Plastic packaging is plastic as the material to make the packing box. The plastic is made of synthetic or natural polymer resin as main material. Add a variety of additives, with ductility at a certain temperature and pressure, cooling after a class of materials can be fixed in its shape.

A natural or synthetic polymer molecules in the molten state, and evenly distributed around the additive molecules called plasticizing, this process is called has already reached plasticizing, has not yet reached, is considered not plastic. Plastic packaging is one of the four materials: paper and paperboard packaging industry accounted for 30%, accounting for 25% of plastic, metal and glass accounted for 25%, accounted for 15%.