| In the extrusion process, the extrusion pressure reaches maximum limit |
The PP in the adapter, filter or nozzle is not melted yet |
Check the temperature profile of the cylinder and choose a larger warm-up time |
| The regulation of pressure doesn't work constantly |
Check performing of the regulation of pressure
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The difference in pressures before and after the filter is above the threshold value |
The PP is too cold |
Increase the extrusion temperature and the filter temperature |
| The melt mass that leaves the nozzle, it is not homogeneous |
The fabric of the filter is perforated |
Change the filter |
| Low adjusted temperature |
Increase extrusion temperature, as suitable, until the mass stays homogeneous |
| Fluctuations in pressure |
inconstant granulated feeding |
Check in the mixer and in the introduction if there is bridge formation of granulated |
| Mistaken temperature program |
Variations of the temperature in diverse areas of the extruder in steps of 10 iC |
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activation is not stable
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Confirmation of the electronics of activator |
| The cutting and granulated mixture it is not homogeneous |
Confirmation of the operation of the regulation of pressure |
| The regulation of pressure doesn't work constantly |
Variation of the temperature of the areas I and II of the extruder |
| The feeding of the PP in the extruder is not constant |
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