First, professional thermal transfer equipment is required. For items such as ceramics and metals, thermal transfer coatings are required on the surface.
Second, the pattern feels a bit hard to the touch and has poor air permeability. It will become softer after washing, but the air permeability is still relatively poor.
Third. When the heat transfer T-shirt is pulled horizontally, the pattern will have small cracks corresponding to the fabric fibers. This is caused by the characteristics of thermal transfer itself and cannot be avoided.
Fourth. The color of the T-shirt will change after being pressed at high temperature. For example, the white color will turn yellow. This is caused by the evaporation of moisture in the T-shirt.
Fifth. Thermal transfer uses Sublimation Ink to first print the picture on the transfer paper, and then transfer it to the surface of the medium. There are several difficult problems to solve: color deviation and positioning deviation. The finished picture is also easier to scratch off and is firm. The performance is poor, and it is generally necessary to spray another layer of protective film. In addition, transfer printing on special media also requires flexographic printing.
Sixth. It requires skilled printing technicians with many years of experience.