How to solve the problem of wrinkling of printing paper

There are two main reasons, the first is improper adjustment, and the second is uneven paper. The work of the century can be judged according to the principle whether it is the cause or the paper. The main reason for the machine is that the paper feed of the printing machine is not adjusted properly. When Feida is separating paper, the two paper feeding suction nozzles are not synchronized, and the pressure of the paper pressing tongues on both sides is not equal, which is easy to cause paper feeding skew, paper feeding tape tightness and paper pressing wheel pressure. These are one of the reasons for paper wrinkling. In addition, the uneven gripping force of impression cylinder's paper grippers and the fact that the pads of the toothed plates are not in the same plane are also common causes of paper wrinkling. Mechanical reasons need to be repeatedly adjusted by experienced masters to solve. In addition, paper is mainly caused by uneven water content, which is the main reason for paper wrinkling. After the paper enters the printing workshop from the paper mill or warehouse, the environmental humidity between the two places is very different. The water content in the paper should be in balance with the humidity of the surrounding environment. The water content of paper will increase or decrease with the environmental humidity. Because paper has flounces and tight edges, it is bound to wrinkle when printed. In order to prevent and eliminate the deformation of paper, it is generally possible to hang the paper to dry, keep the temperature and humidity of the workshop and the paper drying room consistent in different seasons, and try to use cross-hair paper for printing to reduce wrinkles. When the paper loses moisture and the edge is tight, you can sprinkle some water around the paper pile and machine or spray it with a humidifier to humidify it.