Molding Process
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HDPE pipe sizing sleeve buildup
Fenómeno del problema
Material accumulates at the sizing sleeve inlet, and the pipe surface is scratched.
Análisis de la causa
Volatiles or low molecular substances in the melt condense and accumulate at the sizing sleeve inlet; high melt temperature aggravates volatilization.
Solución
①Regularly clean the sizing sleeve; ②appropriately lower the melt temperature; ③check raw material quality; ④polish the sizing sleeve inlet.
Conclusión clave
Sizing sleeve buildup = volatile condensation; lower the temperature and clean frequently.
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