Notes on Printing Degradable Milk Tea Bags

2, before printing to adjust the printing viscosity according to the depth of the plate after the printing process to try not to add tap water, as long as the viscosity of the new ink can be added to the same. This is because the ink in the printing process, at a temperature of 32 ℃ for an hour, who volatilized as long as 1.2% viscosity change is small, so the ink to keep the print colour consistent, and thus improve the print pass rate.