Paper-making process (8 steps)

The manufacturing process of paper is as follows:

1, wood peeling. There are many raw materials. Here, wood is used as raw material, with excellent quality. Put the wood used to make paper into the bucket and remove the bark.

Step 2 cut. Put the peeled wood into the chipper.

3. Boil the wood. Send the wood chips into the digester.

4. Then wash the pulp with plenty of clean water, and remove coarse chips, knots, stones and sand from the pulp through screening and purification;

5. According to the requirements of paper types, bleach the pulp to the required whiteness with bleaching agent, and then beat it with beating equipment.

Pulp is fed into a paper machine. In this step, some water will be removed from the pulp and become a wet pulp belt, in which the fibers will be gently pressed together by rollers.

6. Water extrusion. The pulp moves along the conveyor belt, and then the water is removed and becomes more compact.

7. ironing. A roller with a smooth surface can press the paper surface smoothly.

8, cutting. Put the paper into the machine and cut it into standard sizes.

Extended data

Principle of papermaking:

Papermaking production is divided into two basic processes: pulping and papermaking. Pulping is to dissociate plant fiber raw materials into natural pulp or bleached pulp by mechanical method, chemical method or a combination of the two. Papermaking is to combine pulp fibers suspended in water into sheets that meet various requirements through various processes.

reference data

Baidu encyclopedia-papermaking