Analysis of Pattern Failure Caused by Ink Factors in Printing Process

(1) The viscosity of the ink is too large, so that the layout produces a flower pattern. Ink viscosity is too large, in addition to making the printing difficult, but also will break the middle of the ink layer fracture conditions, so that the layout of the remaining ink layer is insufficient, due to the graphics part of the exposed wear caused by the flower version.

Approach:

Add a certain amount of release agent, reduce the viscosity of the ink, but do not let the ink flow increase too much.

(2) The viscosity of the ink is so small that the paste of the printing plate and the ink of low viscosity are easily emulsified, resulting in floating of the ink and the ink cannot be transferred normally, and the pigment particles are accumulated on the ink roller, printing plate, and blanket. When the pigment particles accumulate on the plate to a certain thickness, it will cause a paste plate, sometimes due to the lack of residual ink layer on the plate.

Treatment method: Add some No. 0 varnish ink properly.

(3) Insufficient ink fluidity causes the dots to expand and deform. Insufficient fluidity of the ink causes the printing plate to produce a flower plate. If the ink flowability is too large, the ink layer is easy to spread, the footprint geometry is enlarged, the dots cannot be correctly reproduced, and the ink flowability is insufficient. Often spread unevenly, resulting in lack of ink printing plate version.

Treatment method: According to the ink fluidity can choose different varnish.