... type blown die, dual-lip cooling ring, IBC, Three-Layer Coextrusion Heavy Duty Blown Film Line is used for producing ... petrochemical and chemical industries. The products are erect, beautiful, high-strength, convenient for stacking, and preventing from slide-down. ... , central-guide friction and central winder, flexographic printing, anti-slip embossing, adjustable edge-folding and forming. The line ...