Extrusion & Post
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EMA Extruded Film Has Gel Particles
Problem Phenomenon
0.1-0.5mm transparent gel particles appear on the surface of EMA extruded film
Cause Analysis
High-molecular-weight components in EMA are not fully melted during extrusion, forming local high-crystallinity zones; extrusion temperature low or mixing insufficient
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 are key
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