Three process parameters of thermal transfer film

Thermal transfer film has its own unique properties. In order to obtain the ideal hot stamping effect, the best temperature, pressure and speed must be strictly controlled. It has three strict process parameters:

1. Determination of temperature: when the temperature is too low, the hot stamping will not be able to be applied or the hot stamping will not be strong, and the imprint will become flowery; will bubble. To determine the best hot stamping temperature should consider the following factors: pressure, speed, area, room temperature and so on. The hot stamping temperature generally ranges from 140°C to 180°C. Once the optimum temperature is determined, it should be kept constant, and the temperature difference should fluctuate within ±2°C.

2. Determination of pressure: The hot stamping pressure is generally 4-6 kg/cm2. If the pressure is too small, the hot stamping film cannot be adhered to the substrate, which reduces the fastness; if the pressure is too large, the compression deformation of the substrate will increase, resulting in deformation of the pattern and thinning of the printed layer. When hot stamping complex and uneven products, it is necessary to pay more attention to the uniformity of each pressure point, and the pressure angle between the hot stamping wheel and the substrate is required to be higher.

3. Determination of speed: It should be determined according to the hot stamping area, and the power of heating temperature should be considered at the same time. Generally, the speed is first, then the pressure is determined, and finally the temperature is determined.