volume 34, issue 15, P1196-1201 1994
DOI: 10.1002/pen.760341505
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Abstract: A detailed study of the effect of several extrusion variables was made on the rheological and thermal properties of Delrin I1 acetal homopolymer and Zytel 42 polyamide 66 materials. A 63.5 mm Davis Standard extruder was used to measure the effect of screw design, screw rpm, die and head pressure, and melt temperature on the rheology of acetal and nylon 66 resins. A single stage metering screw was used to determine the effect of screw geometry and viscous heating on the melt viscosity breakdown and the rate of…

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