Frank Nissel co-founded PRODEX in 1956, and became a leader in building extruders and extrusion lines for the sheet extrusion field.

In 1967, Frank became President of Welex, Inc., a world power in extrusion equipment. His contributions have been directly responsible for innovations in the packaging, appliance, and medical markets in over 70 countries.

He built the first commercial co-extrusion line, developed vented extrusion, and invented Autoflex flat sheet and film die, with automatically controllable profile.

Frank holds patents in the US and 13 foreign countries, and has authored over 50 technical articles and papers.

He's a Fellow of the Society of Plastics Engineers, and founded their Extrusion PAG, the forerunner of the Extrusion Division. In 1992, the division honored him with their Distinguished Service Award. Three years later, Frank received the Society's International Award for Business Management.