Processing Machinery
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PP Home Appliance Housing Application
Problem Phenomenon
[Problem Phenomenon] Home appliance parts need impact-resistant, heat-resistant, low-cost materials
Cause Analysis
PP is impact-resistant, heat-resistant (long-term 100°C), and low-cost, widely used for washing machine inner tubs, refrigerator parts, and small appliance housings; lighter and more chemical-resistant than ABS
Solution
Select general-purpose or impact PP for appliance parts; heat-resistant parts according to conditions; high-gloss grades for appearance parts; 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 appliance parts are light and chemical-resistant; the washing machine inner tub is classic; 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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