Blow Molding
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HDPE chemical drum
Fenómeno del problema
The chemical drum leaks after holding liquid, breaks in the drop test, and bulges during long-term storage
Análisis de la causa
Uneven '2079851475616104457 wall thickness makes some parts too thin; when ESCR is insufficient, the medium induces stress cracking; volatilization of the contents or temperature changes increase the internal pressure and cause bulging; when troubleshooting on site, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solución
①Parison program control optimizes the wall thickness distribution; ②select a high ESCR grade; ③breather valve or structural reinforcement to prevent bulging; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Conclusión clave
The HDPE chemical drum is a comprehensive test of '2079851475616104457 technology; wall thickness, ESCR and pressure management are equally emphasized on three lines; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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