Corrugated box is one of the most widely used packaging products. In addition to protecting commodities, facilitating storage and transportation, it also plays a role in beautifying and promoting commodities.

However, the main components of corrugated boxes are cellulose, hemicellulose, lignin, etc., which means that it has strong hydrophilicity and high moisture absorption capacity.

In the rainy season, when the relative humidity in the air is too high, the produced corrugated boxes will feel very soft. The compressive strength of damp corrugated boxes will drop significantly. When the humidity is close to 100%, the corrugated boxes will even collapse.

We will usher in a continuous and humid rainy season from May to August, and the moisture (relative humidity) in the air will basically be higher than 65%. When the moisture in the air is higher than 65%, almost all the carton industries in the country are faced with cardboard. Soggy problem. So, how should we control the moisture of cardboard boxes?

 The improvement method to prevent the cardboard from getting wet

1. It is recommended to replace corrugated paper with high gram weight and high strength. The more layers of corrugated boxes, the better the moisture resistance. For example, 7-layer corrugated boxes have better moisture resistance and compression resistance than 5-layer and three-layer corrugated boxes. It can reduce or reduce the phenomenon of re-moisture and softening of corrugated cardboard or carton.

2. When stacking after production, it is recommended to use wooden or moisture-absorbing pads, which can replace cardboard or cartons to absorb some ground moisture, and the size is appropriate for cardboard cartons.

3. When stacking, it is recommended to use a surrounding hollow center for stacking, and the stacking height should not be too high. Keep the air circulation in the middle and dissipate heat in time.

4. If the moisture is too large, it is recommended to use an exhaust fan to extract the moisture in the cardboard or carton. Dehumidification equipment has been added to warehouses and operation workshops. The dehumidifier can directly and continuously control the environmental humidity for a long time, which is essential in the moisture-proof storage. It can work effectively in wet weather, wet weather and daily moisture protection, and the cost is lower than that of air conditioners. It can also be combined with the fresh air system, and the fresh air dehumidification system can combine ventilation and dehumidification into one.

5. The storage environment should be ventilated and ventilated. At the same time, the product can be protected by the outer layer of the wrapping film, which can reduce or isolate the moisture regain caused by the environment.