Paper is made of the pulp through the processes of pulp blending, paper processing and paper making. To put it simply, paper is to be added with various auxiliary chemicals into the pulp, then purify and screen the latter again and finally be produced out by pressing dehydration, drying, and cutting. Therefore, pulping is the first step in paper making. Generally, there are three ways to convert raw material into pulp: mechanical pulping, chemical pulping and semi-chemical pulping. Pulp adjusting is another key point. The strength, color, printability and life of paper are directly related to it.
Common pulp adjusting process can be roughly divided into the following three steps: A. bulk; B. beating; C. adding glue and filling. The next step is the paper making process. The main work of the paper making department is to evenly interweave and dehydrate thin paper materials, and then carry out drying, calendering, rolling, cutting, selecting and packing processes. Therefore, common processes are as follows: A. screening of paper materials; B. net section; C. press section; D. calendar; E. roll paper; G. cutting, selecting and packing.