Direct answer: Dye migration can occur when dye from a garment, often coloured polyester, moves into a print or transfer and changes its appearance. Heat and the particular fabric, dye and transfer combination can influence the result. Test the actual garment and process rather than assuming a universal fix.
Engineering Principles and Components
| Topic | Function | Practical check |
|---|---|---|
| Garment dye | Colourant may move from the fabric into a printed layer. | Material and dye behaviour vary by garment batch. |
| Heat exposure | Pressing or later conditions can influence migration. | Stay within supplier-approved garment and transfer settings. |
| Barrier systems | Some products are designed to reduce dye migration. | Verify compatibility and test on the actual garment. |
| Delayed appearance | A change may not be visible immediately after pressing. | Agree a suitable observation period and test with suppliers. |
Practical Shop Checklist
- Identify polyester content, garment colour and supplier instructions.
- Produce a representative sample including white areas on the actual garment.
- Ask suppliers about compatible low-temperature or barrier products; do not invent settings.
- Check results after an appropriate observation and wash test before approving the batch.
Related Engineering Guides
Start with how a piezo printhead works and digital inkjet machine anatomy. For a machine-specific question, share your model on our contact page.
Frequently Asked Questions
Why can white printing turn pink on a red shirt?
Dye migration from coloured fabric into the print is one possible cause, especially on polyester; diagnose the actual garment and process.
Does this happen on every polyester garment?
No. Results vary with garment dye, printing system, heat and subsequent conditions.
Is dye migration always visible immediately?
No. A colour shift may develop later, so agree an appropriate test period.
What is a dye-blocking transfer?
Some transfers include a barrier designed to reduce migration. Confirm compatibility and test on the garment.
Should I simply lower the press temperature?
Not without supplier guidance. Incorrect temperature can cause poor bonding; follow the approved specifications.
Does a clean nozzle check rule out dye migration?
No. Jetting and migration are different aspects of the workflow.
How can a shop reduce complaints?
Test an actual garment, use compatible products and document the approved appearance and care instructions.
