| ELASTRON EXTRUSION TROUBLESHOOTING GUIDE |
| Problem | Solution |
Flow Lines Along
(Extrusion direction) | Increase head/die temperature Increase screen pack Clean the screen and the die |
| | Increase barrel temperature Increase head/die temperature Use higher L/D extruder Increase compression ratio Increase haul off speed |
| | Decrease head/die temperature Decrease the capacity / throughput Use screw with longer feed / meeting section |
| | Decrease melt temperature Decrease head/die temperature Decrease screw speed Decrease compression ratio Purge and clean the machine |
| | Pre-dry pellets Decrease barrel temperature Use lower shear screw Apply vacuum vent Decrease the screw speed |
| | Increase head/die temperature Increase melt temperature Increase compression ratio |
| | Increase head/die temperature Increase melt temperature Increase screw speed Decrease compression ratio Pre-dry pellets Decrease screen pack |
Poor or no adhesion in co-extrusion | Use a suitable mould for co-extrusion Increase head/die temperature Increase melt temperature Increase die compression |