Fully biodegradable polyester-based film

The present invention relates to a plastic film, in particular to a polyester-based film totally biodegradable. The film is made by the following mass percentage of material: a flexible biodegradable polyester 40-80%, 10-55%, rigid biodegradable polyester, 0.5-1.5% reactive compatibilizer, humectants 1-2%, 1-2% humectants, anti-aging agent, 0.5-1.5%, 0.5-1%, 0.5-3% slip and antiblock agent. Biologically degradable films of the present invention, does not contain any conventional non-biodegradable plastic, is also free of starch, may be blown LDPE film on the ordinary film blowing machine, without any transformation of the apparatus, the film has good transparency, good flexibility high strength, low water vapor transmission, is conducive to moisture and good insulation.