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The pretreatment process is mainly composed of grid, screen, fiber recovery system, water volume and water quality adjustment and other processes. Different pretreatment methods can be adopted according to different paper industry wastewater quality to remove part of the pollutants, improve the...
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After calendering, the paper fibers are no longer loosely arranged, but have a certain degree of tightness, but the smoothness of the surface still cannot meet the requirements of high-end fine printing. The surface uniformity of uncoated paper is poor, the ink color after printing is uneven,...
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In order to meet the needs of some special uses of paper, various types of non-fibrous additives are often mixed in pulp or paper. According to its purpose, it can be roughly divided into the following categories: 1.Wet strength agent. Wet strength agents are additives added to increase the wet...
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Pulp and Paper Engineering is one of the second-level disciplines under the first-level discipline of light industry technology and engineering. It is the production technology and process of paper and other light textile products processed by chemical, physical and mechanical methods based on a...
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The production capacity of a paper machine is expressed by the number of tons of paper produced per day. It can be calculated as follows: G ＇ =0.06VBgk1k2k3/1000 Where: G'—production capacity of paper machine (t/h) k1 — C apacity rate (%) k2 — Yield rate (%) k3 — Daily average production...
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Dryer is driven by gears or driven by wool cloth, several drying cylinders form a group, and several groups of drying cylinders constitute the drying section. The linear speed of each group of drying cylinders can be adjusted separately to maintain a slight speed difference between each group of...
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The forming section of paper machine is composed of head box, breast roll, forming wire, suction box and flat roll. The headbox spreader evenly sprays the slurry sent by the flow system to the forming wire, and the slurry speed should match the wire speed. Controlling the pulp speed and wire...
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Introduction to the types of paper machine industry
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How can we better reduce the maintenance cost of papermaking equipment?
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How does the toilet paper making equipment work?
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VAC dryers are generally vacuum cylinder.The main function of the VAC cylinder is to make the drying section change from original upper and lower felts to one felt. The two-layer dryer paper is in an open state when running between the two dryers, without any support. When it is wet, the...
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Old paper machines cannot meet the needs of modern paper production.Therefore, in order to improve paper machine, Zhenghua Machinery adopts the latest technical solutions, committed to upgrading of paper machine industry, and contributed to the improvement of paper machine production processes....
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