The structure design of corrugated paper packaging box is based on the actual conditions of packaging and production, and according to the scientific principle, it designs the external structure and internal accessories of packaging. The structure must be designed with sufficient strength, hardness and resistance to other environments. From the point of view of packaging purpose, we must consider the following two aspects: one is to protect the primary function of products, the other is to meet the important characteristics of modern packaging, such as transportation, processing characteristics and so on.
Qualified carton products, starting from the correct structure design. Designers should not only truly understand the intentions of customers, but also be familiar with post-processing technology. Only in this way can the customer's intentions be transformed into qualified products, and can ensure the smooth processing of post-processing. Before the beginning of the design, the designer should know the nature, shape, size and weight of the contents, the arrangement, transportation mode and stacking mode of the contents, the storage environment, transportation route and time of the contents, as well as the information of carton type and manufacturing materials.
The design of corrugated cartons in China has some problems in technology and guiding ideology, lacking of systematic analysis, which makes the designed packaging unable to meet the requirements of ergonomics and technical and economic rationality. This is evident in the design of carton size.
In our country, only the type of carton has been clearly stipulated, but the size of carton has no specific requirements. It is mainly decided by the designer. In determining the size of carton, the designer mainly considers two factors: one is that it can contain the contents; the other is that it has enough strength. In fact, besides the contents of packaging, there are many other factors that restrict the size and shape of cartons, such as ergonomic factors, the size of pallets, the size of truck compartments, the size of container space, the size of racks and so on. These factors are not only independent, but also mutually restrictive; packaging function should be taken into account, as well as convenience. Therefore, only by systematically and comprehensively grasping all the constraints in the design can the size of cartons be determined reasonably.
In conclusion, the size design of corrugated cartons is an important work in the structural design of corrugated cartons. A qualified carton product should have protection and good shape. Especially the carton which integrates the functions of sales packaging and transportation packaging, reasonable size will be the key to carton design. Because the change of size will directly affect the change of various properties of cartons. In a word, in the structural design of corrugated cartons, it is necessary to determine the types and properties of corrugated cartons according to the manufacturing equipment used, different production processes, corrugated papers made of different corrugated shapes and the goods in them. Only after mastering the structure and size of corrugated cartons, can corrugated cartons be manufactured to protect and beautify commodities.