What are some key considerations for plastic extrusion dies? Whether you’re buying a new extrusion line or evaluating existing extrusion tooling, the first consideration is the flow path. For thermoplastics and fluoropolymers, you want a constantly converging flow path from the inlet port all the way to the end of the die. This will help you prevent dead spots where material can accumulate, as well as internal area expansion where material can expand. Since thermoplastics and fluoropolymers have elastic memory, any increase in internal volume will affect the dimensional stability at the exit of the extrusion dies. We ..........com could help you.