When we use something, we need to understand its performance clearly, especially when using heat transfer printing film, so as to avoid problems. Today, the editor is here to learn with you the parameters and precautions for using heat transfer printing films, as follows:
Thermal transfer film has its own unique characteristics. In order to obtain ideal hot stamping effect, the optimal temperature, pressure and speed must be strictly controlled. It has three strict process parameter targets:
- Determination of temperature: If the temperature is too low, the hot stamping will not go on or be strong, and the imprint will bloom; if the temperature is too high, the surface of the color layer will oxidize, causing the product to lose its luster and darken the color, which is serious. It will bubble. To determine the best hot stamping temperature, the following factors should be considered: pressure, speed, area, room temperature, etc. The general range of hot stamping temperature is 140℃-180℃. Once the optimal temperature is determined, it should be kept stable and the temperature difference should be within ±2℃.
- Determination of pressure: Hot stamping pressure is generally 4-6 kg/cm2. If the pressure is too small, the hot stamping film cannot adhere to the substrate, reducing the fastness; if the pressure is too high, the substrate will shrink and deform, resulting in pattern deformation and thinning of the printing layer. If you are hot stamping complex and uneven products, you must pay more attention to the uniform coordination of each pressure point, and the pressure angle between the hot stamping wheel and the substrate is required to be higher. Otherwise, it is easy to have some parts being strong and some parts not being strong.
- Determination of speed: It should be determined based on the hot stamping area, and the power of the heating temperature should also be considered. Generally, it is the primary speed, then determines the pressure, and then determines the temperature.