Silicone oil is a colorless, odorless, non-toxic, stable liquid silicone polymer. In the papermaking process, silicone oil mainly plays the role of lubrication, dispersion, anti-sticking and defoaming. Specifically, silicone oil can make the pulp particles suspended in water smoother, reduce fiber breakage and wear, and improve paper strength and gloss. In addition, silicone oil can also prevent paper from getting stuck when winding, reduce paper loss, and improve production efficiency.

Silicone oil is a colorless, odorless, non-toxic and stable liquid silicone polymer. In the papermaking process, silicone oil mainly plays the role of lubrication, dispersion and anti-sticking. Specifically, silicone oil can make the pulp particles suspended in water smoother, reduce fiber breakage and wear, and improve paper strength and gloss. In addition, silicone oil can also prevent paper from getting stuck during winding, reduce paper loss and improve production efficiency.
Method of adding silicone oil
1. Selection of silicone oil
Silicone oil is usually used as a waterproofing agent, lubricant, moisturizer, etc., and the silicone oil used in papermaking should choose professional silicone oil for papermaking. This silicone oil has high purity and stability, and will not cause pollution and precipitation to the paper.
2. Determination of the amount of addition
The amount of silicone oil added should be determined according to the variety and quality requirements of the paper. Generally speaking, the amount of addition is between 0.1% and 0.5%. If the amount added is too little, the lubrication effect of the paper is not obvious; if the amount added is too much, the paper will be too slippery, affecting printing and writing.
3. Selection of adding time
The addition time of silicone oil should be carried out in the water tank before the paper machine screen. Silicone oil should be fully mixed with water in advance, then poured into the pulping machine and evenly mixed with the pulp in the mixing tank. The order of adding silicone oil should be the same as other chemical preparations.
4. Precautions
In the process of adding silicone oil, the following points should be noted:
(1) Silicone oil has a large density and viscosity, so it should be added slowly when poured into the paper machine.
(2) The injection of silicone oil should be measured, and the measuring tools and transportation facilities should be clean and rigorous to maintain the quality of silicone oil.
(3) After addition, the parking time of the pre-screen box should be appropriately extended.
[Conclusion]
The role and addition method of silicone oil in the papermaking process are relatively simple, but it is important to choose professional silicone oil for papermaking and the correct addition amount and addition time. Only by using silicone oil correctly can the production efficiency of paper be improved while improving the quality of paper.