With the improvement of the degree of sealing of paper machine white water, dissolved substances and colloids (DCS) in the white water also accumulate, which will not only lead to the increase of anionic interference substances, but also cause a large number of bacteria to multiply, which seriously affects the chemical production of pulp bleaching.

In view of the phenomenon of paper machine​ roller wear, the more traditional repair methods include surfacing, thermal spraying, electroplating, etc., but they all have the shortcomings of different parts.

Four methods of paper machine material technology1. Use the leftover materials from the printing plant, white paper edges, wood pulp, cotton pulp, and straw pulp to produce toilet paper, napkin paper, book paper, and student paper, which can be directly made into paper, with simple technology;

After unpacking and removing the iron wire, the waste paper is transported by the plate conveyor to the hydraulic pulper for disintegration. The hydraulic pulper performs beating and deinking of the waste paper, and the pulp after beating and deinking flows into the pulp pool.

Therefore, in the production of paper machines, a more reasonable matching of materials is needed to control all the white water to be circulated, and then the distance between the cage and the curved plate can be adjusted according to the quantitative thickness of the produced paper.

In the daily operation of the paper machine, due to the failure of the mechanical system, various reasons are caused, such as the voltage change of the power grid, the temperature change of the machine and the intrusion of pollutants.