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| Unstable die head temperature | Check the heater function is normal |
| Check the thermocouple position is correct | |
| Die head throughput fluctuations | Adjust the die gap |
| Regular cleaning of die head, screw and hilter | |
| Non-uniform cooling air volume | Check air ring for dirt buildup or breakage |
| Adjust air ring position | |
| Check whether air pipe is damaged | |
| The air flow in the factory is too fast | Do not let outdoor air directly enter the factory |
| Extruder throughput instability | Cool down the hopper throat to avoid plastic blocking |
| Replace the strainer meshes of Filter to avoid blocking | |
| Matter of the formula |
| Blow-up ratio | Use a smaller die head to increase the blow-up ratio |
| Improper die design or scratches | Clear die impurities |
| Fix scratches on the die head | |
| Avoid seams by design | |
| Material cracking | Change the material |
| Turn down heating temperature | |
| Inappropriate raw material formula | Select raw materials with suitable Melt Index (MI) |
| Select compatible additives | |
| Uneven gels mix | Use screw with a greater L/D |
| Adjust the melt temperature | |
| Use multi-layer strainer meshes for filter, or reduce the die gap, to improve back pressure |
| Inappropriate ink | Choose the right ink |
| Improper use of additives | Reduce the amount of additives |
| Use the appropriate surface lubricant | |
| Insufficient corona treatment | Increase the treatment voltage or wattage |
| Reduce the take-up speed | |
| Narrow the gap of the electrode | |
| Raise the electrode treatment temperature | |
| Air humidity too high | Reduce the air humidity |
ARE YOU STILL NOT SURE WHICH TYPE OF DIE HEAD YOU WANT TO BUY?
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NO.1, Yongning Road, Feiyun New District, Ruian City, Zhejiang
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