Explore ink suitability

There are a wide variety of inks in terms of material selection, formulation design, and range of use, as well as hue varieties. However, the specific problems of printing are similar and similar. In order to facilitate the normal use of ink, we are now responding to the questions raised by many companies in the near future.

How to deal with pits after printing?

In the printing on the aluminized film or on the white ink graphic color, often due to the cohesion force of the resin binder in the ink in the foam or ink system is too large, resulting in pinholes (blank points that pit) failure. General processing methods: First, increase the amount of ink coating; second, add a lighter agent to the ink; third, add a defoamer; fourth, add a thickening and thickening agent; fifth, gravure; Move a little bit; Sixth, add a stirrer in the ink fountain; Seven, reprint one time; Eight, replace the resin with a small cohesive force as the linking material of the ink; Nine is to use a good leveling, anti-static ink or slow down the printing speed, and strive to To eliminate the problem of pitting, pinholes, spots, and white spots.

What kind of resin is used as the binder for water-based high-temperature artificial leather printing ink?

According to the author's experience, it is domestic PDL-1 resin that can meet the technical requirements of the same ink in the United States (heat-resistant 150°C, water-resistant washing for 30 minutes), which is both soft and resistant to high temperature and water.

Can Varnish make printing ink?

As long as adding the colorant or coloring agent and then dispersing or grinding, the coating oil is exactly a type of printing ink.

How does the "ink multi-use" ink appear in the market?

The so-called "multiple uses of ink" is often because the product's batching system contains solvents that can dissolve polar substrates and dissolve non-polar substrates, plus the use of amphoteric resins as a binder for packaging printing ink systems. Introduced, it can achieve a variety of uses. After the author changed the solvent in the ink system to a mixture of DMF and MET, the ink produced can be referred to as a water-soluble ink, and can also be referred to as a non-toxic solvent ink, which can produce a rapid gravure printing or Flexible embossing inks can also be manually or mechanically screen printed inks, etc. after the addition of thickening aids. Both polar paper and non-polar plastics can be printed...even tap water, industrial ethanol or diesel can be used to adjust the ink viscosity and drying speed.

How much is the proportion of coloring material for printing gold and silver printing suitable?

In the packaging printing process, when the gold ink or silver ink is quickly formulated, the ratio of gold powder (silver powder) to ink is generally controlled at 17% to 25%. Of course, this is only a general concept. Specific to a certain colored gold or silver powder, but also depending on the size of its specific surface area to determine its share.

Reprinted from: Printed Today