Whether it is manual or mechanical automatic paste color, the amount of glue should not be too large, some employees in the actual production in order to avoid degumming, artificial increase in the amount of glue, which is inadequate, must be strictly controlled. The amount of glue should be 80 ~ 110g/m 2 is better. However, depending on the size of the corrugated body, it is advisable to control the amount of rubber evenly to coat the peak. As long as it does not degumming, the smaller the glue stars, the better.
Quality of single-sided corrugated cardboard
The quality of a single-sided board is determined by the quality of the base paper, the corrugated type, the working temperature of the corrugating machine, the quality of the adhesive, the speed of the machine, and the skill level of the operator.
When the base paper with a reasonable and quality can meet the production needs, it is necessary to check whether the single-sided machine corrugated roller peak wear. The normal enamel type is UV type. After a long time of use, the peak of the corrugating roll becomes a semicircular due to factors such as the sand content of the paper or the hardness of the corrugating roll itself, and the single-sided cardboard produced by such a device is compressed. The intensity will be greatly reduced. Also, if the pressure roller is too large and the temperature of the machine is too high, the single-sided cardboard corrugation will be easily broken. When similar single-sided corrugated cardboard is applied to silicone, there are many plastics to eat, and its physical properties are changed, so it is difficult to ensure the compressive strength.
In the case of raw materials and equipment under normal circumstances, it is necessary to adjust the preheater area of the preheater by adjusting the strong water content of the paper. The temperature of the single-sided machine is controlled at about 200°C, and the pressure of the pressure roller is adjusted to about 0.3-0.4kga. The paper is not broken or cracked, and the liwa paper fits well). The speed of the vehicle is controlled at the medium speed of the equipment design speed is low, and the viscosity of the adhesive is adjusted to 30~35s. If the adhesive precipitated yellowish water has odor, it should be updated immediately. The operator must be skilled and highly responsible. With good professional ethics, we can flexibly adjust the pressure and speed of each roller according to the actual production conditions, so that we can guarantee the quality of single-sided corrugated cardboard.
Production environment
The temperature of the production environment should not exceed 33°C, and the humidity of the air should not exceed 45%. Otherwise, the cardboard can easily absorb moisture, and its moisture is not volatilized, which naturally reduces the bearing pressure of the carton. In addition, it is best to put a good box blank for 4 hours before molding. Due to the urgent needs of customers, fans can be forced to blow air to promote the adhesion of the cardboard as soon as possible and remove excess moisture.
In short, if we want to increase the pressure on color box color box, we must consider all-round and comprehensive analysis, and strive to reduce various unfavorable factors. We must not lose sight of this, otherwise all efforts will be in vain.
