Molding Process
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Excessive density of PLA foamed products
Problem Phenomenon
The density of PLA foamed products does not reach the lightweighting target.
Cause Analysis
The PLA melt strength is insufficient, the foaming gas easily escapes, and the expansion rate is low; the blowing agent does not match.
Solution
Use branched PLA or PLA chain extension to enhance the melt strength; optimize the blowing agent and process.
Key Takeaway
PLA foaming needs to solve the melt strength problem.
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