, when the anodized aluminum is pressed by the hot stamping plate and substrate, the anodized aluminum is heated to melt the hot-melt silicone resin layer and adhesive agent. , at this time, the viscosity of the silicone resin that is melted by heat becomes smaller, and the viscosity of the special heat-sensitive adhesive increases after being melted by heat, causing the aluminum layer to be peeled off from the anodized aluminum base film and transferred to the substrate at the same time.

As the pressure is removed during the process, the adhesive quickly cools and solidifies, and the aluminum layer firmly adheres to the substrate, completing a hot stamping process.

Extended information:

Problems with the hot stamping process

1. The discoloration of the electrochemical aluminum plate after pasting and hot stamping is mainly due to poor production of the hot stamping plate. It is caused by loose installation of aluminum or incorrect routing of anodized aluminum foil. The discoloration of anodized aluminum after hot stamping is mainly caused by the hot stamping temperature being too high.

2. Wrinkling of anodized aluminum can also easily cause uneven color stacking and discoloration of hot stamping, which can be solved by appropriately lowering the temperature. For the round flattening machine, a fan can be installed at the foil feeding area to keep the foil flowing and to prevent the anodized aluminum from touching the hot stamping plate and causing it to burn before hot stamping.

Baidu Encyclopedia-Hot Stamping