Extrusion & Post
8 views
Poor printing adhesion of PVA film
Problem Phenomenon
After printing on PVA film, ink adhesion
Cause Analysis
PVA surface polarity has poor affinity with ink; corona treatment effect decays quickly; ink system does not match PVA
Solution
1) Print immediately after corona treatment within 24h; 2) Use PVA-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 dedicated ink are the key
Was this helpful?
0 people found this helpful
Thank you for your feedback!