Molding Process
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Insufficient CO₂ barrier of PLA carbonated beverage bottles
Problem Phenomenon
The CO₂ permeability of PLA bottles is high, and the gas loss of carbonated beverages is fast.
Cause Analysis
The barrier properties of PLA to CO₂ and O₂ are both inferior to PET, with high gas permeability.
Solution
Use PLA composite barrier layers; nano fillers increase the path tortuosity.
Key Takeaway
The barrier property of PLA is a technical obstacle to beverage bottle applications.
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