Processing Machinery
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Glass Fibre difficult purging
Problem Phenomenon
Glass Fibre purging needs 2-3h, time-consuming, affecting product changeover efficiency
Cause Analysis
Glass Fibre adhesion strong, forms firm adhesive layer on screw and barrel; Glass Fibre thermal stability poor, becomes sticky at high temperature, harder to remove
Solution
1) Before purging, flush with high-viscosity PE to carry away Glass Fibre residue; 2) reduce purging temperature below Glass Fibre softening point to reduce adhesion; 3) use dedicated purging compound
Key Takeaway
Difficult purging is caused by Glass Fibre strong adhesion; PE flushing and temperature reduction are key
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