What is the technique of printing thermal transfer that often appears on hats?

What is the technique of printing thermal transfer that often appears on hats? Thermal transfer is also called sublimation. It is mainly for hat prints with high color accuracy and complicated patterns. These complicated patterns cannot be completed by ordinary silk screen printing. In addition to appearing on the hat, thermal transfer is also used in many products, such as ceramic cups, metal materials, clothes, high-end bicycles, etc., and the scope of use is very wide, Xiaobian is not to say here. Closer to home, Xiao Bian introduced the hat printing thermal transfer in the end is a trick.
Thermal transfer, first of all, is hot, so it is different from other printings. It is a kind of printing printed on the fabric through high temperature. Therefore, there is a certain requirement for the fabric, and it is necessary to print the fabric with high temperature resistance. After the fabric is sent to the computer thermal transfer printing machine, after a few minutes of heating, the image on the paper is printed on the hat fabric. The principle is the same as the tattoo sticker we sent when we were eating gum. On the hat.