PE plastic bags are non-polar thermoplastic resins with high crystallinity. The appearance of the original HDPE is milky white, with a certain degree of translucency on the sheet. PE plastic bags have excellent resistance to most household and industrial chemicals.
Certain types of chemicals can cause chemical corrosion, such as corrosive oxidants, aromatic hydrocarbons and halogenated hydrocarbons. The polymer does not absorb moisture, has good water vapor resistance, and can be used for packaging purposes. PE plastic bags have very good electrical properties, especially high dielectric strength, making them very suitable for wires and cables.
The medium and high molecular weight grades have excellent impact resistance even at room temperature or at a low temperature of -40F. The unique feature of various grades of PE plastic bags is an appropriate combination of four basic variables: density, molecular weight, molecular weight distribution and additives. Different catalysts are used to produce customized polymers with special properties. The combination of these variables produces different grades of PE plastic bags, which achieve the best balance in performance.