The Basic Extrusion Process
What are we trying to achieve? Densification, Mixing, Compounding, Reinforcement, Reactive Processing, or the production of a particular shape.
Feeding, Melting, and Pumping processes in single and twin screw machines, and the energy balance of the process.
Its influence on the extrusion process.
Aspects of design, choice and purchase of equipment.
Twin Screw Extrusion
Different types of twin screw, their uses and compounding optimisation
Various mixing techniques exist, add on mixing heads, barrier screws and modular kneading elements.
Sizing of a machine from laboratory trials, scale-up, and choice of equipment.
Compound, pipe, film, sheet, cable sheathing, profiles.
Fault finding, practical solutions to common problems, i.e. probable causes of surging, melt fracture, etc., difficulties encountered in handling rework
Materials, feeding systems,etc.
Practical demonstrations will be used to illustrate aspects of the course.