Solid Blockage at the Entry of a Spiral Mixer

An extrusion thermoforming operation was used to make large parts. In order for the process to be profitable, the process must be able to produce consistent, high-quality parts that have high strength with minimum resin consumption. Thus, the thermoforming process must be supplied with sheet stock that has a consistent 

First-stage transition First-stage meter 7.62 11 3 2.5 and the compression rate was 0.0021 

Lead length, flight width, and flight clearance were 152.4, 15, and 0.15 mm, respectively, in all sections of the screw. A spiral dam with a clearance of 2.03 mm was in the last 3.5 diameters of the first-stage transition section. The first 2.5 diameters of the screw were inside a water-cooled feed casing. The specific rotational flow rate for the first-stage metering section was calculated at 12.2  

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