Material Drying
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TPE Bubbles
Problem Phenomenon
Bubbles appear inside or on the surface of products.
Cause Analysis
Material moisture, poor venting or excessive injection pressure; when TPE oil content is high, volatile components also form bubbles.; during on-site troubleshooting, verify item by item according to this mechanism, avoiding blind machine adjustment based solely on experience
Solution
①Strengthen raw '2079851475616104451; ②optimize mold venting; ③adopt multi-stage injection to reduce pressure; ④control the processing temperature.; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
For TPE bubbles, check the three lines of moisture, venting and volatiles; drying and venting are the main countermeasures.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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