PP Blown Film Extrusion

PP granules feed into the extruder screw, melt under heat and pressure, and emerge from an annular die as a tube of molten film — this is the blown film extrusion process, and it is the primary production method for thin PP film used in stationery bags, produce bags, garment covers, and general packaging applications. The molten tube is inflated with air to control lay flat width, then collapsed through nip rolls and wound into roll form for downstream converting by bag making or folder making machines. Ming Jilee's MGPP-Serial PP Blown Film Extrusion Line covers models from MGPP-45 to MGPP-75, with lay flat widths ranging from 100 mm to 950 mm and outputs of 10–100 kg/hr depending on screw diameter. Film thickness range is 0.02–0.08 mm, suitable for CPP and transparent PP film production. The line is designed for stationery manufacturers and bag converters who produce film in-house, giving them direct control over film properties — transparency, tensile strength, and heat seal performance — while reducing raw material cost compared to purchasing pre-made film roll. CE certified, ISO-9002.