What Materials Are Disposable Plastic Packaging Boxes Made Of?

The main component of plastic packaging boxes is synthetic resin. The term resin was originally named after the lipids secreted by animals and plants, such as rosin, shellac, etc. Currently, resin refers to polymers that have not been mixed with various additives. Resin accounts for approximately 40% to 100% of the total weight of plastic. The basic properties of plastic packaging boxes are mainly determined by the nature of the resin, but additives also play an important role. Some plastic packaging boxes are basically composed of synthetic resins with no or less additives, such as plexiglass, polystyrene, etc.
There are basically two types of polymer structures in plastic packaging boxes:
The first is a linear structure, and polymer compounds with this structure are called linear polymer compounds.
The second type is body structure. Polymer compounds with this structure are called body type polymer compounds. Some polymers have branched chains, called branched polymers, and have a linear structure. Although some polymers have cross-links between molecules, there are few cross-links, which is called a network structure and is a body structure.
Plastic packaging boxes can be divided into two categories: thermoset and thermoplastic. The former cannot be reshaped and used, while the latter can be produced repeatedly. The so-called plastic packaging box is actually a kind of synthetic resin. Its shape is similar to the pine resin in natural resin. However, it is called a plastic packaging box because it is artificially synthesized through chemical means.