Processing Machinery
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PETG screw design improper compression ratio
Problem Phenomenon
Poor plasticization or overheating occurs when processing PETG with a general-purpose screw.
Cause Analysis
Improper compression ratio: too small causes insufficient shear and poor plasticization, too large causes shear overheating degradation.
Solution
Select a dedicated screw suitable for PETG with a compression ratio of 2.0-2.5:1.
Key Takeaway
PETG processing requires a screw with a suitable compression ratio.
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