Good products are packaged in color box packaging, which is better in terms of aesthetics and practicality, but in fact, we often encounter some packaging boxes in our lives. It is relatively soft and collapsed, which not only starts the role of the packaging of the box itself, but also does not mention the issue of aesthetics, so how to ensure the hardness of the packaging box is very important.

      The carton cardboard needs to do a good job of moisture-proof. Generally, corrugated paper used in packaging is relatively absorbent. If the box is in a relatively humid environment for a long time, the moisture content in the paper will increase, which will lead to a significant decrease in the strength of the paper. Generally, when the relative humidity is at 85%, the ring compressive strength will decrease by about 60%. If the box needs to be in a relatively humid environment for a long time, it is recommended to use paper with better moisture-proof effect when packing the color box.

      In order to improve the waterproof performance of the base paper surface, many paper manufacturers will add certain additives in the papermaking process to improve the waterproof performance of the paper. However, because the price of this type of additives is also relatively high, the price It is also relatively high.