Varieties of plastic packaging bags
Varieties and advantages and disadvantages: 1. Polyethylene (PE) Polyethylene is a high-molecular polymer of ethylene and a thermoplastic. According to its industrial production methods, there are high-pressure, medium-pressure, and low-pressure polymerization methods. Different production methods have very different molecular structures, and product properties also vary with molecular structure. Polyethylene is a milky white waxy solid,…