Direct-to-film (DTF) printing has become the most accessible way to put full-colour graphics on cotton, blends and dark garments without the setup cost of screen printing. It is also a process with more steps than people expect, and every extra step is a place to lose money.
Here is how the process works, what you actually need, and the failures we see most often.
The Workflow, Step by Step
- Print the design onto PET film. The printer lays down colour first, then a white underbase. The white layer is what makes the transfer opaque on dark garments.
- Apply hot-melt powder while the ink is still wet. The film passes through a powder shaker; the powder sticks only where there is ink.
- Shake off the excess and return it to the hopper. Excess powder is the difference between a soft print and a crunchy one.
- Cure the powder in an oven until it gels. Under-cured powder is the number one cause of washes falling apart.
- Heat press the transfer onto the garment, then peel. Most films are cold-peel or warm-peel; the film datasheet decides which.
What You Need
| Item | Notes |
|---|---|
| DTF printer | Usually built around Epson printheads. The i3200-A1 (3,200 nozzles, aqueous) is the common production choice; the XP600 is the entry-level option with fewer nozzles and lower throughput. |
| DTF pigment ink | Water-based pigment, with a dedicated white. Not the same formulation as sublimation or eco-solvent ink. |
| PET film | Coated for DTF; matte and glossy finishes behave differently. |
| Hot-melt powder | TPU adhesive powder, usually fine grade for detail and coarse for heavier coverage. |
| Powder shaker / oven | Some units combine both. |
| Heat press | Needs even pressure and accurate temperature – a cheap press with cold spots will ruin transfers. |
Where the Money Actually Goes
New DTF shops tend to budget for the printer and forget everything else. The recurring cost sits in consumables: white ink is used far more than any colour because it is printed under every design, PET film is consumed on every job including the failures, and powder is wasted every time the shaker is overfilled.
The two biggest cost leaks are reprints – caused by poor white opacity or powder problems – and white ink waste caused by letting the white channel sit idle. Price your work assuming a reprint rate above zero, then work at bringing it down.
Common Failures and What Causes Them
- White ink settles in the line. White pigment is dense and drops out of suspension. It needs circulation and regular agitation; a day of neglect can mean a clogged white channel.
- Powder does not stick evenly. Usually too little powder, powder applied too late, or film that has already dried.
- The transfer cracks or washes out. Under-cured powder, too little pressure on the press, or the wrong temperature for the film.
- Film curls or jams. Humidity. DTF film is sensitive to it; a dry room and sealed storage solve most of it.
- Clogged nozzles and mist buildup. Pigment ink dries on the head face. Daily nozzle checks and disciplined cleaning are not optional. See our article on cleaning a wide format printhead.
- Static attracting powder. Ground the machine and keep the room’s humidity in range.
FAQ
What is the difference between DTF and DTG?
DTG prints directly onto the garment and generally needs pre-treatment and a cotton-rich fabric. DTF prints onto a film that is then transferred, which works on cotton, blends and synthetics alike.
Which printhead is used in most DTF printers?
The Epson i3200 family dominates production machines, with the i3200-A1 being the aqueous version used for DTF. Entry-level machines often use the XP600. Both are available in our printhead range.
Do DTF inks work in an eco-solvent printer?
No. DTF ink is water-based pigment. Putting it in a solvent machine – or the reverse – will destroy the head. See our comparison of eco-solvent, UV and DTF ink.
How often should I clean the head on a DTF printer?
At minimum once per shift, plus a nozzle check at the start of every day. White channels deserve more attention than colour.
Consumables and Spares
We supply DTF ink, printheads for DTF machines, cap tops, wipers, dampers and cleaning liquid. Tell us your printer model through the contact form and we will match the parts for you.