Do you know the optimal moisture content of your cardboard?

October 18, 2024

Do you know the optimal moisture content of your Cardboard ?

It is well known that the moisture content of cardboard has a significant impact on the strength of cardboard.

The moisture content of cardboard refers to the weight of moisture contained in the cardboard as a percentage of the total weight of the cardboard. The moisture content of cardboard will affect the physical properties of cardboard, and thus the strength of cardboard.

If the moisture content of the cardboard is too high, the cardboard will become soft, have poor stiffness, and the compressive strength and bursting strength will also be reduced. This is because moisture softens the fibers in the cardboard and reduces the bond between the fibers, making the cardboard more susceptible to deformation and cracking.

On the contrary, if the moisture content of the cardboard is too low, the cardboard will become too brittle and prone to cracking, and the compressive strength and bursting resistance will also be affected. This is because too little moisture can cause the fibers in the cardboard to become dry, brittle, and lack flexibility, making the cardboard more susceptible to breakage.

Therefore, in order to ensure that the cardboard has sufficient strength, the moisture content of the cardboard needs to be controlled within an appropriate range. Generally speaking, the moisture content of cardboard should be determined according to the specific use requirements and production process, usually between 10% and 12%.

Managers in charge of Corrugator line production know that the problem of high moisture content of cardboard is easy to solve. We can solve the problem of high moisture content of Kraft paper by adjusting the glue and controlling the temperature of the preheating Roller .

However, the most troublesome thing for production managers is the following problems caused by the low moisture content of the produced cardboard.

1.Cardboard cracking

2.Cardboard burst line

3.Cardboard warping

With these thorny problems, a new spray humidification system came into being. This spray system made the production manager very happy. The system improved the quality of the cardboard and also significantly reduced the rate of cardboard waste.

Installing the spray humidification system at different locations in the Corrugator production line has different effects

Place A: Spraying Corrugated paper at the Single Facer Machine.

Effect: Replenish the moisture of tile paper, increase the flexibilityof corrugated paper,and prevent corrugated paper Due to dry caused by the broken, poor adhesion phenomenon.