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Paper has become our lives an indispensable part in study and work, then the paper is how to make out? Paper machine is to comply with the requirements of paper pulp aqueous suspension through the filter dewatering forming, mechanical dewatering and drying processes such as extrusion and copy machine made paper. Papermaking machines including the completion of the above process of forming, pressing, drying three main parts, and is equipped with the necessary finishing, winding and gear, as well as for pulp, pulp and white water circulation, vacuum, ventilation, damage paper processing and lubrication, automation and other auxiliary systems. If endless forming wire placed on a circular cage, become the working section forming an arc of dehydration, known as rotary screen. If using drilled perforations steel mesh drum, vacuum suction from the shaft in order to accelerate the forming wire mesh pulp dewatering surface is called a vacuum rotary or vacuum forming network. If the pulp is clamped in two long net with under two networks simultaneously subjected to dehydration molding is called formers (Figure 2). The former uses a different form of dewatering device, make online pulp accelerate dehydration. Element divided into static, rotating and both, and other three categories. A stationary member such as dehydration board, vacuum arc boxes, rotating elements such as the case of the roller, vacuum forming roll. In addition to forming a single form composed long net paper machine, rotary machine, tarpaulin machine, there are long network with multiple rotary screen, multi-clip shaped portion of the net and various forms of long-shaped rotary hybrid combination of .