Print on the matte, coated side of DTF film — not the glossy back. Single-side DTF film has exactly one printable face; load it the wrong way and the ink beads, smears or lifts during curing, and the transfer will not release cleanly after pressing. Double-side film is coated on both faces, so either side can be printed. Below is how to tell the two sides apart before you waste a sheet, and what to confirm when you buy film in bulk.
What DTF film is made of
DTF transfer film is a PET (polyethylene terephthalate) base with an ink-receiving coating. The coated face is the side your printer lays ink onto; the untreated back stays smooth and glossy so the cured transfer can release onto the fabric. Epson's DTF Film Printing Guide describes this coated-film workflow for production printers, and xTool's explainer on which side to print notes the two faces feel different — one rougher, one smoother.
The rough or matte face is the coated, printable side. The smooth, glossy face is the release side. This distinction only exists on single-side film, which is why many production shops run double-side film to remove the loading risk entirely.
What goes wrong when you print on the wrong side
Loading a single-side roll back to front produces predictable failures, because the ink has no coating to grip:
- Ink beads and pools instead of wetting the surface
- The white underbase does not lay down evenly or hold
- After powdering and curing, the film will not release cleanly from the image
- You lose a full sheet of film, the ink deposit and the press time
These failures are the same regardless of printer brand, because they come from the film structure rather than the machine.
Three ways to identify the coated side
Supplier guides such as Winnerjet's beginner guide describe the same three practical checks. Run them once on a new roll or batch, since the exact finish can vary slightly between manufacturers.
| Test | What to do | What the printable (coated) side shows |
|---|---|---|
| Visual | Hold the film under light and look at both faces | A matte, slightly rough surface (the back stays glossy and smooth) |
| Water drop | Place a single drop of water on each face | The droplet spreads or sits on the coated side; it beads and rolls on the glossy back |
| Tape | Press a small piece of tape onto each face and peel | Tape grips the coated side and slips or lifts cleanly from the glossy back |
Use the test that is fastest for your setup — many operators find the water-drop test the most reliable when the matte finish is hard to see on a light roll.
Single side vs double side film
The coated-side question only applies to single-side film. On double-side film both faces are coated, so the roll can be loaded either way without a wrong-side failure. That convenience is the main reason distributors and production shops choose double side for high-volume work.
ChromaBind's DTF transfer film line carries both structures in the standard widths, with carton quantity, gross weight and CBM recorded per SKU for import quoting:
| Film type | Widths | Carton reference |
|---|---|---|
| Single side | 30cm, 33cm, 60cm | 2 or 4 rolls per carton |
| Double side | 30cm, 33cm, 60cm x 100m | 1, 2 or 4 rolls per carton |
See the single side vs double side DTF film guide for a fuller comparison of coating structure, and the film width guide if you are deciding between 30cm, 33cm and 60cm rolls.
Confirm the coated side before you order in bulk
Coating-side identification is one of the items a responsible film supplier should be able to confirm for their specific roll, alongside the peel type and width. Before committing to a bulk order:
- Ask whether the film is single side or double side, and how to identify the coated face on that roll
- Request a sample route — fee, freight, quantity and timing are confirmed case by case for your SKU and destination
- Check the recorded carton quantity, gross weight and CBM for the exact SKU you are quoting
- Confirm the HS reference as a quote reference (3920620000 for DTF film) — final customs classification stays with the importer or broker
Our DTF consumables testing checklist walks through a full sample evaluation, and the hot peel vs cold peel guide covers the peel choice that pairs with your powder and press settings.
Once you know your target film type, width and peel mode, request a quote and we will confirm the SKU-level packing, sample route and documentation status for your destination.