Thermoforming
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PETG sheet storage deformation
Fenómeno del problema
PETG sheets warp and deform during storage and cannot be directly thermoformed.
Análisis de la causa
Stacked storage causes uneven force on upper and lower layers, ambient temperature changes cause uneven thermal expansion and contraction, and the internal stress of the sheets is not fully released.
Solución
Lay the sheets flat with uniform pressure; warehouse temperature controlled at 20±5°C; online annealing of sheets after extrusion.
Conclusión clave
PETG sheet storage management is an important link in ensuring subsequent processing quality.
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