Paper manufacturing is a complex process composed of multiple processing steps. The raw materials for manufacturing paper are various fiber materials, such as virgin pulp, waste paper, wood, non wood (such as straw, wheat straw, sugarcane bagasse, bamboo, cotton stalks, etc.), phloem fibers (hemp, mulberry bark, goji bark, etc.), waste cotton (or cotton short fibers), and other fibers. These fiber raw materials first need to be chopped and steamed to make pulp. Due to the different composition and chemical composition of these fiber materials, there are different pulping processes. The pulp manufacturing process is the use of chemical or mechanical methods, as well as a combination of both, to dissociate the fibers in these fiber raw materials, and then purify or refine them into natural or bleached pulp.
The cylinder mold kraft/craft paper machine is the world's largest existing type of kraft/craft paper machine, with characteristics such as low investment, fast efficiency, stable quality, and easy maintenance. The regular models include 787,1092,1575,1760,1880,2100,2400,2640,2850,3500.
Fourdrinier paper machine consists of the wet part (including the headbox, formator, and pressing part) and the dry part (drying,
calendering, and coiling). According to the number of shapers and drying cylinders, they can be divided into single long mesh,
double long mesh, long mesh, multi cylinder, Yankee type and other models; According to the vehicle speed, it can be divided into
low-speed and high-speed. The paper machines that produce bulk products such as newsprint are mostly high-speed paper machines,with a large output, a speed exceeding 1200m/min, and a width of 10m. The regular models include787,1092,1575,1760,1880,2100,2400,2640,2850,3500.4200,5400,6100...