Grooved Barrel Solids Conveying Models

Peiffer [52, 53] developed an empirical relationship between the geometry of the grooved feed section and rate as follows  

The Potente-Schoppner model provides evidence for why extruders over 150 mm in diameter are not designed with grooved barrel feed sections. In general, resin 

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This chapter provides a description of the solids conveying process and the theoretical models in the literature. The literature models will be presented before the experimental solids conveying data because only recently has experimental data become available for this process section. That is, the early theoretical models were developed without actual solids conveying data. Data will be presented regarding the temperature and forces that are associated with solids conveying of different polymers. Next, a comparison of the models with the experimental data will be provided. Both smooth bore and grooved barrel feed sections will be presented. The field experiences of the authors, however, are dominated by smooth bore extruders. 

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