The use of water-based inks for gravure printing is environmentally friendly, and more and more people are paying attention to it. Before using water-based inks for gravure printing, you should prepare for the printing plate, good drying equipment, and surface treatment! 1. Printing plate The printing plate adopts electronic engraving intaglio or laser engraving intaglio, the depth of the net hole is 15--25um, which is shallower than solvent ink intaglio. This is because the water ink is produced using tap water, and the boiling point of water is higher than that of the solvent. Therefore, the water ink is not volatile, and the shallow version can increase the printing speed and avoid the occurrence of water ripples. If you use solvent-based ink to print, the depth of the mesh of the printing plate is 35--40um, which is easy to produce water ripples; but when using ink printing, the depth of the mesh of the printing plate is more than 25um, there will also be water ripples, so choose the appropriate The printing plate is very important. The viscosity of the ink can be adjusted with water during use, and the viscosity of Tu-4 can be controlled to 15 ---- 25 seconds / 25 ℃. If the viscosity is too high, the transfer performance of the ink is poor, and it is easy to cause ills such as dirty plates and paste plates. 2. Good drying equipment The drying temperature should be determined according to the different substrates and the size of the printing area. Such as aluminum foil wine label printing, drying temperature is above 100 ℃; plastic film printing, drying temperature is preferably 50 ~ 60 ℃. The wind force should be stronger than the use of solvent-based ink, because hot air can make the water ink transfer to the substrate and dry quickly. 3. Surface treatment Except for aluminum foil, vacuum aluminized film, and paper, all plastic films need to be subjected to electric spark treatment before ink-jet printing, so that the surface tension reaches 0.04N / m or more. Ink produced with water as the main solvent, due to the surface tension of water being around 0.072N / m, it can be seen that the gap between the surface tension of the ink and the surface tension of the film is large, which will affect the adhesion of the ink on the substrate and improve the plastic film Surface tension can improve the adhesion of printed patterns on the film.
Height adjustable desk helps create a healthier work environment by allowing you to move throughout your day. Switching between sitting and standing throughout a long workday provides several health benefits for the body, such as increased blood flow and enhanced posture. Standing throughout the day also keeps the mind alert and productive while you work.
Fast lifting, lifting speed up to 35mm / s, from the initial height to the upper limit, only 20 seconds. Uniform and stable, cup water balance, double motor balanced drive, lifting the whole table without shaking. The rising and falling sound is less than 45 dB, which is lower than that of keyboard typing.
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