We do a lot of two-color jerseys using heat-applied film, but have trouble with the top color staying on after several launderings. How can we fix this?
Use a flexible application pad over the first layer. It presses a checkerboard pattern into the film and this gives the second layer a greater area to bond to.
Another technique is to simply press the first color down for a couple of seconds to get it flattened out and to tack down. It’s also important to increase the dwell time when pressing the foreground color to make sure the bottom layer reaches the melting point. I recommend heat pressing the background for two seconds and the second application for at least 10 seconds.
For more tips from Josh Ellsworth, check out his article on heat printing jerseys.