Paper Smoothness and Two Sides Difference

Paper smoothness is an important measure of paper quality, how to improve the smoothness of paper it and prevent two sides difference of paper? Leizhan engineer summed up the method in production hope can give you some support.

Paper Smoothness and Two Sides Difference

1. Pulp feeding system strength the mechanical pulp screening purification system, and increase in tail pulp or slag volume, reducing the large fiber bundles and small pieces of material.
2. Increase the amount of continuous discharge tailings of rotor blade or pressure screen to reduce the impurities that impact on smoothness.
3. Reduce the amount of coarse fiber bundles in the chemical pulp. The wire should improve the fiber intertwined, and strive to increase the retention rate of small fibers and fillers.
4. Application of vertical clamp forming, can significantly reduce the difference between the two sides.
5. The press section clean the felts with hot water to reduce the degree of contamination of small fibers.
6. Take the way to increase the line pressure to increase the tightness of the paper.
7. Ordinary press transformation for the composite press, can improve the smoothness, the difference between the two sides reduced.
8. Tighten the canvas on the dryer, so that the surface of the paper close to the surface of the dryer, can improve the smoothness of the opposite side, the difference between the two sides reduced; tight canvas can improve the front smoothness.
9. Add a steam nozzle before the calender, but also increase the moisture of the paper.

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