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