The fermentation process of copy paper

Paper mills generally need to store raw materials sufficient for 46 months to allow the raw materials to undergo natural fermentation in storage to facilitate pulping and to ensure continuous production of the paper mill. After the material preparation section, the raw materials such as reed, wheat straw and wood are cut into pieces or wood pieces, and then the small pieces of raw materials are put into the digester and chemical liquid is added, and the raw materials are cooked with steam, and the raw materials are boiled into pulp or wood pieces are sent to ground wood It can be ground into pulp on the machine, or it can be ground into pulp after a certain degree of cooking. Then wash the pulp with a large amount of clean water, and remove the coarse flakes, knots, stones and sand in the pulp through screening and purification. According to the requirements of the paper type, bleach the pulp to the required whiteness with a bleaching agent, and then use the beating equipment for beating. Then add various auxiliary materials such as fillers, sizing agents, and sizing agents to improve the paper properties, and then purify and screen them again, and finally send them to the paper machine to filter water, press dehydration, dryer drying, and calender rolls. Take it and perform slitting, rewinding or cutting to produce roll paper and flat paper. If you want to produce coated printing paper, you need to dry the middle part or produce a roll of paper after coating processing.