9 Things You Didn’t Know About Sublimation Paper

Here are 9 lesser-known facts about sublimation paper that might surprise even experienced users:

1. It's Not Actually "Printed On":

The design you print onto sublimation paper isn't meant to stay there. The paper acts solely as a temporary carrier for the ink, which turns into gas and permanently bonds with the polymer coating on your substrate under heat and pressure.

2. The "Sticky" Feeling is Intentional:

That slightly tacky or coated feel? It's a crucial release layer designed to hold the ink just enough during printing and handling, but then allow it to release completely onto the substrate during pressing. Too much or too little release causes problems.

3. Humidity is Its Arch-Nemesis:

Sublimation paper is highly hygroscopic (absorbs moisture). Even a few hours in humid air can cause it to curl, wrinkle, and lead to ink bleeding, ghosting, or poor color transfer. Always store it sealed with desiccant packs.

4. Weight Matters More Than You Think:

While 70-80 gsm is common, weights range from 60 gsm (lightweight, good for fine detail on fabrics) to 120 gsm (heavyweight, prevents bleed-through on dense substrates like mugs or dark fabrics with high ink coverage). Using the wrong weight can cause transfer issues.

5. Expiration Dates Are Real:

The special coating degrades over time. Using expired sublimation paper often results in faded colors, poor ink release (ghosting), or uneven transfer. Always check the packaging date and store properly.

6. Freezer Storage is a Pro Hack:

For long-term storage (months), many professionals tightly seal paper in its original bag with desiccants and store it in the freezer. The cold significantly slows moisture absorption and coating degradation. Just let it thaw completely sealed before use to prevent condensation.

7. It Can Be Used on Non-Textiles (Carefully):

While primarily for polyester fabrics and polymer-coated items, sublimation paper can transfer to other surfaces like uncoated wood or canvas for a distressed/vintage look. However, the image won't be permanent or washable as there's no polymer to bond with – it's more like a temporary heat transfer.

8. Printer Settings Are Non-Negotiable:

Using the wrong printer settings (especially "Plain Paper" or "Normal") prevents the printer from laying down enough ink. You must select the specific sublimation paper profile (or a heavy photo paper setting) provided by the paper manufacturer to ensure sufficient ink saturation.

9. The "Dull" Look Pre-Press is Normal:

Your printed design on sublimation paper will often look dull, matte, and slightly blurry compared to the final result. Don't panic! The vibrant colors and sharpness only emerge when the ink sublimates and bonds under heat.

Understanding these nuances can significantly improve your sublimation results, prevent costly mistakes, and help you get the most vibrant and durable transfers possible!