Full-biodegradable vest bag producing process

The invention discloses a full- biodegradable vest bag producing process. The process includes the following steps of firstly, adding PBAT, PLA, thermoplastic resin, a chain extender, radix paeoniae alba, the root bark of the peony tree and filler into a high-speed mixer to be stirred and mixed to obtain a mixture; secondly, adding the mixture into a screw extruder to be extruded and mixed, and conducting cooling and granulating after extruding; thirdly, conducting blow molding on obtained granules through a blowing machine to form a composite thin film; fourthly, winding and collecting the composite thin film formed in the third step; fifthly, cutting the composite thin film collected in the fourth step through a roll-up bag machine to prepare roll-up vest bags. The toughness and antibacterial effects are enhanced, the bags can be degraded only after several months, and white pollution is effectively prevented.