Processing Machinery
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PP EPP Foaming Application
Problem Phenomenon
【Problem Phenomenon】Cushioning packaging and automotive parts need lightweight, high energy-absorbing materials
Cause Analysis
EPP expanded polypropylene is lightweight, high energy-absorbing and recyclable, used in automotive bumper cores, cushioning packaging, and seats; it has better toughness than EPS and is recyclable; during on-site troubleshooting, verify item by item according to this mechanism to avoid blindly adjusting the machine based only on experience
Solution
Select EPP for cushioning and energy-absorbing parts; automotive parts according to energy absorption standards; take advantage of recycling; 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
EPP is lightweight, high energy-absorbing and recyclable, a new favorite for automotive cushioning; 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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