Extrusion & Post
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CEF extrusion film has gel particles
Fenómeno do problema
Transparent gel particles of 0.1-0.5mm appear on the surface of the CEF extruded film
Análise das causas
The high-molecular-weight components in CEF are not fully melted during extrusion, forming local high-crystallization areas; the extrusion temperature is low or the mixing is insufficient
Solução
1) Increase the extrusion temperature by 5-10°C to ensure full melting; 2) Increase the length of the screw mixing section; 3) Inspect the raw materials to ensure consistent grades; 4) Replace with a finer screen 120 mesh to intercept unmelted particles
Conclusão principal
Gel particles are caused by insufficient melting; increasing the temperature and mixing are the key
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