Hot stamping technology is to transfer the aluminum layer in anodic alumina to the surface of the substrate by using the principle of hot pressing transfer, forming a special metal effect. Because the main material used in bronzing is anodized aluminum foil, bronzing is also called anodized hot stamping. Electrochemical aluminum foil is usually composed of multilayer materials, and the substrate is often P E, followed by separation coating, color coating, metal coating (aluminum plating) and glue coating. In the printing industry, electrochemical aluminum foil is commonly used for hot stamping on paper, which is called bronzing. Bronzing is a general term for a process. Hot stamping doesn't mean hot stamping is gold? There are many materials for gilding paper, including gold, silver, laser gold, laser silver, black, red, green and so on. Ordinary gold and laser gold bronzing. It can be used for hot stamping on most products, including gold cards, silver cards, laser cards and glass cards, which are widely used. Positioning holographic bronzing. Holographic laser positioning anodized aluminum is a special technical application in design. With corresponding anti-counterfeiting patterns, the anti-counterfeiting ability and quality of products can be greatly improved. This kind of anodic alumina is generally produced in China. Compared with imported goods, the price is cheaper, but the bronzing performance is slightly worse. The location of anodized by holographic laser is closely related to the control of hot stamping temperature, hot stamping pressure, vehicle speed and even hot stamping model. Special application of anodic alumina in technology. Printing after ironing is a new idea for cigarette label design and printing industry. The application of this process requires highly anodized aluminum. In addition to the requirements of accurate bronzing position, smooth and bright surface, even pressure, no foaming and no paste, special attention should be paid to the obvious indentation on the edge of bronzing pattern, and the bronzing anodized should have good adhesion on the hot stamping surface, and there should be no obvious scratches and scratches. As we all know, the bronzing process is actually a process in which paper is heated and pressed. For white cards and glass cards, special attention should be paid to the protection of semi-finished products, and various unfavorable factors of paper deformation should be reduced as much as possible in the production process, which is of great help to the smooth progress of stamping process and the improvement of product qualification rate.