Packaging cartons can be seen everywhere in our daily lives and have a wide range of applications. Packaging cartons occupy most of the market among many packaging boxes. Today, I will introduce the classification and structure of packaging cartons.

The forming process of a paper box is generally to cut the cardboard, crease and crimp, then bend into shape, or bind, bond, and paste into shape. According to different materials, cartons can be divided into corrugated cartons, whiteboard cartons, and cardboard cartons. According to different shapes, it can be divided into square cartons, round cartons, polygon cartons, special-shaped cartons and so on. According to the proportional relationship between the opening surface of the package and the other surfaces, the smaller opening surface is called "tube-type" packaging; the larger opening surface is called "pan-type" packaging.

The common structure of the paper box is also the flap paper box, which refers to the paper box in which the back of the box cover and the box body are combined. The buckle cover carton refers to a carton made of two pieces of cardboard with the cover and the box body. A portable carton refers to a carton with a handle on the upper part of the box body. A drawer carton refers to a fixed structure carton similar to a drawer.

In industrial production, according to whether the carton can be folded after forming, it is divided into the fixed cartons and folding cartons. The former is made by bonding and pasting the substrate cardboard with a veneer material, so it is also called a "sticky carton". Once it is formed, the box body is fixed on all sides and cannot be folded. Folding cartons can be folded to save storage and transportation space when the contents are not packed. It is the most widely used paper packaging container.

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