Extrusion & Post
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Internal stress streaks in PCTG transparent parts
Fenómeno del problema
Transparent products show colored stress streaks under polarized light.
Análisis de la causa
Uneven distribution of internal stress generated by flow and cooling during molding, insufficient annealing.
Solución
Increase mold temperature; full annealing; optimize gate position to improve flow.
Conclusión clave
PCTG internal stress streaks affect optical quality.
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