Environmentally-friendly shopping paper bag water-proof outer film

The invention discloses an environmentally-friendly shopping paper bag water-proof outer film, and relates to the technical field of plastic films. The environmentally-friendly shopping paper bag water-proof outer film is prepared from the following raw materials in parts by weight: 35-40 parts of low-density polyethylene, 10-15 parts of polypropylene, 6-10 parts of hydrogenated rosin, 6-10 parts of chitosan, 5-8 parts of filling mineral powder, 5-8 parts of hydrogenated castor oil, 4-6 parts of soybean protein gel, 4-6 parts of rice bran wax, 3-5 parts of sodium carboxymethyl starch, 2-3 parts of glyceryl stearate, 2-3 parts of polyether, 1-2 parts of butadiene rubber, 1-2 parts of microcrystalline wax, 0.5-1 part of urea and 0.5-1 part of antimonous oxide. The environmentally-friendly shopping paper bag water-proof outer film can be attached to the outside of a shopping bag to make an environmentally-friendly shopping bag, so that the water resistance, aging resistance and mechanical performance of the shop