... dual-lip cooling ring, IBC, bubble 3-Layer Co-Extrusion Film Blowing Machine is used ... new technique and technology such as three-layer-coextrusion stacking-type blown die, dual-lip ... cooling ring, IBC, bubble stabilizing device, multi-layer rotation take-off, corona treatment station, central ... safety protection and startup protection Film struction: 3 layers co-extruding A/B/CSuitable material: LDPE ...