Ribbon heat transfer printing is a new printing process, which has been introduced from abroad for less than 10 years. the hot transfer printing of ribbon can be 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 printing pattern is rich in layers, colorful, changeable, small color difference and good reproducibility, which can meet the requirements of the designer and is suitable for mass production the overheated transfer machine can transfer the exquisite patterns on the transfer film on the product surface in one processing (heating and pressing). after forming, the ink layer and the product surface melt into one, which is lifelike and beautiful, which greatly improves the product grade. however, due to the high technical content of the process, many materials need to be imported