The forming section is composed of headbox, chest roll, forming fabric, vacuum suction box and couch roll. The headbox distributor sprays the slurry from the conveying system evenly to the forming fabric, and the slurry speed should match the wire speed.
The formed wet paper is further dehydrated by means of pressure. It consists of two hard and soft rollers, such as stone roller and rubber roller. The press section is composed of pressing groups of the same or different forms, in which the vacuum suction device is also included in the habit. When pressing, the appropriate specification of press felt is used to support the paper sheet, which can evenly distribute the pressure and take away part of the water from the press, and can enhance the pressure and improve the dehydration ability of the press.
A group of dryers is driven by gears or dryer screen, and a dryer section is composed of several groups of dryers. The linear speed of each group of dryer can be adjusted separately to maintain the micro speed difference between each group of dryer to compensate the shrinkage of paper in the drying process. The dryness of the paper out of the drying section is generally about 92-94%.
In the paper machine after the mechanical calender calendering, so that the paper surface is flat and consistent. The mechanical calender is made of a number of cold cast iron rollers. The paper surface is flattened by the weight of each roller or by additional pressure.
All parts of the paper machine are connected and run synchronously to form a mechanical and electrical integration. It is composed of mechanical decelerating device, speed regulating and stabilizing device, partial transmission device, etc., all of which use electric power as the power source.
doctor blade,press felt,forming fabric,dryer screen,etc.