Processing Machinery
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PP Surface Hardness Scratch
Problem Phenomenon
【Problem Phenomenon】PP product surfaces are scratched and worn
Cause Analysis
PP surface hardness is low and easily scratched; obvious on high-gloss appearance parts; during on-site troubleshooting, verify item by item according to this mechanism to avoid blindly adjusting the machine based only on experience; this mechanism has been repeatedly verified by industry data and should be confirmed first during troubleshooting
Solution
Protection during transfer; surface coating; high-hardness grades or fillers; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability; change only one variable at a time and record parameter changes to facilitate locating effective measures
Key Takeaway
PP fears scratching, protective coating plus hard fillers; 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 problems in the future
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