How to use in gravure printing ink

1, plate USES electric engraving or laser version, version of the deep between 15 mu ~ 20 mu, this is because the ink is using tap water production, the boiling point of water is relatively high solvent.

Version of light can improve the printing speed, avoid water ripple, such as using the solvent ink printing on the plate 35 mu ~ 40 mu deep or above will generate water ripples, and use the ink printing on the plate more than 25 mu will have the phenomenon of water ripple.So, using good plate is very important.

2, good drying equipment, drying temperature should be according to the different substrates, the size of the printing area.

Such as metal foil label printing, drying temperature above 100 ¡æ;And plastic film printing and drying temperature 60 ¡æ, 80 ¡æ advisable.Wind power should be better than using solvent ink printing, because besides have a temperature, shall also have the strong wind, so that it can make the ink on the fitting to the substrates can rapid drying.

3, in addition to the metal aluminum foil, vacuum aluminum plating film, paper, all of the plastic film in the use of electric spark processing before the ink printing, plastic surface dyne to more than 40 ~ 42, with water as solvent in the production of ink.

Due to the water's surface tension is controlled in 72 dyne, so the tension of the ink and the film tension gap larger effect on adhesion, so as to improve the surface tension of plastic film, can make the design good adhesion after printing.

4, before printing ink in the ink tank, by plate idling for 2-3 minutes, to play the role of wetting plate and stirring;In the printing process, in order to observe the print needs to stop printing, can't stop plate rotation, plug plate performance shares can be avoided.

5, before printing according to the version of the depth adjustment after good printing viscosity, try not to join the tap water in the printing process, as long as to join the new ink viscosity consistent.

Because the ink in the printing process, in 32 ¡æ temperature for 1 hour, who the volatilization of only 1.2%, the viscosity changes little, so ink keep print color is consistent, improve the qualified rate of printed matter.

After 6, printing, to wash plate immediately, will ink into the ladle cover, put the water into the ink box, rotating plate cleaning cleaning detergent solution or 3%.