The films not pre treated
Insufficient bond. Either apply corona or primer. It is recommended to maintain surface tension in between 40mN/m to 44mN/m
Higher film weight of UV OPV
Control the film weight for better results
The curing is not suffeciently done
Consider checking curing of each colour & OPV
Poor wetting of UV OPV
Please change the UV OPV with new one
For more information, please contact us.