Common Sublimation Printing Defects and How to Avoid Them
Most sublimation problems show up in the first sample, and most can be traced to artwork, fabric or press settings. This guide lists the defects buyers meet most often on team wear, what causes each one, and what to check before you approve bulk production.
- Sublimation turns dye into gas and fixes it inside polyester fibers, so fabric content and press settings decide the result.
- White gaps at seams, ghosting and dull color are the defects most visible on a finished jersey.
- Dark colors next to white areas carry the most risk of dye migration.
- A sample, checked against the list below, catches almost all of these before bulk production.
Why Sublimation Defects Happen
In sublimation, dye is printed onto transfer paper, then pressed onto fabric with heat and pressure. The dye turns to gas and bonds with polyester fibers. Because the color sits inside the fiber instead of on top, the print does not crack or peel. The same process also leaves little room for error: if the paper moves, the heat is off, or the fabric is the wrong type, the dye ends up in the wrong place or the wrong shade. For a full walk-through of the process, read how sublimation printing works.
Designs with large gradients, all-over patterns and dark panels, such as the white jersey with a blue gradient fade in ART# MI-2003 or the navy jersey with a yellow splatter pattern in ART# MI-2005, are the kind of artwork where defects are easiest to see. A flat single-color shirt hides most of them.
The Defects Buyers See Most
This table covers general causes in the industry. Your supplier can tell you which apply to a specific order.
| Defect | What you see | Usual cause | How to avoid it |
|---|---|---|---|
| Ghosting | A faint double image or blurred edges on lettering and logos | Transfer paper shifted during or after pressing | Secure the paper with heat-resistant tape and lift it cleanly after pressing |
| Dull or shifted color | Colors look flatter or different from the approved proof | Wrong color profile, low heat or time, or too much cotton in the fabric | Approve a physical color sample, not a screen proof, and confirm the fabric is mostly polyester |
| White gaps at seams | Thin white lines where panels meet or where the fabric stretches | Artwork stops at the cut line, or the seam pulls the fabric apart | Extend artwork past the cut line (bleed) and check seams with the garment stretched |
| Dye migration | Dark dye tints nearby white or light areas, often after heat or storage | Dyes in the base fabric or print moving into lighter zones | Keep dark and white areas apart in the design where possible and test light panels on the sample |
| Streaks or banding | Lines across a solid color area | Clogged printer nozzles or uneven ink laydown | Check solid color blocks closely on the sample |
| Press marks and shiny patches | Square outlines or glossy areas on the fabric | Too much pressure or heat, or no protective paper | Inspect the fabric surface in daylight, not only under shop lights |
| Panel mismatch | Patterns do not line up across sleeves, sides or back | Cutting did not follow the printed registration | Compare patterned panels side by side on the sample |
Prevent Defects in the Artwork
A lot of defects start in the file. Three habits help most:
- Add bleedExtend colors and patterns past the cut line so a small cutting shift does not leave bare fabric at the edge.
- Use clean, high-resolution filesVector logos and high-resolution images stay sharp at full size. Low-resolution images blur or show stepped edges. See the guide on vector vs raster artwork files.
- Brief colors preciselyGive a reference such as a Pantone code or a physical swatch. Screens show color differently, so the color matching brief is worth reading before you send artwork.
Fabric and Color Choices That Cause Trouble
Sublimation works best on polyester or fabrics with a high polyester content. Cotton and low-polyester blends take the dye poorly, so colors look faded and may wash out faster. If your design needs a cotton feel, embroidery or another method may suit it better; the comparison in sublimation printing vs embroidery helps you decide.
Fabric color matters too. Sublimation dye is translucent, so it shows on white or light polyester and does not cover dark fabric. That is why sublimated designs usually start on white base fabric. Very dark all-over colors and fine light details placed next to them are the combination most likely to bleed or look uneven.
After delivery, care affects how long the print looks right. The guide to caring for custom sportswear covers washing and storage.
What to Check on the Sample
Approve the sample against a short checklist instead of a general impression:
- Colors match your reference swatch in daylight.
- Logos, names and numbers have sharp edges with no double image.
- No white lines show at seams when the garment is stretched.
- Dark areas have not tinted nearby white or light panels.
- Solid color blocks are even, with no streaks or glossy patches.
- Patterns line up across front, back and sleeves.
The full approval process is covered in how to approve a sample before bulk apparel production. Minimum order, lead time and sample terms are confirmed in the quotation.
Common Buyer Mistakes
Approving from a screen
A screen proof cannot show seam gaps, ghosting or true color. Ask for a physical sample.
Ignoring fabric content
Asking for sublimation on a cotton-rich fabric leads to faded color.
Sending low-resolution logos
Small web images enlarge poorly and print soft.
Skipping the stretch test
A jersey looks fine on a table and shows white seams on a player.
Frequently asked questions
Can sublimation printing fade?
Because the dye sits inside polyester fibers, it does not peel like a surface print. Color can still look duller over time with harsh washing, high heat or a fabric with low polyester content, so follow the care guide for your garments.
Why are there white lines at the seams of my jersey?
Usually the artwork stopped at the cut line, or the stitching pulls the fabric so the undyed fibers show. Adding bleed to the artwork and checking the sample under stretch reduces it.
Can sublimation print on dark fabric?
Not well. The dye is translucent, so it needs white or light polyester. Dark base colors are normally produced by printing the color on a light fabric.
Does Maswiz Industries offer sublimation printing?
Yes. Maswiz Industries offers custom colors, logos and sublimation printing, with private label options, made in Sialkot, Pakistan. Send your artwork and quantities for a quotation.
Need sublimated team wear checked before you order?
Send your artwork, colors and sizes. Minimum order, lead time and sample terms are confirmed in the quotation.
