The material of the plastic packaging bag?

u003cpu003eu003cpu003eMaterials of plastic packaging bagsu003cbr /u003eu003c/pu003eu003cpu003ePlastic packaging bags are mainly made of synthetic water-soluble packaging bags or natural polymer resins. After adding various additives, it has ductility under certain temperature and pressure, and can fix its shape after cooling. The process of natural or water-soluble packaging bag synthetic polymer resin molecules in the molten state and evenly distributed auxiliary agent molecules around is called plasticization. This process is called plasticization but not yet plasticization. u003cbr /u003eu003c/pu003e Although 　　　　 plastic packaging bags are now the second packaging material, water-soluble packaging bags are not as practical as paper and cardboard packaging. However, the plastic vacuum packaging industry is growing at a rate of 5% every year. Water-soluble packaging bags and other plastic materials, including paper and cardboard, metal, glass, ceramics, hemp and cotton, etc., are only growing at a rate of 2%. For this one day The plastic packaging industry will surpass paper and cardboard to become the first packaging material. u003c/pu003eu003cbr /u003eu003cpu003eu003cbr /u003eu003c/pu003eu003cpu003eu003cbr /u003eu003c/pu003eu003c/pu003e