First, corrugating roller: pressure, wear, temperature must be controlled (1) Corrugated roller pressure is insufficient. In the production process, the pressure control of the corrugating roller is very important. The operator knows that over pressure can cause the corrugation to crack, but if it is too light, it will directly cause the corrugation height to be insufficient. In the process of corrugating, the corrugating roll heat and the corrugating roll and the pressure roll can be used to form the corrugating roll. If the pressure is insufficient, the corrugation is difficult to form, or the shape of the corrugated corrugation is not reflected in the corrugating, resulting in a low corrugation height.
(2) When the corrugating roller wears, it will cause the corrugation height to become lower. Now most of them are tungsten carbide corrugating rollers. When the tungsten carbide layer is worn, it will cause wear of the roller shaft. During high-speed production, the roller wear will be aggravated, and the corrugation height will be correspondingly worn away. This will directly lead to insufficient corrugation height. This time you can regrind the corrugating roller or choose to replace it directly.
(3) Insufficient temperature. Since the corrugation requires temperature during the molding process, the corrugation may not be formed well when the temperature is insufficient, and the corrugation may not be firm, resulting in insufficient pressure resistance.
Second, corrugated paper: excessive heating tile, water loss corrugated paper will also cause the height of defects, many people may not consider this. Overheating of the paper in the production process can cause water to flow through the paperboard. When paperboard moisture loss, the paper thickness will change relatively, especially the paper with high gram weight change more obvious. Therefore, the moisture content of the corrugated paper should be taken into consideration in the production process to ensure the normal production of the cardboard. In other words, if the moisture content of corrugated paper is too high or too low, the pressure resistance of the paperboard will be reduced.
The thickness of the cardboard will directly affect the pressure resistance of the empty carton and the edge pressure of the paperboard. Therefore, in the production process, it should be considered in many aspects and the most effective method to meet the needs of customers.
Third, the amount of glue: a large amount of glue, physical properties to reduce the phenomenon of degumming, the operator will increase the amount of glue, in fact, increase the amount of glue, it also means that the increase in water due to cardboard, due to moisture The increase also makes the physical properties of the cardboard drop.
Fourth, the speed and temperature must be controlled in order to improve efficiency, we tend to speed up the speed of cardboard production, but if the temperature is not enough, and your speed is high, this will cause glue gelatinization problems, at the same time As the speed of the vehicle increases, the evaporation of the moisture in the paperboard will also be reduced. As a result, the physical properties of the paperboard will be reduced. Therefore, the temperature and the speed must be controlled to ensure the normal production of the paperboard.
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