At What Temperature Do Inks Cure?
The short answer is: when the entire ink film thickness reaches its specified cure/fusion temperature. That temperature is provided on your specific ink’s product bulletin. Keep in mind that thicker ink deposits (high density) take more time to reach their specified cure/fusion temperatures. Faster fusing or low cure inks will reach their fusion or cure temperatures more quickly than conventional inks.
"Cure" occurs when the entire plastisol ink film fuses and becomes a single solid entity. For an ink to fuse fully, the entire film thickness must reach its correct cure temperature. For Plastisol that is 320 degrees Fahrenheit.
What Happens If I Don’t Cure The Ink Properly?
Many things—none of them good! Typical problems that arise from improperly cured inks include: ink washing off the garments, cracking of the ink film, loss of color and bleeding of the garment color(s) into the ink film.