The necessity of magnets. I believe many people will find that most of them have magnets when they see the customized design drawings of double open boxes or some high-end packaging boxes. Of course, the heaven and earth cover and the surrounding heaven and earth cover are exceptional box types. Why are magnets widely used in these high-end packaging cartons? In fact, it is very simple, A common feature of double opening packaging gift boxes is that if the box itself is stuck by the paper mounting friction of the inner and outer boxes or the upper and lower boxes to ensure that the box is closed, it is very, very difficult, because the double opening characteristics will make the contact area of the box different from that of ordinary paper boxes. Even if the outer box is picked up vertically, the inner box will not fall out, In order to ensure that the fluency of the double open box is not blocked when it is opened, it will be relatively wide, which will bring a difficulty that is difficult to overcome by the box itself, and the double open box cannot be closed tightly

In this case, the simplest way to prevent the double open box from being opened easily is to install a magnet on the cover box. In fact, there are many ways to prevent the sliding cover or too loose between the inner and outer upper and lower boxes, but other methods generally use more sophisticated and precise technology. For example, adjust the beer board to make several beer boards very accurate, The above situation will not occur, but it is very difficult. It not only requires the beer board master to be very professional. In order to adjust to a perfect data state, it also needs to waste a lot of materials. If you think about it, the general size of a beer board should be charged 200 ~ 300, and the larger one should be more than 300. This high-end double box beer board is generally not small