Extrusion & Post
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EEA extruded film has gel particles
Problem Phenomenon
Transparent gel particles of 0.1-0.5mm appearing on the EEA extruded film surface
Cause Analysis
High molecular weight components in EEA not fully melted during extrusion forming local high crystallization zones; extrusion temperature too low or insufficient mixing
Solution
1) Increase extrusion temperature by 5-10°C to ensure full melting; 2) Increase screw mixing section length; 3) Inspect raw material to ensure consistent grade; 4) Replace with a finer 120-mesh screen to intercept unmelted particles
Key Takeaway
Gel particles are caused by insufficient melting; increasing temperature and mixing is the key
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