Waterborne gravure ink is made of high-grade imported acrylic resin with appropriate functional additives and a variety of high-grade pigments (or not) by strict dispersion grinding process. This series of water-based ink is suitable for paper and film (PE, OPP) gravure surface printing with corona treatment (≥ 38DYn /cm), mainly used in food, daily necessities and other packaging after processing.
product Features
1. This product has bright color, good luster, good printing adaptability, not easy to dry version, fast drying, has considerable advantages in oil to water gravure printing.
2. The ink layer is fine, full on the spot, good leveling, clear dot, less loss of net, strong three-dimensional sense of pattern.
3. The drying speed can be adjusted, the viscosity is stable, and the construction is easy.
4. This product is environment-friendly ink, with a slight smell of ethanol in the printing process and no residual smell after printing.
5. Printing speed: paper 100~200m/min; Film: 60~150m/min.
Matters needing attention
1, printing plate using electric engraving or laser version, version depth between 15μ ~ 20μ, this is because ink is produced by tap water, whose boiling point is higher than the solvent. The shallow version can improve the printing speed, avoid the occurrence of water ripples, such as the use of solvent ink printing in the plate 35 ~ 40μ deep or more will produce water ripples, and the use of ink printing in the plate more than 25μ will also have water ripples, so it is very important to use a good plate.
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 ℃, and the plastic film printing and drying temperature at 60 ℃, 80 ℃ advisable, wind should be stronger than when using solvent ink printing, because besides have a temperature, shall also have the strong wind, In this way, the ink can be quickly dried on the substrate.
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, water background ink solvent production, due to the water's surface tension is controlled in 72 dyne, so the tension of the ink painting and film adhesion tension gap is larger, Thus improve the surface tension of plastic film, can make the printed pattern has good adhesion.
4. Before printing, the ink is poured into the ink tank, and the plate is idled for 2-3 minutes to wet the plate and stir it; In the printing process, in order to observe the printing needs to stop printing, can not let the printing plate stop rotating, to avoid the printing plate caused by blocking.
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, just need to join the new ink viscosity consistent, because the ink in the printing process, in 32 ℃ 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.
6. After printing, clean the plate immediately. Pour the ink into the bucket and cover it, put the water into the ink tank, rotate the plate for cleaning or adjust 3% detergent solution for cleaning.