Inadequate Nip Temperature & pressure
1. Set nip temp 45.C to 65*C depending upon type of substrate
2. Set appropriate nip pressure to avoid curling of laminate
Low adhesive deposit
1. Check gravure cylinder & re engrave if cells are choked
2. Check the application solids
Poor Surface Tension of Films
Olefinic film surface tension - min. 38 dynes/cm3
Solvent retention in the laminate
1. Check drying tunnel temperature
2. Check the Blower/Exhaust capacity
3. Ensure the line speed does not exceed the drying effeciency of the machine
Laminate is undercured
1. Use Urethane grade Solvent
2. MaintainpProper Adhesive and Hardner mixing ratio as per the recommendation
3. Check compatibility of the ink, coating and adhesive being used
For more information, please contact us.
