“…The result of the presented research is a simple power law model to predict the fibre diameter during melt spinning and melt blowing, taking into consideration viscosity, die diameter, take-up air pressure, material throughput, and respective machine setup. In comparison to the complex simulations available for this process, (see, e.g., [30][31]), this gives a simple and practical tool for a first estimation of the fibre diameter. were dried for 12 hours at 80 °C and PET for 48 hours at 160 °C in a vacuum chamber as the polar groups encourage water absorption, which would negatively impact the spinnability.…”