On the stage of modern industry, the paper machine plays a vital role, it is like a magical magician, transforming raw materials into indispensable paper in daily life. The paper machine is a large and complex system of equipment. From the appearance, it is usually composed of multiple parts, occupying a large space. The main structure includes a flow box, a mesh part, a press part, a drying part and a paper rolling part.

Papermaking is one of the four great inventions of China. In the Western Han Dynasty, people already understood the basic method of making paper. In the Eastern Han Dynasty, the eunuch CAI Lun summed up the experience of his predecessors, improved the papermaking process, and used plant fibers such as bark, hemp heads, rags, and old fishing nets as raw materials to make paper. This kind of paper material is easy to find, cheap and easy to promote. Since then, the use of paper has become more and more common, and paper has gradually replaced silk and silk, becoming a widely used writing material for people, and facilitating the circulation of classics.