... -type blown die, dual-lip cooling ring, IBC, Three-Layer Coextrusion Heavy Duty Blown Film Line is used for producing ... adopts a lot of new technique and technology such as three-layer-coextrusion stacking-type blown die, dual-lip cooling ring ... multi-layer rotation take-off, corona treatment station, central-guide friction and central winder, flexographic printing, anti-slip embossing, adjustable edge ...