The production method of embossed co-extruded packaging film.

To achieve the above technical effects, the technical solution of the present utility model is a high-toughness embossed co-extruded packaging film, which is a multi-layer co-extruded film, characterized in that from the surface layer to the inner layer, it sequentially includes a nylon surface layer, a bonding resin layer, at least two intermediate polyethylene layers, and a heat sealing layer. At least one intermediate polyethylene layer located on the inner side of the bonding resin layer is a medium-density polyethylene layer.

The preferred technical solution is to laminate and adhere the medium-density polyethylene layer with the adhesive resin layer. The preferred technical solution is that at least two intermediate polyethylene layers located on the inner side of the adhesive resin layer are medium-density polyethylene layers, and the medium-density polyethylene layers of at least two layers are laminated and bonded together.

The preferred technical solution is that the multi-layer co-extruded film is a nine-layer co-extruded film, which sequentially includes a nylon surface layer, an adhesive resin layer, a three-layer stacked medium-density polyethylene layer, a three-layer stacked low-density polyethylene layer, and a heat sealing layer from the surface layer to the inner layer. The preferred technical solution is that the sum of the thicknesses of the medium-density polyethylene layer accounts for 40-65% of the thickness of the high-toughness embossed co-extruded packaging film.