The invention relates to the field of bulk bag packaging, and in particular, to a three-layer co-extruded packaging film and its preparation method. In one aspect, the invention provides a three-layer co-extruded packaging film composed of an inner layer, a middle layer and an outer layer arranged sequentially from the inside to the outside. The three-layer co-extruded packaging film features high stiffness, smooth surface, easy opening and high temperature resistance to materials. Its heat resistance temperature can reach 115℃, meeting the special high-temperature packaging demands of downstream enterprises. Compared with traditional inner liners for bulk bags, it is applicable to the filling of high-temperature materials. During the use of high-temperature materials, it avoids inner bag adhesion and material discharging blockage.
Country Code: CN
Application Number: CN202010272091.X
