Sublimation on Can Coolers: Guide & Pressing Tips

Sublimation on Can Coolers: Guide & Pressing Tips

Sublimation is a popular way to create permanent, full-color designs on TahoeBay can coolers. Both our foam and neoprene can coolers have a polyester fabric decorating surface, which allows sublimation dye to transfer into the fabric rather than sitting on top of it.

The primary difference is the insulating material underneath the polyester. Foam can coolers use a polyfoam core, while neoprene can coolers use a neoprene core. Both can be sublimated, although neoprene generally tolerates the longer high-temperature press cycles commonly used for sublimation more easily.

Important: There is no single universal sublimation setting that works for every printer, ink, paper, heat press, and blank.

Use the guidance below as a starting point, then test one can cooler before beginning a larger production run.

Sublimation at a Glance

Material Decorating Surface Core Material Best to Know
Foam Polyester fabric Polyfoam Works well for sublimation, but the polyfoam core is more sensitive to prolonged heat and heavy pressure.
Neoprene Polyester fabric Neoprene Generally more tolerant of longer high-temperature press cycles and often easier for sublimation beginners.

Before You Sublimate

Check Why It Matters
Use white or light-colored blanks Sublimation ink is transparent and does not print white. The color of the can cooler becomes part of the finished design.
Use sublimation ink and paper Regular printer ink and standard paper will not produce the same transfer process.
Lint-roll the polyester Small fibers or debris can become visible as colored specks after pressing, especially on white blanks.
Use clean protective paper Previously transferred sublimation ink can reactivate when heated and transfer onto another part of your project.
Test one blank first Heat presses, inks, papers, and printers vary enough that small setting adjustments are normal.

Sublimation Quick Start

Step What to Do Key Tip
1. Prepare artwork Set up your design and mirror it before printing when required by your sublimation workflow. For full coverage, make the background larger than the area being decorated.
2. Print Print using sublimation ink and compatible transfer paper. Use the print settings recommended for your printer, ink, and paper combination.
3. Clean the blank Lint-roll the polyester decorating surface carefully. Inspect white blanks under good lighting for stray fibers.
4. Protect the inside Place clean protective paper inside the can cooler. This helps prevent ink from transferring through to the opposite side.
5. Position & tape Place the printed side against the polyester fabric and secure the paper with heat-resistant tape. The transfer should not be able to slide when you move the blank into the press.
6. Press Use your tested time, temperature, and light pressure. Avoid unnecessarily compressing the insulating material.
7. Remove transfer Lift the paper away carefully after pressing. Avoid sliding the transfer across the hot fabric, which can contribute to ghosting.
8. Cool Allow the sleeve to cool. If decorating the second side, let the first side cool before pressing again.

Recommended Starting Settings

If you do not already have established settings for your equipment and sublimation supplies, use these as general starting points.

Material Temperature Time Pressure Adjustment Guidance
Foam Approx. 350°F Approx. 20–30 seconds Light Start toward the shorter end of the range. The polyfoam core is more sensitive to prolonged heat and pressure.
Neoprene Approx. 350°F Approx. 40–60 seconds Light Adjust the press gap for the thickness of the sleeve and fine-tune based on your test result.

These are starting points, not universal settings. A combination that works perfectly with one heat press, paper, ink, and printer may need to be adjusted when any of those variables change.

Foam vs. Neoprene for Sublimation

Foam Neoprene
Decorating surface Polyester fabric Polyester fabric
Insulating core Polyfoam Neoprene
Heat tolerance More sensitive to prolonged heat Generally more tolerant of longer sublimation cycles
Pressure Use light pressure to avoid excessive compression Use light pressure and adjust press gap for thickness
Best suited for Users who have a proven shorter-time sublimation process A good starting material for customers learning to sublimate can coolers

Full-Color and Edge-to-Edge Designs

If you want the design to reach the physical edges of the can cooler, print the artwork larger than the area being decorated. We recommend extending backgrounds and other full-coverage artwork approximately 1/4" beyond the edges of the blank.

This creates an oversize margin that gives you room for small positioning differences and helps prevent thin white areas from appearing along the edges.

Goal Recommended Approach
Background reaches the edges Extend the printed background beyond the physical edges of the can cooler instead of sizing the transfer exactly to the blank.
Prevent the transfer from shifting Secure the excess transfer paper with enough heat-resistant tape that the paper cannot rotate or slide when moved into the press.
Keep tape out of the decorated area Whenever possible, tape the excess paper to the back of the sleeve rather than placing tape between the printed transfer and polyester surface.
Avoid white slivers at the edge Make sure the printed portion of the transfer continues past every physical edge you want covered.
Protect important artwork Keep logos, text, faces, and other critical design elements slightly away from seams and extreme edges.

How to Tape an Edge-to-Edge Transfer

  1. Print the transfer larger than the can cooler, allowing the background to extend past every edge you want covered.
  2. Place the printed side of the transfer against the polyester surface.
  3. Center the can cooler within the oversized artwork.
  4. Do not stretch the can cooler to make it match the artwork.
  5. Allow the extra printed transfer area to extend beyond the edges of the sleeve.
  6. Secure the excess transfer paper with heat-resistant tape, preferably from the back whenever possible.
  7. Use enough tape that the transfer cannot shift when you pick up the sleeve or place it in the heat press.
  8. After pressing, lift the paper away rather than sliding it across the hot polyester surface.

