Extrusion & Post
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Poor Printing Adhesion of CMC Film
Fenómeno del problema
After printing on CMC film, ink adhesion is
Análisis de la causa
CMC surface polarity has poor affinity with ink; corona treatment effect decays quickly; ink system does not match CMC
Solución
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
Conclusión clave
Poor printing adhesion is caused by insufficient surface polarity; corona treatment and special ink are the key
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