Thermoforming
8 visualizaciones
PETG thermoformed product folded corner whitening
Fenómeno del problema
Stress whitening appears at the folded corners or bent parts of PETG thermoformed products.
Análisis de la causa
Excessive bending stress at the folded corner and molecular chain orientation produce microcracks causing light scattering whitening, and the folded corner R angle is too small.
Solución
Increase the folded corner R angle to ≥2mm; increase the sheet heating temperature to make it softer; optimize the forming mold to avoid local excessive stretching.
Conclusión clave
PETG stress whitening is related to local excessive deformation; improving the design is fundamental.
¿Le ha resultado útil?
0 personas encontraron esto útil
¡Gracias por sus comentarios!