Proper storage and handling of DTF hot melt powder are essential to maintain its performance, adhesion strength, and printing quality. Please follow the guidelines below to ensure the best transfer results.
Keep in a Dry Environment
DTF hot melt powder is sensitive to moisture. Exposure to humidity may cause:
Store the powder in a clean, dry environment away from moisture and water sources.
Recommended Storage Conditions
Do not leave the powder open in the printing area, especially in humid environments.
Before using DTF hot melt powder, check that:
✓ The powder is dry and free-flowing
✓ No large clumps are present
✓ No foreign materials or contamination are visible
If the powder has absorbed moisture and formed hard lumps, it is recommended to replace it or test it before production use.
To maintain powder quality:
For best transfer results:
For opened powder:
Storage life may vary depending on environmental conditions and packaging status.
| Issue | Possible Cause |
|---|---|
| Powder clumping | High humidity exposure |
| Uneven powder coating | Reduced powder flowability |
| Weak adhesion after transfer | Moisture absorption or improper curing |
| Poor transfer quality | Incorrect storage or handling |
For consistent DTF printing quality:
Following these guidelines will help maintain the quality and reliability of DTF hot melt powder during storage and use.
Timeliness: The printed material must be immediately fed into the powdering machine after printing, as the ink needs to be still wet for proper powder adhesion. If the ink dries before powdering, it will result in powder leakage or uneven powder application.
Powder thickness: Thin and even is ideal. Too thick a layer causes a stiff feel and excess adhesive overflow; too thin leads to poor adhesion and peeling during washing.
Appearance after curing:
Under-cured: Powder has not fully melted, resulting in easy chipping of foil stamping, washing off, and a rough surface texture.
Over-cured: Powder undergoes thermal degradation, turning yellow, losing elasticity, cracking easily under stretching, and showing localized blackening and light leakage.
💡 Tip: A properly cured finish should have a smooth, matte to slightly glossy surface with no obvious granular texture—similar to an orange peel appearance.