Influence of Using Fluoropolymer Based Processing Additives to Improve the Extrusion of High Viscosity LLDPE Resins Through..., 1998 Polymers, Laminations & Coatings Conference Proceedings
The influence of using the fluoropolymer based polymer processing additive (PPA) DYNAMAR TM FX-5920A to improve the extrusion of high viscosity linear low density polyethylene (LLDPE) resins in a blown film extrusion process has been investigated. Three resins with melt index (MI) values of 2.0,0.9, and 0.5 were evaluated in a 0.8 mm (32 mil) and a 1.6 mm (63 mil) die gap configuration, and the 0.5 MI and 0.9 MI resins were also evaluated with PPA present. Several extrusion process parameters were used to assess the effect the PPA had on the extrusion process. These include die adapter pressure, material output, and extruder energy requirements. The physical, mechanical, and optical properties, and also the balance between the machine direction and transverse direction properties were used to assess the effects of resin MI and die configuration.
Influence of Using Fluoropolymer Based Processing Additives to Improve the Extrusion of High Viscosi