Molding Process
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Influence of cooling rate on PETG transparency
Problem Phenomenon
The transparency of products differs significantly under different cooling rates.
Cause Analysis
The cooling rate affects the molecular chain packing density and free volume, and too fast cooling produces density unevenness.
Solution
Control the mold temperature to make the cooling rate uniform; anneal if necessary to homogenize the microstructure.
Key Takeaway
PETG transparency is sensitive to cooling conditions.
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