Six common ink failures in the printing process

Not ink

1. cause

In the printing process, the phenomenon that the printing plate is not inked sometimes occurs. The reasons for this phenomenon are the following five aspects.

1Insufficient ink viscosity, low flowability, too high yield value; 2 Insufficient solid content in the ink, which causes the ink to lack leveling property, the ink becomes “stuck”, and the ink becomes shorter; 3 The pigment in the ink re-aggregates And cause gelation; 4 ink into the water or ink sensitive to water, poor water resistance, so that the ink emulsification accelerated; 5 ink roll rubber surface or blanket hardened, wear plate.

2. Solution

1 For ink with short ink, add alkyd resin or other good fluidity material, re-adjust the ink property by three-roller, and wet the pigment with resin-type link material with good dissolving property, so as to evenly disperse the pigment. The re-aggregation; 3 using good fluidity, strong ink resistance. Black ink does not use rubber as much as possible to adjust the darkness, because the rubber content is more difficult to make the ink show better fluidity; 4 adjust the pressure of the rubber roller or replace the new rubber roller and blanket.