Thermoforming
3 Aufrufe
PETG sheet storage deformation
Problembeschreibung
PETG sheets warp and deform during storage and cannot be directly thermoformed.
Ursachenanalyse
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.
Lösung
Lay the sheets flat with uniform pressure; warehouse temperature controlled at 20±5°C; online annealing of sheets after extrusion.
Wichtigste Erkenntnis
PETG sheet storage management is an important link in ensuring subsequent processing quality.
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