Corrugated paper machine coated paperboard should pay attention to the problem

In general, people need to be careful when processing coated paperboard on a corrugating machine. Since the surface of the coated paperboard is subjected to a polishing treatment, it has a certain moisture resistance, that is, moisture permeability of the coated paperboard as compared with kraft paper. Performance is worse. Corrugated paper from the center to the local area strictly requires the use of coated paperboard. The quality of the paperboard will have an impact on the subsequent printing and processing of paper products. Rolling, corrugating, and grooving are all potential problems. Therefore, these problems should be emphasized in the production of corrugating machines, rather than waiting for and paying attention to when the printing and processing processes take a break. The following suggestions are made for this particular situation.
1. Starch raises the starch content of the coating machine to at least 29%, which will help to improve the problems that occur when binding and rolling. There is no need to change the formula if S/F is bonded, but if the temperature or process changes, the temperature of the gel needs to be adjusted.
Second, the single-sided reel material controls the preheating and deformation pretreatment of the single-sided reel material to the minimum level, so as to make the single-side reel material maintain the comparative height and moisture content as much as possible. The cardboard is pretreated with moist gas (above the drying gas). Correspondingly, the starch content is increased and the material channels are sufficiently cooled.
Third, gluing roller and preheater for iodine test can get information about the type of glue, and should regularly perform iodine test. Check the amount of glue applied by the gluing roller, and set an appropriate interval value (0.001-0.008 inch) to adjust the amount of glue applied. The larger the interval, the greater the amount of glue applied, and vice versa. The adhesive roller, the reel tension roller and the pressure roller must be equal. Adjust the rotation speed of the coating roller to find the "best point" for the strongest adhesion. After gluing off the contradiction device, the humidity of the paperboard should be controlled within 180 degrees and the temperature difference should be kept within ±5 degrees. Temperature control and tension control are all very important factors.
Fourth, the pressure roller conveyor belt and the hot sheet must ensure that the clean, clean, flat, heavier roller is also kept horizontal. The temperature at the beginning of entering the hot sheet is low, and heat is gradually increased later. The spray water system is beneficial to any reverse-shaped control. If the corrugator is equipped with a steam device, it can increase the moisture content of the roll material and increase its humidity, thus contributing to wind-up control. After leaving the hot plate, the bottom board temperature should be less than 200 degrees.
5. Segmentation, Crimping, and Cutting The sharp cutting knife, neatly aligned creases, and the proper spacing settings prevent powder breaks and breaks, and ensure segmentation, indentation, and cut-off quality.
6. Conclusion The facts prove that the above mentioned suggestions are very useful in the operation of many corrugated paper machines. However, different corrugating machines have their own characteristics and external conditions. In addition, mere adjustment on the one hand often does not solve the problem. Therefore, the operation must determine what is appropriate for the situation of your company. In order to optimize the performance of the corrugating machine, routine maintenance and training should be carried out to ensure that the corrugating machine maintains a good operating condition. This must be observed and imperative. ("China Packaging Network")