While textured PTFE exists, most heat resistant non-stick sheets come with a smooth finish. The main purpose of PTFE is to use it as a non-stick, protective barrier between ink, vinyl, or other decorations like embroidery surfaces and the heating element of the heat press or iron.Teflon is divided into several basic types: PTFE, FEP, PFA, ETFE: 1. Teflon PTFE: PTFE (polytetrafluoroethylene) non-stick coating can be used continuously at 260°C, with a maximum operating temperature of 290-300°C, extremely low friction coefficient, good wear resistance and excellent chemical stability .