Urea packing bag inner film and processing method thereof

The invention discloses a urea packing bag inner film and a processing method thereof and relates to the technical field of plastic films. The urea packing bag inner film is prepared from, by weight, 30-40 parts of low density polyethylene, 10-15 parts of polypropylene, 8-12 parts of disproportionated rosin, 6-10 parts of terpene resin, 6-10 parts of hydroxypropyl methyl cellulose, 5-8 parts of filling mineral powder, 5-8 parts of microcrystalline wax, 4-6 parts of guar gum, 3-5 parts of glyceryl monoleate, 3-5 parts of trioctyl citrate, 2-3 parts of natural rubber, 1-2 parts of sorbitan monopalmitate, 1-2 parts of chlorinated paraffin and 0.5-1 part of sodium hexametaphosphate. The inner film has excellent sealing performance, permeability resistance, aging resistance and stability, the situation that urea absorbs water in the air and cakes can be effectively prevented, the situation that urea permeates into the inner film and consequently the service life of the inner film is shortened can be prevented, and