Energy monitoring and quality control of a single screw extruder

Analysis of process parameters related to the single-screw extrusion of recycled polypropylene blends by using design of experiments

“…The resulting change in rheological behaviour, however, is not expected to have a significant effect on the interpretation of the data related to screw speed, which is the only relevant related process variable. Table 1 outlines, in addition to composition ratio, other factors known to affect the optimisation of single screw extrusion operations [12][13][14][15] (screw speed; barrel temperature) and were varied as listed. The dependent responses to the selected independent factors include:…”

“…Abeykoon et al 11 proposed a non-linear model to predict the die melt temperature profile and demonstrated that substantially reducing melt temperature variations are possible. In subsequent studies, Deng et al 12 introduced new real-time energy monitoring methods to investigate how process settings affect energy efficiency and melt consistency. Developed from the initial studies reported by Kelly et al 13 , Vera-Sorroche et al 14,15 measured thermal homogeneity and energy efficiency in extrusion processes, which relate to extruder screw geometry, screw rotation speed and polymer rheological properties.…”

Single screw extrusion control: A comprehensive review and directions for improvements

“…Jing et al [66] proposed new real-time energy monitoring methods without the need to install power meters or to develop data-driven models. The effects of process settings on energy efficiency and melt quality were studied based on developed monitoring methods.…”

Análise paramétrica e validação experimental de um cabeçote de extrusão baseado em rosca, para impressão 3-D

“…A extrusão de polímeros, na qual um polímero é liquefeito e carreado até um molde ou matriz, forma a base da maioria das técnicas de processamento de polímeros (Deng, 2014 Sabendo-se a história, os tipos e os princípios básicos de funcionamento, com intuito de entender o projeto do cabeçote em estudo são expostos na próxima seção mais detalhadamente, os aspectos técnicos da extrusão.…”

“…No processo de extrusão, a pressão de extrusão pode ser controlada pela resposta rápida na velocidade de rotação da rosca. Em contrapartida, a resposta da mudança de temperatura é bem mais lenta (Deng et al, 2014).…”