What Is Sublimation? A Buyer's Definition


Sublimation defined from two published sources, compared with Direct-to-fabric sublimation printing, with questions to put to a supplier.

Short answer: Dye-sublimation printing uses heat to move dye into a material, and it is used on polyester. The design is either printed on paper and transferred, or printed directly onto the fabric.

What two sources say about Sublimation

Source pagePublisherWhat the page says
Dye-sublimation printerWikipediaExplains that dye-sublimation uses heat to move dye onto a material and is often called a dry process. Notes the name comes from an early belief that dye went straight from solid to gas, with 'dye diffusion' being more accurate.
Primer for printingAdvanced Textiles AssociationTrade article saying dye-sublimation uses heat to move dye into a material, by paper transfer or direct printing, and requires polyester. Says disperse dyes are the ink type designed for polyester and the dye becomes part of the fabric.

Key points

  • Heat moves the dye onto or into the material, and the process is often called a dry process. [1, 2]
  • The name came from an early belief that dye turned straight from solid to gas; later work showed some dye liquefies, so 'dye diffusion' is the more accurate term. [1]
  • In the transfer version a mirror-image design is printed on heat-resistant paper and then moved by a heat press. [1]
  • The Advanced Textiles Association article says dye-sublimation printers require polyester. [2]
  • Disperse dyes are the ink category designed for polyester and must go through sublimation to penetrate the fibres. [2]
  • The dye becomes part of the fabric instead of sitting on the surface, and each spot can take any shade, giving smooth continuous tones. [1, 2]

Sublimation compared with Direct-to-fabric sublimation printing

AspectSublimationDirect-to-fabric sublimation printingSource
MethodTransfer: image printed on paper first, then moved to polyester fabric.Image printed straight onto the fabric.[2]
EquipmentNeeds a heat press or calender to transfer the dye.Some machines can do both methods.[1, 2]

Where sources differ

The Wikipedia page is about dye-sublimation printers in general, not only textiles. The terms 'sublimation' and 'dye diffusion' are both used, and Wikipedia says the strict solid-to-gas picture is not fully accurate.

Questions to ask a supplier about Sublimation

  • [ ] Is the print transfer sublimation or direct-to-fabric sublimation?
  • [ ] Is the material polyester, and what is the fibre content?
  • [ ] How does the print perform in colourfastness to light and washing?
  • [ ] Is there any limit on dark or coloured base materials?
  • [ ] What transfer paper and heat settings are used?

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Sources: [1] Wikipedia, fetched 2026-11-12; [2] Advanced Textiles Association, fetched 2026-11-12. As of 2026-11-12. General information, not legal, customs or tax advice. Wording is paraphrased from the pages linked; your written quote and contract govern.