Processing Machinery
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LLDPE and LDPE blending
Problem Phenomenon
Old equipment processing pure LLDPE has reduced output, blending LDPE improves it but performance is discounted
Cause Analysis
When processing LLDPE on low-power old equipment, high viscosity limits output; blending more than 15-20% LLDPE into LDPE also reduces output; 50% blend is an economical transitional solution
Solution
①Use LDPE/LLDPE blend as transition on old equipment; ②50% blend concentration is the balance point between equipment and performance; ③the long-term solution is equipment upgrade; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
Blending LDPE with LLDPE is the balancing art between equipment and performance; 50% concentration is the classic transitional formula; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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