Extrusion & Post
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Glass Fibre film poor printing adhesion
Problem Phenomenon
After Glass Fibre film printing, ink adhesion
Cause Analysis
Glass Fibre surface polarity has poor affinity with ink; corona treatment effect decays fast; ink system not matched with Glass Fibre
Solution
1) Print immediately within 24h after corona treatment; 2) use Glass Fibre dedicated ink; 3) raise 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 key
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