Processing Machinery
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LLDPE film heat seal initiation temperature
Fenómeno del problema
Heat sealing equipment needs higher temperature to seal, affecting efficiency.
Análisis de la causa
LLDPE's heat seal temperature window differs from LDPE; comonomer type affects the seal initiation temperature.; During on-site troubleshooting, verify item by item according to this mechanism, avoiding blindly adjusting the machine based only on experience.
Solución
①Set the heat seal temperature according to the resin data sheet; ②evaluate mLLDPE to lower the seal initiation temperature; ③optimize heat seal parameters; ④make a heat seal curve.; After adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability.
Conclusión clave
The heat seal window is determined by resin structure; mLLDPE can widen the window and lower the seal initiation temperature.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence.
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