(from http://www.cnzhixiang.com)
According to the principle of tension in the process of corrugated forming, when corrugated forming, the water content of the raw paper into the single-sided machine in 9% ~ 12% is the best.A little higher not, a little lower impact on the quality of the cardboard, how to take good this temperature?
We can control the temperature to adjust the water content of the paper.Let's make a concrete analysis on specific problems.
1, the base paper moisture content is too high when three temperature control methods
Method 1: after the temperature of the preheating roller reaches the requirement, the moving paper guide roller of the preheating roller can be adjusted appropriately to increase the preheating Angle of the raw paper and the preheating area.
Method 2: if the preheating area of the preheating roller is adjusted to the maximum and the water content of the paper is still too high, the solution should be to reduce the speed;
Method 3: if the conditions permit, the steam supply pressure of the boiler can be increased appropriately, so as to increase the temperature of the preheating roller and make it meet the preheating requirements.
2. There are two ways to control temperature when the water content of base paper is too low
Method 1: the moving paper guide roller should be adjusted accordingly to reduce the preheating area.At the same time, the use of preheating roller and single-sided machine spray device to spray the paper, increase the water content of the paper, so that it meets the standard requirements;
Method 2: increase the speed of the vehicle properly, so as to reduce the contact time between the paper and the preheating roller, and solve the problem of low water content to some extent.