1. Printing suede varnish and metal varnish

Water-based suede printing varnish is a water-based glazing system that appears as a suede during the drying process after glaze coating. The strength of the suede effect is related to the amount of varnished varnish. If a ceramic anilox roller is used In the glazing system, the line number of the anilox roller is adjusted to achieve the purpose of changing the amount of oil, so as to enhance or weaken the suede effect.

The water-based metal varnish uses a water-based glazing system to present a metallic color on the surface after glaze coating. There are many colors, including silver, bright gold, bronze gold and other colors. The strength of the metal color is mainly The amount of light is related. The greater the coating amount, the stronger the metal effect.

2. Printing alcohol-free (ipa) fountain solution

In order to reduce the amount of alcohol used in printing production and improve printing quality, the use of alcohol-free fountain solution has become a trend. In response to this situation, a new alcohol-free fountain solution by varn has solved this problem.

(1) Addition amount of fountain solution: 3-5%;

(2) Addition amount of isopropyl alcohol: 0-6%; it depends on the addition amount of fountain solution and the water supply method of the printing machine, and does not need to be continuously added during the production process;

(3) When using alcohol-free fountain solution, it should be noted that due to the adaptability and operation habits of the fountain system to fountain solution, it is recommended to reduce alcohol first, and then run alcohol-free after a period of time.

When using alcohol-free fountain solution, please note that the original water roller of the printing machine contains hydrophilic substances. It is a water roller that can directly use alcohol-free fountain solution. However, if you replace the non-original water roller, it does not contain hydrophilic substances, which will affect To the use of alcohol-free fountain solution.

Three. Hybrid technology application

1. Printing water-based varnish hybrid technology

The water-based varnish hybrid technology refers to the technology that can display both high gloss and matte gloss on one printing.

The hardware requirements of this technology are relatively high, and the operation technology and application technology are relatively simple:

(1) The printing material must be high-gloss paper;

(2) The printing equipment must be 5+1 or above equipment;

(3) Use oily matte oil at the end of a color group to perform partial glazing through the ps version, and then use a high-gloss water-based varnish to perform a full-version glazing on the glazing color group. Note that oil-based matte oil and water-based high-gloss varnish are Special varnish, not ordinary varnish;

(4) Control the contrast effect of bright and matt by adjusting the coating amount of oily matte oil.

2.uv varnish hybrid technology

The uv varnish hybrid technology is a printing technique that can produce the following two effects using uv varnish in one printing: branches and highlight effects; matte and highlight effects.

(1) Printing uv varnish hybrid technology requires similar printing hardware as water-based varnish hybrid technology. It needs to be printed on high-gloss paper and requires more than 5+1 printing equipment. The operation is similar, but the drying method is UV curing Dry, higher hardware requirements;