Does anyone know the process of making paper?

Generally the production of printing paper is divided into two basic processes: pulping and papermaking. Pulping is the use of mechanical methods, chemical methods or a combination of both methods to dissociate plant fiber raw materials into natural pulp or bleached pulp. Paper is suspended in water pulp fibers, after a variety of processing combined into a variety of requirements of the paper.

Paper mills generally need to store enough raw materials for 4 to 6 months, so that the raw materials in storage through natural fermentation, in order to facilitate pulping, while ensuring continuous production of paper mills. By the preparation section of the reeds, wheatgrass and wood and other raw materials cut into material pieces (for the production of chemical pulp) or wood broken (for the production of grinding wood pulp), and then put the small pieces of raw materials into the cooker with chemical liquid, steam cooking, cooking the raw materials into pulp, or or wood broken to the wood grinder grinding pulp, but also after a certain degree of cooking and then grinding into pulp. Then the pulp is washed with a large amount of water, and the coarse flakes, knots, stones and sand in the pulp are removed through screening and purification. Then, according to the requirements of the paper type, the pulp is bleached to the required whiteness with bleaching agent, and then pulped with pulping equipment. Then add filler, glue, sizing agent and other auxiliary materials to improve paper properties in the pulp, and again for purification and screening, and finally sent to the paper machine through the net part of the water filtration, press dewatering, drying dryer, calendering rolls, and slitting rewinding or cutting production of rolls and flat board paper. If the production to produce coated printing paper, it is necessary to dry the middle or the production of rolls of paper after the coating process and realize.

6 In addition to the above basic process, but also includes a number of auxiliary processes, such as the preparation of cooking liquid, bleach preparation, rubber boiling and cooking waste liquid and exhaust gas in the chemicals and heat recovery.