Barrier vs. Conventional Screw Design: A Field Performance Study, 1990 Polymers, Laminations & Coatings Conference Proceedings
This paper discusses the results of a study completed in the field to compare the performance of barrier and conventional extruder screw designs. The performance analysis is based on data obtained during production runs at normal operating conditions.
Performance, measured in terms of output rate, melt temperature, pressure stability, and energy efficiency was compared using a barrier screw and conventional screw in three separate case studies. The cases differ by extrusion process and by extruder size. Case one involves a sheet line with a 203.2 mm (8 inch) 32:l L/D extruder. Case two is a blown film line with a 203.2 mm (8 inch) 24:l L/D extruder. And finally, case three is a cast film line with a 114.3 mm (4.5 inch) 28:l L/D extruder. In each case the performance of the existing conventional screw was compared to a barrier screw design that replaced it.
Barrier vs. Conventional Screw Design: A Field Performance Study, 1990 Polymers, Laminations & Coati
