Prevent your DTF white ink from running down the PET film
Updated: Sep 23
Check your white ink saturation
For most prints, we recommend using around 60–70% white ink. Some printers or print settings may use 100% white ink to provide a stronger base for the colours. However, too much white ink can cause it to run. If this happens, try gradually reducing the white ink saturation until you achieve a good white base without excessive ink flow.
Try double-sided frosted PET film
If reducing the white ink doesn’t help, try our double-sided frosted DTF PET film. It has 7 coating layers, allowing it to absorb more ink than our standard 5-layer, single-sided film.
Use a heating plate
A heating plate can help dry the ink faster, particularly in colder weather or when using higher white-ink settings. The aim is to dry the ink to a level where it is almost dry but still slightly wet, so the powder can stick properly to the printed areas.
If the ink is not cured enough, especially in winter or humid conditions, excess moisture can cause the ink to run. When the powder is then applied, this can lead to problems such as air or moisture bubbles under the powder coating. Poor curing can also affect the durability of the transfer, causing the print to lift or come away from the film before pressing, or peel off the garment after transfer. It may also result in lower wash durability.
If your printer has a heating plate, make sure it is switched on and adjust the temperature to suit your environment and ink settings.
As a general example, we use around 35-40°C for the front and back plates in summer, and around 50-60°C in winter.
Keep your PET film dry
Moisture and humidity can affect how well the PET film absorbs ink. Store your film in a dry place away from moisture.
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