Want the most complete edge-to-edge coverage?

The seam of an already-sewn can cooler creates a raised area that can make perfectly even pressure difficult right at the edge.

For standard-size projects where exact all-over coverage is important, consider using Unsewn Standard-Size Neoprene Can Coolers. They can be sublimated while completely flat and sewn after decorating.

Pressing Both Sides

Step Recommendation
After side one Allow the can cooler to cool before pressing the second side.
Protect the finished side Place clean protective paper over the completed design during the second press.
Replace used paper Do not reuse protective paper that has picked up sublimation ink.
Watch total heat exposure Remember that the blank is receiving heat again, which is especially important when working with foam.

Sublimation Troubleshooting

Use the appearance of the finished transfer to help identify what went wrong before changing your settings.

What You See Likely Cause What to Try
Blurry image, shadow, or double image The transfer moved while the sublimation dye was still reacting to heat. Secure the transfer more firmly with heat-resistant tape. Open and close the press smoothly, and lift the transfer away instead of sliding it across the hot fabric.
Image looks soft, hazy, or inconsistent in humid conditions Moisture may be trapped in the polyester fabric or transfer paper. Briefly pre-press the blank with light pressure to release moisture. Store sublimation paper in a dry environment. Remember that pre-pressing adds extra heat exposure, particularly with foam.
The entire image is faded or too light Insufficient transfer, incorrect supplies, inaccurate press temperature, or print-setting issues. Confirm you are using sublimation ink and paper. Check that the transfer is making full contact. If needed, test a small increase in time or temperature and verify the actual press temperature.
One area looks good but another area is faded Uneven contact or uneven heating across the heat press. Check for seams, folds, tape, or raised areas under the platen. Make sure the sleeve is flat and the press gap is appropriate. If the same area repeatedly transfers lighter, investigate the platen for a cold spot.
Tiny blue, red, black, or colored specks Lint, fibers, dust, or stray sublimation ink was present during pressing. Lint-roll immediately before pressing. Inspect white blanks closely, keep the workspace clean, use fresh protective paper, and check the press for stray ink.
Colors are sharp but look wrong The problem may be in the printer, artwork, ink, ICC profile, or color-management workflow rather than the heat press. Check the printer nozzle pattern, artwork colors, print settings, and recommended ICC profile. Also remember that sublimation ink is transparent and the blank color affects the final result.
The can cooler looks flattened or overly compressed Too much pressure, heat exposure, or press time. Reduce pressure and make sure the press gap accounts for the sleeve thickness. With foam, try reducing press time before increasing temperature.
The fabric looks unusually shiny Excessive heat or pressure may have altered the polyester surface. Reduce pressure and/or heat exposure. Test adjustments on a fresh blank rather than repeatedly pressing the same one.
White line or unprinted area along an edge The transfer was sized too closely to the blank, shifted, or did not make full contact near the seam. Extend the printed background past the physical edge, secure the oversized transfer carefully, and avoid placing tape between the artwork and polyester. For maximum coverage, use an unsewn blank.
Ink appears somewhere it wasn't printed Previously transferred sublimation ink was reheated and transferred again. Use clean protective paper inside, above, and below the project as needed. Discard paper after it picks up ink and check the platen for previous ink contamination.
Second side has unexpected marks from the first design The completed first side was exposed to heat against contaminated or unprotected material. Allow the first side to cool, cover it with fresh protective paper, and make sure no used sublimation paper is touching the completed design.
Repeated presses keep making the result worse The same blank is receiving cumulative heat exposure, making it difficult to tell which adjustment helped. Change only one variable at a time and use a fresh test blank whenever possible.

Protecting Against Unwanted Ink Transfer

Where Protection
Inside the can cooler Use clean protective paper to help prevent ink from transferring through to the opposite side.
Above and below the project Use disposable protective paper as needed to keep sublimation ink off the heat press.
During a second-side press Cover the completed first side with clean protective paper.
After ink transfers to paper Discard that sheet. Sublimation ink can reactivate when reheated.

Why We Don't Give One Universal Sublimation Setting

Sublimation depends on several pieces of equipment and material working together: your printer, ink, transfer paper, heat press, temperature, pressure, time, and the product being decorated.

Even two heat presses set to the same displayed temperature may perform differently in actual use.

For the most reliable process, use information in this order:

  1. Your established sublimation system and supply instructions
  2. TahoeBay product and preparation guidance
  3. Your own test press before beginning a larger batch

A Simple Production Tip

Once you've dialed in a successful sublimation process, document it before starting a larger run.

Record Why
TahoeBay product and color Different products and colors may behave slightly differently.
Printer, ink, and paper These affect color and transfer performance.
Temperature and time Makes successful settings repeatable.
Pressure or press gap Especially important when switching between foam and thicker neoprene blanks.
Heat press used Different presses can behave differently even at the same displayed settings.

Customer Demo Videos

You can also see TahoeBay can coolers being customized in our customer demo videos.

Watch Customer Demos

Back to Customization Guide