In dye sublimation, a soft substrate does not require a coating but has specific requirements for absorbing sublimation ink under a heat press machine. (The substrate must be polyester or a blend of synthetic materials.) If the substrates are made of hard materials,you have to add a coating on them.Once coated, the substrate will absorb dye sublimation ink during a heating process,and the Epson SureColor F-series are specially for sublimation printing.
Test the product after the two coats of polyester liquid are dry. This is required. For example, imprint an image onto the finished substrate using a heat press with even, firm pressure. Or introduce the imprinted substrate into the environment it is intended for. If you are coating a "dishwasher safe" ceramic coffee mug, run the product through a dishwasher. If you are creating outdoor signs onto FRP, place a few samples of the finished product outside for several days.
Some items may require several coatings before an acceptable image will imprint. Experiment with heat press timing, temperature and pressure to achieve the best results.
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