Many papermaking chemical additives are often used in the paper industry, and their varieties are wide and widely used, and their functions are mainly reflected in the following aspects:

01 Improve production efficiency

In order to improve the dewatering speed of the wet end of the paper machine and accelerate the evaporation of water in the cadre, filter aid can be added to improve the production efficiency. In order to make the pulp stain evenly and firmly, mordant and dispersant can be added. When sizing rosin, adding synergist can improve sizing effect. Moreover, recycled waste paper contains ink and other substances, and waste paper deinking agents can be added to produce pure pulp.

02 Improve the quality and give the paper special properties

For example, the cement bag paper needs high strength and good permeability, and the beating degree cannot be high when beating. In order to improve the strength of the paper, dry strength agents are often added. Napkins and paper towels need to be as soft as cotton, and wipes can not be ruffled, and paper softener will be added.

03 Reduce waste and save raw materials

For example, adding retention agents and flocculants to pulp can improve the retention rate of fillers and fine fibers, reduce losses, save raw materials, and reduce wastewater pollution.

04 Remove production barriers

During the summer, mud usually exists in mud tanks, mesh tanks, or white water pipe systems and rots, creating obstacles to production. Now there are a variety of high efficiency, low toxicity, self-decomposing preservatives, can kill bacteria and anti-corrosion, will not cause pollution.

If the pulp is not cleaned and mixed with air, it will produce foam and floating pulp, which is harmful to the quality and operation of the paper. In order to eliminate the harm of foam, defoamer and degassing agent can be used.

05 Improve production operation

The use of blanket cleaner can speed up the washing of the blanket and keep the blanket clean. Adhesives are often added to coatings to improve the quality of coated paper. The addition of dispersant can reduce the viscosity of the coating, promote the production operation and make the coating uniform. The addition of adhesive can improve the water resistance of the coating.