We have produced packaging color boxes for so many years, and found that the stability of the ink color of the packaging color box is very important, so how to ensure the stability of the ink color of the packaging color box? With the intelligentization of printing production, it is still not an easy task to ensure the stability of the ink color of each batch. If the ink color of the packaging color box produced is too different, it may seriously cause the company to lose customers. We have summed up a little bit of ink stability experience, let's take a look.
Before printing, it is necessary to do the pre-adjustment work. First, make preliminary adjustments according to the proofing, and then adjust the feeder, paper delivery, ink performance, pressure and other links in advance according to the printing process and the characteristics of the packaging color box to avoid rushing in the formal printing. Among them, it is most important to ensure the reliable, continuous and stable feeding of paper by Feida. Experienced operators first adjust the blowing, suction, presser foot, pressure spring, paper pressure wheel, side gauges, front gauges, etc. according to the format and thickness of the paper, and straighten out the movement coordination between the various parts. To ensure that the feeder feeds the paper smoothly, avoiding the unevenness of the ink color caused by the feeder stalling.
In addition, it is necessary to adjust the viscosity, fluidity, and dryness of the ink in advance according to the quality of the paper used in the packaging color box and the size of the image and text to improve its printability and ensure the normal printing. Shut down to clean the paper wool and ink on the blanket and printing plate, resulting in different ink shades. If you add various de-tackifiers and varnishes in the middle of printing, color deviation is certain.
In addition to pre-adjustment, the pressure of the water and ink rollers must be adjusted correctly to achieve a balance of ink and water. The proofing draft is also corrected and arranged in color sequence.