Packaging bags are popular in all walks of life today, convenient and efficient, and easy to transport. There are four types of packaging materials: plastic materials, paper materials, metal materials, and glass materials. Among them, plastic packaging bags account for a relatively large proportion, and plastic vacuum packaging bags can also make the products fresh and easy to transport and not easy to squeeze. So what are the compo整体的塑料包装吗?
Plastic packaging bags are made of polymer resins or natural polymers. After adding various additives, it is a type of material that has ductility under a certain temperature and pressure and can be fixed in shape after cooling.
The process of natural or constituent polymer resin molecules in the molten state and near the uniform distribution of the auxiliary molecule is called plasticization. The process that arrived early in the year is called early plasticization, and has not arrived yet. It is thought that there is no plasticization.
Of course, plastic packaging bags are now the second packaging material, and their application is not as good as paper and cardboard packaging. However, the plastic vacuum packaging industry is opening at a rate of 5% every year, while other plastic materials, including paper and cardboard, metal, glass, pottery, and hemp are only added at a rate of 2%.