Shape of the Extrusion Molding Screws
Table 15 and Fig. 15 show examples of the screw shapes of Nylon-MXD6 used for extrusion molding.
Table 15: Examples of Extrusion Molding Screws Shapes Used for Nylon-MXD6
| Category | Extruder(mmφ) | ||
|---|---|---|---|
| 30 | 40 | ||
| Type | Full-flight | Full-flight | |
| L/D | 24 | 26 | |
| Compression Ratio | 2.4 | 3.4 | |
| Pitch(mm) | 30 | 40 | |
| Feed Area (mm) |
360 | 520 | |
| No. of Flights | 12 | 13 | |
| Groove Depth (mm) |
5.4 | 7.0 | |
| Compression Area (mm) |
90 | 120 | |
| No. of Flights | 3 | 3 | |
| Measurement Area (mm) |
270 | 400 | |
| No. of Flights | 9 | 10 | |
| Groove Depth (mm) |
1.9 | 1.7 | |
Breaker plate: bore 2mm
Screen :60/100/60mesh
Fig. 15 Screw Shape
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