Thermoforming
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PETG sheet storage deformation
Problem Phenomenon
PETG sheets warp and deform during storage and cannot be directly thermoformed.
Cause Analysis
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.
Solution
Lay the sheets flat with uniform pressure; warehouse temperature controlled at 20±5°C; online annealing of sheets after extrusion.
Key Takeaway
PETG sheet storage management is an important link in ensuring subsequent processing quality.
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