Plastisol ink is the most widely used ink in the garment printing industry. They are frequently used in screen printing (aka most printed shirts that you own or see). Plastisols consist of two primary ingredients - PVC resin (a white powder) and plasticizer (a thick, clear liquid). Plastisol ink will not dry, or cure, at standard temperatures. They must be exposed at a temperature between 300 - 330º F (143-166º C) to be properly dried and cured.