Dye sublimation is a method of applying an image to specially coated polyester fabrics.
Sublimation ink is unique in its ability to convert from a solid to a gas without going through a liquid form. The conversion is initiated by heat and controlled with pressure and time. The high temperature from a heat transfer press opens the pores of the polymer and allows the gas to enter. When the temperature drops, the pores close and the gas reverts to a solid state. The print then becomes part of the polymer.