Pearlescent ink problems and handling

1. Pearlescent effect is poor or no pearl effect.
1) Check whether the outlets of the printing plate are clogged or the outlets need to be cleaned. The version of the outlet is too shallow to achieve the desired effect.
2) Check whether the viscosity of the pearl ink matches the vehicle speed.
3) Check if the blade angle is too large or the pressure is too high.
4) Check that the distance between the blade and the pressure roller is too long.
2. Stick back, bonding, adhesion.
1) The ink did not dry out. Increase the drying device, speed up the printing speed, use fast dry diluent.
2) The plate is too deep and the thickness of the plate is too thick.
3) The pressure is too large, the winding tension is too large or the curl length is too large.
4) The film is damp and the film should be dried before printing.
5) The corona treatment of the film is improper and cannot meet the processing requirements.
3. Pearlescent print uneven.
1) poor roller accuracy. The poor contact between the rubber roller and the serigraph roller, or the over-slipping of the roller caused print marks, resulting in uneven color unevenness.
2) The viscosity of the ink is too high. The viscosity of the ink is too high, it is difficult to apply evenly, and it is transferred to the surface of the plate, resulting in inhomogeneities after imprinting.
3) The pressure of the printing pressure roller is uneven. The pressure on both sides of the pressure roller should be adjusted to be consistent.
4) Electrostatic phenomenon. Elimination of static electricity should be done in time, and generally grounding should be used.
5) Check if the pearl powder precipitated. Should strengthen the stirring ability.
6) If you purchase pearl powder blending yourself. Pearl powder and diluting agents should be selected for mutual adaptation.
4. Has a pearlescent effect but is dull.
1) The diluent is too volatile and should be used with a slow-drying diluent.
2) Reduce oven temperature, or cool air.
3) Speed ​​up printing.
4) The ink is too thin. Increase the viscosity of the ink.
5. Paste version, block version.
1) The ink is too dry and the proper drying speed should be adjusted.
2) Impurities are mixed in and the surrounding environment is kept clean during printing.
3) Increase the speed of the printing press. Reduce dry time.
4) Reduce the distance between the cutter and the pressure roller.
6. The strength of the stripping force after the composite printing is poor 1) The use of the pearl ink is correctly selected, and the printing on the surface or the inside is determined.
2) Choose a suitable glue and thinner.
3) Control the amount of glue, temperature, tension, etc. during compounding.
4) Grasp the corona treatment of the film.
5) If the self-made pearl ink should choose the appropriate diluting agent and composite glue to adapt.