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What are the raw materials and production processes for industrial paper- Dongguan Renyi Industrial Paper Factory​

工业用纸What are the raw materials?

The first type of raw material papermaking is more complex and needs to be chopped first. High temperature steaming is carried out by adding high concentration alkaline water, and mechanical equipment such as CX screen, high-frequency vibrating screen, pulp washing machine, filter press, etc. are also required to remove the alkaline water in the raw material, and then bleaching is carried out.

After bleaching, clean and add water to prepare 0.02% slurry, and then paper can be made. The second type is simpler. Adjust the proportion of waste paper, industrial hydrogen peroxide, deinking agent, alkali, and water according to the corresponding proportion, and use a hydraulic paddle crusher to grind for the corresponding time; Finally, by using a skip sieve to remove the residue, paper can be made.

无论The basic principle of which method to use for papermaking is the same, which means crushing the fibers of the papermaking raw materials and then re fusing them at high temperatures.

The production process of papermaking consists of several key stages.

Pulping section: selection of raw materials → steaming and separation of fibers → cleaning → bleaching → cleaning and selection → extraction or pulping → storage and reservation

Paper making section: Disperse pulp → Remove residue → Refine pulp → Beat pulp → Prepare various additives → Mix paper materials → Flow of paper materials → Head box → Mesh section → Pressing section → Drying section → Surface gluing → Drying → Polishing → Unwinding into paper

Coating section: coating the base paper → coating with a coating machine → drying and drying → unwinding → rewinding → very calendering