Corrugated paper printing ink characteristics

Corrugated paper printing ink characteristics

Water-based inks are roughly divided into two categories:

a Rosin - Maleic acid modified resin series (low grade)
b acrylic resin series (high grade)

Two pairs of water-based ink performance requirements 1 long-term storage of sediment, after stirring, it should be easy to redisperse;
2 to have good flow properties and viscosity;
3 has good storage stability;
4 Drying performance is fast and appropriate;
5 can not have any adverse effects on printing plates and printing presses;
6 can not have too much pungent odor.

Three water-based ink technical parameters:
1 Color: Approximate to the standard sample Note: The manual color development wheel is used to develop the color contrast of the sample and the standard sample without closeness. 2 Fineness: Less than 20 μm Instrument: 0-50 μm Scraper fineness meter.
3 Viscosity: 20 seconds ± 5 seconds Instrument: RIGOSHA4# cup (25°C).
4 pH: 8.0-9.
5 Instruments: portable pH meter (PHB-2 type).. Heavy metal content: in line with the world's packaging green environmental protection standards.
6 Compliance with requirements

The correct use of four water-based inks:
1 It should be fully agitated before use to keep the ink composition uniform;
2 After opening and use, the ink should be stamped and sealed immediately to prevent dust from falling and crusting.
3 If more than one ink contains impurities, it should be filtered first and used together with new ink.
4 Please avoid close to high temperature or sun exposure during storage.
5 If it is found that the viscosity of the applied ink is slightly larger, an appropriate amount of water can be added for adjustment.

Reprinted from: Chen Yi