The emergence of water transfer printing film can be regarded as a significant advancement in printing technology. Because there are many products that are difficult to print directly, with this medium, people can first print the graphics and text on an easily printable substrate using mature printing techniques, and then the water transfer process can transfer the graphics and text to the substrate. For example, items of a certain height, relatively heavy, and with strange shapes, or items of very small size, can all adopt the transfer printing process. Therefore, the graphics and text transferred to the surface of the object are usually not very realistic. However, water-based transfer printing is a process that transfers the complete graphics and text of the water transfer printing film to the surface of the substrate. It is similar to the heat transfer printing process, except that the transfer pressure relies on water pressure. It is a recently popular water transfer printing film technology. It can transfer small areas of graphic information on the substrate surface, similar to the printing effect of pad printing, but with lower investment costs and a simpler operation process, and is very popular among users.

The water transfer printing process does not require activation agents for activation, eliminating the pollution caused by organic solvents. It has obvious advantages in the production of handicrafts and decorative items. The operation requirements for water transfer film: 1. Before using the water transfer film, ensure the cleanliness and static electricity removal of the product. 2. The water drainage in the transfer water tank must be clean and thorough. There should be no floating impurities remaining on the water surface, and no residual ink film skin floating on the water surface. The water drainage should be gentle, and if it is too forceful, the water transfer film will produce bubbles. 3. When placing the water transfer film for covering, clearly identify the front and back of the film. When the film is not on the front or back, you can use your hand to dip a little water to test, the sticky side should be placed on the water surface, but be careful not to splash water onto the water transfer film. Pay attention to the film placement angle (30-40 degrees inclined), at the beginning, push the water transfer transfer covering film from one side of the water transfer tank to the other side, and be careful not to produce bubbles.