The polyester elastic backing plate is non-toxic and tasteless, the density is in the range of 0.940~0.976 g/cm3; the operating temperature can reach 100 °C; the melting temperature is 120~160 °C. It has good heat and cold resistance, good chemical stability, high rigidity and toughness, and high mechanical strength. Dielectric properties, wear resistance, environmental stress crack resistance are also good