Overview
A very important component of any extruder is the plasticator with its screw and barrel. Figure 4.1 highlights the screw’s three processing sections (zones) of feed, transition (or compression), and metering. In extruding plastic, if the proper screw design is not used, products may not meet their performance and cost requirements. The hard steel shaft screw has helical flights which rotates within a barrel to mechanically process and advance the plastic. There are general purpose and dedicated screws used. Type of screw used is dependent on the plastic material to be processed [233, 262, 333, 392].
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© 1998 Springer Science+Business Media Dordrecht
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Rosato, D.V. (1998). Plasticizing screw process. In: Extruding Plastics. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-5793-7_4
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DOI: https://doi.org/10.1007/978-1-4615-5793-7_4
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