Printing skills of water-based ink on corrugated paper

Printing skills of water-based ink on corrugated paper

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First, characteristics of a water-based ink for corrugated printing

Water-based inks are roughly divided into two categories: a rosin-maleic acid modified resin series (low grade) b acrylic resin series (high grade)

Second, the requirements for the performance of water-based inks

1. After long-term storage of the precipitate, it should be easily redispersed after stirring.

2. Have good flow properties and viscosity

3. Good Storage stability;

4. Drying performance should be fast and appropriate;

5. Can not have any adverse effects on the printing plate and printing press.

   6. Can't have too much pungent odor.

Third, water-based ink Technical parameters:

1 Color: Approximate to the standard pattern Note: Compare the sample and the standard sample without using the manual color wheel to compare the color

2. Fineness: less than 20 microns Instrument: 0-50 micron scraper fineness meter. 

3. Viscosity: 20 seconds ± 5 seconds .Instrument: RIGOSHA4# cup (25 ° C). 

4. pH: 8.0-9.

5. Instrument: Portable pH meter (PHB-2 type): Heavy metal content: in line with the world packaging green environmental standards. 

6. Tolerance meets the requirements

Fourth, the correct use of four water-based inks:

1. Before use, it should be fully stirred to keep the ink composition uniform;

2. After the use, the ink should be sealed and closed.Dust-proof drop and dry skin;

3. Residual ink should be filtered first, and then used with new ink;

4.  Storage period .Please avoid close to high temperature or hot sun.

5. If you find that the viscosity of the applied ink is slightly larger, you can add an appropriate amount of water for adjustment.