Injection Molding
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Unstable EEA injection molded product weight
Problem Phenomenon
EEA injection molded product weight fluctuates ±3% exceeding the ±1% accuracy requirement
Cause Analysis
Unstable injection amount, inconsistent screw back position; holding time fluctuation; unstable feeding amount; EEA density change ±2%
Solution
1) Displacement sensor to precisely control screw back position; 2) Stabilize holding time and pressure; 3) Precisely set the V/P switchover point; 4) Inspect density difference of each batch
Key Takeaway
Product weight stability depends on injection amount accuracy and holding consistency
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