Abstract: Abstract Extruders are the most common machines in the plastics processing industry. Extruders are used not only in extrusion operations but also in molding operations, for example, injection molding and blow molding. Essentially every plastic part has gone through an extruder at one point or another; in many cases, more than once. In typical plastics extrusion processing, a viscous melt under pressure is forced through a shaping die in a continuous stream. The feedstock may enter the extrusion device in the molten state, but more commonly it consists of solid particles that must be subjected in the extruder to melting, mixing, and pressurization. This article discusses extruders and the extrusion process in detail, including screw design, dies, mixing, melting, conveying, and degassing. It also includes a comparison between different configurations and reports on their advantages and limitations.
Publication Year: 2017
Publication Date: 2017-11-15
Language: en
Type: other
Indexed In: ['crossref']
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Cited By Count: 4
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