Molding Process
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Influence of cooling rate on PETG transparency
Fenómeno del problema
The transparency of products differs significantly under different cooling rates.
Análisis de la causa
The cooling rate affects the molecular chain packing density and free volume, and too fast cooling produces density unevenness.
Solución
Control the mold temperature to make the cooling rate uniform; anneal if necessary to homogenize the microstructure.
Conclusión clave
PETG transparency is sensitive to cooling conditions.
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