How to determine the hot stamping temperature of the automatic hot stamping machine?

The hot stamping temperature has an obvious effect on the quality of hot stamping. If the temperature is too low, the isolation layer and the adhesive layer of the anodized aluminum will not melt sufficiently, which will cause the hot stamping or the hot stamping to be inadequate, and the imprinting will be incomplete and blurred. The hot stamping temperature must not be lower than the temperature resistance range of the anodized aluminum. The lower limit of this range is the temperature to ensure the melting of the anodized aluminum adhesive layer. If the temperature is too high, the hot-melt film will be melted beyond the range, which will cause anodized aluminum to be attached around the imprint, resulting in a paste plate; it will also oxidize and polymerize the synthetic resin and dye in the dyed layer of the anodized aluminum, causing the electrochemical aluminum imprint to bubble Or it may appear cloudy; high temperature will also cause oxidation of the surface of the anodized aluminum plating layer and dyed layer, which will make the hot stamping product lose its metallic luster and reduce the brightness.

The factors that should be considered to determine the best hot stamping temperature include the model and performance of the anodized aluminum, the stamping pressure, the stamping speed, the stamping area, the structure of the stamped graphics, the color and thickness of the ink layer of the base color of the printed matter, and the Product and the room temperature of the hot stamping workshop. When the hot stamping pressure is small, the machine speed is fast, the base color of the printed matter is thick, and the room temperature in the workshop is low, the hot stamping temperature should be appropriately increased. The range of hot stamping temperature is generally 70-180°C. After the optimal temperature is determined, it should be kept as constant as possible from beginning to end to ensure the stable quality of the same batch of products.

When there are different graphic structures on the same layout, choosing the same hot stamping temperature often cannot meet the requirements at the same time. There are two solutions to this situation: one is to choose two different types of anodized aluminum at the same temperature; the other is to use two electric heating plates under the conditions allowed by the layout (such as a larger interval between two pictures and texts) , It is controlled by two voltage regulating transformers to obtain two different temperatures to meet the needs of hot stamping.