Treatment of electrochemical aluminum foil in hot stamping

There are many varieties of electrochemical aluminum foil, and the manufacturing process, batch and performance are different. In addition to the correct selection, attention should also be paid to the handling during processing.
A. Before hot stamping a new processed product or using a new type of anodized aluminum foil, a simple visual inspection should be carried out to see if the model matches the material to be ironed; open the rewound anodized aluminum foil and observe the surface of the film Whether there are trachoma, scratches, wrinkles, whether the hand feel is smooth, and whether the brightness meets the requirements. Good quality anodized aluminum foil reflects strong light and is crystal clear and shiny. If measured by an instrument, the light reflectance should reach about 85% evenly. Unconditional can be determined by visual inspection.
B. There are generally three types of plate materials for hot stamping electrochemical aluminum foil: copper plate (copper), zinc plate and copper-plated zinc plate. It is better to use the copper plate, because the copper plate has good heat resistance, heat transfer, and suitable elasticity, which is more durable than the other two plates and has a better hot stamping effect. If hot stamping small batches of work or single paper, you can choose zinc plate. The zinc plate is soft and should not be hot stamped too many times or under high pressure, otherwise the plate material will change easily and the hot stamping effect will not be good. Some units only use zinc plates, and sometimes need to change several plates, resulting in great waste.
The thickness of hot stamping plate is generally 1.5 ~ 2.5mm. According to the texture and thickness of the material to be scalded, choose a plate with an appropriate thickness. If the hot stamping plate is too thin, the hot stamping graphics and text will be blurred and blurred, and if it is too thick, it will cause waste.
For externally processed hot stamping plates, check whether there are burrs, uneven edges, unclear graphics, etc. before use, and unqualified parts must be corroded and trimmed before hot stamping on the plate.
C. After the inspection of the anodized aluminum foil, after the hot stamping plate is installed, try ironing first; and adjust or master the temperature, time and pressure of the hot plate according to the texture and area of the hot stamping material.
The above three points are the main links of hot stamping processing.
The pressure of the hot stamping book cover, except for the fabric cover, the general indentation depth is about 0.4mm; the hot stamping time is generally 0.5 ~ 1S; the hot stamping temperature is generally 110 ℃ ~ 145 ℃. Different pressure, time and temperature should be selected correctly according to the flatness of the surface of the object to be ironed, the type of material, etc., in order to ensure the quality of hot stamping to achieve the desired effect.