Material Analysis
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POE shrinkage unstable
Problem Phenomenon
POE product shrinkage fluctuates ±0.8%, exceeding ±0.2% requirement
Cause Analysis
Molecular weight differences between POE batches cause shrinkage variation; processing temperature fluctuation affects crystallinity and thus shrinkage
Solution
1) Strictly control raw material batch consistency; 2) Processing temperature stable ±2°C to ensure consistent crystallinity; 3) Mold shrinkage compensation reserves adjustment space
Key Takeaway
Shrinkage instability is caused by batch differences and temperature fluctuation; raw material and temperature control are key
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