The most common gift box is the world box opened up and down, the box type is simple, the production cycle is short, and the cost is low. Among the many box types of gift boxes, it can be said that it is the simplest, but there is also a difficulty in making the world packaging box, that is, the problem of tightness. That is, the degree of difficulty when the box is opened.

The looser it is, the easier it is to open, and the tighter it is, the harder it is to open. Everyone knows that how to control the degree is more difficult. The following editor will tell you how to control the tightness of the world box.

The principle is very simple, that is, the tightness is determined by controlling the size of the top box and the ground box. If the ground box is a fixed size, just make the top box bigger when the package box is made, and it will be looser when it is smaller.

The principle is very simple, but the specific elasticity is difficult to control. First of all, it needs to be determined according to the material, size and weight of the box. In addition, the customer's needs are also an important factor. Generally, it is most suitable to ensure that the box can slowly and naturally fall when the box is held. Packing box manufacturers usually leave a gap of about 2-3mm, so as to ensure a natural fall.