Extrusion & Post
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High film breakage rate of PLA biaxially stretched film
Problem Phenomenon
Biaxially stretched PLA film breaks frequently.
Cause Analysis
PLA has limited extensibility, and excessive stretching exceeds the limit.
Solution
Control draw ratio (longitudinal 2-3, transverse 2-3); optimize stretching temperature.
Key Takeaway
PLA biaxial stretching film breakage rate is higher than traditional polyester.
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