Material Analysis
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PVC Recycled Material Odor
Problem Phenomenon
Recycled PVC products had odor, failed indoor air testing, and were returned by the customer
Cause Analysis
Residual plasticizer, stabilizer decomposition products and contaminants in recycled PVC release VOC; materials from unknown recycling sources have higher odor risk; indoor applications have strict odor requirements
Solution
①Use virgin material or controlled-source recycled material for indoor applications; ②test recycled material for odor and VOC; ③strengthen post-treatment devolatilization process; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Key Takeaway
The odor of recycled PVC is a VOC problem; source control and devolatilization are application prerequisites; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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