Thermal transfer is an emerging printing process that has been introduced abroad for more than 10 years. The printing method of the process is divided into two parts: transfer film printing and transfer processing. The transfer film printing adopts dot printing (resolution up to 300 dpi), and the pattern is pre-printed on the surface of the film. The printed pattern is rich in layers, colorful, and ever-changing. The color difference is small, the reproducibility is good, the effect of the design pattern can be achieved, and it is suitable for mass production.