What is dye migration in DTF printing?

What is a dye migration phenomenon?

This phenomenon is widely known, particularly with synthetic fabrics like polyester and fabrics that have been heavily saturated with dye. Because the fibres in synthetic fabric tend to be affected by the heat more than the natural fibres, when the heat is applied to transfer the design (DTF transfer) onto the fabric, the dye in the fabric rises (reactivates) and 'bleeds' into the ink (from the design/DTF transfer).

Troubleshooting for this

1- Increase white ink percentage, incrementally, towards 100%. Sometimes 75% is good, or you'll find that 90% is better. Just find a good white proportion by iteration.

2- apply lower heat press temperature but longer press time. For synthetic fabrics we would recommend 120°C - 130°C, and for natural fabric (cotton, linen) around 150°C. And press for between 30-60 seconds longer than usual.

If our recommended settings don't give the desired result, experiment with different transfer temperatures and times based on your fabric type, dye, and ink saturation. Lower temperatures with longer press times often work well, preventing dye migration. However, ensure proper wash fastness, as insufficient transfer time may prevent proper adhesion to the fabric.

3- Use DTF black adhesive power as it has built in dye migration blocking agent. Use this powder especially for synthetic fabrics and fabrics you know (from experience) has has had these issues.

Black powder solution as mentioned in troubleshooting tip