Molding Process
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Insufficient heat seal strength of PLA film
Problem Phenomenon
The seal strength of PLA film after heat sealing is low.
Cause Analysis
The PLA heat sealing temperature window is narrow (between the start of melting and degradation) and the parameters are improper; the strength of the film itself is limited.
Solution
Precisely control the heat sealing temperature, time, and pressure; use a heat seal enhancing formulation.
Key Takeaway
The PLA heat sealing process window is narrow and needs precise control.
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