Extrusion & Post
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HDPE extrusion head pressure fluctuation
Fenómeno del problema
The head pressure gauge needle fluctuates, and product dimensions fluctuate accordingly.
Análisis de la causa
Unstable feeding, screw wear, screen blockage, or temperature fluctuation cause melt pressure pulsation.
Solución
①Check feeding and hopper cooling; ②measure the screw gap; ③replace the screen; ④stabilize temperature control.
Conclusión clave
Tracing pressure fluctuation: material, screw, screen, temperature.
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