What Sublimation Is? What Sublimation Isn’t?

sublimation digital printing

What Sublimation Is:
First,  the technical stuff:  the official definition of sublimation is as follows:  “In chemistry, the direct conversion of a solid into a gas, without passage through a liquid stage.”  Dye sublimation is the process by which heat is applied to inks turning them into a gas and bonding the ink with the polyester fibers of fabric or the poly coating on hard goods.  The result of the bond is a print that won’t wear out until the imprinted  item does.
Sublimation is a process that has less expensive start up costs than most other decoration options.   Those who wanted to go all out and get the biggest printer package and a top of the line heat press and a ton of blanks and the latest graphic design software could probably still set up their business for less than $7500.   Those with smaller budgets, or who may already have some of the components like design software or a heat press, could most likely get started for a few thousand or less.

rotary heat transfer machine

Sublimation is a decoration technique that has a lower learning curve than some.   In order to create sublimated goods,  a person must know how to operate a heat press and an ink jet printer.  Some knowledge of graphic design and graphic design software is also helpful,  but not necessarily required.   
What Sublimation Isn’t:
Sublimation isn’t suitable for dark colors.   The printing disciplines that work on dark colors are those that offer an option for white.   Anything printed on dark shirt is usually printed over a white underbase.   If your printing process does not offer that option,  then it is not suitable for use with dark colors.   Sublimation does not offer an option for white ink.
Sublimation isn’t suitable for fabrics other than polyester.   Poly blends may print well enough for some people,  but use of a poly blend garment will result in a more distressed look.   For best results,  print on 100% polyester garments or poly coated items.   It should be noted that there are coating sprays available which can be used to turn almost anything into an item suitable for sublimation,  but application of those sprays or coatings outside of a professional coating booth can be tricky.
Sublimation isn’t intimidating.   Some people are worried they’ll ruin a few blanks when they start out.   Don’t worry,  that will happen,  it happens to everyone and it’s part of the learning process.   If you can handle a printer and a heat press,  you can handle sublimation.   Fear of the unknown keeps a lot of potential decorators from trying something new and that’s a shame.  Sublimation does have a slight learning curve,  but it’s not that difficult to master.