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What is a paper machine?

Jul 14, 2019

What is a paper machine?


Paper machine is the general name of the whole set of equipment which makes the pulp form the paper sheet, including headbox, net part, press part, drying cadre, calender, paper reel machine and transmission part, and auxiliary systems such as steam, water, vacuum, lubrication and heat recovery.


A machine for making paper from pulp water suspension which meets the requirements of papermaking by dewatering and forming with filter screen, mechanical extrusion dewatering and drying. Paper machine includes three main parts, forming, pressing and drying, and equipped with necessary finishing, winding and transmission devices, as well as auxiliary systems such as pulp supply, pulp and white water circulation, vacuum, ventilation and exhaust, paper loss treatment and lubrication, automatic control, etc. The specifications of paper machines are often expressed by the width of the paper made, the width of the copper mesh and the optimum working speed. Modern large papermaking machines can make up to 11 m wide, work at speeds of more than 1000 m/min, produce hundreds of tons of paper per day, and the weight of the whole machine is more than 1000 tons, up to more than 100 meters. Small papermaking machines are widely used in the production of general developing countries and some special papers, with a width of 1-3 m and a working speed of tens of meters to 200 meters per minute.