Processing Machinery
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LLDPE film die head design matching
Problem Phenomenon
Continuing to use the LDPE die head for LLDPE production, problems occur frequently.
Cause Analysis
LLDPE needs a wider die gap and dedicated flow channel design; directly applying an LDPE die head causes excessive shear.; During on-site troubleshooting, verify item by item according to this mechanism, avoiding blindly adjusting the machine based only on experience.
Solution
①Evaluate die head modification to widen the gap; ②select an LLDPE-dedicated die head; ③optimize the flow channel to reduce dead spots; ④verify the modification effect.; After adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability.
Key Takeaway
Die head matching is the hardware premise for smooth LLDPE production; a dedicated die head is a worthwhile investment.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence.
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