Impressions - March 2025 - 43

Though it can be a problem when working with
performance apparel, with the right techniques and tech,
scorching can be eliminated, even on tricky fabrics.
replacements. This approach in turn aligns perfectly with broader
efforts to create a more sustainable future, where quality and care
go hand in hand with environmental responsibility.
Best Practices for Preventing Scorching
Preventing scorching starts with understanding your materials
and the decoration method you're using. Certain fabrics, like
polyester and tri-blends, are more prone to scorching due to the
nature of the synthetic fibers they employ. Dark-colored polyester,
in particular, tends to show visible press marks. When working
with these materials, consider whether the decoration method
requires high heat and, if so, adjust your approach accordingly.
Choosing low-temperature transfers, such as direct-to-film
(DTF) or heat-transfer vinyl that applies below 300°F, can significantly
reduce the risk of scorching. These transfers are ideal for
heat-sensitive fabrics like performance wear, as they allow you to
maintain quality without compromising the garment's integrity.
Pressure settings are another common culprit. Scorching often
occurs when the pressure is set too high, especially when using
smaller platens where the pressure is concentrated over a smaller
surface area. Adjusting the pressure for the platen size can make
a significant difference. When in doubt, consult your heat press
manufacturer for guidance on fine-tuning your settings.
Testing represents another effective way of preventing scorching.
Always test your heat settings, including temperature, pressure
and dwell time, on a sample garment or inconspicuous area of
a garment you're planning on decorating before committing to
the entire job. Taking the time to test can save you from costly
mistakes and wasted materials.
Accessories for Preventing Scorching
The right tools and accessories can also play a big role in minimizing
scorching. Using silicone cover sheets or upper platen
protectors creates a barrier between the heat platen and the garment,
which helps prevent direct contact that can lead to press
marks or discoloration. Note, not all transfers are compatible with
these covers, so it's important to test how they affect application
time and adhesion.
Smaller platens can also be useful for isolating print areas. For
example, when applying a left chest logo to a performance polo,
using a 6-inch-by-6-inch platen guarantees only the necessary
area is exposed to heat, minimizing scorching on the rest of the
garment. Heated lower platens, which apply heat from the inside
out, are another valuable tool. These are especially helpful when
applying dimensional products, like patches or emblems that require
high heat and dwell time.
Temperature accuracy is equally important. Using a temperature
gun or test strips to check how hot your press is, ensures the actual
heat matches the settings, preventing scorching or misapplied
transfers.
Troubleshooting When Scorching Happens
Even with the best preparation, accidents happen. If you find
yourself with a scorched garment, though, don't panic-there are
ways to salvage it. Using a small handheld heat press or a household
iron on a smooth, flat surface at a low heat setting, for example, can
help feather the edges of a press box, creating a softer transition
and reducing the mark's visibility. This technique may not work
for every fabric or every level of scorch severity, but it can be a
lifesaver in many situations.
For light marks or discoloration, spritzing water over the press
box can also sometimes restore the garment's appearance. This is
especially the case with cotton T-shirts, where the press box may
be due to loss of moisture, not actual scorching.
While not foolproof, these methods offer a way to recover
garments that might otherwise be discarded.
Fortunately, advancements in heat printing technology are
March 2025
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