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In wet mechanical papermaking, whether using traditional drum machines, single-web machines, or double-web machines, it is possible to use a very dilute pulp concentration of around 1%. After this pulp is spread across the papermaking mesh from the headbox, the mesh moves horizontally or at an inclined angle, causing the fibers to align in the direction of movement of the mesh. The principle is similar to that of water flowing rapidly: in the absence of other disturbances, floating logs naturally arrange themselves in the direction of the current, with little tendency to move diagonally or sideways in order to reduce resistance. Thus, within the dilute pulp on the papermaking mesh, the fibers arrange themselves in parallel due to the unidirectional flow caused by the forward movement of the mesh, before any loss of moisture occurs. This is what leads to the formation of the “fiber streams” seen in mechanical papermaking. The fiber flow in paper has a significant impact on various properties and characteristics of paper, such as tear resistance, curling, elongation, shrinkage, as well as aspects related to folding during processing, the stiffness of books, and their ease of opening. For example, in label paper, the fiber flow must be parallel to the height of the surface in order to ensure smooth operation of automatic packaging machines. However, the importance of paper fiber flow is rarely recognized, which is not a good thing from the perspective of printing engineering planning. Linjiang Xinghui Filter Aid Co., Ltd. is located in the Ma’anshan ore field in the Changbai Mountain region of Jilin Province, which is the largest diatomite deposit area in Asia. This ore field has proven industrial reserves of over 600 million tons, making it one of the most promising diatomite deposits in the world for development. The company mainly provides information on diatomite, food-grade diatomite, calcined diatomite, diatomite filter aids, diatomite manufacturers, and diatomite companies. To learn more about diatomite, please visit our official website at www.china-diatomite.com.cn.