Extrusion & Post
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SMMA Printing Decoration
Problem Phenomenon
SMMA printing ink adhesion, surface treatment and matching.
Cause Analysis
SMMA printing decoration; surface energy; ink matching; corona treatment; adhesion durability; printing quality.; during on-site troubleshooting, verify item by item according to this mechanism, avoiding blind machine adjustment based solely on experience
Solution
①Surface treatment; ②ink matching; ③adhesion test; ④durability verification; ⑤quality monitoring.; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
Surface treatment for SMMA printing is the foundation; matching and testing are equally important; monitoring keeps quality.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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