Extrusion & Post
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Poor Printing Adhesion of CMC Film
Problem Phenomenon
After printing on CMC film, ink adhesion is
Cause Analysis
CMC surface polarity has poor affinity with ink; corona treatment effect decays quickly; ink system does not match CMC
Solution
1)Print immediately after corona treatment within 24h; 2)Use CMC-specific ink; 3)Increase corona power to 15-20kW/m² to ensure surface tension >42mN/m; 4)Flame treatment to assist surface polarization
Key Takeaway
Poor printing adhesion is caused by insufficient surface polarity; corona treatment and special ink are the key
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