tissue paper printing processing

tissue paper printing processing   

Paper mills generally need to store enough raw materials for 46 months to make raw materials ferment naturally in storage, which is conducive to pulping and ensure the continuous production of paper mills. The raw materials such as reed, wheatgrass and wood are cut into pieces or wood pieces through the material preparation section, and then the small pieces of raw materials are put into the digester and added with chemical liquid, and then steamed. To boil raw materials to pulp, or to break wood to a mill to pulp, or after a certain degree of cooking and then to pulp. The pulp is then washed with plenty of water. Through screening and purification, the pulp in the rough piece, knot, stone and sand removed. The pulp is then bleached to the desired whiteness according to the requirements of the paper seed, and then the pulping equipment is used for pulping. Then in the paper pulp added to improve the performance of the paper filler, binder, sizing agent and other auxiliary materials, and again purification and screening. Finally, it is sent to the paper machine, which is filtered through the mesh part, pressed for dehydration, dried in the dryer, and pressed for winding, and then cut and rerolled or cut to produce web paper and flat paper. If the production to produce coated printing paper, it needs to dry into the production of web paper, and then coated processing to achieve.

In addition to the above basic processes, it also includes some auxiliary processes, such as the preparation of cooking liquid, the preparation of bleaching liquid, the boiling of rubber, and the recovery of chemicals and heat energy in cooking waste liquid and waste gas.How do you know if a tissue is really good?In fact, very simple, the first check whether its appearance is flat, fine, uniform light transmission.The second is to check the physical strength of the paper, indicating that the higher the tear, indicating that the higher the transparency of the paper, the higher the quality.Usually good tissue paper, for example, 17g/m2 tissue paper, usually covers up to 6-8 layers, extremely good up to 12 layers.