What Do You Know about Sublimation?

I've shared quite a few blogs on sublimation technology, but still some people are confused with the sublimation process，so it's necessary to understand sublimation for better understanding of the dye sublimation printing process.

Basically, the phase of a substance is determined by the scale of space between the substance's atoms.In a phase change, heat energy is either added or taken away from the atoms to make them spread apart or congregate together.Solids' atoms are packed most closely while gases' atoms are connected most loosely.Therefore，if we want to turn the solid to gas, we just have to add the heat pressure to let the atoms spread apart.

Process

During printing, printing head moves over the ribbons and the process is repeated four times . Since only one ribbon is heated at a time, the finished printing media actually has four layers of sublimation ink .Then during transfer process, the heat from the heat press machine excites the atoms in the dye contained in the printed image, and they spread apart and turn from the solid form to the gaseous form. The gaseous dye permeates the transfer substrates, and as the atoms lose energy, they come closer together again and return to solid states.



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