Dye Sublimation, as a process is really very simple.
It is the method of applying an image to specially coated products and polyester based materials, using a combination of sublimation ink, heat and pressure.
Each individual material requires a different combination of these processes to achieve the correct result. The result is photographic quality images on a wide range of materials. There is no visible dot pattern as this is lost during the transfer process just as you would see in photographic film developing. 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 image is either printed direct to the material or in reverse on transfer paper. It is then fed into a roll fed heat press or flatbed heat press depending on the material where pressure is applied as well as a pre-set temperature for the material. Polyester based textiles are manufactured to accept the sublimation process.
The result is a much garment with brighter punchier images. One benefit is that the printed graphics can be washed as the dye is part of the material.