HDPE is high-density polyethylene, referred to as "HDPE". HDPE is a highly crystalline, non-polar thermoplastic resin.
Main features: high-density polyethylene is non-toxic, tasteless, odorless white particles, melting point is about copy130℃. It has good heat and cold resistance, good chemical stability, but also has high rigidity and toughness, good mechanical strength. Dielectric properties, environmental stress resistance to crack is also good.
PET Chinese meaning: polyterephthalic acid plastic.
PET mainly has the following characteristics :1, high transparency, water absorption is higher than HDPE; 2, high tensile strength, about 9 times that of HDPE film; 3, not easy to burn, the ignition point is about 50℃ higher than HDPE; 4, poor electrical resistance, can not be used for high pressure, this is not as good as HDPE plastic; 5, has a certain resistance to some oxidants and solvents, is and outdoor long-term use, unlike HDPE is easy to decompose.