milk packaging film is a specialized type of packaging material designed to protect milk from moisture and other contaminants while allowing for limited oxygen exchange. This property can be beneficial for certain types of milk, such as those undergoing pasteurization or ultra-pasteurization, which may require some exposure to oxygen to maintain their desired texture and flavor. However, it is important to carefully balance the level of oxygen permeability with the need to prevent spoilage. Non-oxygen barrier PE films are often used in combination with other packaging materials, such as aluminum foil or ethylene vinyl alcohol (EVOH), to create a more robust barrier against oxygen and other gases.