Processing Machinery
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PBAT blending with PPC
Problem Phenomenon
PBAT/PPC blending improves barrier properties but the processing window changes, causing process adaptation problems.
Cause Analysis
Difference between amorphous PPC and crystalline PBAT; compatibility is good but the processing temperature window changes; PPC thermal stability is poor; performance balance.; when troubleshooting on site, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solution
①Adapt processing temperature to PPC thermal stability; ②optimize blending ratio; ③re-determine the process window; ④performance test verification.; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
The barrier improvement of PBAT/PPC blending requires process adaptation; the temperature window is re-evaluated; performance balance is the goal.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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