... machine making 3 layers or more layers co-extrusion packaging film rotary die device double-winder Three-layer Common- ... in fold width 0.08mm in the thickness packaging films, film has good insulation, for instance holding temperature, antihumid, antibreeze, anti ... , insulation oxygen,oil resistive, and so used for light and heavy-duty packaging, for example fresh fruits, meat-feeding,salt vegetables, ...