The main material of hot stamping foil is anodized aluminum, so hot stamping is also called anodized aluminum hot stamping. Hot stamping is to transfer the aluminum layer in the anodized aluminum to the surface of the substrate by using the principle of heat and pressure transfer. Let’s take a look at the techniques to improve the quality of hot stamping foil
1. Choose the right substrate
The editor tells you that the hot stamping substrate should be made of paper with dense texture, high smoothness and high surface strength, so as to obtain a good hot stamping effect and fully reflect the unique gloss of anodized aluminum.
2. To reasonably control the stamping pressure
The hot stamping pressure has a great relationship with the adhesion fastness of the hot stamping foil. Even if the temperature is right, if the pressure is not enough, it will not be able to make the stamping foil adhere to the substrate firmly, or cause color fading, imprinting, etc.; on the contrary, if the pressure is too high, the compression deformation of the liner and the substrate will be too large, resulting in paste The plate or print becomes thicker. Therefore, the hot stamping pressure should be adjusted carefully.
3. The hot stamping speed is as constant as possible
The editor tells you that the contact time is directly proportional to the hot stamping fastness under certain conditions, and the hot stamping speed determines the contact time between the anodized aluminum and the substrate. The hot stamping speed is slow, and the hot stamping foil has a long contact time with the substrate, and the bonding is relatively strong, which is conducive to hot stamping; on the contrary, the hot stamping speed is fast, the hot stamping contact time is short, and the hot-melt silicone resin layer and adhesive of the hot stamping foil If it is not completely melted, it will cause the hot stamping to fail or the imprinting to be blurred. Of course, the hot stamping speed must also be compatible with the pressure and temperature. If the hot stamping speed increases, the temperature and pressure should also be appropriately increased.