Disposable underpants packaging bag and preparation process thereof

The invention relates to the technical field of disposable underpants packaging, in particular to a disposable underpants packaging bag and a preparation process thereof.The packaging bag sequentially comprises an outer layer and an inner layer, and the outer layer is prepared from, by weight, 20-30 parts of PE, 20-40 parts of solid filler, 10-15 parts of PET and 1-2 parts of polyethylene grafted methyl methacrylate; the inner layer is prepared from the following raw materials in parts by weight: 30-50 parts of PE, 5-12 parts of a polyethylene acrylic acid copolymer, 6-10 parts of polyamide, 4-8 parts of an acrylonitrile-butadiene-styrene copolymer and 3-4 parts of a compatilizer. By adopting the formula, the strength and the supporting performance of the inner layer are improved, and the outer layer is well supported, so that the packaging bag can keep the packaging form when being extruded by external force in the using process, and the phenomena of wrinkles, indentations or collapse and the like of the pac