Extrusion & Post
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HDPE blown film thickness deviation
Fenómeno do problema
The transverse thickness deviation of HDPE film is large, and the strength is uneven after bag making.
Análise das causas
Uneven die lip gap, asymmetric air ring cooling, poor bubble centering.
Solução
①Adjust the die lip bolts; ②calibrate the air ring air volume distribution; ③adjust bubble centering; ④closed-loop thickness measurement.
Conclusão principal
Transverse thickness goes back to the die lip and air ring.
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