Processing Machinery
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PP Packaging Container Application
Problem Phenomenon
[Problem Phenomenon] Food packaging containers need heat-resistant microwaveable and transparent or low-cost materials
Cause Analysis
PP is heat-resistant (microwaveable), chemical-resistant, and food-contact compliant, widely used for meal boxes, yogurt cups, and bottle caps; random copolymer plus nucleating agent achieves transparency; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based on experience alone
Solution
Select heat-resistant PP for meal boxes; select random copolymer plus nucleating agent for transparency needs; food-grade compliant grades; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Key Takeaway
PP packaging is heat-resistant and microwaveable; transparency relies on random copolymer plus nucleation; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar future problems
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