Sublimation Ghosting and Blowouts: Causes and Fixes
Learn what causes sublimation ghosting and blowouts on apparel, with a symptom, cause and fix table and prevention steps.
Why sublimation prints show shadow images or fuzzy edges, with a cause and fix table and steps to prevent both.
Sublimation ghosting is a faded second image caused by the transfer paper moving while the dye is still turning to gas, and blowouts are blurry, spread edges caused by too much heat, pressure, time or moisture, so the fixes are to lock the paper in place, use even and moderate pressure, dry the garment first and stay inside the blank maker's settings.
Definition: ghosting vs blowouts
Ghosting is a faded double or shadow image from paper movement during or right after pressing. A blowout (also called outgassing or bleeding) is a fuzzy halo where dye gas spreads past the design edge while the paper stays still, usually from excess heat, pressure, dwell time or moisture.
Part of the DAX Learning Hub: practical, exhibitor neutral guides for apparel decorating. New to the process? Start with Sublimation for Beginners.
What Causes Sublimation Ghosting?
Sublimation works because heat turns the printed dye into a gas that moves into polyester fibers or a polymer coating. Any movement of the paper while that gas is active leaves a second, lighter image beside the first.
- Paper shift when the press opens or closes. Fast opening presses and high tension can nudge the paper, especially on hard goods that hold heat.
- Paper not secured. Without heat resistant tape or a light repositionable adhesive, the sheet can slide.
- Low or uneven pressure. Weak contact leaves room for small movements during the press.
- Slow or dragged paper removal. The dye stays active for a short time after the press opens, so a hesitant peel can redeposit dye off register.
- Moisture. Water in the garment or paper turns to steam and can lift the sheet slightly.
What Causes Sublimation Blowouts?
Blowouts happen while the paper is still. The dye gas spreads sideways past the design edge, softening fine text and logos.
- Too much pressure can push dye gas outward along the surface.
- Too much heat or dwell time lets the image keep spreading. Fuzzy edges with otherwise good color often point to over pressing.
- Moisture flashes to steam and carries dye outward.
Temperature and time windows vary by blank, so check the Heat Press Temperature Chart for typical ranges and confirm with the blank maker's spec.
Symptom, Cause and Fix Table
| Symptom | Likely cause | Fix to try next |
|---|---|---|
| Faded shadow image offset to one side | Paper moved during or right after pressing | Tape the paper outside the image or use light repositionable spray; open the press smoothly; peel promptly in one motion |
| Ghosting only on some pieces | Uneven pressure or items near the platen edge | Center the item; check pressure across the platen |
| Fuzzy, spread edges with good color | Too much time, heat or pressure | Reduce dwell time first, then pressure, within the blank maker's range |
| Blurry edges plus spots or uneven solids | Moisture in the garment or paper | Pre-press the garment; store paper dry |
| Stray marks or ink on the next item | Dye residue on the press or cover sheets | Use fresh protective paper above and below; replace stained sheets |
| Whole image faded | Not enough heat or time, or low polyester content | Verify platen temperature; follow the blank spec; see Sublimation on Cotton for fiber limits |
How to Prevent Ghosting and Blowouts
- Pre-press the garment for a few seconds to drive out moisture and flatten wrinkles.
- Let the garment settle, then place the printed sheet and secure it with heat resistant tape outside the image area, or a light repositionable spray on larger fabric areas.
- Put protective paper above and below the garment to catch excess dye gas.
- Set time and temperature from the blank maker's spec, and confirm the platen reads true with heat strips or an infrared thermometer.
- Use firm, even pressure that makes full contact without crushing the fabric, and keep the item centered on the platen.
- Open the press smoothly rather than letting it pop open.
- Remove the paper promptly in one clean motion, without sliding it across the print.
- If edges spread, reduce dwell time first, then pressure, on the next test piece.
On polyester garments, the same heat that drives sublimation can also release dye already in a colored fabric. If that is the problem, see Dye Migration on Polyester.
Frequently Asked Questions About Sublimation Ghosting and Blowouts (FAQ)
Why does my sublimation print have a shadow?
A shadow beside the main image is ghosting. The paper moved while the dye was still a gas, usually when the press opened or closed, or when the paper was peeled slowly. Securing the sheet and opening the press smoothly usually stops it.
Does heat resistant tape stop ghosting?
Tape stops the most common cause, which is paper slipping. Place it outside the printed area. On larger fabric prints, a light repositionable adhesive spray can hold the sheet more evenly. Tape will not fix ghosting caused by moisture or uneven pressure.
Can too much pressure cause blowouts?
Yes. Heavy pressure can force dye gas sideways past the design edge. Too much heat, dwell time or moisture can do the same. Aim for firm, full contact rather than maximum pressure, and follow the blank maker's setting.
Can you fix a ghosted sublimation print?
Usually not on the same garment. Once the dye has moved into the fibers in the wrong place, pressing it again does not pull it back out. Treat the piece as a test, correct the cause and press a fresh blank.
Time, temperature and pressure settings vary by blank, paper and press. Follow your blank, paper and supplier spec for every product.
Small setup habits prevent most ghosting and blowouts. Browse more guides in the DAX Learning Hub, and check cities and dates on the DAX show schedule to compare sublimation papers, presses and blanks with suppliers in person.