Pressure Affects Bronzing

The hot stamping transfer of the aluminum layer must be completed by pressure, and the stamping pressure affects the adhesion fastness of the anodized aluminum. Even if the temperature is right, if the pressure is insufficient, the anodized aluminum cannot be transferred to the substrate well, which will cause problems such as faint imprints and pattern; on the contrary, if the pressure is too high, the compression deformation of the liner and the substrate will be too large. The imprint will be thick, even sticky or stale. Usually, the hot stamping pressure should be appropriately adjusted to reduce the color, and the adhesion fastness is good as the criterion.

To adjust the hot stamping pressure, it is necessary to integrate various factors such as the substrate, the hot stamping temperature, the vehicle speed and the anodized aluminum itself. Generally speaking, the paper is strong and smooth, the ink layer printed is thick, and the hot stamping temperature is high and the speed of the car is slow, the stamping pressure should be lower, otherwise, it should be higher. The hot stamping pressure must be uniform. If you find that the hot stamping cannot be done locally, the pressure here is probably too small. A layer of thin paper should be placed on the flat plate at this place to balance the pressure.

Hot-stamped pads also have a greater impact on pressure. The hard liner can make the imprint beautiful, suitable for strong and smooth paper, such as coated paper, glass cardboard; while the soft liner is the opposite, the imprint is relatively thick, suitable for hot stamping with a large area, especially the surface is uneven , Paper with poor flatness, smoothness, and rough paper.

At the same time, the hot stamping foil should not be installed too tightly or too loosely. If it is too tight, the writing will be missing and broken; if it is too loose, the writing will be unclear and the plate will be blurred.