Injection Molding
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PLA '2079851475616104452 Cycle Management
Problem Phenomenon
Cooling time is shortened to increase output, and PLA products have insufficient crystallization and fluctuating performance
Cause Analysis
PLA crystallizes slowly, and insufficient cooling time causes insufficient crystallization; the modulus increases but strength and toughness fluctuate; the balance of cycle and crystallinity needs to be set according to product requirements; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based solely on experience
Solution
①Cooling time set according to crystallization requirements; ②Appropriately extend cooling for high-performance parts to promote crystallization; ③Use nucleating agents to shorten crystallization time and maintain the cycle; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Key Takeaway
The variable of PLA cycle management is crystallinity; nucleating agents are the reconciling means for maintaining both cycle and performance; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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