Dye migration is real nightmare for printer’s when screen printing on the dreaded polyester.
Dye migration is a result of the dyes in the fabric becoming wet and active again when exposed to too much heat from flash cures and screen print dryers.
During the drying/heating process of screen printing, the migration tends to bleed through your screen printed design usually block lettering on a sport garment like a football shirt, and will turn a nice bright white lettering on a red polyester football to pink. The effect can take up to 24 hours to happen, so you may not see it immediately after coming off the dryer, please beware!
So how do you prevent this happening?
- Use a good dye blocking white, grey or even black in some cases.
- Never over flash the base colours, just touch dry with as little heat as possible.
- Make sure the dryer is running accurate and do not over cure on the final cure
- Do not stack the garments high after the print as they will retain the heat.
- If you’re ever unsure, always do a test print at least 24 hours prior to the actual print run.
Our Low Bleed white plastisol ink is a great dye blocking ink that can be used to prevent the dye migration. Follow the link below to find out more, if you fancy a chat or need to know further details get in touch with us on 01562 829009.